/* --- Değişkenler ve Temel Ayarlar (Aydınlık / Tech Tema) --- */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --accent-primary: #2563eb; /* Derin Teknoloji Mavisi */
    --accent-secondary: #0284c7; /* Turkuaz/Mavi */
    --accent-glow: rgba(37, 99, 235, 0.15);
    
    --glass-bg: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(148, 163, 184, 0.25);
    --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.05);

    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    /* Bilişim hissi veren arka planlar: AI çizimi ve teknolojik nokta deseni */
    background-image: url('bg.png'), radial-gradient(rgba(148, 163, 184, 0.2) 1px, transparent 1px);
    background-position: center;
    background-size: cover, 24px 24px;
    background-attachment: fixed, scroll;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* --- Arka plan şekilleri (Aesthetic Vibe) --- */
.bg-shape {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
    pointer-events: none;
    opacity: 0.8;
}

.shape-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(2, 132, 199, 0.15), transparent 70%);
    top: -200px;
    left: -200px;
    animation: drift 20s infinite alternate;
}

.shape-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.12), transparent 70%);
    bottom: -100px;
    right: -100px;
    animation: drift 15s infinite alternate-reverse;
}

@keyframes drift {
    0% { transform: translate(0, 0); }
    100% { transform: translate(100px, 50px); }
}

/* --- Tipografi --- */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    line-height: 1.2;
    color: #0f172a;
}

.highlight {
    background: linear-gradient(to right, #2563eb, #0284c7);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}

.text-glow {
    text-shadow: 0 0 15px rgba(37, 99, 235, 0.3);
    color: var(--accent-primary);
    font-weight: 600;
}

/* --- Layout --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

.bg-darker {
    background-color: var(--bg-secondary);
    /* Deseni burada da hissettirelim */
    background-image: radial-gradient(rgba(148, 163, 184, 0.15) 1px, transparent 1px);
    background-size: 24px 24px;
}

.bg-highlight {
    background: linear-gradient(135deg, rgba(37,99,235,0.03), rgba(2,132,199,0.05));
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.align-center { align-items: center; }
.text-center { text-align: center; }

.mb-4 { margin-bottom: 1rem; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 3rem; }

/* --- Navigasyon --- */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 100;
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}
.logo span {
    font-weight: 600;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--accent-primary);
}

/* --- Butonlar --- */
.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
    transform: translateY(-2px);
    color: white;
}

.btn-outline {
    background: white;
    color: var(--accent-primary);
    border: 2px solid var(--accent-primary);
}

.btn-outline:hover {
    background: var(--bg-secondary);
    transform: translateY(-2px);
}

/* --- Hero Section --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px; 
}

.hero-content {
    max-width: 650px;
    text-align: center;
    margin: 0 auto;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: 30px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--accent-primary);
}

.hero-title {
    font-size: 4rem;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    /* justify-content is removed because it's managed via inline or parent if needed */
}

/* --- Glassmorphism Paneller ve Kartlar --- */
.glass-panel, .glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 32px;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-soft);
}

.glass-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-glow:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(37, 99, 235, 0.1);
    border-color: rgba(37, 99, 235, 0.3);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.glass-card h3 {
    margin-bottom: 12px;
    font-size: 1.25rem;
}

.glass-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* --- Özelleştirilmiş Alanlar --- */
.section-title {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.section-desc {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.1rem;
}

.flex-center {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.icon-large {
    font-size: 5rem;
    height: 300px;
    background: linear-gradient(135deg, rgba(37,99,235,0.05), rgba(37,99,235,0.01));
}

.icon-label {
    font-size: 1.2rem;
    font-weight: 600;
    margin-top: 16px;
    font-family: var(--font-heading);
    color: var(--text-primary);
}

.neon-border {
    border: 1px solid rgba(37, 99, 235, 0.3);
    box-shadow: 0 0 20px rgba(37, 99, 235, 0.1);
}

.neon-border-xl {
    border: 1px solid rgba(37, 99, 235, 0.4);
    box-shadow: 0 10px 40px rgba(37, 99, 235, 0.15);
    position: relative;
    overflow: hidden;
}

