/* ============================================================
   TEKSPYDER — Design System
   Tokens per PRD Part D2. Ink Navy / Signal Orange / Guarantee Green
   ============================================================ */

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

:root {
  --color-primary: #0B1F3A;      /* Ink Navy */
  --color-primary-rgb: 11,31,58;
  --color-accent: #FF5A1F;       /* Signal Orange */
  --color-accent-dark: #E64A12;
  --color-success: #1F9D55;      /* Guarantee Green */
  --color-secondary: #14315C;    /* Deep Blue */
  --color-surface: #F7F8FA;      /* Cloud */
  --color-border: #D8D8D8;
  --color-white: #FFFFFF;
  --color-ink-70: rgba(11,31,58,0.7);
  --color-ink-50: rgba(11,31,58,0.5);

  --font-display: 'Sora', 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;

  --space-1: 4px;  --space-2: 8px;  --space-3: 12px; --space-4: 16px;
  --space-6: 24px; --space-8: 32px; --space-12: 48px; --space-16: 64px; --space-24: 96px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow-card: 0 1px 2px rgba(11,31,58,0.06), 0 4px 16px rgba(11,31,58,0.06);
  --shadow-card-hover: 0 8px 24px rgba(11,31,58,0.14);

  --max-width: 1280px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--color-primary);
  background: var(--color-white);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; cursor: pointer; }
input, select { font: inherit; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 640px) {
  .container { padding: 0 16px; }
}

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.01em; }
h1 { font-size: 44px; line-height: 1.08; }
h2 { font-size: 28px; line-height: 1.2; }
h3 { font-size: 20px; line-height: 1.3; font-weight: 600; }
p { font-size: 16px; }
.eyebrow {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.numeric { font-variant-numeric: tabular-nums; font-weight: 700; }

@media (max-width: 640px) {
  h1 { font-size: 30px; }
  h2 { font-size: 22px; }
  h3 { font-size: 18px; }
  p { font-size: 15px; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 15px;
  border: none;
  transition: transform 150ms ease-out, box-shadow 150ms ease-out, background 150ms ease-out;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
}
.btn-primary:hover { transform: scale(1.03); box-shadow: 0 6px 20px rgba(255,90,31,0.35); background: var(--color-accent-dark); }
.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-secondary:hover { background: var(--color-primary); color: var(--color-white); }
.btn-ghost { background: transparent; color: var(--color-primary); padding: 8px 12px; }
.btn-ghost:hover { color: var(--color-accent); }
.btn-whatsapp {
  background: var(--color-success);
  color: var(--color-white);
}
.btn-whatsapp:hover { transform: scale(1.03); background: #1a8548; }
.btn-block { width: 100%; }
.micro-trust {
  display: block;
  text-align: center;
  font-size: 12px;
  color: var(--color-ink-50);
  margin-top: 8px;
}

/* ---------- Nav ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 200ms ease;
}
.site-nav.scrolled { box-shadow: 0 2px 12px rgba(11,31,58,0.08); }
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.nav-logo img { height: 44px; width: auto; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--color-primary);
  position: relative;
  padding: 8px 0;
}
.nav-links a:hover { color: var(--color-accent); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; background: none; border: none; }
.nav-toggle svg { width: 26px; height: 26px; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-cta .btn-secondary { display: none; }
}

/* mobile menu drawer */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--color-primary);
}
.mobile-menu.open { display: block; }
.mobile-menu-inner { padding: 24px; display: flex; flex-direction: column; height: 100%; }
.mobile-menu-close { align-self: flex-end; background: none; border: none; color: white; font-size: 28px; }
.mobile-menu a {
  display: block;
  color: white;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}

/* ---------- WhatsApp floating button ---------- */
.wa-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 90;
  background: var(--color-success);
  color: white;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 20px rgba(31,157,85,0.4);
}
.wa-float svg { width: 28px; height: 28px; }
.wa-float.pulse::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid var(--color-success);
  animation: pulsering 1.2s ease-out 2;
}
@keyframes pulsering {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(1.9); opacity: 0; }
}
@media (max-width: 640px) { .wa-float { bottom: 84px; } }

