/* Random Web App - Tema Chiaro Azzurro */

:root {
    /* Palette Azzurro Chiaro */
    --primary-blue: #3498db;
    --primary-blue-dark: #2980b9;
    --primary-blue-light: #85c1e9;
    --primary-blue-lighter: #d6eaf8;
    --primary-blue-lightest: #ebf5fb;
    
    --secondary-blue: #5dade2;
    --secondary-blue-light: #aed6f1;
    --secondary-blue-lighter: #d4e9f7;
    
    --accent-blue: #1abc9c;
    --accent-blue-light: #76d7c4;
    --accent-blue-lighter: #a3e4d7;
    
    /* Colori di Supporto */
    --success-color: #27ae60;
    --success-light: #58d68d;
    --danger-color: #e74c3c;
    --danger-light: #f1948a;
    --warning-color: #f39c12;
    --warning-light: #f8c471;
    --info-color: #17a2b8;
    --info-light: #7fb3d3;
    
    /* Neutrali */
    --white: #ffffff;
    --gray-50: #f8f9fa;
    --gray-100: #e9ecef;
    --gray-200: #dee2e6;
    --gray-300: #ced4da;
    --gray-400: #adb5bd;
    --gray-500: #6c757d;
    --gray-600: #495057;
    --gray-700: #343a40;
    --gray-800: #212529;
    --gray-900: #1a1a1a;
    
    /* Ombre e Effetti */
    --shadow-sm: 0 0.125rem 0.25rem rgba(52, 152, 219, 0.075);
    --shadow: 0 0.5rem 1rem rgba(52, 152, 219, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(52, 152, 219, 0.175);
    --shadow-xl: 0 2rem 4rem rgba(52, 152, 219, 0.2);
    
    /* Gradienti */
    --gradient-primary: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    --gradient-light: linear-gradient(135deg, var(--primary-blue-lighter) 0%, var(--secondary-blue-lighter) 100%);
    --gradient-success: linear-gradient(135deg, var(--success-color) 0%, var(--success-light) 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-blue-light) 100%);
    
    /* Layout */
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 20px;
    --border-radius-xl: 28px;
    
    /* Transizioni */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
}

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* Base Styles */
* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--primary-blue-lightest) 0%, var(--secondary-blue-lighter) 50%, var(--primary-blue-lighter) 100%);
    background-attachment: fixed;
    min-height: 100vh;
    margin: 0;
    color: var(--gray-700);
    line-height: 1.6;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Navigation */
.navbar {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-blue);
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.navbar-brand:hover {
    color: var(--primary-blue-dark);
    transform: translateY(-1px);
}

.navbar-brand i {
    margin-right: 0.5rem;
    color: var(--accent-blue);
}

.version-badge {
    background: var(--gradient-accent);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    margin-left: auto;
    box-shadow: var(--shadow-sm);
}

.navbar-actions {
    margin-left: 1rem;
}

.navbar-actions .btn {
    margin-left: 0.5rem;
    border-width: 2px;
    transition: all 0.3s ease;
}

.navbar-actions .btn-outline-primary {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.navbar-actions .btn-outline-primary:hover {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
    color: white;
    transform: scale(1.05);
}

/* Hero Section */
.hero-section {
    text-align: center;
    padding: 3rem 0;
    margin-bottom: 2rem;
}

.hero-title {
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-blue);
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(52, 152, 219, 0.1);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Navigation Tabs */
.nav-container {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 0.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}

.nav-pills {
    margin: 0;
    padding: 0;
    border: none;
}

.nav-pills .nav-link {
    background: transparent;
    border: none;
    border-radius: var(--border-radius);
    color: var(--gray-600);
    font-weight: var(--font-weight-medium);
    padding: 0.875rem 1.5rem;
    margin: 0 0.25rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    min-height: 80px;
    position: relative;
    overflow: hidden;
}

.nav-pills .nav-link:hover {
    background: var(--primary-blue-lightest);
    color: var(--primary-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.nav-pills .nav-link.active {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}

.nav-pills .nav-link i {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.nav-pills .nav-link .nav-text {
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
}

