:root {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d27;
  --bg-card: #222536;
  --bg-hover: #2a2e42;
  --text-primary: #e4e6f0;
  --text-secondary: #9398b0;
  --accent: #7c6aef;
  --green: #34d399;
  --red: #f87171;
  --yellow: #fbbf24;
  --blue: #60a5fa;
  --radius: 10px;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

/* ─── Header ─────────────────────────────────────── */
header {
  background: var(--bg-secondary);
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.header-left { display: flex; align-items: baseline; gap: 12px; }
.header-left h1 { font-size: 1.4rem; font-weight: 700; }
.subtitle { color: var(--text-secondary); font-size: 0.85rem; }
.header-right { display: flex; align-items: center; gap: 16px; }
.last-check { color: var(--text-secondary); font-size: 0.85rem; font-family: 'SF Mono', Monaco, monospace; }

.btn-refresh {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 6px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  transition: opacity 0.2s;
}
.btn-refresh:hover { opacity: 0.85; }
.btn-refresh:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-logout {
  background: var(--red);
  color: #fff;
  border: none;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
  transition: opacity 0.2s;
}
.btn-logout:hover { opacity: 0.85; }

.btn-tg-toggle {
  background: var(--bg-hover);
  color: var(--text-secondary);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
  transition: all 0.2s;
}
.btn-tg-toggle.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-tg-toggle:hover { opacity: 0.85; }

/* ─── Login Overlay ──────────────────────────────── */
.login-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
}
.login-overlay.hidden { display: none; }

.login-box {
  background: var(--bg-secondary);
  border-radius: var(--radius);
  padding: 32px 36px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 320px;
}
.login-box h2 { font-size: 1.2rem; text-align: center; margin-bottom: 4px; }

.login-box input {
  background: var(--bg-primary);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}
.login-box input:focus { border-color: var(--accent); }

.btn-login {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 10px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  transition: opacity 0.2s;
}
.btn-login:hover { opacity: 0.85; }

.login-error {
  color: var(--red);
  font-size: 0.82rem;
  text-align: center;
  min-height: 1.2em;
}

/* ─── Main ───────────────────────────────────────── */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ─── Overview Bar ───────────────────────────────── */
.overview-bar {
  background: var(--bg-secondary);
  border-radius: var(--radius);
  padding: 14px 20px;
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  box-shadow: var(--shadow);
}
.overview-item { display: flex; flex-direction: column; gap: 2px; }
.overview-label { font-size: 0.75rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; }
.overview-value { font-size: 1rem; font-weight: 600; }
.overview-value.mono { font-family: 'SF Mono', Monaco, monospace; font-size: 0.9rem; }

/* ─── Sections ───────────────────────────────────── */
.section {
  background: var(--bg-secondary);
  border-radius: var(--radius);
  padding: 16px 20px;
  box-shadow: var(--shadow);
}
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}
.section-header h2 { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 1px; color: var(--text-secondary); }
.section-count { font-size: 0.8rem; color: var(--text-secondary); }

.section-header.clickable { cursor: pointer; user-select: none; }
.section-header.clickable:hover h2 { color: var(--text-primary); }
.toggle-arrow { font-size: 0.7rem; color: var(--text-secondary); transition: transform 0.2s; }
.toggle-arrow.open { transform: rotate(90deg); }

/* ─── Website Grid ───────────────────────────────── */
.websites-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
}

.website-card {
  background: var(--bg-card);
  border-radius: 8px;
  padding: 12px 14px;
  border-left: 3px solid var(--green);
  transition: background 0.2s;
}
.website-card:hover { background: var(--bg-hover); }
.website-card.down { border-left-color: var(--red); }
.website-card.pending { border-left-color: var(--text-secondary); }

.website-name {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  flex-shrink: 0;
}
.status-dot.down { background: var(--red); }
.status-dot.pending { background: var(--text-secondary); }
.status-dot.up { animation: pulse 2s ease-in-out infinite; }

