:root {
    /* === Color Palette === */
    --color-bg: #fdfbfb;
    --color-card: #ffffff;
    --color-text: #4a4a4a;
    --color-text-muted: #888;
    --color-text-light: #666;
    
    /* Pastel Colors */
    --color-pastel-primary: #ffb7b2;
    --color-pastel-secondary: #b2e2f2;
    --color-pastel-tertiary: #b2f2bb;
    --color-pastel-accent: #f2e2b2;
    --color-pastel-highlight: #ff9aa2;
    
    /* Semantic Colors */
    --color-success: #2ecc71;
    --color-danger: #ff7675;
    --color-info: #6a89cc;
    --color-gold-start: #ffd700;
    --color-gold-end: #ffec8b;
    --color-bust: #d1d8e0;
    
    /* Neutral Grays */
    --color-gray-50: #fdfdfd;
    --color-gray-100: #f9f9f9;
    --color-gray-200: #f0f7f9;
    --color-gray-300: #e0e0e0;
    --color-gray-400: #eee;
    --color-white: #ffffff;
    --color-white-alpha: rgba(255, 255, 255, 0.5);
    
    /* Log Entry Colors */
    --color-log-info: #e3f2fd;
    --color-log-win: #e8f5e9;
    --color-log-lose: #ffebee;
    --color-log-neutral: #f5f5f5;
    
    /* === Spacing Scale === */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 18px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;
    
    /* === Typography === */
    --font-size-xs: 0.8rem;
    --font-size-sm: 0.85rem;
    --font-size-base: 0.9rem;
    --font-size-md: 0.95rem;
    --font-size-lg: 1.1rem;
    --font-size-xl: 1.2rem;
    --font-size-2xl: 1.3rem;
    --font-size-3xl: 1.6rem;
    --font-size-4xl: 2rem;
    
    --font-weight-normal: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: bold;
    
    --line-height-tight: 1.3;
    --line-height-normal: 1.5;
    
    /* === Layout === */
    --container-max-width: 600px;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-full: 20px;
    
    /* === Shadows === */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 15px 35px rgba(0, 0, 0, 0.1);
    --shadow-gold: 0 0 8px rgba(255, 215, 0, 0.6);
    
    /* === Transitions === */
    --transition-fast: 0.1s;
    --transition-normal: 0.3s;
    --transition-slow: 0.4s;
    --easing-ease: ease;
    --easing-ease-out: ease-out;
    --easing-back: cubic-bezier(0.175, 0.885, 0.32, 1.275);
    
    /* === Z-Index Scale === */
    --z-base: 1;
    --z-overlay: 2;
    --z-modal: 1000;
}

/* === Base Styles === */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    margin: 0;
    display: flex;
    justify-content: center;
    padding: 10px;
}

h1, h2, h3 {
    margin: 0;
}

h2 {
    font-size: var(--font-size-lg);
    border-bottom: 2px solid var(--color-pastel-secondary);
    padding-bottom: 3px;
    margin-bottom: var(--spacing-sm);
    color: var(--color-info);
}

/* === Layout Components === */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    background: var(--color-card);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

header {
    text-align: center;
    margin-bottom: 1rem;
}

header h1 {
    color: var(--color-pastel-highlight);
    font-size: var(--font-size-4xl);
}

header p {
    margin: 2px 0 0;
    opacity: 0.8;
    font-size: var(--font-size-base);
}

/* === Button Component === */
.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius-full);
    cursor: pointer;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-md);
    transition: transform var(--transition-fast), opacity var(--transition-normal);
}

.btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(1px);
}

.btn.primary {
    background-color: var(--color-pastel-primary);
    color: var(--color-white);
}

.btn.secondary {
    background-color: var(--color-pastel-secondary);
    color: var(--color-text);
}

.btn.tertiary {
    background-color: var(--color-pastel-accent);
    color: var(--color-text);
}

#roll-message,
#start-btn {
    color: var(--color-text);
}

/* === Score Board Component === */
.scores-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.score-item {
    padding: var(--spacing-sm);
    background: var(--color-gray-100);
    border-radius: var(--border-radius-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-left: 4px solid var(--color-pastel-primary);
    font-size: var(--font-size-base);
}