/* ---------- Sticky mobile bar ---------- */
.sticky-mobile-bar {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 95;
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  padding: 10px 16px;
  gap: 10px;
  box-shadow: 0 -4px 16px rgba(11,31,58,0.08);
}
@media (max-width: 640px) { .sticky-mobile-bar { display: flex; } body { padding-bottom: 70px; } }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(180deg, #0B1F3A 0%, #14315C 100%);
  color: white;
  padding: 72px 0 56px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  top: -120px; right: -120px;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,90,31,0.25), transparent 70%);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  position: relative;
}
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }
.hero h1 { color: white; margin-bottom: 16px; }
.hero h1 .accent { color: var(--color-accent); }
.hero-sub { font-size: 18px; color: rgba(255,255,255,0.82); margin-bottom: 28px; max-width: 520px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 32px; }
.trust-strip {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.16);
}
.trust-item { display: flex; align-items: center; gap: 10px; }
.trust-item .num { font-family: var(--font-display); font-size: 22px; font-weight: 700; color: var(--color-accent); }
.trust-item .label { font-size: 12.5px; color: rgba(255,255,255,0.7); }

.hero-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(6px);
}
.hero-card-row { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px dashed rgba(255,255,255,0.15); font-size: 14.5px; }
.hero-card-row:last-child { border: none; }
.hero-card-row .v { font-weight: 700; color: white; }

/* ---------- Sections ---------- */
section { padding: var(--space-24) 0; }
@media (max-width: 640px) { section { padding: var(--space-16) 0; } }
.section-head { max-width: 640px; margin-bottom: 40px; }
.section-head h2 { margin-top: 10px; }
.section-head p { margin-top: 12px; color: var(--color-ink-70); }
.section-alt { background: var(--color-surface); }

/* ---------- Stack grid ---------- */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
@media (max-width: 1024px) { .stack-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .stack-grid { grid-template-columns: repeat(2, 1fr); } }
.stack-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 18px;
  text-align: center;
  transition: transform 150ms ease-out, box-shadow 150ms ease-out, border-color 150ms;
}
.stack-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); border-color: var(--color-accent); }
.stack-card .icon { font-size: 32px; margin-bottom: 12px; }
.stack-card h3 { font-size: 15.5px; }
.stack-card .count { font-size: 12.5px; color: var(--color-ink-50); margin-top: 4px; }

/* ---------- Stat cards ---------- */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
@media (max-width: 900px) { .stat-strip { grid-template-columns: repeat(2, 1fr); } }
.stat-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--color-border);
  text-align: center;
}
.stat-card .stat-num { font-family: var(--font-display); font-size: 32px; font-weight: 700; color: var(--color-primary); }
.stat-card .stat-label { font-size: 13px; color: var(--color-ink-50); margin-top: 6px; }
.stat-card .stat-asof { font-size: 11px; color: var(--color-ink-50); margin-top: 4px; }
.partner-logos { display: flex; flex-wrap: wrap; gap: 28px; align-items: center; justify-content: center; margin-top: 40px; opacity: 0.75; }
.partner-logos span { font-family: var(--font-display); font-weight: 700; font-size: 17px; color: var(--color-ink-50); }

/* ---------- Comparison table ---------- */
.compare-table-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--color-border); }
table.compare-table { width: 100%; border-collapse: collapse; background: white; min-width: 560px; }
table.compare-table th, table.compare-table td { padding: 16px 20px; text-align: left; font-size: 14.5px; border-bottom: 1px solid var(--color-border); }
table.compare-table thead th { background: var(--color-primary); color: white; font-family: var(--font-display); font-size: 15px; }
table.compare-table th.attr-col { background: var(--color-surface); color: var(--color-primary); font-weight: 600; width: 220px; }
table.compare-table tbody tr:hover { background: var(--color-surface); }
table.compare-table td.premium-col { background: rgba(31,157,85,0.05); font-weight: 600; }
.star { color: var(--color-accent); }

/* ---------- Testimonials ---------- */
.testimonial-track { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .testimonial-track { grid-template-columns: 1fr; } }
.testimonial-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.testimonial-card .stars { color: var(--color-accent); font-size: 14px; margin-bottom: 10px; }
.testimonial-card p.quote { font-size: 15px; color: var(--color-ink-70); margin-bottom: 16px; }
.testimonial-foot { display: flex; align-items: center; gap: 12px; }
.avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--color-secondary); color: white; display: flex; align-items: center; justify-content: center; font-weight: 700; font-family: var(--font-display); }
.verified-badge { font-size: 11px; color: var(--color-success); font-weight: 600; }

