/* Custom CSS for Prevent Senior Symposium */

/* Font Family */
* {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

/* Custom Colors */
:root {
    --primary-blue: #1e3a8a;
    --secondary-blue: #3b82f6;
    --light-blue: #dbeafe;
    --accent-green: #059669;
    --accent-purple: #7c3aed;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f8fafc;
}

/* Navigation Enhancements */
nav {
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.nav-link {
    position: relative;
    transition: all 0.3s ease;
}

.nav-link:hover {
    transform: translateY(-2px);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--secondary-blue), var(--accent-green));
    transition: width 0.3s ease;
}

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

/* Hero Section Animations */
.hero-content {
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Card Hover Effects */
.card-hover {
    transition: all 0.3s ease;
    cursor: pointer;
}

.card-hover:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Timeline Styles */
.timeline-item {
    position: relative;
    padding-left: 2rem;
    border-left: 2px solid #e5e7eb;
    margin-bottom: 2rem;
    transition: all 0.3s ease;
}

.timeline-item:hover {
    border-left-color: var(--secondary-blue);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--secondary-blue);
    transition: all 0.3s ease;
}

.timeline-item:hover::before {
    transform: scale(1.3);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
}

/* Button Enhancements */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    border: none;
    color: white;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
    color: white;
}

.btn-secondary {
    background: white;
    border: 2px solid var(--secondary-blue);
    color: var(--secondary-blue);
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--secondary-blue);
    color: white;
    transform: translateY(-2px);
}

/* Section Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Speaker Cards */
.speaker-card {
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.speaker-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.speaker-card:hover::before {
    left: 100%;
}

.speaker-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

/* Program Schedule */
.schedule-time {
    background: linear-gradient(135deg, var(--accent-green), #34d399);
    color: white;
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
    min-width: 120px;
    box-shadow: 0 2px 8px rgba(5, 150, 105, 0.3);
}

.schedule-content {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid var(--secondary-blue);
    transition: all 0.3s ease;
    margin-bottom: 1rem;
}

.schedule-content:hover {
    transform: translateX(8px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

/* Moderator Badge */
.moderator-badge {
    background: linear-gradient(135deg, var(--accent-purple), #a855f7);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* Committee Cards */
.committee-card {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #f3f4f6;
}

.committee-card:hover {
    border-color: var(--secondary-blue);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}

/* Responsive Design Enhancements */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
        line-height: 1.2;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .schedule-time {
        font-size: 0.8rem;
        padding: 6px 12px;
        min-width: 90px;
    }
    
    .timeline-item {
        padding-left: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

/* Loading Animation */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

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

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--secondary-blue), var(--primary-blue));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--primary-blue), var(--secondary-blue));
}

/* Accessibility Improvements */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus States */
.focus\:outline-blue:focus {
    outline: 2px solid var(--secondary-blue);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .no-print {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .bg-gradient-to-br {
        background: var(--primary-blue) !important;
        color: white !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .nav-link::after {
        height: 3px;
    }
    
    .timeline-item::before {
        width: 12px;
        height: 12px;
    }
    
    .btn-primary,
    .btn-secondary {
        border-width: 2px;
    }
}