/* ==========================================================================
   ATLI KULEVİNÇ - CSS STİL DOSYASI
   ========================================================================== */

:root {
    --bg-main: #0d131d;
    --bg-card: #141c2a;
    --bg-card-hover: #1c273a;
    --bg-header: rgba(13, 19, 29, 0.92);

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --accent-yellow: #f1a100;
    --accent-yellow-hover: #d98e00;
    --accent-glow: rgba(241, 161, 0, 0.25);
    
    --accent-whatsapp: #25d366;
    --accent-whatsapp-hover: #1da851;

    --border-color: rgba(255, 255, 255, 0.08);

    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'Fira Code', monospace;

    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px auto;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
}

/* Buton Stilleri */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--accent-yellow);
    color: #0d131d;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    background-color: var(--accent-yellow-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(241, 161, 0, 0.4);
}

.btn-whatsapp {
    background-color: var(--accent-whatsapp);
    color: #ffffff;
}

.btn-whatsapp:hover {
    background-color: var(--accent-whatsapp-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.3);
}

.btn-outline {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
    background-color: rgba(241, 161, 0, 0.1);
    border-color: var(--accent-yellow);
    color: var(--accent-yellow);
    transform: translateY(-2px);
}

.btn-block { width: 100%; }

/* Header & Logo */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition-normal);
    background-color: transparent;
}

.header.scrolled {
    padding: 10px 0;
    background-color: var(--bg-header);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0,0,0,0.6);
}

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

.logo-img {
    height: 90px;
    width: auto;
    object-fit: contain;
    background-color: #ffffff;
    padding: 8px 16px;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
    transition: var(--transition-normal);
    display: block;
}

.header.scrolled .logo-img {
    height: 70px;
    padding: 6px 12px;
}

.logo-img:hover { transform: scale(1.03); }

.logo-img-footer {
    height: 110px;
    width: auto;
    object-fit: contain;
    background-color: #ffffff;
    padding: 10px 20px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    margin-bottom: 15px;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.nav-link:hover { color: var(--accent-yellow); }

.nav-btn {
    padding: 10px 22px;
    border: 1px solid var(--accent-yellow);
    border-radius: 6px;
    color: var(--accent-yellow);
    font-weight: 600;
}

.nav-btn:hover {
    background-color: var(--accent-yellow);
    color: #0d131d;
}

.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
    z-index: 1001;
}

.hamburger .bar {
    width: 26px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition-normal);
    border-radius: 2px;
}

/* HERO AREA */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 170px;
    padding-bottom: 60px;
    position: relative;
    overflow: hidden;
    background-color: #0d131d;
}

.video-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.video-background video {
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    object-fit: cover;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(13, 19, 29, 0.72) 0%, rgba(13, 19, 29, 0.92) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 850px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background-color: rgba(241, 161, 0, 0.18);
    border: 1px solid rgba(241, 161, 0, 0.4);
    backdrop-filter: blur(5px);
    border-radius: 30px;
    color: var(--accent-yellow);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.hero-title span { color: var(--accent-yellow); }

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    max-width: 680px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 60px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-yellow);
    font-family: var(--font-mono);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Hakkımızda */
.about { background-color: var(--bg-main); }

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.about-card {
    background-color: var(--bg-card);
    padding: 36px 28px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.about-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-yellow);
    background-color: var(--bg-card-hover);
}

.card-icon {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    background-color: rgba(241, 161, 0, 0.12);
    color: var(--accent-yellow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 20px;
}

.about-card h3 { font-size: 1.25rem; margin-bottom: 12px; }
.about-card p { color: var(--text-secondary); font-size: 0.95rem; }

/* GALERİ BÖLÜMÜ */
.gallery-section {
    background-color: rgba(20, 28, 42, 0.5);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.gallery-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    height: 280px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    background-color: #05080c;
}

.gallery-item img,
.gallery-item video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 30%, rgba(13, 19, 29, 0.95) 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 20px;
    transition: var(--transition-normal);
    z-index: 3;
}

.gallery-tag {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--accent-yellow);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.gallery-overlay h4 { font-size: 1.05rem; color: var(--text-primary); font-weight: 600; }

.gallery-item:hover img,
.gallery-item:hover video { 
    transform: scale(1.08); 
}

.play-icon-badge {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 54px;
    height: 54px;
    background-color: rgba(241, 161, 0, 0.88);
    color: #0d131d;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.6);
    transition: var(--transition-normal);
    z-index: 2;
    padding-left: 3px;
}

.gallery-item:hover .play-icon-badge {
    transform: translate(-50%, -50%) scale(1.15);
    background-color: var(--accent-yellow);
}

/* LIGHTBOX / MODAL */
.lightbox-modal {
    position: fixed;
    inset: 0;
    background-color: rgba(8, 12, 18, 0.94);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    padding: 20px;
}

