/* TrainX - Modern Dark Theme CSS */
:root {
    --primary-purple: #8B5FBF;
    --primary-pink: #E91E63;
    --accent-cyan: #00E5FF;
    --accent-lime: #CDDC39;
    --dark-bg: #0A0A0B;
    --card-bg: #1A1A1D;
    --surface-bg: #16161A;
    --text-primary: #FFFFFF;
    --text-secondary: #B8B8B8;
    --gradient-purple: linear-gradient(135deg, #8B5FBF 0%, #6A4C93 100%);
    --gradient-pink: linear-gradient(135deg, #E91E63 0%, #AD1457 100%);
    --gradient-cyan: linear-gradient(135deg, #00E5FF 0%, #0091EA 100%);
    --gradient-lime: linear-gradient(135deg, #CDDC39 0%, #8BC34A 100%);
    --gradient-purple-pink: linear-gradient(135deg, #8B5FBF 0%, #E91E63 100%);
    --neon-glow: 0 0 20px rgba(139, 95, 191, 0.4);
}

* {
    box-sizing: border-box;
}

body {
    background: var(--dark-bg);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Background Animation */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(139, 95, 191, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(233, 30, 99, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(0, 229, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* Glassmorphism cards */
.glass-card {
    background: rgba(26, 26, 29, 0.8);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.card {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

/* Modern stat cards with neon effects */
.stat-card {
    position: relative;
    color: white;
    border-radius: 5px;
    padding: 1.5rem;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: inherit;
    filter: blur(20px);
    z-index: -1;
}

.stat-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--neon-glow);
}

.stat-card-purple {
    background: var(--gradient-purple);
}

.stat-card-pink {
    background: var(--gradient-pink);
}

.stat-card-cyan {
    background: var(--gradient-cyan);
}

.stat-card-lime {
    background: var(--gradient-lime);
    color: #2E2E2E;
}

.stat-card i {
    opacity: 0.9;
    margin-bottom: 0.8rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.stat-card h5 {
    font-weight: 700;
    font-size: 2rem;
    margin-bottom: 0.2rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.stat-card small {
    font-weight: 500;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.75rem;
}

/* Navbar with modern glass effect */
.navbar {
    background: rgba(26, 26, 29, 0.95) !important;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.5rem;
    background: var(--gradient-purple-pink);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-brand i {
    background: var(--gradient-purple-pink);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-right: 0.5rem;
}

.nav-link {
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    color: var(--text-secondary) !important;
}

.nav-link:hover, .nav-link.active {
    color: var(--accent-cyan) !important;
    transform: translateY(-2px);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-cyan);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

.dropdown-menu {
    background: rgba(26, 26, 29, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 5px;
}

.dropdown-item {
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.dropdown-item:hover {
    background: rgba(139, 95, 191, 0.2);
    color: var(--text-primary);
}

/* Buttons with modern style */
.btn-primary {
    background: var(--gradient-purple-pink);
    border: none;
    border-radius: 5px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 95, 191, 0.4);
}

.btn-outline-primary {
    border: 2px solid var(--primary-purple);
    color: var(--primary-purple);
    border-radius: 5px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-outline-primary:hover {
    background: var(--gradient-purple);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 95, 191, 0.4);
}

.btn-outline-info {
    border: 2px solid var(--accent-cyan);
    color: var(--accent-cyan);
    border-radius: 5px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-outline-info:hover {
    background: var(--gradient-cyan);
    border-color: transparent;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 229, 255, 0.4);
}

/* Form controls */
.form-control, .form-select {
    background: rgba(26, 26, 29, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 5px;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    background: rgba(26, 26, 29, 0.9);
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 0.2rem rgba(0, 229, 255, 0.25);
    color: var(--text-primary);
}

.form-label {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.8rem;
}

/* Alerts with modern styling */
.alert {
    border: none;
    border-radius: 5px;
    backdrop-filter: blur(10px);
}

.alert-success {
    background: rgba(76, 175, 80, 0.2);
    color: #4CAF50;
    border: 1px solid rgba(76, 175, 80, 0.3);
}

.alert-danger {
    background: rgba(244, 67, 54, 0.2);
    color: #F44336;
    border: 1px solid rgba(244, 67, 54, 0.3);
}

.alert-info {
    background: rgba(0, 229, 255, 0.2);
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 229, 255, 0.3);
}

/* Main content */
main {
    padding-top: 2rem;
    padding-bottom: 3rem;
    min-height: calc(100vh - 76px);
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--text-primary);
}

.display-4 {
    background: var(--gradient-purple-pink);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Intensity badges */
.intensity-badge {
    font-size: 0.75rem;
    padding: 0.4rem 0.8rem;
    border-radius: 5px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-purple);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-pink);
}

/* Loading animation */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.pulse {
    animation: pulse 2s infinite;
}

/* Search and filter styles */
.search-bar {
    background: rgba(26, 26, 29, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 5px;
    padding: 0.75rem 1.5rem;
    margin-bottom: 1.5rem;
}

.filter-pills .btn {
    border-radius: 5px;
    margin: 0.25rem;
    font-size: 0.875rem;
}

/* Export button styles */
.btn-export {
    background: var(--gradient-lime);
    color: #2E2E2E;
    border: none;
    border-radius: 5px;
    font-weight: 600;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
}

.btn-export:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(205, 220, 57, 0.4);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .stat-card h5 {
        font-size: 1.5rem;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .search-bar {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
}

/* PWA-specific styles */
@media (display-mode: standalone) {
    /* Hide elements when running as PWA */
    .pwa-hide {
        display: none !important;
    }
    
    /* Adjust top padding when running as PWA (no browser UI) */
    body {
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
    }
    
    /* Status bar area for notch devices */
    .navbar {
        padding-top: calc(1rem + env(safe-area-inset-top));
    }
}

/* PWA Install button animation */
#pwa-install-btn {
    animation: pulse-install 2s ease-in-out infinite;
}

@keyframes pulse-install {
    0% {
        box-shadow: 0 4px 15px rgba(139, 95, 191, 0.3);
    }
    50% {
        box-shadow: 0 6px 20px rgba(139, 95, 191, 0.5);
        transform: translateY(-2px);
    }
    100% {
        box-shadow: 0 4px 15px rgba(139, 95, 191, 0.3);
    }
}

/* Offline indicator styles */
.offline-indicator {
    position: fixed;
    top: 70px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(220, 53, 69, 0.95);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
    z-index: 1050;
    animation: slideInDown 0.3s ease;
}

@keyframes slideInDown {
    from {
        transform: translateX(-50%) translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }
}

/* Touch improvements for mobile */
@media (hover: none) and (pointer: coarse) {
    /* Increase touch targets on mobile */
    .btn-sm {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    /* Improve form controls for touch */
    .form-control, .form-select {
        padding: 0.75rem 1rem;
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    /* Better spacing for touch */
    .workout-item, .match-item {
        padding: 1rem !important;
        margin-bottom: 0.75rem !important;
    }
}