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.4); }
  50% { box-shadow: 0 0 0 4px rgba(52, 211, 153, 0); }
}

.website-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.response-time {
  font-family: 'SF Mono', Monaco, monospace;
  font-variant-numeric: tabular-nums;
}
.response-time.fast { color: var(--green); }
.response-time.medium { color: var(--yellow); }
.response-time.slow { color: var(--red); }

.status-code { font-family: 'SF Mono', Monaco, monospace; }
.status-code.ok { color: var(--green); }
.status-code.error { color: var(--red); }

.website-delete {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.75rem;
  padding: 2px 4px;
  opacity: 0;
  transition: opacity 0.2s, color 0.2s;
}
.website-card:hover .website-delete { opacity: 1; }
.website-delete:hover { color: var(--red); }

/* ─── Server Grid ────────────────────────────────── */
.servers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 10px;
}

.server-card {
  background: var(--bg-card);
  border-radius: 8px;
  padding: 14px 16px;
  border-left: 3px solid var(--green);
}
.server-card:hover { background: var(--bg-hover); }
.server-card.down { border-left-color: var(--red); }
.server-card.pending { border-left-color: var(--text-secondary); }

.server-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.server-name {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
}

.server-host {
  font-family: 'SF Mono', Monaco, monospace;
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.server-ping {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.server-ping .latency { font-family: 'SF Mono', Monaco, monospace; }

.port-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.port-badge {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(52, 211, 153, 0.12);
  color: var(--green);
}
.port-badge.closed {
  background: rgba(248, 113, 113, 0.12);
  color: var(--red);
}

.port-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
}
.port-badge.closed .port-dot { background: var(--red); }

.server-delete {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.75rem;
  padding: 2px 4px;
  opacity: 0;
  transition: opacity 0.2s, color 0.2s;
}
.server-card:hover .server-delete { opacity: 1; }
.server-delete:hover { color: var(--red); }

/* ─── Home Network ───────────────────────────────── */
.home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
}

.home-card {
  background: var(--bg-card);
  border-radius: 8px;
  padding: 14px 16px;
}

.home-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.home-value {
  font-size: 1.1rem;
  font-weight: 600;
  font-family: 'SF Mono', Monaco, monospace;
}

.ip-changed {
  color: var(--yellow);
  font-size: 0.75rem;
  margin-top: 4px;
}

/* ─── History / Incident Log ─────────────────────── */
.history-content { margin-top: 10px; }
.hidden { display: none; }

.history-list {
  max-height: 400px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.history-entry {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 6px;
  background: var(--bg-card);
  font-size: 0.82rem;
}

.history-time {
  font-family: 'SF Mono', Monaco, monospace;
  font-size: 0.75rem;
  color: var(--text-secondary);
  flex-shrink: 0;
  min-width: 60px;
}

.history-icon { flex-shrink: 0; font-size: 0.8rem; }
.history-icon.up { color: var(--green); }
.history-icon.down { color: var(--red); }
.history-icon.warning { color: var(--yellow); }
.history-icon.info { color: var(--blue); }

.history-target { font-weight: 600; flex-shrink: 0; }
.history-message { color: var(--text-secondary); }

.history-empty {
  color: var(--text-secondary);
  font-size: 0.85rem;
  padding: 12px;
  text-align: center;
}

/* ─── Config Panel ───────────────────────────────── */
.config-content { margin-top: 10px; }

.config-forms {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.config-form {
  background: var(--bg-card);
  border-radius: 8px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.config-form h3 {
  font-size: 0.82rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.config-form input {
  background: var(--bg-primary);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  padding: 8px 10px;
  color: var(--text-primary);
  font-size: 0.85rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}
.config-form input:focus { border-color: var(--accent); }
.config-form input::placeholder { color: var(--text-secondary); opacity: 0.6; }

