/* ==============================================
   urlbit-ui.css — URLbit Pro Shortner Clone
   Exact replica of https://urlbit.pro styles
   ============================================== */

:root {
  --ub-primary: #4f46e5;
  --ub-primary-2: #7c3aed;
  --ub-primary-soft: #eef2ff;
  --ub-ink: #0f172a;
  --ub-muted: #64748b;
  --ub-line: #e5e7eb;
  --ub-bg: #f8fafc;
  --ub-radius: 16px;
  --ub-radius-sm: 10px;
  --ub-shadow: 0 1px 2px rgba(15,23,42,.04), 0 8px 24px rgba(15,23,42,.06);
  --ub-shadow-lg: 0 20px 50px -12px rgba(79,70,229,.25);
}

/* ---------- Global ---------- */
*, *::before, *::after { box-sizing: border-box; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #fff;
  color: var(--ub-ink);
  margin: 0;
}

/* ---------- Header ---------- */
#main-header {
  background: #fff;
  border-bottom: 1px solid var(--ub-line);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-logo h2 {
  background: linear-gradient(90deg, var(--ub-primary), var(--ub-primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent !important;
  font-size: 1.3rem;
}

.navbar-toggle-icon {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}
.navbar-toggle-icon span {
  display: block;
  width: 22px;
  height: 2px;
  background: #64748b;
  border-radius: 2px;
  transition: all .3s ease;
}

/* ---------- Hero ---------- */
.ub-hero {
  position: relative;
  padding: 56px 0 40px;
  overflow: hidden;
}
.ub-hero::before {
  content: "";
  position: absolute;
  inset: -200px -100px auto -100px;
  height: 520px;
  background:
    radial-gradient(600px 300px at 20% 30%, rgba(124,58,237,.12), transparent 60%),
    radial-gradient(500px 280px at 80% 20%, rgba(79,70,229,.12), transparent 60%);
  z-index: 0;
  pointer-events: none;
}
.ub-hero .container { position: relative; z-index: 1; }

.ub-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .8rem;
  font-weight: 600;
  color: var(--ub-primary);
  background: var(--ub-primary-soft);
  padding: 6px 12px;
  border-radius: 999px;
}

.ub-title {
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--ub-ink);
  margin: 14px 0 8px;
  line-height: 1.15;
}
.ub-title span {
  background: linear-gradient(90deg, var(--ub-primary), var(--ub-primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.ub-sub {
  color: var(--ub-muted);
  font-size: 1.05rem;
  margin: 0 auto 28px;
  max-width: 520px;
}

/* ---------- Card ---------- */
.ub-card {
  background: #fff;
  border: 1px solid var(--ub-line);
  border-radius: var(--ub-radius);
  box-shadow: var(--ub-shadow-lg);
  padding: 10px;
  max-width: 760px;
  margin: 0 auto;
  text-align: left;
}

/* Segmented tabs */
.ub-tabs {
  display: flex;
  gap: 4px;
  background: var(--ub-bg);
  border-radius: 12px;
  padding: 4px;
  margin: 0 0 6px;
  list-style: none;
}
.ub-tabs .nav-item { flex: 1; }
.ub-tabs .nav-link {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--ub-muted);
  font-weight: 600;
  font-size: .92rem;
  padding: 10px 8px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all .2s ease;
  cursor: pointer;
}
.ub-tabs .nav-link:hover { color: var(--ub-ink); }
.ub-tabs .nav-link.active {
  background: #fff;
  color: var(--ub-primary);
  box-shadow: 0 1px 3px rgba(15,23,42,.1);
}
.ub-tabs .nav-link i { font-size: .9rem; }

.ub-pane { padding: 12px 10px 10px; }

/* Tab info bar */
.ub-tab-info {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--ub-primary-soft);
  border-radius: 10px;
  padding: 10px 14px;
  margin-bottom: 14px;
  font-size: .88rem;
  color: var(--ub-primary);
  font-weight: 500;
}
.ub-tab-info i { font-size: 1rem; flex-shrink: 0; }

/* Main input row */
.ub-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
}
.ub-input {
  flex: 1;
  min-width: 0;
  border: 1.5px solid var(--ub-line);
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 1rem;
  color: var(--ub-ink);
  background: #fff;
  transition: border-color .15s, box-shadow .15s;
  outline: 0;
  width: 100%;
  font-family: inherit;
}
.ub-input:focus {
  border-color: var(--ub-primary);
  box-shadow: 0 0 0 4px rgba(79,70,229,.12);
}
.ub-input.is-invalid { border-color: #ef4444; }
.ub-input.sm {
  padding: 11px 14px;
  font-size: .93rem;
  border-radius: 10px;
}

