/**
 * MORELESS Age Calculator
 * Main Stylesheet - Production Ready
 */

/* Font Override */
*:not(i):not(.fa):not(.fas):not(.far):not(.fab):not(.fal):not(.fad):not(.fat) {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Design System Variables */
:root {
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-bg-hover: rgba(255, 77, 41, 0.15);
    --glass-bg-secondary: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-border-light: rgba(255, 255, 255, 0.05);
    --glass-blur: blur(20px) saturate(120%);
    --glass-blur-light: blur(8px) saturate(110%);

    --color-dark: #031024;
    --color-dark-accent: #051e3e;
    --color-dark-light: #0a1932;
    --color-primary: #FF4D29;
    --color-primary-light: rgba(255, 77, 41, 0.1);
    --color-primary-dark: #e64024;
    --color-secondary: #0055A4;
    --color-secondary-light: rgba(0, 85, 164, 0.1);
    --color-white: #FFFFFF;
    --color-light-gray: rgba(255, 255, 255, 0.7);
    --color-gray: rgba(255, 255, 255, 0.5);
    --color-dark-gray: rgba(255, 255, 255, 0.1);
    --color-success: #27AE60;
    --color-success-light: rgba(39, 174, 96, 0.15);
    --color-warning: #F39C12;
    --color-warning-light: rgba(243, 156, 18, 0.15);
    --color-error: #E74C3C;
    --color-error-light: rgba(231, 76, 60, 0.15);
    --color-info: #3498DB;
    --color-info-light: rgba(52, 152, 219, 0.15);
    --color-purple: #9B59B6;
    --color-purple-light: rgba(155, 89, 182, 0.15);

    --text-primary: rgba(255, 255, 255, 0.92);
    --text-secondary: rgba(255, 255, 255, 0.75);

    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 1.875rem;
    --font-size-3xl: 2.25rem;
    --font-size-4xl: 3rem;

    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 0.75rem;
    --space-lg: 1rem;
    --space-xl: 1.5rem;
    --space-2xl: 2rem;
    --space-3xl: 3rem;

    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.4);

    --z-normal: 0;
    --z-above: 1;
    --z-sticky: 10;
    --z-fixed: 100;
    --z-modal: 2000;
    --z-confetti: 5000;
}

/* Loading Spinner */
.loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(3, 16, 36, 0.95);
    z-index: var(--z-modal);
    display: none;
    align-items: center;
    justify-content: center;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--color-dark-gray);
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Global Resets */
html {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: radial-gradient(ellipse at top left, #05204b 25%, #031127 60%);
    background-attachment: fixed;
    overflow-x: hidden;
    min-height: 100vh;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    box-sizing: border-box;
}

body.page-ready .main-content {
    opacity: 1;
    transition: opacity 0.2s ease-out;
}

@media (max-width: 900px) {
    body {
        background: linear-gradient(180deg, #05204b 0%, #031127 100%);
    }
}

body::before {
    content: '';
    position: fixed;
    top: -200px;
    right: -200px;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255, 77, 41, 0.15), transparent 60%);
    filter: blur(100px);
    z-index: 1;
    pointer-events: none;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.main-content *,
.main-content *::before,
.main-content *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--color-dark-gray);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition: background var(--transition-normal);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-dark);
}

::selection {
    background: var(--color-primary);
    color: var(--color-white);
}

/* Layout */
.page-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    width: 100%;
    box-sizing: border-box;
}

.main-column {
    min-width: 0;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}

.tool-container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    box-sizing: border-box;
    position: relative;
}

.tool-container .content-wrapper {
    padding: var(--space-xl) var(--space-lg) var(--space-lg);
}

.wide-container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.wide-container .content-wrapper {
    padding: var(--space-xl) var(--space-lg) var(--space-lg);
}

/* Main Content */
.main-content {
    opacity: 0;
    margin-top: 80px;
    min-height: calc(100vh - 80px);
    padding: var(--space-md) 0;
    position: relative;
    background: radial-gradient(circle at 15% 10%, rgb(255 77 41 / 11%) -2%, transparent 30%),
                radial-gradient(circle at 70% 85%, rgba(0, 85, 164, 0.12) 0%, transparent 55%);
    width: 100%;
    box-sizing: border-box;
    contain: layout;
    transform: translateZ(0);
}

/* Hero Section */
.hero {
    text-align: center;
    margin-bottom: var(--space-md);
    padding: var(--space-xs) 0;
    contain: layout style;
    transform: translateZ(0);
}

.hero-title {
    font-size: var(--font-size-xl);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 0;
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: var(--font-size-base);
    color: var(--color-light-gray);
    max-width: 400px;
    margin: 0 auto;
    line-height: 1.3;
}

/* Compact Converter Section */
.compact-converter {
    margin-bottom: var(--space-xl);
}

/* Content Wrapper */
.content-wrapper {
    background: rgba(255, 255, 255, 0.09);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    padding: var(--space-2xl);
    position: relative;
    z-index: 10;
    overflow: hidden;
    contain: layout;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.content-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-primary), var(--color-secondary), transparent);
    z-index: 2;
}


.content-wrapper.analytics-wrapper,
.content-wrapper.features-wrapper,
.content-wrapper.faq-wrapper {
    margin-top: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

.compact-converter .content-wrapper {
    padding: var(--space-xl) var(--space-lg) var(--space-lg);
}

.analytics-wrapper {
    margin-top: var(--space-3xl);
    padding: var(--space-xl);
}

