/* =========================================================
   CSR Garment - Genel Site Stili (v2)
   Editoryal, fotoğraf odaklı, siyah/beyaz zemin + indigo vurgu.
   Referans dil: fashionpoint.com.tr'nin büyük tipografi, düz
   (gölgesiz/köşesiz) tam-genişlik görsel yaklaşımı — kendi
   indigo/denim vurgu rengimiz ve kompozisyonumuzla.
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Poppins:wght@500;600;700;800&family=Inter:wght@400;500;600&display=swap');

:root {
    --color-black: #0c0c10;
    --color-black-soft: #17171d;
    --color-white: #ffffff;
    --color-off: #f3f2ee;
    --color-accent: #3a4de0;
    --color-accent-dark: #2c3bb0;
    --color-text: #131316;
    --color-text-muted: #6c6c76;
    --color-line: #e3e1da;
    --color-line-dark: rgba(255,255,255,0.14);

    --font-display: 'Bebas Neue', 'Poppins', sans-serif;
    --font-heading: 'Poppins', 'Segoe UI', sans-serif;
    --font-body: 'Inter', 'Segoe UI', sans-serif;

    --container: 1240px;
    --transition: 0.3s ease;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-white);
    line-height: 1.65;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
    font-family: var(--font-heading);
    color: var(--color-black);
    line-height: 1.15;
    margin: 0 0 0.5em;
}

h1 { font-family: var(--font-display); font-weight: 400; letter-spacing: 0.02em; font-size: clamp(3.2rem, 8vw, 7rem); text-transform: uppercase; }
h2 { font-family: var(--font-display); font-weight: 400; letter-spacing: 0.02em; font-size: clamp(2.4rem, 5vw, 4rem); text-transform: uppercase; }
h3 { font-family: var(--font-heading); font-weight: 700; font-size: 1.05rem; letter-spacing: 0.03em; text-transform: uppercase; }

p { margin: 0 0 1em; color: var(--color-text-muted); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; margin: 0; padding: 0; }

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 28px;
}

.section { padding: 110px 0; }
.section-sm { padding: 64px 0; }
.section-alt { background: var(--color-off); }
.section-dark { background: var(--color-black); color: rgba(255,255,255,0.85); }
.section-dark h2, .section-dark h3 { color: var(--color-white); }
.section-dark p { color: rgba(255,255,255,0.62); }

.eyebrow {
    display: inline-block;
    color: var(--color-accent);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.78rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.section-head {
    max-width: 720px;
    margin: 0 0 56px;
}
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head p { font-size: 1.05rem; }

/* ---------- Buttons ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.82rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 16px 32px;
    border-radius: 0;
    border: 1.5px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-black);
    color: var(--color-white);
    border-color: var(--color-black);
}
.btn-primary:hover { background: var(--color-accent); border-color: var(--color-accent); }

.btn-outline {
    background: transparent;
    color: var(--color-black);
    border-color: var(--color-black);
}
.btn-outline:hover { background: var(--color-black); color: var(--color-white); }

.btn-outline-light {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255,255,255,0.55);
}
.btn-outline-light:hover { background: var(--color-white); color: var(--color-black); border-color: var(--color-white); }

.btn-block { width: 100%; justify-content: center; }
.btn-sm { padding: 11px 20px; font-size: 0.72rem; }

/* ---------- Header (minimal, hamburger-only) ---------- */

.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: 26px 0;
    transition: var(--transition);
    background: transparent;
}
.site-header.is-scrolled {
    background: rgba(12,12,16,0.92);
    backdrop-filter: blur(6px);
    padding: 16px 0;
}

.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-heading); font-weight: 800; font-size: 1.3rem; letter-spacing: 0.04em; color: var(--color-white); }
.logo img { height: 40px; width: auto; }
.logo span.accent { color: var(--color-accent); }

