/* ================================================================
   TaskEarn Platform – Main Stylesheet
   Bootstrap 5 + Custom Design System
   ================================================================ */

/* ── Custom Properties ───────────────────────────────────────── */
:root {
  --primary:       #5b21b6;
  --primary-dark:  #4c1d95;
  --primary-light: #7c3aed;
  --secondary:     #06b6d4;
  --success:       #10b981;
  --danger:        #ef4444;
  --warning:       #f59e0b;
  --info:          #3b82f6;
  --dark:          #111827;
  --muted:         #6b7280;
  --light-bg:      #f8f7ff;
  --card-shadow:   0 4px 20px rgba(91,33,182,.08);
  --radius:        12px;
  --radius-lg:     18px;
  --transition:    .2s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--light-bg);
  color: var(--dark);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

a { transition: color var(--transition); }

/* ── Navbar ───────────────────────────────────────────────────── */
.bg-gradient-primary {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-light)) !important;
}

.navbar-brand { letter-spacing: -.5px; }

.navbar-nav .nav-link {
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 500;
  color: rgba(255,255,255,.85) !important;
  transition: background var(--transition), color var(--transition);
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  background: rgba(255,255,255,.15);
  color: #fff !important;
}

/* ── Avatar Circle ────────────────────────────────────────────── */
.avatar-circle {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: rgba(255,255,255,.25);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .85rem;
}

/* ── Cards ────────────────────────────────────────────────────── */
.card {
  border: none;
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(91,33,182,.12); }

/* Stat Cards */
.stat-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}
.stat-card .stat-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
}
.stat-card .stat-value { font-size: 1.9rem; font-weight: 700; line-height: 1; }
.stat-card .stat-label { font-size: .8rem; color: var(--muted); font-weight: 500; }

.stat-card.purple  { background: linear-gradient(135deg,#f3e8ff,#ede9fe); }
.stat-card.cyan    { background: linear-gradient(135deg,#cffafe,#e0f2fe); }
.stat-card.green   { background: linear-gradient(135deg,#d1fae5,#ecfdf5); }
.stat-card.orange  { background: linear-gradient(135deg,#fef3c7,#fff7ed); }

.stat-card.purple .stat-icon  { background:#ddd6fe; color:var(--primary); }
.stat-card.cyan .stat-icon    { background:#a5f3fc; color:#0891b2; }
.stat-card.green .stat-icon   { background:#6ee7b7; color:#059669; }
.stat-card.orange .stat-icon  { background:#fcd34d; color:#d97706; }

/* Task Cards */
.task-card {
  border-left: 4px solid var(--primary);
  transition: all var(--transition);
}
.task-card:hover { border-left-color: var(--primary-light); }
.task-card.twitter  { border-left-color: #1da1f2; }
.task-card.youtube  { border-left-color: #ff0000; }
.task-card.instagram{ border-left-color: #e1306c; }
.task-card.facebook { border-left-color: #1877f2; }
.task-card.tiktok   { border-left-color: #010101; }

/* Wallet Card */
.wallet-card {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
  color: #fff;
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}
.wallet-card::after {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 140px; height: 140px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
}
.wallet-card .balance-amount {
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -1px;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  border-radius: 8px;
  font-weight: 500;
  font-size: .875rem;
  transition: all var(--transition);
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border: none;
}
.btn-primary:hover { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); transform: translateY(-1px); }
.btn-outline-primary { color: var(--primary); border-color: var(--primary); }
.btn-outline-primary:hover { background: var(--primary); color: #fff; }

/* ── Tables ───────────────────────────────────────────────────── */
.table { font-size: .875rem; }
.table th {
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--muted);
  border-bottom: 2px solid #e9ecef;
  padding: .75rem 1rem;
}
.table td { padding: .75rem 1rem; vertical-align: middle; }
.table tbody tr { transition: background var(--transition); }
.table tbody tr:hover { background: rgba(91,33,182,.03); }