/* Cards */
.card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
    overflow: hidden;
    margin-bottom: 2rem;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    background: var(--gradient-light);
    border-bottom: 1px solid var(--gray-200);
    padding: 1.5rem;
}

.card-title {
    margin: 0;
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--primary-blue);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.card-title i {
    color: var(--accent-blue);
    font-size: 1.75rem;
}

.card-body {
    padding: 2rem;
}

/* Buttons */
.btn {
    border: none;
    border-radius: var(--border-radius);
    padding: 0.75rem 1.5rem;
    font-weight: var(--font-weight-medium);
    font-size: 1rem;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    filter: brightness(1.05);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue-light);
}

.btn-secondary:hover {
    background: var(--primary-blue-lightest);
    border-color: var(--primary-blue);
    transform: translateY(-2px);
}

.btn-success {
    background: var(--gradient-success);
    color: var(--white);
}

.btn-success:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
    border-radius: var(--border-radius-lg);
    font-weight: var(--font-weight-semibold);
}

/* Form Controls */
.form-label {
    font-weight: var(--font-weight-medium);
    color: var(--gray-700);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-label i {
    color: var(--primary-blue);
    font-size: 0.875rem;
}

.form-control,
.form-select {
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    background: var(--white);
    color: var(--gray-700);
    transition: var(--transition);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
    outline: none;
}

.form-control::placeholder {
    color: var(--gray-400);
}

/* Result Display */
.result-display {
    background: var(--gradient-light);
    border: 1px solid var(--primary-blue-light);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin: 2rem 0;
    text-align: center;
    min-height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.result-display.d-none {
    display: none !important;
}

.result-display:not(.d-none) {
    animation: slideUp 0.5s ease-out;
}

.result-number {
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-blue);
    margin: 0 0 0.5rem 0;
    text-shadow: 0 2px 4px rgba(52, 152, 219, 0.1);
}

.result-text {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin: 0;
}

/* Statistics Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

/* Number display enhanced styles */
.number-item {
    display: inline-block;
    padding: 15px 20px;
    margin: 8px;
    border-radius: var(--border-radius-lg);
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    text-align: center;
    min-width: 80px;
    box-shadow: 
        0 4px 8px rgba(0,0,0,0.1),
        0 2px 4px rgba(0,0,0,0.06);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transform: translateY(20px);
    opacity: 0;
    transition: all var(--transition);
}

.number-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s ease;
}

.number-item:hover::before {
    left: 100%;
}

.number-animating {
    animation: numberSlideIn 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.number-pulse {
    animation: numberPulse 0.6s ease-in-out;
}

@keyframes numberSlideIn {
    0% {
        transform: translateY(30px) rotateX(-90deg);
        opacity: 0;
    }
    50% {
        transform: translateY(-5px) rotateX(0deg);
        opacity: 0.8;
    }
    100% {
        transform: translateY(0) rotateX(0deg);
        opacity: 1;
    }
}

@keyframes numberPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1) rotateZ(2deg); }
}

/* Statistics container styling */
.statistics-container {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%) !important;
    border: 1px solid #dee2e6;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.statistics-container h6 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.stat-card {
    background: var(--white);
    border: 1px solid var(--primary-blue-light);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.stat-value {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--gray-600);
    font-weight: var(--font-weight-medium);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Dice Styles */
.dice-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin: 1.5rem 0;
}

.dice {
    width: 80px;
    height: 80px;
    background: var(--white);
    border: 2px solid var(--primary-blue-light);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-blue);
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

.dice:hover {
    transform: rotate(5deg) scale(1.05);
    box-shadow: var(--shadow-lg);
}

.dice.rolling {
    animation: diceRoll 1s ease-in-out;
}

/* Coin Styles Enhanced */
.coin-container {
    display: flex;
    justify-content: center;
    margin: 2rem 0;
    perspective: 1000px;
    height: 200px;
    align-items: center;
}

.coin {
    width: 80px;
    height: 80px;
    margin: 10px;
    display: inline-block;
    perspective: 1000px;
    position: relative;
}

.coin-inner {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.6s ease-out;
}