.nav-toggle {
    position: relative;
    z-index: 2100;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-end;
    gap: 6px;
    width: 30px;
    height: 30px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}
.nav-toggle span { display: block; width: 26px; height: 2px; background: var(--color-white); transition: var(--transition); }
.nav-toggle span:nth-child(2) { width: 18px; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(8px) rotate(45deg); width: 26px; }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); width: 26px; }

/* ---------- Full-screen nav overlay ---------- */

.nav-overlay {
    position: fixed;
    inset: 0;
    z-index: 1500;
    background: var(--color-black);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 36px;
    padding: 110px 24px 50px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-16px);
    transition: opacity 0.4s ease, transform 0.4s ease, visibility 0.4s;
}
.nav-overlay.open { opacity: 1; visibility: visible; transform: translateY(0); }

.main-nav { display: flex; flex-direction: column; align-items: center; gap: 2px; margin: auto 0; }
.main-nav a {
    font-family: var(--font-display);
    font-size: clamp(1.7rem, 4.2vw, 2.7rem);
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.88);
    padding: 8px 0;
    transition: var(--transition);
}
.main-nav a:hover, .main-nav a.active { color: var(--color-accent); }

.overlay-footer { display: flex; flex-direction: column; align-items: center; gap: 22px; flex-shrink: 0; }

.lang-switch { display: flex; gap: 4px; font-family: var(--font-heading); font-weight: 700; font-size: 0.78rem; }
.lang-switch a {
    padding: 6px 12px;
    color: rgba(255,255,255,0.6);
    border: 1px solid rgba(255,255,255,0.3);
}
.lang-switch a.active { background: var(--color-accent); color: var(--color-white); border-color: var(--color-accent); }

/* ---------- Hero ---------- */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--color-black);
    overflow: hidden;
}
.hero-slide {
    position: absolute; inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transform: scale(1);
    transition: opacity 1.2s ease;
    animation: heroKenBurns 14s ease-in-out infinite alternate;
}
.hero-slide.active { opacity: 1; }
.hero-slide::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(12,12,16,0.35) 0%, rgba(12,12,16,0.78) 100%);
}
@keyframes heroKenBurns {
    from { transform: scale(1); }
    to { transform: scale(1.12); }
}

.hero-video {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
}
.hero-video-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(12,12,16,0.35) 0%, rgba(12,12,16,0.78) 100%);
}

/* YouTube arka plan videosu: iframe'i her zaman 16:9 oranında,
   konteyneri taşacak şekilde ortalayıp kırpar (object-fit:cover muadili) */
.hero-youtube-wrap {
    position: absolute; inset: 0;
    overflow: hidden;
    pointer-events: none;
}
.hero-youtube-wrap iframe {
    position: absolute;
    top: 50%; left: 50%;
    width: 100vw;
    height: 56.25vw; /* 16:9 */
    min-height: 100vh;
    min-width: 177.78vh; /* 16:9 */
    transform: translate(-50%, -50%);
    border: 0;
}
.hero-content {
    position: relative;
    z-index: 2;
    max-width: 780px;
    color: var(--color-white);
    padding: 0 28px;
    margin: 0 auto;
    width: 100%;
    text-align: center;
}
.hero-content .eyebrow { color: rgba(255,255,255,0.7); letter-spacing: 0.3em; }
.hero-content h1 { color: var(--color-white); margin-bottom: 0.2em; }
.hero-content p { color: rgba(255,255,255,0.75); font-size: 1.1rem; max-width: 560px; margin: 0 auto 32px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.hero-dots { position: absolute; bottom: 36px; left: 50%; transform: translateX(-50%); z-index: 2; display: flex; gap: 12px; }
.hero-dots button { width: 8px; height: 8px; border-radius: 50%; border: 1.5px solid rgba(255,255,255,0.6); background: transparent; cursor: pointer; padding: 0; }
.hero-dots button.active { background: var(--color-accent); border-color: var(--color-accent); }

