/* ==========================================================
   SECUROZEN — DESIGN SYSTEM
   Theme: Light Red + Black. Accent red, near-black anchor,
   white/light-gray surfaces. Inter for UI, restrained motion.
   ========================================================== */

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

:root {
  /* Color tokens */
  --color-red:        #E4483C;   /* primary accent */
  --color-red-dark:   #B83228;   /* hover/active */
  --color-red-tint:   #FDEDEB;   /* soft red surface */
  --color-black:      #0B0B0D;   /* main dark anchor */
  --color-panel-dark: #111216;   /* dashboard panels */
  --color-bg:         #F7F7F8;   /* light page background */
  --color-surface:    #FFFFFF;   /* cards */
  --color-border:     #E7E7EA;
  --color-text:       #17181C;
  --color-text-muted: #5B5D66;
  --color-text-inverse: #F4F4F5;
  --color-success:    #1C8A5A;
  --color-warning:    #B8791A;
  --color-danger:     #C43A2E;
  --color-info:       #2563A6;

  /* Type */
  --font-display: 'Manrope', 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Shape */
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --shadow-card: 0 1px 2px rgba(11,11,13,0.04), 0 8px 24px rgba(11,11,13,0.06);
  --shadow-elevated: 0 12px 32px rgba(11,11,13,0.14);

  --container-width: 1160px;
}

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

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

p { margin: 0 0 1em; color: var(--color-text-muted); }
a { color: inherit; text-decoration: none; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 1000;
  background: var(--color-black); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

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

/* Focus visibility (accessibility requirement) */
a:focus-visible, button:focus-visible, input:focus-visible,
textarea:focus-visible, select:focus-visible {
  outline: 3px solid var(--color-red);
  outline-offset: 2px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color .15s ease, transform .15s ease, border-color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--color-red); color: #fff; }
.btn-primary:hover { background: var(--color-red-dark); }
.btn-dark { background: var(--color-black); color: #fff; }
.btn-dark:hover { background: #1c1d21; }
.btn-ghost { background: transparent; color: var(--color-black); border-color: var(--color-border); }
.btn-ghost:hover { border-color: var(--color-black); }
.btn-block { width: 100%; }
.btn-sm { padding: 8px 14px; font-size: 0.85rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(247,247,248,0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 76px;
}
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 800; font-size: 1.15rem; color: var(--color-black); }
.brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 10px;
  background: var(--color-black); color: var(--color-red);
  font-family: var(--font-display); font-weight: 800; font-size: 0.85rem;
}
.main-nav { display: flex; gap: 28px; }
.main-nav a { font-size: 0.92rem; font-weight: 500; color: var(--color-text-muted); }
.main-nav a:hover { color: var(--color-black); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; }

@media (max-width: 900px) {
  .main-nav {
    position: fixed; inset: 76px 0 auto 0; background: var(--color-surface);
    flex-direction: column; padding: 20px 24px; gap: 18px;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: all .2s ease;
  }
  .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-toggle {
    display: flex; flex-direction: column; gap: 4px;
    background: none; border: none; padding: 8px; cursor: pointer;
  }
  .nav-toggle span { width: 22px; height: 2px; background: var(--color-black); }
  .header-actions .btn-ghost { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  background: var(--color-black);
  color: var(--color-text-inverse);
  padding: 96px 0 110px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute; right: -120px; top: -120px;
  width: 420px; height: 420px; border-radius: 50%;
  background: radial-gradient(circle, rgba(228,72,60,0.35), transparent 70%);
}
.hero-inner { position: relative; max-width: 680px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(228,72,60,0.14); color: #FF8177;
  padding: 6px 14px; border-radius: 999px;
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.02em;
  margin-bottom: 20px;
}
.hero h1 { color: #fff; font-size: clamp(2.1rem, 4vw, 3.1rem); margin-bottom: 20px; }
.hero p.lead { color: #C7C8CE; font-size: 1.1rem; max-width: 560px; }
.hero-ctas { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }

.metric-strip {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-elevated);
  padding: 28px;
  margin-top: -56px;
  position: relative; z-index: 5;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.metric-strip .metric { text-align: center; }
.metric .metric-value { font-family: var(--font-display); font-weight: 800; font-size: 1.8rem; color: var(--color-red); }
.metric .metric-label { font-size: 0.82rem; color: var(--color-text-muted); }
@media (max-width: 800px) { .metric-strip { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Sections ---------- */
.section { padding: 88px 0; }
.section-alt { background: var(--color-surface); }
.section-head { max-width: 620px; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
.section-head .eyebrow-plain { color: var(--color-red); font-weight: 700; font-size: 0.85rem; letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 10px; display: block; }

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

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 26px;
  transition: transform .15s ease, box-shadow .15s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-elevated); }

.program-card .badge-row { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.program-card h3 { font-size: 1.15rem; margin-bottom: 8px; }
.program-card .meta { display: flex; gap: 14px; font-size: 0.82rem; color: var(--color-text-muted); margin: 14px 0; flex-wrap: wrap; }

