/* ==========================================================================
   InfraLab Academy — asosiy stil fayli
   ========================================================================== */

:root {
  --navy-950: #060b16;
  --navy-900: #0b1220;
  --navy-800: #101a2e;
  --navy-700: #182544;
  --navy-600: #24345c;
  --cyan-300: #67e8f9;
  --cyan-400: #22d3ee;
  --cyan-500: #06b6d4;
  --amber-400: #fbbf24;
  --amber-500: #f59e0b;
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --white: #ffffff;
  --success-500: #22c55e;

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 10px rgba(6, 11, 22, 0.06);
  --shadow: 0 12px 30px rgba(6, 11, 22, 0.10);
  --shadow-lg: 0 24px 60px rgba(6, 11, 22, 0.18);
  --maxw: 1180px;
  --font: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--slate-700);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4 { color: var(--navy-900); line-height: 1.2; margin: 0 0 .5em; }
p { margin: 0 0 1em; }

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

.section {
  padding: 88px 0;
}
.section--tight { padding: 56px 0; }
.section--alt { background: var(--slate-50); }
.section--dark {
  background: radial-gradient(1100px 500px at 15% -10%, #0e2a44 0%, transparent 60%),
              linear-gradient(180deg, var(--navy-950), var(--navy-900));
  color: var(--slate-300);
}
.section--dark h1, .section--dark h2, .section--dark h3 { color: var(--white); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--cyan-500);
  background: rgba(6, 182, 212, .1);
  border: 1px solid rgba(6, 182, 212, .25);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.section--dark .eyebrow {
  color: var(--cyan-300);
  background: rgba(103, 232, 249, .08);
  border-color: rgba(103, 232, 249, .25);
}

.section-head {
  max-width: 680px;
  margin: 0 auto 48px;
  text-align: center;
}
.section-head h2 { font-size: clamp(1.7rem, 2.6vw, 2.4rem); }
.section-head p { color: var(--slate-500); font-size: 1.05rem; }
.section--dark .section-head p { color: var(--slate-400); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: .95rem;
  padding: 13px 26px;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--cyan-400), var(--cyan-500));
  color: var(--navy-950);
  box-shadow: 0 8px 20px rgba(6, 182, 212, .35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(6, 182, 212, .45); }
.btn-ghost {
  background: transparent;
  border-color: rgba(148, 163, 184, .4);
  color: var(--slate-200);
}
.btn-ghost:hover { border-color: var(--cyan-400); color: var(--cyan-300); }
.btn-outline {
  background: transparent;
  border-color: var(--slate-300);
  color: var(--navy-800);
}
.btn-outline:hover { border-color: var(--cyan-500); color: var(--cyan-500); }
.btn-block { width: 100%; }
.btn-sm { padding: 9px 16px; font-size: .85rem; }

/* ---------- Header / Nav ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 11, 22, .85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(148, 163, 184, .12);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--white);
  letter-spacing: -.02em;
}
.brand-mark {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--cyan-400), #6366f1);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--navy-950);
  font-size: .95rem;
}
.brand span { color: var(--cyan-300); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-links a {
  color: var(--slate-300);
  font-size: .93rem;
  font-weight: 500;
  transition: color .15s ease;
  position: relative;
}
.nav-links a:hover { color: var(--white); }
.nav-links a.active { color: var(--cyan-300); }

.nav-actions { display: flex; align-items: center; gap: 14px; }

.lang-switch {
  display: flex;
  align-items: center;
  gap: 2px;
  font-family: var(--font-mono);
}
.lang-switch a, .lang-switch span {
  padding: 5px 8px;
  border-radius: 6px;
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--slate-400);
}
.lang-switch a:hover { color: var(--white); background: rgba(255, 255, 255, .08); }
.lang-switch span.active { color: var(--navy-950); background: var(--cyan-400); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--white); border-radius: 2px; }

/* ---------- Hero ---------- */
.hero {
  padding: 80px 0 100px;
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 56px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  letter-spacing: -.02em;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--cyan-300), #a78bfa);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lede { font-size: 1.12rem; color: var(--slate-400); max-width: 540px; }
.hero-cta { display: flex; gap: 14px; margin: 30px 0 36px; flex-wrap: wrap; }

.hero-stats {
  display: flex;
  gap: 34px;
  flex-wrap: wrap;
}
.hero-stats .stat b {
  display: block;
  font-size: 1.7rem;
  color: var(--white);
  font-family: var(--font-mono);
}
.hero-stats .stat span { font-size: .82rem; color: var(--slate-400); }

