/*
 * portal.css — Spondeo Portal Design System
 * Single import for all rebuilt portal pages: login.html, home.html, index.html
 * Pages should NOT contain inline <style> blocks.
 */

/* ── Reset + Base ──────────────────────────────────────────────────────────── */

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

:root {
  /* Colour palette */
  --bg:        #0f0f1a;
  --card:      #1a1a2e;
  --surface:   #16213e;
  --ink:       #ffffff;
  --text:      #f1f5f9;
  --dim:       #64748b;
  --border:    rgba(139, 92, 246, 0.2);
  --glow:      rgba(139, 92, 246, 0.3);

  /* Accent palette */
  --purple:    #8b5cf6;
  --purple-lt: #a78bfa;
  --blue:      #3b82f6;
  --green:     #22c55e;
  --gold:      #d4af37;
  --orange:    #f97316;
  --red:       #ef4444;
  --cyan:      #22d3ee;

  /* Role accent mapping */
  --role-learner:  var(--purple);
  --role-sponsor:  var(--gold);
  --role-reader:   var(--cyan);
  --role-teacher:  var(--blue);
  --role-admin:    var(--orange);

  /* Typography */
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  /* Radius */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  16px;
  --radius-pill: 999px;

  /* Shadows */
  --shadow-card:   8px 8px 0 rgba(0, 0, 0, 0.25);
  --shadow-hover:  12px 12px 0 rgba(0, 0, 0, 0.35);
  --shadow-focus:  0 0 0 3px var(--glow);
}

html, body {
  min-height: 100%;
  font-family: var(--font-body);
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(139,92,246,0.07) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 85%, rgba(59,130,246,0.05) 0%, transparent 55%);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
a:focus-visible { outline: 2px solid var(--purple); outline-offset: 2px; }
button:focus-visible { outline: 2px solid var(--purple); outline-offset: 2px; }

/* ── Layout Utilities ──────────────────────────────────────────────────────── */

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.stack   { display: flex; flex-direction: column; }
.cluster { display: flex; flex-wrap: wrap; align-items: center; }
.center  { display: flex; align-items: center; justify-content: center; }

/* ── Typography ────────────────────────────────────────────────────────────── */

.text-mono  { font-family: var(--font-mono); }
.text-dim   { color: var(--dim); }
.text-ink   { color: var(--ink); }
.text-sm    { font-size: 0.875rem; }
.text-xs    { font-size: 0.75rem; }
.text-lg    { font-size: 1.125rem; }
.label      { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 3px; text-transform: uppercase; color: var(--dim); }

.heading-1  { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 900; letter-spacing: -1.5px; color: var(--ink); line-height: 1.05; }
.heading-2  { font-size: clamp(1.25rem, 3vw, 1.75rem); font-weight: 700; color: var(--ink); line-height: 1.2; }
.heading-3  { font-size: 1.1rem; font-weight: 700; color: var(--ink); }

/* ── Buttons ───────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 14px 28px;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  background: none;
  transition: color 0.18s, background 0.18s, box-shadow 0.18s, transform 0.12s;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary — filled purple */
.btn-primary {
  background: var(--purple);
  border-color: var(--purple);
  color: var(--ink);
  box-shadow: var(--shadow-card);
}
.btn-primary:hover:not(:disabled) {
  background: var(--purple-lt);
  border-color: var(--purple-lt);
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
}

/* Ghost — outlined */
.btn-ghost {
  border-color: var(--purple);
  color: var(--text);
}
.btn-ghost::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--purple);
  transform: translateX(-101%);
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 0;
}
.btn-ghost:hover:not(:disabled)::before { transform: translateX(0); }
.btn-ghost:hover:not(:disabled) { color: var(--ink); box-shadow: var(--shadow-hover); }
.btn-ghost > * { position: relative; z-index: 1; }

/* Danger */
.btn-danger {
  border-color: var(--red);
  color: var(--red);
}
.btn-danger:hover:not(:disabled) { background: var(--red); color: var(--ink); }

/* Small variant */
.btn-sm { padding: 8px 16px; font-size: 0.75rem; letter-spacing: 1.5px; }

/* Loading spinner inside button */
.btn-spinner {
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: var(--ink);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Form Inputs ───────────────────────────────────────────────────────────── */

