/* ============================================================
   SMS Platform — Light Theme v4 (Modern Admin)
   Inter font · Sidebar dark indigo · Content white/light
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg-base:        #f1f5f9;
  --bg-surface:     #ffffff;
  --bg-elevated:    #f8fafc;
  --bg-hover:       #f1f5f9;
  --border:         #e2e8f0;
  --border-subtle:  #f1f5f9;

  --text-primary:   #0f172a;
  --text-secondary: #475569;
  --text-muted:     #94a3b8;

  --accent:         #4f46e5;
  --accent-hover:   #4338ca;
  --accent-subtle:  #eef2ff;
  --accent-border:  #c7d2fe;
  --accent-glow:    rgba(79,70,229,.18);

  --green:          #16a34a;
  --green-subtle:   #f0fdf4;
  --green-border:   #bbf7d0;
  --red:            #dc2626;
  --red-subtle:     #fef2f2;
  --red-border:     #fecaca;
  --yellow:         #d97706;
  --yellow-subtle:  #fffbeb;
  --yellow-border:  #fde68a;
  --blue:           #2563eb;
  --blue-subtle:    #eff6ff;
  --blue-border:    #bfdbfe;

  --radius-sm:  5px;
  --radius:     8px;
  --radius-lg:  12px;
  --radius-xl:  16px;

  --shadow-xs:  0 1px 2px rgba(0,0,0,.05);
  --shadow-sm:  0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow:     0 4px 12px rgba(0,0,0,.08);
  --shadow-lg:  0 8px 28px rgba(0,0,0,.12);
  --shadow-focus: 0 0 0 3px rgba(79,70,229,.15);

  --font:       'Inter', system-ui, sans-serif;
  --font-mono:  'JetBrains Mono', monospace;
  --sidebar-w:  240px;
  --topbar-h:   58px;
  --tr:         .14s ease;
}

/* ── Reset ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; }
body { font-family: var(--font); background: var(--bg-base); color: var(--text-primary); line-height: 1.55; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
input, textarea, select, button { font-family: inherit; }
ul { list-style: none; }
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }

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

/* ── Sidebar — dark indigo ──────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: #1e1b4b;
  display: flex; flex-direction: column;
  position: fixed; left: 0; top: 0; bottom: 0;
  z-index: 100;
  transition: transform var(--tr);
}

.sidebar-logo {
  display: flex; align-items: center; gap: 10px;
  padding: 18px 16px 14px;
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.sidebar-logo-icon {
  width: 32px; height: 32px; background: #6366f1;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 8px rgba(99,102,241,.5);
  flex-shrink: 0;
}
.sidebar-logo-icon svg { width: 17px; height: 17px; color: #fff; }
.sidebar-logo-text { font-weight: 700; font-size: .92rem; color: #fff; letter-spacing: -.01em; }
.sidebar-logo-text span { color: #a5b4fc; }

.client-switcher {
  position: relative;
  margin: 10px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.09);
  border-radius: var(--radius);
  padding: 9px 11px;
  display: flex; align-items: center; gap: 9px;
  cursor: pointer;
  transition: background var(--tr);
  user-select: none;
}
.client-switcher:hover { background: rgba(255,255,255,.11); }
.client-dot { width: 7px; height: 7px; background: #4ade80; border-radius: 50%; box-shadow: 0 0 5px #4ade80; flex-shrink: 0; }
.client-name { font-size: .81rem; font-weight: 600; color: #ddd6fe; flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.client-switch-icon { color: rgba(255,255,255,.3); width: 13px; flex-shrink: 0; transition: transform var(--tr); }
.client-dropdown {
  display: none; position: absolute; top: calc(100% + 4px); left: 0; right: 0;
  background: #1e1b4b; border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius); z-index: 200; overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,0,0,.4);
}
.client-dropdown.open { display: block; }
#client-switcher-btn.open .client-switch-icon { transform: rotate(180deg); }
.client-dropdown-item {
  display: block; width: 100%; text-align: left;
  padding: 9px 13px; background: none; border: none;
  color: rgba(255,255,255,.65); font-size: .81rem; font-weight: 500;
  cursor: pointer; transition: background var(--tr);
}
.client-dropdown-item:hover { background: rgba(255,255,255,.09); color: #fff; }
.client-dropdown-item.active { color: #a5b4fc; }

