/* =========================================================
   Wallex Influencer Dashboard — Stylesheet
   Dark fintech aesthetic with gold accents
   ========================================================= */

:root {
  /* Brand palette */
  --navy-900: #060912;
  --navy-800: #0a0e1a;
  --navy-700: #11182b;
  --navy-600: #1a2238;
  --navy-500: #232d47;
  --navy-400: #2f3a58;

  --gold-500: #f0b429;
  --gold-400: #f4c44e;
  --gold-300: #f8d77a;

  --green-500: #00d4aa;
  --green-400: #2dd4bf;
  --red-500: #ff4757;
  --red-400: #ff6b78;
  --orange-500: #ff9f43;
  --blue-500: #4dabf7;
  --purple-500: #9775fa;
  --pink-500: #f783ac;

  --text-100: #ffffff;
  --text-200: #d8dde8;
  --text-300: #9aa3b8;
  --text-400: #6b7390;
  --text-500: #4a516a;

  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

/* ---------- Reset ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--navy-900);
  color: var(--text-200);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: var(--gold-400); text-decoration: none; }
a:hover { color: var(--gold-300); }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select, textarea { font-family: inherit; font-size: 14px; }
img { max-width: 100%; display: block; }

/* ---------- Layout ---------- */
.app {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

/* ---------- Sidebar ---------- */
.sidebar {
  background: var(--navy-800);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 8px 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.sidebar-brand-logo {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--gold-500), var(--gold-300));
  display: grid; place-items: center;
  font-weight: 800; color: var(--navy-900);
  font-size: 18px;
}
.sidebar-brand-text {
  display: flex; flex-direction: column;
}
.sidebar-brand-text strong {
  color: var(--text-100); font-size: 15px; letter-spacing: 0.3px;
}
.sidebar-brand-text span {
  color: var(--text-400); font-size: 11px; text-transform: uppercase; letter-spacing: 1.2px;
}
.sidebar-section-label {
  color: var(--text-500);
  text-transform: uppercase;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.4px;
  padding: 16px 12px 8px;
}
.sidebar-link {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-300);
  font-size: 13.5px;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
}
.sidebar-link:hover {
  background: var(--navy-700);
  color: var(--text-100);
}
.sidebar-link.active {
  background: var(--navy-600);
  color: var(--gold-400);
  position: relative;
}
.sidebar-link.active::before {
  content: ''; position: absolute; left: 0; top: 8px; bottom: 8px;
  width: 3px; background: var(--gold-500); border-radius: 2px;
}
.sidebar-link svg { width: 18px; height: 18px; flex-shrink: 0; }
.sidebar-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-500);
  text-align: center;
}

/* ---------- Main ---------- */
.main {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* ---------- Topbar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  background: var(--navy-800);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-left { display: flex; align-items: center; gap: 16px; }
.topbar-title {
  color: var(--text-100); font-size: 18px; font-weight: 700;
}
.topbar-subtitle { color: var(--text-400); font-size: 13px; }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.topbar-actions { display: flex; gap: 8px; }
.connection-indicator {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  background: rgba(0, 212, 170, 0.1);
  color: var(--green-500);
  border: 1px solid rgba(0, 212, 170, 0.3);
}
.connection-indicator.mock {
  background: rgba(240, 180, 41, 0.1);
  color: var(--gold-400);
  border-color: rgba(240, 180, 41, 0.3);
}
.connection-indicator.error {
  background: rgba(255, 71, 87, 0.1);
  color: var(--red-500);
  border-color: rgba(255, 71, 87, 0.3);
}
.connection-indicator::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: currentColor;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  transition: all 0.15s;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--gold-500);
  color: var(--navy-900);
}
.btn-primary:hover { background: var(--gold-400); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(240, 180, 41, 0.3); }
.btn-secondary {
  background: var(--navy-600);
  color: var(--text-200);
  border-color: var(--border);
}
.btn-secondary:hover { background: var(--navy-500); color: var(--text-100); }
.btn-ghost {
  background: transparent;
  color: var(--text-300);
}
.btn-ghost:hover { background: var(--navy-700); color: var(--text-100); }
.btn-danger {
  background: var(--red-500);
  color: var(--text-100);
}
.btn-danger:hover { background: var(--red-400); }
.btn svg { width: 16px; height: 16px; }
.btn-sm { padding: 6px 11px; font-size: 12px; }

