/* FunBookies Design System - Shared Styles */

:root {
    /* Colors */
    --color-cream: #FAF8F5;
    --color-white: #FFFFFF;
    --color-charcoal: #2C2D26;
    --color-soft-black: #1A1A1A;
    --color-sage: #9FC7AA;
    --color-sage-light: #E8F2EB;
    --color-sage-dark: #7BA88A;
    --color-terracotta: #EFA487;
    --color-terracotta-light: #FDF4F0;
    --color-terracotta-dark: #E8926F;
    --color-dusty-blue: #A8C4D4;
    --color-honey: #E8D4A8;
    --color-mallow: #D4C4B0;
    --color-border: #E8E4DD;
    --color-text-muted: #5A5A52;
    --color-success: #7BA88A;
    --color-warning: #E8A86B;
    --color-error: #D4736B;

    /* Typography */
    --font-display: 'Fraunces', Georgia, serif;
    --font-body: 'DM Sans', -apple-system, sans-serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;

    /* Layout */
    --max-width: 1200px;
    --max-width-narrow: 700px;
    --border-radius: 8px;
    --border-radius-lg: 12px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 1.125rem;
    line-height: 1.6;
    color: var(--color-charcoal);
    background: var(--color-cream);
    min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 500;
    line-height: 1.2;
    color: var(--color-soft-black);
}

h1 { font-size: clamp(2rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: var(--space-md); }
h3 { font-size: 1.25rem; font-weight: 600; }

p {
    max-width: 60ch;
}

a {
    color: var(--color-charcoal);
    text-decoration-color: var(--color-mallow);
    text-underline-offset: 3px;
    transition: all 0.2s ease;
}

a:hover {
    text-decoration-color: var(--color-terracotta);
}

/* Layout */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.container-narrow {
    max-width: var(--max-width-narrow);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Page Header */
.page-header {
    padding: var(--space-lg) 0 var(--space-md);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    margin-bottom: var(--space-md);
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--color-charcoal);
}

.page-title {
    text-align: center;
    margin-bottom: var(--space-xs);
}

.page-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 1.1rem;
    margin: 0 auto;
}

/* Cards */
.card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--space-md);
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.card-elevated {
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 0.875rem 1.75rem;
    border: none;
    border-radius: var(--border-radius);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--color-terracotta);
    color: var(--color-soft-black);
}

.btn-primary:hover {
    background: var(--color-terracotta-dark);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--color-sage);
    color: var(--color-white);
}

.btn-secondary:hover {
    background: var(--color-sage-dark);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--color-charcoal);
    border: 1.5px solid var(--color-charcoal);
}

.btn-outline:hover {
    background: var(--color-charcoal);
    color: var(--color-white);
}

.btn-ghost {
    background: var(--color-cream);
    color: var(--color-charcoal);
}

.btn-ghost:hover {
    background: var(--color-border);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Form Elements */
.input, .select {
    width: 100%;
    padding: 0.875rem 1rem;
    font-family: var(--font-body);
    font-size: 1rem;
    background: var(--color-white);
    border: 1.5px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: all 0.2s;
}

.input:focus, .select:focus {
    outline: none;
    border-color: var(--color-sage);
    box-shadow: 0 0 0 3px var(--color-sage-light);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 4px;
    background: var(--color-sage-light);
    color: var(--color-sage-dark);
}

.badge-terracotta {
    background: var(--color-terracotta-light);
    color: var(--color-terracotta-dark);
}

/* Level Colors */
.level-pink { background: #F8E8EC; color: #9D6B7A; }
.level-yellow { background: #F8F3E4; color: #9D8B5A; }
.level-orange { background: #F8F0E8; color: #9D7B5A; }
.level-red { background: #F8E8E8; color: #9D5A5A; }
.level-purple { background: #F0E8F8; color: #7A5A9D; }
.level-blue { background: #E8F0F8; color: #5A7A9D; }
.level-green { background: #E8F8EC; color: #5A9D6B; }
.level-gold { background: #F8F4E8; color: #9D8B5A; }

/* Grid Layouts */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

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

.grid-auto {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-md);
}

@media (max-width: 768px) {
    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
    }
}

/* Activity Card */
.activity-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-white);
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: all 0.2s ease;
}

.activity-card:hover {
    background: var(--color-sage-light);
    transform: translateY(-2px);
}

.activity-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-cream);
    border-radius: var(--border-radius);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.activity-info h3 {
    margin-bottom: 4px;
    font-family: var(--font-body);
    font-weight: 600;
}

.activity-info p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin: 0;
}

/* Game/Assessment Card */
.game-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--space-lg);
    box-shadow: 0 8px 30px rgba(0,0,0,0.06);
}

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.game-header h1 {
    font-size: 1.5rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
}

.stat-box {
    background: var(--color-cream);
    padding: var(--space-md);
    border-radius: var(--border-radius);
    text-align: center;
}

.stat-box .num {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
}

.stat-box .label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.stat-box.success .num { color: var(--color-success); }
.stat-box.warning .num { color: var(--color-warning); }
.stat-box.muted .num { color: var(--color-text-muted); }