/* ---------- Stats strip ---------- */

.stats-strip {
    background: var(--color-black);
    padding: 64px 0;
    border-top: 1px solid var(--color-line-dark);
}
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 24px; text-align: center; }
.stat-number { font-family: var(--font-display); font-weight: 400; font-size: 3rem; color: var(--color-white); }
.stat-label { color: rgba(255,255,255,0.55); font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; }

/* ---------- Grids & cards (flat, edge-to-edge) ---------- */

.grid { display: grid; gap: 4px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
    background: var(--color-white);
    overflow: hidden;
    transition: var(--transition);
}

.collection-card { position: relative; overflow: hidden; aspect-ratio: 4/5; background: var(--color-black); }
.collection-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s ease; opacity: 0.92; }
.collection-card:hover img { transform: scale(1.06); opacity: 1; }
.collection-card .overlay {
    position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(12,12,16,0) 35%, rgba(12,12,16,0.94) 100%);
    display: flex; flex-direction: column; justify-content: flex-end;
    padding: 28px; color: var(--color-white);
}
.collection-card .overlay h3 { color: var(--color-white); margin-bottom: 8px; letter-spacing: 0.04em; }
.collection-card .overlay p { color: rgba(255,255,255,0.72); font-size: 0.88rem; margin-bottom: 16px; }
.collection-card .overlay .btn { opacity: 0; transform: translateY(8px); transition: var(--transition); }
.collection-card:hover .overlay .btn { opacity: 1; transform: translateY(0); }

.card-body { padding: 26px 4px; }

/* ---------- Tabs (pill style, Üretim & Teknoloji) ---------- */

.tabs-nav { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-bottom: 50px; }
.tabs-nav button {
    background: transparent;
    border: 1.5px solid rgba(255,255,255,0.3);
    color: rgba(255,255,255,0.75);
    cursor: pointer;
    padding: 13px 26px;
    border-radius: 999px;
    font-family: var(--font-heading); font-weight: 600; font-size: 0.82rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    transition: var(--transition);
}
.tabs-nav button.active { color: var(--color-white); background: var(--color-accent); border-color: var(--color-accent); }
.tab-panel { display: none; animation: fadeIn .4s ease; }
.tab-panel.active { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.tab-panel img { width: 100%; }
.tab-panel h3 { color: var(--color-white); }
.tab-panel p { color: rgba(255,255,255,0.65); }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px);} to { opacity: 1; transform: translateY(0);} }

/* ---------- Sustainability / certifications ---------- */

.cert-card { text-align: center; padding: 40px 24px; border: 1px solid var(--color-line); }
.section-dark .cert-card { border-color: var(--color-line-dark); }
.cert-icon { width: 10px; height: 10px; margin: 0 auto 22px; background: var(--color-accent); border-radius: 50%; }

/* ---------- References ---------- */

.ref-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; background: var(--color-line); }
.ref-grid .ref-logo { display: flex; align-items: center; justify-content: center; padding: 30px; background: var(--color-white); filter: grayscale(1); opacity: .55; transition: var(--transition); }
.ref-grid .ref-logo:hover { filter: grayscale(0); opacity: 1; }
.ref-grid img { max-height: 42px; }

/* ---------- CTA banner ---------- */

.cta-banner {
    background: var(--color-black);
    color: var(--color-white);
    padding: 90px 40px;
    text-align: center;
}
.cta-banner h2 { color: var(--color-white); }
.cta-banner p { color: rgba(255,255,255,0.6); max-width: 560px; margin: 0 auto 32px; }

/* ---------- Forms ---------- */

.form-group { margin-bottom: 22px; }
.form-group label { display: block; font-family: var(--font-heading); font-weight: 600; font-size: 0.76rem; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 10px; color: var(--color-black); }
.form-control {
    width: 100%;
    padding: 14px 4px;
    border: none;
    border-bottom: 1.5px solid var(--color-line);
    border-radius: 0;
    font-family: var(--font-body);
    font-size: 0.95rem;
    background: transparent;
    transition: var(--transition);
}
.form-control:focus { outline: none; border-color: var(--color-black); }
textarea.form-control { resize: vertical; min-height: 120px; }

