/* ==========================================================================
   WORDLE 2026 - MODERN APP DESIGN
   Premium UX with glassmorphism, smooth animations, and mobile-first approach
   ========================================================================== */

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

/* Design Tokens */
:root {
    /* Brand Colors - Keep the classic Wordle palette */
    --color-correct: #6aaa64;
    --color-correct-rgb: 106, 170, 100;
    --color-correct-light: #7bc96f;
    --color-correct-dark: #538d4e;
    
    --color-present: #c9b458;
    --color-present-rgb: 201, 180, 88;
    --color-present-light: #d4c16a;
    --color-present-dark: #b59f3b;
    
    --color-absent: #787c7e;
    --color-absent-rgb: 120, 124, 126;
    --color-absent-light: #939598;
    --color-absent-dark: #3a3a3c;
    
    /* Neutral Colors */
    --color-bg: #f0f2f5;
    --color-bg-secondary: #ffffff;
    --color-bg-tertiary: #e8eaed;
    --color-surface: #ffffff;
    --color-surface-elevated: #ffffff;
    
    --color-text-primary: #1a1a2e;
    --color-text-secondary: #4a4a68;
    --color-text-tertiary: #8b8ba7;
    --color-text-inverse: #ffffff;
    
    --color-border: rgba(0, 0, 0, 0.08);
    --color-border-strong: rgba(0, 0, 0, 0.15);
    
    /* Accent */
    --color-accent: #6366f1;
    --color-accent-light: #818cf8;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', monospace;
    
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-black: 900;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
    --shadow-glow: 0 0 40px rgba(var(--color-correct-rgb), 0.3);
    
    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --duration-fast: 150ms;
    --duration-normal: 250ms;
    --duration-slow: 400ms;
    
    /* Game specific */
    --tile-size: 64px;
    --tile-gap: 6px;
    --key-height: 56px;
    --key-gap: 6px;
}

/* Dark Mode - Auto */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --color-bg: #0f0f1a;
        --color-bg-secondary: #1a1a2e;
        --color-bg-tertiary: #252542;
        --color-surface: #1e1e32;
        --color-surface-elevated: #2a2a45;
        
        --color-text-primary: #f5f5f7;
        --color-text-secondary: #a0a0b8;
        --color-text-tertiary: #6b6b85;
        
        --color-border: rgba(255, 255, 255, 0.08);
        --color-border-strong: rgba(255, 255, 255, 0.15);
        
        --color-absent-dark: #58585a;
    }
}

/* Dark Mode - Manual */
[data-theme="dark"] {
    --color-bg: #0f0f1a;
    --color-bg-secondary: #1a1a2e;
    --color-bg-tertiary: #252542;
    --color-surface: #1e1e32;
    --color-surface-elevated: #2a2a45;
    
    --color-text-primary: #f5f5f7;
    --color-text-secondary: #a0a0b8;
    --color-text-tertiary: #6b6b85;
    
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-strong: rgba(255, 255, 255, 0.15);
    
    --color-absent-dark: #58585a;
}

/* Theme Toggle Button */
.theme-toggle {
    background: var(--color-bg-tertiary);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.theme-toggle:hover {
    background: var(--color-border-strong);
    transform: scale(1.05);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
    display: none;
}

/* Light mode: show moon icon */
:root:not([data-theme="dark"]) .theme-toggle .icon-moon {
    display: block;
}

/* Dark mode: show sun icon */
[data-theme="dark"] .theme-toggle .icon-sun {
    display: block;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .theme-toggle .icon-sun {
        display: block;
    }
    :root:not([data-theme="light"]) .theme-toggle .icon-moon {
        display: none;
    }
}

/* Base Styles */
html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
}

/* Import Inter font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;900&display=swap');

/* ==========================================================================
   LAYOUT
   ========================================================================== */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-4);
}

/* ==========================================================================
   HEADER - Modern App Style
   ========================================================================== */

header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-3) var(--space-4);
    margin: 0 calc(-1 * var(--space-4));
    margin-bottom: var(--space-6);
}

