/* ============================================================
   NEXURF - Main Stylesheet (Dark Mode Default)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #16161f;
  --bg-input: #1e1e2a;
  --border: #2a2a3a;
  --text-primary: #f0f0ff;
  --text-secondary: #8888aa;
  --text-muted: #555570;
  --accent: #00d4ff;
  --accent-hover: #00b8e0;
  --accent-glow: rgba(0, 212, 255, 0.15);
  --green: #00e676;
  --red: #ff4d6d;
  --yellow: #ffd600;
  --orange: #ff9800;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --transition: all 0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-hover); }

/* ---- Layout ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-sm { max-width: 600px; margin: 0 auto; padding: 0 24px; }

/* ---- Navbar ---- */
.navbar {
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0 24px;
}
.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.navbar-brand {
  font-size: 1.4rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.navbar-nav { display: flex; align-items: center; gap: 8px; }
.navbar-nav a {
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
}
.navbar-nav a:hover { color: var(--text-primary); background: var(--bg-card); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #000;
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: #000;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--accent-glow);
}
.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--bg-input); color: var(--text-primary); }
.btn-danger { background: var(--red); color: #fff; }
.btn-danger:hover { background: #e03050; color: #fff; }
.btn-success { background: var(--green); color: #000; }
.btn-success:hover { background: #00c060; color: #000; }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; }
.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn-full { width: 100%; justify-content: center; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }

/* ---- Cards ---- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.card-title { font-size: 1rem; font-weight: 600; }

/* ---- Forms ---- */
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.form-control {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: 'Inter', sans-serif;
  transition: var(--transition);
  outline: none;
}
.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-control::placeholder { color: var(--text-muted); }
select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 100px; }

/* ---- Slider ---- */
.range-slider {
  width: 100%;
  -webkit-appearance: none;
  height: 6px;
  border-radius: 3px;
  background: var(--border);
  outline: none;
  cursor: pointer;
}
.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 8px var(--accent-glow);
}

/* ---- Badges / Status ---- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-active { background: rgba(0,230,118,0.15); color: var(--green); }
.badge-paused { background: rgba(255,152,0,0.15); color: var(--orange); }
.badge-pending { background: rgba(255,214,0,0.15); color: var(--yellow); }
.badge-rejected { background: rgba(255,77,109,0.15); color: var(--red); }
.badge-free { background: rgba(136,136,170,0.15); color: var(--text-secondary); }
.badge-silver { background: rgba(192,192,192,0.15); color: #c0c0c0; }
.badge-gold { background: rgba(255,214,0,0.15); color: var(--yellow); }

/* ---- Alerts ---- */
.alert {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin-bottom: 20px;
}
.alert-success { background: rgba(0,230,118,0.1); border: 1px solid rgba(0,230,118,0.3); color: var(--green); }
.alert-error { background: rgba(255,77,109,0.1); border: 1px solid rgba(255,77,109,0.3); color: var(--red); }
.alert-info { background: rgba(0,212,255,0.1); border: 1px solid rgba(0,212,255,0.3); color: var(--accent); }
.alert-warning { background: rgba(255,214,0,0.1); border: 1px solid rgba(255,214,0,0.3); color: var(--yellow); }

/* ---- Tables ---- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
thead th {
  text-align: left;
  padding: 12px 16px;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}
tbody td { padding: 14px 16px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:hover { background: var(--bg-input); }
tbody tr:last-child td { border-bottom: none; }

/* ---- Stats Cards ---- */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.stat-label { font-size: 0.8rem; color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 8px; }
.stat-value { font-size: 1.8rem; font-weight: 700; color: var(--text-primary); }
.stat-sub { font-size: 0.8rem; color: var(--text-secondary); margin-top: 4px; }

/* ---- Progress Bar ---- */
.progress-bar-wrap {
  background: var(--border);
  border-radius: 4px;
  height: 8px;
  overflow: hidden;
  margin: 8px 0;
}
.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #7c3aed);
  border-radius: 4px;
  transition: width 1s linear;
}