/* ---------- Badges ---------- */
.badge {
  display: inline-flex; align-items: center;
  padding: 4px 11px; border-radius: 999px;
  font-size: 0.74rem; font-weight: 600;
}
.badge-neutral { background: #EEEEF0; color: #45464C; }
.badge-info { background: #E6F0FA; color: var(--color-info); }
.badge-warning { background: #FBF0DE; color: var(--color-warning); }
.badge-success { background: #E4F5EC; color: var(--color-success); }
.badge-danger { background: var(--color-red-tint); color: var(--color-danger); }
.badge-featured { background: var(--color-black); color: var(--color-red); }

/* ---------- How it works ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }
.step { text-align: left; }
.step .step-index {
  font-family: var(--font-display); font-weight: 800; color: var(--color-red);
  font-size: 1.4rem; margin-bottom: 8px;
}
.step h4 { font-size: 1rem; }
.step p { font-size: 0.88rem; }

/* ---------- Forms ---------- */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 600; font-size: 0.88rem; margin-bottom: 6px; color: var(--color-black); }
.form-group .hint { font-size: 0.78rem; color: var(--color-text-muted); margin-top: 4px; }
.form-control {
  width: 100%; padding: 12px 14px;
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  font-family: var(--font-body); font-size: 0.95rem;
  background: var(--color-surface); color: var(--color-text);
}
.form-control:focus { border-color: var(--color-red); }
.form-control.has-error { border-color: var(--color-danger); }
.field-error { color: var(--color-danger); font-size: 0.8rem; margin-top: 6px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }

.stepper { display: flex; gap: 8px; margin-bottom: 36px; }
.stepper .step-dot {
  flex: 1; height: 4px; border-radius: 2px; background: var(--color-border);
}
.stepper .step-dot.active, .stepper .step-dot.done { background: var(--color-red); }

/* ---------- Alerts / toasts ---------- */
.alert { padding: 14px 18px; border-radius: var(--radius-sm); margin-bottom: 20px; font-size: 0.9rem; }
.alert-success { background: #E4F5EC; color: var(--color-success); }
.alert-error { background: var(--color-red-tint); color: var(--color-danger); }
.alert-info { background: #E6F0FA; color: var(--color-info); }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--color-border); border-radius: var(--radius-md); }
table.data-table { width: 100%; border-collapse: collapse; background: var(--color-surface); }
table.data-table th, table.data-table td {
  text-align: left; padding: 14px 16px; font-size: 0.88rem; border-bottom: 1px solid var(--color-border);
}
table.data-table th { color: var(--color-text-muted); font-weight: 600; background: #FAFAFB; }
table.data-table tr:last-child td { border-bottom: none; }

/* ---------- Empty states ---------- */
.empty-state { text-align: center; padding: 60px 20px; color: var(--color-text-muted); }
.empty-state h3 { color: var(--color-black); margin-bottom: 8px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-black); color: #B9BABF; padding: 72px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 48px; }
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-brand { display: flex; flex-direction: column; gap: 10px; }
.footer-brand .brand-mark { background: var(--color-red); color: var(--color-black); }
.footer-brand .brand-name { font-family: var(--font-display); font-weight: 800; color: #fff; }
.footer-col h4 { color: #fff; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 14px; }
.footer-col a { display: block; font-size: 0.88rem; margin-bottom: 10px; color: #B9BABF; }
.footer-col a:hover { color: var(--color-red); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  border-top: 1px solid #232327; padding-top: 24px; font-size: 0.82rem;
}
.footer-social { display: flex; gap: 18px; }

/* ---------- Certificate verify ---------- */
.verify-result {
  border-radius: var(--radius-lg); padding: 32px; margin-top: 24px;
  border: 1px solid var(--color-border); background: var(--color-surface);
}
.verify-result.valid { border-color: var(--color-success); }
.verify-result.invalid { border-color: var(--color-danger); }

/* ---------- Dashboard shell (student/mentor/admin) ---------- */
.dash-shell { display: flex; min-height: 100vh; background: var(--color-bg); }
.dash-sidebar {
  width: 250px; flex-shrink: 0; background: var(--color-black); color: #C7C8CE;
  padding: 24px 16px; position: sticky; top: 0; height: 100vh; overflow-y: auto;
}
.dash-sidebar .brand { color: #fff; padding: 0 10px 24px; }
.dash-sidebar nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 14px; border-radius: var(--radius-sm);
  font-size: 0.9rem; margin-bottom: 4px; color: #C7C8CE;
}
.dash-sidebar nav a:hover { background: rgba(255,255,255,0.06); color: #fff; }
.dash-sidebar nav a.active { background: var(--color-red); color: #fff; }
.dash-main { flex: 1; min-width: 0; }
.dash-topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 28px; background: var(--color-surface); border-bottom: 1px solid var(--color-border);
  position: sticky; top: 0; z-index: 10;
}
.dash-content { padding: 28px; }
.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 28px; }
@media (max-width: 900px) { .kpi-grid { grid-template-columns: 1fr 1fr; } }
.kpi-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 20px; }
.kpi-card .kpi-label { font-size: 0.8rem; color: var(--color-text-muted); margin-bottom: 6px; }
.kpi-card .kpi-value { font-family: var(--font-display); font-weight: 800; font-size: 1.7rem; color: var(--color-black); }

@media (max-width: 900px) {
  .dash-sidebar { position: fixed; left: -260px; z-index: 200; transition: left .2s ease; }
  .dash-sidebar.open { left: 0; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}