/* Main Tool Container */
.main-tool-container {
    width: 100%;
}

/* Input Section */
.input-section {
    margin-bottom: var(--space-2xl);
    position: relative;
}

.input-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.input-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
    color: var(--color-white);
    font-size: var(--font-size-sm);
}

.input-label i {
    color: var(--color-primary);
    font-size: var(--font-size-md);
}

.date-input,
.time-input {
    padding: var(--space-md);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    background: rgba(8, 22, 50, 0.55);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-family: var(--font-primary);
    outline: none;
    transition: border-color var(--transition-normal);
}

.format-select,
.timezone-select {
    padding: var(--space-md);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    background: rgba(8, 22, 50, 0.45);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-family: var(--font-primary);
    outline: none;
    transition: border-color var(--transition-normal);
}

.date-input:focus,
.time-input:focus,
.format-select:focus,
.timezone-select:focus {
    border-color: var(--color-primary);
}

.date-input::-webkit-calendar-picker-indicator,
.time-input::-webkit-calendar-picker-indicator {
    filter: invert(1);
    cursor: pointer;
    opacity: 0.7;
    transition: opacity var(--transition-normal);
}

.date-input::-webkit-calendar-picker-indicator:hover,
.time-input::-webkit-calendar-picker-indicator:hover {
    opacity: 1;
}

/* Results Wrapper */
.results-wrapper {
    display: none;
    animation: fadeIn 0.5s ease-out;
}

.results-wrapper.visible {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Results Tabs */
.results-tabs {
    display: flex;
    gap: var(--space-md);
    margin: var(--space-xl) 0 var(--space-lg) 0;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: var(--space-xs);
}

.results-tab {
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    padding: var(--space-md) var(--space-lg);
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    transition: color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    margin-bottom: -1px;
}

.results-tab i {
    font-size: var(--font-size-lg);
}

.results-tab:hover {
    color: var(--text-primary);
    border-color: var(--color-primary);
}

.results-tab.active {
    color: var(--color-primary);
    border-color: var(--color-primary);
}

/* Tab Panels */
.results-tab-panel {
    display: none;
    animation: fadeInTab 0.3s ease-out;
}

.results-tab-panel.active {
    display: block;
}

@keyframes fadeInTab {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Section Divider */
.section-divider {
    margin: var(--space-3xl) 0 var(--space-xl) 0;
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--glass-border);
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-white);
    margin: 0;
}

.section-title i {
    color: var(--color-primary);
}

/* Result Card */
.result-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    padding: var(--space-lg) var(--space-xl);
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    margin-bottom: var(--space-lg);
}

.result-card.main-result {
    border: 2px solid var(--color-primary);
}

.result-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    color: var(--color-white);
    flex-shrink: 0;
}

.result-content {
    flex: 1;
}

.result-value {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.2;
    margin-bottom: var(--space-xs);
}

.result-subtitle {
    font-size: var(--font-size-base);
    color: var(--color-light-gray);
    font-weight: 500;
}

.result-target-date {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin-top: var(--space-sm);
    padding: var(--space-xs) var(--space-md);
    background: rgba(255, 77, 41, 0.1);
    border: 1px solid rgba(255, 77, 41, 0.3);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    font-weight: 600;
}

.result-target-date i {
    font-size: var(--font-size-xs);
}

.result-actions {
    display: flex;
    gap: var(--space-xs);
    flex-shrink: 0;
}

.result-action-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    cursor: pointer;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                background 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: var(--font-size-md);
}

.result-action-btn:hover {
    background: rgba(255, 77, 41, 0.15);
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.result-action-btn#shareBtn {
    background: rgba(39, 174, 96, 0.12);
    border-color: rgba(39, 174, 96, 0.3);
    color: #27ae60;
}

.result-action-btn#shareBtn:hover {
    background: rgba(39, 174, 96, 0.15);
    border-color: rgba(39, 174, 96, 0.5);
    color: #27ae60;
}

.result-action-btn.trash-btn {
    background: rgba(231, 76, 60, 0.12);
    border-color: rgba(231, 76, 60, 0.18);
    color: rgba(231, 76, 60, 0.9);
}

.result-action-btn.trash-btn:hover {
    background: rgba(231, 76, 60, 0.15);
    border-color: rgba(231, 76, 60, 0.5);
    color: rgba(231, 76, 60, 1);
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.info-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.info-card:hover {
    background: var(--glass-bg-hover);
    border-color: var(--color-primary);
    transform: translateY(-4px);
}

.info-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    color: var(--color-white);
}

.info-content {
    flex: 1;
}

.info-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-light-gray);
    margin: 0 0 var(--space-xs) 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-value {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--space-xs);
}

.info-subtitle {
    font-size: var(--font-size-xs);
    color: var(--color-gray);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.stat-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-sm);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-card:hover {
    background: var(--glass-bg-hover);
    border-color: var(--color-primary);
    transform: translateY(-4px) scale(1.02);
}

.stat-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-md);
    color: var(--color-white);
}

.stat-value {
    font-size: var(--font-size-xl);
    font-weight: 900;
    color: var(--color-white);
    line-height: 1.2;
}

.stat-label {
    font-size: var(--font-size-xs);
    color: var(--color-light-gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

