/* ============================================================
   Squibla — Dark Mode Crypto Ad Marketplace
   ============================================================ */

/* --- Reset & Variables --- */
:root {
  --bg: #0a0a0f;
  --bg-secondary: #0e0e16;
  --card: #12121a;
  --card-hover: #161620;
  --border: #1e1e2e;
  --border-light: #2a2a3a;
  --text: #e0e0e0;
  --text-muted: #7a7a8e;
  --text-dim: #555568;
  --cyan: #00d4ff;
  --cyan-dim: rgba(0, 212, 255, 0.15);
  --purple: #8b5cf6;
  --purple-dim: rgba(139, 92, 246, 0.15);
  --success: #10b981;
  --success-dim: rgba(16, 185, 129, 0.15);
  --warning: #f59e0b;
  --warning-dim: rgba(245, 158, 11, 0.15);
  --error: #ef4444;
  --error-dim: rgba(239, 68, 68, 0.15);
  --pink: #ec4899;
  --gradient-primary: linear-gradient(135deg, #8b5cf6, #00d4ff);
  --gradient-hero: linear-gradient(135deg, #0a0a0f 0%, #12121a 50%, #0a0a0f 100%);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.08);
  --transition: all 0.2s ease;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--cyan); text-decoration: none; transition: var(--transition); }
a:hover { color: #33dfff; }

/* --- Navbar --- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}

.navbar-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
}

.nav-brand .logo-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 900;
}

.nav-brand .brand-tag {
  font-size: 10px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 99px;
  background: var(--purple-dim);
  color: var(--purple);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.nav-links a {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
}

.nav-links a:hover, .nav-links a.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.nav-links a.active {
  color: var(--cyan);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Notification bell */
.notif-bell {
  position: relative;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
}

.notif-bell:hover { color: var(--cyan); background: rgba(255, 255, 255, 0.05); }

.notif-badge {
  position: absolute;
  top: 2px;
  right: 2px;
  min-width: 18px;
  height: 18px;
  border-radius: 9px;
  background: var(--error);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

.notif-badge.hidden { display: none; }

/* User menu */
.user-menu {
  position: relative;
}

.user-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition);
}

.user-btn:hover { border-color: var(--cyan); }

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
}

.user-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 200px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px;
  box-shadow: var(--shadow);
  display: none;
  z-index: 150;
}

.user-dropdown.open { display: block; }

.user-dropdown a, .user-dropdown button {
  display: block;
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  border: none;
  background: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font);
  transition: var(--transition);
}

.user-dropdown a:hover, .user-dropdown button:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
}

.user-dropdown .divider {
  height: 1px;
  background: var(--border);
  margin: 6px 0;
}

.user-dropdown .logout-btn { color: var(--error); }

/* Auth buttons for navbar */
.nav-auth-links { display: flex; gap: 8px; align-items: center; }

.btn-login {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  background: none;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
}

.btn-login:hover { border-color: var(--cyan); color: var(--cyan); }

/* --- Container --- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.page-content {
  padding: 32px 0 64px;
}

/* --- Hero Section --- */
.hero {
  position: relative;
  padding: 100px 0 80px;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.06) 0%, rgba(139, 92, 246, 0.04) 40%, transparent 70%);
  pointer-events: none;
}

.hero h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
  position: relative;
}

.hero h1 .gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .subtitle {
  font-size: 20px;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.6;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.2);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 212, 255, 0.3);
  color: #fff;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--purple);
  color: #fff;
}

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #0ea572; color: #fff; }

.btn-danger { background: var(--error); color: #fff; }
.btn-danger:hover { background: #dc3535; color: #fff; }

.btn-warning { background: var(--warning); color: #000; }

.btn-ghost {
  background: none;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }

.btn-sm { padding: 6px 14px; font-size: 12px; }
.btn-lg { padding: 16px 32px; font-size: 16px; }
.btn-icon { padding: 8px; min-width: 36px; justify-content: center; }

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

/* --- Cards --- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
}

.card:hover { border-color: var(--border-light); }
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
}

