/* ── CSS Custom Properties ─────────────────────────────── */
:root {
  --color-bg: #0f1117;
  --color-surface: #1a1d27;
  --color-surface-2: #22263a;
  --color-border: #2e3348;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-up: #22c55e;
  --color-down: #ef4444;
  --color-pending: #f59e0b;
  --color-maintenance: #818cf8;
  --color-primary: #6366f1;
  --color-primary-hover: #818cf8;
  --radius: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --gap: 10px;
}

/* ── Reset + No-Scroll Foundation ─────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100vh;
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.5;
}

/* ── App Layout ────────────────────────────────────────── */
.app-layout {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* ── Header ────────────────────────────────────────────── */
.header {
  flex-shrink: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}
.header-inner {
  max-width: 100%;
  padding: 0 16px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.brand-icon { color: var(--color-primary); font-size: 1.2rem; }

/* ── Stats Bar ─────────────────────────────────────────── */
.stats-bar {
  flex-shrink: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 6px 16px;
  flex-wrap: nowrap;
  overflow-x: auto;
}
.stat { display: flex; flex-direction: column; gap: 1px; flex-shrink: 0; }
.stat-label { font-size: 0.65rem; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.06em; }
.stat-value { font-size: 0.95rem; font-weight: 700; }
.stat-value.stat-sm { font-size: 0.8rem; font-weight: 500; }
.stat-up .stat-value       { color: var(--color-up); }
.stat-down .stat-value     { color: var(--color-down); }
.stat-pending .stat-value  { color: var(--color-pending); }
.stat-maintenance .stat-value { color: var(--color-maintenance); }
.stat-divider { width: 1px; height: 28px; background: var(--color-border); flex-shrink: 0; }
.stat-spacer  { flex: 1; }

/* ── Toolbar ────────────────────────────────────────────── */
.toolbar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.filter-group { display: flex; gap: 4px; }
.filter-btn {
  padding: 4px 12px;
  border-radius: 100px;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  white-space: nowrap;
}
.filter-btn:hover { background: var(--color-surface-2); color: var(--color-text); }
.filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}
.search-input {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text);
  padding: 5px 10px;
  font-size: 0.8rem;
  outline: none;
  width: 220px;
  transition: border-color 0.15s;
}
.search-input:focus { border-color: var(--color-primary); }
.toolbar-spacer { flex: 1; }
.visible-count { font-size: 0.72rem; color: var(--color-text-muted); white-space: nowrap; }
.btn-check-all { background: rgba(99,102,241,.12); color: #818cf8; border: 1px solid rgba(99,102,241,.25); font-size: 0.78rem; padding: 4px 10px; }
.btn-check-all:hover:not(:disabled) { background: rgba(99,102,241,.22); }
.password-modal-desc { font-size: 0.85rem; color: var(--color-text-muted); margin: -4px 0 12px; }

/* ── Main + Grid (no-scroll adaptive) ──────────────────── */
.main {
  flex: 1;
  overflow: hidden;
  padding: var(--gap);
  min-height: 0;
}

.grid {
  width: 100%;
  height: 100%;
  display: grid;
  gap: var(--gap);
  overflow: hidden;
}

/* ── Site Card ─────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  transition: border-color 0.2s;
}
.card.card-down         { border-color: rgba(239,68,68,0.4); }
.card.card-up           { border-color: rgba(34,197,94,0.2); }
.card.card-maintenance  { border-color: rgba(129,140,248,0.35); }

/* screenshot */
.card-screenshot {
  position: relative;
  flex-shrink: 0;
  width: 100%;
  aspect-ratio: 16 / 8;
  background: var(--color-surface-2);
  overflow: hidden;
  cursor: zoom-in;
  min-height: 0;
}
.card-screenshot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s;
}
.card-screenshot:hover img { transform: scale(1.03); }
.screenshot-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  cursor: default;
}
.placeholder-icon { font-size: 1.4rem; opacity: 0.35; }

/* maintenance overlay */
.maintenance-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15,17,23,0.72);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-maintenance);
  backdrop-filter: blur(2px);
  pointer-events: none;
}
.maintenance-overlay .mo-icon { font-size: 1.6rem; }

