/* Modern UI/UX Design System for PlayPoint */

:root {
    /* Color Palette */
    --primary-color: #4361ee;
    --primary-dark: #3a56d4;
    --secondary-color: #3f37c9;
    --success-color: #4cc9f0;
    --warning-color: #f72585;
    --danger-color: #7209b7;
    --info-color: #4895ef;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --white: #ffffff;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #4cc9f0 0%, #4895ef 100%);
    --gradient-warning: linear-gradient(135deg, #f72585 0%, #7209b7 100%);
    --gradient-info: linear-gradient(135deg, #4895ef 0%, #4361ee 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.2);
    --shadow-xl: 0 12px 24px rgba(0,0,0,0.25);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Modern Card Design */
.modern-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: none;
    transition: all var(--transition-normal);
    overflow: hidden;
}

.modern-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.modern-card .card-header {
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    padding: var(--spacing-lg);
    font-weight: 600;
}

.modern-card .card-body {
    padding: var(--spacing-lg);
}

/* Modern Buttons */
.btn-modern {
    border-radius: var(--radius-md);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-lg);
    transition: all var(--transition-normal);
    border: none;
    position: relative;
    overflow: hidden;
}

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

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

.btn-modern:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

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

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

/* Modern Navigation */
.navbar-modern {
    background: var(--gradient-primary) !important;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
}

.navbar-modern .navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

.navbar-modern .nav-link {
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md) !important;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    margin: 0 var(--spacing-xs);
}

.navbar-modern .nav-link:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-1px);
}

.navbar-modern .nav-link.active {
    background: rgba(255,255,255,0.2);
    color: var(--white) !important;
}

/* Points Display */
.points-display-modern {
    background: rgba(255,255,255,0.15);
    border-radius: var(--radius-xl);
    padding: var(--spacing-sm) var(--spacing-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    transition: all var(--transition-normal);
}

.points-display-modern:hover {
    background: rgba(255,255,255,0.25);
    transform: scale(1.05);
}

.points-number {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--white);
}

/* Game Cards */
.game-card-modern {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    overflow: hidden;
    position: relative;
}

.game-card-modern:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.game-card-modern .game-image {
    height: 200px;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.game-card-modern:hover .game-image {
    transform: scale(1.1);
}

.game-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(67, 97, 238, 0.9) 0%, rgba(58, 86, 212, 0.9) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.game-card-modern:hover .game-overlay {
    opacity: 1;
}

/* Task Cards */
.task-card-modern {
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border-left: 4px solid var(--primary-color);
}

.task-card-modern:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.task-card-modern.completed {
    border-left-color: var(--success-color);
    background: linear-gradient(135deg, rgba(76, 201, 240, 0.05) 0%, rgba(72, 149, 239, 0.05) 100%);
}

/* Reward Cards */
.reward-card-modern {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.reward-card-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.reward-card-modern:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* Loading Animations */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes slideInUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

/* Animation Classes */
.animate-slide-in {
    animation: slideInUp 0.6s ease-out;
}

.animate-fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* Progress Bars */
.progress-modern {
    height: 8px;
    border-radius: var(--radius-xl);
    background: var(--light-color);
    overflow: hidden;
}

.progress-modern .progress-bar {
    background: var(--gradient-success);
    border-radius: var(--radius-xl);
    transition: width var(--transition-slow);
}

/* Responsive Design */
@media (max-width: 768px) {
    .modern-card .card-body {
        padding: var(--spacing-md);
    }
    
    .game-card-modern .game-image {
        height: 150px;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --light-color: #2d3748;
        --white: #1a202c;
        --dark-color: #f7fafc;
    }
    
    body {
        background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
        color: var(--dark-color);
    }
    
    .modern-card,
    .game-card-modern,
    .task-card-modern,
    .reward-card-modern {
        background: #2d3748;
        color: var(--dark-color);
    }
}

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

/* Focus States */
.btn-modern:focus,
.navbar-modern .nav-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --shadow-sm: 0 2px 4px rgba(0,0,0,0.3);
        --shadow-md: 0 4px 8px rgba(0,0,0,0.4);
        --shadow-lg: 0 8px 16px rgba(0,0,0,0.5);
        --shadow-xl: 0 12px 24px rgba(0,0,0,0.6);
    }
}