.card-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* --- Stats Cards --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
}

.stat-card.cyan::before { background: var(--cyan); }
.stat-card.purple::before { background: var(--purple); }
.stat-card.success::before { background: var(--success); }
.stat-card.warning::before { background: var(--warning); }
.stat-card.pink::before { background: var(--pink); }

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
}

.stat-change {
  font-size: 12px;
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.stat-change.up { color: var(--success); }
.stat-change.down { color: var(--error); }

/* --- How It Works --- */
.how-it-works {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 16px;
  margin-bottom: 48px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.step-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  transition: var(--transition);
  position: relative;
}

.step-card:hover {
  border-color: var(--cyan);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--cyan-dim);
  color: var(--cyan);
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.step-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #fff;
}

.step-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --- Crypto Logos --- */
.crypto-section {
  padding: 60px 0;
  text-align: center;
}

.crypto-logos {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.crypto-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
  min-width: 100px;
}

.crypto-logo:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.crypto-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
}

.crypto-icon.usdt { background: rgba(38, 161, 123, 0.2); color: #26a17b; }
.crypto-icon.trx { background: rgba(235, 0, 27, 0.2); color: #eb001b; }
.crypto-icon.sol { background: rgba(153, 69, 255, 0.2); color: #9945ff; }
.crypto-icon.btc { background: rgba(247, 147, 26, 0.2); color: #f7931a; }
.crypto-icon.usdc { background: rgba(39, 117, 202, 0.2); color: #2775ca; }

.crypto-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

/* --- Live Stats Bar --- */
.live-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  padding: 48px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin: 40px 0;
}

.live-stat {
  text-align: center;
}

.live-stat-value {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
}

.live-stat-label {
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 4px;
}

/* --- Auth Page --- */
.auth-container {
  max-width: 480px;
  margin: 60px auto;
}

.auth-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
}

.auth-tab {
  flex: 1;
  padding: 16px;
  text-align: center;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  transition: var(--transition);
  background: none;
  border-left: none;
  border-right: none;
  border-top: none;
  font-family: var(--font);
}

.auth-tab:hover { color: var(--text); }
.auth-tab.active {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.auth-form {
  padding: 32px;
  display: none;
}

.auth-form.active { display: block; }

/* --- Forms --- */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  font-family: var(--font);
  transition: var(--transition);
  outline: none;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px var(--cyan-dim);
}

.form-input::placeholder { color: var(--text-dim); }

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%237a7a8e' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
  font-family: var(--font-mono);
  font-size: 12px;
}

.form-row {
  display: grid;
  gap: 16px;
}

.form-row-2 { grid-template-columns: 1fr 1fr; }
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }

.form-hint {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 4px;
}

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
}

.form-check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--cyan);
}

.form-check-label {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Role selector for registration */
.role-selector {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.role-option {
  padding: 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  text-align: center;
  transition: var(--transition);
}

.role-option:hover { border-color: var(--border-light); }

.role-option.selected {
  border-color: var(--cyan);
  background: var(--cyan-dim);
}

.role-option input { display: none; }

.role-icon {
  font-size: 24px;
  margin-bottom: 8px;
}

.role-title {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
}

.role-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* --- Tables --- */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

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

th {
  padding: 12px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

td {
  padding: 12px 16px;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

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

tr:hover td { background: rgba(255, 255, 255, 0.02); }

.mono { font-family: var(--font-mono); font-size: 12px; }

/* --- Badges --- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-active, .badge-confirmed { background: var(--success-dim); color: var(--success); }
.badge-pending, .badge-pending_approval, .badge-draft { background: var(--warning-dim); color: var(--warning); }
.badge-rejected, .badge-suspended, .badge-flagged, .badge-failed { background: var(--error-dim); color: var(--error); }
.badge-paid, .badge-completed { background: var(--purple-dim); color: var(--purple); }
.badge-sent { background: var(--cyan-dim); color: var(--cyan); }

