/* Global Styles */
:root {
    --primary-color: #4ecdc4;
    --secondary-color: #292f8d;
    --accent-color: #d4af37;
    --dark-blue: #1a1a4e;
    --light-blue: #a7e4e6;
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --dark-gray: #343a40;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--dark-gray);
    overflow-x: hidden;
}

/* Utility Classes */
.section-padding {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.section-divider {
    height: 4px;
    width: 70px;
    background: var(--primary-color);
    margin: 0 auto 30px;
}

/* Navbar Styles */
.navbar {
    background-color: rgba(26, 26, 78, 0.9);
    padding: 15px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 10px 0;
    background-color: rgba(26, 26, 78, 0.95);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.navbar-brand img {
    transition: var(--transition);
}

.navbar-dark .navbar-nav .nav-link {
    color: var(--white);
    font-weight: 500;
    padding: 8px 15px;
    transition: var(--transition);
}

.navbar-dark .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link:focus {
    color: var(--primary-color);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--secondary-color) 100%);
	background: url('./hero-bg.jpg');
	background-repeat: no-repeat;
	background-size:cover;
	background-position:top center;
    color: var(--white);
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('wave-pattern.png');
    background-size: cover;
    opacity: 0.2;
    z-index: 1;
    pointer-events: none; /* Bu satırı ekleyin */
}

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

.symposium-title {
    margin-bottom: 30px;
}

.symposium-title .number {
    font-size: 5rem;
    font-weight: 700;
    color: var(--accent-color);
    display: inline-block;
    margin-right: 10px;
}

.symposium-title h1 {
    font-size: 4.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
    line-height: 1;
}

.symposium-title h2 {
    font-family: 'Dancing Script', cursive;
    font-size: 3.5rem;
    color: var(--white);
    margin: 0;
}

.date-badge {
    background-color: rgba(255, 255, 255, 0.1);
    display: inline-block;
    padding: 10px 20px;
    border-radius: 30px;
    font-size: 1.2rem;
    margin-top: 20px;
}

.online-badge {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--dark-blue);
    padding: 5px 15px;
    border-radius: 20px;
    font-weight: 600;
    margin-left: 10px;
}

.hero-image {
    position: relative;
    z-index: 2;
    animation: float 6s ease-in-out infinite;
}

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

.wave-bg {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background-image: url('wave.svg');
    background-size: cover;
}

/* Button Styles */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--dark-blue);
    font-weight: 600;
    padding: 10px 25px;
    border-radius: 30px;
    transition: var(--transition);
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--dark-blue);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* Invitation Card */
.invitation-card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    padding: 20px;
}

.invitation-card .lead {
    font-weight: 600;
    color: var(--secondary-color);
}

/* Committee Cards */
.committee-card {
    background-color: var(--white);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    height: 100%;
    margin-bottom: 30px;
}

.committee-card h3 {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--light-blue);
}

.committee-list {
    list-style: none;
    padding-left: 0;
}

.committee-list li {
    padding: 8px 0;
    border-bottom: 1px dashed rgba(0, 0, 0, 0.1);
}

.committee-list li:last-child {
    border-bottom: none;
}

/* Timeline */
.timeline {
    position: relative;
    padding: 20px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 3px;
    background-color: var(--primary-color);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    top: 0;
    width: 20px;
    height: 20px;
    background-color: var(--primary-color);
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.timeline-content {
    position: relative;
    width: 45%;
    padding: 20px;
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: auto;
}

.timeline-item:nth-child(odd) .timeline-content::before {
    content: '';
    position: absolute;
    top: 10px;
    left: -10px;
    width: 20px;
    height: 20px;
    background-color: var(--white);
    transform: rotate(45deg);
}

.timeline-item:nth-child(even) .timeline-content::before {
    content: '';
    position: absolute;
    top: 10px;
    right: -10px;
    width: 20px;
    height: 20px;
    background-color: var(--white);
    transform: rotate(45deg);
}

.timeline-content h3 {
    color: var(--secondary-color);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.timeline-content p {
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 0;
}

/* Registration Section */
.table-pricing {
    background-color: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.table-pricing thead {
    background-color: var(--secondary-color);
    color: var(--white);
}

.table-pricing th, 
.table-pricing td {
    padding: 15px;
    text-align: center;
    vertical-align: middle;
}

.table-pricing tbody tr:nth-child(odd) {
    background-color: rgba(0, 0, 0, 0.02);
}

.registration-notes {
    background-color: var(--white);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.registration-notes h4 {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 15px;
}

.registration-notes ul {
    padding-left: 20px;
}

.registration-notes li {
    margin-bottom: 8px;
}

.registration-card {
    border: none;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.registration-card .card-title {
    color: var(--secondary-color);
    font-weight: 600;
}

.form-control, .form-select {
    padding: 12px 15px;
    border-radius: 8px;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.form-control:focus, .form-select:focus {
    box-shadow: 0 0 0 3px rgba(78, 205, 196, 0.2);
    border-color: var(--primary-color);
}

/* Contact Section */
.contact-info {
    background-color: var(--white);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    height: 100%;
}

.contact-info h3 {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--light-blue);
}

.contact-list {
    list-style: none;
    padding-left: 0;
}

.contact-list li {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.contact-list li i {
    width: 40px;
    height: 40px;
    background-color: var(--light-blue);
    color: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
}

.contact-form-card {
    background-color: var(--white);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    height: 100%;
}

.contact-form-card h3 {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--light-blue);
}

/* Footer */
.footer {
    background-color: var(--dark-blue);
    color: var(--white);
    padding: 50px 0 20px;
    text-align: center;
}

.social-icons {
    margin: 20px 0;
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-radius: 50%;
    margin: 0 5px;
    transition: var(--transition);
}

.social-icon:hover {
    background-color: var(--primary-color);
    color: var(--dark-blue);
    transform: translateY(-3px);
}

.copyright {
    margin-top: 20px;
    font-size: 0.9rem;
    opacity: 0.7;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--dark-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.back-to-top.active {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--accent-color);
    transform: translateY(-3px);
}

/* Responsive Styles */
@media (max-width: 991.98px) {
    .section-padding {
        padding: 70px 0;
    }
    
    .hero-section {
        height: auto;
        padding: 120px 0 80px;
    }
    
    .symposium-title .number {
        font-size: 4rem;
    }
    
    .symposium-title h1 {
        font-size: 3.5rem;
    }
    
    .symposium-title h2 {
        font-size: 2.8rem;
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-dot {
        left: 30px;
    }
    
    .timeline-content {
        width: calc(100% - 60px);
        margin-left: 60px !important;
    }
    
    .timeline-item:nth-child(odd) .timeline-content::before,
    .timeline-item:nth-child(even) .timeline-content::before {
        left: -10px;
        right: auto;
    }
}

@media (max-width: 767.98px) {
    .section-padding {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .symposium-title .number {
        font-size: 3rem;
    }
    
    .symposium-title h1 {
        font-size: 2.8rem;
    }
    
    .symposium-title h2 {
        font-size: 2.2rem;
    }
    
    .date-badge {
        font-size: 1rem;
    }
}