.input-field {
  width: 100%;
  padding: 14px 18px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color 0.18s, box-shadow 0.18s;
}

.input-field::placeholder { color: var(--dim); }

.input-field:focus {
  outline: none;
  border-color: var(--purple);
  box-shadow: var(--shadow-focus);
}

.input-field:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ── Cards ─────────────────────────────────────────────────────────────────── */

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  position: relative;
  overflow: hidden;
  transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
}

.card-interactive {
  cursor: pointer;
  text-decoration: none;
  display: block;
  box-shadow: var(--shadow-card);
}

.card-interactive:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(139, 92, 246, 0.45);
}

/* Accent top-bar — coloured left border */
.card[data-accent]::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}
.card[data-accent="purple"]::before  { background: var(--purple); }
.card[data-accent="blue"]::before    { background: var(--blue); }
.card[data-accent="green"]::before   { background: var(--green); }
.card[data-accent="gold"]::before    { background: var(--gold); }
.card[data-accent="orange"]::before  { background: var(--orange); }
.card[data-accent="cyan"]::before    { background: var(--cyan); }

/* ── Badges ────────────────────────────────────────────────────────────────── */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  border: 1px solid;
}

.badge-learner  { color: var(--purple);  border-color: var(--purple);  background: rgba(139,92,246,0.1); }
.badge-sponsor  { color: var(--gold);    border-color: var(--gold);    background: rgba(212,175,55,0.1); }
.badge-reader   { color: var(--cyan);    border-color: var(--cyan);    background: rgba(34,211,238,0.1); }
.badge-teacher, .badge-teach { color: var(--blue);    border-color: var(--blue);    background: rgba(59,130,246,0.1); }
.badge-admin    { color: var(--orange);  border-color: var(--orange);  background: rgba(249,115,22,0.1); }
.badge-partner  { color: var(--gold);    border-color: var(--gold);    background: rgba(212,175,55,0.1); }

/* ── Alert / Banner ────────────────────────────────────────────────────────── */

.alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.alert-error   { background: rgba(239,68,68,0.12);  border: 1px solid rgba(239,68,68,0.35);  color: #fca5a5; }
.alert-success { background: rgba(34,197,94,0.12);  border: 1px solid rgba(34,197,94,0.35);  color: #86efac; }
.alert-info    { background: rgba(59,130,246,0.12); border: 1px solid rgba(59,130,246,0.35); color: #93c5fd; }
.alert-warning { background: rgba(212,175,55,0.12); border: 1px solid rgba(212,175,55,0.35); color: #fde68a; }

/* Visible toggle (JS adds/removes) */
.alert[hidden], [hidden] { display: none !important; }

/* ── Status Dot ────────────────────────────────────────────────────────────── */

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  flex-shrink: 0;
  animation: pulse-dot 2.2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.45; transform: scale(0.75); }
}

/* ── Avatar ────────────────────────────────────────────────────────────────── */

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
}

.avatar-sm { width: 28px; height: 28px; }
.avatar-lg { width: 48px; height: 48px; }

/* ── Page Header ───────────────────────────────────────────────────────────── */

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border);
  background: rgba(10,10,20,0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.page-header-brand {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--dim);
  text-decoration: none;
}

.page-header-brand:hover { color: var(--purple); }

/* ── Wordmark ──────────────────────────────────────────────────────────────── */

.wordmark {
  font-size: clamp(48px, 7vw, 80px);
  font-weight: 900;
  letter-spacing: -2px;
  line-height: 1;
  color: var(--ink);
}

.wordmark em {
  font-style: normal;
  color: var(--purple);
}

/* ── Assume Banner (admin role switching) ──────────────────────────────────── */

.assume-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-5);
  background: rgba(249,115,22,0.12);
  border-bottom: 1px solid rgba(249,115,22,0.35);
  color: #fdba74;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 1px;
}

/* ── Card Grid ─────────────────────────────────────────────────────────────── */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-5);
}

/* ── Responsive ────────────────────────────────────────────────────────────── */

@media (max-width: 640px) {
  .container { padding: 0 var(--space-4); }
  .card-grid { grid-template-columns: 1fr; }
  .btn       { padding: 12px 20px; font-size: 0.8rem; }
  .page-header { padding: var(--space-3) var(--space-4); }
}