:root {
  --primary: #1f4e79;
  --primary-dark: #163a5c;
  --primary-light: #e8eef5;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #0f172a;
  --text-muted: #475569;
  --border: #cbd5e1;
  --error: #b91c1c;
  --error-bg: #fef2f2;
  --success: #15803d;
  --success-bg: #f0fdf4;
  --warn: #b45309;
  --warn-bg: #fffbeb;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
}

*, *::before, *::after {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background-color: var(--bg);
  line-height: 1.5;
  padding-top: env(safe-area-inset-top, 0px);
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
  padding-bottom: calc(68px + env(safe-area-inset-bottom, 0px));
}

a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover, a:focus-visible {
  color: var(--primary-dark);
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 14px;
}

/* Header & Navigation */
.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 40;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 54px;
}

.brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-badge {
  background: var(--primary);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 3px 7px;
  border-radius: 6px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-tabs {
  display: flex;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom, 0px);
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
  z-index: 50;
  overflow-x: auto;
}

.nav-btn {
  flex: 1 0 auto;
  background: transparent;
  border: none;
  border-top: 3px solid transparent;
  padding: 10px 8px;
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
}

.nav-btn.is-active {
  color: var(--primary);
  border-top-color: var(--primary);
  background: var(--primary-light);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--primary);
  color: #fff;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 9px 15px;
  border-radius: 6px;
  border: 1px solid var(--primary);
  cursor: pointer;
  text-decoration: none;
}

.btn:hover, .btn:focus-visible {
  background: var(--primary-dark);
  color: #fff;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--surface);
  color: var(--primary);
  border: 1px solid var(--primary);
}

.btn-secondary:hover, .btn-secondary:focus-visible {
  background: var(--primary-light);
  color: var(--primary-dark);
}

.btn-sm {
  font-size: 0.82rem;
  padding: 5px 10px;
}

/* Main layout & Cards */
.main-content {
  padding: 18px 0 28px;
}

.view-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
}

.view-title {
  font-size: 1.3rem;
  margin: 0;
  color: var(--text);
}

.view-subtitle {
  margin: 2px 0 0;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}

.card-title {
  margin: 0 0 10px;
  font-size: 1.05rem;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

/* Dashboard grids */
.stats-banner {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.stat-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  padding: 12px 14px;
  box-shadow: var(--shadow);
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-weight: 600;
}

.stat-val {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
  margin-top: 2px;
}

.branze-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 18px;
}

.branza-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: var(--shadow);
}

.branza-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid #e2e8f0;
  padding-bottom: 8px;
  margin-bottom: 10px;
}

.branza-header h3 {
  margin: 0;
  font-size: 1.05rem;
  color: var(--primary);
}

.branza-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.metrics-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-bottom: 8px;
}

.metric-pill {
  background: var(--bg);
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 0.83rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.metric-pill strong {
  font-size: 0.95rem;
  color: var(--text);
}

/* Filters & Forms */
.filters-bar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 16px;
}

.field-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 4px;
}

input[type="text"],
input[type="password"],
input[type="email"],
select,
textarea {
  width: 100%;
  padding: 9px 11px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text);
  background: #fff;
  border: 1px solid #94a3b8;
  border-radius: 6px;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(31, 78, 121, 0.18);
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
  text-align: left;
}

.data-table th,
.data-table td {
  padding: 9px 11px;
  border-bottom: 1px solid #e2e8f0;
  vertical-align: top;
}

.data-table th {
  background: var(--primary-light);
  color: var(--text);
  font-weight: 700;
  border-bottom: 2px solid var(--primary);
  white-space: nowrap;
}

.data-table tr:nth-child(even) td {
  background: #f8fafc;
}

/* Status pills */
.tag {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary-dark);
}

.tag-zgoda, .tag-klient, .tag-zakonczona, .tag-wyslano {
  background: var(--success-bg);
  color: var(--success);
}

.tag-odmowa, .tag-nie_pisac, .tag-brak_maila, .tag-odrzucona {
  background: var(--error-bg);
  color: var(--error);
}

.tag-czeka, .tag-napisano, .tag-wysylanie {
  background: var(--warn-bg);
  color: var(--warn);
}

/* Alerts */
.alert {
  padding: 11px 14px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 14px;
}

.alert-error {
  background: var(--error-bg);
  color: var(--error);
  border: 1px solid #fecaca;
}

.alert-success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid #bbf7d0;
}

.alert-info {
  background: var(--primary-light);
  color: var(--primary-dark);
  border: 1px solid #bfdbfe;
}

/* Lead details modal / drawer */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-card {
  background: var(--surface);
  border-radius: var(--radius);
  max-width: 640px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 20px;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.25);
}

.kv-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  margin: 12px 0 16px;
  font-size: 0.86rem;
}

.kv-item {
  padding: 6px 8px;
  background: var(--bg);
  border-radius: 4px;
  word-break: break-word;
}

.kv-item strong {
  color: var(--text-muted);
  display: inline-block;
  min-width: 135px;
}

/* Log viewer */
.log-pre {
  background: #0f172a;
  color: #e2e8f0;
  padding: 14px;
  border-radius: var(--radius);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.8rem;
  line-height: 1.45;
  overflow-x: auto;
  max-height: 540px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}

/* Mail preview card */
.mail-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
  margin-bottom: 10px;
}

.mail-card h4 {
  margin: 0 0 4px;
  font-size: 0.92rem;
  color: var(--primary);
}

.mail-body {
  white-space: pre-wrap;
  font-size: 0.85rem;
  color: var(--text);
  margin: 8px 0 0;
  padding-top: 8px;
  border-top: 1px solid #e2e8f0;
}

/* Login page */
.login-wrap {
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 4px solid var(--primary);
  border-radius: var(--radius);
  padding: 24px 20px;
  box-shadow: var(--shadow);
}

.login-card h1 {
  font-size: 1.35rem;
  margin: 0 0 6px;
}

.login-card p {
  margin: 0 0 18px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.login-group {
  margin-bottom: 14px;
}

.btn-full {
  width: 100%;
}

@media (min-width: 760px) {
  body {
    padding-bottom: 24px;
  }

  .nav-tabs {
    position: static;
    border-top: none;
    border-bottom: 1px solid var(--border);
    padding: 0;
    justify-content: center;
  }

  .nav-btn {
    border-top: none;
    border-bottom: 3px solid transparent;
    padding: 12px 18px;
    font-size: 0.9rem;
  }

  .nav-btn.is-active {
    border-bottom-color: var(--primary);
  }

  .stats-banner {
    grid-template-columns: repeat(4, 1fr);
  }

  .branze-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .filters-bar {
    grid-template-columns: repeat(auto-fit, minmax(165px, 1fr));
    align-items: end;
  }
}