.neon-border-xl::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
}

/* --- Vizyon Listesi (Özel İstek Alanı) --- */
.vision-box {
    max-width: 800px;
    margin: 0 auto;
    background: #ffffff;
    padding: 40px;
    border-radius: 16px;
    text-align: left;
}
.vision-box p {
    font-size: 1.3rem;
    font-family: var(--font-heading);
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--accent-primary);
}
.vision-list {
    list-style: none;
}
.vision-list li {
    font-size: 1.15rem;
    margin-bottom: 16px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}
.vision-list li .icon {
    font-size: 1.4rem;
}

/* --- Okunabilirlik Sınıfları --- */
.article-text {
    max-width: 75ch;
    line-height: 1.8;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.clean-quote {
    border-left: 4px solid var(--accent-primary);
    font-style: italic;
    color: var(--text-primary);
    font-size: 1.25rem;
    margin: 20px 0;
    background: linear-gradient(90deg, rgba(37,99,235,0.05), transparent);
    padding: 20px 20px 20px 30px;
    border-radius: 0 8px 8px 0;
}

/* --- Timeline Güncellemesi --- */
.timeline-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 30px;
    border-left: 2px solid var(--glass-border);
}

.timeline-wrapper {
    position: relative;
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    text-align: left;
}

.timeline-marker {
    position: absolute;
    left: -41px;
    top: 20px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: 4px solid var(--accent-primary);
    box-shadow: 0 0 10px rgba(37, 99, 235, 0.3);
}

.timeline-content {
    padding: 32px;
}

.timeline-date {
    display: inline-block;
    color: var(--accent-primary);
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 0.95rem;
}

/* --- Okuma İlerleme Çubuğu --- */
.reading-progress-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: transparent;
    z-index: 1000;
}

.reading-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    width: 0%;
    transition: width 0.1s ease-out;
}

/* --- Video Wrapper --- */
.video-wrapper {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    border: 1px solid var(--glass-border);
    background: white;
    padding: 8px;
}

.video-wrapper video {
    width: 100%;
    border-radius: 8px;
    display: block;
}

/* Etkinlikler */
.event-card {
    padding: 0;
    overflow: hidden;
}
.event-image {
    height: 200px;
    background: #e2e8f0;
    position: relative;
}
.event-image::after {
    content: 'Fotoğraf Gelecek';
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    color: var(--text-secondary);
    font-family: var(--font-heading);
}
.event-details {
    padding: 24px;
}
.event-details h3 {
    margin-bottom: 8px;
    color: var(--text-primary);
}

/* CTA */
.cta-text {
    font-size: 1.15rem;
    line-height: 1.8;
}

/* Footer */
footer {
    padding: 40px 0;
    border-top: 1px solid var(--glass-border);
    background: white;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* --- Yatay Kart Layout --- */
.horizontal-card { padding: 0; overflow: hidden; margin-bottom: 32px; text-align: left; }
.hc-header { padding: 20px 32px; background: rgba(37, 99, 235, 0.05); border-bottom: 1px solid var(--glass-border); display: flex; align-items: center; gap: 12px; }
.hc-header h3 { margin: 0; font-size: 1.5rem; color: var(--accent-primary); }
.hc-body { padding: 32px; display: grid; grid-template-columns: 1fr 1.5fr; gap: 32px; }
.hc-body p { color: var(--text-secondary); margin-top: 8px; }
.hc-body ul { padding-left: 20px; color: var(--text-secondary); margin-top: 12px; }
.hc-body li { margin-bottom: 8px; }
@media (max-width: 768px) {
    .hc-body { grid-template-columns: 1fr; gap: 24px; padding: 24px; }
    .hc-header { padding: 16px 24px; }
}

/* --- Scroll Animasyonları --- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}
.reveal.active {
    opacity: 1;
    transform: translateY(0);
}
.reveal-delay {
    transition-delay: 0.2s;
}

/* --- Yan Widget ve Çekmece Stilleri --- */
.side-widgets {
    position: fixed;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    z-index: 998;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
}

.side-widget-btn {
    position: relative;
    background: white;
    border: 1px solid var(--glass-border);
    border-left: none;
    padding: 12px 16px 12px 12px;
    border-radius: 0 12px 12px 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 4px 4px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    width: auto;
    overflow: visible;
}