.ub-btn {
  border: 0;
  border-radius: 12px;
  padding: 0 24px;
  font-weight: 700;
  font-size: .98rem;
  color: #fff;
  background: linear-gradient(135deg, var(--ub-primary), var(--ub-primary-2));
  box-shadow: 0 6px 16px -6px rgba(79,70,229,.6);
  transition: transform .15s, box-shadow .15s;
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 52px;
  font-family: inherit;
}
.ub-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px -6px rgba(79,70,229,.55);
  color: #fff;
}
.ub-btn:active { transform: translateY(0); }

.ub-more {
  display: inline-block;
  margin-top: 10px;
  font-size: .88rem;
  color: var(--ub-muted);
  text-decoration: none;
  font-weight: 500;
}
.ub-more:hover { color: var(--ub-primary); }

.ub-label {
  display: block;
  font-size: .82rem;
  font-weight: 600;
  color: var(--ub-muted);
  margin-bottom: 4px;
}

.ub-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}

/* Lock/sign-in panel */
.ub-lock {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 6px;
  flex-wrap: wrap;
}
.ub-lock .ic {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--ub-primary-soft);
  color: var(--ub-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.ub-lock div:not(.ic) { flex: 1; min-width: 160px; }
.ub-lock h6 { margin: 0 0 2px; font-weight: 700; font-size: .97rem; }
.ub-lock p { margin: 0; font-size: .88rem; color: var(--ub-muted); }
.ub-lock .ub-btn { height: 40px; padding: 0 18px; font-size: .9rem; border-radius: 10px; }

/* ---------- Result ---------- */
.ub-result {
  display: flex;
  align-items: center;
  gap: 16px;
  background: #f0fdf4;
  border: 1.5px solid #86efac;
  border-radius: var(--ub-radius);
  padding: 16px 20px;
  max-width: 760px;
  margin: 16px auto 0;
  flex-wrap: wrap;
}
.ub-result #qr-result img {
  width: 72px;
  height: 72px;
  border-radius: 8px;
}
.ub-result h6 {
  margin: 0 0 4px;
  color: #16a34a;
  font-weight: 700;
}
.short-url-display {
  display: block;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ub-primary);
  word-break: break-all;
  margin-bottom: 4px;
}
.small-link {
  font-size: .85rem;
  color: var(--ub-muted);
  text-decoration: none;
  font-weight: 500;
}
.small-link:hover { color: var(--ub-primary); }

/* ---------- Features grid ---------- */
.ub-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 36px;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}
.ub-feature {
  background: #fff;
  border: 1px solid var(--ub-line);
  border-radius: var(--ub-radius-sm);
  padding: 20px;
  transition: box-shadow .2s, transform .2s;
}
.ub-feature:hover {
  box-shadow: var(--ub-shadow);
  transform: translateY(-2px);
}
.ub-feature .ic {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--ub-primary-soft);
  color: var(--ub-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  margin-bottom: 10px;
}
.ub-feature h6 {
  font-weight: 700;
  margin: 0 0 4px;
  font-size: .95rem;
}
.ub-feature p {
  font-size: .85rem;
  color: var(--ub-muted);
  margin: 0;
  line-height: 1.5;
}

/* ---------- Sections ---------- */
.ub-section-title {
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--ub-ink);
  margin-bottom: 8px;
}
.ub-section-sub {
  color: var(--ub-muted);
  max-width: 640px;
  margin-bottom: 0;
}

#adsterra-monetag { background: var(--ub-bg); }

/* ---------- FAQ ---------- */
.ub-faq {
  margin-top: 24px;
  max-width: 760px;
}
.ub-faq .accordion-item {
  border: 1px solid var(--ub-line);
  border-radius: var(--ub-radius-sm) !important;
  margin-bottom: 8px;
  overflow: hidden;
}
.ub-faq .accordion-button {
  font-weight: 600;
  font-size: .97rem;
  background: #fff;
  color: var(--ub-ink);
  box-shadow: none !important;
  padding: 16px 20px;
}
.ub-faq .accordion-button:not(.collapsed) {
  color: var(--ub-primary);
  background: var(--ub-primary-soft);
}
.ub-faq .accordion-button::after {
  filter: none;
}
.ub-faq .accordion-body {
  font-size: .93rem;
  color: var(--ub-muted);
  line-height: 1.6;
  padding: 14px 20px 18px;
}

