:root {
    --primary: #122144; 
    --primary-light: #1c3366;
    
    --accent: #f05423; 
    --accent-dark: #c13e16;
    
    --secondary: #3b82f6; 
    --secondary-dark: #1e40af;
    
    --neon-blue: #7dd3fc; 
    
    --text-main: #333333;
    --text-muted: #cbd5e1;
    
    --surface: #ffffff;
    --surface-alt: #f1f5f9;
    
    --shadow-soft: 0 10px 30px -10px rgba(18, 33, 68, 0.3);
    --shadow-glow: 0 0 20px rgba(240, 84, 35, 0.4);
    
    --container: 1100px;
}
* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

html { scroll-behavior: smooth; }
body {
	font-family: 'Manrope', sans-serif;
	color: var(--primary);
	background-color: var(--surface);
	line-height: 1.6;
	overflow-x: hidden;
	padding-bottom: var(--nav-height-mobile);
}
a { text-decoration: none !important; transition: color 0.3s ease; }
@media (min-width: 769px) { body { padding-bottom: 0; } }
.container {
	max-width: var(--container);
	margin: 0 auto;
	padding: 0 1.5rem;
	width: 100%;
}
.desktop-nav {
	position: fixed; top: 0; left: 0; width: 100%; height: var(--nav-height-desktop);
	background: rgba(15, 23, 42, 0.98);
	z-index: 100; display: none; border-bottom: 1px solid rgba(255,255,255,0.1);
}
.desktop-nav .container { 
	height: 100%; 
	display: flex; 
	align-items: center;
	justify-content: space-between; 
}

.nav-logo { display: flex; align-items: center; gap: 0.5rem; font-weight: 800; font-size: 1.2rem; color: white; }

.nav-links { 
	display: flex; 
	gap: 2rem; 
	align-items: center;
	height: 100%;
}
.nav-links a:not(.btn) { 
	color: #cbd5e1; font-weight: 600; font-size: 0.95rem; 
	display: flex; align-items: center; height: 100%;
}
.nav-links a:not(.btn):hover { color: var(--accent); }

.mobile-dock {
	position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
	width: 92%; max-width: 400px; height: 70px;
	background: #0F172A; 
	border-radius: 40px;
	display: flex; align-items: center; justify-content: space-between;
	padding: 0 25px; z-index: 1000;
	box-shadow: 0 10px 30px rgba(0,0,0,0.4);
	border: 1px solid rgba(255,255,255,0.1);
}

.dock-item {
	display: flex; flex-direction: column; align-items: center; justify-content: center;
	color: #64748B; font-size: 0.7rem; gap: 4px;
	transition: all 0.3s;
}
.dock-item i { font-size: 1.5rem; }
.dock-item.active, .dock-item:hover { color: var(--accent); }

.dock-fab {
	position: relative; top: -25px;
	width: 60px; height: 60px;
	background: var(--accent);
	border-radius: 50%;
	display: flex; align-items: center; justify-content: center;
	color: white; font-size: 1.5rem;
	box-shadow: 0 0 0 8px var(--surface), 0 10px 20px rgba(14, 165, 233, 0.4); 
}

@media (min-width: 769px) {
	.desktop-nav { display: block; }
	.mobile-dock { display: none; }
}

.hero-section {
	position: relative; min-height: 100vh;
	/**background: radial-gradient(circle at center, #0a3d62 0%, #05192d 100%);**/
	display: flex; align-items: center; overflow: hidden;
	padding-top: var(--nav-height-desktop);
}

.hero-mobile-logo {
	position: absolute; top: 20px; left: 20px; z-index: 10;
	display: flex; align-items: center; gap: 0.5rem; font-weight: 800; font-size: 1.2rem;
}
@media (min-width: 769px) { .hero-mobile-logo { display: none; } }

.hero-bg {
	position: absolute; top: 0; left: 0; width: 100%; height: 100%;
	background-image: url('intro-bg.jpg');
	background-size: cover; background-position: center; opacity: 0.9; z-index: 1;
}
@media (max-width:480px) {
	.hero-bg{ background-image: url('intro-bg-mobil.jpg'); }
	.hero-mobile-logo span { color:#fff; }
}

#particles-js { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 2; pointer-events: none; }

.hero-content { position: absolute; z-index: 3; max-width: 800px;text-align: center; bottom:15%;transform:translate(-50%,-50%);left:50%;}

.tag {
    display: inline-block; 
    background: rgba(0, 242, 255, 0.1); 
    color: var(--secondary);
    padding: 0.5rem 1rem; 
    border-radius: 50px; 
    font-size: 0.9rem; 
    font-weight: 700;
    margin-bottom: 1.5rem; 
    border: 1px solid rgba(0, 242, 255, 0.3);
    text-align: center;
}
.section-padding .tag {
    background: rgba(0, 138, 148, 0.1);
    color: var(--secondary);
    border: 1px solid rgba(0, 138, 148, 0.2);
}

