/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    text-align: center;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 16px;
}

.btn-primary {
    background: linear-gradient(135deg, #1E40AF 0%, #3B82F6 100%);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1E3A8A 0%, #2563EB 100%);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(30, 64, 175, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid #1E40AF;
}

.btn-secondary:hover {
    background: #1E40AF;
    color: white;
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    color: #1E40AF;
}

.logo svg {
    color: #F59E0B;
}

.nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #4B5563;
    font-weight: 600;
    transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: #1E40AF;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: #1E40AF;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, #2e5fff 0%, #535861 50%, #003373 100%);
    color: white;
    overflow: hidden;
}

.hero-background {
    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 1000 1000"><defs><radialGradient id="c" cx="50%" cy="50%" r="50%"><stop offset="0%" stop-color="%23ffffff" stop-opacity="0.1"/><stop offset="100%" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="200" cy="200" r="100" fill="url(%23c)"/><circle cx="800" cy="300" r="150" fill="url(%23c)"/><circle cx="600" cy="700" r="120" fill="url(%23c)"/></svg>') no-repeat center center;
    background-size: cover;
    opacity: 0.3;
}

.hero-content {
    padding-top:3em ;
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.title-main {
    display: block;
    background: linear-gradient(45deg, #ffffff, #F59E0B);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-sub {
    display: block;
    font-size: 0.6em;
    font-weight: 400;
    margin-top: 0.5rem;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-details {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.detail-item svg {
    color: #F59E0B;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, #1E40AF 0%, #3B82F6 100%);
    color: white;
    padding: 8rem 0 4rem;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.25rem;
    opacity: 0.9;
}

/* Invitation Section */
.invitation {
    padding: 6rem 0;
    background: #F8FAFC;
}

.invitation-wrapper {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.invitation-header {
    margin-bottom: 3rem;
}

.invitation-header h2 {
    font-size: 2.5rem;
    color: #1E40AF;
    margin-bottom: 1rem;
}

.invitation-decoration {
    width: 100px;
    height: 4px;
    background: linear-gradient(135deg, #F59E0B, #FBBF24);
    margin: 0 auto;
    border-radius: 2px;
}

.invitation-content {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: left;
}

.invitation-greeting {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1E40AF;
    margin-bottom: 1.5rem;
}

.invitation-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: #374151;
}

.invitation-closing {
    font-style: italic;
    color: #6B7280;
}

.invitation-signature {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px solid #E5E7EB;
    text-align: right;
}

.invitation-signature p {
    margin-bottom: 0.5rem;
    color: #1E40AF;
}

/* Countdown Section */
.countdown-section {
    background: linear-gradient(135deg, #F59E0B 0%, #FBBF24 100%);
    color: white;
    padding: 4rem 0;
}

.countdown-wrapper {
    text-align: center;
}

.countdown-title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: white;
}

.countdown-timer {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.countdown-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 16px;
    min-width: 120px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.countdown-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.countdown-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Important Dates Section */
.important-dates {
    padding: 6rem 0;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    color: #1E40AF;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.25rem;
    color: #6B7280;
    max-width: 600px;
    margin: 0 auto;
}

.dates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.date-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #E5E7EB;
}

.date-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.date-card.featured {
    background: linear-gradient(135deg, #1E40AF 0%, #3B82F6 100%);
    color: white;
    transform: scale(1.05);
}

.date-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #F59E0B, #FBBF24);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
}

.date-card.featured .date-icon {
    background: rgba(255, 255, 255, 0.2);
}

.date-card h3 {
    font-size: 1.5rem;
    color: #1E40AF;
    margin-bottom: 1rem;
}

.date-card.featured h3 {
    color: white;
}

.date-info {
    margin: 1.5rem 0;
}

.date {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: #F59E0B;
    margin-bottom: 0.5rem;
}

.date-card.featured .date {
    color: #FBBF24;
}

.time {
    font-size: 1rem;
    opacity: 0.8;
}

.date-card p {
    color: #6B7280;
    line-height: 1.6;
}

.date-card.featured p {
    color: rgba(255, 255, 255, 0.9);
}

/* Sponsors Section */
.sponsors {
    padding: 6rem 0;
    background: #F8FAFC;
}

.sponsors-category {
    margin-bottom: 4rem;
}

.sponsors-category-title {
    font-size: 1.5rem;
    color: #1E40AF;
    text-align: center;
    margin-bottom: 2rem;
}

