/* ============================================================
   PanyaSchoolKit Brand v3 — Shared CSS
   Wisdom Blue + Champagne Gold + Warm canvas
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans+Thai:wght@300;400;500;600;700&family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  /* Primary — Sapphire (สีปัญญา) */
  --pk-blue-900: #1E3A8A;
  --pk-blue-800: #1E40AF;
  --pk-blue-700: #2D4AB8;
  --pk-blue-600: #2563EB;
  --pk-blue-500: #3B82F6;
  --pk-blue-200: #BFD0FB;
  --pk-blue-100: #DBE5FF;
  --pk-blue-50:  #EEF3FF;

  /* Accent — Champagne Gold (ทองแห่งความรู้) */
  --pk-gold-700: #B98F5C;
  --pk-gold-500: #D4A574;
  --pk-gold-300: #E8C896;
  --pk-gold-100: #FAF3E6;

  /* Surfaces (NOT pure white) */
  --pk-canvas:   #EBF0FA;
  --pk-canvas-2: #DDE5F3;
  --pk-paper:    #FFFFFF;
  --pk-mist:     #F8FAFC;

  /* Text (warm dark) */
  --pk-ink:      #0F1A36;
  --pk-ink-soft: #1F2A4E;
  --pk-ash:      #4B5670;
  --pk-mist-text:#7B8497;
  --pk-silver:   #B6BCC9;

  /* Lines */
  --pk-border:    #D8DEE9;
  --pk-border-em: #A8B2C4;

  /* Feedback */
  --pk-success: #047857;
  --pk-success-bg: #ECFDF5;
  --pk-warning: #B45309;
  --pk-warning-bg: #FFFBEB;
  --pk-danger:  #B91C1C;
  --pk-danger-bg: #FEF2F2;
}

/* ============= Base ============= */
.pk-app, .pk-app * { box-sizing: border-box; }

.pk-app {
  font-family: 'IBM Plex Sans Thai', 'Inter', sans-serif;
  color: var(--pk-ink-soft);
  background:
    radial-gradient(ellipse 80% 50% at 90% 0%, rgba(212, 165, 116, 0.10) 0%, transparent 50%),
    radial-gradient(ellipse 100% 60% at 10% 5%, rgba(30, 64, 175, 0.08) 0%, transparent 50%),
    var(--pk-canvas);
  background-attachment: fixed;
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.pk-sans { font-family: 'Inter', sans-serif; }
.pk-thai { font-family: 'IBM Plex Sans Thai', sans-serif; }

.pk-app h1, .pk-app h2, .pk-app h3, .pk-app h4 {
  font-family: 'IBM Plex Sans Thai', 'Inter', sans-serif;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.35;
  color: var(--pk-ink);
  margin: 0;
}

/* ============= Topbar ============= */
.pk-topbar {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--pk-border);
  position: sticky;
  top: 0;
  z-index: 50;
}
.pk-topbar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.pk-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}
.pk-logo img {
  height: 32px;
  width: auto;
  display: block;
}
.pk-nav { display: flex; align-items: center; gap: 28px; }
.pk-nav a {
  color: var(--pk-ash);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.pk-nav a:hover { color: var(--pk-blue-800); }
.pk-nav a.active { color: var(--pk-blue-800); font-weight: 600; }

/* User chip */
.pk-user-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 6px 6px 12px;
  background: var(--pk-paper);
  border: 1px solid var(--pk-border);
  border-radius: 100px;
  font-size: 13px;
  color: var(--pk-ink);
}
.pk-avatar {
  width: 28px; height: 28px;
  background: var(--pk-blue-800);
  color: var(--pk-paper);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 12px;
}