/* --- Dashboard Layout --- */
.dash-grid {
  display: grid;
  gap: 24px;
}

.dash-grid-2 { grid-template-columns: 1fr 1fr; }
.dash-grid-3 { grid-template-columns: 1fr 1fr 1fr; }

/* --- Countdown Timer --- */
.countdown {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--warning);
  font-weight: 600;
}

.countdown.expired { color: var(--error); }

/* --- Offer Card --- */
.offer-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 12px;
}

.offer-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.offer-amount {
  font-size: 24px;
  font-weight: 700;
  color: var(--cyan);
}

.offer-token {
  font-size: 14px;
  color: var(--text-muted);
  margin-left: 4px;
}

.offer-split {
  font-size: 13px;
  padding: 4px 12px;
  border-radius: 99px;
  background: var(--success-dim);
  color: var(--success);
  font-weight: 600;
}

.offer-details {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 16px;
  font-size: 13px;
}

.offer-detail-label { color: var(--text-muted); }
.offer-detail-value { color: #fff; font-weight: 500; }

.offer-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

/* --- Wallet Card --- */
.wallet-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 8px;
}

.wallet-info { display: flex; align-items: center; gap: 12px; }

.wallet-token-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--purple-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--purple);
}

.wallet-address {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
}

/* --- Toast Notifications --- */
.toast-container {
  position: fixed;
  top: 80px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 14px 20px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  box-shadow: var(--shadow);
  animation: slideIn 0.3s ease;
  min-width: 300px;
  max-width: 420px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.toast-success { background: var(--success); color: #fff; }
.toast-error { background: var(--error); color: #fff; }
.toast-warning { background: var(--warning); color: #000; }
.toast-info { background: var(--card); border: 1px solid var(--cyan); color: var(--text); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOut {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(100%); opacity: 0; }
}

.toast.removing { animation: slideOut 0.3s ease forwards; }

/* --- Notification Panel --- */
.notif-panel {
  position: fixed;
  top: 64px;
  right: 0;
  width: 380px;
  max-height: calc(100vh - 64px);
  background: var(--card);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow);
  z-index: 200;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
}

.notif-panel.open { transform: translateX(0); }

.notif-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--card);
}

.notif-item {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
}

.notif-item:hover { background: rgba(255, 255, 255, 0.02); }
.notif-item.unread { border-left: 3px solid var(--cyan); }

.notif-item-title {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 4px;
}

.notif-item-body {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
}

.notif-item-time {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 6px;
}

/* --- Empty State --- */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.empty-state-desc {
  font-size: 13px;
  max-width: 320px;
  margin: 0 auto;
}

/* --- Loading Spinner --- */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--cyan);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

.loading-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
}

/* --- Section Tabs --- */
.section-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}

.section-tab {
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: var(--transition);
  white-space: nowrap;
  background: none;
  border-left: none;
  border-right: none;
  border-top: none;
  font-family: var(--font);
}

.section-tab:hover { color: var(--text); }
.section-tab.active { color: var(--cyan); border-bottom-color: var(--cyan); }

.section-panel { display: none; }
.section-panel.active { display: block; }

/* --- Footer --- */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

.footer a { color: var(--text-muted); }
.footer a:hover { color: var(--cyan); }

/* --- Mobile Responsive --- */
@media (max-width: 768px) {
  .hero h1 { font-size: 36px; }
  .hero .subtitle { font-size: 16px; }
  .form-row-2, .form-row-3 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .dash-grid-2, .dash-grid-3 { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .live-stats { gap: 24px; }
  .nav-links { display: none; }
  .offer-details { grid-template-columns: 1fr; }
  .notif-panel { width: 100%; }
  .container { padding: 0 16px; }
  .hero { padding: 60px 0 40px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .hero-ctas { flex-direction: column; align-items: center; }
  .crypto-logos { gap: 16px; }
}

/* --- Utility --- */
.text-cyan { color: var(--cyan); }
.text-purple { color: var(--purple); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-error { color: var(--error); }
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.p-0 { padding: 0; }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }

.hidden { display: none !important; }
.w-full { width: 100%; }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-light); }