.sponsors-grid {
    display: grid;
    gap: 2rem;
    justify-items: center;
}

.sponsors-grid.organizers {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ... diğer grid sınıflarınız ... */

/* DEĞİŞİKLİK BURADA BAŞLIYOR */
.sponsor-logo {
    background: white;
    padding: 1.5rem; /* Padding biraz azaltıldı */
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid #E5E7EB;
    
    /* Logoyu kutu içinde ortalamak için Flexbox eklendi */
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%; /* Kutu, grid alanını tamamen doldursun */
    height: 150px; /* Kutulara sabit bir yükseklik vererek hizalamayı garantiler */
}

.sponsor-logo:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.sponsor-logo img {
    max-width: 100%; /* Resim, kutunun genişliğini aşamaz */
    max-height: 100%; /* Resim, kutunun yüksekliğini aşamaz */
    height: auto; /* En-boy oranını korumak için */
    object-fit: contain; /* En önemlisi: Resmin tamamını kutuya sığdırır, bozmaz */
    
    /* Eski ve gereksiz özellikler kaldırıldı */
    /* --width, border-radius, margin-bottom kaldırıldı */
}
/* DEĞİŞİKLİK BURADA BİTİYOR */

/* Bu kurala artık ihtiyaç yok, resmin altındaki metin kaldırıldığı için silebilirsiniz */
.sponsor-logo span {
    display: block;
    font-weight: 500;
    color: #374151;
    font-size: 0.9rem;
}
/* Committees Section */
.committees {
    padding: 6rem 0;
    background: white;
}

.committees-list {
    padding: 6rem 0;
    background: white;
}

.committee-section {
    margin-bottom: 4rem;
}

.committee-title {
    font-size: 2rem;
    color: #1E40AF;
    margin-bottom: 2rem;
    text-align: center;
}

.committee-list {
    max-width: 800px;
    margin: 0 auto;
}

.committee-member-item {
    text-align: center;
    background: white;
    padding: 1.5rem 2rem;
    margin-bottom: 1rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #E5E7EB;
    transition: all 0.3s ease;
}

.committee-member-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
    border-color: #1E40AF;
}

.committee-member-item h3 {
    color: #1E40AF;
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
}

.committee-member-item p {
    color: #6B7280;
    margin: 0;
    font-weight: 500;
}

.committee-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.committee-member {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #E5E7EB;
}

.committee-member:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.member-image {
    height: 250px;
    overflow: hidden;
}

.member-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.member-info {
    padding: 2rem;
}

.member-info h3 {
    font-size: 1.5rem;
    color: #1E40AF;
    margin-bottom: 0.5rem;
}

.member-title {
    color: #F59E0B;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.member-university {
    color: #6B7280;
    margin-bottom: 0.5rem;
}

.member-specialty {
    color: #374151;
    font-style: italic;
}

/* Topics Section */
.topics-list {
    padding: 6rem 0;
    background: white;
}

.topics-content {
    max-width: 900px;
    margin: 0 auto;
}

.topics-main-title {
    font-size: 2.5rem;
    color: #1E40AF;
    text-align: center;
    margin-bottom: 3rem;
    font-weight: 700;
}

.topic-section {
    background: white;
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #E5E7EB;
    transition: all 0.3s ease;
}

.topic-section:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
    border-color: #1E40AF;
}

.topic-section h3 {
    font-size: 1.4rem;
    color: #1E40AF;
    margin-bottom: 1.5rem;
    font-weight: 600;
    border-bottom: 2px solid #F59E0B;
    padding-bottom: 0.5rem;
}

.topic-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.topic-section ul li {
    color: #374151;
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
    font-size: 1rem;
}

.topic-section ul li::before {
    content: '▪';
    color: #F59E0B;
    font-weight: bold;
    position: absolute;
    left: 0;
    font-size: 1.2rem;
}

/* Program Section */
.program-content {
    padding: 6rem 0;
    background: white;
}

.day-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 3rem;
    gap: 1rem;
}

.day-tab {
    padding: 12px 24px;
    background: #F3F4F6;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #6B7280;
}

.day-tab.active {
    background: #1E40AF;
    color: white;
}

.day-program {
    display: none;
}

.day-program.active {
    display: block;
}

.program-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.program-timeline::before {
    content: '';
    position: absolute;
    left: 100px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, #1E40AF, #3B82F6);
}