.coin-face {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: bold;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
    backface-visibility: hidden;
    border: 3px solid var(--accent-color);
    box-shadow: 
        0 4px 8px rgba(0,0,0,0.2),
        inset 0 2px 4px rgba(255,255,255,0.3);
}

.coin-front {
    background: linear-gradient(145deg, #ffd700, #ffed4e);
    color: #8b4513;
}

.coin-back {
    background: linear-gradient(145deg, #c0c0c0, #e8e8e8);
    color: #2c3e50;
    transform: rotateY(180deg);
}

.face-text {
    font-size: 0.7rem;
    margin-top: 5px;
    font-weight: 600;
}

.coin-flipping .coin-inner {
    animation: coinFlipPhysics 2s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.coin-settled {
    animation: coinSettle 0.5s ease-out forwards;
}

@keyframes coinSettle {
    0% { transform: scale(1.1) rotateZ(5deg); }
    50% { transform: scale(0.95) rotateZ(-2deg); }
    100% { transform: scale(1) rotateZ(0deg); }
}

/* Enhanced Dice Styles with 3D Physics */
.dice-container {
    display: inline-block;
    margin: 10px;
    perspective: 1000px;
}

.dice {
    width: 80px;
    height: 80px;
    position: relative;
    transform-style: preserve-3d;
    transition: all 0.3s ease;
    cursor: pointer;
}

.dice-face {
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border: 2px solid var(--primary-blue-light);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-blue);
    box-shadow: 
        0 4px 8px rgba(0,0,0,0.1),
        inset 0 2px 4px rgba(255,255,255,0.5);
    backface-visibility: hidden;
}

.dice-front {
    transform: rotateY(0deg);
}

.dice-back {
    transform: rotateY(180deg);
}

.dice-result-glow {
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(52,152,219,0.3) 0%, transparent 70%);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-blue);
    text-shadow: 0 0 10px rgba(52,152,219,0.5);
    z-index: 2;
}

.dice-rolling-3d {
    animation: diceRoll3D 2s cubic-bezier(0.25, 0.46, 0.45, 0.94) infinite;
}

.dice-settling {
    animation: diceSettle 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.dice-final {
    animation: diceFinalBounce 0.6s ease-out forwards;
}

.dice-highlight {
    animation: diceHighlight 1s ease-in-out;
}

.dice-critical .dice-result-glow {
    animation: diceCritical 1.5s ease-in-out;
}

@keyframes diceRoll3D {
    0% { transform: rotateX(0deg) rotateY(0deg) rotateZ(0deg) translateY(0px); }
    25% { transform: rotateX(360deg) rotateY(180deg) rotateZ(90deg) translateY(-20px); }
    50% { transform: rotateX(720deg) rotateY(360deg) rotateZ(180deg) translateY(10px); }
    75% { transform: rotateX(1080deg) rotateY(540deg) rotateZ(270deg) translateY(-15px); }
    100% { transform: rotateX(1440deg) rotateY(720deg) rotateZ(360deg) translateY(0px); }
}

@keyframes diceSettle {
    0% { transform: rotateX(1440deg) rotateY(720deg) scale(1.1); }
    50% { transform: rotateX(0deg) rotateY(0deg) scale(0.95); }
    100% { transform: rotateX(0deg) rotateY(0deg) scale(1); }
}

@keyframes diceFinalBounce {
    0%, 20%, 40%, 60%, 80%, 100% { transform: scale(1); }
    10%, 30%, 50%, 70%, 90% { transform: scale(1.1); }
}

@keyframes diceHighlight {
    0% { box-shadow: 0 0 0 rgba(52,152,219,0.7); }
    50% { box-shadow: 0 0 20px rgba(52,152,219,0.7); }
    100% { box-shadow: 0 0 0 rgba(52,152,219,0.7); }
}

@keyframes diceCritical {
    0%, 100% { 
        color: var(--primary-blue);
        text-shadow: 0 0 10px rgba(52,152,219,0.5);
    }
    50% { 
        color: #ff6b6b;
        text-shadow: 0 0 15px rgba(255,107,107,0.8);
        transform: scale(1.1);
    }
}

