/* ========================================
   BAYBURT ÇALIŞTAYI - KURUMSAL TASARIM
   ======================================== */

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

:root {
    --primary-color: #4fd1d9;
    --primary-blue: #2a4173;
    --secondary-blue: #4fd1d9;
    --accent-red: #c41e3a;
    --dark-gray: #333333;
    --medium-gray: #666666;
    --light-gray: #f5f5f5;
    --white: #ffffff;
    --border-color: #dddddd;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--dark-gray);
    line-height: 1.6;
    background: var(--white);
}

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

/* Header */
.site-header {
    background: #ffffff;
    color: var(--dark-gray);
    padding: 20px 0;
    border-bottom: 1px solid #e5e7eb;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 40px;
}

.logo-section img {
    max-height: 88px;
    width: auto;
}

.logo-placeholder {
    width: 80px;
    height: 80px;
    background: #f5f5f5;
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: var(--primary-color);
    font-size: 0.75rem;
    text-align: center;
    padding: 5px;
}

.site-title h1 {
    font-size: 1.75rem;
    margin-bottom: 6px;
    font-weight: 700;
    color: #1f2937;
    letter-spacing: -0.3px;
    line-height: 1.3;
}

.site-title p {
    font-size: 0.875rem;
    color: #6b7280;
    font-weight: 400;
}

.header-info {
    text-align: right;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.header-info p {
    margin: 0;
    font-size: 0.875rem;
    color: #6b7280;
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-info strong {
    color: #1f2937;
    font-weight: 600;
}

.home-header-top {
    flex-direction: column;
    justify-content: center;
    gap: 12px;
}

.home-logo-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 28px;
    flex-wrap: wrap;
    width: 100%;
}

.home-logo-row img {
    height: 95px;
    width: auto;
    object-fit: contain;
}

.logo-section img[src$="valilik.png"],
.logo-section img[src$="valilik.webp"],
.home-logo-row img[src$="valilik.png"],
.home-logo-row img[src$="valilik.webp"] {
    transform: scale(1.08);
    transform-origin: center;
}

.home-site-title {
    text-align: center;
    margin: 0;
}

.home-header-info {
    text-align: center;
    align-items: center;
}

.home-title-meta-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 36px;
    width: 100%;
    flex-wrap: wrap;
}

/* Navigation */
/* Navigation */
.main-nav {
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    z-index: 100;
    overflow: visible;
}

.nav-container {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border-color);
    background: var(--white);
    border-radius: 8px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 0;
    -webkit-appearance: none;
    appearance: none;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--primary-blue);
    border-radius: 999px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    justify-content: center;
    width: 100%;
    padding: 0;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    display: block;
    padding: 18px 25px;
    text-decoration: none;
    color: var(--dark-gray);
    font-weight: 500;
    transition: all 0.3s;
    border-bottom: 3px solid transparent;
}

.nav-menu a:hover,
.nav-menu a.active {
    background: var(--light-gray);
    color: var(--primary-blue);
    border-bottom-color: var(--accent-red);
}

/* Hero Banner */
.hero-banner {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: var(--white);
    padding: 60px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-banner::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 1440 320"><path fill="rgba(255,255,255,0.05)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,154.7C960,171,1056,181,1152,165.3C1248,149,1344,107,1392,85.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
}

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

.hero-banner h2 {
    font-size: 2rem;
    margin-bottom: 18px;
    font-weight: 700;
    letter-spacing: -0.3px;
    line-height: 1.3;
}

.hero-banner p {
    font-size: 1.125rem;
    margin-bottom: 35px;
    opacity: 0.95;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.hero-meta {
    display: flex;
    justify-content: center;
    gap: 50px;
    margin-top: 35px;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0;
    font-size: 1rem;
    opacity: 0.95;
}

.meta-item strong {
    font-weight: 600;
}

.meta-item i {
    font-size: 1.5rem;
}

/* Breadcrumb */
.breadcrumb {
    background: var(--light-gray);
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb ul {
    list-style: none;
    display: flex;
    gap: 10px;
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--secondary-blue);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    color: var(--medium-gray);
}

/* Main Content */
.main-content {
    padding: 0;
    min-height: 500px;
    background: #ffffff;
}

.content-wrapper {
    display: block;
}

.primary-content {
    background: #ffffff;
}

/* Session Cards - Modern Minimal */
.session-card-link {
    text-decoration: none;
    color: inherit;
}