.btn-add {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 8px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
  align-self: flex-start;
  transition: opacity 0.2s;
}
.btn-add:hover { opacity: 0.85; }

.btn-small {
  background: var(--bg-hover);
  color: var(--text-primary);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.78rem;
  transition: background 0.2s;
}
.btn-small:hover { background: var(--accent); }

/* ─── Telegram Panel ─────────────────────────────── */
.tg-row { display: flex; flex-direction: column; gap: 4px; }
.tg-row label { font-size: 0.78rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; }

.tg-chat-row { display: flex; gap: 8px; }
.tg-chat-row input { flex: 1; }

.tg-chat-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.tg-chat-item {
  background: var(--bg-hover);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.78rem;
  cursor: pointer;
  transition: border-color 0.2s;
}
.tg-chat-item:hover { border-color: var(--accent); }

.tg-toggle-row { display: flex; align-items: center; gap: 8px; }
.tg-toggle-row input[type="checkbox"] {
  width: 18px; height: 18px; accent-color: var(--accent); cursor: pointer;
}

.tg-buttons { display: flex; gap: 8px; margin-top: 4px; flex-wrap: wrap; }
.tg-time-row { display: flex; gap: 12px; margin-top: 6px; }
.tg-time-row .tg-row { flex: 1; }
.tg-time-row input[type="time"] { width: 100%; }

.tg-hint { font-size: 0.78rem; color: var(--text-secondary); margin-bottom: 8px; }

.tg-rules { display: flex; flex-direction: column; gap: 6px; }
.tg-rule {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px;
  background: var(--bg-primary);
  border-radius: 6px;
}
.tg-rule input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; }
.tg-rule-label { font-size: 0.85rem; flex: 1; }
.tg-rule-type { font-family: 'SF Mono', Monaco, monospace; font-size: 0.72rem; color: var(--text-secondary); }

.tg-help {
  background: var(--bg-card);
  border-radius: 8px;
  padding: 14px;
  margin-top: 12px;
}
.tg-help h3 { font-size: 0.82rem; color: var(--text-secondary); text-transform: uppercase; margin-bottom: 8px; }
.tg-help ol { padding-left: 20px; font-size: 0.82rem; color: var(--text-secondary); line-height: 1.8; }
.tg-help code { background: var(--bg-primary); padding: 2px 6px; border-radius: 4px; font-size: 0.8rem; }

/* ─── Telegram Chat ─────────────────────────────── */
.chat-send-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}
.chat-input {
  flex: 1;
  background: var(--bg-primary);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}
.chat-input:focus { border-color: var(--accent); }
.chat-input::placeholder { color: var(--text-secondary); opacity: 0.6; }

.chat-log {
  max-height: 350px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.chat-entry {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 6px;
  background: var(--bg-card);
  font-size: 0.85rem;
}
.chat-entry.outgoing { border-left: 3px solid var(--accent); }
.chat-entry.incoming { border-left: 3px solid var(--blue); }

.chat-time {
  font-family: 'SF Mono', Monaco, monospace;
  font-size: 0.72rem;
  color: var(--text-secondary);
  flex-shrink: 0;
  min-width: 45px;
  padding-top: 2px;
}
.chat-from {
  font-weight: 600;
  flex-shrink: 0;
  min-width: 60px;
}
.chat-from.bot { color: var(--accent); }
.chat-from.user { color: var(--blue); }
.chat-text { color: var(--text-secondary); flex: 1; word-break: break-word; }

/* ─── Footer ─────────────────────────────────────── */
footer {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 20px 24px;
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* ─── Responsive ─────────────────────────────────── */
@media (max-width: 600px) {
  header { flex-direction: column; gap: 10px; align-items: flex-start; }
  .overview-bar { gap: 16px; }
  .websites-grid { grid-template-columns: 1fr; }
  .servers-grid { grid-template-columns: 1fr; }
  main { padding: 12px; }
}

/* ─── Scrollbar ──────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.25); }