.hero-title {
    background: linear-gradient(to right, #ffffff, var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc { font-size: clamp(1rem, 2vw, 1.25rem); color: #cbd5e1; max-width: 600px; text-align:center; margin:0 auto 2.5rem auto }

.logo{ width:100%; height:auto; max-width:70px; }

.section-padding { padding: 5rem 0; }

.section-title {
	font-size: clamp(1.8rem, 4vw, 2.5rem); color: var(--primary); margin-bottom: 1.5rem;
	font-weight: 700; display: flex; align-items: center;justify-content: center;
}

.info-centered {
	text-align: center;
	max-width: 800px;
	margin: 0 auto;
}
.info-centered .section-title {
	justify-content: center;
}
.info-text {
    color: var(--text-main); /* Turkuaz yerine koyu ton */
    font-size: 1.1rem;
    line-height: 1.8;
}

.bg-alt { background-color: var(--surface-alt); }

.timeline { position: relative; max-width: 900px; margin: 3rem auto 0; }

.timeline::after {
	content: ''; position: absolute; width: 2px; background: #cbd5e1;
	top: 0; bottom: 0; left: 50%; margin-left: -1px;
}

.timeline-item {
	padding: 10px 40px; position: relative; background-color: inherit;
	width: 50%; box-sizing: border-box;
}
.timeline-item.left { left: 0; text-align: right; }
.timeline-item.right { left: 50%; text-align: left; }

.timeline-item::after {
	content: ''; position: absolute; width: 16px; height: 16px;
	right: -8px; background-color: var(--surface); border: 4px solid var(--accent);
	top: 24px; border-radius: 50%; z-index: 1;
}
.timeline-item.right::after { left: -8px; }

.agenda-card {
	padding: 1.5rem; background-color: white; border-radius: var(--radius-md);
	box-shadow: var(--shadow-soft); transition: transform 0.3s ease; position: relative;
}
.agenda-card:hover { transform: translateY(-3px); }
.agenda-card h3 {
    color: var(--primary);
    font-weight: 800;
}

.time-badge {
    display: inline-block; 
    background: var(--accent); 
    color: white;
    padding: 0.25rem 0.8rem; 
    border-radius: 4px; 
    font-size: 0.85rem; 
    font-weight: 700; 
    margin-bottom: 0.5rem;
}

.speaker-info { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid #f1f5f9; }
.speaker-name { font-weight: 700; font-size: 0.95rem; color: var(--primary); }
.speaker-inst { 
    font-size: 0.9rem; 
    color: var(--text-muted); /* Konuşmacı alt başlıkları daha net */
    font-weight: 500;
}
.speaker-info i, .platform-card i {
    color: var(--secondary);
}

.platform-grid {
	display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	gap: 2rem; margin-top: 3rem;
}
.platform-card {
	border: 1px solid #e2e8f0; padding: 2rem; border-radius: var(--radius-md);
	text-align: center; transition: all 0.3s ease; background: white;
}
.platform-card:hover { 
    border-color: var(--secondary); 
    box-shadow: 0 10px 30px rgba(0, 242, 255, 0.2); 
}

.icon-circle {
    width: 60px; 
    height: 60px; 
    background: rgba(0, 242, 255, 0.1); 
    border-radius: 50%;
    display: flex; 
    align-items: center; 
    justify-content: center; 
    margin: 0 auto 1.5rem;
    color: var(--accent); /* İkon pembe, daire turkuaz gölgeli */
    font-size: 1.5rem;
}

.modal-backdrop {
	position: fixed; top: 0; left: 0; width: 100%; height: 100%;
	background: rgba(15, 23, 42, 0.95); 
	z-index: 9999; display: flex; align-items: center; justify-content: center;
	opacity: 0; visibility: hidden; transition: opacity 0.2s ease;
	will-change: opacity;
}
.modal-backdrop.active { opacity: 1; visibility: visible; }

.modal-content {
	background: #F9FAFB; width: 95%; max-width: 600px; border-radius: 16px;
	padding: 20px; position: relative; max-height: 90vh; overflow-y: auto;
	transform: scale(0.95); transition: transform 0.2s ease;
}
.modal-backdrop.active .modal-content { transform: scale(1); }

.close-modal {
	position: absolute; top: 15px; right: 15px; background: none; border: none;
	font-size: 1.5rem; cursor: pointer; color: #666;
}