/* Fun Stats Grid */
.fun-stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.fun-stat-card {
    background: linear-gradient(135deg, rgba(155, 89, 182, 0.1), rgba(52, 152, 219, 0.1));
    border: 1px solid rgba(155, 89, 182, 0.3);
    border-radius: var(--radius-md);
    padding: var(--space-2xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-md);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.fun-stat-card:hover {
    transform: translateY(-4px) scale(1.02);
    border-color: var(--color-purple);
}

.fun-stat-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-purple), #8e44ad);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    color: var(--color-white);
}

.fun-stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 900;
    color: var(--color-white);
    line-height: 1.2;
}

.fun-stat-label {
    font-size: var(--font-size-md);
    color: var(--color-white);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.fun-stat-info {
    font-size: var(--font-size-xs);
    color: var(--color-light-gray);
    font-style: italic;
}

/* Health Stats Grid */
.health-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.health-stat-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-xs);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateZ(0);
}

.health-stat-card:hover {
    transform: translate3d(0, -2px, 0) scale3d(1.01, 1.01, 1);
    border-color: var(--color-primary);
    background: var(--glass-bg-hover);
}

.health-stat-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    color: var(--color-white);
}

.health-stat-value {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.2;
}

.health-stat-label {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.health-stat-info {
    font-size: 0.625rem;
    color: var(--color-light-gray);
    font-style: italic;
    opacity: 0.8;
}

/* Planets Grid */
.planets-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.planet-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-xs);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.planet-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.planet-card:hover::before {
    transform: scaleX(1);
}

.planet-card:hover {
    transform: translateY(-8px) scale(1.05);
}

.planet-card[data-planet="mercury"]:hover { border-color: #8C7853; }
.planet-card[data-planet="venus"]:hover { border-color: #FFC649; }
.planet-card[data-planet="earth"]:hover { border-color: #4A90E2; }
.planet-card[data-planet="mars"]:hover { border-color: #E27B58; }
.planet-card[data-planet="jupiter"]:hover { border-color: #C88B3A; }
.planet-card[data-planet="saturn"]:hover { border-color: #FAD5A5; }
.planet-card[data-planet="uranus"]:hover { border-color: #4FD0E7; }
.planet-card[data-planet="neptune"]:hover { border-color: #4166F5; }

.planet-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-dark-accent), var(--color-dark-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    color: var(--color-white);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.planet-card:hover .planet-icon {
    transform: scale(1.1) rotate(360deg);
}

.planet-icon.mercury { background: linear-gradient(135deg, #8C7853, #A89968); }
.planet-icon.venus { background: linear-gradient(135deg, #FFC649, #FFD666); }
.planet-icon.earth { background: linear-gradient(135deg, #4A90E2, #5DA3F7); }
.planet-icon.mars { background: linear-gradient(135deg, #E27B58, #F08D6D); }
.planet-icon.jupiter { background: linear-gradient(135deg, #C88B3A, #D9A556); }
.planet-icon.saturn { background: linear-gradient(135deg, #FAD5A5, #FCDDB3); }
.planet-icon.uranus { background: linear-gradient(135deg, #4FD0E7, #6DD9EF); }
.planet-icon.neptune { background: linear-gradient(135deg, #4166F5, #5C7EF7); }

.planet-name {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-white);
    margin: 0;
}

.planet-age {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.2;
}

.planet-info {
    font-size: 0.625rem;
    color: var(--color-gray);
    font-style: italic;
    opacity: 0.8;
}

/* Milestones Grid */
.milestones-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.milestone-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.milestone-card:hover {
    background: var(--glass-bg-hover);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.milestone-card.reached {
    background: rgba(25, 111, 61, 0.15);
    border-color: #196F3D;
}

.milestone-card.in-progress {
    background: rgba(243, 156, 18, 0.15);
    border-color: rgba(243, 156, 18, 0.5);
}

.milestone-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    color: var(--color-white);
    flex-shrink: 0;
}

.milestone-card.reached .milestone-icon {
    background: linear-gradient(135deg, #196F3D, #145A32);
}

.milestone-card.in-progress .milestone-icon {
    background: linear-gradient(135deg, #F39C12, #E67E22);
}

.milestone-content {
    flex: 1;
}

.milestone-title {
    font-size: var(--font-size-md);
    font-weight: 700;
    color: var(--color-white);
    margin: 0 0 var(--space-xs) 0;
}

.milestone-date {
    font-size: var(--font-size-sm);
    color: var(--color-light-gray);
    margin-bottom: var(--space-xs);
}

.milestone-countdown {
    font-size: var(--font-size-xs);
    color: var(--color-gray);
}

.milestone-status {
    font-size: var(--font-size-xs);
    color: var(--color-success);
    font-weight: 600;
}

/* Button System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: var(--font-size-sm);
    text-decoration: none;
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
    border: 1px solid rgba(255, 77, 41, 0.3);
}

.btn-primary:hover {
    color: var(--color-white);
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
}

.btn-secondary {
    background: rgba(15, 30, 55, 0.3);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.btn-secondary:hover {
    background: rgba(15, 30, 55, 0.4);
    border-color: rgba(255, 255, 255, 0.12);
    color: var(--text-primary);
}

/* Analytics Section */
.analytics-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.analytics-header h4 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.analytics-header h4 i {
    color: var(--color-primary);
    font-size: 16px;
}

.reset-stats-btn {
    height: 32px;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0 var(--space-md);
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid var(--glass-border-light);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.reset-stats-btn i {
    color: var(--text-secondary);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.reset-stats-btn:hover {
    background: linear-gradient(135deg, var(--color-error) 0%, var(--color-error) 100%);
    border-color: var(--color-error);
    color: var(--color-white);
    transform: translateY(-1px);
}

