:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --primary-soft: #eef2ff;
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #1e293b;
  --text-soft: #64748b;
  --border: #e2e8f0;
  --danger: #dc2626;
  --danger-soft: #fee2e2;
  --ok: #16a34a;
  --shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 1px 2px rgba(15, 23, 42, .04);
  --shadow-lg: 0 10px 25px rgba(15, 23, 42, .12);
  --radius: 14px;
  --safebottom: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

.hidden { display: none !important; }

.offline-banner {
  position: sticky;
  top: 0;
  z-index: 60;
  background: #f59e0b;
  color: #fff;
  text-align: center;
  font-size: 13px;
  padding: 6px 10px;
}

.appbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 14px;
  padding-top: calc(10px + env(safe-area-inset-top, 0px));
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  border: 0;
  background: none;
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  padding: 0;
}

.brand-icon { width: 30px; height: 30px; border-radius: 8px; }

.appbar-actions { display: flex; gap: 6px; }

.icon-btn {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 10px;
  width: 38px;
  height: 38px;
  font-size: 18px;
  cursor: pointer;
  color: var(--text);
}

#view {
  max-width: 980px;
  margin: 0 auto;
  padding: 16px 14px calc(96px + var(--safebottom));
}

.fab {
  position: fixed;
  right: 18px;
  bottom: calc(22px + var(--safebottom));
  width: 58px;
  height: 58px;
  border-radius: 50%;
  border: 0;
  background: var(--primary);
  color: #fff;
  font-size: 30px;
  font-weight: 400;
  line-height: 1;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  z-index: 40;
  transition: transform .15s ease;
}
.fab:active { transform: scale(.92); }

/* ---------- Auth ---------- */
.auth-wrap {
  min-height: calc(100vh - 120px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 0;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px 24px;
  box-shadow: var(--shadow);
  text-align: center;
}

.auth-logo { width: 68px; height: 68px; border-radius: 18px; margin-bottom: 10px; }
.auth-title { margin: 0 0 4px; font-size: 24px; }
.auth-sub { margin: 0 0 22px; color: var(--text-soft); font-size: 14px; }

.tabs {
  display: flex;
  background: var(--bg);
  border-radius: 12px;
  padding: 4px;
  margin-bottom: 20px;
}

.tab {
  flex: 1;
  padding: 9px;
  border: 0;
  border-radius: 9px;
  background: none;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-soft);
  cursor: pointer;
}
.tab.active { background: var(--card); color: var(--primary); box-shadow: var(--shadow); }

/* ---------- Forms ---------- */
.field { margin-bottom: 14px; text-align: left; }

.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text-soft); }

.input, textarea.input, select.input {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 15px;
  background: #fff;
  color: var(--text);
  font-family: inherit;
  outline: none;
}
.input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: 0;
  border-radius: 11px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  background: var(--primary);
  color: #fff;
  width: 100%;
}
.btn:active { background: var(--primary-dark); }
.btn.secondary { background: var(--card); color: var(--text); border: 1px solid var(--border); }
.btn.danger { background: var(--danger); }
.btn.ghost { background: none; color: var(--primary); border: 1px solid var(--primary); }
.btn.small { padding: 8px 12px; font-size: 13px; width: auto; border-radius: 9px; }

/* ---------- Feed ---------- */
.feed-head { margin-bottom: 14px; }

.search-row { display: flex; gap: 10px; }

.search-row .input { flex: 1; }

.chips { display: flex; gap: 8px; overflow-x: auto; padding: 12px 2px 6px; scrollbar-width: none; }
.chips::-webkit-scrollbar { display: none; }

.chip {
  flex-shrink: 0;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-soft);
  cursor: pointer;
  white-space: nowrap;
}
.chip.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.chip .cnt { opacity: .7; font-weight: 400; margin-left: 4px; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(158px, 1fr)); gap: 12px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  transition: transform .12s ease;
}
.card:active { transform: scale(.97); }

.card-thumb {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--primary-soft);
  display: block;
}

.card-icon {
  width: 100%;
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-soft);
  font-size: 40px;
}

.card-body { padding: 10px 12px 12px; display: flex; flex-direction: column; gap: 4px; flex: 1; }

.card-title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  overflow-wrap: anywhere;
}