.score-item.winner {
    background: var(--color-pastel-tertiary);
    border-left-color: var(--color-success);
}

/* === Game Area Component === */
.game-area {
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 120px;
    text-align: center;
    padding: 10px var(--spacing-md);
    background: var(--color-gray-200);
    border-radius: var(--border-radius-lg);
    margin-bottom: 1rem;
}

#round-info {
    min-height: 50px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

#round-info h3 {
    font-size: var(--font-size-md);
    opacity: 0.9;
}

#turn-stats p {
    margin: 0;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
}

.rolls-history {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    font-style: italic;
    margin-right: var(--spacing-xs);
}

#rolls-display {
    color: var(--color-text);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    font-style: normal;
}

.total-badge {
    color: var(--color-danger);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-xl);
}

#current-total {
    font-size: var(--font-size-2xl);
}

.controls {
    margin-top: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    height: 40px;
}

/* === Progress Bars Component === */
.turn-order-area {
    margin-bottom: var(--spacing-lg);
}

.progress-bars-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: var(--color-gray-100);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-gray-400);
}

.progress-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 10px;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-normal) var(--easing-ease);
    background: var(--color-white-alpha);
    border: 1px solid transparent;
}

.progress-row.active {
    background: var(--color-white);
    box-shadow: var(--shadow-md);
    border-color: var(--color-pastel-secondary);
    transform: translateX(5px);
}

.progress-row.leader {
    border-color: var(--color-pastel-highlight);
    background: #fff9fa;
}

.progress-row.leader .progress-score-text {
    color: var(--color-danger);
    transform: scale(1.1);
    transition: transform var(--transition-normal);
}

.progress-row.done {
    opacity: 0.8;
}

.progress-label {
    min-width: 80px;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
}

.progress-bar-outer {
    flex-grow: 1;
    height: 16px;
    background: var(--color-gray-300);
    border-radius: var(--border-radius-md);
    position: relative;
}

.progress-bar-inner {
    height: 100%;
    width: 0%;
    background: var(--color-pastel-secondary);
    transition: width var(--transition-slow) var(--easing-back), background var(--transition-normal);
    border-radius: var(--border-radius-md);
}

.progress-bar-inner.gold {
    background: linear-gradient(90deg, var(--color-gold-start), var(--color-gold-end)) !important;
    box-shadow: var(--shadow-gold);
}

.progress-bar-inner.bust {
    background: var(--color-bust) !important;
}

.progress-icon {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.4rem;
    transition: left var(--transition-slow) var(--easing-back);
    z-index: var(--z-overlay);
    pointer-events: none;
    line-height: 1;
}

.progress-score-text {
    min-width: 45px;
    text-align: right;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-light);
}

/* === Log Component === */
.log-container {
    height: 120px;
    overflow-y: auto;
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-400);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    text-align: left;
}

.log-entry {
    margin: var(--spacing-xs) 0;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
}

.log-entry.info {
    background-color: var(--color-log-info);
}

.log-entry.win {
    background-color: var(--color-log-win);
}

.log-entry.lose {
    background-color: var(--color-log-lose);
}

.log-entry.neutral {
    background-color: var(--color-log-neutral);
}

/* === Modal Component === */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-modal);
}

.modal-content {
    background: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
    max-width: 450px;
    width: 90%;
    text-align: left;
    box-shadow: var(--shadow-lg);
    animation: slideDown var(--transition-slow) var(--easing-ease-out);
}

@keyframes slideDown {
    0% {
        transform: translateY(-50px);
        opacity: 0;
    }
    100% {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-content h2 {
    text-align: center;
    color: var(--color-pastel-highlight);
    border-bottom: none;
    font-size: var(--font-size-3xl);
    margin-bottom: 1rem;
}

.modal-body p {
    line-height: var(--line-height-normal);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-md);
}

.modal-body ul {
    list-style: none;
    padding: 0;
}

.modal-body li {
    margin: var(--spacing-sm) 0;
    padding-left: 25px;
    position: relative;
    line-height: var(--line-height-tight);
    font-size: var(--font-size-base);
}

.modal-body li::before {
    content: '✨';
    position: absolute;
    left: 0;
}

.modal-content .btn {
    display: block;
    width: 100%;
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
}

/* === Utility Classes === */
.hidden {
    display: none !important;
}