/* ── Reset & Base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:           #0d0f18;
  --surface:      #13162a;
  --surface-2:    #1c2040;
  --border:       rgba(255,255,255,0.07);
  --accent:       #6c63ff;
  --accent-glow:  rgba(108,99,255,0.35);
  --up:           #22d86e;
  --up-bg:        rgba(34,216,110,0.12);
  --down:         #ff4d6a;
  --down-bg:      rgba(255,77,106,0.12);
  --text:         #e2e4f0;
  --text-muted:   #7b80a0;
  --radius:       14px;
  --radius-sm:    8px;
  --shadow:       0 8px 32px rgba(0,0,0,0.4);
  --transition:   0.2s ease;
}

html { scroll-behavior: smooth; }

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

/* Soft radial glow behind everything */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 40% at 20% 0%, rgba(108,99,255,0.15) 0%, transparent 70%),
    radial-gradient(ellipse 50% 30% at 80% 100%, rgba(34,216,110,0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ── Header ──────────────────────────────────────────────────────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,15,24,0.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 600;
}

.logo-icon { font-size: 1.4rem; }
.logo-text strong { color: var(--accent); }

.header-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── Main ────────────────────────────────────────────────────────────────── */
.main {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

/* ── Stats bar ───────────────────────────────────────────────────────────── */
.stats-bar {
  display: flex;
  gap: 1rem;
}

.stat {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  transition: var(--transition);
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
}

.stat-label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .06em; }

.stat-up   .stat-value { color: var(--up); }
.stat-down .stat-value { color: var(--down); }

/* ── Glass card ──────────────────────────────────────────────────────────── */
.glass {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

/* ── Add form ────────────────────────────────────────────────────────────── */
.add-section { padding: 1.5rem; }

.section-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.add-form {
  display: flex;
  gap: 0.75rem;
}

.input {
  flex: 1;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.65rem 1rem;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

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

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1.2rem;
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 18px var(--accent-glow);
}
.btn-primary:hover:not(:disabled) { box-shadow: 0 6px 26px var(--accent-glow); }

.btn-secondary {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover:not(:disabled) { background: var(--surface); }

.btn-icon { font-size: 1rem; }

/* ── Spin animation for refresh button ───────────────────────────────────── */
.spinning { animation: spin 0.8s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Form error ──────────────────────────────────────────────────────────── */
.form-error {
  margin-top: 0.6rem;
  font-size: 0.82rem;
  color: var(--down);
}
.hidden { display: none !important; }

/* ── Empty state ─────────────────────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 4rem 1rem;
  color: var(--text-muted);
  text-align: center;
}
.empty-icon { font-size: 2.5rem; }

/* ── Sites grid ──────────────────────────────────────────────────────────── */
.sites-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

/* ── Site card ───────────────────────────────────────────────────────────── */
.site-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  animation: cardIn 0.35s ease;
}

.site-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
}

.site-card.is-up   { border-left: 3px solid var(--up); }
.site-card.is-down { border-left: 3px solid var(--down); }
.site-card.is-error{ border-left: 3px solid #f5a623; }

@keyframes cardIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}

.card-url {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  word-break: break-all;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.card-url a { color: inherit; text-decoration: none; }
.card-url a:hover { text-decoration: underline; color: var(--accent); }

.badge {
  flex-shrink: 0;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.badge-up    { background: var(--up-bg);   color: var(--up); }
.badge-down  { background: var(--down-bg); color: var(--down); }
.badge-error { background: rgba(245,166,35,0.12); color: #f5a623; }

.card-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.meta-item span { font-weight: 600; color: var(--text); }

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-checked { font-size: 0.72rem; color: var(--text-muted); }

.btn-delete {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 1rem;
  padding: 0.2rem 0.4rem;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}
.btn-delete:hover { color: var(--down); background: var(--down-bg); }

/* ── Loading pulse ───────────────────────────────────────────────────────── */
.card-loading::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.04), transparent);
  animation: shimmer 1.2s infinite;
}
@keyframes shimmer { from { transform: translateX(-100%); } to { transform: translateX(100%); } }

/* ── Toast ───────────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1.2rem;
  font-size: 0.875rem;
  color: var(--text);
  box-shadow: var(--shadow);
  z-index: 999;
  animation: toastIn 0.3s ease;
}
@keyframes toastIn { from { opacity:0; transform: translateY(10px); } to { opacity:1; transform: translateY(0); } }

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .stats-bar { flex-direction: row; }
  .add-form { flex-direction: column; }
  .btn-primary { width: 100%; justify-content: center; }
  .sites-grid { grid-template-columns: 1fr; }
}