@media (prefers-color-scheme: dark) {
    header {
        background: rgba(15, 15, 26, 0.85);
    }
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    gap: var(--space-3);
    flex-wrap: wrap;
}

h1 {
    font-size: var(--text-2xl);
    font-weight: var(--font-black);
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--color-correct) 0%, var(--color-correct-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h1 a {
    text-decoration: none;
    -webkit-text-fill-color: inherit;
}

.subtitle {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    margin-top: var(--space-1);
    font-weight: var(--font-medium);
}

.divider {
    display: none;
}

/* Year Tabs in Header */
.year-tabs {
    display: flex;
    gap: var(--space-1);
    background: var(--color-bg-tertiary);
    padding: var(--space-1);
    border-radius: var(--radius-full);
}

.year-tab {
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: var(--font-bold);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: all var(--duration-fast) var(--ease-out);
}

.year-tab.active {
    background: var(--color-surface);
    color: var(--color-correct);
    box-shadow: var(--shadow-sm);
}

.year-tab:hover:not(.active) {
    color: var(--color-text-primary);
    background: rgba(0,0,0,0.05);
}

/* Language Switcher - Pill Style */
.language-switcher {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    background: var(--color-bg-tertiary);
    padding: var(--space-1);
    border-radius: var(--radius-full);
}

.language-switcher span {
    display: none;
}

.language-switcher a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 36px;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: var(--font-semibold);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: all var(--duration-fast) var(--ease-out);
}

.language-switcher a.active {
    background: var(--color-surface);
    color: var(--color-correct);
    box-shadow: var(--shadow-sm);
}

.language-switcher a:hover:not(.active) {
    color: var(--color-text-primary);
}

/* ==========================================================================
   MESSAGE - Toast Style ULTRA SIMPLE
   ========================================================================== */

/* Fil d'Ariane */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 0;
    margin-bottom: 16px;
    font-size: 14px;
}

.breadcrumb a,
.breadcrumb a:visited {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.breadcrumb a:hover {
    color: var(--color-correct);
}

.breadcrumb .sep {
    color: var(--color-text-tertiary);
    font-size: 12px;
}

.breadcrumb .current {
    color: var(--color-text-primary);
    font-weight: 600;
}

#message {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    background: #1a1a2e;
    color: #fff;
    padding: 16px 32px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    z-index: 99999;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    text-align: center;
    min-width: 200px;
    max-width: 90%;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
}

#message.show {
    opacity: 1;
    visibility: visible;
}

[data-theme="dark"] #message {
    background: #fff;
    color: #1a1a2e;
}

.game-page-container {
    max-width: 420px;
    margin: 0 auto;
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
}

/* Yesterday Banner */
.yesterday-banner {
    width: 100%;
    background: linear-gradient(135deg, var(--color-correct) 0%, var(--color-correct-dark) 100%);
    color: var(--color-text-inverse);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    text-align: center;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.yesterday-banner a {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* Timer - Modern Card */
.timer-container {
    width: 100%;
    background: var(--color-surface);
    padding: var(--space-4);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.timer-label {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-2);
}

.timer-display {
    font-size: var(--text-3xl);
    font-weight: var(--font-black);
    font-variant-numeric: tabular-nums;
    color: var(--color-text-primary);
    font-family: var(--font-mono);
}

.timer-bar {
    height: 6px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-top: var(--space-3);
}

.timer-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--color-correct) 0%, var(--color-correct-light) 100%);
    border-radius: var(--radius-full);
    transition: width 1s linear;
}

.timer-progress.urgent {
    background: linear-gradient(90deg, #ef4444 0%, #f87171 100%);
    animation: pulse-urgent 1s infinite;
}

@keyframes pulse-urgent {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* ==========================================================================
   GAME BOARD - Premium Tiles
   ========================================================================== */

#game-board {
    display: flex;
    flex-direction: column;
    gap: var(--tile-gap);
    padding: var(--space-2);
}

.row {
    display: flex;
    gap: var(--tile-gap);
    justify-content: center;
}

