* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a2e;
  --bg-sidebar: #0f0f1a;
  --accent: #7c3aed;
  --accent-light: #9d5cf6;
  --accent-glow: rgba(124, 58, 237, 0.3);
  --text-primary: #f0f0ff;
  --text-secondary: #9090b0;
  --border: #2a2a40;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

/* ── Login Page ── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 60% 40%, rgba(124,58,237,0.15) 0%, transparent 60%),
              radial-gradient(ellipse at 20% 80%, rgba(59,130,246,0.1) 0%, transparent 50%),
              var(--bg-primary);
}

.login-container {
  width: 100%;
  max-width: 420px;
  padding: 20px;
}

.login-logo {
  text-align: center;
  margin-bottom: 40px;
}

.login-logo .brand {
  font-size: 1.6rem;
  font-weight: 700;
  background: linear-gradient(135deg, #7c3aed, #3b82f6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-logo .tagline {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 6px;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 0 40px rgba(124,58,237,0.1);
}

.login-card h2 {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.login-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 28px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.form-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.btn-primary {
  width: 100%;
  padding: 13px;
  background: linear-gradient(135deg, var(--accent), #5b21b6);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  margin-top: 8px;
}

.btn-primary:hover { opacity: 0.9; }
.btn-primary:active { transform: scale(0.99); }

.error-msg {
  color: var(--danger);
  font-size: 0.85rem;
  margin-top: 12px;
  text-align: center;
  display: none;
}

/* ── Dashboard Layout ── */
.dashboard {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 240px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
}

.sidebar-logo {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo .brand {
  font-size: 1.1rem;
  font-weight: 700;
  background: linear-gradient(135deg, #7c3aed, #3b82f6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sidebar-logo .sub {
  font-size: 0.72rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s;
  margin-bottom: 4px;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.nav-item:hover {
  background: rgba(124,58,237,0.1);
  color: var(--text-primary);
}

.nav-item.active {
  background: rgba(124,58,237,0.2);
  color: var(--accent-light);
  border: 1px solid rgba(124,58,237,0.3);
}

.nav-item .icon { font-size: 1.1rem; }

.sidebar-footer {
  padding: 16px 12px;
  border-top: 1px solid var(--border);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 8px;
}

.avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #3b82f6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
}

.user-name { font-size: 0.85rem; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 140px; }
.user-role { font-size: 0.72rem; color: var(--text-secondary); }

.btn-logout {
  width: 100%;
  padding: 9px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-logout:hover {
  border-color: var(--danger);
  color: var(--danger);
}

/* ── Main Content ── */
.main-content {
  margin-left: 240px;
  flex: 1;
  padding: 32px;
  min-height: 100vh;
}

.page-header {
  margin-bottom: 28px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.page-header > div:first-child, .page-header h1, .page-header p {
  flex: 1 1 auto;
}

.month-picker-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

.month-picker-wrap input[type="month"],
.month-picker-wrap select {
  background: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 0.85rem;
  cursor: pointer;
}

.page-header-text {
  flex: 1 1 auto;
}

.page-header h1 {
  font-size: 1.6rem;
  font-weight: 700;
}

.page-header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 4px;
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ── Cards ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), #3b82f6);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  margin: 8px 0 4px;
}

.stat-change {
  font-size: 0.8rem;
  color: var(--success);
}

.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.chart-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-secondary);
}

.chart-card canvas { max-height: 220px; }

/* ── Forms ── */
.form-section {
  margin-bottom: 28px;
}

.form-section h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  color: var(--accent-light);
}

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

.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.9rem;
  resize: vertical;
  min-height: 100px;
  outline: none;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  cursor: pointer;
}

.btn-save {
  padding: 12px 28px;
  background: linear-gradient(135deg, var(--accent), #5b21b6);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn-save:hover { opacity: 0.9; }

.save-success {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--success);
  font-size: 0.85rem;
  margin-left: 12px;
  opacity: 0;
  transition: opacity 0.3s;
}

.save-success.show { opacity: 1; }

/* ── Campaigns ── */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 24px;
}

.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--accent);
  background: rgba(124,58,237,0.05);
}

.upload-zone .upload-icon { font-size: 2.5rem; margin-bottom: 12px; }
.upload-zone p { color: var(--text-secondary); font-size: 0.9rem; }
.upload-zone span { color: var(--accent-light); font-weight: 600; }

#file-input { display: none; }

.table-wrapper {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead {
  background: var(--bg-secondary);
}

th {
  padding: 12px 16px;
  text-align: left;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 13px 16px;
  font-size: 0.9rem;
  border-bottom: 1px solid rgba(42,42,64,0.5);
}

tr:last-child td { border-bottom: none; }

tr:hover td { background: rgba(124,58,237,0.04); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
}

.badge-called {
  background: rgba(16,185,129,0.15);
  color: var(--success);
  border: 1px solid rgba(16,185,129,0.3);
}

.badge-no-answer {
  background: rgba(245,158,11,0.15);
  color: var(--warning);
  border: 1px solid rgba(245,158,11,0.3);
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.empty-state .empty-icon { font-size: 3rem; margin-bottom: 12px; }
.empty-state p { font-size: 0.9rem; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .sidebar { width: 200px; }
  .main-content { margin-left: 200px; padding: 20px; }
  .charts-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}

/* ── Billing ── */
.billing-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.billing-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
}

.billing-section-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.billing-count {
  font-size: 0.8rem;
  background: rgba(124,58,237,0.2);
  color: var(--accent-light);
  border: 1px solid rgba(124,58,237,0.3);
  border-radius: 20px;
  padding: 2px 10px;
  font-weight: 600;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  background: rgba(124,58,237,0.15);
  color: var(--accent-light);
  border: 1px solid rgba(124,58,237,0.3);
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s;
}

.btn-download:hover {
  background: rgba(124,58,237,0.3);
}

.nav-badge {
  margin-left: auto;
  background: var(--danger);
  color: white;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 1px 7px;
  min-width: 18px;
  text-align: center;
}