:root {
  --bg: #f2f4f8;
  --surface: #ffffff;
  --surface-alt: #f8f9fb;
  --text: #1a1f2b;
  --muted: #667085;
  --border: #e3e6ec;
  --primary: #3a5bfd;
  --primary-hover: #2c46d6;
  --primary-contrast: #ffffff;
  --danger: #e0432f;
  --danger-hover: #c7351f;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(20, 24, 38, 0.04), 0 6px 20px rgba(20, 24, 38, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161f;
    --surface: #1c1f2b;
    --surface-alt: #22263344;
    --text: #eceef3;
    --muted: #9aa1b2;
    --border: #2c3040;
    --primary: #6d84ff;
    --primary-hover: #8b9dff;
    --primary-contrast: #10121a;
    --danger: #ff6b57;
    --danger-hover: #ff8a79;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.2), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); }

/* ---------- Top bar ---------- */

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
}

.brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  text-decoration: none;
}

.nav-toggle { display: none; }

.nav-burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  cursor: pointer;
}

.nav-burger span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

.topbar nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 20px 16px;
}

.topbar nav a,
.topbar nav .who {
  padding: 8px 4px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
}

.topbar nav .who {
  color: var(--muted);
  font-weight: 600;
}

.nav-toggle ~ nav { display: none; }
.nav-toggle:checked ~ nav { display: flex; }

.lang-switch {
  display: flex;
  gap: 4px;
  padding-top: 10px;
  margin-top: 6px;
  border-top: 1px solid var(--border);
}

.lang-switch a {
  padding: 4px 8px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
  text-decoration: none;
  border-radius: 6px;
  letter-spacing: 0.02em;
}

.lang-switch a.lang-active {
  color: var(--primary);
  background: var(--surface-alt);
}

.search-form {
  width: 100%;
  display: flex;
  gap: 6px;
  align-items: center;
}

.search-form input {
  margin-top: 0;
  padding: 8px 12px;
  font-size: 0.9rem;
  flex: 1;
}

.filters-link {
  flex: 0 0 auto;
  text-decoration: none;
  font-size: 1rem;
  padding: 4px 6px;
  border-radius: var(--radius-sm);
}

.filters-link:hover { background: var(--surface-alt); }

.nav-bell {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.badge-count {
  background: var(--danger);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 999px;
  line-height: 1.4;
}

.notification { position: relative; }

.notification-unread {
  border-left: 3px solid var(--primary);
}

@media (min-width: 720px) {
  .nav-burger { display: none; }
  .topbar-row { padding: 14px 24px; }
  .topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-right: 24px;
  }
  .topbar-row { flex: 0 0 auto; }
  .topbar nav {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    padding: 8px 0;
    gap: 14px;
  }
  .nav-toggle ~ nav { display: flex; }
  .lang-switch {
    padding-top: 0;
    margin-top: 0;
    border-top: none;
    margin-left: 4px;
  }
  .search-form { width: 160px; }
}

/* ---------- Layout ---------- */

.container {
  max-width: 720px;
  margin: 24px auto;
  padding: 0 16px 48px;
}

h1 { margin-top: 0; font-size: 1.5rem; }
h2 { font-size: 1.15rem; }

.card, .subcard {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}

.subcard { background: var(--surface-alt); box-shadow: none; }

/* ---------- Forms ---------- */

label { display: block; margin-bottom: 14px; font-weight: 600; font-size: 0.9rem; }

input, textarea, select {
  width: 100%;
  padding: 10px 12px;
  margin-top: 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  background: var(--surface);
  color: var(--text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input[type="file"] { padding: 8px; }

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 20%, transparent);
}

button {
  background: var(--primary);
  color: var(--primary-contrast);
  border: none;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  transition: background 0.15s ease, transform 0.05s ease;
}

button:hover { background: var(--primary-hover); }
button:active { transform: scale(0.98); }

.btn-secondary {
  background: var(--surface-alt);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover { background: var(--border); }

.form-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.linklike {
  background: none;
  color: var(--primary);
  padding: 0;
  text-decoration: underline;
  font-size: 0.85rem;
  font-weight: 500;
}