.tile {
    width: var(--tile-size);
    height: var(--tile-size);
    border: 2px solid var(--color-border-strong);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: calc(var(--tile-size) * 0.5);
    font-weight: var(--font-black);
    text-transform: uppercase;
    background: var(--color-surface);
    color: var(--color-text-primary);
    transition: all var(--duration-fast) var(--ease-out);
    user-select: none;
    position: relative;
    overflow: hidden;
}

.tile::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--duration-fast);
}

.tile.filled {
    border-color: var(--color-text-tertiary);
    animation: tile-pop 100ms var(--ease-out);
    transform: scale(1);
}

.tile.filled::before {
    opacity: 1;
}

@keyframes tile-pop {
    0% { transform: scale(1); }
    50% { transform: scale(1.08); }
    100% { transform: scale(1); }
}

.tile.correct {
    background: linear-gradient(135deg, var(--color-correct) 0%, var(--color-correct-dark) 100%);
    border-color: var(--color-correct);
    color: var(--color-text-inverse);
    box-shadow: 0 4px 12px rgba(var(--color-correct-rgb), 0.4);
}

.tile.present {
    background: linear-gradient(135deg, var(--color-present) 0%, var(--color-present-dark) 100%);
    border-color: var(--color-present);
    color: var(--color-text-inverse);
    box-shadow: 0 4px 12px rgba(var(--color-present-rgb), 0.4);
}

.tile.absent {
    background: linear-gradient(135deg, var(--color-absent) 0%, var(--color-absent-dark) 100%);
    border-color: var(--color-absent);
    color: var(--color-text-inverse);
}

.tile.flip {
    animation: tile-flip 600ms var(--ease-in-out) forwards;
}

@keyframes tile-flip {
    0% { transform: rotateX(0) scale(1); }
    50% { transform: rotateX(-90deg) scale(0.95); }
    100% { transform: rotateX(0) scale(1); }
}

.tile.shake {
    animation: tile-shake 500ms var(--ease-out);
}

@keyframes tile-shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
    20%, 40%, 60%, 80% { transform: translateX(4px); }
}

/* ==========================================================================
   KEYBOARD - Modern Glass Style
   ========================================================================== */

#keyboard {
    width: 100%;
    max-width: 500px;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
    padding: var(--space-3);
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
}

@media (prefers-color-scheme: dark) {
    #keyboard {
        background: rgba(30, 30, 50, 0.6);
    }
}

.keyboard-row {
    display: flex;
    justify-content: center;
    gap: var(--key-gap);
    margin-bottom: var(--key-gap);
}

.keyboard-row:last-child {
    margin-bottom: 0;
}

.key {
    height: var(--key-height);
    min-width: 32px;
    flex: 1;
    max-width: 44px;
    padding: 0;
    border: none;
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-text-primary);
    font-size: var(--text-base);
    font-weight: var(--font-bold);
    text-transform: uppercase;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-fast) var(--ease-out);
    -webkit-tap-highlight-color: transparent;
    box-shadow: var(--shadow-xs);
    position: relative;
    overflow: hidden;
}

.key::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.2) 0%, transparent 50%);
}

.key:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.key:active {
    transform: translateY(0) scale(0.95);
}

.key.large {
    flex: 1.5;
    max-width: 70px;
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
}

.key.correct {
    background: linear-gradient(135deg, var(--color-correct) 0%, var(--color-correct-dark) 100%);
    color: var(--color-text-inverse);
}

.key.present {
    background: linear-gradient(135deg, var(--color-present) 0%, var(--color-present-dark) 100%);
    color: var(--color-text-inverse);
}

.key.absent {
    background: linear-gradient(135deg, var(--color-absent) 0%, var(--color-absent-dark) 100%);
    color: var(--color-text-inverse);
}

.spacer {
    flex: 0.5;
}

/* ==========================================================================
   GAME RESULT MODAL - Modern Dialog
   ========================================================================== */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 150;
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-normal) var(--ease-out);
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

#game-result {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: var(--color-surface);
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    text-align: center;
    z-index: 200;
    width: 90%;
    max-width: 380px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-slow) var(--ease-out);
}

