/* =====================================================
   VOXSTR - Dashboard & Auth Styles
   Shared between login.html and dashboard.html.

   Color system: pure black and white, no accent color.
   Supports system dark/light mode via prefers-color-scheme.
   ===================================================== */

/* ----- Design tokens ----- */

:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --bg-card: #ffffff;
  --bg-card-hover: #f9fafb;
  --border-primary: #e5e7eb;
  --border-subtle: #f3f4f6;
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-tertiary: #9ca3af;
  --accent: #111827;
  --accent-hover: #000000;
  --accent-light: #f3f4f6;
  --accent-text: #111827;
  --accent-muted: rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
  --danger: #dc2626;
  --danger-bg: rgba(239, 68, 68, 0.06);
  --danger-border: rgba(239, 68, 68, 0.15);
  --danger-text: #dc2626;
  --success-bg: rgba(16, 185, 129, 0.08);
  --success-border: rgba(16, 185, 129, 0.2);
  --success-text: #059669;
  --trial-bg: rgba(0, 0, 0, 0.08);
  --trial-border: rgba(0, 0, 0, 0.2);
  --trial-text: #111827;
  --failed-bg: rgba(239, 68, 68, 0.06);
  --failed-border: rgba(239, 68, 68, 0.15);
  --failed-text: #dc2626;
  --toast-bg: #ffffff;
  --toast-border: #e5e7eb;
  --toast-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
  --modal-backdrop: rgba(0, 0, 0, 0.4);
  --modal-bg: #ffffff;
  --scrollbar-thumb: rgba(0, 0, 0, 0.12);
  --scrollbar-thumb-hover: rgba(0, 0, 0, 0.2);
  --selection-bg: rgba(0, 0, 0, 0.15);
  --selection-color: inherit;
  --toggle-track: #e5e7eb;
  --toggle-border: #d1d5db;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #0A0A0F;
    --bg-secondary: #111118;
    --bg-tertiary: #1a1a24;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.05);
    --border-primary: rgba(255, 255, 255, 0.1);
    --border-subtle: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: #9ca3af;
    --text-tertiary: #6b7280;
    --accent: #ffffff;
    --accent-hover: #e5e7eb;
    --accent-light: rgba(255, 255, 255, 0.08);
    --accent-text: #ffffff;
    --accent-muted: rgba(255, 255, 255, 0.05);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
    --danger: #fca5a5;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --danger-border: rgba(239, 68, 68, 0.25);
    --danger-text: #fca5a5;
    --success-bg: rgba(16, 185, 129, 0.12);
    --success-border: rgba(16, 185, 129, 0.3);
    --success-text: #6ee7b7;
    --trial-bg: rgba(0, 0, 0, 0.12);
    --trial-border: rgba(0, 0, 0, 0.3);
    --trial-text: #d1d5db;
    --failed-bg: rgba(239, 68, 68, 0.12);
    --failed-border: rgba(239, 68, 68, 0.3);
    --failed-text: #fca5a5;
    --toast-bg: rgba(20, 20, 30, 0.95);
    --toast-border: rgba(255, 255, 255, 0.08);
    --toast-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
    --modal-backdrop: rgba(5, 5, 10, 0.75);
    --modal-bg: rgba(18, 18, 28, 0.95);
    --scrollbar-thumb: rgba(255, 255, 255, 0.08);
    --scrollbar-thumb-hover: rgba(255, 255, 255, 0.15);
    --selection-bg: rgba(0, 0, 0, 0.35);
    --selection-color: #fff;
    --toggle-track: rgba(255, 255, 255, 0.08);
    --toggle-border: rgba(255, 255, 255, 0.1);
  }
}

/* ----- Reset / base ----- */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

button {
  cursor: pointer;
}

button[disabled],
button[aria-disabled="true"] {
  cursor: not-allowed;
}

/* =====================================================
   TYPOGRAPHY
   ===================================================== */

.wordmark {
  font-family: 'Quicksand', 'Inter', sans-serif;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  text-decoration: none;
}

