:root {
  --bg: #0b1120;
  --panel: rgba(30, 41, 59, 0.35);
  --panel-hover: rgba(30, 41, 59, 0.55);
  --panel-border: rgba(255, 255, 255, 0.1);
  --panel-border-hover: rgba(20, 184, 166, 0.3);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent: #14b8a6;
  /* Vibrant teal */
  --accent-hover: #0d9488;
  --danger: #ef4444;
  --danger-border: rgba(239, 68, 68, 0.3);
  --success: #10b981;
  --locked-bg: rgba(15, 23, 42, 0.6);
  --input-bg: rgba(15, 23, 42, 0.5);

  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
  --blur: blur(16px);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text-main);
  background-color: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  line-height: 1.5;
}

/* Ambient Background Glows */
.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.15;
  z-index: 0;
  pointer-events: none;
}

.glow-teal {
  top: -100px;
  right: -100px;
  width: 50vw;
  height: 50vw;
  background: #14b8a6;
}

.glow-blue {
  bottom: -200px;
  left: -100px;
  width: 60vw;
  height: 60vw;
  background: #3b82f6;
}

.glow-gold {
  top: 40%;
  right: 10%;
  width: 30vw;
  height: 30vw;
  background: #f59e0b;
  opacity: 0.08;
}

/* Top Navigation Bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 17, 32, 0.75);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--panel-border);
}

.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--accent);
}

.brand-text {
  font-weight: 700;
  letter-spacing: 0.05em;
  font-size: 0.95rem;
  color: var(--text-main);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-summary {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.auth-btn {
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-main);
  padding: 6px 14px;
  border: 1px solid var(--panel-border);
  border-radius: 99px;
  background: var(--input-bg);
  transition: var(--transition);
}

.auth-btn:hover {
  background: var(--panel-hover);
  border-color: var(--text-muted);
}

/* Main Layout */
.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 80px;
  position: relative;
  z-index: 10;
}

/* Header & Tabs */
.page-header {
  margin-bottom: 32px;
}

.header-content h1 {
  font-size: 2.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 24px;
}

.tabs {
  display: flex;
  gap: 12px;
  border-bottom: 1px solid var(--panel-border);
  padding-bottom: 16px;
}

.tabs a {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 8px;
  transition: var(--transition);
}

.tabs a:hover:not(.disabled) {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.tabs a.active {
  color: var(--accent);
  background: rgba(20, 184, 166, 0.1);
  box-shadow: inset 0 0 0 1px rgba(20, 184, 166, 0.2);
}

.tabs a.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Panels */
.panel {
  animation: fadeIn 0.4s ease-out;
}

.panel-header {
  margin-bottom: 24px;
}

.panel-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.hint {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Grids & Cards */
.service-grid,
.tracking-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.card,
.tracking-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.card:hover,
.tracking-card:hover {
  background: var(--panel-hover);
  border-color: var(--panel-border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card.locked {
  background: var(--locked-bg);
  border-color: rgba(255, 255, 255, 0.05);
}

.card.locked:hover {
  transform: none;
  box-shadow: none;
  border-color: rgba(255, 255, 255, 0.05);
}

.tracking-card.subscribed,
.tracking-card.tracked {
  background: linear-gradient(180deg, rgba(20, 184, 166, 0.05) 0%, rgba(30, 41, 59, 0.4) 100%);
  border-color: rgba(20, 184, 166, 0.2);
}

.card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 4px 0;
}

.card p,
.tracking-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.tracking-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2px;
}

.tracking-card-top strong {
  font-size: 1.25rem;
}

.pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #cbd5e1;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  width: fit-content;
}

/* Actions & Buttons */
.actions {
  margin-top: auto;
  padding-top: 16px;
}

button,
.btn,
.btn-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--panel-border);
  color: var(--text-main);
  outline: none;
}

button:hover:not(:disabled),
.btn:hover:not(:disabled),
.btn-link:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--text-muted);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

button.primary,
.btn.primary,
.btn-link.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #042f2e;
  /* Dark teal for contrast */
  font-weight: 600;
}

button.primary:hover:not(:disabled),
.btn.primary:hover:not(:disabled),
.btn-link.primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}

.btn.secondary {
  background: var(--panel);
}

/* Prompts & Blocks */
.guest-prompt {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.8), rgba(15, 23, 42, 0.9));
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 32px;
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
  backdrop-filter: var(--blur);
}

.prompt-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(59, 130, 246, 0.1);
  color: #3b82f6;
  display: flex;
  align-items: center;
  justify-content: center;
}

.prompt-icon.alert {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

.prompt-text h3 {
  font-size: 1.25rem;
  margin-bottom: 4px;
}

.prompt-text p {
  color: var(--text-muted);
}

@media (max-width: 640px) {
  .guest-prompt {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
}

.block {
  background: rgba(30, 41, 59, 0.2);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 24px;
  margin-top: 24px;
}

.block h3 {
  font-size: 1.25rem;
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Forms & Inputs */
.form-group {
  margin-top: 20px;
}

.inline-form {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.glass-form input {
  flex: 1;
  min-width: 240px;
}

input[type="email"],
input[type="text"],
input[type="search"] {
  background: var(--input-bg);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  padding: 10px 16px;
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(20, 184, 166, 0.2);
}

input::placeholder {
  color: #64748b;
}

/* Specific modules */
.email-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.email-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(30, 41, 59, 0.4);
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.subscription-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.subscription-row {
  display: grid;
  grid-template-columns: 1.5fr 1fr auto;
  gap: 16px;
  align-items: center;
  background: rgba(30, 41, 59, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 16px 20px;
  transition: var(--transition);
}

.subscription-row:hover {
  background: rgba(30, 41, 59, 0.6);
  border-color: rgba(255, 255, 255, 0.15);
}

.subscription-row.locked {
  background: var(--locked-bg);
  opacity: 0.8;
}

.subscription-row input[type="email"] {
  width: 100%;
}

.subscription-row label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  cursor: pointer;
  user-select: none;
  font-size: 0.9rem;
}

.subscription-row input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
}

@media (max-width: 800px) {
  .subscription-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

/* Search Box */
.mb-l {
  margin-bottom: 24px;
}

.search-input-wrapper {
  position: relative;
  width: 100%;
  max-width: 600px;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.search-input-wrapper input {
  width: 100%;
  padding-left: 44px;
  padding-right: 16px;
  height: 48px;
  border-radius: 24px;
  font-size: 1rem;
}

.tracking-current {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.tracking-current h4 {
  font-size: 1.25rem;
  margin-bottom: 20px;
}

/* Toast (Message Box) */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid var(--panel-border);
  color: var(--text-main);
  padding: 16px 24px;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: var(--blur);
  z-index: 1000;
  animation: slideUp 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.error {
  border-left: 4px solid var(--danger);
  border-color: var(--danger-border);
}

code {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.85em;
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
  color: #e2e8f0;
}

.hidden {
  display: none !important;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}