/* Word Display (for games) */
.word-display {
    font-family: var(--font-display);
    font-size: clamp(3rem, 10vw, 5rem);
    font-weight: 500;
    color: var(--color-soft-black);
    text-align: center;
    padding: var(--space-lg) 0;
}

/* Letter Tiles */
.letter-tile {
    width: 56px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-sage);
    color: var(--color-white);
    border: none;
    border-radius: var(--border-radius);
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.letter-tile:hover {
    background: var(--color-sage-dark);
    transform: translateY(-2px);
}

.letter-tile.used {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Word Slots */
.word-slot {
    width: 56px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-cream);
    border: 2px dashed var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 500;
    color: var(--color-charcoal);
}

.word-slot.filled {
    border-style: solid;
    border-color: var(--color-sage);
    background: var(--color-sage-light);
}

.word-slot.correct {
    border-color: var(--color-success);
    background: #E8F5E9;
}

.word-slot.wrong {
    border-color: var(--color-error);
    background: #FFEBEE;
    animation: shake 0.3s;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}

/* Feedback Messages */
.feedback {
    text-align: center;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    min-height: 40px;
}

.feedback.success { color: var(--color-success); }
.feedback.error { color: var(--color-error); }

/* Flashcard */
.flashcard {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    cursor: pointer;
    transition: all 0.2s;
}

.flashcard:hover {
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
}

.flashcard-word {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 500;
    color: var(--color-soft-black);
}

/* Progress Bar */
.progress-bar {
    height: 8px;
    background: var(--color-border);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--color-sage);
    border-radius: 4px;
    transition: width 0.3s ease;
}

/* Chip/Tag */
.chip {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--color-cream);
    border-radius: 20px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
}

.chip:hover {
    background: var(--color-sage-light);
}

.chip.active {
    background: var(--color-sage);
    color: var(--color-white);
}

/* Score Badge */
.score-badge {
    background: var(--color-sage-light);
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    color: var(--color-sage-dark);
}

/* Activity Area (vertical centering for game content) */
.activity-area {
    min-height: 60vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* Level Select */
.level-select {
    display: flex;
    gap: 8px;
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
}

.level-group {
    display: flex;
    gap: 6px;
    align-items: center;
}

.level-group-label {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

/* Utilities */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.4s ease forwards;
}

/* Responsive */
@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-xs);
    }

    .stat-box {
        padding: var(--space-sm);
    }

    .stat-box .num {
        font-size: 1.5rem;
    }

    .game-card {
        padding: var(--space-md);
    }
}

/* Celebration Effects */
.confetti {
    position: fixed;
    width: 10px;
    height: 10px;
    top: -10px;
    z-index: 10000;
    pointer-events: none;
    animation: confetti-fall linear forwards;
}

@keyframes confetti-fall {
    to {
        transform: translateY(100vh) rotate(720deg);
        opacity: 0;
    }
}

@keyframes pop-scale {
    0% { transform: translate(-50%, -50%) scale(0); opacity: 0; }
    50% { transform: translate(-50%, -50%) scale(1.3); opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(0); opacity: 0; }
}

.celebration-emoji {
    pointer-events: none;
}

/* Results Card */
.results-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.results-overlay.visible {
    opacity: 1;
}

.results-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--space-lg);
    text-align: center;
    max-width: 420px;
    width: 90%;
    animation: fadeIn 0.4s ease forwards;
}

.results-card h2 {
    color: var(--color-sage-dark);
    margin-bottom: var(--space-sm);
}

.results-message {
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.results-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.results-stat {
    background: var(--color-cream);
    padding: var(--space-sm);
    border-radius: var(--border-radius);
}

.results-stat-value {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--color-sage-dark);
}

.results-stat-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.results-buttons {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

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

/* Accessibility: Focus indicators */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
    outline: 3px solid var(--color-sage, #8BC49E);
    outline-offset: 2px;
}

/* Toast notifications */
#toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 90vw;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: 8px;
    background: var(--color-charcoal, #2D3748);
    color: white;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    transform: translateX(120%);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    min-width: 250px;
    max-width: 400px;
}

.toast-visible {
    transform: translateX(0);
    opacity: 1;
}

.toast-hiding {
    transform: translateX(120%);
    opacity: 0;
}

.toast-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 14px;
    flex-shrink: 0;
}

.toast-info .toast-icon {
    background: #3182CE;
}

.toast-success .toast-icon {
    background: var(--color-sage, #8BC49E);
    color: var(--color-charcoal, #2D3748);
}

.toast-warning .toast-icon {
    background: #ECC94B;
    color: var(--color-charcoal, #2D3748);
}

.toast-error .toast-icon {
    background: #E53E3E;
}

.toast-message {
    flex: 1;
    font-size: 14px;
    line-height: 1.4;
}

.toast-close {
    background: none;
    border: none;
    color: rgba(255,255,255,0.7);
    font-size: 20px;
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
}

.toast-close:hover {
    color: white;
}

@media (max-width: 480px) {
    #toast-container {
        left: 10px;
        right: 10px;
        bottom: 10px;
    }

    .toast {
        min-width: auto;
        max-width: none;
    }
}