.reset-stats-btn:hover i {
    color: var(--color-white);
}

.analytics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.analytics-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    transform: translateZ(0);
}

.analytics-card:hover {
    background: rgba(255, 77, 41, 0.15);
    border-color: var(--color-primary);
    transform: translateY(-2px) scale(1.01);
}

.analytics-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-md);
    color: var(--color-white);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.analytics-data {
    flex: 1;
}

.analytics-value {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-white);
    font-family: var(--font-primary);
    margin-bottom: 4px;
    line-height: 1.2;
}

.analytics-label {
    font-size: var(--font-size-xs);
    color: var(--color-light-gray);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    opacity: 0.8;
}

/* Features Section */
.features-section {
    margin-top: var(--space-3xl);
    margin-bottom: var(--space-2xl);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: var(--space-lg);
}

.section-header p {
    font-size: var(--font-size-md);
    color: var(--color-light-gray);
    max-width: 600px;
    margin: 0 auto;
}

.section-header-with-action {
    position: relative;
}

.docs-link-btn {
    position: absolute;
    top: 0;
    right: 0;
    height: 32px;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0 var(--space-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border: 1px solid rgba(255, 77, 41, 0.3);
    border-radius: var(--radius-md);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.docs-link-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.docs-link-btn:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
}

.docs-link-btn:hover::before {
    left: 100%;
}

.docs-link-btn i {
    color: var(--color-white);
}

.docs-link-short {
    display: none;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.feature-card {
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    text-align: center;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.feature-card:hover {
    background: rgba(255, 77, 41, 0.15);
    border-color: var(--color-primary);
    transform: translateY(-2px) scale(1.01);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    font-size: var(--font-size-xl);
    color: var(--color-white);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--space-md);
}

.feature-card p {
    color: var(--color-light-gray);
    line-height: 1.6;
}

/* FAQ Section */
.faq-section {
    margin-bottom: var(--space-3xl);
}

.faq-grid {
    display: grid;
    gap: var(--space-md);
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item:hover {
    background: rgba(255, 77, 41, 0.15);
    border-color: var(--color-primary);
    transform: translateY(-2px) scale(1.01);
}

.faq-question {
    padding: var(--space-xl);
    background: rgba(255, 255, 255, 0.12);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
}

.faq-question:hover {
    background: rgba(255, 77, 41, 0.1);
}

.faq-question h3 {
    font-size: var(--font-size-md);
    color: var(--color-white);
    font-weight: 600;
    margin: 0;
}

.faq-question i {
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    transition: transform var(--transition-normal);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer-content {
    padding: 0 var(--space-xl) var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.faq-answer p {
    color: var(--color-light-gray);
    line-height: 1.6;
    margin: 0;
    width: 100%;
}

/* How to Use Section */
.usage-compact {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xl);
}

.usage-steps-horizontal {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    flex-wrap: nowrap;
    margin-bottom: var(--space-2xl);
}

.usage-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 200px;
}

.step-icon {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary), #ff6b47);
    border-radius: 50%;
    margin-bottom: var(--space-md);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.step-icon:hover {
    transform: scale(1.05);
}

.step-icon i {
    font-size: 1.5rem;
    color: white;
}

.step-num {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 24px;
    height: 24px;
    background: var(--color-dark);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 800;
    border: 2px solid var(--color-primary);
}

.usage-step h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.usage-step p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

.step-arrow {
    color: var(--color-primary);
    font-size: 1.5rem;
    opacity: 0.7;
}

.quick-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.quick-feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-lg);
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 72px;
    text-align: center;
}

.quick-feature:hover {
    background: rgba(255, 77, 41, 0.15);
    border-color: var(--color-primary);
    transform: translateY(-2px) scale(1.01);
}

.quick-feature i {
    font-size: 1.25rem;
    color: var(--color-primary);
    flex-shrink: 0;
}

.quick-feature span {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

/* Favorite Tab */
.tool-tabs {
    position: absolute;
    top: -44px;
    right: 64px;
    display: flex;
    gap: var(--space-sm);
    z-index: 5;
}

.tool-tab {
    position: relative;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-bottom: none;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                background 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateZ(0);
}

.tool-tab i {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.6);
    transition: color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.tool-tab:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 77, 41, 0.3);
}

.tool-tab:hover i {
    color: var(--color-primary);
}

.tool-tab.active i {
    color: #E74C3C;
}

/* Mobile Action Tabs - Hidden on desktop, visible on mobile when results shown */
.mobile-action-tab {
    display: none;
}

/* Share button - green */
#mobileShareBtn {
    background: rgba(39, 174, 96, 0.12);
    border-color: rgba(39, 174, 96, 0.3);
}

#mobileShareBtn i {
    color: #27ae60;
}

/* Mobile divider */
.mobile-divider {
    display: none;
}

/* Clear button - red */
#mobileClearBtn {
    background: rgba(231, 76, 60, 0.12);
    border-color: rgba(231, 76, 60, 0.18);
}

#mobileClearBtn i {
    color: rgba(231, 76, 60, 0.9);
}

/* Confetti Modal */
.confetti-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 30% 40%, rgba(255, 77, 41, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(0, 85, 164, 0.10) 0%, transparent 50%),
        linear-gradient(135deg, rgba(3, 16, 36, 0.97) 0%, rgba(5, 30, 62, 0.98) 50%, rgba(3, 16, 36, 0.99) 100%);
    z-index: var(--z-confetti);
    align-items: center;
    justify-content: center;
    animation: modalFadeIn 0.3s ease-out;
}

