/* ===== Tuhitech — base styles ===== */
:root {
  --bg: #0a0f1c;
  --bg-alt: #0e1526;
  --surface: #111a2e;
  --surface-alt: #16213a;
  --border: #22304d;
  --text: #e7ecf5;
  --text-muted: #9aa7c2;
  --accent: #21d4c4;
  --accent-2: #3b82f6;
  --accent-soft: rgba(33, 212, 196, 0.12);
  --warn: #f5b942;
  --radius: 10px;
  --max-width: 1180px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul { list-style: none; }

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

h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 4vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.25rem; }
p { color: var(--text-muted); }

section { padding: 88px 0; }
@media (max-width: 720px) { section { padding: 56px 0; } }

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.section-head { max-width: 700px; margin-bottom: 48px; }
.section-head p { margin-top: 12px; font-size: 1.05rem; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #051018;
}
.btn-primary:hover { filter: brightness(1.08); }

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

.btn-block { width: 100%; justify-content: center; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 15, 28, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text);
}
.logo-img {
  height: 76px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.15s ease;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); }
.nav-links a[aria-current="page"] { color: var(--accent); }

.nav-actions { display: flex; align-items: center; gap: 18px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  min-width: 44px;
  min-height: 44px;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--text); display: block; }

.nav-links .mobile-cta { display: none; }

@media (max-width: 880px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 20px 24px;
    gap: 4px;
    max-height: calc(100vh - 100%);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    padding: 12px 4px;
    border-bottom: 1px solid var(--border);
    width: 100%;
  }
  .nav-links a:last-of-type { border-bottom: none; }
  .nav-actions .btn-outline { display: none; }
  .nav-links .mobile-cta {
    display: inline-flex;
    justify-content: center;
    margin-top: 14px;
    border-bottom: none;
  }
}

/* ===== Hero ===== */
.hero {
  padding: 100px 0 80px;
  background:
    radial-gradient(circle at 15% 20%, rgba(33, 212, 196, 0.14), transparent 45%),
    radial-gradient(circle at 85% 0%, rgba(59, 130, 246, 0.16), transparent 45%);
  border-bottom: 1px solid var(--border);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }

.hero h1 { margin-bottom: 20px; }
.hero .lead { font-size: 1.15rem; margin-bottom: 32px; max-width: 540px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 40px; }

.hero-stats { display: flex; gap: 32px; flex-wrap: wrap; }
.hero-stats div strong { display: block; font-size: 1.6rem; color: var(--accent); }
.hero-stats div span { font-size: 0.85rem; color: var(--text-muted); }
@media (max-width: 480px) {
  .hero-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
}

.hero-visual {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}
.hero-visual .visual-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 0.9rem;
}
.hero-visual .visual-row:last-child { border-bottom: none; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; margin-right: 8px; }
.status-dot.ok { background: var(--accent); }
.status-dot.warn { background: var(--warn); }

/* small page hero (non-home pages) */
.page-hero {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--border);
  background: radial-gradient(circle at 20% 0%, rgba(33, 212, 196, 0.12), transparent 50%);
}
.page-hero p { max-width: 640px; font-size: 1.05rem; margin-top: 14px; }
.breadcrumb { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--accent); }

/* ===== Cards / grids ===== */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; } }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-3px); }

.card .icon {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 18px;
}
.card h3 { margin-bottom: 10px; }
.card p { font-size: 0.95rem; }
.card a.card-link { display: inline-block; margin-top: 14px; color: var(--accent); font-size: 0.9rem; font-weight: 600; }

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

/* ===== Feature list ===== */
.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  color: var(--text);
}
.check-list li::before {
  content: "✓";
  color: var(--accent);
  font-weight: 800;
  background: var(--accent-soft);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ===== Framework badges ===== */
.badge-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.badge {
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* ===== Steps / process ===== */
.steps { counter-reset: step; }
.step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  padding: 26px 0;
  border-bottom: 1px solid var(--border);
}
.step:last-child { border-bottom: none; }
.step-num {
  counter-increment: step;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--accent);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}
.step-num::before { content: counter(step, decimal-leading-zero); }
.step h3 { margin-bottom: 6px; }

/* ===== Table ===== */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; min-width: 640px; }
th, td { text-align: left; padding: 16px 18px; border-bottom: 1px solid var(--border); font-size: 0.92rem; }
th { background: var(--surface-alt); color: var(--text); text-transform: uppercase; font-size: 0.75rem; letter-spacing: 0.05em; }
td { color: var(--text-muted); }
tr:last-child td { border-bottom: none; }

/* ===== CTA banner ===== */
.cta-banner {
  background: linear-gradient(135deg, rgba(33, 212, 196, 0.15), rgba(59, 130, 246, 0.15));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.cta-banner h2 { margin-bottom: 8px; }
@media (max-width: 640px) {
  .cta-banner { padding: 32px 24px; flex-direction: column; text-align: center; }
  .cta-banner .btn { width: 100%; justify-content: center; }
}

/* ===== Forms ===== */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px; }
.field.full { grid-column: 1 / -1; }
label { font-size: 0.85rem; font-weight: 600; color: var(--text); }
input, select, textarea {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
textarea { resize: vertical; min-height: 120px; }

/* ===== Contact info cards ===== */
.contact-info-item {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.contact-info-item:last-child { border-bottom: none; }
.contact-info-item .icon {
  width: 42px; height: 42px; border-radius: 8px;
  background: var(--accent-soft); color: var(--accent);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
@media (max-width: 780px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h4 { margin-bottom: 18px; font-size: 0.95rem; }
.footer-grid ul li { margin-bottom: 10px; }
.footer-grid ul li a { color: var(--text-muted); font-size: 0.9rem; }
.footer-grid ul li a:hover { color: var(--accent); }
.footer-brand p { margin: 14px 0 18px; font-size: 0.9rem; max-width: 280px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--text-muted);
}
.footer-bottom a:hover { color: var(--accent); }

/* ===== Utilities ===== */
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }
.text-center { text-align: center; }