/* Apple-Inspired Design System */
/* Clean, elegant, premium aesthetic with sophisticated gradients and typography */

:root {
    /* Apple-inspired color palette - sophisticated and muted */
    --apple-blue: #007AFF;
    --apple-blue-dark: #0051D5;
    --apple-blue-light: #5AC8FA;
    --apple-gray-50: #F5F5F7;
    --apple-gray-100: #E8E8ED;
    --apple-gray-200: #D2D2D7;
    --apple-gray-300: #AEAEB2;
    --apple-gray-400: #8E8E93;
    --apple-gray-500: #636366;
    --apple-gray-600: #48484A;
    --apple-gray-700: #3A3A3C;
    --apple-gray-800: #2C2C2E;
    --apple-gray-900: #1C1C1E;
    --apple-green: #34C759;
    --apple-orange: #FF9500;
    --apple-red: #FF3B30;
    --apple-purple: #AF52DE;
}

/* Typography - San Francisco inspired */
body {
    background-color: #FFFFFF;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: var(--apple-gray-900);
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: var(--apple-gray-900);
    letter-spacing: -0.03em;
    line-height: 1.1;
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.015em;
}

h2 {
    font-size: 2.5rem;
    font-weight: 600;
}

h3 {
    font-size: 1.75rem;
    font-weight: 600;
}

/* Navbar - Minimal Apple style */
.navbar {
    background-color: rgba(255, 255, 255, 0.8) !important;
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    box-shadow: inset 0 -1px 0 0 rgba(0, 0, 0, 0.1);
    padding: 0.75rem 0;
    border-bottom: 0.5px solid rgba(0, 0, 0, 0.08);
}

.navbar-brand {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--apple-gray-900) !important;
    letter-spacing: -0.02em;
}

.nav-link {
    font-weight: 400;
    color: var(--apple-gray-800) !important;
    transition: color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0.5rem 1rem !important;
    font-size: 0.9375rem;
}

.nav-link:hover {
    color: var(--apple-blue) !important;
}

/* Buttons - Apple style */
.btn {
    border-radius: 980px;
    font-weight: 500;
    padding: 12px 28px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    font-size: 1rem;
    letter-spacing: -0.01em;
}

.btn-primary {
    background: linear-gradient(180deg, #007AFF 0%, #0051D5 100%);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(0, 122, 255, 0.39);
}

.btn-primary:hover {
    background: linear-gradient(180deg, #0051D5 0%, #003DA5 100%);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px 0 rgba(0, 122, 255, 0.5);
}

.btn-outline-primary {
    color: var(--apple-blue);
    border: 2px solid var(--apple-blue);
    background: transparent;
    box-shadow: none;
}

.btn-outline-primary:hover {
    background-color: var(--apple-blue);
    border-color: var(--apple-blue);
    color: white;
    transform: translateY(-1px);
}

.btn-lg {
    padding: 16px 38px;
    font-size: 1.125rem;
    font-weight: 500;
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.875rem;
}

/* Cards - Minimal with soft shadows */
.card {
    border-radius: 18px;
    border: none;
    background-color: white;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.card:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    transform: translateY(-4px);
}

.card-header {
    border-bottom: none;
    padding: 1.5rem 1.75rem;
    background-color: transparent;
}

.card-body {
    padding: 1.75rem;
}

/* Stats Cards - Apple-inspired */
.stats-card {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    background: linear-gradient(135deg, #FFFFFF 0%, #F5F5F7 100%);
}

.stats-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}

.stats-card .bg-primary {
    background: linear-gradient(135deg, #E6F0FF 0%, #CCE0FF 100%) !important;
}

.stats-card .text-primary {
    color: var(--apple-blue) !important;
}

.stats-card .bg-success {
    background: linear-gradient(135deg, #E5F9ED 0%, #CCF4DB 100%) !important;
}

.stats-card .text-success {
    color: var(--apple-green) !important;
}

.stats-card .bg-info {
    background: linear-gradient(135deg, #E0F2FE 0%, #BAE6FD 100%) !important;
}

.stats-card .text-info {
    color: var(--apple-blue-light) !important;
}

/* Badges - Apple pill style */
.badge {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 980px;
    letter-spacing: 0.01em;
}

.badge.bg-success {
    background: linear-gradient(135deg, var(--apple-green) 0%, #30B350 100%) !important;
}

.badge.bg-danger {
    background: linear-gradient(135deg, var(--apple-red) 0%, #E62E23 100%) !important;
}

.badge.bg-secondary {
    background: linear-gradient(135deg, var(--apple-gray-400) 0%, var(--apple-gray-500) 100%) !important;
}

.badge.bg-primary {
    background: linear-gradient(135deg, var(--apple-blue) 0%, var(--apple-blue-dark) 100%) !important;
}