/* ---------- Content ---------- */
.content {
  padding: 28px 32px;
  flex: 1;
  overflow-x: hidden;
}
.section { margin-bottom: 36px; }
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px;
}
.section-title {
  color: var(--text-100);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.2px;
}
.section-subtitle {
  color: var(--text-400);
  font-size: 12px;
  margin-top: 2px;
}

/* ---------- KPI cards ---------- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}
.kpi-card {
  background: var(--navy-800);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.15s, transform 0.15s;
}
.kpi-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.kpi-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent-color, var(--gold-500));
  opacity: 0.7;
}
.kpi-card.gold { --accent-color: var(--gold-500); }
.kpi-card.green { --accent-color: var(--green-500); }
.kpi-card.blue { --accent-color: var(--blue-500); }
.kpi-card.purple { --accent-color: var(--purple-500); }
.kpi-card.orange { --accent-color: var(--orange-500); }
.kpi-card.red { --accent-color: var(--red-500); }

.kpi-label {
  display: flex; align-items: center; gap: 8px;
  color: var(--text-400);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.1px;
  margin-bottom: 12px;
}
.kpi-icon {
  width: 22px; height: 22px;
  border-radius: 5px;
  background: var(--accent-color, var(--gold-500));
  display: grid; place-items: center;
  color: var(--navy-900);
  opacity: 0.9;
}
.kpi-icon svg { width: 14px; height: 14px; }
.kpi-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-100);
  letter-spacing: -0.5px;
  font-feature-settings: 'tnum';
}
.kpi-delta {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 11.5px;
  font-weight: 600;
  margin-top: 6px;
}
.kpi-delta.up { color: var(--green-500); }
.kpi-delta.down { color: var(--red-500); }
.kpi-delta.flat { color: var(--text-400); }

/* ---------- Cards / Panels ---------- */
.panel {
  background: var(--navy-800);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px;
}
.panel-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-100);
  letter-spacing: 0.2px;
}
.panel-actions { display: flex; gap: 6px; }

/* ---------- Tables ---------- */
.table-wrap {
  background: var(--navy-800);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.table thead th {
  background: var(--navy-700);
  color: var(--text-400);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.table tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-200);
  vertical-align: middle;
}
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr:hover { background: rgba(255, 255, 255, 0.02); }
.table .col-num { text-align: right; font-feature-settings: 'tnum'; font-variant-numeric: tabular-nums; }
.table-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-400);
}
.table-empty-icon {
  width: 48px; height: 48px;
  margin: 0 auto 12px;
  opacity: 0.4;
}

/* ---------- Status badges ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 9px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  border: 1px solid;
  white-space: nowrap;
}
.badge::before {
  content: ''; width: 5px; height: 5px; border-radius: 50%; background: currentColor;
}
.badge.pending  { color: var(--gold-400);   background: rgba(240, 180, 41, 0.08);  border-color: rgba(240, 180, 41, 0.25); }
.badge.posted   { color: var(--blue-500);   background: rgba(77, 171, 247, 0.08);  border-color: rgba(77, 171, 247, 0.25); }
.badge.verified { color: var(--green-500);  background: rgba(0, 212, 170, 0.08);   border-color: rgba(0, 212, 170, 0.25); }
.badge.late     { color: var(--orange-500); background: rgba(255, 159, 67, 0.08);  border-color: rgba(255, 159, 67, 0.25); }
.badge.missed   { color: var(--red-500);    background: rgba(255, 71, 87, 0.08);   border-color: rgba(255, 71, 87, 0.25); }
.badge.removed  { color: var(--text-400);   background: rgba(154, 163, 184, 0.08); border-color: rgba(154, 163, 184, 0.25); }
.badge.active   { color: var(--green-500);  background: rgba(0, 212, 170, 0.08);   border-color: rgba(0, 212, 170, 0.25); }
.badge.paused   { color: var(--gold-400);   background: rgba(240, 180, 41, 0.08);  border-color: rgba(240, 180, 41, 0.25); }
.badge.archived { color: var(--text-400);   background: rgba(154, 163, 184, 0.08); border-color: rgba(154, 163, 184, 0.25); }
.badge.completed{ color: var(--green-500);  background: rgba(0, 212, 170, 0.08);   border-color: rgba(0, 212, 170, 0.25); }
.badge.planned  { color: var(--blue-500);   background: rgba(77, 171, 247, 0.08);  border-color: rgba(77, 171, 247, 0.25); }
.badge.cancelled{ color: var(--red-500);    background: rgba(255, 71, 87, 0.08);   border-color: rgba(255, 71, 87, 0.25); }