.sidebar-nav { flex: 1; padding: 6px 8px; overflow-y: auto; }
.nav-section-label {
  font-size: .62rem; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: rgba(255,255,255,.28);
  padding: 14px 10px 4px;
}
.nav-item {
  display: flex; align-items: center; gap: 9px;
  padding: 8px 11px; border-radius: var(--radius-sm);
  color: rgba(255,255,255,.55);
  font-size: .845rem; font-weight: 500;
  transition: background var(--tr), color var(--tr);
  position: relative;
}
.nav-item:hover { background: rgba(255,255,255,.07); color: rgba(255,255,255,.9); }
.nav-item.active {
  background: rgba(99,102,241,.22);
  color: #a5b4fc;
  font-weight: 600;
}
.nav-item.active::before {
  content: '';
  position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 3px; height: 50%; background: #818cf8;
  border-radius: 0 2px 2px 0;
}
.nav-item svg { width: 15px; height: 15px; flex-shrink: 0; }
.nav-badge { margin-left: auto; background: #6366f1; color: #fff; font-size: .66rem; font-weight: 700; padding: 1px 6px; border-radius: 99px; }

.sidebar-footer { padding: 8px 10px 10px; border-top: 1px solid rgba(255,255,255,.07); }
.user-card {
  display: flex; align-items: center; gap: 9px;
  padding: 9px 10px; border-radius: var(--radius);
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.07);
}
.user-avatar {
  width: 30px; height: 30px; border-radius: 50%; background: #6366f1;
  display: flex; align-items: center; justify-content: center;
  font-size: .7rem; font-weight: 700; color: #fff; flex-shrink: 0;
}
.user-info { flex: 1; min-width: 0; }
.user-name { font-size: .79rem; font-weight: 600; color: #e0e7ff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { font-size: .68rem; color: rgba(255,255,255,.35); }
.user-logout { color: rgba(255,255,255,.3); transition: color var(--tr); }
.user-logout:hover { color: #f87171; }
.user-logout svg { width: 15px; height: 15px; }

/* ── Main area ──────────────────────────────────── */
.main-content { margin-left: var(--sidebar-w); flex: 1; display: flex; flex-direction: column; min-height: 100vh; }

.topbar {
  height: var(--topbar-h);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  padding: 0 22px; gap: 14px;
  position: sticky; top: 0; z-index: 90;
  box-shadow: var(--shadow-xs);
}
.topbar-title { font-size: .92rem; font-weight: 700; color: var(--text-primary); }
.topbar-breadcrumb { font-size: .76rem; color: var(--text-muted); display: flex; align-items: center; gap: 5px; }
.topbar-breadcrumb a { color: var(--text-muted); }
.topbar-breadcrumb a:hover { color: var(--accent); }
.topbar-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.page-body { padding: 22px; flex: 1; }

/* ── Cards ──────────────────────────────────────── */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-xs);
}
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.card-title { font-size: .88rem; font-weight: 700; color: var(--text-primary); }
.card-subtitle { font-size: .75rem; color: var(--text-muted); margin-top: 2px; }

/* ── Stat cards ─────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(185px, 1fr)); gap: 14px; margin-bottom: 20px; }
.stat-card {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 18px 20px;
  position: relative; overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition: box-shadow var(--tr), transform var(--tr);
}
.stat-card:hover { box-shadow: var(--shadow); transform: translateY(-1px); }
.stat-label { font-size: .68rem; font-weight: 700; color: var(--text-muted); letter-spacing: .06em; text-transform: uppercase; margin-bottom: 6px; }
.stat-value { font-size: 1.75rem; font-weight: 800; color: var(--text-primary); line-height: 1; letter-spacing: -.04em; }
.stat-sub   { font-size: .73rem; color: var(--text-muted); margin-top: 5px; }
.stat-icon  { position: absolute; right: 16px; top: 16px; width: 34px; height: 34px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; }
.stat-icon svg { width: 16px; height: 16px; }
.stat-icon.green  { background: var(--green-subtle);  color: var(--green); }
.stat-icon.blue   { background: var(--blue-subtle);   color: var(--blue); }
.stat-icon.red    { background: var(--red-subtle);    color: var(--red); }
.stat-icon.yellow { background: var(--yellow-subtle); color: var(--yellow); }
.stat-icon.accent { background: var(--accent-subtle); color: var(--accent); }