.linklike:hover { background: none; color: var(--primary-hover); }

.linklike.danger { color: var(--danger); }
.linklike.danger:hover { color: var(--danger-hover); }

.linklike.liked { color: var(--danger); text-decoration: none; }

.inline-form { display: inline; }

.post-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.error {
  color: var(--danger);
  font-weight: 600;
  background: color-mix(in srgb, var(--danger) 10%, transparent);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
}

/* ---------- Posts / feed ---------- */

.meta { color: var(--muted); font-size: 0.85rem; }

.badge {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
  white-space: nowrap;
}

a.badge { text-decoration: none; color: var(--muted); }
a.badge:hover { color: var(--primary); border-color: var(--primary); }
.badge a { color: var(--primary); text-decoration: underline; }

.content { white-space: pre-wrap; }

.post-media {
  display: block;
  max-width: 100%;
  border-radius: var(--radius-sm);
  margin-top: 12px;
}

audio.post-media { width: 100%; }

.row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  gap: 10px;
}

.row:last-child { border-bottom: none; }

.comment {
  background: var(--surface-alt);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-bottom: 10px;
  border: 1px solid var(--border);
}

.hint { color: var(--muted); font-size: 0.85rem; }

ul { padding-left: 18px; }

.tag-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }

.quick-post-form textarea { resize: vertical; }

.quick-post-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.quick-post-actions select { width: auto; margin-top: 0; }

.filter-bar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.filter-bar label { margin-bottom: 0; }

.filter-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 4px;
}

@media (min-width: 640px) {
  .filter-bar {
    grid-template-columns: repeat(2, 1fr);
    align-items: end;
  }
  .advanced-filters,
  .filter-actions { grid-column: 1 / -1; }
}

.advanced-filters {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  background: var(--surface-alt);
}

.advanced-filters summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--muted);
}

.advanced-filters[open] summary { margin-bottom: 12px; }

.advanced-filters-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.advanced-filters-body label { margin-bottom: 0; }

@media (min-width: 640px) {
  .advanced-filters-body { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Admin table ---------- */

.admin-table {
  width: 100%;
  border-collapse: collapse;
  display: block;
  overflow-x: auto;
  white-space: nowrap;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 20px;
}

.admin-table th, .admin-table td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.admin-table tr:last-child td { border-bottom: none; }
.admin-table th { color: var(--muted); font-weight: 600; }

/* ---------- Plans ---------- */

.checkbox-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 0;
  font-weight: 500;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.85rem;
}

.checkbox-item input { width: auto; margin-top: 0; }

.plan-tabs { margin-top: 4px; }

.tab-input { position: absolute; opacity: 0; pointer-events: none; }

.tab-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.tab-labels label {
  margin-bottom: 0;
  cursor: pointer;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
}

.tab-panel { display: none; }

#tab-itinerary:checked ~ .tab-panels #panel-itinerary,
#tab-transport:checked ~ .tab-panels #panel-transport,
#tab-sights:checked ~ .tab-panels #panel-sights,
#tab-todos:checked ~ .tab-panels #panel-todos,
#tab-expenses:checked ~ .tab-panels #panel-expenses,
#tab-map:checked ~ .tab-panels #panel-map {
  display: block;
}

#tab-itinerary:checked ~ .tab-labels label[for="tab-itinerary"],
#tab-transport:checked ~ .tab-labels label[for="tab-transport"],
#tab-sights:checked ~ .tab-labels label[for="tab-sights"],
#tab-todos:checked ~ .tab-labels label[for="tab-todos"],
#tab-expenses:checked ~ .tab-labels label[for="tab-expenses"],
#tab-map:checked ~ .tab-labels label[for="tab-map"] {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--primary-contrast);
}

.plan-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: 10px;
}

.plan-item-main {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.todo-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.todo-toggle {
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--text);
}

.todo-toggle.done {
  color: var(--muted);
  text-decoration: line-through;
}

.balance-list { margin-bottom: 14px; }

.balance-positive { color: #1a8a4a; font-weight: 700; }
.balance-negative { color: var(--danger); font-weight: 700; }

@media (prefers-color-scheme: dark) {
  .balance-positive { color: #4ade80; }
}

.plan-map {
  height: 380px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}