/* ==========================================================================
   GenHub CRM — Design System
   Typography & colour palette derived from Generator Hub
   ========================================================================== */

/* ---------- Google Fonts (Generator Hub) ---------- */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700&family=Questrial&family=Roboto:wght@300;400;500&display=swap');

/* ---------- Custom Properties ---------- */
:root {
  /* Generator Hub Typography */
  --font-heading: 'Questrial', sans-serif;
  --font-body: 'Roboto', sans-serif;
  --font-ui: 'Montserrat', sans-serif;

  /* Generator Hub Colours */
  --color-black: #111111;
  --color-white: #ffffff;
  --color-body-text: #2b2b2b;
  --color-light-text: #a2a2a2;
  --color-border: #919191;
  --color-bg-warm: #faf8f7;
  --color-bg-warm-alt: #f5f2f0;

  /* CRM Accent Colours */
  --color-primary: #2b2b2b;
  --color-primary-hover: #111111;
  --color-success: #16a34a;
  --color-danger: #dc2626;
  --color-warning: #f59e0b;
  --color-info: #3b82f6;

  /* CRM Layout */
  --sidebar-width: 220px;
  --sidebar-collapsed: 56px;
  --header-height: 56px;
  --content-max: 1200px;

  /* Surfaces */
  --color-surface: #ffffff;
  --color-surface-alt: #faf8f7;
  --color-gray-100: #f5f2f0;
  --color-gray-200: #e5e2df;
  --color-gray-300: #d4d1ce;
  --color-gray-400: #a2a2a2;
  --color-gray-500: #919191;
  --color-gray-600: #6b6b6b;
  --color-gray-700: #4a4a4a;

  /* Effects */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
  --radius: 6px;
  --radius-lg: 10px;
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-body-text);
  background-color: var(--color-surface-alt);
}

img { max-width: 100%; height: auto; display: block; }

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}

ul, ol { list-style: none; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  color: var(--color-black);
  line-height: 1.2;
}

h1 { font-size: 28px; }
h2 { font-size: 22px; }
h3 { font-size: 18px; }
h4 { font-size: 16px; }

/* ---------- App Shell ---------- */
.app-layout {
  display: flex;
  min-height: 100vh;
  padding-top: var(--header-height);
}

/* ---------- Header ---------- */
.app-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--color-black);
  white-space: nowrap;
}

.header-logo-mark {
  width: 28px;
  height: 28px;
  background: var(--color-black);
  color: var(--color-white);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 400;
}

.header-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  color: var(--color-gray-600);
  overflow: hidden;
}

.header-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.header-user-name {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-gray-600);
}

.header-logout {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-gray-400);
  cursor: pointer;
}

.header-logout:hover {
  color: var(--color-body-text);
}

/* ---------- Sidebar ---------- */
.app-sidebar {
  width: var(--sidebar-width);
  min-height: calc(100vh - var(--header-height));
  background: var(--color-white);
  border-right: 1px solid var(--color-gray-200);
  padding: 16px 0;
  flex-shrink: 0;
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  overflow-y: auto;
  z-index: 90;
}

.nav-section-label {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-gray-400);
  padding: 12px 20px 6px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-gray-600);
  transition: color var(--transition), background var(--transition);
}

.nav-link:hover {
  color: var(--color-black);
  background: var(--color-gray-100);
}

.nav-link.active {
  color: var(--color-black);
  background: var(--color-gray-100);
  font-weight: 600;
}

.nav-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  stroke-width: 1.75;
}

.nav-divider {
  border: none;
  border-top: 1px solid var(--color-gray-200);
  margin: 8px 16px;
}

/* ---------- Main Content ---------- */
.app-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 32px;
  min-width: 0;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-title {
  font-family: var(--font-heading);
  font-size: 24px;
  color: var(--color-black);
}

.breadcrumbs {
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--color-gray-400);
  margin-bottom: 8px;
}

.breadcrumbs a {
  color: var(--color-gray-500);
}

.breadcrumbs a:hover {
  color: var(--color-black);
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 24px;
}

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

.card-title {
  font-family: var(--font-heading);
  font-size: 16px;
  color: var(--color-black);
}

/* ---------- Stat Cards (Dashboard) ---------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
}