#game-result:not(.hidden) {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

#game-result.hidden {
    display: none;
}

.result-icon {
    font-size: 64px;
    margin-bottom: var(--space-4);
    animation: bounce-in 600ms var(--ease-out);
}

@keyframes bounce-in {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

#game-result.win .result-icon::before {
    content: '🎉';
}

#game-result.lose .result-icon::before {
    content: '😔';
}

#result-title {
    font-size: var(--text-2xl);
    font-weight: var(--font-black);
    margin-bottom: var(--space-2);
    color: var(--color-text-primary);
}

#result-message {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
}

#correct-word {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-correct);
    margin-bottom: var(--space-6);
    padding: var(--space-3) var(--space-6);
    background: rgba(var(--color-correct-rgb), 0.1);
    border-radius: var(--radius-lg);
    display: inline-block;
}

.result-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

/* Buttons - Modern Style */
.btn-primary, .btn-secondary, .btn-share, button, .button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-6);
    border: none;
    border-radius: var(--radius-lg);
    font-family: var(--font-family);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--duration-fast) var(--ease-out);
}

.btn-primary, .primary-button {
    background: linear-gradient(135deg, var(--color-correct) 0%, var(--color-correct-dark) 100%);
    color: var(--color-text-inverse);
    box-shadow: var(--shadow-md), 0 4px 12px rgba(var(--color-correct-rgb), 0.3);
}

.btn-primary:hover, .primary-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 8px 20px rgba(var(--color-correct-rgb), 0.4);
}

.btn-secondary, .secondary-button {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

.btn-secondary:hover, .secondary-button:hover {
    background: var(--color-border-strong);
    transform: translateY(-2px);
}

.outline-button {
    background: transparent;
    color: var(--color-text-primary);
    border: 2px solid var(--color-border-strong);
}

.outline-button:hover {
    border-color: var(--color-correct);
    color: var(--color-correct);
}

.btn-icon {
    font-size: var(--text-lg);
}

.share-section {
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border);
}

.btn-share {
    width: 100%;
    background: var(--color-accent);
    color: var(--color-text-inverse);
}

.btn-share:hover {
    background: var(--color-accent-light);
}

/* ==========================================================================
   GAME CONTROLS
   ========================================================================== */

.game-controls {
    margin-top: var(--space-4);
}

.back-to-calendar {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: var(--font-medium);
    font-size: var(--text-sm);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    transition: all var(--duration-fast) var(--ease-out);
}

.back-to-calendar:hover {
    color: var(--color-correct);
    background: rgba(var(--color-correct-rgb), 0.1);
}

/* ==========================================================================
   CALENDAR - Modern Grid
   ========================================================================== */

.calendar-section {
    background: var(--color-surface);
    padding: var(--space-6);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--space-8);
    border: 1px solid var(--color-border);
}

.calendar-section h2 {
    text-align: center;
    margin-bottom: var(--space-6);
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
}

.calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--space-2);
}

.day-header {
    text-align: center;
    font-weight: var(--font-semibold);
    font-size: var(--text-xs);
    padding: var(--space-2);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    font-weight: var(--font-semibold);
    font-size: var(--text-sm);
    transition: all var(--duration-fast) var(--ease-out);
    position: relative;
}

.day a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    text-decoration: none;
    color: inherit;
    border-radius: var(--radius-md);
}

.day:hover:not(.empty):not(.future) {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.day.empty {
    background: transparent;
}

.day.past {
    background: var(--color-bg-secondary);
}

.day.past a:hover {
    background: var(--color-bg-tertiary);
}

.day.today {
    background: linear-gradient(135deg, var(--color-correct) 0%, var(--color-correct-dark) 100%);
    color: var(--color-text-inverse);
    box-shadow: var(--shadow-md), 0 4px 12px rgba(var(--color-correct-rgb), 0.4);
    animation: today-pulse 2s infinite;
}