/* Enhanced result display */
.dice-result-value {
    display: inline-block;
    padding: 5px 10px;
    margin: 2px;
    background: linear-gradient(135deg, var(--primary-blue-light), var(--primary-blue));
    color: white;
    border-radius: var(--border-radius);
    font-weight: bold;
    animation: resultSlideIn 0.5s ease-out forwards;
}

.dice-total-value {
    font-size: 2rem;
    color: var(--primary-blue);
    font-weight: bold;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
    animation: totalPulse 0.8s ease-out forwards;
}

@keyframes resultSlideIn {
    0% { transform: translateY(-10px); opacity: 0; }
    100% { transform: translateY(0); opacity: 1; }
}

@keyframes totalPulse {
    0% { transform: scale(0.8); opacity: 0; }
    50% { transform: scale(1.1); opacity: 0.8; }
    100% { transform: scale(1); opacity: 1; }
}

/* Wheel Enhanced Styles */
.wheel-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 2rem 0;
    position: relative;
}

.wheel-config {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
    width: 100%;
    max-width: 500px;
}

.wheel-config h6 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section-input-group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    align-items: center;
}

.section-input {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-sm);
}

.section-color {
    width: 40px;
    height: 40px;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
}

.remove-section {
    background: var(--danger-color);
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    padding: 0.5rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.add-section {
    background: var(--success-color);
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    margin-top: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.wheel-display {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.wheel {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 6px solid var(--primary-blue);
    transition: transform 4s cubic-bezier(0.25, 0.1, 0.25, 1);
    cursor: pointer;
    background: var(--white);
}

.wheel-section {
    position: absolute;
    width: 50%;
    height: 50%;
    transform-origin: 100% 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-semibold);
    font-size: 0.875rem;
    text-align: center;
    padding: 1rem 0.5rem;
    color: var(--white);
    text-shadow: 1px 1px 2px rgba(0,0,0,0.7);
    border-right: 2px solid var(--white);
    border-bottom: 2px solid var(--white);
}

.wheel.spinning {
    animation: wheelSpinPhysics 4s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.wheel-pointer {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;
    border-top: 35px solid var(--danger-color);
    z-index: 10;
    filter: drop-shadow(var(--shadow));
}

.wheel-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background: var(--primary-blue);
    border-radius: 50%;
    z-index: 5;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: var(--font-weight-bold);
}

.wheel-result-display {
    margin-top: 1.5rem;
    text-align: center;
    padding: 1rem;
    background: var(--gradient-light);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--primary-blue-light);
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.wheel-result-text {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-blue);
}

/* File Upload */
.file-upload-area {
    border: 3px dashed var(--primary-blue-light);
    border-radius: var(--border-radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    background: var(--primary-blue-lightest);
    transition: var(--transition);
    cursor: pointer;
}

.file-upload-area:hover {
    border-color: var(--primary-blue);
    background: var(--primary-blue-lighter);
    transform: scale(1.02);
}

.file-upload-area.dragover {
    border-color: var(--accent-blue);
    background: var(--accent-blue-lighter);
    transform: scale(1.05);
}

.file-upload-icon {
    font-size: 3rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.file-upload-text {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.file-upload-hint {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* History Lists */
.history-list {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    padding: 1rem;
    max-height: 200px;
    overflow-y: auto;
}

.history-item {
    padding: 0.5rem;
    border-bottom: 1px solid var(--gray-200);
    font-family: monospace;
    font-size: 0.875rem;
    color: var(--gray-700);
}

.history-item:last-child {
    border-bottom: none;
}

/* Toast Messages */
.toast {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.toast-success {
    border-left: 4px solid var(--success-color);
}

.toast-error {
    border-left: 4px solid var(--danger-color);
}

/* Enhanced Physics Animations */
@keyframes diceRollPhysics {
    0% { 
        transform: rotate(0deg) scale(1) translateY(0);
    }
    15% {
        transform: rotate(180deg) scale(1.2) translateY(-20px);
    }
    30% {
        transform: rotate(360deg) scale(1.1) translateY(-40px);
    }
    45% {
        transform: rotate(540deg) scale(1.3) translateY(-20px);
    }
    60% {
        transform: rotate(720deg) scale(1.1) translateY(-10px);
    }
    75% {
        transform: rotate(900deg) scale(1.05) translateY(-5px);
    }
    90% {
        transform: rotate(1080deg) scale(1.02) translateY(-2px);
    }
    100% { 
        transform: rotate(1080deg) scale(1) translateY(0);
    }
}

