/* ============================================================
   Akmin Industrial Minerals — style.css
   Palette drawn from the Akmin logo: deep navy + powder blue,
   set against mineral whites and stone grays.
   ============================================================ */

:root {
  --ink: #0a0f2e;          /* logo navy, primary text */
  --ink-soft: #3c4358;
  --muted: #5f6879;
  --accent: #a8d3f2;       /* logo powder blue */
  --accent-deep: #2e6da4;
  --bg: #ffffff;
  --surface: #f5f8fb;
  --line: #e3e9f0;
  --radius: 14px;
  --radius-sm: 9px;
  --maxw: 1140px;
  --shadow: 0 10px 30px rgba(10, 15, 46, 0.08);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand svg { height: 34px; width: auto; }

.main-nav { display: flex; align-items: center; gap: 28px; }

.main-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-soft);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

.main-nav a:hover { color: var(--ink); }
.main-nav a.active { color: var(--ink); border-bottom-color: var(--accent-deep); }

.header-actions { display: flex; align-items: center; gap: 16px; }

.lang-toggle {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  font-size: 13px;
  font-weight: 600;
}

.lang-toggle button {
  border: 0;
  background: transparent;
  padding: 6px 13px;
  cursor: pointer;
  font: inherit;
  color: var(--muted);
  transition: background 0.15s, color 0.15s;
}

.lang-toggle button.active { background: var(--ink); color: #fff; }

.nav-cta {
  display: inline-block;
  background: var(--ink);
  color: #fff;
  font-size: 14.5px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 999px;
  transition: background 0.15s, transform 0.15s;
}

.nav-cta:hover { background: var(--accent-deep); }

.nav-burger {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  width: 42px;
  height: 42px;
  cursor: pointer;
  font-size: 18px;
  color: var(--ink);
}

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

.hero {
  position: relative;
  min-height: 78vh;
  display: flex;
  align-items: flex-end;
  color: #fff;
  isolation: isolate;
  background-size: cover;
  background-position: center;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,15,46,0.38) 0%, rgba(10,15,46,0.28) 40%, rgba(10,15,46,0.85) 100%);
  z-index: -1;
}

.hero-content { padding-top: 96px; padding-bottom: 72px; max-width: 780px; }

.kicker {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero p {
  font-size: clamp(17px, 2vw, 20px);
  color: rgba(255,255,255,0.86);
  max-width: 620px;
  margin-bottom: 32px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  font-weight: 600;
  font-size: 15.5px;
  padding: 13px 26px;
  border-radius: 999px;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  border: 1.5px solid transparent;
  cursor: pointer;
  font-family: inherit;
}

.btn-primary { background: var(--accent); color: var(--ink); }
.btn-primary:hover { background: #fff; }

.btn-ghost { border-color: rgba(255,255,255,0.55); color: #fff; }
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,0.12); }

.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: var(--accent-deep); }

.btn-outline { border-color: var(--ink); color: var(--ink); }
.btn-outline:hover { background: var(--ink); color: #fff; }

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

.stats {
  background: var(--ink);
  color: #fff;
  padding: 40px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stat .stat-value {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--accent);
  margin-bottom: 4px;
}

.stat .stat-label { font-size: 14px; color: rgba(255,255,255,0.72); line-height: 1.45; }

/* ---------- Sections ---------- */

.section { padding: 88px 0; }
.section.alt { background: var(--surface); }

.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head.centered { margin-left: auto; margin-right: auto; text-align: center; }

.section-head .kicker { color: var(--accent-deep); }

.section-head h2 {
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 14px;
}

.section-head p { color: var(--muted); font-size: 17px; }

/* ---------- Material cards ---------- */

.materials-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.material-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.2s;
}

.material-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }

.material-card img { height: 260px; width: 100%; object-fit: cover; }

.material-card .card-body { padding: 28px; }

.material-card h3 { font-size: 22px; font-weight: 700; margin-bottom: 10px; }

.material-card p { color: var(--muted); font-size: 15.5px; margin-bottom: 18px; }

.text-link {
  font-weight: 600;
  font-size: 15px;
  color: var(--accent-deep);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.text-link:hover { text-decoration: underline; }

/* ---------- Services ---------- */

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.service {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
}

.service .service-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-deep);
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

.service h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.service p { font-size: 14.5px; color: var(--muted); }

/* ---------- Split (image + text) ---------- */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.split img {
  border-radius: var(--radius);
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.split h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.18;
  margin-bottom: 16px;
}

.split p { color: var(--muted); margin-bottom: 14px; }

.split .btn { margin-top: 12px; }

/* ---------- Applications chips ---------- */

.chips { display: flex; flex-wrap: wrap; gap: 10px; }

.chip {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
}

/* ---------- Recipe tool preview ---------- */

.demo-window {
  background: var(--ink);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  color: #e8edf5;
}

.demo-titlebar {
  display: flex;
  gap: 7px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.demo-titlebar span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
}

.demo-body {
  padding: 26px 30px 8px;
}

.demo-tabs { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px; }

.demo-tab {
  text-align: left;
  font: inherit;
  font-size: 14.5px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.75);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.demo-tab:hover { border-color: var(--accent); color: #fff; }
.demo-tab.active { background: var(--accent); border-color: var(--accent); color: var(--ink); }

.demo-shot {
  display: flex;
  justify-content: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: 14px;
}