.alert { padding: 16px 20px; margin-bottom: 24px; font-size: 0.9rem; border: 1.5px solid; }
.alert-success { background: #f1f5ef; color: #2a6b3f; border-color: #bfe4c8; }
.alert-error { background: #fbe9e7; color: #a83f30; border-color: #f3c9c2; }

/* ---------- Footer ---------- */

.site-footer { position: relative; background: var(--color-black); color: rgba(255,255,255,0.6); padding: 90px 0 0; overflow: hidden; }
.site-footer::after {
    content: 'CSR';
    position: absolute;
    right: -0.05em; bottom: -0.22em;
    font-family: var(--font-display);
    font-size: 22vw;
    line-height: 1;
    color: rgba(255,255,255,0.035);
    pointer-events: none;
    white-space: nowrap;
}
.footer-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 40px; padding-bottom: 56px; }
.footer-grid h4 { color: var(--color-white); font-size: 0.82rem; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 22px; }
.footer-grid a { color: rgba(255,255,255,0.5); display: block; padding: 7px 0; transition: var(--transition); font-size: 0.9rem; }
.footer-grid a:hover { color: var(--color-accent); }
.footer-logo { font-family: var(--font-heading); font-weight: 800; font-size: 1.3rem; letter-spacing: 0.04em; color: var(--color-white); margin-bottom: 16px; }
.footer-logo span.accent { color: var(--color-accent); }
.social-row { display: flex; gap: 10px; margin-top: 18px; }
.social-row a { width: 38px; height: 38px; border: 1px solid rgba(255,255,255,0.2); border-radius: 50%; display: flex; align-items: center; justify-content: center; padding: 0; }
.social-row a:hover { background: var(--color-accent); border-color: var(--color-accent); }
.footer-bottom { position: relative; z-index: 1; border-top: 1px solid rgba(255,255,255,0.1); padding: 24px 0; text-align: center; font-size: 0.8rem; color: rgba(255,255,255,0.4); }

/* ---------- Page header (inner pages) ---------- */

.page-header {
    background: var(--color-black);
    background-size: cover;
    background-position: center;
    position: relative;
    padding: 210px 0 90px;
    text-align: center;
}
.page-header::after { content: ''; position: absolute; inset: 0; background: rgba(12,12,16,0.6); }
.page-header .container { position: relative; z-index: 1; }
.page-header .eyebrow { color: rgba(255,255,255,0.6); }
.page-header h1 { color: var(--color-white); margin-bottom: 14px; }
.page-header .breadcrumb { color: rgba(255,255,255,0.55); font-size: 0.82rem; letter-spacing: 0.06em; text-transform: uppercase; }
.page-header .breadcrumb a { color: rgba(255,255,255,0.85); }
.page-header .breadcrumb a:hover { color: var(--color-accent); }

/* ---------- Blog ---------- */

.blog-card img { aspect-ratio: 16/10; object-fit: cover; }
.blog-card .card-body .date { color: var(--color-accent); font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 10px; }

/* ---------- Contact ---------- */

.contact-info-item { display: flex; gap: 18px; margin-bottom: 28px; align-items: flex-start; }
.contact-info-item .icon { width: 42px; height: 42px; border: 1px solid var(--color-line); color: var(--color-accent); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.map-frame { overflow: hidden; }
.map-frame iframe { width: 100%; height: 360px; border: 0; display: block; }

/* ---------- Responsive ---------- */

@media (max-width: 992px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .ref-grid { grid-template-columns: repeat(3, 1fr); }
    .tab-panel.active { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .ref-grid { grid-template-columns: repeat(2, 1fr); }
    .cta-banner { padding: 56px 24px; }
    .section { padding: 70px 0; }
    .site-footer::after { font-size: 34vw; }
}