.side-widget-btn:hover {
    transform: translateX(5px);
    box-shadow: 6px 6px 20px rgba(0,0,0,0.1);
}

.widget-icon {
    font-size: 1.5rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
}

.widget-text {
    font-weight: 600;
    color: var(--text-primary);
    font-family: var(--font-heading);
    white-space: nowrap;
    min-width: 105px;
    text-align: left;
}

.whatsapp-icon {
    color: #25D366;
}

#btn-whatsapp .widget-text {
    color: #128C7E;
}

#btn-duyuru .widget-text {
    color: var(--accent-primary);
}

.notification-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: #ef4444;
    color: white;
    font-size: 0.75rem;
    font-weight: 800;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 2px solid white;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    transition: opacity 0.3s, transform 0.3s;
    z-index: 2;
}

.notification-badge.hidden {
    opacity: 0;
    transform: scale(0);
    pointer-events: none;
}

/* Çekmece (Drawer) */
.side-drawer {
    position: fixed;
    top: 0;
    left: -400px;
    width: 400px;
    height: 100vh;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--glass-border);
    box-shadow: 10px 0 30px rgba(0,0,0,0.1);
    z-index: 1000;
    transition: left 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.side-drawer.open {
    left: 0;
}

.drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0,0,0,0.3);
    backdrop-filter: blur(2px);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.drawer-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    border-bottom: 1px solid var(--glass-border);
    background: rgba(241, 245, 249, 0.5);
}

.drawer-header h3 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.close-drawer {
    background: none;
    border: none;
    font-size: 2rem;
    line-height: 1;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s;
}

.close-drawer:hover {
    color: #ef4444;
}

.drawer-body {
    padding: 24px;
}

.drawer-body p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.drawer-links {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.drawer-link-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px;
    background: white;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
    box-shadow: 0 4px 10px rgba(0,0,0,0.02);
}

.drawer-link-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    border-color: var(--accent-primary);
}

.drawer-link-card.whatsapp-link:hover {
    border-color: #25D366;
}

.dl-icon {
    font-size: 2rem;
    background: var(--bg-secondary);
    padding: 10px;
    border-radius: 10px;
}

.drawer-link-card div {
    display: flex;
    flex-direction: column;
}

.drawer-link-card strong {
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.drawer-link-card span {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.warning-note {
    background: rgba(245, 158, 11, 0.1);
    border-left: 4px solid #f59e0b;
    padding: 16px;
    border-radius: 0 8px 8px 0;
}

.warning-note p {
    margin: 0;
    font-size: 0.9rem;
    color: #b45309;
}

.warning-note a {
    color: #b45309;
    font-weight: bold;
}

/* Çekmece içi timeline düzeltmeleri */
.side-drawer .timeline-container {
    padding-left: 20px;
    border-left: none;
    max-width: 100%;
}

.side-drawer .timeline-content {
    padding: 20px;
}

.side-drawer .timeline-content h4 {
    font-size: 1.1rem;
}

.side-drawer .timeline-content p {
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
    }
    .hero-title {
        font-size: 2.5rem;
    }
    .nav-links {
        display: none;
    }
    .section {
        padding: 60px 0;
    }
    
    /* Yan widget'ları mobilde daralt */
    .side-widget-btn {
        padding: 12px;
        gap: 0;
    }
    .widget-text {
        max-width: 0;
        min-width: 0;
        opacity: 0;
        overflow: hidden;
        transition: all 0.3s ease;
    }
    .side-widget-btn:hover .widget-text,
    .side-widget-btn:active .widget-text {
        max-width: 150px;
        min-width: 105px;
        opacity: 1;
        margin-left: 12px;
    }
}

@media (max-width: 480px) {
    .side-drawer {
        width: 100%;
        left: -100%;
    }
}

/* X (Twitter) Kampanya Butonu Stilleri */
.x-campaign-card {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.05), transparent);
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 12px;
    padding: 16px;
}

.btn-x-twitter {
    background-color: #0f172a;
    color: white;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-x-twitter:hover {
    background-color: #000000;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}