/* ── Buttons ─────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; font-size: .82rem; font-weight: 600;
  border-radius: var(--radius); border: 1px solid transparent;
  cursor: pointer; transition: all var(--tr);
  white-space: nowrap; text-decoration: none; line-height: 1.2;
}
.btn svg { width: 14px; height: 14px; flex-shrink: 0; }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); box-shadow: 0 1px 3px rgba(79,70,229,.3); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; }
.btn-secondary { background: var(--bg-surface); color: var(--text-secondary); border-color: var(--border); box-shadow: var(--shadow-xs); }
.btn-secondary:hover { background: var(--bg-hover); color: var(--text-primary); border-color: #c8d3de; }
.btn-danger { background: var(--red-subtle); color: var(--red); border-color: var(--red-border); }
.btn-danger:hover { background: var(--red); color: #fff; border-color: var(--red); }
.btn-success { background: var(--green-subtle); color: var(--green); border-color: var(--green-border); }
.btn-success:hover { background: var(--green); color: #fff; }
.btn-ghost { background: transparent; color: var(--text-secondary); border-color: transparent; }
.btn-ghost:hover { background: var(--bg-hover); color: var(--text-primary); }
.btn-sm { padding: 5px 10px; font-size: .75rem; }
.btn-lg { padding: 10px 20px; font-size: .88rem; }
.btn:disabled { opacity: .45; cursor: not-allowed; pointer-events: none; }

/* ── Forms ───────────────────────────────────────── */
.form-group { margin-bottom: 15px; }
.form-label { display: block; font-size: .77rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 5px; }
.form-label .required { color: var(--red); margin-left: 2px; }
.form-input, .form-select, .form-textarea {
  width: 100%; background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text-primary);
  padding: 8px 11px; font-size: .845rem; outline: none;
  transition: border-color var(--tr), box-shadow var(--tr);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-muted); }
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--accent); box-shadow: var(--shadow-focus); }
.form-textarea { resize: vertical; min-height: 100px; line-height: 1.6; }
.form-select option { background: #fff; }
.form-hint  { font-size: .72rem; color: var(--text-muted); margin-top: 4px; }
.form-error { font-size: .72rem; color: var(--red); margin-top: 4px; }
.char-counter { font-size: .71rem; font-family: var(--font-mono); color: var(--text-muted); text-align: right; margin-top: 4px; padding: 2px 7px; background: var(--bg-elevated); border-radius: 4px; display: inline-block; float: right; }
.char-counter.warn { color: var(--yellow); background: var(--yellow-subtle); }
.char-counter.over { color: var(--red); background: var(--red-subtle); }

/* ── Tables ──────────────────────────────────────── */
.table-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; }
thead th { background: var(--bg-elevated); font-size: .68rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted); padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
tbody tr { border-bottom: 1px solid var(--border-subtle); transition: background var(--tr); }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: #f7f9ff; }
tbody td { padding: 10px 14px; font-size: .835rem; color: var(--text-secondary); vertical-align: middle; }
tbody td:first-child { color: var(--text-primary); font-weight: 600; }
.table-empty { text-align: center; padding: 40px 16px; color: var(--text-muted); font-size: .845rem; }

/* ── Message expand button ───────────────────────── */
.msg-expand-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-sm);
  color: var(--accent);
  cursor: pointer;
  transition: all var(--tr);
  flex-shrink: 0;
}
.msg-expand-btn:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.msg-expand-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 1px 4px rgba(79,70,229,.3);
}
.msg-expand-btn svg { width: 13px; height: 13px; display: block; }

/* ── Expanded message row ────────────────────────── */
.msg-expand-row td { padding: 0 !important; }
.msg-expand-body {
  background: var(--accent-subtle);
  border-top: 1px solid var(--accent-border);
  border-bottom: 1px solid var(--accent-border);
  padding: 10px 16px 12px;
}
.msg-expand-label {
  display: flex; align-items: center; gap: 5px;
  font-size: .67rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .07em; color: var(--accent);
  margin-bottom: 6px;
}
.msg-expand-label svg { width: 11px; height: 11px; }
.msg-expand-text {
  font-size: .84rem; color: var(--text-primary);
  line-height: 1.6; white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--font);
}