.badge.bg-info {
    background: linear-gradient(135deg, var(--apple-blue-light) 0%, #4DB8E8 100%) !important;
}

/* Tables - Clean minimal design */
.table {
    border-collapse: separate;
    border-spacing: 0;
}

.table th {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--apple-gray-500);
    font-weight: 500;
    border-bottom: 1px solid var(--apple-gray-100);
    padding: 14px 18px;
    background-color: var(--apple-gray-50);
}

.table td {
    vertical-align: middle;
    padding: 18px;
    border-bottom: 1px solid var(--apple-gray-100);
    color: var(--apple-gray-800);
}

.table-hover tbody tr {
    transition: background-color 0.2s ease;
}

.table-hover tbody tr:hover {
    background-color: var(--apple-gray-50);
}

/* Forms - Apple style inputs */
.form-control,
.form-select {
    border-radius: 10px;
    border: 1px solid var(--apple-gray-200);
    padding: 14px 16px;
    font-size: 1rem;
    transition: all 0.2s ease;
    background-color: white;
    color: var(--apple-gray-900);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--apple-blue);
    box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.1);
    outline: none;
    background-color: white;
}

.form-label {
    font-weight: 500;
    color: var(--apple-gray-900);
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
    letter-spacing: -0.01em;
}

/* Alerts - Clean design */
.alert {
    border-radius: 14px;
    border: none;
    padding: 1.25rem 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.alert-success {
    background: linear-gradient(135deg, #E5F9ED 0%, #D4F5E0 100%);
    color: #0E6B2F;
}

.alert-danger {
    background: linear-gradient(135deg, #FEE2E2 0%, #FECACA 100%);
    color: #991B1B;
}

.alert-info {
    background: linear-gradient(135deg, #DBEAFE 0%, #BFDBFE 100%);
    color: #1E40AF;
}

.alert-warning {
    background: linear-gradient(135deg, #FFF7ED 0%, #FFEDD5 100%);
    color: #92400E;
}

/* Text colors */
.text-primary {
    color: var(--apple-blue) !important;
}

.text-muted {
    color: var(--apple-gray-500) !important;
}

.text-success {
    color: var(--apple-green) !important;
    font-weight: 500;
}

/* Footer - Minimal and clean */
footer.bg-primary {
    background: linear-gradient(180deg, var(--apple-gray-900) 0%, #000000 100%) !important;
    padding: 3.5rem 0 !important;
}

/* Modals - Apple style */
.modal-content {
    border-radius: 20px;
    border: none;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    overflow: hidden;
}

.modal-header {
    border-bottom: 1px solid var(--apple-gray-100);
    padding: 1.75rem;
}

.modal-footer {
    border-top: 1px solid var(--apple-gray-100);
    padding: 1.75rem;
}

/* Hero sections - Elegant gradients */
.hero-section {
    background: linear-gradient(180deg, #007AFF 0%, #0051D5 100%);
    color: white;
    border-radius: 20px;
    padding: 5rem 3rem;
}

/* Apple-style glass effect */
.glass-effect {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

/* Code/monospace */
code {
    background-color: var(--apple-gray-50);
    color: var(--apple-gray-800);
    padding: 3px 8px;
    border-radius: 6px;
    font-family: 'SF Mono', 'Monaco', 'Courier New', monospace;
    font-size: 0.875em;
}

/* Input groups */
.input-group {
    border-radius: 10px;
    overflow: hidden;
}

.input-group-text {
    background-color: var(--apple-gray-50);
    border: 1px solid var(--apple-gray-200);
    border-right: none;
    color: var(--apple-gray-600);
    font-weight: 500;
}

.input-group .form-control {
    border-left: none;
}

/* Shadows - Subtle and refined */
.shadow-sm {
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05) !important;
}

.shadow {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03) !important;
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 1.875rem;
    }
    
    .btn-lg {
        padding: 14px 30px;
        font-size: 1rem;
    }
    
    .card-body {
        padding: 1.5rem !important;
    }
    
    .hero-section {
        padding: 3rem 1.5rem;
    }
}

/* Animations - Smooth Apple-style */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Progress bars */
.progress {
    height: 6px;
    border-radius: 980px;
    background-color: var(--apple-gray-100);
}

.progress-bar {
    border-radius: 980px;
    background: linear-gradient(90deg, var(--apple-blue) 0%, var(--apple-blue-light) 100%);
}

/* Video */
video {
    border-radius: 16px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
}

/* Loading states */
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Utility classes */
.text-gradient {
    background: linear-gradient(135deg, var(--apple-blue) 0%, var(--apple-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Icon circles */
.rounded-circle {
    display: flex;
    align-items: center;
    justify-content: center;
}