.session-card {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 30px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.session-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 8px 24px rgba(79,209,217,0.16);
    transform: translateY(-4px);
}

.session-number {
    font-size: 3rem;
    font-weight: 700;
    color: #f3f4f6;
    margin-bottom: 15px;
    line-height: 1;
}

.session-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1f2937;
    line-height: 1.4;
    margin: 0;
}

.session-card:hover h3 {
    color: var(--primary-color);
}

.sidebar {
    display: none;
}

/* Page Header */
.page-header {
    margin-bottom: 50px;
    padding-bottom: 0;
    border-bottom: none;
    text-align: center;
}

.page-header h1 {
    color: #1f2937;
    font-size: 2.5rem;
    margin-bottom: 12px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.page-header p {
    color: #6b7280;
    font-size: 1.125rem;
    font-weight: 400;
}

/* Cards & Sections */
.info-card {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 35px;
    margin-bottom: 30px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.info-card h2 {
    color: #1f2937;
    font-size: 1.5rem;
    margin-bottom: 20px;
    padding-bottom: 0;
    border-bottom: none;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.info-card h3 {
    color: #1f2937;
    font-size: 1.25rem;
    margin: 25px 0 15px 0;
    font-weight: 700;
}

.info-card ul {
    margin-left: 20px;
    margin-bottom: 15px;
}

.info-card li {
    margin: 8px 0;
    line-height: 1.8;
}

/* Session Grid */
.session-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin: 40px 0;
}

/* Session Cards - Modern Minimal */
.session-card-link {
    text-decoration: none;
    color: inherit;
}

.session-card {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 30px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.session-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 8px 24px rgba(79,209,217,0.16);
    transform: translateY(-4px);
}

.session-number {
    font-size: 3rem;
    font-weight: 700;
    color: #f3f4f6;
    margin-bottom: 15px;
    line-height: 1;
}

.session-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1f2937;
    line-height: 1.4;
    margin: 0;
}

.session-card:hover h3 {
    color: var(--primary-color);
}

/* Timeline */
.timeline {
    margin: 40px 0;
}

.timeline-item {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
}

.timeline-date {
    flex-shrink: 0;
    width: 120px;
    text-align: center;
}

.date-box {
    background: var(--primary-color);
    color: #ffffff;
    padding: 15px;
    border-radius: 8px;
}

.date-day {
    font-size: 2rem;
    font-weight: bold;
    display: block;
}

.date-month {
    font-size: 0.9rem;
    opacity: 0.9;
}

.timeline-content h3 {
    color: var(--dark-gray);
    margin-bottom: 10px;
}

.timeline-content p {
    color: var(--medium-gray);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    background: var(--primary-blue);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background: var(--primary-color);
    color: var(--primary-blue);
    box-shadow: 0 4px 12px rgba(79,209,217,0.25);
    transform: translateY(-1px);
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--dark-gray);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 3px;
    font-family: inherit;
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-blue);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

/* Footer */
.site-footer {
    background: #4fd1d9;
    color: #111111;
    padding: 40px 0 20px;
    margin-top: 60px;
    border-top: 4px solid #2a4173;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section h4 {
    color: #111111;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.footer-section p {
    color: rgba(17,17,17,0.82);
}

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

.footer-section li {
    margin: 8px 0;
}

.footer-section a {
    color: #111111 !important;
    text-decoration: none;
    transition: all 0.3s;
}

.footer-section a:hover {
    color: #2a4173 !important;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(17,17,17,0.18);
    color: rgba(17,17,17,0.72);
}

/* Responsive */
@media (max-width: 968px) {
    .header-top {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }

    .logo-section {
        flex-direction: column;
    }

    .header-info {
        text-align: center;
    }

    .nav-container {
        display: flex;
        align-items: center;
        justify-content: flex-end;
        min-height: 60px;
        width: 100%;
        position: relative;
    }

    .nav-toggle {
        display: inline-flex;
        position: relative;
        z-index: 130;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        width: 100%;
        background: var(--white);
        border-top: 1px solid var(--border-color);
        box-shadow: 0 8px 20px rgba(0,0,0,0.08);
        z-index: 120;
        grid-template-columns: 1fr;
    }

    .main-nav.is-open .nav-menu {
        display: grid;
    }

    .main-nav:focus-within .nav-menu {
        display: grid;
    }

    .main-nav.is-open .nav-toggle span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .main-nav.is-open .nav-toggle span:nth-child(2) {
        opacity: 0;
    }