.voxstr-logo {
  flex-shrink: 0;
  filter: drop-shadow(0 0 6px rgba(0, 0, 0, 0.3));
}

.gradient-text {
  color: var(--text-primary);
}

.mono {
  font-family: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
}

/* =====================================================
   BACKGROUNDS
   ===================================================== */

.auth-glow {
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(0, 0, 0, 0.04) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 80% 80%, rgba(0, 0, 0, 0.03) 0%, transparent 60%);
}

@media (prefers-color-scheme: dark) {
  .auth-glow {
    background:
      radial-gradient(ellipse 60% 50% at 50% 0%, rgba(0, 0, 0, 0.15) 0%, transparent 60%),
      radial-gradient(ellipse 40% 40% at 80% 80%, rgba(0, 0, 0, 0.08) 0%, transparent 60%);
  }
}

.dashboard-glow {
  background:
    radial-gradient(ellipse 60% 40% at 0% 0%, rgba(0, 0, 0, 0.03) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 100% 0%, rgba(0, 0, 0, 0.02) 0%, transparent 55%);
}

@media (prefers-color-scheme: dark) {
  .dashboard-glow {
    background:
      radial-gradient(ellipse 60% 40% at 0% 0%, rgba(0, 0, 0, 0.12) 0%, transparent 55%),
      radial-gradient(ellipse 50% 40% at 100% 0%, rgba(0, 0, 0, 0.08) 0%, transparent 55%);
  }
}

.grid-overlay {
  background-image:
    linear-gradient(var(--border-subtle) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-subtle) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.3;
}

@media (prefers-color-scheme: dark) {
  .grid-overlay {
    opacity: 0.15;
  }
}

/* =====================================================
   CARDS
   ===================================================== */

.auth-card,
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  box-shadow: var(--shadow-sm);
}

.glass-card-bright {
  background: var(--accent-muted);
  border: 1px solid var(--accent);
  border-color: rgba(0, 0, 0, 0.2);
}

@media (prefers-color-scheme: dark) {
  .glass-card-bright {
    border-color: rgba(0, 0, 0, 0.25);
  }
}

/* =====================================================
   INPUTS
   ===================================================== */

.auth-input,
.dash-input {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.auth-input:focus,
.dash-input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg-primary);
  box-shadow: 0 0 0 3px var(--accent-muted);
}

.auth-input::placeholder,
.dash-input::placeholder {
  color: var(--text-tertiary);
}

/* =====================================================
   BUTTONS
   ===================================================== */

.cta-primary {
  background: var(--accent);
  border: 1px solid var(--accent);
  color: #fff;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.cta-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.cta-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.cta-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--text-tertiary);
  color: var(--text-primary);
}

.cta-ghost {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-tertiary);
  transition: all 0.2s ease;
}

.cta-ghost:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.cta-danger {
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  color: var(--danger-text);
  transition: all 0.2s ease;
}

.cta-danger:hover {
  background: var(--danger-bg);
  border-color: var(--danger);
  color: var(--danger);
  filter: brightness(1.1);
}

/* =====================================================
   PORTAL CTA + GRACE BANNER (#54)
   ----------------------------------------------------
   "Manage billing" deep-link to the LS customer portal.
   Three visual states drive copy + emphasis:
   - default        — neutral "Manage billing"
   - grace-urgent   — red banner-style "Update payment method"
   - lifetime       — neutral "Manage payment + receipts"
   The default token-based palette gives us a calm secondary
   button; the urgent variant uses --danger-* tokens to match
   the rest of the dashboard's semantic system.
   ===================================================== */

.cta-portal {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  color: var(--text-primary);
  transition: all 0.2s ease;
  text-decoration: none;
}

.cta-portal:hover {
  background: var(--bg-card-hover);
  border-color: var(--text-tertiary);
  color: var(--text-primary);
  text-decoration: none;
}

.cta-grace-urgent {
  background: var(--danger-bg);
  border: 1px solid var(--danger);
  color: var(--danger-text);
  transition: all 0.2s ease;
  text-decoration: none;
}