@keyframes today-pulse {
    0%, 100% { box-shadow: var(--shadow-md), 0 4px 12px rgba(var(--color-correct-rgb), 0.4); }
    50% { box-shadow: var(--shadow-lg), 0 8px 24px rgba(var(--color-correct-rgb), 0.5); }
}

.day.today a {
    color: var(--color-text-inverse);
}

.day.future {
    color: var(--color-text-tertiary);
    background: transparent;
    border: 2px dashed var(--color-border);
    cursor: not-allowed;
}

/* ==========================================================================
   MONTH NAVIGATION - Pills
   ========================================================================== */

.month-navigation {
    margin-bottom: var(--space-6);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.month-navigation::-webkit-scrollbar {
    display: none;
}

.month-selector {
    display: flex;
    gap: var(--space-2);
    padding: var(--space-2);
    min-width: max-content;
    justify-content: center;
}

.month-link {
    padding: var(--space-2) var(--space-4);
    background: var(--color-surface);
    border-radius: var(--radius-full);
    text-decoration: none;
    color: var(--color-text-secondary);
    font-weight: var(--font-medium);
    font-size: var(--text-sm);
    transition: all var(--duration-fast) var(--ease-out);
    white-space: nowrap;
    border: 1px solid var(--color-border);
}

.month-link.active {
    background: linear-gradient(135deg, var(--color-correct) 0%, var(--color-correct-dark) 100%);
    color: var(--color-text-inverse);
    border-color: var(--color-correct);
    box-shadow: var(--shadow-sm);
}

.month-link:hover:not(.active) {
    background: var(--color-bg-tertiary);
    border-color: var(--color-border-strong);
}

/* ==========================================================================
   HERO SECTION - Modern Card
   ========================================================================== */

.hero-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    align-items: center;
    padding: var(--space-8);
    background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-bg-tertiary) 100%);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--space-8);
    border: 1px solid var(--color-border);
    overflow: hidden;
    position: relative;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(var(--color-correct-rgb), 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-content h2, .hero-title {
    font-size: var(--text-3xl);
    font-weight: var(--font-black);
    margin-bottom: var(--space-4);
    line-height: 1.2;
}

.hero-content p, .hero-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
    font-size: var(--text-lg);
}

.hero-image {
    display: flex;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.wordle-preview {
    display: flex;
    flex-direction: column;
    gap: 4px;
    transform: rotate(-5deg);
    transition: transform var(--duration-slow) var(--ease-out);
}

.hero-section:hover .wordle-preview {
    transform: rotate(0deg) scale(1.05);
}

.preview-row {
    display: flex;
    gap: 4px;
}

.preview-tile {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
    font-weight: var(--font-black);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    border: 2px solid var(--color-border-strong);
    box-shadow: var(--shadow-sm);
}

.preview-tile.correct {
    background: linear-gradient(135deg, var(--color-correct) 0%, var(--color-correct-dark) 100%);
    border-color: var(--color-correct);
    color: var(--color-text-inverse);
}

.preview-tile.present {
    background: linear-gradient(135deg, var(--color-present) 0%, var(--color-present-dark) 100%);
    border-color: var(--color-present);
    color: var(--color-text-inverse);
}

.preview-tile.absent {
    background: linear-gradient(135deg, var(--color-absent) 0%, var(--color-absent-dark) 100%);
    border-color: var(--color-absent);
    color: var(--color-text-inverse);
}

/* ==========================================================================
   FEATURES SECTION - Modern Cards
   ========================================================================== */

.features-section {
    margin-bottom: var(--space-8);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.section-header h2 {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-2);
}

.section-subtitle {
    color: var(--color-text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
}

.feature-block {
    padding: var(--space-8);
    background: var(--color-surface);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--duration-normal) var(--ease-out);
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.feature-block::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-correct) 0%, var(--color-present) 50%, var(--color-correct-light) 100%);
    opacity: 0;
    transition: opacity var(--duration-fast);
}

.feature-block:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.feature-block:hover::before {
    opacity: 1;
}

.feature-icon {
    font-size: 48px;
    margin-bottom: var(--space-4);
    display: block;
}