.hero-panel {
  background: linear-gradient(160deg, var(--navy-800), var(--navy-700));
  border: 1px solid rgba(148, 163, 184, .18);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-lg);
}
.hero-panel-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}
.hero-panel-head i {
  width: 11px; height: 11px; border-radius: 50%;
}
.hero-panel-head i:nth-child(1) { background: #ef4444; }
.hero-panel-head i:nth-child(2) { background: #f59e0b; }
.hero-panel-head i:nth-child(3) { background: #22c55e; }
.hero-panel pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .85rem;
  line-height: 1.85;
  color: var(--slate-300);
  overflow-x: auto;
}
.hero-panel pre .c1 { color: var(--cyan-300); }
.hero-panel pre .c2 { color: var(--amber-400); }
.hero-panel pre .c3 { color: #34d399; }
.hero-panel pre .c4 { color: var(--slate-500); }

/* ---------- Logos strip ---------- */
.logos-strip {
  padding: 34px 0;
  border-top: 1px solid var(--slate-200);
  border-bottom: 1px solid var(--slate-200);
}
.logos-strip p {
  text-align: center;
  font-size: .8rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--slate-400);
  margin-bottom: 20px;
}
.logos-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 42px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--slate-400);
  font-size: 1.05rem;
  letter-spacing: .02em;
}
.logos-row span { opacity: .8; }

/* ---------- Course cards ---------- */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.course-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.course-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.course-icon {
  width: 52px; height: 52px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  margin-bottom: 18px;
  background: var(--navy-900);
}
.course-card h3 { font-size: 1.2rem; margin-bottom: 8px; }
.course-card .course-desc { color: var(--slate-500); font-size: .93rem; flex-grow: 1; }
.course-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 16px 0;
  font-size: .78rem;
  font-family: var(--font-mono);
}
.tag {
  background: var(--slate-100);
  color: var(--slate-600);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--slate-200);
}
.course-card .course-link {
  font-weight: 700;
  font-size: .9rem;
  color: var(--cyan-500);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
}
.course-card .course-link .arrow { transition: transform .15s ease; }
.course-card:hover .course-link .arrow { transform: translateX(4px); }

/* ---------- Feature list ---------- */
.feature {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.feature-icon {
  flex: none;
  width: 44px; height: 44px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: rgba(6, 182, 212, .1);
  color: var(--cyan-500);
  font-size: 1.2rem;
}
.feature h4 { font-size: 1.02rem; margin-bottom: 4px; }
.feature p { color: var(--slate-500); font-size: .92rem; margin-bottom: 0; }

/* ---------- Stats band ---------- */
.stats-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stats-band .num {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--white);
}
.stats-band .lbl { color: var(--slate-400); font-size: .88rem; margin-top: 4px; }

/* ---------- Path / roadmap ---------- */
.path {
  display: flex;
  align-items: stretch;
  gap: 0;
  flex-wrap: wrap;
}
.path-step {
  flex: 1 1 200px;
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 22px 20px;
  position: relative;
}
.path-step .step-no {
  font-family: var(--font-mono);
  color: var(--cyan-500);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .06em;
}
.path-step h4 { margin: 8px 0 6px; font-size: 1.02rem; }
.path-step p { font-size: .87rem; color: var(--slate-500); margin: 0; }
.path-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--slate-300);
  font-size: 1.4rem;
  padding: 0 6px;
}

/* ---------- Accordion (modules) ---------- */
.accordion { border-top: 1px solid var(--slate-200); }
.acc-item { border-bottom: 1px solid var(--slate-200); }
.acc-head {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: none;
  border: none;
  text-align: left;
  padding: 20px 4px;
  cursor: pointer;
  font-family: var(--font);
}
.acc-head .acc-title {
  display: flex;
  align-items: center;
  gap: 14px;
  font-weight: 700;
  color: var(--navy-900);
  font-size: 1rem;
}
.acc-head .acc-no {
  font-family: var(--font-mono);
  color: var(--cyan-500);
  background: rgba(6, 182, 212, .1);
  width: 30px; height: 30px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: .85rem;
  flex: none;
}
.acc-head .acc-plus {
  font-size: 1.3rem;
  color: var(--slate-400);
  transition: transform .2s ease;
  flex: none;
}
.acc-item.open .acc-plus { transform: rotate(45deg); color: var(--cyan-500); }
.acc-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .28s ease;
}
.acc-item.open .acc-body { max-height: 1400px; }
.acc-body-inner { padding: 0 4px 22px 58px; }
.acc-body ul { display: grid; gap: 10px; }
.acc-body li {
  font-size: .92rem;
  color: var(--slate-600);
  position: relative;
  padding-left: 18px;
}
.acc-body li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan-400);
}

