/* Custom CSS for NGHI Website */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* Root Variables */
:root {
    --primary-color: #8b5cf6;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --dark-color: #212529;
    --light-color: #f8f9fa;
    --white-color: #ffffff;
    --gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #a855f7 100%);
    --gradient-secondary: linear-gradient(135deg, #a855f7 0%, #7c3aed 100%);
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    --border-radius: 0.375rem;
    --border-radius-lg: 0.5rem;
    --transition: all 0.3s ease;
}

/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

.display-4 {
    font-weight: 700;
}

.lead {
    font-weight: 400;
}

/* Navigation */
.navbar {
    background: rgba(139, 92, 246, 0.95);
    backdrop-filter: blur(10px);
    transition: var(--transition);
    padding: 1rem 0;
}

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

.navbar-nav .nav-link {
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.navbar-nav .nav-link:hover {
    color: var(--white-color) !important;
}

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

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

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-section .text-primary {
    color: #8b5cf6 !important;
}

/* Video Background */
.video-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
}

.video-background video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 2;
}

.hero-section .container {
    position: relative;
    z-index: 3;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="%238b5cf6" opacity="0.05"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.5;
}

.hero-section .container {
    position: relative;
    z-index: 2;
}

.hero-image {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* Cards */
.card {
    border: none;
    transition: var(--transition);
    border-radius: var(--border-radius-lg);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg) !important;
}

.card-body {
    padding: 2rem;
}

/* Buttons */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white-color);
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.btn-primary:hover {
    background: #7c3aed;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Icons */
.fa-2x, .fa-3x, .fa-10x {
    transition: var(--transition);
}

.card:hover .fa-2x,
.card:hover .fa-3x {
    transform: scale(1.1);
}

/* Sections */
section {
    padding: 5rem 0;
}

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

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Scroll Animations */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition);
}

.scroll-animate.animate {
    opacity: 1;
    transform: translateY(0);
}

/* Social Links */
.social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    border-radius: 50%;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-color);
    color: var(--white-color) !important;
    transform: translateY(-3px);
}

/* Carousel Styling */
.carousel {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.carousel-item {
    height: 500px;
    overflow: hidden;
}

.carousel-item img {
    object-fit: cover;
    height: 100%;
    width: 100%;
}

.carousel-caption {
    background: rgba(0, 0, 0, 0.6);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    bottom: 2rem;
    left: 2rem;
    right: 2rem;
    text-align: left;
}

.carousel-caption h3 {
    color: var(--white-color);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.carousel-caption p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    margin-bottom: 0;
}

.carousel-indicators {
    bottom: 1rem;
}

.carousel-indicators button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    border: 2px solid rgba(255, 255, 255, 0.8);
    margin: 0 4px;
    transition: var(--transition);
}

.carousel-indicators button.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.carousel-control-prev,
.carousel-control-next {
    width: 50px;
    height: 50px;
    background-color: rgba(139, 92, 246, 0.8);
    border-radius: 50%;
    top: 50%;
    transform: translateY(-50%);
    margin: 0 1rem;
}

.carousel-control-prev {
    left: 1rem;
}

.carousel-control-next {
    right: 1rem;
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
    width: 24px;
    height: 24px;
}

/* Carousel Animation */
.carousel-item {
    transition: transform 0.6s ease-in-out;
}

.carousel-fade .carousel-item {
    opacity: 0;
    transition: opacity 0.6s ease-in-out;
}

.carousel-fade .carousel-item.active {
    opacity: 1;
}

/* Team Photos */
.team-photo-container {
    display: inline-block;
    position: relative;
    overflow: hidden;
    border-radius: 50%;
    width: 150px;
    height: 150px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.team-photo-container:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.team-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    transition: var(--transition);
}

.team-photo-container:hover .team-photo {
    transform: scale(1.1);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        text-align: center;
    }
    
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .display-5 {
        font-size: 2rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
    
    section {
        padding: 3rem 0;
    }
    
    /* Mobile Carousel Adjustments */
    .carousel-item {
        height: 300px;
    }
    
    .carousel-caption {
        bottom: 1rem;
        left: 1rem;
        right: 1rem;
        padding: 1rem;
    }
    
    .carousel-caption h3 {
        font-size: 1.2rem;
    }
    
    .carousel-caption p {
        font-size: 0.9rem;
    }
    
    .carousel-control-prev,
    .carousel-control-next {
        width: 40px;
        height: 40px;
        margin: 0 0.5rem;
    }
    
    .carousel-control-prev {
        left: 0.5rem;
    }
    
    .carousel-control-next {
        right: 0.5rem;
    }
    
    /* Mobile Team Photo Adjustments */
    .team-photo-container {
        width: 120px;
        height: 120px;
    }
    
    /* Mobile Video Background Adjustments */
    .video-background video {
        object-position: center;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .hero-section .lead {
        font-size: 1rem;
    }
}

@media (max-width: 576px) {
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .display-5 {
        font-size: 1.75rem;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .d-flex.gap-3 {
        flex-direction: column;
    }
}

/* Loading Animation */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loading.hidden {
    opacity: 0;
    pointer-events: none;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid var(--white-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

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

/* Print Styles */
@media print {
    .navbar,
    .btn,
    .social-links {
        display: none !important;
    }
    
    .hero-section {
        background: none !important;
        color: black !important;
    }
    
    .card {
        border: 1px solid #ddd !important;
        box-shadow: none !important;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #0000ff;
        --secondary-color: #000000;
        --success-color: #008000;
        --warning-color: #ff8c00;
        --danger-color: #ff0000;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .hero-image {
        animation: none;
    }
    
    .scroll-animate {
        opacity: 1;
        transform: none;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --dark-color: #ffffff;
        --light-color: #2d3748;
        --white-color: #1a202c;
    }
    
    body {
        background-color: var(--white-color);
        color: var(--dark-color);
    }
    
    .bg-light {
        background-color: var(--light-color) !important;
    }
    
    .card {
        background-color: var(--light-color);
        color: var(--dark-color);
    }
}