.cta-grace-urgent:hover {
  background: var(--danger);
  border-color: var(--danger);
  color: #ffffff;
  text-decoration: none;
}

.grace-banner {
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  border-left: 3px solid var(--danger);
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
}

.grace-banner-title {
  color: var(--danger-text);
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 0.25rem;
}

.grace-banner-body {
  color: var(--text-secondary);
  font-size: 0.8125rem;
  line-height: 1.4;
}

.social-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.social-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--text-tertiary);
  color: var(--text-primary);
}

/* =====================================================
   TOP BAR (dashboard)
   ===================================================== */

.dash-topbar {
  background: var(--bg-primary);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-primary);
}

@media (prefers-color-scheme: dark) {
  .dash-topbar {
    background: rgba(10, 10, 15, 0.85);
  }
}

.plan-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.7rem;
  border-radius: 9999px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: var(--accent-light);
  border: 1px solid var(--accent);
  border-color: rgba(0, 0, 0, 0.25);
  color: var(--accent-text);
}

.plan-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 9999px;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(167, 139, 250, 0.6);
}

.avatar-orb {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  border: 2px solid var(--border-primary);
}

/* User menu dropdown */
.user-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 0.5rem);
  min-width: 220px;
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  padding: 0.5rem;
  opacity: 0;
  transform: translateY(-4px);
  pointer-events: none;
  transition: opacity 0.15s ease, transform 0.15s ease;
  z-index: 60;
}

@media (prefers-color-scheme: dark) {
  .user-menu {
    background: rgba(20, 20, 30, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }
}

.user-menu.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.user-menu-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  width: 100%;
  padding: 0.55rem 0.75rem;
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  text-align: left;
  transition: all 0.15s ease;
}

.user-menu-item:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.user-menu-divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 0.35rem 0;
}

/* =====================================================
   SIDEBAR NAV
   ===================================================== */

.dash-nav {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: 16px;
  padding: 0.5rem;
}

.dash-nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.65rem 0.85rem;
  border-radius: 10px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  text-align: left;
  transition: all 0.2s ease;
}

.dash-nav-item:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.dash-nav-item.active {
  background: var(--accent-muted);
  color: var(--accent-text);
  box-shadow: none;
}

.dash-nav-item.active svg {
  color: var(--accent);
}

.dash-nav-item svg {
  flex-shrink: 0;
  color: var(--text-tertiary);
  transition: color 0.2s ease;
}

/* Mobile nav select */
.mobile-nav-select {
  display: none;
}

@media (max-width: 1023px) {
  .mobile-nav-select {
    display: block;
  }
  .desktop-nav {
    display: none !important;
  }
}

/* =====================================================
   STATS
   ===================================================== */

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: 16px;
  padding: 1.25rem;
  transition: all 0.3s ease;
}

.stat-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-primary);
  box-shadow: var(--shadow-sm);
}

.stat-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.stat-delta {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent-text);
}

/* =====================================================
   PROGRESS BAR
   ===================================================== */

.progress-track {
  width: 100%;
  height: 8px;
  border-radius: 9999px;
  background: var(--bg-tertiary);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 9999px;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.25);
  transition: width 0.6s ease;
}

/* =====================================================
   LICENSE KEY CARD
   ===================================================== */

.license-display {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-radius: 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  box-shadow: var(--shadow-sm);
}

.license-key-text {
  font-family: 'JetBrains Mono', 'SF Mono', monospace;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  word-break: break-all;
  user-select: all;
}

/* =====================================================
   TABLE (billing history)
   ===================================================== */

.billing-table {
  width: 100%;
  border-collapse: collapse;
}

.billing-table th {
  text-align: left;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-primary);
  background: var(--bg-secondary);
}

.billing-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.875rem;
  color: var(--text-secondary);
  vertical-align: middle;
}

.billing-table tr:last-child td {
  border-bottom: none;
}

.billing-table tr:hover td {
  background: var(--bg-card-hover);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.status-paid {
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  color: var(--success-text);
}