.stat-label {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-gray-400);
  margin-bottom: 4px;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 32px;
  color: var(--color-black);
}

/* ---------- Buttons (Generator-derived) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-black);
  padding: 9px 24px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.4;
  white-space: nowrap;
}

.btn:hover {
  border-color: var(--color-black);
  background: var(--color-black);
  color: var(--color-white);
}

.btn-primary {
  background: var(--color-black);
  color: var(--color-white);
  border-color: var(--color-black);
}

.btn-primary:hover {
  background: var(--color-gray-700);
  border-color: var(--color-gray-700);
}

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

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

.btn-sm {
  padding: 5px 14px;
  font-size: 10px;
  letter-spacing: 1px;
}

/* ---------- Toolbar ---------- */
.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.search-input {
  flex: 1;
  min-width: 200px;
  max-width: 360px;
  padding: 8px 14px;
  font-family: var(--font-body);
  font-size: 13px;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius);
  background: var(--color-white);
  color: var(--color-body-text);
  transition: border-color var(--transition);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-black);
}

.search-input::placeholder {
  color: var(--color-gray-400);
}

/* ---------- Tables ---------- */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  background: var(--color-white);
}

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

thead {
  position: sticky;
  top: 0;
  z-index: 1;
}

thead th {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-gray-500);
  background: var(--color-gray-100);
  padding: 10px 16px;
  text-align: left;
  white-space: nowrap;
  border-bottom: 1px solid var(--color-gray-200);
}

tbody td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--color-gray-100);
  color: var(--color-body-text);
  vertical-align: middle;
}

tbody tr {
  cursor: pointer;
  transition: background var(--transition);
}

tbody tr:hover {
  background: var(--color-surface-alt);
}

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

.table-empty {
  text-align: center;
  padding: 48px 16px;
  color: var(--color-gray-400);
  font-family: var(--font-ui);
  font-size: 13px;
}

/* ---------- Pagination ---------- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--color-gray-500);
  border-top: 1px solid var(--color-gray-200);
  background: var(--color-white);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.pagination-btns {
  display: flex;
  gap: 8px;
}

.pagination-btn {
  padding: 4px 12px;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  border: 1px solid var(--color-gray-300);
  background: var(--color-white);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--color-body-text);
  transition: all var(--transition);
}

.pagination-btn:hover:not(:disabled) {
  border-color: var(--color-black);
}

.pagination-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

/* ---------- Forms ---------- */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-label {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-gray-500);
}

.form-input,
.form-select,
.form-textarea {
  padding: 9px 12px;
  font-family: var(--font-body);
  font-size: 14px;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius);
  background: var(--color-white);
  color: var(--color-body-text);
  transition: border-color var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-black);
}

.form-textarea {
  min-height: 80px;
  resize: vertical;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23919191' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.form-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--color-gray-200);
}

/* ---------- Section Dividers ---------- */
.section-title {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-gray-400);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-gray-200);
  margin: 32px 0 20px;
}

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

/* ---------- Detail Page Linked Table ---------- */
.linked-section {
  margin-top: 32px;
}

.linked-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

/* ---------- Toast Notifications ---------- */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius);
  color: var(--color-white);
  z-index: 9999;
  transform: translateY(20px);
  opacity: 0;
  transition: all 0.3s ease;
  max-width: 360px;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast-success { background: var(--color-success); }
.toast-error { background: var(--color-danger); }
.toast-info { background: var(--color-info); }

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 28px;
  min-width: 400px;
  max-width: 90vw;
  box-shadow: var(--shadow-md);
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 18px;
  margin-bottom: 16px;
}

.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 20px;
}

/* ---------- Empty State ---------- */
.empty-state {
  text-align: center;
  padding: 64px 24px;
  color: var(--color-gray-400);
}

.empty-state h3 {
  font-family: var(--font-heading);
  font-size: 20px;
  color: var(--color-gray-500);
  margin-bottom: 8px;
}

.empty-state p {
  font-size: 14px;
  margin-bottom: 20px;
}

/* ---------- Loading ---------- */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
  color: var(--color-gray-400);
  font-family: var(--font-ui);
  font-size: 13px;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .app-sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition);
  }

  .app-sidebar.open {
    transform: translateX(0);
  }

  .app-main {
    margin-left: 0;
    padding: 20px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
}