/* ---------- Cert badges ---------- */
.cert-list { display: flex; flex-wrap: wrap; gap: 12px; }
.cert-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: 999px;
  padding: 9px 18px 9px 10px;
  font-size: .88rem;
  font-weight: 600;
  color: var(--navy-800);
  box-shadow: var(--shadow-sm);
}
.cert-badge .rank {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--navy-900);
  color: var(--cyan-300);
  font-family: var(--font-mono);
  font-size: .74rem;
  display: grid;
  place-items: center;
  flex: none;
}

/* ---------- Course hero (detail pages) ---------- */
.course-hero {
  padding: 56px 0 64px;
}
.course-hero-top {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 22px;
}
.course-hero-top .course-icon { margin-bottom: 0; width: 60px; height: 60px; font-size: 1.7rem; }
.breadcrumb {
  font-size: .82rem;
  color: var(--slate-400);
  margin-bottom: 18px;
}
.breadcrumb a:hover { color: var(--cyan-300); }
.info-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}
.info-chip {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(148,163,184,.2);
  border-radius: 10px;
  padding: 12px 18px;
  min-width: 140px;
}
.info-chip b { display: block; color: var(--white); font-size: .95rem; }
.info-chip span { font-size: .76rem; color: var(--slate-400); text-transform: uppercase; letter-spacing: .05em; }
.prereq-box {
  margin-top: 24px;
  background: rgba(251, 191, 36, .08);
  border: 1px solid rgba(251, 191, 36, .3);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: .92rem;
  color: var(--slate-300);
  display: flex;
  gap: 12px;
}
.prereq-box b { color: var(--amber-400); }

/* ---------- Final project box ---------- */
.project-box {
  background: linear-gradient(160deg, var(--navy-900), var(--navy-800));
  border-radius: var(--radius-lg);
  padding: 40px;
  color: var(--slate-300);
}
.project-box h3 { color: var(--white); }
.project-box .tag { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.15); color: var(--cyan-300); }

/* ---------- Timeline (career path on home) ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

/* ---------- FAQ ---------- */
.faq-item { border-bottom: 1px solid var(--slate-200); }

/* ---------- CTA band ---------- */
.cta-band {
  border-radius: var(--radius-lg);
  padding: 56px;
  background: linear-gradient(135deg, var(--navy-950), #0e2a44 60%, var(--navy-900));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  color: var(--white);
}
.cta-band h3 { color: var(--white); font-size: 1.6rem; margin-bottom: 6px; }
.cta-band p { color: var(--slate-400); margin: 0; }

/* ---------- Footer ---------- */
.footer {
  background: var(--navy-950);
  color: var(--slate-400);
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(148,163,184,.15);
}
.footer h5 {
  color: var(--white);
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 18px;
}
.footer ul li { margin-bottom: 11px; font-size: .9rem; }
.footer ul li a:hover { color: var(--cyan-300); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: .82rem;
  flex-wrap: wrap;
  gap: 10px;
}
.socials { display: flex; gap: 10px; }
.socials a {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  display: grid;
  place-items: center;
  font-size: .85rem;
}
.socials a:hover { background: var(--cyan-500); color: var(--navy-950); }

/* ---------- Contact page ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 48px;
}
.form-field { margin-bottom: 18px; }
.form-field label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  color: var(--navy-800);
  margin-bottom: 6px;
}
.form-field input, .form-field select, .form-field textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--slate-300);
  font-family: var(--font);
  font-size: .94rem;
  color: var(--navy-900);
  background: var(--white);
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: none;
  border-color: var(--cyan-500);
  box-shadow: 0 0 0 3px rgba(6,182,212,.15);
}
.form-note { font-size: .8rem; color: var(--slate-400); margin-top: 10px; }
.contact-card {
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin-bottom: 16px;
}
.contact-card b { display: block; color: var(--navy-900); margin-bottom: 4px; }
.map-box {
  margin-top: 20px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--slate-200);
  height: 220px;
}
.map-box iframe { width: 100%; height: 100%; border: 0; }

/* ---------- Utility ---------- */
.mt-0 { margin-top: 0; }
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .stats-band { grid-template-columns: repeat(2, 1fr); }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-panel { order: -1; }
  .two-col { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-actions .btn-ghost { display: none; }
  .section { padding: 60px 0; }
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .stats-band { grid-template-columns: repeat(2, 1fr); }
  .path { flex-direction: column; }
  .path-arrow { transform: rotate(90deg); padding: 6px 0; }
  .cta-band { flex-direction: column; text-align: center; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .acc-body-inner { padding-left: 20px; }
}

/* ---------- Mobile nav drawer ---------- */
.nav-links.open {
  display: flex;
  position: absolute;
  top: 100%; left: 0; right: 0;
  background: var(--navy-950);
  flex-direction: column;
  padding: 20px 24px 28px;
  gap: 20px;
  border-bottom: 1px solid rgba(148,163,184,.15);
}