.confetti-modal.show {
    display: flex;
}

@keyframes modalFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.confetti-content {
    position: relative;
    background: linear-gradient(135deg, rgba(255, 77, 41, 0.2), rgba(155, 89, 182, 0.2));
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    padding: var(--space-3xl);
    max-width: 600px;
    width: 90%;
    text-align: center;
    animation: confettiContentBounce 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes confettiContentBounce {
    0% {
        opacity: 0;
        transform: scale(0.3) translateY(-100px);
    }
    50% { transform: scale(1.05); }
    70% { transform: scale(0.95); }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.confetti-close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: var(--color-white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-md);
    transition: all 0.3s ease;
    z-index: 10;
}

.confetti-close:hover {
    background: var(--color-error);
    border-color: var(--color-error);
    transform: rotate(90deg);
}

.confetti-header {
    margin-bottom: var(--space-2xl);
}

.birthday-icon {
    font-size: 5rem;
    margin-bottom: var(--space-lg);
    animation: birthdayIconBounce 1s ease-in-out infinite;
}

@keyframes birthdayIconBounce {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-20px) scale(1.1); }
}

.confetti-title {
    font-size: var(--font-size-4xl);
    font-weight: 900;
    color: var(--color-white);
    margin-bottom: var(--space-md);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    animation: titlePulse 2s ease-in-out infinite;
}

@keyframes titlePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.confetti-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-light-gray);
    font-weight: 500;
}

.confetti-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    overflow: hidden;
    z-index: calc(var(--z-confetti) + 1);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.confetti-animation.active {
    opacity: 1;
    visibility: visible;
}

.confetti-piece {
    position: absolute;
    width: 10px;
    height: 10px;
    top: -20px;
    background: var(--color-primary);
    opacity: 1;
    animation: confettiFall 4s ease-out forwards;
    pointer-events: none;
}

@keyframes confettiFall {
    0% {
        opacity: 1;
        transform: translateY(0) rotate(0deg) scale(1);
    }
    50% { opacity: 1; }
    100% {
        opacity: 0;
        transform: translateY(calc(100vh + 50px)) rotate(720deg) scale(0.5);
    }
}

/* Sticky Age Calculator */
.sticky-age-calculator {
    position: fixed;
    bottom: 100px;
    right: var(--space-xl);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                visibility 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.sticky-age-calculator.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.sticky-age-content {
    background: rgba(255, 255, 255, 0.12);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.sticky-age-value {
    font-family: var(--font-primary);
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: 1px;
    white-space: nowrap;
}

.sticky-age-value .unit {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: var(--font-size-lg);
    margin-left: 2px;
}

/* Responsive Design */
@media (max-width: 900px) {
    .input-grid {
        gap: var(--space-md);
    }

    .info-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .planets-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .analytics-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .tool-container {
        padding: 0 var(--space-md);
    }

    .hero {
        margin-top: -var(--space-lg);
        margin-bottom: var(--space-sm);
    }

    .hero-title {
        font-size: var(--font-size-lg);
    }

    .hero-description {
        font-size: var(--font-size-xs);
    }

    .content-wrapper {
        padding: var(--space-md);
    }

    .main-tool-container {
        padding: 0;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }

    .results-tabs {
        gap: var(--space-xs);
        overflow-x: auto;
    }

    .results-tab {
        padding: var(--space-sm) var(--space-md);
        font-size: var(--font-size-sm);
        white-space: nowrap;
    }

    .results-tab i {
        font-size: var(--font-size-base);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }

    .fun-stats-grid {
        grid-template-columns: 1fr;
    }

    .health-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }

    .planets-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .milestones-grid {
        grid-template-columns: 1fr;
    }

    .analytics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }

    .analytics-header {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }

    .reset-stats-btn {
        width: 100%;
        justify-content: center;
    }

    .result-card.main-result {
        flex-direction: column;
        text-align: center;
    }

    .result-value {
        font-size: var(--font-size-2xl);
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .usage-steps-horizontal {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .step-arrow {
        transform: rotate(90deg);
        font-size: 1.25rem;
    }

    .confetti-content {
        padding: var(--space-2xl);
    }

    .confetti-title {
        font-size: var(--font-size-2xl);
    }

    .birthday-icon {
        font-size: 4rem;
    }
}

@media (max-width: 480px) {
    .tool-container,
    .wide-container {
        padding: 0 var(--space-sm);
    }

    .hero {
        padding: var(--space-xs) 0;
        margin-bottom: var(--space-sm);
        margin-top: -var(--space-xl);
    }

    .hero-title {
        font-size: var(--font-size-md);
    }

    .content-wrapper {
        padding: var(--space-sm);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-value {
        font-size: var(--font-size-md);
    }

    .planets-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }

    .planet-icon {
        width: 60px;
        height: 60px;
        font-size: var(--font-size-2xl);
    }

    .analytics-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .analytics-card {
        padding: var(--space-sm);
    }

    .sticky-age-calculator {
        bottom: 80px;
        right: var(--space-sm);
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms;
        animation-iteration-count: 1;
        transition-duration: 0.01ms;
    }
}

/* MOBILE OPTIMIZATION */

@media (max-width: 900px) {
    .hero {
        padding: var(--space-xs) var(--space-md);
    }