/* ── Badges ──────────────────────────────────────── */
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: 99px; font-size: .69rem; font-weight: 700; white-space: nowrap; letter-spacing: .01em; }
.badge::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: currentColor; flex-shrink: 0; }
.badge-green  { background: var(--green-subtle);  color: var(--green);  border: 1px solid var(--green-border); }
.badge-red    { background: var(--red-subtle);    color: var(--red);    border: 1px solid var(--red-border); }
.badge-yellow { background: var(--yellow-subtle); color: var(--yellow); border: 1px solid var(--yellow-border); }
.badge-blue   { background: var(--blue-subtle);   color: var(--blue);   border: 1px solid var(--blue-border); }
.badge-accent { background: var(--accent-subtle); color: var(--accent); border: 1px solid var(--accent-border); }
.badge-gray   { background: var(--bg-elevated);   color: var(--text-muted); border: 1px solid var(--border); }

/* ── Progress ────────────────────────────────────── */
.progress-wrap { width: 100%; height: 5px; background: var(--bg-hover); border-radius: 99px; overflow: hidden; }
.progress-bar { height: 100%; background: var(--accent); border-radius: 99px; transition: width .4s ease; }
.progress-bar.green { background: var(--green); }
.progress-bar.red   { background: var(--red); }

/* ── Alerts ──────────────────────────────────────── */
.alert { display: flex; align-items: flex-start; gap: 10px; padding: 12px 14px; border-radius: var(--radius); border: 1px solid; font-size: .83rem; margin-bottom: 14px; }
.alert svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 1px; }
.alert-success { background: var(--green-subtle);  border-color: var(--green-border);  color: var(--green); }
.alert-error   { background: var(--red-subtle);    border-color: var(--red-border);    color: var(--red); }
.alert-warning { background: var(--yellow-subtle); border-color: var(--yellow-border); color: var(--yellow); }
.alert-info    { background: var(--blue-subtle);   border-color: var(--blue-border);   color: var(--blue); }

/* ── Toasts ──────────────────────────────────────── */
#toast-container { position: fixed; bottom: 20px; right: 20px; z-index: 9999; display: flex; flex-direction: column; gap: 8px; pointer-events: none; }
.toast { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 11px 14px; font-size: .82rem; display: flex; align-items: center; gap: 10px; box-shadow: var(--shadow-lg); min-width: 250px; max-width: 350px; pointer-events: all; animation: toastIn .2s ease forwards; color: var(--text-primary); }
.toast.out { animation: toastOut .18s ease forwards; }
.toast svg { width: 16px; height: 16px; flex-shrink: 0; }
.toast.success { border-left: 3px solid var(--green); } .toast.success svg { color: var(--green); }
.toast.error   { border-left: 3px solid var(--red); }   .toast.error svg   { color: var(--red); }
.toast.info    { border-left: 3px solid var(--blue); }  .toast.info svg    { color: var(--blue); }
@keyframes toastIn  { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:none; } }
@keyframes toastOut { from { opacity:1; } to { opacity:0; transform:translateY(4px); } }

/* ── Login ───────────────────────────────────────── */
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg-base); }
.login-box { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 34px; width: 100%; max-width: 400px; box-shadow: var(--shadow-lg); }
.login-logo { display: flex; align-items: center; gap: 12px; justify-content: center; margin-bottom: 26px; }
.login-logo-icon { width: 40px; height: 40px; background: var(--accent); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; box-shadow: 0 3px 12px rgba(79,70,229,.3); }
.login-logo-icon svg { width: 21px; height: 21px; color: #fff; }
.login-title { font-size: 1.25rem; font-weight: 800; color: var(--text-primary); }
.login-title span { color: var(--accent); }
.login-subtitle { text-align: center; font-size: .79rem; color: var(--text-muted); margin-bottom: 22px; margin-top: -16px; }

/* ── Modal ───────────────────────────────────────── */
.modal-overlay { position: fixed; inset: 0; z-index: 500; background: rgba(15,23,42,.35); display: flex; align-items: center; justify-content: center; padding: 20px; opacity: 0; pointer-events: none; transition: opacity var(--tr); }
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 22px; width: 100%; max-width: 520px; max-height: 90vh; overflow-y: auto; transform: scale(.97) translateY(6px); transition: transform var(--tr); box-shadow: var(--shadow-lg); }
.modal-overlay.open .modal { transform: none; }
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.modal-title  { font-size: .95rem; font-weight: 700; }
.modal-close  { background: none; border: none; color: var(--text-muted); cursor: pointer; padding: 4px; border-radius: var(--radius-sm); transition: all var(--tr); }
.modal-close:hover { background: var(--bg-hover); color: var(--text-primary); }
.modal-close svg { width: 17px; height: 17px; }
.modal-footer { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; border-top: 1px solid var(--border); padding-top: 16px; }