/* ---------- Platform pill ---------- */
.platform-pill {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 2px 9px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
}
.platform-pill svg { width: 12px; height: 12px; }
.platform-pill.instagram { background: linear-gradient(135deg, rgba(247, 131, 172, 0.15), rgba(151, 117, 250, 0.15)); color: #f783ac; border: 1px solid rgba(247, 131, 172, 0.3); }
.platform-pill.facebook  { background: rgba(77, 171, 247, 0.12); color: var(--blue-500); border: 1px solid rgba(77, 171, 247, 0.3); }
.platform-pill.tiktok    { background: rgba(0, 212, 170, 0.12); color: var(--green-500); border: 1px solid rgba(0, 212, 170, 0.3); }
.platform-pill.x         { background: rgba(216, 221, 232, 0.08); color: var(--text-200); border: 1px solid rgba(216, 221, 232, 0.2); }
.platform-pill.youtube,
.platform-pill.youtube-shorts { background: rgba(255, 71, 87, 0.12); color: var(--red-400); border: 1px solid rgba(255, 71, 87, 0.3); }
.platform-pill.snapchat  { background: rgba(240, 180, 41, 0.12); color: var(--gold-400); border: 1px solid rgba(240, 180, 41, 0.3); }

/* ---------- Avatar ---------- */
.avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--navy-600);
  color: var(--gold-400);
  display: grid; place-items: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
  border: 1px solid var(--border-strong);
  text-transform: uppercase;
}
.avatar-lg { width: 56px; height: 56px; font-size: 18px; }
.avatar-sm { width: 24px; height: 24px; font-size: 10px; }

.user-cell {
  display: flex; align-items: center; gap: 10px;
}
.user-cell-info { display: flex; flex-direction: column; min-width: 0; }
.user-cell-name { color: var(--text-100); font-weight: 600; font-size: 13px; }
.user-cell-handle { color: var(--text-400); font-size: 11px; }

/* ---------- Progress bar ---------- */
.progress {
  background: var(--navy-600);
  border-radius: 100px;
  height: 6px;
  overflow: hidden;
  position: relative;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gold-500), var(--gold-300));
  border-radius: 100px;
  transition: width 0.4s ease;
}
.progress-fill.green { background: linear-gradient(90deg, var(--green-500), var(--green-400)); }
.progress-fill.red   { background: linear-gradient(90deg, var(--red-500), var(--red-400)); }

/* ---------- Forms ---------- */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 20px;
}
.form-row { display: flex; flex-direction: column; gap: 6px; }
.form-row.full { grid-column: 1 / -1; }
.form-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-300);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  display: flex; align-items: center; gap: 6px;
}
.form-label .req { color: var(--gold-500); }
.form-hint { font-size: 11.5px; color: var(--text-500); margin-top: 2px; }
.input, .select, .textarea {
  background: var(--navy-700);
  border: 1px solid var(--border-strong);
  color: var(--text-100);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  outline: none;
  transition: border 0.15s, background 0.15s;
}
.input:focus, .select:focus, .textarea:focus {
  border-color: var(--gold-500);
  background: var(--navy-600);
}
.input::placeholder, .textarea::placeholder { color: var(--text-500); }
.textarea { resize: vertical; min-height: 80px; font-family: inherit; }
.select {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%239aa3b8' stroke-width='2'><path d='M1 1l5 5 5-5'/></svg>");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}
.input-file {
  background: var(--navy-700);
  border: 1px dashed var(--border-strong);
  padding: 24px;
  text-align: center;
  border-radius: var(--radius-sm);
  color: var(--text-400);
  font-size: 12.5px;
  cursor: pointer;
  transition: all 0.15s;
}
.input-file:hover { border-color: var(--gold-500); color: var(--text-200); }
.input-file input[type="file"] { display: none; }
.form-actions {
  display: flex; gap: 10px; justify-content: flex-end;
  margin-top: 8px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  grid-column: 1 / -1;
}

/* ---------- Filters bar ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  background: var(--navy-800);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 16px;
}
.filter-bar .select, .filter-bar .input { min-width: 140px; padding: 7px 10px; font-size: 12.5px; }
.filter-bar .select { padding-right: 26px; }
.filter-spacer { flex: 1; }

