/* ===================================================
   WhatsApp Campaigns - Premium Dark UI
   =================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

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

:root {
  --bg-base:      #0d0f14;
  --bg-card:      #161922;
  --bg-card2:     #1e2230;
  --bg-hover:     #252a38;
  --border:       #2a2f40;
  --border-light: #353b52;

  --green:        #25d366;
  --green-dim:    #1a9e4b;
  --green-glow:   rgba(37, 211, 102, 0.15);
  --blue:         #4f8ef7;
  --blue-dim:     #3a6fd4;
  --yellow:       #f5a623;
  --red:          #f04f4f;
  --purple:       #a78bfa;

  --text-primary:   #e8eaf0;
  --text-secondary: #8892a4;
  --text-muted:     #4a5168;

  --radius:       12px;
  --radius-lg:    18px;
  --radius-sm:    8px;

  --shadow-card:  0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow:  0 0 24px rgba(37,211,102,0.2);

  --sidebar-w:    240px;
  --topbar-h:     64px;

  --transition:   all 0.2s cubic-bezier(0.4,0,0.2,1);
}

html, body {
  height: 100%;
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  overflow: hidden;
}

/* ─── Scrollbar ─────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }

/* ─── Layout ────────────────────────────────────── */
.app-layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ─── Sidebar ───────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: 100;
  transition: var(--transition);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo .logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--green), var(--green-dim));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(37,211,102,0.3);
  flex-shrink: 0;
}

.sidebar-logo .logo-text {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}
.sidebar-logo .logo-text span {
  display: block;
  font-size: 10px;
  font-weight: 400;
  color: var(--text-secondary);
  margin-top: 1px;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 12px 10px;
}

.nav-section-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 12px 10px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 13.5px;
  transition: var(--transition);
  border: 1px solid transparent;
  margin-bottom: 2px;
  user-select: none;
}

.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--green-glow);
  border-color: rgba(37, 211, 102, 0.2);
  color: var(--green);
}

.nav-item .nav-icon { font-size: 16px; width: 20px; text-align: center; flex-shrink: 0; }
.nav-item .nav-badge {
  margin-left: auto;
  background: var(--green);
  color: #000;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 20px;
}

.sidebar-footer {
  padding: 12px 10px;
  border-top: 1px solid var(--border);
}

/* WhatsApp Status indicator in sidebar */
.wa-status-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg-card2);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
}
.wa-status-bar:hover { border-color: var(--border-light); }
.wa-status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  flex-shrink: 0;
  transition: var(--transition);
}
.wa-status-dot.connected { background: var(--green); box-shadow: 0 0 6px var(--green); }
.wa-status-dot.connecting { background: var(--yellow); animation: pulse 1s infinite; }
.wa-status-text { font-size: 12px; font-weight: 500; color: var(--text-secondary); flex: 1; }
.wa-status-label { font-size: 10px; color: var(--text-muted); }

/* ─── Main Content ──────────────────────────────── */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.topbar {
  height: var(--topbar-h);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 28px;
  gap: 16px;
  flex-shrink: 0;
}

.topbar-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  flex: 1;
}
.topbar-title small {
  display: block;
  font-size: 12px;
  font-weight: 400;
  color: var(--text-secondary);
  margin-top: 1px;
}

.page-content {
  flex: 1;
  overflow-y: auto;
  padding: 28px;
}

/* ─── Cards ─────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-card);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

/* ─── Stats Grid ────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.stat-card:hover { border-color: var(--border-light); transform: translateY(-1px); }
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
}
.stat-card.green::before  { background: linear-gradient(90deg, var(--green), transparent); }
.stat-card.blue::before   { background: linear-gradient(90deg, var(--blue), transparent); }
.stat-card.yellow::before { background: linear-gradient(90deg, var(--yellow), transparent); }
.stat-card.purple::before { background: linear-gradient(90deg, var(--purple), transparent); }

.stat-icon {
  font-size: 22px;
  margin-bottom: 12px;
  opacity: 0.9;
}
.stat-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}
.stat-label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 6px;
}

/* ─── Buttons ───────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  line-height: 1;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--green), var(--green-dim));
  color: #fff;
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(37,211,102,0.35); }

.btn-secondary {
  background: var(--bg-card2);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}
.btn-secondary:hover { background: var(--bg-hover); }

.btn-danger {
  background: rgba(240, 79, 79, 0.12);
  color: var(--red);
  border: 1px solid rgba(240, 79, 79, 0.25);
}
.btn-danger:hover { background: rgba(240, 79, 79, 0.2); }

.btn-warning {
  background: rgba(245, 166, 35, 0.12);
  color: var(--yellow);
  border: 1px solid rgba(245, 166, 35, 0.25);
}
.btn-warning:hover { background: rgba(245, 166, 35, 0.2); }

.btn-icon {
  padding: 8px;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-icon:hover { background: var(--bg-hover); color: var(--text-primary); }

.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; box-shadow: none !important; }
.btn-sm { padding: 6px 12px; font-size: 12px; }

/* ─── Table ─────────────────────────────────────── */
.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

thead tr {
  background: var(--bg-card2);
  border-bottom: 1px solid var(--border);
}

th {
  padding: 11px 14px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

tbody tr:hover { background: var(--bg-hover); }
tbody tr:last-child { border-bottom: none; }

td {
  padding: 12px 14px;
  color: var(--text-primary);
  vertical-align: middle;
}

