/* ==========================================================================
   PTG AWE Portal — clean & professional theme
   Layered on top of Bootstrap 5. Neutral surfaces, one accent color.
   ========================================================================== */

:root {
  --accent:        #2563eb;   /* professional blue */
  --accent-dark:   #1d4ed8;
  --accent-soft:   #eff4ff;
  --ink:           #1e293b;   /* slate-800 */
  --ink-soft:      #64748b;   /* slate-500 */
  --line:          #e2e8f0;   /* slate-200 */
  --surface:       #ffffff;
  --canvas:        #f1f5f9;   /* slate-100 */
  --success:       #16a34a;
  --warn:          #d97706;
  --danger:        #dc2626;
  --radius:        14px;
  --shadow:        0 1px 2px rgba(15, 23, 42, .04),
                   0 8px 24px rgba(15, 23, 42, .06);
}

body {
  background: var(--canvas);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* --- Top navigation -------------------------------------------------------- */
.app-nav {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}
.app-nav__inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: .65rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.app-brand {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  text-decoration: none;
  font-weight: 700;
  color: var(--ink);
}
.app-brand__mark {
  background: var(--accent);
  color: #fff;
  border-radius: 9px;
  padding: .2rem .5rem;
  font-size: .95rem;
  letter-spacing: .5px;
}
.app-brand__text { font-size: 1.02rem; }
.app-nav__links {
  display: flex;
  align-items: center;
  gap: .35rem;
  flex-wrap: wrap;
}
.app-nav__links .nav-link {
  color: var(--ink-soft);
  font-weight: 500;
  padding: .35rem .7rem;
  border-radius: 8px;
}
.app-nav__links .nav-link:hover { color: var(--accent); background: var(--accent-soft); }
.app-nav__links .nav-link.active { color: var(--accent); background: var(--accent-soft); }
.app-nav__user {
  color: var(--ink-soft);
  font-size: .9rem;
  padding: 0 .4rem;
}

/* --- Layout ---------------------------------------------------------------- */
.app-main { flex: 1; }
.app-container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 2rem 1.25rem;
}
.app-footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink-soft);
  font-size: .85rem;
}
.app-footer__inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  text-align: center;
}

/* --- Cards ----------------------------------------------------------------- */
.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card .card-body, .card.p-4 { padding: 1.5rem; }
.page-title {
  font-weight: 700;
  letter-spacing: -.01em;
  margin-bottom: .25rem;
}
.page-subtitle { color: var(--ink-soft); margin-bottom: 1.5rem; }

/* --- Buttons --------------------------------------------------------------- */
.btn { border-radius: 10px; font-weight: 600; }
.btn-primary {
  --bs-btn-bg: var(--accent);
  --bs-btn-border-color: var(--accent);
  --bs-btn-hover-bg: var(--accent-dark);
  --bs-btn-hover-border-color: var(--accent-dark);
  --bs-btn-active-bg: var(--accent-dark);
}
.btn-lg { padding: .7rem 1.4rem; }

/* --- Forms ----------------------------------------------------------------- */
.form-label { font-weight: 600; font-size: .88rem; color: var(--ink); }
.form-control, .form-select {
  border-radius: 10px;
  border-color: var(--line);
  padding: .55rem .8rem;
}
.form-control:focus, .form-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 .2rem rgba(37, 99, 235, .15);
}

/* --- Tables ---------------------------------------------------------------- */
.table { --bs-table-border-color: var(--line); }
.table > :not(caption) > * > * { padding: .7rem .75rem; }
.table thead th {
  background: var(--canvas);
  color: var(--ink-soft);
  text-transform: uppercase;
  font-size: .74rem;
  letter-spacing: .04em;
  border-bottom: 1px solid var(--line);
}
.table-wrap {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow-x: auto;            /* scroll wide tables instead of clipping */
  background: var(--surface);
}

/* --- Status badges --------------------------------------------------------- */
.badge-status {
  display: inline-block;
  padding: .2rem .55rem;
  border-radius: 999px;
  font-size: .74rem;
  font-weight: 700;
}
.badge-pending  { background: #fef3c7; color: #92400e; }
.badge-approved { background: #dcfce7; color: #166534; }
.badge-admin    { background: var(--accent-soft); color: var(--accent-dark); }

/* --- Examiner profile grid ------------------------------------------------- */
.profile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: .9rem 1.5rem;
}
.profile-field { display: flex; flex-direction: column; }
.profile-label {
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--ink-soft);
  font-weight: 700;
}
.profile-value { font-size: .95rem; }

/* --- Attestation box (registration) --------------------------------------- */
.attestation-box {
  max-height: 240px;
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--canvas);
  padding: 1rem 1.1rem;
  font-size: .9rem;
  color: var(--ink);
}
.attestation-box p { margin-bottom: .7rem; }

/* --- Auth / landing -------------------------------------------------------- */
.auth-card { max-width: 420px; margin: 3rem auto; }
.auth-card h1 { font-size: 1.4rem; font-weight: 700; text-align: center; }

.hero {
  text-align: center;
  padding: 3.5rem 1rem 1rem;
}
.hero h1 { font-size: 2.1rem; font-weight: 800; letter-spacing: -.02em; }
.hero p  { color: var(--ink-soft); font-size: 1.05rem; max-width: 560px; margin: .75rem auto 0; }
.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2rem;
}
.hero-actions .btn { min-width: 190px; }
.hero-register { margin-top: 1.5rem; }
.hero-register a { color: var(--accent-dark); font-weight: 600; }