/* ── Reset & variables ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0d0f18;
  --surface:     #161924;
  --surface-2:   #1e2130;
  --border:      #252840;
  --border-2:    #2e3355;
  --accent:      #6366f1;
  --accent-h:    #4f52d6;
  --accent-dim:  rgba(99,102,241,.12);
  --text:        #e8eaf6;
  --text-2:      #9699c4;
  --text-3:      #5b5f8a;
  --success:     #22c55e;
  --warning:     #f59e0b;
  --danger:      #ef4444;
  --sidebar-w:   240px;
  --radius:      8px;
  --radius-lg:   12px;
  --shadow:      0 4px 24px rgba(0,0,0,.4);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', sans-serif;
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

/* ── Utility ───────────────────────────────────────────────────────────────── */
.hidden { display: none !important; }

/* ── Auth ──────────────────────────────────────────────────────────────────── */
.auth-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at top, #1a1d35 0%, var(--bg) 60%);
}
.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 380px;
  box-shadow: var(--shadow);
}
.brand { font-size: 26px; font-weight: 700; margin-bottom: 4px; }
.brand-accent { color: var(--accent); }
.auth-sub { color: var(--text-2); font-size: 13px; margin-bottom: 28px; }

/* ── App layout ────────────────────────────────────────────────────────────── */
#app-shell { display: flex; min-height: 100vh; }

/* ── Sidebar ───────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
}
.sidebar-brand {
  font-size: 18px;
  font-weight: 700;
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--border);
}
.sidebar-nav { flex: 1; padding: 12px 10px; display: flex; flex-direction: column; gap: 2px; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius);
  color: var(--text-2);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  transition: all .15s;
}
.nav-item svg { width: 16px; height: 16px; flex-shrink: 0; fill: currentColor; }
.nav-item:hover { background: var(--surface-2); color: var(--text); }
.nav-item.active { background: var(--accent-dim); color: var(--accent); }
.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.sidebar-user { display: flex; align-items: center; gap: 10px; overflow: hidden; }
.avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--accent-dim);
  color: var(--accent);
  font-weight: 700;
  font-size: 13px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
#sidebar-username { color: var(--text-2); font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ── Page outlet ───────────────────────────────────────────────────────────── */
.page-outlet { margin-left: var(--sidebar-w); flex: 1; padding: 32px; min-height: 100vh; }

/* ── Page header ───────────────────────────────────────────────────────────── */
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.page-title { font-size: 22px; font-weight: 700; }
.page-actions { display: flex; gap: 10px; align-items: center; }

/* ── Stats row ─────────────────────────────────────────────────────────────── */
.stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
}
.stat-label { font-size: 12px; color: var(--text-2); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 8px; }
.stat-value { font-size: 28px; font-weight: 700; color: var(--text); }
.stat-value.green  { color: var(--success); }
.stat-value.amber  { color: var(--warning); }
.stat-value.red    { color: var(--danger); }
.stat-value.purple { color: var(--accent); }

/* ── Card ──────────────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.card-title { font-size: 15px; font-weight: 600; }
.card-actions { display: flex; gap: 8px; align-items: center; }

/* ── Table ─────────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
thead th {
  padding: 11px 16px;
  text-align: left;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--text-3);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
tbody td { padding: 12px 16px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: rgba(255,255,255,.02); }
.td-actions { display: flex; gap: 6px; }
.empty-row td { text-align: center; padding: 48px; color: var(--text-3); }

/* ── Badges ────────────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}
.badge::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: currentColor; }
.badge-active   { background: rgba(34,197,94,.12);  color: var(--success); }
.badge-inactive { background: rgba(239,68,68,.12);  color: var(--danger); }
.badge-online   { background: rgba(34,197,94,.12);  color: var(--success); }
.badge-offline  { background: rgba(91,95,99,.12);   color: var(--text-3); }
.badge-paid     { background: rgba(34,197,94,.12);  color: var(--success); }
.badge-sent     { background: rgba(99,102,241,.12); color: var(--accent); }
.badge-draft    { background: rgba(91,95,99,.12);   color: var(--text-2); }
.badge-void     { background: rgba(239,68,68,.12);  color: var(--danger); }
.badge-warning  { background: rgba(245,158,11,.12); color: var(--warning); }

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all .15s;
  white-space: nowrap;
  text-decoration: none;
}
.btn svg { width: 14px; height: 14px; fill: currentColor; flex-shrink: 0; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-h); }
.btn-secondary { background: var(--surface-2); color: var(--text); border: 1px solid var(--border-2); }
.btn-secondary:hover { background: var(--border); }
.btn-danger-soft { background: rgba(239,68,68,.1); color: var(--danger); }
.btn-danger-soft:hover { background: rgba(239,68,68,.2); }
.btn-ghost { background: transparent; color: var(--text-2); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text); border-color: var(--border-2); }
.btn-block { width: 100%; justify-content: center; padding: 10px; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--text-2);
  transition: all .15s;
}
.btn-icon svg { width: 16px; height: 16px; fill: currentColor; }
.btn-icon:hover { background: var(--surface-2); color: var(--text); }

/* ── Search / filter ───────────────────────────────────────────────────────── */
.search-input {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 7px 12px;
  border-radius: var(--radius);
  font-size: 13px;
  outline: none;
  width: 220px;
  transition: border .15s;
}
.search-input:focus { border-color: var(--accent); }
.search-input::placeholder { color: var(--text-3); }

/* ── Forms ─────────────────────────────────────────────────────────────────── */
.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-2);
  margin-bottom: 6px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border .15s;
}
.field textarea { min-height: 80px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--accent); }
.field select option { background: var(--surface-2); }
.form-error { color: var(--danger); font-size: 12px; margin-top: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* ── Modal ─────────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.65);
  display: flex; align-items: center; justify-content: center;
  z-index: 200;
  backdrop-filter: blur(3px);
}
.modal-box {
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-lg);
  width: 520px;
  max-width: 95vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border);
}
.modal-title { font-size: 17px; font-weight: 600; }
.modal-body { padding: 24px; overflow-y: auto; }
.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
}

/* ── Toast ─────────────────────────────────────────────────────────────────── */
#toast-container { position: fixed; bottom: 24px; right: 24px; z-index: 300; display: flex; flex-direction: column; gap: 10px; }
.toast {
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 13px;
  box-shadow: var(--shadow);
  animation: slideIn .2s ease;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 240px;
  max-width: 340px;
}
.toast.success { border-left: 3px solid var(--success); }
.toast.error   { border-left: 3px solid var(--danger); }
.toast.info    { border-left: 3px solid var(--accent); }
@keyframes slideIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }

/* ── Checkbox group ────────────────────────────────────────────────────────── */
.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 8px;
  margin-top: 8px;
}
.checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
}
.checkbox-item input[type="checkbox"] { accent-color: var(--accent); }
.checkbox-item label { cursor: pointer; }

/* ── Section label ─────────────────────────────────────────────────────────── */
.section-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-3);
  margin-bottom: 8px;
}

/* ── Tabs (inside page) ────────────────────────────────────────────────────── */
.tab-bar { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.tab-btn {
  padding: 9px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all .15s;
  margin-bottom: -1px;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ── Loader ────────────────────────────────────────────────────────────────── */
.loader { text-align: center; padding: 48px; color: var(--text-3); }