.card-meta { font-size: 12px; color: var(--text-soft); margin-top: auto; }

.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
}

.empty {
  text-align: center;
  color: var(--text-soft);
  padding: 60px 20px;
  font-size: 15px;
}
.empty .big { font-size: 44px; display: block; margin-bottom: 12px; }

/* ---------- Detail ---------- */
.detail { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }

.detail-head { padding: 18px 18px 12px; }
.detail-title { margin: 0 0 6px; font-size: 21px; overflow-wrap: anywhere; }
.detail-meta { font-size: 13px; color: var(--text-soft); }
.detail-subject { margin-bottom: 8px; }
.detail-desc { margin: 10px 18px 0; white-space: pre-wrap; color: var(--text); font-size: 15px; }

.detail-media { border-top: 1px solid var(--border); background: #0f172a; }
.detail-media img, .detail-media embed, .detail-media iframe {
  display: block;
  width: 100%;
  border: 0;
  background: #fff;
}
.detail-media img { max-height: 72vh; object-fit: contain; }
.detail-media embed { height: 72vh; }

.detail-actions { display: flex; flex-wrap: wrap; gap: 10px; padding: 16px 18px; }
.detail-actions .btn { width: auto; }

.back-link { display: inline-block; margin-bottom: 12px; color: var(--primary); text-decoration: none; font-size: 14px; font-weight: 600; }

/* ---------- Upload ---------- */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 34px 16px;
  text-align: center;
  cursor: pointer;
  background: var(--card);
  transition: border-color .15s ease, background .15s ease;
}
.dropzone.dragover { border-color: var(--primary); background: var(--primary-soft); }
.dropzone .dz-icon { font-size: 40px; }
.dropzone p { margin: 8px 0 0; color: var(--text-soft); font-size: 14px; }

.preview-img { max-width: 100%; max-height: 240px; border-radius: 10px; margin-top: 12px; }

.upload-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; }

.seg { display: flex; gap: 8px; margin-bottom: 16px; }
.seg .btn { flex: 1; }
.seg .btn:not(.active) { background: var(--card); color: var(--text-soft); border: 1px solid var(--border); }

.progress { height: 8px; background: var(--border); border-radius: 99px; overflow: hidden; margin-top: 12px; }
.progress > div { height: 100%; background: var(--primary); width: 0; transition: width .2s; }

/* ---------- Admin ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 10px; margin-bottom: 18px; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow); }
.stat .num { font-size: 24px; font-weight: 800; color: var(--primary); }
.stat .lbl { font-size: 12px; color: var(--text-soft); }

.req-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 14px; margin-bottom: 12px; }
.req-title { font-weight: 700; font-size: 15px; }
.req-reason { color: var(--text-soft); font-size: 14px; margin: 6px 0 10px; overflow-wrap: anywhere; }
.req-actions { display: flex; gap: 8px; }

.section-title { font-size: 16px; font-weight: 700; margin: 18px 0 10px; }

/* ---------- Settings ---------- */
.settings-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; margin-bottom: 14px; }
.settings-card h3 { margin: 0 0 12px; font-size: 15px; }
.qr-img { display: block; width: 180px; height: 180px; margin: 12px auto; border-radius: 12px; }
.url-copy { display: flex; gap: 8px; align-items: center; }
.url-copy .input { flex: 1; font-size: 13px; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 8px 0; }

/* ---------- Modal / Toast ---------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, .5);
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal {
  background: var(--card);
  border-radius: 16px;
  padding: 20px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-lg);
  max-height: 82vh;
  overflow-y: auto;
}
.modal h3 { margin: 0 0 14px; }
.modal .actions { display: flex; gap: 10px; margin-top: 16px; }

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(96px + var(--safebottom));
  transform: translateX(-50%);
  background: #1e293b;
  color: #fff;
  padding: 11px 20px;
  border-radius: 999px;
  font-size: 14px;
  z-index: 90;
  box-shadow: var(--shadow-lg);
  max-width: 90vw;
}
.toast.error { background: var(--danger); }
.toast.ok { background: var(--ok); }

.spinner {
  width: 34px; height: 34px;
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  margin: 40px auto;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Responsive ---------- */
@media (min-width: 640px) {
  #view { padding: 24px 20px calc(96px + var(--safebottom)); }
  .grid { grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 16px; }
}