.status-trial {
  background: var(--trial-bg);
  border: 1px solid var(--trial-border);
  color: var(--trial-text);
}

.status-failed {
  background: var(--failed-bg);
  border: 1px solid var(--failed-border);
  color: var(--failed-text);
}

/* Billing loading skeleton (#55). Used while /api/billing/receipts resolves. */
.billing-skel {
  display: block;
  height: 0.85rem;
  border-radius: 4px;
  background: linear-gradient(
    90deg,
    var(--accent-muted) 0%,
    var(--bg-card-hover) 50%,
    var(--accent-muted) 100%
  );
  background-size: 200% 100%;
  animation: billing-skel-shimmer 1.4s linear infinite;
}

@keyframes billing-skel-shimmer {
  0%   { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

@media (prefers-reduced-motion: reduce) {
  .billing-skel {
    animation: none;
  }
}

/* =====================================================
   TOGGLE SWITCH
   ===================================================== */

.toggle {
  position: relative;
  display: inline-block;
  width: 42px;
  height: 24px;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--toggle-track);
  border: 1px solid var(--toggle-border);
  border-radius: 9999px;
  transition: all 0.25s ease;
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  left: 3px;
  top: 50%;
  transform: translateY(-50%);
  border-radius: 50%;
  background: #fff;
  transition: all 0.25s ease;
  box-shadow: 0 2px 4px rgba(0,0,0,0.15);
}

.toggle input:checked + .toggle-slider {
  background: var(--accent);
  border-color: var(--accent);
}

.toggle input:checked + .toggle-slider::before {
  left: 21px;
}

/* =====================================================
   SECTION HEADING
   ===================================================== */

.section-heading {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.section-sub {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.card-sub {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  margin-top: 0.2rem;
}

/* =====================================================
   MODAL
   ===================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: var(--modal-backdrop);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  width: 100%;
  max-width: 440px;
  background: var(--modal-bg);
  border: 1px solid var(--border-primary);
  border-radius: 20px;
  padding: 1.75rem;
  box-shadow: var(--shadow-lg);
  transform: translateY(10px) scale(0.98);
  transition: transform 0.2s ease;
  color: var(--text-primary);
}

.modal-backdrop.open .modal-card {
  transform: translateY(0) scale(1);
}

/* =====================================================
   TOASTS
   ===================================================== */

.toast {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  min-width: 260px;
  max-width: 360px;
  padding: 0.85rem 1rem;
  background: var(--toast-bg);
  border: 1px solid var(--toast-border);
  border-left: 3px solid var(--text-tertiary);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 0.85rem;
  box-shadow: var(--toast-shadow);
  pointer-events: auto;
  transform: translateX(20px);
  opacity: 0;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.toast.visible {
  transform: translateX(0);
  opacity: 1;
}

.toast-success {
  border-left-color: #10b981;
  color: var(--text-primary);
}

.toast-success .toast-icon {
  color: #10b981;
}

.toast-error {
  border-left-color: #ef4444;
  color: var(--text-primary);
}

.toast-error .toast-icon {
  color: #ef4444;
}

.toast-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* =====================================================
   TAB PANELS
   ===================================================== */

.panel {
  display: none;
}

.panel.active {
  display: block;
  animation: panelFade 0.3s ease;
}

@keyframes panelFade {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* =====================================================
   SELECTION / SCROLLBAR
   ===================================================== */

::selection {
  background: var(--selection-bg);
  color: var(--selection-color);
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
}

/* =====================================================
   RESPONSIVE
   ===================================================== */

@media (max-width: 640px) {
  .wordmark {
    font-size: 1.1rem;
  }

  .section-heading {
    font-size: 1.25rem;
  }

  .stat-value {
    font-size: 1.45rem;
  }

  .license-display {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }

  .license-key-text {
    font-size: 0.8rem;
  }

  .billing-table th,
  .billing-table td {
    padding: 0.65rem 0.5rem;
    font-size: 0.75rem;
  }
}