.demo-shot img {
  max-width: 100%;
  max-height: 620px;
  height: auto;
  border-radius: 6px;
}

.demo-caption {
  font-size: 15.5px;
  line-height: 1.6;
  color: #d9e3f0;
  margin: 0 2px 18px;
  max-width: 800px;
}

.demo-caption strong { color: #fff; font-weight: 700; }

.demo-note {
  padding: 14px 36px 22px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.48);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 6px;
}

@media (max-width: 860px) {
  .demo-body { padding: 18px 16px 4px; }
  .demo-note { padding: 12px 22px 18px; }
  .demo-shot { padding: 8px; }
}

/* ---------- CTA band ---------- */

.cta-band {
  position: relative;
  color: #fff;
  padding: 96px 0;
  isolation: isolate;
  text-align: center;
  background-size: cover;
  background-position: center;
}

.cta-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(10, 15, 46, 0.82);
  z-index: -1;
}

.cta-band h2 {
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.cta-band p { color: rgba(255,255,255,0.8); max-width: 560px; margin: 0 auto 32px; }

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

.page-hero {
  background: var(--ink);
  color: #fff;
  padding: 84px 0 64px;
}

.page-hero .kicker { color: var(--accent); }

.page-hero h1 {
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 16px;
  max-width: 760px;
}

.page-hero p { color: rgba(255,255,255,0.78); max-width: 640px; font-size: 17.5px; }

/* ---------- Material detail ---------- */

.material-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }

.material-detail img {
  border-radius: var(--radius);
  width: 100%;
  height: 380px;
  object-fit: cover;
  position: sticky;
  top: 100px;
}

.material-detail h2 { font-size: 30px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 14px; }
.material-detail > div > p { color: var(--muted); margin-bottom: 22px; }

.detail-list { list-style: none; margin-bottom: 26px; }

.detail-list li {
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15.5px;
  display: flex;
  gap: 12px;
  align-items: baseline;
}

.detail-list li::before {
  content: "•";
  color: var(--accent-deep);
  font-weight: 700;
}

/* ---------- Comparison table ---------- */

.compare-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  font-size: 15px;
}

.compare-table th, .compare-table td { padding: 16px 20px; text-align: left; vertical-align: top; }

.compare-table thead th {
  background: var(--ink);
  color: #fff;
  font-size: 13.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.compare-table tbody tr:not(:last-child) { border-bottom: 1px solid var(--line); }

.compare-table tbody th { font-weight: 600; color: var(--ink); width: 22%; background: var(--surface); }

.compare-table td { color: var(--ink-soft); }

.table-wrap { overflow-x: auto; }

/* ---------- Timeline ---------- */

.timeline { list-style: none; position: relative; padding-left: 34px; }

.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: var(--line);
}

.timeline li { position: relative; padding-bottom: 36px; }
.timeline li:last-child { padding-bottom: 0; }

.timeline li::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 7px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--ink);
}

.timeline .t-year {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin-bottom: 4px;
}

.timeline h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.timeline p { color: var(--muted); font-size: 15.5px; max-width: 560px; }

/* ---------- Leadership ---------- */

.leader-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 560px;
}

.leader-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 4px; }
.leader-card .leader-role { color: var(--accent-deep); font-weight: 600; font-size: 14.5px; margin-bottom: 14px; }
.leader-card p { color: var(--muted); font-size: 15.5px; margin-bottom: 18px; }

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

.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; align-items: start; }

.contact-info-list { list-style: none; }

.contact-info-list li {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  align-items: flex-start;
}

.contact-info-list .ci-icon {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  color: var(--accent-deep);
}

.contact-info-list h3 { font-size: 15px; font-weight: 700; margin-bottom: 2px; }
.contact-info-list p { color: var(--muted); font-size: 15px; }
.contact-info-list a:hover { color: var(--accent-deep); }

.contact-form {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.form-group { margin-bottom: 18px; }

.form-group label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--ink-soft);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font: inherit;
  font-size: 15px;
  color: var(--ink);
  background: var(--surface);
  transition: border-color 0.15s, background 0.15s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-deep);
  background: #fff;
}

.form-note { font-size: 13px; color: var(--muted); margin-top: 14px; }

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

.site-footer {
  background: var(--ink);
  color: rgba(255,255,255,0.75);
  padding: 64px 0 32px;
  font-size: 14.5px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255,255,255,0.14);
}

.footer-grid .brand svg { height: 30px; }

.footer-tagline { margin-top: 16px; max-width: 320px; line-height: 1.55; }

.footer-col h4 {
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  padding-top: 26px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13.5px;
  color: rgba(255,255,255,0.5);
}

/* ---------- Reveal animation ---------- */

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

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

@media (max-width: 960px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .split, .material-detail, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .material-detail img { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    gap: 18px;
    display: none;
  }
  .main-nav.open { display: flex; }
  .nav-burger { display: block; }
  .nav-cta { display: none; }
  .materials-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero { min-height: 66vh; }
  .section { padding: 64px 0; }
}

@media (max-width: 520px) {
  .stats-grid, .services-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}

/* ---------- Header: keep labels on one line (longer Turkish labels) ---------- */

.main-nav a, .nav-cta { white-space: nowrap; }

@media (max-width: 900px) {
  .nav-cta { display: none; }
}