/* status badge (on screenshot) */
.card-badge {
  position: absolute;
  top: 6px;
  left: 6px;
  padding: 2px 8px;
  border-radius: 100px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  z-index: 1;
  pointer-events: none;
}
.badge-up          { background: rgba(34,197,94,.22);   color: var(--color-up);          border: 1px solid rgba(34,197,94,.4); }
.badge-down        { background: rgba(239,68,68,.22);   color: var(--color-down);        border: 1px solid rgba(239,68,68,.4); }
.badge-pending     { background: rgba(245,158,11,.22);  color: var(--color-pending);     border: 1px solid rgba(245,158,11,.4); }
.badge-maintenance { background: rgba(129,140,248,.22); color: var(--color-maintenance); border: 1px solid rgba(129,140,248,.4); }

/* card body */
.card-body {
  flex: 1;
  padding: 8px 10px 4px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow: hidden;
  min-height: 0;
}
.card-title {
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}
.card-url {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* info row */
.card-info {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  font-size: 0.72rem;
  color: var(--color-text-muted);
}
.info-http { font-weight: 700; color: var(--color-text); }
.info-time { }
.info-dns  { color: #64748b; }
.info-size { color: #64748b; }
.info-redirect { color: var(--color-pending); font-size: 0.65rem; }

/* badges row */
.card-badges {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}
.badge-ssl-ok   { background: rgba(34,197,94,.15);   color: var(--color-up);   border: 1px solid rgba(34,197,94,.3);   border-radius: 4px; font-size: 0.65rem; font-weight: 600; padding: 1px 6px; }
.badge-ssl-warn { background: rgba(245,158,11,.15);  color: var(--color-pending); border: 1px solid rgba(245,158,11,.3); border-radius: 4px; font-size: 0.65rem; font-weight: 600; padding: 1px 6px; }
.badge-ssl-err  { background: rgba(239,68,68,.15);   color: var(--color-down); border: 1px solid rgba(239,68,68,.3);  border-radius: 4px; font-size: 0.65rem; font-weight: 600; padding: 1px 6px; }
.badge-uptime   { background: rgba(99,102,241,.12);  color: var(--color-primary-hover); border: 1px solid rgba(99,102,241,.25); border-radius: 4px; font-size: 0.65rem; font-weight: 600; padding: 1px 6px; }
.badge-tag      { background: var(--color-surface-2); color: var(--color-text-muted); border-radius: 4px; font-size: 0.62rem; padding: 1px 5px; }

/* error row */
.card-error {
  font-size: 0.7rem;
  color: var(--color-down);
  background: rgba(239,68,68,.08);
  border: 1px solid rgba(239,68,68,.2);
  border-radius: 4px;
  padding: 3px 6px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* sparkline row */
.card-sparkline {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--color-text-muted);
  flex-shrink: 0;
}
.card-sparkline .sparkline-label { font-size: 0.62rem; white-space: nowrap; }
.sparkline { display: block; color: var(--color-primary-hover); }

/* history dots */
.card-history {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: nowrap;
  overflow: hidden;
  flex-shrink: 0;
}
.dot {
  width: 5px;
  height: 12px;
  border-radius: 2px;
  flex-shrink: 0;
  opacity: 0.75;
  cursor: default;
  transition: opacity 0.15s;
}
.dot:hover { opacity: 1; }
.dot-up          { background: var(--color-up); }
.dot-down        { background: var(--color-down); opacity: 0.9; }
.dot-maintenance { background: var(--color-maintenance); }
.dot-pending     { background: var(--color-pending); }

/* checked time */
.card-checked {
  font-size: 0.65rem;
  color: var(--color-text-muted);
  margin-top: auto;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* card footer */
.card-footer {
  padding: 6px 8px;
  display: flex;
  gap: 4px;
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
}
.card-footer .btn {
  flex: 1;
  font-size: 0.72rem;
  padding: 4px 6px;
  min-width: 0;
}

/* ── Density: hide sections based on card height ──────── */
/* md: no screenshot */
.grid[data-density="md"] .card-screenshot,
.grid[data-density="sm"] .card-screenshot,
.grid[data-density="xs"] .card-screenshot { display: none !important; }

/* md: hide sparkline */
.grid[data-density="md"] .card-sparkline,
.grid[data-density="sm"] .card-sparkline,
.grid[data-density="xs"] .card-sparkline { display: none !important; }

/* sm: hide history + badges + info details */
.grid[data-density="sm"] .card-history,
.grid[data-density="xs"] .card-history,
.grid[data-density="sm"] .card-badges,
.grid[data-density="xs"] .card-badges,
.grid[data-density="sm"] .card-error,
.grid[data-density="xs"] .card-error,
.grid[data-density="sm"] .card-checked,
.grid[data-density="xs"] .card-checked { display: none !important; }

