/* ============================================================
   Hotel WiFi Captive Portal — Base Styles
   Theme: Refined Luxury / Dark Navy + Gold
   Fonts: Cormorant Garamond (display) + Plus Jakarta Sans (UI)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,300;1,400&family=Plus+Jakarta+Sans:wght@300;400;500;600&display=swap');

/* ─── Design Tokens ─── */
:root {
  /* Brand */
  --gold: oklch(74% 0.09 75);
  --gold-dim: oklch(60% 0.07 75);
  --gold-glow: oklch(74% 0.09 75 / 0.15);

  /* Backgrounds */
  --bg-deep: oklch(8% 0.02 260);
  --bg-mid: oklch(12% 0.025 255);
  --bg-panel: oklch(15% 0.025 255);

  /* Glass surfaces */
  --glass-bg: oklch(100% 0 0 / 0.05);
  --glass-border: oklch(100% 0 0 / 0.10);
  --glass-border-hover: oklch(100% 0 0 / 0.18);
  --glass-blur: blur(20px) saturate(180%);

  /* Text */
  --text-primary: oklch(94% 0.005 260);
  --text-secondary: oklch(65% 0.01 260);
  --text-muted: oklch(45% 0.01 260);
  --text-gold: var(--gold);

  /* State */
  --error: oklch(65% 0.18 25);
  --success: oklch(72% 0.14 160);

  /* Motion */
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ─── Base ─── */
html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-deep);
  min-height: 100dvh;
  overflow-x: hidden;
}

/* ─── Background ─── */
.portal-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 15% 60%, oklch(22% 0.04 255 / 0.6) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 85% 30%, oklch(18% 0.03 250 / 0.4) 0%, transparent 55%),
    oklch(8% 0.02 260);
}

/* Subtle grain texture */
.portal-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  opacity: 0.4;
  pointer-events: none;
}

/* ─── Layout ─── */
.portal-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100dvh;
}

@media (max-width: 680px) {
  .portal-shell {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }
}

/* ─── Branding Panel ─── */
.brand-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: clamp(2rem, 5vw, 4rem);
  border-right: 1px solid var(--glass-border);
  position: relative;
  overflow: hidden;
}

.brand-panel::before {
  content: '';
  position: absolute;
  width: 320px;
  height: 320px;
  background: var(--gold-glow);
  border-radius: 50%;
  top: -80px;
  left: -80px;
  filter: blur(80px);
  pointer-events: none;
}

@media (max-width: 680px) {
  .brand-panel {
    padding: 2.5rem 1.5rem 1.5rem;
    border-right: none;
    border-bottom: 1px solid var(--glass-border);
  }
  .brand-panel::before { display: none; }
}

.brand-logo {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 300;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  text-align: center;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.brand-tagline {
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 2.5rem;
}

.brand-divider {
  width: 32px;
  height: 1px;
  background: var(--gold-dim);
  margin: 0 auto 2.5rem;
  opacity: 0.6;
}

.brand-info {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
}

.brand-info-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

.brand-info-item svg {
  width: 14px;
  height: 14px;
  opacity: 0.5;
  flex-shrink: 0;
}

@media (max-width: 680px) {
  .brand-info { flex-direction: row; justify-content: center; flex-wrap: wrap; }
  .brand-divider { margin-bottom: 1.25rem; }
  .brand-logo { margin-bottom: 0.3rem; }
  .brand-tagline { margin-bottom: 1.5rem; }
}

/* ─── Form Panel ─── */
.form-panel {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1.5rem, 4vw, 3rem);
}

/* ─── Glass Card ─── */
.glass-card {
  width: 100%;
  max-width: 380px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: clamp(1.5rem, 4vw, 2.25rem);
  animation: cardIn 0.6s var(--ease-out-quart) both;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.card-title {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 1.5rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
}

.card-subtitle {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

/* ─── Tabs ─── */
.tab-switcher {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: oklch(0% 0 0 / 0.25);
  border-radius: 10px;
  padding: 3px;
  margin-bottom: 1.5rem;
}

.tab-btn {
  padding: 0.45rem 0;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  cursor: pointer;
  border-radius: 7px;
  transition: all 0.25s var(--ease-out-quart);
}

.tab-btn.active {
  background: var(--glass-border-hover);
  color: var(--text-primary);
}

