:root {
  --bg: #f3f5fb;
  --sidebar-bg: #161c2d;
  --sidebar-bg-active: #242c44;
  --sidebar-text: #b9c0d4;
  --sidebar-text-active: #ffffff;
  --accent: #5b6cf5;
  --accent-dark: #4453d6;
  --success: #16a34a;
  --success-bg: #e9f9ef;
  --danger: #dc2626;
  --danger-bg: #fdecec;
  --warning: #d97706;
  --warning-bg: #fff6e6;
  --text: #1c2230;
  --muted: #6b7280;
  --card-bg: #ffffff;
  --border: #e6e9f2;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

a { color: inherit; text-decoration: none; }

.layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 250px;
  flex-shrink: 0;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  padding: 22px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px 24px 10px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 18px;
}

.brand-logo {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  object-fit: cover;
  background: #fff;
}

.brand-name {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  line-height: 1.2;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--sidebar-text);
  transition: background 0.15s ease, color 0.15s ease;
}

.sidebar-nav a svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  stroke: currentColor;
}

.sidebar-nav a:hover {
  background: rgba(255,255,255,0.06);
  color: #fff;
}

.sidebar-nav a.active {
  background: var(--accent);
  color: #fff;
}

.sidebar-footer {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
}

.user-chip {
  color: #fff;
  opacity: 0.85;
}

.logout-link {
  color: #ff8a8a;
  font-weight: 500;
}

.logout-link:hover { color: #ffb3b3; }

/* Main content */
.content {
  flex: 1;
  min-width: 0;
  padding: 30px 38px 50px 38px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}

.topbar h1 {
  font-size: 22px;
  font-weight: 700;
  margin: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 10px;
  border: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  transition: background 0.15s ease;
}

.btn:hover { background: var(--accent-dark); }

.btn-secondary {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover { background: #f7f8fc; }

.btn-danger {
  background: #fff;
  color: var(--danger);
  border: 1px solid #f3c9c9;
}

.btn-danger:hover { background: var(--danger-bg); }

.btn-sm { padding: 7px 12px; font-size: 13px; }

/* Flash messages */
.flash-container { margin-bottom: 18px; display: flex; flex-direction: column; gap: 8px; }

.flash {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
}

.flash-success { background: var(--success-bg); color: var(--success); }
.flash-error { background: var(--danger-bg); color: var(--danger); }

/* Cards */
.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 26px;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}

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

.card h3 { font-size: 16px; }

.stat-card .stat-label { font-size: 13px; color: var(--muted); font-weight: 500; }
.stat-card .stat-value { font-size: 28px; font-weight: 700; margin-top: 6px; }

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 18px;
}

.client-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.client-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.client-card-header h3 { margin: 0; font-size: 16px; font-weight: 700; }

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.badge-ativo { background: var(--success-bg); color: var(--success); }
.badge-pausado { background: var(--warning-bg); color: var(--warning); }
.badge-erro { background: var(--danger-bg); color: var(--danger); }

.client-card .meta-row {
  font-size: 13px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.client-card .meta-row strong { color: var(--text); font-weight: 600; }

.client-card-footer {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}

.empty-state {
  background: var(--card-bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  color: var(--muted);
}

/* Tables */
.table-wrap {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

table { width: 100%; border-collapse: collapse; font-size: 14px; }

th, td {
  text-align: left;
  padding: 13px 18px;
  border-bottom: 1px solid var(--border);
}

th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; }

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

.row-actions { display: flex; gap: 8px; }

/* Forms */
.form-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 28px;
  max-width: 780px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 20px;
}

.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 4px; }
.form-group.full { grid-column: 1 / -1; }

label { font-size: 13px; font-weight: 600; color: var(--text); }
.hint { font-size: 12px; color: var(--muted); margin-top: -2px; }

input[type="text"], input[type="password"], input[type="email"], input[type="url"], select, textarea {
  padding: 10px 12px;
  border-radius: 9px;
  border: 1px solid var(--border);
  font-size: 14px;
  font-family: inherit;
  background: #fbfbfd;
  color: var(--text);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
}

textarea { resize: vertical; min-height: 70px; }

.form-actions {
  display: flex;
  justify-content: space-between;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.section-title {
  font-size: 15px;
  font-weight: 700;
  margin: 26px 0 4px 0;
  grid-column: 1 / -1;
}

.section-title:first-child { margin-top: 0; }

/* Login page */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #161c2d, #2a355c);
}

.login-card {
  background: #fff;
  border-radius: 18px;
  padding: 40px 36px;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}

.login-card h1 {
  font-size: 20px;
  margin: 0 0 6px 0;
  text-align: center;
}

.login-card p.subtitle {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin: 0 0 26px 0;
}

.login-card .form-group { margin-bottom: 16px; }

.login-card .btn { width: 100%; justify-content: center; margin-top: 8px; }

.logo-preview {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  object-fit: cover;
  border: 1px solid var(--border);
  background: #fafafa;
}

.tag-pill {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  background: #eef0fb;
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 600;
}

.muted { color: var(--muted); }

@media (max-width: 880px) {
  .form-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
  .sidebar { width: 210px; }
}