/* ---------- Toast / alerts ---------- */
.alert {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 13px;
  display: flex; align-items: flex-start; gap: 10px;
  border: 1px solid;
}
.alert-info  { background: rgba(77, 171, 247, 0.08);  color: var(--blue-500);    border-color: rgba(77, 171, 247, 0.3); }
.alert-warn  { background: rgba(240, 180, 41, 0.08);  color: var(--gold-400);    border-color: rgba(240, 180, 41, 0.3); }
.alert-error { background: rgba(255, 71, 87, 0.08);   color: var(--red-500);     border-color: rgba(255, 71, 87, 0.3); }
.alert-ok    { background: rgba(0, 212, 170, 0.08);   color: var(--green-500);   border-color: rgba(0, 212, 170, 0.3); }
.alert strong { color: inherit; }
.alert svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 1px; }

.toast {
  position: fixed;
  top: 24px; right: 24px;
  background: var(--navy-700);
  border: 1px solid var(--border-strong);
  padding: 12px 18px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  color: var(--text-100);
  font-size: 13px;
  font-weight: 500;
  z-index: 1000;
  transform: translateX(120%);
  transition: transform 0.3s ease;
  display: flex; align-items: center; gap: 10px;
}
.toast.show { transform: translateX(0); }
.toast.success { border-left: 3px solid var(--green-500); }
.toast.error { border-left: 3px solid var(--red-500); }

/* ---------- Influencer cards (roster grid) ---------- */
.roster-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.influencer-card {
  background: var(--navy-800);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex; flex-direction: column;
  transition: transform 0.15s, border-color 0.15s;
}
.influencer-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
}
.influencer-card-head {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 16px;
}
.influencer-card-name { color: var(--text-100); font-weight: 700; font-size: 14px; }
.influencer-card-handle { color: var(--text-400); font-size: 12px; }
.influencer-card-stats {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
  margin: 4px 0 14px;
  padding: 12px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-label { color: var(--text-500); font-size: 10px; text-transform: uppercase; letter-spacing: 1px; font-weight: 600; }
.stat-value { color: var(--text-100); font-size: 16px; font-weight: 700; font-feature-settings: 'tnum'; }
.influencer-card-platforms { display: flex; flex-wrap: wrap; gap: 4px; margin-top: auto; }

/* ---------- Campaign cards ---------- */
.campaign-card {
  background: var(--navy-800);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex; flex-direction: column;
  gap: 14px;
  transition: border-color 0.15s, transform 0.15s;
}
.campaign-card:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.campaign-card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.campaign-card-title { color: var(--text-100); font-weight: 700; font-size: 15px; margin-bottom: 4px; }
.campaign-card-code { color: var(--text-500); font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.5px; }
.campaign-card-dates { color: var(--text-400); font-size: 12px; }
.campaign-card-meta {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.campaign-card-progress { margin-top: 4px; }
.campaign-card-progress-label {
  display: flex; justify-content: space-between;
  font-size: 11.5px; color: var(--text-400); margin-bottom: 6px;
  font-weight: 600;
}

/* ---------- Charts ---------- */
.chart-bar {
  display: grid; grid-template-columns: 90px 1fr 60px; align-items: center;
  gap: 12px;
  padding: 8px 0;
  font-size: 12.5px;
}
.chart-bar-label { color: var(--text-300); font-weight: 500; }
.chart-bar-track {
  height: 10px;
  background: var(--navy-700);
  border-radius: 5px;
  overflow: hidden;
}
.chart-bar-fill {
  height: 100%;
  border-radius: 5px;
  transition: width 0.5s ease;
}
.chart-bar-value { text-align: right; color: var(--text-100); font-weight: 700; font-feature-settings: 'tnum'; }

/* ---------- Two-col layout ---------- */
.split {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 18px;
}
@media (max-width: 1100px) {
  .split { grid-template-columns: 1fr; }
}

/* ---------- Loading state ---------- */
.loading {
  display: flex; align-items: center; justify-content: center;
  padding: 60px;
  color: var(--text-400);
  font-size: 13px;
  gap: 10px;
}
.spinner {
  width: 18px; height: 18px;
  border: 2px solid var(--navy-600);
  border-top-color: var(--gold-500);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .sidebar {
    position: relative; height: auto; flex-direction: row;
    flex-wrap: wrap; padding: 12px;
  }
  .sidebar-brand { border: 0; margin: 0 8px 0 0; padding: 0 8px 0 0; }
  .sidebar-section-label { display: none; }
  .sidebar-link { padding: 6px 10px; font-size: 12.5px; }
  .sidebar-link.active::before { display: none; }
  .sidebar-footer { display: none; }
  .content { padding: 20px 16px; }
  .topbar { padding: 14px 16px; }
  .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .kpi-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .kpi-card { padding: 14px; }
  .kpi-value { font-size: 22px; }
}