:root {
  --bg-main: #0b0f19;
  --bg-card: #111827;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(255, 255, 255, 0.16);
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --emerald-accent: #10b981;
  --emerald-bg: rgba(16, 185, 129, 0.12);
  --emerald-border: rgba(16, 185, 129, 0.28);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.12);
  --danger-border: rgba(239, 68, 68, 0.28);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background-image:
    radial-gradient(circle at 15% 15%, rgba(99, 102, 241, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 85% 20%, rgba(16, 185, 129, 0.12) 0%, transparent 35%),
    radial-gradient(circle at 50% 80%, rgba(139, 92, 246, 0.10) 0%, transparent 45%);
  background-attachment: fixed;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 36px 32px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.badge-hub {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 18px;
}

.badge-hub .dot {
  width: 7px;
  height: 7px;
  background: var(--emerald-accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--emerald-accent);
}

h1 {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.auth-sub {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.form-field {
  margin-bottom: 16px;
}

.form-field label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
select {
  width: 100%;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  color: var(--text-primary);
  font: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--emerald-border);
  box-shadow: 0 0 0 3px var(--emerald-bg);
}

select option {
  background: var(--bg-card);
  color: var(--text-primary);
}

.field-error {
  color: #fca5a5;
  font-size: 0.8rem;
  margin-top: 5px;
}

.field-help {
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-top: 5px;
}

.non-field-errors {
  margin-bottom: 14px;
}

.non-field-errors li {
  color: #fca5a5;
  font-size: 0.85rem;
  margin-bottom: 4px;
  list-style: none;
}

.btn-primary,
.btn-secondary,
.btn-red,
.btn-yellow {
  display: inline-block;
  padding: 11px 18px;
  border-radius: 10px;
  font: inherit;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  transition: filter 0.15s, background 0.15s, border-color 0.15s;
}

.btn-primary {
  width: 100%;
  margin-top: 8px;
  background: var(--emerald-accent);
  color: #06281e;
  border: none;
}

.btn-primary:hover {
  filter: brightness(1.1);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-weight: 600;
}

.btn-secondary:hover {
  border-color: var(--border-focus);
  color: var(--text-primary);
}

/* Solid variants; text contrast is theme-independent (bg never changes) */
.btn-red {
  background: #d32f2f;
  color: #ffffff;
  border: none;
}

.btn-red:hover {
  filter: brightness(1.08);
}

.btn-yellow {
  background: #facc15;
  color: #422006;
  border: none;
}

.btn-yellow:hover {
  filter: brightness(1.06);
}

.auth-alt {
  margin-top: 20px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.auth-alt a {
  color: var(--emerald-accent);
  text-decoration: none;
  font-weight: 600;
}

.auth-alt a:hover {
  text-decoration: underline;
}

.messages {
  margin-bottom: 18px;
  display: grid;
  gap: 8px;
}

.message {
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 0.85rem;
  border: 1px solid;
}

.message-success {
  background: var(--emerald-bg);
  border-color: var(--emerald-border);
  color: #6ee7b7;
}

.message-error {
  background: var(--danger-bg);
  border-color: var(--danger-border);
  color: #fca5a5;
}

.message-warning {
  background: rgba(245, 158, 11, 0.12);
  border-color: rgba(245, 158, 11, 0.28);
  color: #fcd34d;
}

.message-info {
  background: rgba(99, 102, 241, 0.12);
  border-color: rgba(99, 102, 241, 0.28);
  color: #a5b4fc;
}

.info-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 20px;
  padding: 16px 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.info-grid dt {
  color: var(--text-muted);
}

.info-grid dd {
  color: var(--text-primary);
  font-weight: 500;
  overflow-wrap: anywhere;
}

.section-title {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.actions-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.inline-form {
  display: contents;
}

/* ---------- Profile overview (landscape layout) ---------- */
.profile-card {
  max-width: 2200px;
  padding: 32px 36px 36px;
}

.profile-top {
  display: flex;
  align-items: stretch;
  gap: 16px;
  margin-bottom: 24px;
}

.profile-top .info-grid {
  flex: 1;
  min-width: 0;
  margin-bottom: 0;
  align-content: center;
}

.profile-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  flex: 1;
  min-width: 0;
  align-content: center;
}

.profile-actions .btn-primary,
.profile-actions .btn-secondary,
.profile-actions .btn-red,
.profile-actions .btn-yellow {
  width: auto;
  margin-top: 0;
}

.prefs-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.prefs-grid .form-field {
  margin-bottom: 0;
}

@media (min-width: 721px) {
  .prefs-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1700px) {
  .prefs-grid {
    grid-template-columns: repeat(8, minmax(0, 1fr));
  }

  .profile-actions {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .profile-top {
    flex-direction: column;
    align-items: stretch;
  }

  .profile-actions {
    grid-template-columns: 1fr;
  }
}

/* ---------- Theme toggle ---------- */
.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 50;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: 9999px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.theme-toggle:hover {
  color: var(--text-primary);
  border-color: var(--border-focus);
}

.theme-toggle .icon-moon { display: none; }
[data-theme="light"] .theme-toggle .icon-moon { display: block; }
[data-theme="light"] .theme-toggle .icon-sun { display: none; }

/* ---------- Light theme ---------- */
[data-theme="light"] {
  color-scheme: light;
  --bg-main: #f1f5f9;
  --bg-card: #ffffff;
  --border-subtle: rgba(15, 23, 42, 0.10);
  --border-focus: rgba(15, 23, 42, 0.20);
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-muted: #6b7280;
  --emerald-accent: #059669;
  --danger: #dc2626;
}

[data-theme="light"] body {
  background-image:
    radial-gradient(circle at 15% 15%, rgba(99, 102, 241, 0.10) 0%, transparent 40%),
    radial-gradient(circle at 85% 20%, rgba(16, 185, 129, 0.08) 0%, transparent 35%),
    radial-gradient(circle at 50% 80%, rgba(139, 92, 246, 0.06) 0%, transparent 45%);
}

[data-theme="light"] .auth-card {
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.12);
}

[data-theme="light"] .badge-hub,
[data-theme="light"] .theme-toggle {
  background: rgba(15, 23, 42, 0.04);
}

[data-theme="light"] input[type="text"],
[data-theme="light"] input[type="email"],
[data-theme="light"] input[type="password"],
[data-theme="light"] input[type="number"],
[data-theme="light"] select {
  background: #f8fafc;
  border-color: rgba(15, 23, 42, 0.15);
}

[data-theme="light"] select option {
  background: #ffffff;
}

[data-theme="light"] .btn-secondary {
  background: #f1f5f9;
}

[data-theme="light"] .info-grid {
  background: rgba(15, 23, 42, 0.03);
}

[data-theme="light"] .field-error,
[data-theme="light"] .non-field-errors li,
[data-theme="light"] .message-error {
  color: #dc2626;
}

[data-theme="light"] .message-success {
  color: #065f46;
}

[data-theme="light"] .message-warning {
  color: #92400e;
}

[data-theme="light"] .message-info {
  color: #4338ca;
}