:root {
    --primary: #122144;
    --primary-light: #1c3366;

    --accent: #dc2626;
    --accent-dark: #b91c1c;

    --secondary: #3b82f6;
    --secondary-dark: #1e40af;

    --neon-blue: #7dd3fc;
    --whatsapp: #25d366;

    --text-main: #333333;
    --text-muted: #64748b;

    --surface: #ffffff;
    --surface-alt: #f1f5f9;

    --shadow-soft: 0 10px 30px -10px rgba(18, 33, 68, 0.3);
    --shadow-glow: 0 0 20px rgba(220, 38, 38, 0.4);

    --container: 1100px;
    --radius-md: 12px;
    --nav-height-desktop: 64px;
    --nav-height-mobile: 110px;
    --topbar-height-mobile: 48px;
}
* { 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(10, 23, 48, 0.95);
	z-index: 100; display: none; border-bottom: 1px solid rgba(255,255,255,0.08);
}
.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) {
	position: relative;
	color: #cbd5e1; font-weight: 600; font-size: 0.95rem;
	display: flex; align-items: center; height: 100%;
}
.nav-links a:not(.btn)::after {
	content: '';
	position: absolute; left: 0; right: 0; bottom: 0;
	height: 2px; background: var(--accent);
	transform: scaleX(0); transition: transform 0.25s ease;
}
.nav-links a:not(.btn):hover,
.nav-links a:not(.btn).active { color: var(--accent); }
.nav-links a:not(.btn):hover::after,
.nav-links a:not(.btn).active::after { transform: scaleX(1); }

.nav-links .btn-primary { padding: 0.5rem 1.5rem; font-size: 0.95rem; }

.mobile-dock {
	position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
	width: 92%; max-width: 400px; height: 70px;
	background: #4a4c52;
	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);
}

.mobile-topbar {
	position: fixed; top: 0; left: 0; width: 100%; height: var(--topbar-height-mobile);
	background: rgba(10, 23, 48, 0.95);
	z-index: 100; display: flex; align-items: center;
	padding: 0 1.25rem; gap: 0.6rem;
	border-bottom: 1px solid rgba(255,255,255,0.08);
}
.mobile-topbar .logo { max-width: 26px; }
.mobile-topbar span { color: #fff; font-weight: 800; font-size: 0.95rem; }

.mobile-menu-toggle {
	margin-left: auto; background: none; border: none; color: #fff;
	font-size: 1.6rem; line-height: 1; cursor: pointer; padding: 0.25rem;
	display: flex; align-items: center;
}

.mobile-menu {
	position: fixed; top: var(--topbar-height-mobile); left: 0; width: 100%;
	background: rgba(10, 23, 48, 0.97);
	display: flex; flex-direction: column;
	max-height: 0; overflow: hidden; transition: max-height 0.3s ease;
	z-index: 99;
}
.mobile-menu a {
	padding: 1rem 1.25rem; color: #fff; font-weight: 600;
	border-top: 1px solid rgba(255,255,255,0.08);
}
.mobile-menu a.btn { margin: 1rem 1.25rem; }

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

.hero-section {
	position: relative; min-height: 100vh;
	background:
		radial-gradient(circle at 15% 20%, rgba(59, 130, 246, 0.35), transparent 55%),
		radial-gradient(circle at 85% 78%, rgba(220, 38, 38, 0.28), transparent 50%),
		linear-gradient(160deg, #0a1730 0%, #122144 55%, #1c3366 100%);
	display: flex; align-items: center; justify-content: center; overflow: hidden;
	padding: calc(var(--topbar-height-mobile) + 3rem) 0 3rem;
}
@media (min-width: 769px) {
	.hero-section { padding: calc(var(--nav-height-desktop) + 3rem) 0 3rem; }
}

.hero-decor { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.hero-blob { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.6; }
.hero-blob-1 {
	width: 420px; height: 420px; background: var(--secondary);
	top: -120px; left: -100px; animation: heroFloat1 11s ease-in-out infinite;
}
.hero-blob-2 {
	width: 380px; height: 380px; background: var(--accent);
	bottom: -140px; right: -100px; animation: heroFloat2 13s ease-in-out infinite;
}
.hero-grid {
	position: absolute; inset: 0;
	background-image:
		linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
		linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
	background-size: 42px 42px;
	-webkit-mask-image: radial-gradient(circle at center, black, transparent 75%);
	mask-image: radial-gradient(circle at center, black, transparent 75%);
}
@keyframes heroFloat1 { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(30px, 40px); } }
@keyframes heroFloat2 { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(-30px, -30px); } }