    .hero-title {
        font-size: var(--font-size-lg);
    }

    .hero-description {
        font-size: var(--font-size-sm);
    }

    .content-wrapper {
        padding: var(--space-xl);
    }

    .section-header h2 {
        font-size: var(--font-size-lg);
    }

    .section-header p {
        font-size: var(--font-size-sm);
    }

    .tool-tabs {
        right: 48px;
        top: -40px;
    }

    .tool-tab {
        width: 40px;
        height: 40px;
    }

    .tool-tab i {
        font-size: 16px;
    }

    .usage-steps-horizontal {
        display: flex;
        flex-direction: row;
        justify-content: center;
        align-items: flex-start;
        gap: var(--space-md);
    }

    .usage-step {
        text-align: center;
        align-items: center;
        flex: 0 1 auto;
    }

    .step-arrow {
        display: flex;
        margin-top: var(--space-xl);
    }

    .step-icon {
        width: 56px;
        height: 56px;
    }

    .step-icon i {
        font-size: 1.125rem;
    }

    .usage-step h4 {
        font-size: var(--font-size-sm);
    }

    .usage-step p {
        font-size: var(--font-size-xs);
    }

    .quick-features {
        display: flex;
        flex-wrap: nowrap;
        gap: var(--space-xs);
    }

    .quick-feature {
        flex: 1;
        min-width: 0;
        padding: var(--space-sm);
    }

    .quick-feature span {
        font-size: 11px;
        line-height: 1.2;
    }

    /* Planets grid - last 2 wider to fill space */
    .planets-grid {
        grid-template-columns: repeat(6, 1fr);
    }

    .planet-card {
        grid-column: span 2;
    }

    .planet-card:nth-last-child(-n+2) {
        grid-column: span 3;
    }

    /* Hide sticky timer on tablet - shows on scroll */
    .sticky-age-calculator {
        display: none;
    }
}

@media (max-width: 768px) {
    body {
        background: linear-gradient(180deg, #05204b 0%, #031127 100%);
    }

    .page-layout {
        padding: 0 var(--space-md);
        padding-bottom: 60px;
        transform: none;
    }

    .main-content {
        transform: none;
        contain: none;
        background: radial-gradient(circle at 15% 10%, rgb(255 77 41 / 0%) -2%, transparent 30%),
                    radial-gradient(circle at 70% 85%, rgba(0, 85, 164, 0.12) 0%, transparent 55%);
    }

    .tool-container {
        padding: 0 var(--space-sm);
    }

    .hero {
        padding: var(--space-xs) var(--space-sm);
        margin-bottom: var(--space-md);
        transform: none;
        contain: none;
    }

    .tool-tabs {
        display: flex;
        position: fixed;
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        width: 100%;
        height: 52px;
        flex-direction: row;
        justify-content: center;
        align-items: center;
        gap: var(--space-xs);
        padding: 0 var(--space-md);
        background:
            linear-gradient(180deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 100%),
            linear-gradient(135deg, rgba(5,20,45,0.95) 0%, rgba(3,16,36,0.92) 50%, rgba(10,25,50,0.95) 100%);
        border-top: 1px solid rgba(255, 255, 255, 0.12);
        border-bottom: none;
        z-index: 1000;
    }

    .tool-tab {
        width: 40px;
        height: 40px;
        border-radius: var(--radius-md);
        border: 1px solid rgba(255, 255, 255, 0.15);
        background: rgba(255, 255, 255, 0.08);
        cursor: pointer;
        pointer-events: auto;
        flex-shrink: 0;
    }

    .tool-tab:active {
        background: rgba(255, 255, 255, 0.15);
    }

    .tool-tab:focus,
    .tool-tab:focus-visible {
        outline: none;
        border-color: rgba(255, 255, 255, 0.15);
    }

    .tool-tab:hover {
        border-color: rgba(255, 255, 255, 0.15);
    }

    .tool-tab:hover i {
        color: rgba(255, 255, 255, 0.9);
    }

    .tool-tab i {
        font-size: 16px;
    }

    .mobile-action-tab:focus,
    .mobile-action-tab:focus-visible {
        outline: none;
    }

    .mobile-action-tab:hover {
        border-color: rgba(255, 255, 255, 0.15);
    }

    .mobile-action-tab:hover i {
        color: rgba(255, 255, 255, 0.9);
    }

    .hero-title {
        font-size: var(--font-size-base);
    }

    .hero-description {
        font-size: var(--font-size-xs);
        max-width: 100%;
    }

    .content-wrapper {
        padding: var(--space-lg);
        border-radius: var(--radius-md);
    }

    .section-header {
        margin-bottom: var(--space-md);
    }

    .section-header h2 {
        font-size: var(--font-size-sm);
    }

    .section-header p {
        font-size: var(--font-size-xs);
    }

    .docs-link-btn {
        height: 28px;
        padding: 0 var(--space-sm);
        font-size: 10px;
        border-radius: var(--radius-md);
    }

    .docs-link-full {
        display: none;
    }

    .docs-link-short {
        display: inline;
    }

    .analytics-header {
        flex-direction: row;
        text-align: left;
        justify-content: space-between;
        align-items: center;
    }

    .analytics-header h4 {
        font-size: var(--font-size-sm);
    }

    .reset-stats-btn {
        width: auto;
        height: 28px;
        padding: 0 var(--space-sm);
        font-size: var(--font-size-xs);
        border-radius: var(--radius-md);
    }