/* ---------- Fee transparency ---------- */
.pay-options { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .pay-options { grid-template-columns: 1fr; } }
.pay-card { background: white; border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 24px; }
.pay-card .tag { display: inline-block; background: var(--color-surface); color: var(--color-secondary); font-size: 11.5px; font-weight: 700; padding: 4px 10px; border-radius: 100px; margin-bottom: 12px; }

/* ---------- Guarantee badge ---------- */
.guarantee-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(31,157,85,0.1);
  color: var(--color-success);
  border: 1px solid rgba(31,157,85,0.3);
  padding: 8px 14px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
}

/* ---------- Course card ---------- */
.course-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .course-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .course-grid { grid-template-columns: 1fr; } }
.course-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 22px;
  transition: transform 150ms ease-out, box-shadow 150ms ease-out;
  position: relative;
}
.course-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.course-card .stack-tag { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-secondary); }
.course-card h3 { margin: 8px 0 10px; }
.course-card .batch-tag {
  position: absolute; top: 18px; right: 18px;
  font-size: 10.5px; font-weight: 700; color: var(--color-accent);
  background: rgba(255,90,31,0.1); padding: 3px 8px; border-radius: 100px;
}
.course-card ul.meta { display: flex; flex-direction: column; gap: 6px; margin: 12px 0 18px; font-size: 13px; color: var(--color-ink-70); }

/* ---------- Filter bar ---------- */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 28px; }
.filter-chip {
  padding: 8px 16px; border-radius: 100px; border: 1.5px solid var(--color-border);
  font-size: 13.5px; font-weight: 600; background: white; color: var(--color-ink-70);
}
.filter-chip.active { background: var(--color-primary); color: white; border-color: var(--color-primary); }

/* ---------- Curriculum accordion ---------- */
.accordion-item { border-bottom: 1px solid var(--color-border); }
.accordion-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 4px; width: 100%; background: none; border: none; text-align: left; cursor: pointer;
}
.accordion-header .month-label { font-family: var(--font-display); font-weight: 700; font-size: 15px; }
.accordion-header .month-sub { font-size: 13px; color: var(--color-ink-50); font-weight: 400; margin-top: 2px; }
.accordion-header .chevron { transition: transform 220ms ease-in-out; flex-shrink: 0; margin-left: 12px; }
.accordion-item.open .chevron { transform: rotate(180deg); }
.accordion-body { max-height: 0; overflow: hidden; transition: max-height 220ms ease-in-out; }
.accordion-item.open .accordion-body { max-height: 300px; }
.accordion-body-inner { padding: 0 4px 18px; font-size: 14.5px; color: var(--color-ink-70); }

/* ---------- Programme toggle ---------- */
.toggle-group {
  display: inline-flex;
  background: var(--color-surface);
  border-radius: 100px;
  padding: 4px;
  border: 1px solid var(--color-border);
}
.toggle-btn {
  padding: 10px 22px;
  border-radius: 100px;
  border: none;
  background: transparent;
  font-weight: 700;
  font-size: 14px;
  color: var(--color-ink-70);
  transition: background 200ms ease-in-out, color 200ms ease-in-out;
}
.toggle-btn.active { background: var(--color-primary); color: white; }

/* ---------- Course hero / stat row ---------- */
.course-hero { background: var(--color-surface); padding: 40px 0; border-bottom: 1px solid var(--color-border); }
.breadcrumb { font-size: 13px; color: var(--color-ink-50); margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--color-accent); }
.course-hero-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.course-hero-title { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 10px; }
.stat-row { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; margin-top: 28px; }
@media (max-width: 900px) { .stat-row { grid-template-columns: repeat(2,1fr); } }
.stat-row .item { background: white; border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 16px; text-align: center; }
.stat-row .item .v { font-family: var(--font-display); font-weight: 700; font-size: 20px; }
.stat-row .item .l { font-size: 11.5px; color: var(--color-ink-50); margin-top: 4px; }