.hero-content { position: relative; z-index: 3; width: 100%; max-width: min(1400px, 94vw); text-align: center; padding: 0 1.25rem; }

.online-badge {
	display: inline-flex; align-items: center; gap: 0.6rem;
	background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.25);
	color: #fff; padding: 0.55rem 1.2rem; border-radius: 50px;
	font-size: 0.9rem; font-weight: 700; letter-spacing: 0.2px;
	-webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
}
.pulse-dot {
	width: 9px; height: 9px; border-radius: 50%; background: #22c55e; flex: none;
	animation: pulseDot 1.8s infinite;
}
@keyframes pulseDot {
	0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.6); }
	70% { box-shadow: 0 0 0 10px rgba(34, 197, 94, 0); }
	100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.hero-banner-wrap {
	position: relative;
	background: linear-gradient(135deg, var(--secondary) 0%, var(--primary-light) 50%, var(--accent) 100%);
	border-radius: 22px;
	padding: 6px;
	box-shadow: 0 25px 60px -15px rgba(0,0,0,0.55), 0 0 50px rgba(59,130,246,0.3);
	width: 100%; margin: 0 auto;
	display: flex; flex-direction: column; align-items: center; gap: 1rem;
}
.hero-banner-wrap .hero-badge { margin: 0.75rem 0 0; }
.hero-banner-inner {
	background: #fff;
	border-radius: 16px;
	overflow: hidden;
	width: 100%;
}
.hero-bg {
	width: 100%; aspect-ratio: 21 / 9;
	background-image: url('intro-bg.jpg');
	background-size: contain; background-position: center; background-repeat: no-repeat;
}
.hero-cta {
	position: absolute; bottom: 1rem; left: 50%; transform: translateX(-50%); z-index: 4;
	display: flex; gap: 0.75rem; flex-wrap: wrap; justify-content: center; align-items: center;
	width: 100%; padding: 0 1rem;
}

@media (min-width: 769px) {
	.hero-banner-wrap .hero-badge {
		position: absolute; top: 1.5rem; left: 50%; transform: translateX(-50%); z-index: 4; margin: 0;
		background: rgba(18, 33, 68, 0.92); border-color: rgba(255,255,255,0.15);
	}
	.hero-cta {
		bottom: 1.75rem; gap: 1rem; padding: 0;
	}
}

@media (max-width:480px) {
	.hero-banner-wrap { border-radius: 18px; padding: 5px; }
	.hero-banner-inner { border-radius: 13px; }
	.hero-bg{
		background-image: url('intro-bg-mobil.jpg');
		aspect-ratio: 480 / 950;
		background-size: contain; background-position: center;
	}
	.hero-cta { bottom: 0.75rem; gap: 0.6rem; }
	.hero-cta .btn { padding: 0.75rem 1.25rem; font-size: 0.9rem; }
}

.tag {
    display: inline-block;
    background: rgba(59, 130, 246, 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(59, 130, 246, 0.3);
    text-align: center;
}
.section-padding .tag {
    background: rgba(59, 130, 246, 0.1);
    color: var(--secondary);
    border: 1px solid rgba(59, 130, 246, 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:38px; }

.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;
}

.invite-card {
    max-width: 800px;
    margin: 0 auto;
    background: var(--surface);
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    padding: clamp(1.5rem, 4vw, 3rem);
    text-align: left;
}
.invite-card .info-text { margin-bottom: 1.25rem; text-align: justify; }
.invite-card .info-text:last-of-type { margin-bottom: 0; }

.invite-signature {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--surface-alt);
}
.invite-signature p { margin-bottom: 0.35rem; }
.invite-signature .signature-name {
    font-weight: 700;
    color: var(--primary);
    margin-top: 0.5rem;
}
.invite-signature .signature-title {
    color: var(--text-muted);
    font-size: 0.95rem;
}

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

.committee-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    color: var(--text-main);
    font-size: 1.05rem;
    font-weight: 600;
}

.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(59, 130, 246, 0.15);
}

#guide .platform-grid {
	grid-template-columns: repeat(3, 1fr);
	gap: 1rem;
}
#guide .platform-card {
	padding: 1.5rem 1rem;
}

@media (max-width: 640px) {
	#guide .platform-grid { grid-template-columns: 1fr; gap: 1.25rem; }
	#guide .platform-card { padding: 1.5rem 1rem; }
}

.icon-circle {
    width: 60px;
    height: 60px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: var(--secondary);
    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(18, 33, 68, 0.55); border: 2px solid rgba(255,255,255,0.7); color: #fff; }
.btn-outline:hover { background: #fff; border-color: #fff; color: var(--primary); 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;
    }
}