    .analytics-card {
        padding: var(--space-sm);
    }

    .analytics-icon {
        width: 36px;
        height: 36px;
    }

    .analytics-icon i {
        font-size: var(--font-size-sm);
    }

    .analytics-value {
        font-size: var(--font-size-base);
    }

    .analytics-label {
        font-size: 9px;
    }

    .usage-compact {
        margin-top: var(--space-lg);
        gap: var(--space-sm);
    }

    .usage-steps-horizontal {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
        justify-items: center;
    }

    .usage-step {
        align-items: center;
        text-align: center;
    }

    .usage-step:nth-child(5) {
        grid-column: 1 / -1;
        justify-self: center;
        margin-top: var(--space-sm);
    }

    .step-arrow {
        display: none;
    }

    .step-icon {
        width: 56px;
        height: 56px;
    }

    .step-icon i {
        font-size: 1.125rem;
    }

    .usage-step h4 {
        font-size: var(--font-size-sm);
    }

    /* RESULT CARD - Mobile horizontal layout (icon left, text next) */
    .result-card.main-result {
        flex-direction: row;
        text-align: left;
        padding: var(--space-md);
    }

    .result-icon {
        width: 48px;
        height: 48px;
        margin: 0;
        flex-shrink: 0;
    }

    .result-icon i {
        font-size: var(--font-size-lg);
    }

    .result-content {
        flex: 1;
        text-align: left;
    }

    .result-value {
        font-size: var(--font-size-xl);
    }

    .result-subtitle {
        font-size: var(--font-size-sm);
    }

    /* Desktop result-actions hidden on mobile */
    .result-actions {
        display: none;
    }

    /* Mobile action tabs visible when results shown */
    .mobile-action-tab.visible {
        display: flex;
    }

    .usage-step p {
        font-size: var(--font-size-xs);
    }

    .quick-features {
        display: flex;
        flex-wrap: nowrap;
        gap: var(--space-xs);
        margin-top: var(--space-xs);
    }

    .quick-feature {
        flex: 1;
        padding: var(--space-sm);
        flex-direction: column;
        text-align: center;
    }

    /* Mobile divider */
    .mobile-divider {
        display: block;
        flex-shrink: 0;
        width: 1px;
        min-width: 1px;
        height: 32px;
        background: rgba(255, 255, 255, 0.2);
        margin: 0 4px;
    }

    .quick-feature i {
        font-size: var(--font-size-sm);
    }

    .quick-feature span {
        font-size: 9px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }

    .feature-card {
        display: grid;
        grid-template-columns: auto 1fr;
        grid-template-rows: auto auto;
        gap: 0 var(--space-md);
        text-align: left;
        padding: var(--space-md);
        align-items: start;
    }

    .feature-icon {
        grid-row: 1 / 3;
        align-self: center;
        width: 44px;
        height: 44px;
    }

    .feature-card h3 {
        grid-column: 2;
        grid-row: 1;
        font-size: var(--font-size-sm);
        margin-bottom: 0;
    }

    .feature-card p {
        grid-column: 2;
        grid-row: 2;
        font-size: var(--font-size-xs);
        margin: 0;
    }

    .faq-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .faq-question {
        min-height: 44px;
    }

    .faq-question h3 {
        font-size: var(--font-size-sm);
    }

    /* INPUT FIELDS - 2x2 grid */
    .input-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
        margin-bottom: var(--space-md);
    }

    .input-group {
        gap: var(--space-xs);
    }

    .input-label {
        font-size: var(--font-size-xs);
    }

    .date-input,
    .time-input {
        padding: var(--space-sm);
        font-size: var(--font-size-sm);
    }

    /* INFO GRID - 2 columns like health-stats and planets */
    .info-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }

    /* RESULTS TABS - 2x2 grid with border */
    .results-tabs {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 0;
        overflow-x: visible;
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.15);
        border-radius: var(--radius-md);
        padding: 0;
    }

    .results-tab {
        padding: var(--space-sm);
        font-size: var(--font-size-xs);
        white-space: nowrap;
        justify-content: center;
        border-radius: 0;
        border: none;
        border-right: 1px solid rgba(255, 255, 255, 0.1);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        background: transparent;
    }

    .results-tab:nth-child(2),
    .results-tab:nth-child(4) {
        border-right: none;
    }

    .results-tab:nth-child(3),
    .results-tab:nth-child(4) {
        border-bottom: none;
    }

    .results-tab.active {
        background: rgba(255, 77, 41, 0.15);
    }

    .results-tab i {
        font-size: var(--font-size-sm);
    }

    /* COMPACT CARDS - reduce padding and sizes */
    .info-card {
        padding: var(--space-sm);
        gap: var(--space-xs);
    }

    .info-icon {
        width: 36px;
        height: 36px;
    }

    .info-icon i {
        font-size: var(--font-size-sm);
    }

    .info-title {
        font-size: var(--font-size-xs);
    }

    .info-value {
        font-size: var(--font-size-sm);
    }

    .info-subtitle {
        font-size: 10px;
    }

    .stat-card {
        padding: var(--space-sm);
        gap: var(--space-xs);
    }

    .stat-icon {
        width: 32px;
        height: 32px;
    }

    .stat-icon i {
        font-size: var(--font-size-xs);
    }

    .stat-value {
        font-size: var(--font-size-sm);
    }

    .stat-label {
        font-size: 10px;
    }

    .health-stat-card {
        padding: var(--space-sm);
        gap: var(--space-xs);
    }