.timeline-item {
    display: flex;
    margin-bottom: 2rem;
    position: relative;
}

.timeline-time {
    width: 80px;
    text-align: center;
    font-weight: 600;
    color: #1E40AF;
    font-size: 1.1rem;
    position: relative;
    z-index: 2;
}

.timeline-time::after {
    content: '';
    position: absolute;
    right: -22px;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background: #1E40AF;
    border-radius: 50%;
    border: 3px solid white;
    box-shadow: 0 0 0 3px #1E40AF;
}

.timeline-content {
    flex: 1;
    margin-left: 3rem;
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    position: relative;
    border: 1px solid #E5E7EB;
}

.timeline-content::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 20px;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 10px 10px 10px 0;
    border-color: transparent white transparent transparent;
}

.timeline-content h3 {
    color: #1E40AF;
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: #6B7280;
    margin: 0;
}

.session-details {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: #9CA3AF;
}

.panelists {
    margin-top: 0.5rem;
}

.panelists span {
    display: block;
    font-size: 0.875rem;
    color: #6B7280;
    margin-bottom: 0.25rem;
}

.timeline-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-top: 0.5rem;
}

.timeline-badge.registration {
    background: #DBEAFE;
    color: #1E40AF;
}

.timeline-badge.keynote {
    background: #FEF3C7;
    color: #D97706;
}

.timeline-badge.panel {
    background: #D1FAE5;
    color: #059669;
}

.timeline-badge.break {
    background: #F3E8FF;
    color: #7C3AED;
}

.timeline-badge.workshop {
    background: #FEE2E2;
    color: #DC2626;
}

.timeline-badge.presentation {
    background: #E0E7FF;
    color: #3730A3;
}

.timeline-badge.closing {
    background: #F9FAFB;
    color: #374151;
}

/* Registration Section */
.registration-page {
    padding: 6rem 0;
    background: #F8FAFC;
}

.registration-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.registration-info h2 {
    font-size: 2rem;
    color: #1E40AF;
    margin-bottom: 1rem;
}

.registration-info p {
    color: #6B7280;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.pricing-info {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.pricing-info h3 {
    color: #1E40AF;
    margin-bottom: 1rem;
}

.price-list {
    space-y: 1rem;
}

.price-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: #F8FAFC;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.price-category {
    font-weight: 500;
    color: #374151;
}

.price-amount {
    font-weight: 700;
    color: #F59E0B;
    font-size: 1.25rem;
}

.registration-benefits {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.registration-benefits h3 {
    color: #1E40AF;
    margin-bottom: 1rem;
}

.registration-benefits ul {
    list-style: none;
    padding: 0;
}

.registration-benefits ul li {
    color: #374151;
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.early-bird {
    background: linear-gradient(135deg, #F59E0B, #FBBF24);
    color: white;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
}

.early-bird h3 {
    color: white;
    margin-bottom: 1rem;
}

.early-bird p {
    margin: 0;
    opacity: 0.9;
}

.registration-form-container {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.registration-form h3 {
    color: #1E40AF;
    margin-bottom: 2rem;
    text-align: center;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #374151;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #E5E7EB;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1E40AF;
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    line-height: 1.4;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid #E5E7EB;
    border-radius: 4px;
    position: relative;
    flex-shrink: 0;
    margin-top: 2px;
}

.terms-link {
    color: #1E40AF;
    text-decoration: underline;
}

/* Contact Section */
.contact-page {
    padding: 6rem 0;
    background: white;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info-section h2 {
    font-size: 2rem;
    color: #1E40AF;
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #1E40AF, #3B82F6);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.contact-details h3 {
    color: #1E40AF;
    margin-bottom: 0.5rem;
}

.contact-details p {
    color: #6B7280;
    margin: 0;
    line-height: 1.6;
}

.social-media {
    margin-top: 2rem;
}

.social-media h3 {
    color: #1E40AF;
    margin-bottom: 1rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 8px 16px;
    background: rgba(30, 64, 175, 0.1);
    border: 1px solid #1E40AF;
    border-radius: 8px;
    color: #1E40AF;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.social-link:hover {
    background: #1E40AF;
    color: white;
}

.contact-form-section {
    background: #F8FAFC;
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid #E5E7EB;
}