@keyframes coinFlipPhysics {
    0% { 
        transform: rotateY(0deg) rotateX(0deg) translateY(0px);
    }
    10% {
        transform: rotateY(180deg) rotateX(90deg) translateY(-30px);
    }
    20% {
        transform: rotateY(360deg) rotateX(180deg) translateY(-50px);
    }
    30% {
        transform: rotateY(540deg) rotateX(270deg) translateY(-60px);
    }
    40% {
        transform: rotateY(720deg) rotateX(360deg) translateY(-50px);
    }
    50% {
        transform: rotateY(900deg) rotateX(450deg) translateY(-40px);
    }
    60% {
        transform: rotateY(1080deg) rotateX(540deg) translateY(-30px);
    }
    70% {
        transform: rotateY(1260deg) rotateX(630deg) translateY(-20px);
    }
    80% {
        transform: rotateY(1440deg) rotateX(720deg) translateY(-10px);
    }
    90% {
        transform: rotateY(1620deg) rotateX(810deg) translateY(-5px);
    }
    100% { 
        transform: rotateY(1800deg) rotateX(900deg) translateY(0px);
    }
}

@keyframes wheelSpinPhysics {
    0% { 
        transform: rotate(0deg);
    }
    70% {
        transform: rotate(1800deg);
    }
    85% {
        transform: rotate(1890deg);
    }
    95% {
        transform: rotate(1935deg);
    }
    100% { 
        transform: rotate(var(--final-rotation, 1800deg));
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3) translateY(-100px);
    }
    50% {
        opacity: 1;
        transform: scale(1.05) translateY(-20px);
    }
    70% {
        transform: scale(0.95) translateY(-10px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-3px); }
    20%, 40%, 60%, 80% { transform: translateX(3px); }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 5px var(--primary-blue); }
    50% { box-shadow: 0 0 20px var(--primary-blue), 0 0 30px var(--primary-blue-light); }
}

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

/* Utility Classes */
.text-primary { color: var(--primary-blue) !important; }
.text-secondary { color: var(--secondary-blue) !important; }
.text-success { color: var(--success-color) !important; }
.text-danger { color: var(--danger-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-muted { color: var(--gray-500) !important; }

.bg-primary { background: var(--gradient-primary) !important; }
.bg-light { background: var(--gray-50) !important; }
.bg-white { background: var(--white) !important; }

.border-primary { border-color: var(--primary-blue) !important; }
.border-light { border-color: var(--gray-200) !important; }

.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow { box-shadow: var(--shadow) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .nav-pills .nav-link {
        padding: 0.75rem 1rem;
        min-height: 70px;
    }
    
    .nav-pills .nav-link .nav-text {
        font-size: 0.75rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
    
    .result-number {
        font-size: 2rem;
    }
    
    .dice {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .coin {
        width: 120px;
        height: 120px;
    }
    
    .coin-side {
        font-size: 3rem;
    }
    
    .wheel {
        width: 250px;
        height: 250px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 0.75rem;
    }
    
    .hero-section {
        padding: 2rem 0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-pills .nav-link .nav-text {
        display: none;
    }
}

/* Focus States for Accessibility */
.btn:focus,
.form-control:focus,
.form-select:focus,
.nav-link:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Custom Scrollbar */
.history-list::-webkit-scrollbar {
    width: 6px;
}

.history-list::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: 3px;
}

.history-list::-webkit-scrollbar-thumb {
    background: var(--primary-blue-light);
    border-radius: 3px;
}

.history-list::-webkit-scrollbar-thumb:hover {
    background: var(--primary-blue);
}

/* Loading States */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--gray-200);
    border-radius: 50%;
    border-top-color: var(--primary-blue);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Enhanced List Selection Styles */
.selected-items {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    padding: 2rem 1rem;
}