/* ─── Form Fields ─── */
.field-group {
  margin-bottom: 1rem;
}

.field-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.field-input {
  width: 100%;
  padding: 0.65rem 0.9rem;
  background: oklch(100% 0 0 / 0.04);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  color: var(--text-primary);
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 0.9rem;
  transition: border-color 0.2s, background 0.2s;
  outline: none;
  -webkit-appearance: none;
}

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

.field-input:focus {
  border-color: var(--gold-dim);
  background: oklch(100% 0 0 / 0.06);
}

.field-input.voucher-input {
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
}

/* ─── Checkbox ─── */
.tc-row {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  margin-bottom: 1.25rem;
}

.tc-checkbox {
  width: 16px;
  height: 16px;
  border: 1px solid var(--glass-border-hover);
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
  margin-top: 2px;
  accent-color: var(--gold);
}

.tc-label {
  font-size: 0.74rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.tc-label a {
  color: var(--gold-dim);
  text-decoration: none;
}

.tc-label a:hover {
  color: var(--gold);
}

/* ─── Error Message ─── */
.form-error {
  font-size: 0.78rem;
  color: var(--error);
  margin-bottom: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: oklch(65% 0.18 25 / 0.08);
  border: 1px solid oklch(65% 0.18 25 / 0.2);
  border-radius: 8px;
  display: none;
}

.form-error.visible {
  display: block;
  animation: errorIn 0.25s var(--ease-out-quart);
}

@keyframes errorIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ─── Submit Button ─── */
.btn-connect {
  width: 100%;
  padding: 0.8rem 1.5rem;
  background: linear-gradient(135deg, var(--gold), oklch(65% 0.11 60));
  border: none;
  border-radius: 10px;
  color: oklch(10% 0.02 70);
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.15s;
  position: relative;
  overflow: hidden;
}

.btn-connect::after {
  content: '';
  position: absolute;
  inset: 0;
  background: oklch(100% 0 0 / 0.1);
  opacity: 0;
  transition: opacity 0.2s;
}

.btn-connect:hover { opacity: 0.92; }
.btn-connect:hover::after { opacity: 1; }
.btn-connect:active { transform: scale(0.98); }

.btn-connect:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-connect .btn-spinner {
  display: none;
  width: 14px;
  height: 14px;
  border: 2px solid oklch(10% 0.02 70 / 0.3);
  border-top-color: oklch(10% 0.02 70);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 0 auto;
}

.btn-connect.loading .btn-label { display: none; }
.btn-connect.loading .btn-spinner { display: block; }

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ─── Success / Status Pages ─── */
.status-page {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  padding: 2rem;
  text-align: center;
}

.status-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  animation: iconPop 0.5s var(--ease-out-quart) 0.2s both;
}

@keyframes iconPop {
  from { opacity: 0; transform: scale(0.6); }
  to { opacity: 1; transform: scale(1); }
}

.status-icon.success {
  background: oklch(72% 0.14 160 / 0.12);
  border: 1px solid oklch(72% 0.14 160 / 0.3);
  color: var(--success);
}

.status-icon.warning {
  background: oklch(74% 0.09 75 / 0.12);
  border: 1px solid oklch(74% 0.09 75 / 0.3);
  color: var(--gold);
}

.status-icon.error {
  background: oklch(65% 0.18 25 / 0.12);
  border: 1px solid oklch(65% 0.18 25 / 0.3);
  color: var(--error);
}

.status-title {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 300;
  letter-spacing: 0.06em;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  animation: fadeUp 0.5s var(--ease-out-quart) 0.3s both;
}

.status-body {
  font-size: 0.88rem;
  color: var(--text-secondary);
  max-width: 32ch;
  line-height: 1.7;
  animation: fadeUp 0.5s var(--ease-out-quart) 0.4s both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.session-info-card {
  margin: 2rem auto 0;
  max-width: 300px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 1.25rem 1.5rem;
  animation: fadeUp 0.5s var(--ease-out-quart) 0.5s both;
}

.session-info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.4rem 0;
  font-size: 0.8rem;
}

.session-info-row:not(:last-child) {
  border-bottom: 1px solid var(--glass-border);
}

.session-info-row .label {
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

.session-info-row .value {
  color: var(--text-primary);
  font-weight: 500;
}

.btn-secondary {
  display: inline-block;
  margin-top: 2rem;
  padding: 0.65rem 2rem;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border-hover);
  border-radius: 10px;
  color: var(--text-secondary);
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
  animation: fadeUp 0.5s var(--ease-out-quart) 0.6s both;
}

.btn-secondary:hover {
  border-color: var(--gold-dim);
  color: var(--gold);
}

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