/* ── Tabs ────────────────────────────────────────── */
.tabs { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 18px; }
.tab { padding: 9px 15px; font-size: .82rem; font-weight: 600; color: var(--text-muted); cursor: pointer; border: none; background: none; border-bottom: 2px solid transparent; margin-bottom: -1px; transition: all var(--tr); }
.tab:hover { color: var(--text-primary); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ── Misc layouts ────────────────────────────────── */
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.section-title { font-size: 1rem; font-weight: 800; letter-spacing: -.02em; }
.section-sub   { font-size: .76rem; color: var(--text-muted); margin-top: 1px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }

/* ── Phone tag input ─────────────────────────────── */
.tag-input-wrap { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 7px; min-height: 78px; display: flex; flex-wrap: wrap; gap: 5px; cursor: text; transition: border-color var(--tr); }
.tag-input-wrap:focus-within { border-color: var(--accent); box-shadow: var(--shadow-focus); }
.phone-tag { display: inline-flex; align-items: center; gap: 4px; background: var(--accent-subtle); color: var(--accent); border: 1px solid var(--accent-border); border-radius: 4px; padding: 2px 7px; font-size: .75rem; font-weight: 600; font-family: var(--font-mono); }
.phone-tag button { background: none; border: none; color: inherit; cursor: pointer; padding: 0; line-height: 1; opacity: .65; }
.phone-tag button:hover { opacity: 1; }

/* ── Dropzone ────────────────────────────────────── */
.dropzone { border: 2px dashed var(--border); border-radius: var(--radius-lg); padding: 32px 20px; text-align: center; cursor: pointer; transition: all var(--tr); }
.dropzone:hover, .dropzone.drag-over { border-color: var(--accent); background: var(--accent-subtle); }
.dropzone-icon { font-size: 2rem; margin-bottom: 10px; }
.dropzone h3   { font-size: .88rem; font-weight: 600; margin-bottom: 5px; }
.dropzone p    { font-size: .77rem; color: var(--text-muted); }

/* ── Chart wrapper ───────────────────────────────── */
.chart-wrap { position: relative; height: 200px; }

/* ── Pagination ──────────────────────────────────── */
.pagination { display: flex; gap: 3px; justify-content: center; margin-top: 18px; }
.page-btn { width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--bg-surface); color: var(--text-secondary); font-size: .8rem; cursor: pointer; transition: all var(--tr); }
.page-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-subtle); }
.page-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ── Helpers ─────────────────────────────────────── */
.mono { font-family: var(--font-mono); font-size: .79rem; }
.text-green  { color: var(--green); }
.text-red    { color: var(--red); }
.text-yellow { color: var(--yellow); }
.text-blue   { color: var(--blue); }
.text-accent { color: var(--accent); }
.text-muted  { color: var(--text-muted); }
.divider     { height: 1px; background: var(--border); margin: 16px 0; }
.spacer      { height: 18px; }
.flex        { display: flex; align-items: center; }
.gap-8       { gap: 8px; }
.gap-12      { gap: 12px; }
.ml-auto     { margin-left: auto; }
.fw-600      { font-weight: 600; }
.fw-700      { font-weight: 700; }
.fs-sm       { font-size: .77rem; }

.skeleton { background: linear-gradient(90deg, var(--bg-elevated) 25%, var(--bg-hover) 50%, var(--bg-elevated) 75%); background-size: 200% 100%; animation: shimmer 1.4s infinite; border-radius: var(--radius-sm); }
@keyframes shimmer { 0%{background-position:200% 0} 100%{background-position:-200% 0} }

/* ── Responsive ──────────────────────────────────── */
.sidebar-overlay {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,.45);
  z-index: 99; backdrop-filter: blur(1px);
}
.sidebar-toggle-btn { display: none; }

@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: none; }
  .sidebar-overlay.open { display: block; }
  .sidebar-toggle-btn { display: flex; align-items: center; justify-content: center; }
  .main-content { margin-left: 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .page-body { padding: 14px; }
}

/* ── Chart.js light overrides ────────────────────── */
.chartjs-tooltip { background: #fff !important; border: 1px solid var(--border) !important; border-radius: var(--radius) !important; color: var(--text-primary) !important; font-family: var(--font) !important; font-size: .77rem !important; padding: 9px 12px !important; box-shadow: var(--shadow) !important; pointer-events: none !important; }