@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;700&display=swap');

:root {
    --primary-color: #0f2c59; /* Corporate Navy */
    --secondary-color: #dac0a3; /* Soft Beige/Gold Accent */
    --accent-color: #eadbc8; /* Lighter Beige */
    --text-color: #333333;
    --bg-light: #f8f9fa;
    --transition-speed: 0.3s;
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    color: var(--text-color);
    background-color: #ffffff;
    padding-top: 80px;
    overflow-x: hidden;
}

/* Navbar Customization */
.navbar {
    background-color: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
    transition: all var(--transition-speed) ease;
}

.navbar-brand {
    font-weight: 700;
    color: var(--primary-color) !important;
    font-size: 1.5rem;
}

.nav-link {
    color: #555 !important;
    font-weight: 500;
    position: relative;
    transition: color var(--transition-speed);
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color) !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--primary-color);
    transition: all var(--transition-speed);
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 100%;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1a3c70 100%);
    color: white;
    padding: 100px 0;
    position: relative;
    overflow: hidden;
    margin-bottom: 3rem;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://source.unsplash.com/random/1920x1080/?office,business') no-repeat center center;
    background-size: cover;
    opacity: 0.1;
}

.hero-content {
    position: relative;
    z-index: 1;
}

/* Cards & Content */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.card-header {
    background-color: white;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    font-weight: 600;
    color: var(--primary-color);
}

/* Buttons */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    padding: 0.6rem 1.5rem;
    border-radius: 6px;
    font-weight: 500;
    transition: all var(--transition-speed);
}

.btn-primary:hover {
    background-color: #0a1f40;
    border-color: #0a1f40;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(15, 44, 89, 0.3);
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 0 30px;
    margin-top: 80px;
}

.footer h5 {
    color: white;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color var(--transition-speed);
}

.footer a:hover {
    color: white;
}

/* Animations */
.animate-fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
    opacity: 0;
    transform: translateY(20px);
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Table Styling */
.table {
    border-collapse: separate;
    border-spacing: 0;
}
.table thead th {
    background-color: #f1f3f5;
    border-bottom: 2px solid #dee2e6;
    color: var(--primary-color);
    font-weight: 600;
}
.table-hover tbody tr:hover {
    background-color: rgba(15, 44, 89, 0.03);
}

/* Mobile Optimization */
@media (max-width: 768px) {
    .hero-section {
        padding: 60px 0;
        text-align: center;
    }
    .navbar-brand {
        font-size: 1.2rem;
    }
}