.lightbox-modal.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 82vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-content img,
.lightbox-content video {
    max-width: 100%;
    max-height: 82vh;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 15px 50px rgba(0,0,0,0.9);
    border: 1px solid var(--border-color);
}

.lightbox-close {
    position: absolute;
    top: 25px;
    right: 25px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    color: #fff;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    font-size: 1.4rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    z-index: 2010;
}

.lightbox-close:hover {
    background-color: var(--accent-yellow);
    color: #0d131d;
    transform: scale(1.1);
}

.lightbox-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    color: #fff;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    font-size: 1.3rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    z-index: 2010;
}

.lightbox-arrow:hover {
    background-color: var(--accent-yellow);
    color: #0d131d;
    transform: translateY(-50%) scale(1.1);
}

.lightbox-prev { left: 25px; }
.lightbox-next { right: 25px; }

.lightbox-caption {
    position: absolute;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    background: rgba(20, 28, 42, 0.85);
    padding: 10px 24px;
    border-radius: 30px;
    border: 1px solid var(--border-color);
    text-align: center;
    backdrop-filter: blur(5px);
}

/* Teknik Özellikler */
.specs-section { background-color: var(--bg-main); }

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.spec-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
}

.spec-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: var(--accent-yellow);
}

.spec-header i { font-size: 1.3rem; }
.spec-header h3 { color: var(--text-primary); font-size: 1.1rem; }

.spec-code {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-yellow);
    background-color: rgba(241, 161, 0, 0.1);
    padding: 8px 12px;
    border-radius: 6px;
    margin-bottom: 12px;
    display: inline-block;
}

.spec-card p { color: var(--text-secondary); font-size: 0.9rem; }

/* İletişim Formu */
.contact { background-color: rgba(20, 28, 42, 0.4); }

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
    align-items: start;
}

.contact-info h3 { font-size: 1.6rem; margin-bottom: 12px; }
.contact-info p { color: var(--text-secondary); margin-bottom: 30px; }

.info-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    transition: var(--transition-fast);
}

.info-item:hover { border-color: var(--accent-yellow); }

.info-icon {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.whatsapp-bg { background-color: rgba(37, 211, 102, 0.15); color: var(--accent-whatsapp); }
.mail-bg { background-color: rgba(241, 161, 0, 0.15); color: var(--accent-yellow); }
.location-bg { background-color: rgba(239, 68, 68, 0.15); color: #ef4444; }

.info-item span { display: block; font-size: 0.8rem; color: var(--text-muted); }
.info-item strong { font-size: 0.95rem; color: var(--text-primary); }

.contact-form-card {
    background-color: var(--bg-card);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.form-group { margin-bottom: 20px; }
.form-group-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background-color: rgba(13, 19, 29, 0.7);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-yellow);
    box-shadow: 0 0 0 3px rgba(241, 161, 0, 0.15);
}

.floating-whatsapp {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: var(--accent-whatsapp);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    box-shadow: 0 10px 25px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: var(--transition-normal);
}

.floating-whatsapp:hover {
    transform: scale(1.1) rotate(8deg);
    background-color: var(--accent-whatsapp-hover);
}

.footer {
    background-color: var(--bg-main);
    padding: 50px 0 30px 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-brand p { font-size: 0.85rem; color: var(--text-muted); margin-top: 6px; }
.footer-copy { font-size: 0.85rem; color: var(--text-muted); }

/* Mobil & Tablet */
@media (max-width: 992px) {
    .contact-wrapper { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    section { padding: 60px 0; }
    .hero-title { font-size: 2.2rem; }
    .hero-stats { grid-template-columns: 1fr; gap: 16px; }
    .hamburger { display: flex; }

    .logo-img { height: 65px; padding: 5px 10px; }
    .header.scrolled .logo-img { height: 55px; }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--bg-card);
        padding: 100px 30px 40px 30px;
        box-shadow: -10px 0 30px rgba(0,0,0,0.8);
        transition: right 0.4s ease;
        z-index: 1000;
        border-left: 1px solid var(--border-color);
    }

    .nav-menu.active { right: 0; }
    .nav-list { flex-direction: column; align-items: flex-start; gap: 24px; }

    .hamburger.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .hamburger.active .bar:nth-child(2) { opacity: 0; }
    .hamburger.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

    .form-group-row { grid-template-columns: 1fr; }
    .contact-form-card { padding: 24px; }

    .lightbox-arrow {
        width: 42px;
        height: 42px;
        font-size: 1.1rem;
    }
    .lightbox-prev { left: 10px; }
    .lightbox-next { right: 10px; }
    .lightbox-close { top: 15px; right: 15px; width: 40px; height: 40px; }
}