/* ============= Buttons ============= */
.pk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 100px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.pk-btn-primary {
  background: var(--pk-blue-800);
  color: var(--pk-paper);
  border-color: var(--pk-blue-800);
  box-shadow: 0 2px 6px rgba(30,64,175,0.18);
}
.pk-btn-primary:hover {
  background: var(--pk-blue-900);
  border-color: var(--pk-blue-900);
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(30,64,175,0.25);
}
.pk-btn-secondary {
  background: var(--pk-paper);
  color: var(--pk-blue-800);
  border-color: var(--pk-border-em);
}
.pk-btn-secondary:hover {
  border-color: var(--pk-blue-800);
}
.pk-btn-danger {
  background: var(--pk-paper);
  color: var(--pk-danger);
  border-color: #FECACA;
}
.pk-btn-danger:hover { background: var(--pk-danger-bg); }
.pk-btn-lg { padding: 13px 26px; font-size: 15px; }
.pk-btn-sm { padding: 7px 14px; font-size: 13px; }
.pk-btn-block { width: 100%; }
.pk-btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none !important; }

/* ============= Card ============= */
.pk-card {
  background: var(--pk-paper);
  border: 1px solid var(--pk-border);
  border-radius: 14px;
  padding: 24px;
}
.pk-card-lg { padding: 32px; }
.pk-card-sm { padding: 16px; }
.pk-card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--pk-mist-text);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 14px;
}

/* ============= Form ============= */
.pk-field { margin-bottom: 14px; }
.pk-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--pk-ink-soft);
  margin-bottom: 6px;
}
.pk-label .pk-hint { font-weight: 400; color: var(--pk-mist-text); font-size: 11px; }
.pk-input {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--pk-border);
  border-radius: 10px;
  font-size: 14px;
  font-family: inherit;
  color: var(--pk-ink);
  background: var(--pk-paper);
  outline: none;
  transition: all 0.15s;
}
.pk-input:focus {
  border-color: var(--pk-blue-600);
  box-shadow: 0 0 0 3px var(--pk-blue-100);
}

/* ============= Status Badges ============= */
.pk-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.pk-badge-active   { background: var(--pk-success-bg); color: var(--pk-success); }
.pk-badge-trial    { background: var(--pk-gold-100);   color: var(--pk-gold-700); }
.pk-badge-warning  { background: var(--pk-warning-bg); color: var(--pk-warning); }
.pk-badge-danger   { background: var(--pk-danger-bg);  color: var(--pk-danger); }
.pk-badge-info     { background: var(--pk-blue-50);    color: var(--pk-blue-800); }

/* ============= Layout helpers ============= */
.pk-page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}
.pk-page-header { margin-bottom: 28px; }
.pk-page-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--pk-ink);
  margin: 0 0 6px;
  letter-spacing: -0.02em;
}
.pk-page-subtitle {
  color: var(--pk-ash);
  font-size: 15px;
}

/* Grid */
.pk-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.pk-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 760px) {
  .pk-grid-2, .pk-grid-3 { grid-template-columns: 1fr; }
}

/* ============= Footer (minimal) ============= */
.pk-footer {
  border-top: 1px solid var(--pk-border);
  padding: 24px;
  text-align: center;
  font-size: 12px;
  color: var(--pk-mist-text);
}
.pk-footer a {
  color: var(--pk-ash);
  text-decoration: none;
  margin: 0 10px;
  font-weight: 500;
}
.pk-footer a:hover { color: var(--pk-blue-800); }

/* ============= Loading ============= */
.pk-loading {
  color: var(--pk-mist-text);
  text-align: center;
  padding: 32px;
  font-size: 14px;
}

/* ============= Alert ============= */
.pk-alert {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 13.5px;
  margin-bottom: 14px;
  border: 1px solid;
  line-height: 1.55;
}
.pk-alert-error   { background: var(--pk-danger-bg);  color: var(--pk-danger);  border-color: #FECACA; }
.pk-alert-success { background: var(--pk-success-bg); color: var(--pk-success); border-color: #BBF7D0; }
.pk-alert-warning { background: var(--pk-warning-bg); color: var(--pk-warning); border-color: #FED7AA; }
.pk-alert-info    { background: var(--pk-blue-50);    color: var(--pk-blue-800); border-color: var(--pk-blue-200); }