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

:root {
  --bg: #0f0f13;
  --surface: #1a1a24;
  --surface-hover: #222230;
  --border: #2a2a3a;
  --text: #e0e0e8;
  --text-muted: #8888a0;
  --accent: #6c5ce7;
  --accent-glow: rgba(108, 92, 231, 0.2);
  --green: #00d68f;
  --red: #ff6b6b;
  --orange: #ffa726;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(0,0,0,0.3);
}

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

/* --- Header --- */
header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.logo { display: flex; align-items: center; gap: 10px; }
.logo h1 { font-size: 1.4rem; font-weight: 700; }
.logo-icon { font-size: 1.6rem; }
.badge {
  background: var(--accent);
  color: white;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 99px;
  font-weight: 600;
  opacity: 0.85;
}

.header-stats { display: flex; gap: 16px; font-size: 0.85rem; color: var(--text-muted); }
.header-stats strong { color: var(--text); font-weight: 600; }

/* --- Main --- */
main {
  flex: 1;
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  padding: 24px 16px;
}

/* --- Add Form --- */
.add-form {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.add-form input {
  flex: 1;
  min-width: 180px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-size: 0.9rem;
  outline: none;
  transition: border 0.2s;
}
.add-form input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.add-form input::placeholder { color: var(--text-muted); }

button {
  padding: 10px 18px;
  border: none;
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
button:active { transform: scale(0.96); }
#addBtn { background: var(--accent); color: white; }
#addBtn:hover { filter: brightness(1.15); }
#checkAllBtn { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
#checkAllBtn:hover { background: var(--surface-hover); }

/* --- Status Banner --- */
.status-banner {
  padding: 10px 16px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 0.9rem;
  font-weight: 500;
}
.status-banner.info { background: rgba(108, 92, 231, 0.15); color: #a29bfe; border: 1px solid rgba(108, 92, 231, 0.3); }
.status-banner.error { background: rgba(255, 107, 107, 0.15); color: var(--red); border: 1px solid rgba(255, 107, 107, 0.3); }
.status-banner.success { background: rgba(0, 214, 143, 0.15); color: var(--green); border: 1px solid rgba(0, 214, 143, 0.3); }
.hidden { display: none; }

/* --- Dashboard / Cards --- */
.dashboard { 
  display: flex; 
  flex-direction: column; 
  gap: 10px; 
}

.endpoint-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.2s;
}
.endpoint-card:hover { background: var(--surface-hover); }

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.status-dot.up { background: var(--green); box-shadow: 0 0 8px rgba(0, 214, 143, 0.4); }
.status-dot.down { background: var(--red); box-shadow: 0 0 8px rgba(255, 107, 107, 0.4); }
.status-dot.unknown { background: var(--text-muted); }

.endpoint-info { flex: 1; min-width: 0; }
.endpoint-url { font-weight: 600; font-size: 0.95rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.endpoint-meta { display: flex; gap: 12px; font-size: 0.75rem; color: var(--text-muted); margin-top: 3px; flex-wrap: wrap; }
.endpoint-meta span { display: flex; align-items: center; gap: 3px; }

.uptime-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 99px;
}
.uptime-badge.high { background: rgba(0, 214, 143, 0.15); color: var(--green); }
.uptime-badge.medium { background: rgba(255, 167, 38, 0.15); color: var(--orange); }
.uptime-badge.low { background: rgba(255, 107, 107, 0.15); color: var(--red); }

.card-actions { display: flex; gap: 6px; }
.card-actions button {
  padding: 6px 12px;
  font-size: 0.75rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.card-actions button:hover { background: var(--surface-hover); color: var(--text); }
.card-actions .delete-btn:hover { border-color: var(--red); color: var(--red); background: rgba(255, 107, 107, 0.1); }
.card-actions .check-btn:hover { border-color: var(--accent); color: var(--accent); background: rgba(108, 92, 231, 0.1); }

/* --- Empty State --- */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.empty-icon { font-size: 3rem; margin-bottom: 12px; opacity: 0.5; }
.empty-state h2 { font-size: 1.2rem; color: var(--text); margin-bottom: 6px; }

/* --- Footer --- */
footer {
  text-align: center;
  padding: 16px;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

/* --- Responsive --- */
@media (max-width: 600px) {
  header { flex-direction: column; align-items: flex-start; }
  .header-stats { width: 100%; justify-content: space-around; }
  .endpoint-card { flex-wrap: wrap; }
  .card-actions { width: 100%; justify-content: flex-end; margin-top: 6px; }
}