/* ── Badges ───────────────────────────────────────────────────── */
.badge { font-size: .72rem; font-weight: 600; padding: .35em .65em; border-radius: 6px; }

/* ── Forms ────────────────────────────────────────────────────── */
.form-control, .form-select {
  border-radius: 8px;
  border-color: #e5e7eb;
  font-size: .875rem;
  padding: .55rem .9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(91,33,182,.15);
}
.form-label { font-size: .875rem; font-weight: 500; margin-bottom: .35rem; }

/* ── Auth Pages ───────────────────────────────────────────────── */
.auth-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #f3e8ff 0%, #e0f2fe 100%);
  padding: 2rem 1rem;
}
.auth-card {
  width: 100%;
  max-width: 440px;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(91,33,182,.18);
}
.auth-header {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
  color: #fff;
  padding: 2rem;
  text-align: center;
}
.auth-body { background: #fff; padding: 2rem; }

/* ── Timer Display ────────────────────────────────────────────── */
.timer-display {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.timer-bar { height: 8px; border-radius: 4px; background: #e9ecef; overflow: hidden; }
.timer-bar-fill { height: 100%; background: linear-gradient(90deg, var(--success), var(--secondary)); transition: width 1s linear; }

/* ── Progress ─────────────────────────────────────────────────── */
.progress { height: 8px; border-radius: 4px; }
.progress-bar { background: linear-gradient(90deg, var(--primary), var(--primary-light)); }

/* ── Tab Switch Warning ───────────────────────────────────────── */
#tab-warning {
  display: none;
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(239,68,68,.9);
  color: #fff;
  z-index: 9999;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  text-align: center;
}
#tab-warning.visible { display: flex; }

/* ── Notification Items ───────────────────────────────────────── */
.notif-item { transition: background var(--transition); }
.notif-item:hover { background: #f9fafb !important; }

/* ── Alert ────────────────────────────────────────────────────── */
.alert { border-radius: var(--radius); border: none; font-size: .875rem; }
.alert-success { background: #d1fae5; color: #065f46; }
.alert-danger  { background: #fee2e2; color: #991b1b; }
.alert-warning { background: #fef3c7; color: #92400e; }
.alert-info    { background: #dbeafe; color: #1e40af; }

/* ── Toast ─────────────────────────────────────────────────────── */
.toast { border: none; border-radius: var(--radius); font-size: .875rem; }

/* ── Sidebar / Referral ─────────────────────────────────────────── */
.referral-box {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}
.referral-box .ref-code {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 2px;
  font-family: monospace;
  background: rgba(255,255,255,.15);
  padding: .5rem 1rem;
  border-radius: 8px;
  display: inline-block;
}

/* ── Footer ───────────────────────────────────────────────────── */
.footer-bar { margin-top: auto; }
.footer-bar a { text-decoration: none; transition: color var(--transition); }
.footer-bar a:hover { color: var(--primary) !important; }

/* ── Landing Page ─────────────────────────────────────────────── */
.hero-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 60%, var(--secondary) 100%);
  color: #fff;
  padding: 5rem 0;
  position: relative;
  overflow: hidden;
}
.hero-section::before {
  content: '';
  position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-section h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; }
.feature-icon { width: 60px; height: 60px; border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; margin: 0 auto 1rem; }

/* ── Upload Area ─────────────────────────────────────────────── */
.upload-area {
  border: 2px dashed #d1d5db;
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
}
.upload-area:hover, .upload-area.drag-over {
  border-color: var(--primary);
  background: rgba(91,33,182,.04);
}

/* ── Responsive ────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .stat-card .stat-value { font-size: 1.5rem; }
  .wallet-card .balance-amount { font-size: 1.8rem; }
  .timer-display { font-size: 2rem; }
}

@media (max-width: 576px) {
  .auth-card { border-radius: 14px; }
  .auth-body  { padding: 1.5rem; }
}