    .main-nav.is-open .nav-toggle span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .nav-menu li {
        border-bottom: 1px solid var(--border-color);
        border-right: none;
    }

    .nav-menu a {
        padding: 14px 16px;
        text-align: left;
        font-size: 1rem;
        border-bottom: none;
    }

    .main-nav.is-open .nav-menu li:last-child {
        border-bottom: none;
    }

    .content-wrapper {
        grid-template-columns: 1fr;
    }

    .hero-banner h2 {
        font-size: 1.8rem;
    }

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

    .session-poster {
        height: 220px;
    }

    .timeline-item {
        flex-direction: column;
    }
}

@media (max-width: 600px) {
    .site-title h1 {
        font-size: 1.55rem;
    }

    .page-header h1 {
        font-size: 1.6rem;
    }

    .hero-meta {
        flex-direction: column;
        gap: 15px;
    }
}

/* Session Item Cards (Oturumlar Page) */
.session-item {
    background: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}

.session-item:hover {
    box-shadow: 0 8px 24px rgba(79,209,217,0.16);
    transform: translateY(-4px);
}

.session-poster {
    width: 100%;
    height: 280px;
    background-size: cover;
    background-position: center;
    background-color: #f3f4f6;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    position: relative;
}

.session-poster::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.3) 100%);
}

.session-poster-icon {
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.session-header {
    padding: 25px;
    flex: 1;
}

.session-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1f2937;
    margin: 0 0 15px 0;
    line-height: 1.4;
}

.session-body {
    padding: 0 25px 25px 25px;
}

.session-body p {
    color: #6b7280;
    line-height: 1.7;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.session-link {
    display: inline-block;
    background: var(--primary-color);
    color: #ffffff;
    padding: 12px 28px;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s;
}

.session-link:hover {
    background: var(--primary-blue);
    box-shadow: 0 4px 12px rgba(42,65,115,0.3);
    transform: translateX(4px);
}

/* Session Color Variants */
.session-item.color-green .session-poster { 
    background: linear-gradient(135deg, #10b981 0%, #059669 100%); 
}
.session-item.color-blue .session-poster { 
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%); 
}
.session-item.color-purple .session-poster { 
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%); 
}
.session-item.color-orange .session-poster { 
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%); 
}
.session-item.color-pink .session-poster { 
    background: linear-gradient(135deg, #ec4899 0%, #db2777 100%); 
}
.session-item.color-teal .session-poster { 
    background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%); 
}

/* ========================================
   EVENT POSTER SECTION
   ======================================== */

/* ========================================
   EVENT POSTER AND PURPOSE SECTION
   ======================================== */

.event-info-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.info-wrapper {
    display: flex;
    align-items: center;
    gap: 60px;
    max-width: 1000px;
    margin: 0 auto;
}

.poster-side {
    flex: 0 0 320px;
}

.poster-container {
    width: 320px;
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.poster-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 50px rgba(0,0,0,0.25);
}

.event-poster-img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.poster-container:hover .event-poster-img {
    transform: scale(1.02);
}

.poster-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
    color: white;
    padding: 20px;
    text-align: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.poster-container:hover .poster-overlay {
    opacity: 1;
}

.poster-overlay span {
    font-size: 1rem;
    font-weight: 600;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.purpose-side {
    flex: 1;
    padding: 20px;
}

.purpose-title {
    font-size: 2rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 20px;
}

.purpose-text {
    font-size: 1.125rem;
    color: #6b7280;
    line-height: 1.8;
}

/* Responsive Design for Info Section */
@media (max-width: 768px) {
    .info-wrapper {
        flex-direction: column;
        gap: 40px;
    }
    
    .poster-side {
        flex: 0 0 auto;
    }
    
    .poster-container {
        max-width: 320px;
        margin: 0 auto;
    }
    
    .purpose-side {
        text-align: center;
    }
    
    .poster-overlay {
        opacity: 1;
        background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0) 100%);
    }
    
    .purpose-title {
        font-size: 1.75rem;
    }
    
    .purpose-text {
        font-size: 1rem;
    }
}

/* Old Event Poster Section - Keep for backward compatibility */
.event-poster-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.event-poster-section .poster-container {
    max-width: 80px;
    margin: 0 auto;
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}