:root {
  --green:  #2D4A2B;
  --gold:   #C9A227;
  --brown:  #6B4423;
  --navy:   #182718;
  --light:  #f8f5ee;
  --white:  #FFFFFF;
  --danger: #C0392B;
  --shadow: 0 2px 12px rgba(0,0,0,0.15);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', system-ui, sans-serif; background: var(--light); color: #222; min-height: 100vh; }

/* NAV */
nav.tc-nav {
  background: var(--navy); color: var(--white);
  display: flex; align-items: center; padding: 0 24px;
  height: 56px; position: sticky; top: 0; z-index: 1000;
  box-shadow: var(--shadow); gap: 8px;
}
nav.tc-nav .brand {
  font-size: 1.2rem; font-weight: 700; color: var(--gold);
  text-decoration: none; letter-spacing: .5px; margin-right: 16px; white-space: nowrap;
}
nav.tc-nav a {
  color: #d4d8c8; text-decoration: none; padding: 6px 12px;
  border-radius: 6px; font-size: .9rem; transition: background .15s, color .15s;
}
nav.tc-nav a:hover, nav.tc-nav a.active { background: rgba(201,162,39,.18); color: var(--gold); }
nav.tc-nav .spacer { flex: 1; }
nav.tc-nav .logout-btn {
  background: rgba(192,57,43,.8); color: #fff; border: none;
  padding: 6px 14px; border-radius: 6px; cursor: pointer; font-size: .875rem;
}
nav.tc-nav .logout-btn:hover { background: var(--danger); }

/* MAIN */
main.tc-main { padding: 28px 32px; max-width: 1280px; margin: 0 auto; }

/* CARDS */
.card { background: var(--white); border-radius: 10px; box-shadow: var(--shadow); padding: 24px; margin-bottom: 20px; }
.card h2 { color: var(--green); font-size: 1.2rem; margin-bottom: 14px; }

/* BUTTONS */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 18px; border-radius: 7px; border: none; cursor: pointer;
  font-size: .9rem; font-weight: 600; transition: opacity .15s, transform .1s;
  text-decoration: none;
}
.btn:hover { opacity: .88; transform: translateY(-1px); }
.btn-primary  { background: var(--green); color: var(--white); }
.btn-gold     { background: var(--gold);  color: var(--navy);  }
.btn-brown    { background: var(--brown); color: var(--white); }
.btn-danger   { background: var(--danger);color: var(--white); }
.btn-outline  { background: transparent; color: var(--green); border: 2px solid var(--green); }
.btn-sm       { padding: 5px 11px; font-size: .8rem; }

/* FORMS */
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: .85rem; font-weight: 600; color: var(--navy); margin-bottom: 5px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 9px 12px; border: 2px solid #ddd;
  border-radius: 7px; font-size: .95rem; transition: border-color .2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--green);
}

/* BADGES */
.badge { display: inline-block; padding: 2px 9px; border-radius: 99px; font-size: .75rem; font-weight: 700; }
.badge-green { background: #d4edda; color: #155724; }
.badge-gold  { background: #fff3cd; color: #856404; }
.badge-blue  { background: #cce5ff; color: #004085; }
.badge-red   { background: #f8d7da; color: #721c24; }
.badge-gray  { background: #e2e3e5; color: #383d41; }

/* TABLE */
.tc-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.tc-table th { background: var(--navy); color: var(--white); padding: 10px 14px; text-align: left; }
.tc-table td { padding: 9px 14px; border-bottom: 1px solid #e8e8e8; vertical-align: middle; }
.tc-table tr:hover td { background: #f8f6f0; }

/* ALERTS */
.alert { padding: 11px 16px; border-radius: 7px; margin-bottom: 14px; font-size: .9rem; }
.alert-error   { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
.alert-success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.alert-info    { background: #cce5ff; color: #004085; border: 1px solid #b8daff; }

/* SPINNER */
.spinner {
  display: inline-block; width: 22px; height: 22px;
  border: 3px solid #ddd; border-top-color: var(--green);
  border-radius: 50%; animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* MODAL */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,.55);
  display: flex; align-items: center; justify-content: center; z-index: 9000;
}
.modal-backdrop.hidden { display: none; }
.modal-box {
  background: var(--white); border-radius: 12px; padding: 28px;
  max-width: 560px; width: 90%; box-shadow: 0 8px 40px rgba(0,0,0,.3); position: relative;
}
.modal-box h3 { color: var(--green); margin-bottom: 16px; font-size: 1.1rem; }
.modal-close { position: absolute; top: 14px; right: 16px; background: none; border: none; font-size: 1.4rem; cursor: pointer; color: #888; }

/* GALLERY */
.finds-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.find-card { background: var(--white); border-radius: 10px; overflow: hidden; box-shadow: var(--shadow); cursor: pointer; transition: transform .15s; }
.find-card:hover { transform: translateY(-3px); }
.find-card img { width: 100%; height: 180px; object-fit: cover; display: block; }
.find-card .find-info { padding: 12px; }
.find-card .find-info h4 { font-size: .95rem; color: var(--green); margin-bottom: 4px; }
.find-card .find-info .meta { font-size: .78rem; color: #666; }
.find-card .no-photo {
  width: 100%; height: 180px;
  background: linear-gradient(135deg, var(--green) 0%, var(--navy) 100%);
  display: flex; align-items: center; justify-content: center; font-size: 2.5rem;
}

/* MAP full-screen */
#map-container { position: fixed; top: 56px; left: 0; right: 0; bottom: 0; }
#map { width: 100%; height: 100%; }

/* STATS */
.stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 14px; margin-bottom: 22px; }
.stat-box { background: var(--white); border-radius: 10px; padding: 18px; text-align: center; box-shadow: var(--shadow); }
.stat-box .stat-val { font-size: 2rem; font-weight: 700; color: var(--green); }
.stat-box .stat-lbl { font-size: .78rem; color: #666; margin-top: 4px; }

/* TRACK PREVIEW */
.track-card { background: #fff; border-radius: 10px; box-shadow: 0 2px 12px rgba(0,0,0,.12); margin-bottom: 20px; overflow: hidden; }
.track-preview-map { height: 200px; }

/* RESPONSIVE */
@media (max-width: 768px) {
  main.tc-main { padding: 16px; }
  .finds-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) { .finds-grid { grid-template-columns: 1fr; } }