/* xs: hide everything except badge + title + footer */
.grid[data-density="xs"] .card-url,
.grid[data-density="xs"] .card-info { display: none !important; }

/* ── Empty State ──────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 2.2;
  gap: 4px;
}
.empty-state strong { color: var(--color-text); }
.empty-state-icon { font-size: 2.5rem; opacity: 0.25; margin-bottom: 8px; }

/* ── Buttons ──────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 7px 14px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
  transition: background 0.15s, opacity 0.15s, transform 0.1s;
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }

.btn-primary   { background: var(--color-primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--color-primary-hover); }

.btn-danger    { background: rgba(239,68,68,.12); color: var(--color-down); border: 1px solid rgba(239,68,68,.25); }
.btn-danger:hover:not(:disabled) { background: rgba(239,68,68,.22); }

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

.btn-check     { background: rgba(99,102,241,.12); color: var(--color-primary-hover); border: 1px solid rgba(99,102,241,.25); }
.btn-check:hover:not(:disabled) { background: rgba(99,102,241,.22); }

.btn-icon      { background: transparent; color: var(--color-text-muted); padding: 4px 6px; font-size: 0.8rem; }
.btn-icon:hover:not(:disabled) { color: var(--color-text); background: var(--color-surface-2); }

.btn-pause     { background: rgba(129,140,248,.12); color: var(--color-maintenance); border: 1px solid rgba(129,140,248,.25); }
.btn-pause:hover:not(:disabled) { background: rgba(129,140,248,.22); }

/* spinner */
@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  display: inline-block;
  width: 10px; height: 10px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* ── Modals ───────────────────────────────────────────── */
dialog {
  border: none;
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: 0 24px 80px rgba(0,0,0,0.7);
  padding: 0;
  max-width: 460px;
  width: calc(100vw - 32px);
}
dialog::backdrop {
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(4px);
}
.modal-wide { max-width: 720px; }
.modal-card { padding: 24px 24px 20px; }
.modal-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 16px; }

.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 20px;
}
@media (max-width: 580px) { .settings-grid { grid-template-columns: 1fr; } }

.form-group { display: flex; flex-direction: column; gap: 4px; margin-bottom: 12px; }
.form-group label { font-size: 0.72rem; font-weight: 600; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.form-group input,
.form-group textarea,
.form-group select,
.form-select {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text);
  padding: 8px 10px;
  font-size: 0.85rem;
  outline: none;
  transition: border-color 0.15s;
  font-family: inherit;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--color-primary); }
.form-group input.invalid { border-color: var(--color-down); }
.form-error { font-size: 0.72rem; color: var(--color-down); min-height: 1em; }
.form-check { flex-direction: row; align-items: center; gap: 8px; }
.form-check input { width: 14px; height: 14px; accent-color: var(--color-primary); }
.form-check label { font-size: 0.82rem; text-transform: none; letter-spacing: 0; }

.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 16px;
}

/* ── Lightbox ─────────────────────────────────────────── */
.lightbox {
  background: rgba(0,0,0,0.92);
  max-width: 95vw;
  max-height: 95vh;
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.lightbox-img {
  max-width: 100%;
  max-height: calc(95vh - 60px);
  border-radius: 6px;
}
.lightbox-close {
  position: absolute; top: 10px; right: 10px;
  background: rgba(255,255,255,.1);
  border: none; color: #fff;
  width: 28px; height: 28px;
  border-radius: 50%; cursor: pointer; font-size: 0.85rem;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.15s;
}
.lightbox-close:hover { background: rgba(255,255,255,.25); }

/* ── Toast notifications ──────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 9999;
  pointer-events: none;
}
.toast {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 7px;
  padding: 10px 14px;
  font-size: 0.82rem;
  box-shadow: var(--shadow);
  pointer-events: all;
  animation: slideIn 0.2s ease;
  max-width: 320px;
}
@keyframes slideIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
.toast.toast-success { border-left: 3px solid var(--color-up); }
.toast.toast-error   { border-left: 3px solid var(--color-down); }
.toast.toast-info    { border-left: 3px solid var(--color-primary); }
.toast.toast-warn    { border-left: 3px solid var(--color-pending); }

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