.accordion-header {
	width: 100%; display: flex; align-items: center; justify-content: space-between;
	padding: 1.2rem; text-align: left; font-weight: 600; color: #1f2937;
	background: white; border: 1px solid #f3f4f6; border-radius: 0.75rem;
	cursor: pointer; margin-bottom: 0.5rem;
}
.accordion-content {
	max-height: 0; overflow: hidden; transition: max-height 0.3s ease-in-out;
	background: white; border-radius: 0 0 0.75rem 0.75rem;
}
.accordion-content.open { padding-bottom: 1rem; }
.acc-list { list-style: disc; padding-left: 20px; margin-top: 10px; color: #4b5563; }
.acc-list li { margin-bottom: 8px; font-size: 0.95rem; }

footer {
	background: #020617; color: #94a3b8; padding: 4rem 0 2rem;
	font-size: 0.9rem; text-align: center;
}

.footer-container {
	display: flex; flex-direction: column; align-items: center; gap: 2rem;
	border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 2rem; margin-bottom: 1.5rem;
}

.footer-title { font-size: 2rem; font-weight: 800; color: white; letter-spacing: -1px; }

.footer-socials { display: flex; gap: 1.5rem; }
.footer-socials a {
	width: 45px; height: 45px; border-radius: 50%; background: rgba(255,255,255,0.05);
	display: flex; align-items: center; justify-content: center; color: #94a3b8;
	font-size: 1.2rem; transition: all 0.3s;
}
.footer-socials a:hover { background: var(--accent); color: white; transform: translateY(-3px); }

.footer-kvkk {
	font-size: 0.85rem; color: #64748B; text-decoration: underline; cursor: pointer;
}
.footer-kvkk:hover { color: white; }

.btn {
	display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
	padding: 1rem 2rem; border-radius: var(--radius-md); font-weight: 700;
	transition: all 0.3s ease; cursor: pointer; font-size: 1rem; border: none;
}
.btn-primary { 
    background: var(--accent); 
    color: white; 
    box-shadow: var(--shadow-glow); 
}
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); }

.btn-outline { background: rgba(255,255,255,0.7); border: 1px solid rgba(255,255,255,0.2); color: #333; }
.btn-outline:hover { background: var(--accent-dark); color:#fff; transform: translateY(-2px); }

.btn-whatsapp { background: var(--whatsapp); color: white; width: 100%; margin-top: 1rem; }
.btn-whatsapp:hover { background: #1ebc57; }

@media (max-width: 768px) {
	.hero-title { font-size: 2.5rem; }
	
	.timeline::after { left: 30px; }
	.timeline-item { width: 100%; padding-left: 70px; padding-right: 25px; }
	.timeline-item::after { left: 22px !important; }
	.timeline-item.left, .timeline-item.right { left: 0; text-align: left; }
	
	.modal-content { width: 95%; margin: 10px; padding: 15px; }
}

/* --- PROGRAM TABLOSU STİLLERİ --- */

.program-wrapper {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-soft);
    overflow: hidden; /* Köşeler için */
    overflow-x: auto; /* Mobil için yatay kaydırma */
    border: 1px solid #e2e8f0;
}

.program-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px; /* Mobilde sıkışmaması için min genişlik */
    text-align: left;
}

.program-table th {
    background: var(--primary);
    color: white;
    padding: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.program-table td {
    padding: 1rem;
    border-bottom: 1px solid #f1f5f9;
    vertical-align: middle;
    color: var(--text-main);
    font-size: 0.95rem;
}

.program-table tr:last-child td {
    border-bottom: none;
}

/* Saat Hücresi */
.time-cell {
    font-weight: 700;
    color: var(--secondary);
    white-space: nowrap;
    font-family: monospace; /* Saatler hizalı dursun diye */
    font-size: 0.9rem;
}

/* Konuşmacı Hücresi */
.speaker-cell {
    font-weight: 600;
    color: var(--primary);
}

/* Oturum Başlık Satırı */
.session-header {
    background-color: #f8fafc; /* Açık gri/mavi */
}
.session-header td {
    border-bottom: 2px solid #e2e8f0;
}
.session-title {
    font-weight: 800;
    color: var(--primary);
    font-size: 1.1rem;
    margin-bottom: 4px;
}
.session-chairs {
    font-size: 0.85rem;
    color: var(--text-muted);
}
.session-chairs i {
    color: var(--accent);
}

/* Kahve Arası Satırı */
.break-row {
    background-color: #fff1f2; /* Çok açık pembe */
}
.break-row td {
    color: var(--accent-dark);
    font-weight: 600;
    font-style: italic;
}

/* Vurgulu Satırlar (Açılış/Kapanış) */
.row-highlight {
    background-color: rgba(0, 138, 148, 0.05);
}

/* Hover Efekti */
.program-table tbody tr:hover {
    background-color: rgba(0,0,0,0.01);
}

/* Mobilde tabloyu responsive yapmak için */
@media (max-width: 768px) {
    .program-table th, .program-table td {
        padding: 0.75rem;
    }
    .session-title { font-size: 1rem; }
    .program-wrapper {
        margin: 0 -10px; /* Mobilde kenarlara biraz daha yaklaşsın */
        width: calc(100% + 20px);
        border-radius: 0;
        border-left: none;
        border-right: none;
    }
}