/* ---- Surf Engine ---- */
.surf-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  max-width: 600px;
  margin: 40px auto;
}
.surf-timer {
  font-size: 4rem;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  margin: 20px 0;
}
.surf-status { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 16px; }
.surf-site-url {
  font-size: 0.85rem;
  color: var(--text-muted);
  word-break: break-all;
  margin-bottom: 20px;
}

/* ---- Dashboard Layout ---- */
.dashboard-layout { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.sidebar-logo { font-size: 1.3rem; font-weight: 800; background: linear-gradient(135deg, var(--accent), #7c3aed); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 32px; padding: 0 8px; }
.sidebar-nav { display: flex; flex-direction: column; gap: 4px; }
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}
.sidebar-nav a:hover, .sidebar-nav a.active {
  background: var(--bg-card);
  color: var(--text-primary);
}
.sidebar-nav a.active { color: var(--accent); }
.main-content { padding: 32px; overflow-y: auto; }
.page-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 24px; }

/* ---- Modals ---- */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  width: 100%;
  max-width: 480px;
  box-shadow: var(--shadow);
}
.modal-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 20px; }
.hidden { display: none !important; }

/* ---- Landing Page ---- */
.hero {
  padding: 100px 24px;
  text-align: center;
  background: radial-gradient(ellipse at top, rgba(0,212,255,0.05) 0%, transparent 70%);
}
.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
}
.hero h1 span { background: linear-gradient(135deg, var(--accent), #7c3aed); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p { font-size: 1.2rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto 40px; }
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.features { padding: 80px 24px; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; max-width: 1200px; margin: 0 auto; }
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
}
.feature-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.feature-icon { font-size: 2rem; margin-bottom: 16px; }
.feature-title { font-size: 1rem; font-weight: 700; margin-bottom: 10px; }
.feature-desc { color: var(--text-secondary); font-size: 0.9rem; }

.pricing { padding: 80px 24px; }
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; max-width: 900px; margin: 0 auto; }
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  position: relative;
  transition: var(--transition);
}
.pricing-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 40px var(--accent-glow);
}
.pricing-badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--accent); color: #000; padding: 4px 16px; border-radius: 20px; font-size: 0.75rem; font-weight: 700; }
.pricing-name { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.pricing-price { font-size: 2.5rem; font-weight: 800; color: var(--accent); }
.pricing-price span { font-size: 0.9rem; color: var(--text-secondary); font-weight: 400; }
.pricing-features { list-style: none; margin: 20px 0; text-align: left; }
.pricing-features li { padding: 6px 0; font-size: 0.9rem; color: var(--text-secondary); }
.pricing-features li::before { content: '✓ '; color: var(--green); font-weight: 700; }

.section-title { text-align: center; font-size: 2rem; font-weight: 700; margin-bottom: 48px; }

/* ---- Auth Pages ---- */
.auth-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; }
.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 100%;
  max-width: 420px;
}
.auth-logo { text-align: center; font-size: 1.8rem; font-weight: 800; background: linear-gradient(135deg, var(--accent), #7c3aed); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 8px; }
.auth-subtitle { text-align: center; color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 32px; }
.auth-divider { text-align: center; color: var(--text-muted); font-size: 0.85rem; margin: 16px 0; }

/* ---- Footer ---- */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}
footer a { color: var(--text-secondary); }
footer a:hover { color: var(--accent); }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .dashboard-layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .main-content { padding: 20px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero { padding: 60px 16px; }
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ---- Captcha overlay ---- */
#captcha-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(8px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}
.captcha-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  max-width: 400px;
  width: 100%;
}
.captcha-question { font-size: 1.5rem; font-weight: 700; margin: 20px 0; color: var(--accent); }

/* ---- Credit allocation ---- */
.credit-row { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.credit-row .site-name { flex: 1; font-size: 0.9rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.credit-row input[type=number] { width: 100px; }

/* ---- Chart containers ---- */
.chart-container { position: relative; height: 250px; margin-top: 16px; }