.feature-block h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-2);
}

.feature-block p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
}

.language-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
}

/* ==========================================================================
   INSTRUCTIONS - Clean Design
   ========================================================================== */

.instructions {
    background: var(--color-surface);
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-8);
    border: 1px solid var(--color-border);
}

.instructions h2 {
    text-align: center;
    margin-bottom: var(--space-6);
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
}

.game-instructions {
    max-width: 500px;
    margin: 0 auto;
}

.game-instructions p {
    margin-bottom: var(--space-4);
    color: var(--color-text-secondary);
}

.game-instructions ul {
    list-style: none;
}

.game-instructions li {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-4);
    gap: var(--space-4);
    padding: var(--space-3);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
}

.example {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-weight: var(--font-black);
    font-size: var(--text-lg);
    color: var(--color-text-inverse);
    flex-shrink: 0;
}

.example.correct {
    background: linear-gradient(135deg, var(--color-correct) 0%, var(--color-correct-dark) 100%);
}

.example.present {
    background: linear-gradient(135deg, var(--color-present) 0%, var(--color-present-dark) 100%);
}

.example.absent {
    background: linear-gradient(135deg, var(--color-absent) 0%, var(--color-absent-dark) 100%);
}

/* ==========================================================================
   STATS SECTION
   ========================================================================== */

.stats-section {
    text-align: center;
    padding: var(--space-8);
    background: var(--color-surface);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-8);
    border: 1px solid var(--color-border);
}

.stats-section h2 {
    margin-bottom: var(--space-4);
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
}

.stats-section > p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.stats-data {
    display: flex;
    justify-content: center;
    gap: var(--space-10);
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-value {
    font-size: var(--text-4xl);
    font-weight: var(--font-black);
    background: linear-gradient(135deg, var(--color-correct) 0%, var(--color-correct-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    font-weight: var(--font-medium);
}

/* ==========================================================================
   FLASH MESSAGE
   ========================================================================== */

.flash-message {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border: 1px solid #f59e0b;
    color: #92400e;
    padding: var(--space-4);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-6);
    box-shadow: var(--shadow-md);
    animation: slide-down 400ms var(--ease-out);
}

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

.flash-icon {
    font-size: var(--text-xl);
}

.flash-text {
    flex: 1;
    font-weight: var(--font-medium);
}

.flash-close {
    background: none;
    border: none;
    font-size: var(--text-xl);
    color: #92400e;
    cursor: pointer;
    padding: var(--space-1);
    border-radius: var(--radius-full);
    transition: background var(--duration-fast);
    min-width: auto;
    min-height: auto;
    box-shadow: none;
}

.flash-close:hover {
    background: rgba(146, 64, 14, 0.1);
    transform: none;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

footer {
    text-align: center;
    padding: var(--space-8) var(--space-4);
    color: var(--color-text-tertiary);
    font-size: var(--text-sm);
}

.footer-links {
    margin-top: var(--space-3);
}

.footer-links a {
    color: var(--color-text-tertiary);
    text-decoration: none;
    transition: color var(--duration-fast);
    padding: var(--space-1) var(--space-2);
}

.footer-links a:hover {
    color: var(--color-correct);
}

/* ==========================================================================
   CONTENT PAGES
   ========================================================================== */

.page-container {
    max-width: 800px;
    margin: 0 auto;
}

.content-page {
    background: var(--color-surface);
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.content-page h1 {
    text-align: center;
    margin-bottom: var(--space-8);
    font-size: var(--text-3xl);
}

.content-page h2 {
    margin-top: var(--space-8);
    margin-bottom: var(--space-4);
    font-size: var(--text-xl);
    color: var(--color-correct);
}

.content-page p {
    margin-bottom: var(--space-4);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.content-page ul, .content-page ol {
    margin-left: var(--space-6);
    margin-bottom: var(--space-4);
    color: var(--color-text-secondary);
}

.content-page li {
    margin-bottom: var(--space-2);
}

.last-updated {
    text-align: center;
    color: var(--color-text-tertiary);
    font-style: italic;
    margin-top: var(--space-8);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