.td-muted { color: var(--text-secondary); font-size: 12px; }

/* ─── Badges ────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}
.badge-green  { background: rgba(37,211,102,0.12); color: var(--green); }
.badge-blue   { background: rgba(79,142,247,0.12); color: var(--blue); }
.badge-yellow { background: rgba(245,166,35,0.12); color: var(--yellow); }
.badge-red    { background: rgba(240,79,79,0.12);  color: var(--red); }
.badge-gray   { background: rgba(136,146,164,0.12); color: var(--text-secondary); }
.badge-purple { background: rgba(167,139,250,0.12); color: var(--purple); }

/* ─── Forms ─────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 7px;
  letter-spacing: 0.03em;
}

.form-control {
  width: 100%;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 13.5px;
  padding: 10px 13px;
  outline: none;
  transition: var(--transition);
  -webkit-appearance: none;
}

.form-control:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(37,211,102,0.1);
}

.form-control::placeholder { color: var(--text-muted); }

textarea.form-control {
  resize: vertical;
  min-height: 90px;
}

select.form-control option { background: var(--bg-card2); }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 5px;
}

/* ─── File upload area ──────────────────────────── */
.upload-area {
  border: 2px dashed var(--border-light);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}
.upload-area:hover, .upload-area.drag { border-color: var(--green); background: var(--green-glow); }
.upload-area input[type="file"] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
}
.upload-area .upload-icon { font-size: 28px; margin-bottom: 8px; }
.upload-area .upload-text { font-size: 13px; color: var(--text-secondary); }
.upload-area .upload-text strong { color: var(--green); }
.upload-area .upload-sub { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

/* ─── Modal ─────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
  opacity: 0; pointer-events: none;
  transition: opacity 0.2s;
}
.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  width: 90%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 24px 64px rgba(0,0,0,0.6);
  transform: scale(0.95) translateY(10px);
  transition: transform 0.2s cubic-bezier(0.4,0,0.2,1);
}
.modal-overlay.open .modal { transform: scale(1) translateY(0); }
.modal-lg { max-width: 700px; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.modal-title { font-size: 16px; font-weight: 700; }
.modal-close {
  background: none; border: none; cursor: pointer;
  color: var(--text-secondary); font-size: 20px;
  padding: 4px; border-radius: 6px;
  transition: var(--transition);
}
.modal-close:hover { color: var(--text-primary); background: var(--bg-hover); }
.modal-footer {
  display: flex; justify-content: flex-end; gap: 10px;
  margin-top: 24px; padding-top: 20px;
  border-top: 1px solid var(--border);
}

/* ─── Progress bar ──────────────────────────────── */
.progress-bar {
  background: var(--bg-card2);
  border-radius: 99px;
  height: 6px;
  overflow: hidden;
  margin-top: 6px;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--green), var(--blue));
  border-radius: 99px;
  transition: width 0.5s ease;
}

/* ─── Empty State ───────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.empty-state .empty-icon { font-size: 48px; margin-bottom: 16px; opacity: 0.4; }
.empty-state p { font-size: 14px; max-width: 280px; margin: 0 auto; line-height: 1.6; }

/* ─── Toast notifications ───────────────────────── */
.toast-container {
  position: fixed;
  bottom: 24px; right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 320px;
}
.toast {
  display: flex; align-items: flex-start; gap: 10px;
  background: var(--bg-card2);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 12px 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  animation: slideIn 0.3s ease;
  font-size: 13px;
}
.toast.success { border-left: 3px solid var(--green); }
.toast.error   { border-left: 3px solid var(--red); }
.toast.info    { border-left: 3px solid var(--blue); }
.toast-icon { font-size: 16px; flex-shrink: 0; margin-top: 1px; }
.toast-msg  { flex: 1; color: var(--text-primary); line-height: 1.4; }

/* ─── QR Code modal ─────────────────────────────── */
.qr-wrap {
  text-align: center;
  padding: 20px;
}
.qr-wrap img {
  width: 220px; height: 220px;
  border-radius: 12px;
  background: #fff;
  padding: 8px;
  margin: 0 auto 16px;
  display: block;
}
.qr-instruction {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 280px;
  margin: 0 auto;
}

/* ─── Tabs ──────────────────────────────────────── */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-card2);
  padding: 4px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}
.tab {
  flex: 1;
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  text-align: center;
  color: var(--text-secondary);
  transition: var(--transition);
  border: none; background: none; font-family: inherit;
}
.tab.active {
  background: var(--bg-card);
  color: var(--text-primary);
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

/* ─── Search bar ────────────────────────────────── */
.search-bar {
  position: relative;
}
.search-bar .search-icon {
  position: absolute; left: 11px; top: 50%; transform: translateY(-50%);
  color: var(--text-muted); font-size: 14px; pointer-events: none;
}
.search-bar .form-control { padding-left: 34px; }

/* ─── Animations ────────────────────────────────── */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}
@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeIn 0.3s ease; }

/* ─── Responsive ────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { width: 60px; }
  .sidebar-logo .logo-text,
  .nav-item span:not(.nav-icon),
  .nav-section-label,
  .nav-badge,
  .wa-status-text,
  .wa-status-label { display: none; }
  .nav-item { justify-content: center; }
  .form-row { grid-template-columns: 1fr; }
  .page-content { padding: 16px; }
}