.contact-form h3 {
    color: #1E40AF;
    margin-bottom: 1rem;
}

.contact-form p {
    color: #6B7280;
    margin-bottom: 2rem;
}

.map-section {
    margin-top: 4rem;
}

.map-section h2 {
    font-size: 2rem;
    color: #1E40AF;
    margin-bottom: 2rem;
    text-align: center;
}

.map-container {
    background: #F8FAFC;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid #E5E7EB;
}

.map-placeholder {
    padding: 4rem;
    text-align: center;
    color: #6B7280;
}

.map-placeholder svg {
    color: #1E40AF;
    margin-bottom: 1rem;
}

.map-placeholder h3 {
    color: #1E40AF;
    margin-bottom: 0.5rem;
}

.map-placeholder p {
    margin-bottom: 1.5rem;
}

.faq-section {
    margin-top: 4rem;
}

.faq-section h2 {
    font-size: 2rem;
    color: #1E40AF;
    margin-bottom: 2rem;
    text-align: center;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.faq-item {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #E5E7EB;
}

.faq-item h4 {
    color: #1E40AF;
    margin-bottom: 1rem;
}

.faq-item p {
    color: #6B7280;
    margin: 0;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: #1F2937;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-logo svg {
    color: #F59E0B;
}

.footer-section h4 {
    color: #F59E0B;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #D1D5DB;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #F59E0B;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 1rem;
    text-align: center;
    color: #9CA3AF;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav {
        position: fixed;
        top: 0; /* Menünün başlangıç pozisyonu ekranın en üstü olsun */
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 2rem;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        transition: transform 0.3s ease; /* 'top' yerine 'transform' ile daha akıcı animasyon */
        z-index: 999;

        /* Menüyü başlangıçta tamamen gizle */
        transform: translateY(-100%); /* Menüyü yukarı doğru ekranın dışına taşı */
        /* Veya basitçe: display: none; */
        /* Veya: visibility: hidden; opacity: 0; */
    }

    .nav.active {
        /* Menü aktif olduğunda ekrana getir */
        transform: translateY(0); /* Menüyü orijinal pozisyonuna geri getir */
        /* Eğer display: none; kullandıysanız: display: flex; (veya block) */
        /* Eğer visibility/opacity kullandıysanız: visibility: visible; opacity: 1; */
    }

/* 1. ADIM: Mevcut .menu-toggle kuralınızı bu şekilde güncelleyin */
.menu-toggle {
    display: flex; /* Zaten vardı, kalmalı */
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 25px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1000; /* Menüden üstte kalması için önemli */
}

/* 2. ADIM: Bu yeni kuralı da .menu-toggle'un altına, yine media bloğu içine ekleyin */
.menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background: #333; /* Hamburger çizgilerinin rengi */
    border-radius: 2px;
    transition: all 0.3s ease-in-out; /* JavaScript'in yapacağı değişikliği animasyonlu hale getirir */
}
    
  
   
    .hero-details {
        flex-direction: column;
        gap: 1rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .registration-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .countdown-timer {
        gap: 1rem;
    }

    .countdown-item {
        min-width: 100px;
        padding: 1.5rem;
    }

    .countdown-number {
        font-size: 2.5rem;
    }

    .program-timeline::before {
        left: 40px;
    }

    .timeline-time {
        width: 60px;
    }

    .timeline-time::after {
        right: -12px;
    }

    .timeline-content {
        margin-left: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .page-header h1 {
        font-size: 2.5rem;
    }

    .dates-grid {
        grid-template-columns: 1fr;
    }

    .topics-grid {
        grid-template-columns: 1fr;
    }

    .committee-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .registration-form-container,
    .contact-form-section,
    .invitation-content {
        padding: 1.5rem;
    }

    .countdown-item {
        min-width: 80px;
        padding: 1rem;
    }

    .countdown-number {
        font-size: 2rem;
    }

    .sponsors-grid.organizers,
    .sponsors-grid.main-sponsors,
    .sponsors-grid.supporters {
        grid-template-columns: 1fr;
    }
}

/* 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 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

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

/* Success message styles */
.success-message {
    background: #10B981;
    color: white;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    text-align: center;
    font-weight: 500;
}

.error-message {
    background: #EF4444;
    color: white;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    text-align: center;
    font-weight: 500;
}