@media (max-width: 768px) {
    :root {
        --tile-size: 58px;
        --key-height: 52px;
    }
    
    .hero-section {
        grid-template-columns: 1fr;
        text-align: center;
        padding: var(--space-6);
    }
    
    .hero-content h2, .hero-title {
        font-size: var(--text-2xl);
    }
    
    .wordle-preview {
        transform: rotate(0deg);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-data {
        gap: var(--space-6);
    }
    
    .content-page {
        padding: var(--space-6);
    }
}

@media (max-width: 500px) {
    :root {
        --tile-size: min(58px, calc((100vw - 56px) / 5));
        --tile-gap: 5px;
        --key-height: 48px;
        --key-gap: 5px;
    }
    
    body {
        background: var(--color-bg-secondary);
    }
    
    .container {
        padding: var(--space-2);
    }
    
    header {
        margin: 0 calc(-1 * var(--space-2));
        padding: var(--space-2) var(--space-3);
    }
    
    .header-top {
        gap: var(--space-2);
    }
    
    h1 {
        font-size: var(--text-lg);
        flex-shrink: 0;
    }
    
    .year-tabs {
        order: 3;
        width: 100%;
        justify-content: center;
        margin-top: var(--space-2);
    }
    
    .year-tab {
        padding: var(--space-1) var(--space-3);
        font-size: var(--text-xs);
    }
    
    .language-switcher {
        flex-shrink: 0;
    }
    
    .language-switcher a {
        width: 32px;
        height: 28px;
        font-size: var(--text-xs);
    }
    
    .game-page-container {
        padding: var(--space-2);
        gap: var(--space-3);
    }
    
    .timer-container {
        padding: var(--space-3);
        border-radius: var(--radius-lg);
    }
    
    .timer-display {
        font-size: var(--text-2xl);
    }
    
    #keyboard {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        padding: var(--space-3);
        padding-bottom: calc(var(--space-3) + env(safe-area-inset-bottom, 0));
    }
    
    .key {
        height: 46px;
        min-width: 26px;
        font-size: var(--text-sm);
    }
    
    .key.large {
        min-width: 48px;
        font-size: 10px;
    }
    
    .calendar-section {
        padding: var(--space-4);
        border-radius: var(--radius-xl);
    }
    
    .calendar {
        gap: var(--space-1);
    }
    
    .day {
        font-size: var(--text-xs);
    }
    
    #game-result {
        padding: var(--space-6);
        border-radius: var(--radius-xl);
    }
    
    .yesterday-banner {
        font-size: var(--text-xs);
        padding: var(--space-2) var(--space-3);
    }
    
    .month-link {
        padding: var(--space-2) var(--space-3);
        font-size: var(--text-xs);
    }
    
    .preview-tile {
        width: 36px;
        height: 36px;
        font-size: var(--text-sm);
    }
    
    .content-page {
        padding: var(--space-4);
        border-radius: var(--radius-xl);
    }
}

@media (max-width: 360px) {
    :root {
        --tile-size: calc((100vw - 44px) / 5);
        --key-height: 42px;
    }
    
    .key {
        min-width: 22px;
        font-size: var(--text-xs);
    }
    
    .key.large {
        min-width: 40px;
        font-size: 9px;
    }
    
    h1 {
        font-size: var(--text-lg);
    }
}

/* Landscape Mobile */
@media (max-height: 600px) and (orientation: landscape) {
    :root {
        --tile-size: 42px;
        --key-height: 38px;
    }
    
    .timer-container {
        display: none;
    }
    
    header {
        position: relative;
        margin-bottom: var(--space-2);
    }
    
    .game-page-container {
        padding: var(--space-1);
        gap: var(--space-2);
    }
    
    #keyboard {
        position: relative;
    }
}

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

/* Focus Visible */
:focus-visible {
    outline: 3px solid var(--color-correct);
    outline-offset: 2px;
}

/* Print */
@media print {
    body {
        background: white;
    }
    
    .timer-container,
    #keyboard,
    .game-controls,
    footer {
        display: none;
    }
}