/* ---------- Two column layout with sticky fee card ---------- */
.two-col { display: grid; grid-template-columns: 1fr 340px; gap: 40px; align-items: start; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }
.fee-summary-card {
  position: sticky; top: 96px;
  background: white; border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  padding: 24px; box-shadow: var(--shadow-card);
}
.fee-summary-card .price { font-family: var(--font-display); font-size: 30px; font-weight: 700; color: var(--color-primary); margin: 6px 0 4px; }
.fee-summary-card .price-note { font-size: 12.5px; color: var(--color-ink-50); margin-bottom: 18px; }

/* ---------- Fee breakdown table ---------- */
.breakdown-row { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px dashed var(--color-border); font-size: 14.5px; }
.breakdown-row.total { border-top: 2px solid var(--color-primary); border-bottom: none; padding-top: 14px; margin-top: 6px; font-weight: 700; font-size: 17px; }
.breakdown-row .discount { color: var(--color-success); font-weight: 600; }
.breakdown-row.animate-in { animation: slideDown 300ms ease-out; }
@keyframes slideDown { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }

/* ---------- Forms ---------- */
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--color-primary); }
.field input, .field select {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--color-border); border-radius: var(--radius-sm);
  font-size: 15px; transition: border-color 150ms ease;
}
.field input:focus, .field select:focus { outline: none; border-color: var(--color-accent); }
.toggle-row { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--color-border); }
.switch { position: relative; width: 44px; height: 26px; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch .slider { position: absolute; inset: 0; background: var(--color-border); border-radius: 100px; transition: background 200ms; }
.switch .slider::before { content: ''; position: absolute; width: 20px; height: 20px; left: 3px; top: 3px; background: white; border-radius: 50%; transition: transform 200ms; }
.switch input:checked + .slider { background: var(--color-success); }
.switch input:checked + .slider::before { transform: translateX(18px); }

/* ---------- Lead card ---------- */
.lead-card {
  background: white; border-radius: var(--radius-lg); border: 1px solid var(--color-border);
  padding: 28px; box-shadow: var(--shadow-card); max-width: 420px;
}
.step-wrap { overflow: hidden; }
.step { transition: transform 250ms ease-in-out, opacity 250ms ease-in-out; }

/* ---------- FAQ ---------- */
.faq-grid { max-width: 760px; margin: 0 auto; }

/* ---------- Footer ---------- */
footer { background: var(--color-primary); color: rgba(255,255,255,0.75); padding: 56px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 32px; margin-bottom: 40px; }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid h4 { color: white; font-size: 14px; margin-bottom: 14px; }
.footer-grid a, .footer-grid p { font-size: 13.5px; display: block; margin-bottom: 10px; color: rgba(255,255,255,0.65); }
.footer-grid a:hover { color: var(--color-accent); }
.footer-logo img { height: 38px; margin-bottom: 14px; filter: brightness(0) invert(1); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.15); padding-top: 22px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 12.5px; }

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.mt-8 { margin-top: 32px; }
.mb-24 { margin-bottom: 24px; }
.badge-elite { color: var(--color-secondary); background: rgba(20,49,92,0.08); padding: 3px 10px; border-radius: 100px; font-size: 11.5px; font-weight: 700; }
.badge-premium { color: var(--color-success); background: rgba(31,157,85,0.08); padding: 3px 10px; border-radius: 100px; font-size: 11.5px; font-weight: 700; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; top: 20px; right: 20px; z-index: 300;
  background: var(--color-primary); color: white; padding: 14px 20px; border-radius: var(--radius-md);
  box-shadow: var(--shadow-card-hover); font-size: 14px; font-weight: 600;
  transform: translateX(120%); transition: transform 200ms ease-in-out;
}
.toast.show { transform: translateX(0); }
@media (max-width: 640px) { .toast { top: auto; bottom: 90px; right: 16px; left: 16px; } }

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(11,31,58,0.6); z-index: 250;
  display: none; align-items: center; justify-content: center; padding: 20px;
  opacity: 0; transition: opacity 200ms ease-out;
}
.modal-backdrop.show { display: flex; opacity: 1; }
.modal-box {
  background: white; border-radius: var(--radius-lg); padding: 32px; max-width: 440px; width: 100%;
  transform: scale(0.95); transition: transform 200ms ease-out;
}
.modal-backdrop.show .modal-box { transform: scale(1); }
.modal-close { float: right; background: none; border: none; font-size: 20px; color: var(--color-ink-50); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}