/* ---------- Footer ---------- */
.ub-footer {
  background: var(--ub-ink);
  color: rgba(255,255,255,.7);
  padding: 48px 0 24px;
  margin-top: 60px;
}
.ub-footer .brand {
  font-size: 1.2rem;
  font-weight: 900;
  color: #fff;
  text-decoration: none;
  letter-spacing: -.5px;
  display: block;
  margin-bottom: 6px;
}
.ub-footer .tag {
  font-size: .87rem;
  color: rgba(255,255,255,.5);
  margin: 0;
}
.ub-footer .links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  justify-content: flex-end;
}
.ub-footer .links a {
  color: rgba(255,255,255,.6);
  text-decoration: none;
  font-size: .9rem;
  transition: color .15s;
}
.ub-footer .links a:hover { color: #fff; }
.ub-footer .bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  border-top: 1px solid rgba(255,255,255,.1);
  margin-top: 32px;
  padding-top: 20px;
  font-size: .83rem;
  color: rgba(255,255,255,.45);
}
.ub-footer .bottom a {
  color: rgba(255,255,255,.5);
  text-decoration: none;
  transition: color .15s;
}
.ub-footer .bottom a:hover { color: rgba(255,255,255,.85); }

/* ---------- Buttons (Bootstrap overrides) ---------- */
.btn-primary {
  background: linear-gradient(135deg, var(--ub-primary), var(--ub-primary-2)) !important;
  border: 0 !important;
  border-radius: 10px !important;
  font-weight: 600 !important;
  transition: transform .15s, box-shadow .15s !important;
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -6px rgba(79,70,229,.5) !important;
}
.btn-outline-secondary {
  border-radius: 10px !important;
  font-weight: 600 !important;
}

/* ---------- Scroll to top ---------- */
#scroll-to-top {
  width: 42px;
  height: 42px;
  display: flex !important;
  align-items: center;
  justify-content: center;
  transition: opacity .3s, transform .3s;
}

/* ---------- Dashboard ---------- */
.dash-card {
  background: #fff;
  border: 1px solid var(--ub-line);
  border-radius: var(--ub-radius);
  padding: 20px 24px;
  margin-bottom: 16px;
  transition: box-shadow .2s;
}
.dash-card:hover { box-shadow: var(--ub-shadow); }
.dash-stat {
  font-size: 2rem;
  font-weight: 800;
  color: var(--ub-primary);
  line-height: 1;
}
.dash-label {
  font-size: .85rem;
  color: var(--ub-muted);
  font-weight: 500;
}
.url-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--ub-line);
  flex-wrap: wrap;
}
.url-row:last-child { border-bottom: 0; }
.url-short {
  font-weight: 700;
  color: var(--ub-primary);
  font-size: .95rem;
  text-decoration: none;
  flex-shrink: 0;
}
.url-long {
  flex: 1;
  font-size: .85rem;
  color: var(--ub-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}
.url-clicks {
  font-size: .85rem;
  font-weight: 700;
  color: var(--ub-ink);
  flex-shrink: 0;
}
.url-actions { display: flex; gap: 6px; flex-shrink: 0; }
.url-actions a, .url-actions button {
  font-size: .78rem;
  padding: 4px 10px;
  border-radius: 7px;
  font-weight: 600;
  cursor: pointer;
}

/* ---------- Login / Register ---------- */
.auth-card {
  background: #fff;
  border: 1px solid var(--ub-line);
  border-radius: var(--ub-radius);
  box-shadow: var(--ub-shadow-lg);
  padding: 36px 32px;
  max-width: 420px;
  margin: 60px auto;
}
.auth-card h2 {
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: 6px;
}
.auth-divider {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ub-muted);
  font-size: .85rem;
  margin: 16px 0;
}
.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--ub-line);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .ub-features {
    grid-template-columns: 1fr;
  }
  .ub-grid {
    grid-template-columns: 1fr;
  }
  .ub-footer .links {
    justify-content: flex-start;
  }
  .ub-footer .bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .ub-row {
    flex-direction: column;
  }
  .ub-btn {
    width: 100%;
    justify-content: center;
    height: 48px;
  }
  .ub-tabs .nav-link span {
    display: none;
  }
  .ub-tabs .nav-link i {
    font-size: 1.1rem;
  }
}

@media (max-width: 480px) {
  .ub-title { font-size: 1.8rem; }
  .auth-card { padding: 24px 18px; margin: 30px auto; }
}