.selected-item {
    position: relative;
    background: linear-gradient(145deg, #4285f4, #1a73e8);
    color: white;
    padding: 1.5rem 2.5rem;
    border-radius: 15px;
    font-size: 1.3rem;
    font-weight: 600;
    text-align: center;
    box-shadow: 
        0 8px 16px rgba(66, 133, 244, 0.3),
        0 2px 4px rgba(0, 0, 0, 0.1);
    animation: listItemReveal 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    transform: scale(0) rotate(-180deg);
    opacity: 0;
    border: 2px solid rgba(255, 255, 255, 0.2);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.selected-item:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 
        0 12px 24px rgba(66, 133, 244, 0.4),
        0 4px 8px rgba(0, 0, 0, 0.15);
    border-color: rgba(255, 255, 255, 0.4);
}

.selected-item:before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4, #feca57, #ff9ff3);
    border-radius: 17px;
    z-index: -1;
    animation: borderGlow 3s ease-in-out infinite;
    opacity: 0;
    background-size: 300% 300%;
}

.selected-item:after {
    content: '🎯';
    position: absolute;
    top: -10px;
    right: -10px;
    font-size: 1.5rem;
    opacity: 0;
    animation: targetIcon 0.6s ease-out 0.8s forwards;
    transform: scale(0) rotate(180deg);
}

.selected-item.winner {
    background: linear-gradient(145deg, #ff6b6b, #ee5a24);
    animation: listItemReveal 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards, 
               winnerPulse 2s ease-in-out infinite 1s;
}

.selected-item.winner:before {
    opacity: 1;
}

.selected-item.winner:after {
    content: '👑';
}

/* List Selection Result Animations */
@keyframes listItemReveal {
    0% {
        transform: scale(0) rotate(-180deg);
        opacity: 0;
    }
    50% {
        transform: scale(1.1) rotate(-90deg);
        opacity: 0.7;
    }
    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

@keyframes borderGlow {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

@keyframes targetIcon {
    0% {
        opacity: 0;
        transform: scale(0) rotate(180deg);
    }
    50% {
        opacity: 1;
        transform: scale(1.2) rotate(90deg);
    }
    100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

@keyframes winnerPulse {
    0%, 100% {
        box-shadow: 
            0 8px 16px rgba(255, 107, 107, 0.3),
            0 2px 4px rgba(0, 0, 0, 0.1);
    }
    50% {
        box-shadow: 
            0 12px 24px rgba(255, 107, 107, 0.5),
            0 4px 8px rgba(0, 0, 0, 0.15),
            0 0 20px rgba(255, 107, 107, 0.4);
    }
}

/* List Result Container Enhancement */
#list-result.result-area {
    background: linear-gradient(135deg, #f8f9ff, #e8f2ff);
    border: 2px solid rgba(66, 133, 244, 0.1);
    border-radius: 20px;
    padding: 2rem;
    margin-top: 1.5rem;
    position: relative;
    overflow: hidden;
    animation: resultAreaSlide 0.6s ease-out;
}

#list-result.result-area:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #4285f4, transparent);
    animation: loadingLine 1.5s ease-in-out;
}

@keyframes resultAreaSlide {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes loadingLine {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

/* List Result Header */
#list-result h5 {
    color: #1a73e8;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-align: center;
    font-size: 1.4rem;
    text-shadow: 0 2px 4px rgba(26, 115, 232, 0.1);
}

/* Multiple Selection Display Enhancement with Staggered Animation */
.selected-item:nth-child(1) { animation-delay: 0.1s; }
.selected-item:nth-child(2) { animation-delay: 0.3s; }
.selected-item:nth-child(3) { animation-delay: 0.5s; }
.selected-item:nth-child(4) { animation-delay: 0.7s; }
.selected-item:nth-child(5) { animation-delay: 0.9s; }
.selected-item:nth-child(6) { animation-delay: 1.1s; }
.selected-item:nth-child(7) { animation-delay: 1.3s; }
.selected-item:nth-child(8) { animation-delay: 1.5s; }
.selected-item:nth-child(9) { animation-delay: 1.7s; }
.selected-item:nth-child(10) { animation-delay: 1.9s; }