:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --ink: #122030;
  --ink-soft: #4a5a68;
  --accent: #0f8b8d;
  --accent-2: #f4a261;
  --danger: #b00020;
  --border: #d7e0e6;
}

body[data-theme="dark"] {
  --bg: #0f1a24;
  --surface: #132433;
  --ink: #e7eff6;
  --ink-soft: #b8c5cf;
  --accent: #5eead4;
  --accent-2: #f6bd60;
  --danger: #ff6b6b;
  --border: #274055;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top right, #d9eef3 0%, var(--bg) 45%), var(--bg);
}
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
.brand { font-weight: 700; }
.nav { display: flex; gap: 0.7rem; flex-wrap: wrap; }
.nav a {
  text-decoration: none;
  color: var(--ink);
  padding: 0.4rem 0.6rem;
  border-radius: 0.5rem;
}
.nav a:hover { background: var(--border); }
.container {
  max-width: 1024px;
  margin: 0 auto;
  padding: 1rem;
  display: grid;
  gap: 1rem;
  animation: fadeIn 260ms ease-out;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
}
.form, .grid { display: grid; gap: 0.75rem; }
label { display: grid; gap: 0.4rem; color: var(--ink-soft); }
input, textarea, select, button {
  font: inherit;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.62rem 0.7rem;
  background: var(--surface);
  color: var(--ink);
}
button, .button {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: white;
  border: none;
  text-decoration: none;
  display: inline-block;
  cursor: pointer;
}
button:hover, .button:hover { filter: brightness(1.06); }
.error { color: var(--danger); }
.success { color: #1f7a1f; font-weight: 600; }
.footer {
  margin-top: 1rem;
  padding: 1rem;
  text-align: center;
  color: var(--ink-soft);
}
.chat-window {
  display: grid;
  gap: 0.5rem;
  max-height: 250px;
  overflow: auto;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 10px;
}
.muted { color: var(--ink-soft); font-size: 0.9rem; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { border-bottom: 1px solid var(--border); padding: 0.5rem; text-align: left; }
.log-box {
  white-space: pre-wrap;
  max-height: 460px;
  overflow: auto;
  background: color-mix(in srgb, var(--surface) 85%, #000 15%);
  color: var(--ink);
  padding: 1rem;
  border-radius: 10px;
}
.actions { display: flex; gap: 1rem; justify-content: center; }
.inline-form { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.chips { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.chip { border: 1px solid var(--border); border-radius: 999px; padding: 0.25rem 0.7rem; }
.chip-soft { background: color-mix(in srgb, var(--surface) 75%, var(--accent) 8%); }
.results-grid { display: grid; gap: 0.85rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.result-card { border: 1px solid var(--border); border-radius: 12px; padding: 0.8rem; display: grid; gap: 0.45rem; }
.avatar { width: 72px; height: 72px; border-radius: 50%; object-fit: cover; border: 1px solid var(--border); }
.avatar.small { width: 44px; height: 44px; }
.profile-avatar { width: 120px; height: 120px; }
.profile-hero { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }
.profile-summary { display: grid; gap: 0.5rem; }
.profile-card-grid { align-items: start; }
.profile-card-large { align-content: start; }
.custom-interest-list { display: grid; gap: 0.6rem; }
.custom-interest-form { justify-content: flex-start; }
.two-col { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.photo-grid { display: grid; gap: 0.8rem; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.photo-card { border: 1px solid var(--border); border-radius: 10px; padding: 0.6rem; display: grid; gap: 0.5rem; }
.photo-card img { width: 100%; height: 120px; object-fit: cover; border-radius: 8px; }
.badge { display: inline-block; background: #e7f6f6; color: #0c6364; border-radius: 999px; padding: 0.2rem 0.55rem; margin-right: 0.3rem; font-size: 0.8rem; }
.badge.online { background: #e6f7ea; color: #1f7a1f; }
.match-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.75rem; }
.match-item { display: flex; gap: 0.7rem; align-items: center; justify-content: space-between; border: 1px solid var(--border); border-radius: 10px; padding: 0.6rem; }
.secondary { background: transparent; color: var(--ink); border: 1px solid var(--border); }

@media (max-width: 768px) {
  .container { padding: 0.75rem; }
  .topbar { padding: 0.75rem; }
  .nav { gap: 0.35rem; }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}