/* Modern Design System for 단기필마 */

:root {
    /* Modern color palette */
    --primary-color: #5B47E0;
    --primary-dark: #4736B8;
    --primary-light: #7B69F0;
    --secondary-color: #FF6B6B;
    --success-color: #51CF66;
    --warning-color: #FFD93D;
    --danger-color: #FF6B6B;
    --info-color: #4ECDC4;
    
    /* Neutral colors */
    --gray-900: #1A1A2E;
    --gray-800: #2D2D44;
    --gray-700: #40405A;
    --gray-600: #565672;
    --gray-500: #8B8CA3;
    --gray-400: #B4B5C4;
    --gray-300: #D4D5E0;
    --gray-200: #ECEDF5;
    --gray-100: #F7F8FC;
    --white: #FFFFFF;
    
    /* Typography */
    --font-family: 'Noto Sans KR', 'Inter', -apple-system, BlinkMacSystemFont, system-ui, Roboto, 'Helvetica Neue', 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

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

/* Base styles */
body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--gray-900);
    background-color: var(--gray-100);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Navigation Bar */
.navbar {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
    border: none;
    padding: 0.75rem 0;
    transition: all var(--transition-base);
    position: relative;
    z-index: 1030;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color) !important;
    letter-spacing: -0.5px;
    transition: transform var(--transition-fast);
}

.navbar-brand:hover {
    transform: translateX(5px);
}

.navbar-nav .nav-link {
    color: var(--gray-700) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    padding: 0.5rem 1rem !important;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    position: relative;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-color) !important;
    background-color: var(--primary-color);
    background-color: rgba(91, 71, 224, 0.08);
}

.navbar-nav .nav-link.active {
    color: var(--primary-color) !important;
    font-weight: 600;
}

/* Dropdown Menu */
.navbar .dropdown-menu {
    border: none;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    border-radius: var(--radius-md);
    padding: 0.5rem;
    margin-top: 0.25rem;
    min-width: 200px;
}

.navbar .dropdown-item {
    border-radius: var(--radius-sm);
    padding: 0.5rem 1rem;
    color: var(--gray-700);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.navbar .dropdown-item:hover,
.navbar .dropdown-item:focus {
    background-color: rgba(91, 71, 224, 0.08);
    color: var(--primary-color);
}

/* Modern Buttons */
.btn {
    padding: 0.625rem 1.5rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(91, 71, 224, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(91, 71, 224, 0.4);
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-300);
    transform: translateY(-1px);
}

.btn-outline-primary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(91, 71, 224, 0.3);
}

/* Cards */
.card {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    background: white;
    transition: all var(--transition-base);
    overflow: hidden;
    position: relative;
    z-index: 1;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    z-index: 2;
}

.card-header {
    background: var(--gray-100);
    border-bottom: 1px solid var(--gray-200);
    font-weight: 600;
    padding: 1.25rem;
}

.card-body {
    padding: 1.5rem;
}

/* Modern Jumbotron */
.jumbotron {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-radius: var(--radius-xl);
    padding: 3rem !important;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.jumbotron::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: rotate(0deg) translate(0, 0); }
    50% { transform: rotate(180deg) translate(50px, 50px); }
}

.jumbotron h1 {
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
}

.jumbotron .lead {
    font-size: 1.25rem;
    opacity: 0.9;
    font-weight: 400;
}

/* Forms */
.form-control, .form-select {
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(91, 71, 224, 0.15);
    outline: none;
}

.form-label {
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

/* Tables */
.table {
    background: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table thead th {
    background: var(--gray-100);
    border-bottom: 2px solid var(--gray-200);
    font-weight: 600;
    color: var(--gray-700);
    padding: 1rem;
}

.table tbody tr {
    transition: all var(--transition-fast);
}

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

/* Badges */
.badge {
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.875rem;
}

.badge.bg-primary {
    background: var(--primary-color) !important;
}

/* Footer */
footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 2rem 0;
    margin-top: 4rem;
}

footer a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

footer a:hover {
    color: white;
}

/* Animations */
.fade-in {
    animation: fadeIn 0.5s ease-out;
}

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

/* Responsive adjustments */
@media (max-width: 768px) {
    .navbar-nav .nav-link {
        margin: 0.25rem 0;
    }
    
    .jumbotron {
        padding: 2rem !important;
    }
    
    .card {
        margin-bottom: 1rem;
    }
}

/* Loading spinner */
.spinner-border {
    color: var(--primary-color);
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* Alerts */
.alert {
    border: none;
    border-radius: var(--radius-md);
    padding: 1rem 1.5rem;
}

.alert-success {
    background: rgba(81, 207, 102, 0.1);
    color: #2F8B3F;
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background: rgba(255, 107, 107, 0.1);
    color: #D32F2F;
    border-left: 4px solid var(--danger-color);
}

.alert-info {
    background: rgba(78, 205, 196, 0.1);
    color: #0288D1;
    border-left: 4px solid var(--info-color);
}

/* Progress bars */
.progress {
    height: 8px;
    border-radius: var(--radius-lg);
    background: var(--gray-200);
}

.progress-bar {
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
}