    .health-stat-icon {
        width: 32px;
        height: 32px;
    }

    .health-stat-icon i {
        font-size: var(--font-size-xs);
    }

    .health-stat-value {
        font-size: var(--font-size-sm);
    }

    .health-stat-label {
        font-size: 10px;
    }

    .planet-card {
        padding: var(--space-sm);
        gap: var(--space-xs);
    }

    .planet-icon {
        width: 32px;
        height: 32px;
    }

    .planet-name {
        font-size: var(--font-size-xs);
    }

    .planet-age {
        font-size: var(--font-size-sm);
    }

    .milestone-card {
        padding: var(--space-sm);
        gap: var(--space-xs);
    }

    .milestone-icon {
        width: 32px;
        height: 32px;
    }

    .milestone-value {
        font-size: var(--font-size-sm);
    }

    .milestone-label {
        font-size: 10px;
    }

    /* HIDE STICKY AGE DISPLAY */
    .sticky-age-calculator {
        display: none !important;
    }
}

@media (max-width: 480px) {
    .page-layout {
        padding: 0 var(--space-sm);
    }

    .tool-container {
        padding: 0 var(--space-xs);
    }

    .hero {
        padding: 0 var(--space-xs);
        margin-bottom: var(--space-md);
    }

    .hero-title {
        font-size: var(--font-size-sm);
        font-weight: 800;
    }

    .hero-description {
        font-size: 11px;
        line-height: 1.4;
    }

    .content-wrapper {
        padding: var(--space-md);
        border-radius: var(--radius-md);
    }

    .tool-tab {
        width: 36px;
        height: 36px;
    }

    .tool-tab i {
        font-size: 14px;
    }

    .section-header h2 {
        font-size: var(--font-size-sm);
    }

    .section-header p {
        font-size: 11px;
    }

    .analytics-header h4 {
        font-size: var(--font-size-xs);
    }

    .reset-stats-btn {
        height: 24px;
        padding: 0 var(--space-xs);
        font-size: 10px;
        border-radius: var(--radius-md);
    }

    .analytics-icon {
        width: 32px;
        height: 32px;
    }

    .analytics-icon i {
        font-size: var(--font-size-xs);
    }

    .analytics-value {
        font-size: var(--font-size-sm);
    }

    .analytics-label {
        font-size: 8px;
    }

    .usage-compact {
        margin-top: var(--space-md);
    }

    .usage-steps-horizontal {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
        justify-items: center;
    }

    .step-icon {
        width: 48px;
        height: 48px;
    }

    .step-icon i {
        font-size: 1rem;
    }

    .usage-step h4 {
        font-size: var(--font-size-xs);
    }

    .usage-step p {
        font-size: 10px;
    }

    .quick-feature {
        padding: var(--space-xs);
    }

    .quick-feature i {
        font-size: var(--font-size-xs);
    }

    .quick-feature span {
        font-size: 8px;
    }

    .features-grid {
        gap: var(--space-xs);
    }

    .feature-card {
        padding: var(--space-sm) var(--space-md);
        gap: 0 var(--space-sm);
    }

    .feature-icon {
        width: 36px;
        height: 36px;
        font-size: 0.875rem;
    }

    .feature-card h3 {
        font-size: var(--font-size-xs);
        margin-bottom: 0;
    }

    .feature-card p {
        font-size: 11px;
        line-height: 1.3;
    }

    .faq-question {
        padding: var(--space-md);
    }

    .faq-question h3 {
        font-size: var(--font-size-xs);
    }

    .faq-answer-content {
        padding: 0 var(--space-md) var(--space-md);
    }

    .faq-answer-content p {
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 375px) {
    .page-layout {
        padding: 0 var(--space-xs);
    }

    .tool-container {
        padding: 0;
    }

    .hero {
        margin-bottom: var(--space-sm);
    }

    .hero-title {
        font-size: var(--font-size-xs);
    }

    .hero-description {
        font-size: 10px;
    }

    .content-wrapper {
        padding: var(--space-sm);
    }

    .tool-tabs {
        gap: var(--space-xs);
    }

    .tool-tab {
        width: 32px;
        height: 32px;
    }

    .tool-tab i {
        font-size: 12px;
    }

    .section-header h2 {
        font-size: var(--font-size-xs);
    }

    .section-header p {
        font-size: 10px;
    }

    .analytics-header h4 {
        font-size: 11px;
    }

    .reset-stats-btn {
        height: 22px;
        font-size: 9px;
        border-radius: var(--radius-md);
    }

    .analytics-icon {
        width: 28px;
        height: 28px;
    }

    .analytics-value {
        font-size: var(--font-size-xs);
    }

    .analytics-label {
        font-size: 7px;
    }

    .usage-compact {
        margin-top: var(--space-sm);
    }

    .step-icon {
        width: 40px;
        height: 40px;
    }

    .step-icon i {
        font-size: 0.875rem;
    }

    .usage-step h4 {
        font-size: 11px;
    }

    .usage-step p {
        font-size: 9px;
    }

    .quick-feature span {
        font-size: 7px;
    }

    .feature-card {
        padding: var(--space-xs) var(--space-sm);
    }

    .feature-icon {
        width: 32px;
        height: 32px;
    }

    .feature-card h3 {
        font-size: 11px;
    }

    .feature-card p {
        font-size: 10px;
    }

    .faq-question h3 {
        font-size: 11px;
    }

    .faq-answer-content p {
        font-size: 11px;
    }
}