/*
 * main.css — Corporate Intranet Portal
 *
 * Design principles:
 *  - Strict, minimal, functional enterprise aesthetics
 *  - High readability and predictable UI behaviour
 *  - No decorative noise — structure over style
 *
 * Security note:
 *  - No user-supplied content is inserted via CSS (no CSS injection vectors)
 *  - All dynamic text must be sanitised in JS before DOM insertion (see auth.js, dashboard.js)
 */

/* ─── Reset & Base ──────────────────────────────────────────────────────────── */

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

:root {
  /* Brand palette */
  --color-primary:        #1e3a5f;   /* deep navy — primary actions, sidebar */
  --color-primary-hover:  #16304f;
  --color-accent:         #2563eb;   /* corporate blue — interactive elements */
  --color-accent-hover:   #1d4ed8;
  --color-danger:         #dc2626;   /* error states */
  --color-success:        #16a34a;

  /* Neutrals */
  --color-bg:             #f1f5f9;   /* page background */
  --color-surface:        #ffffff;   /* cards, panels */
  --color-border:         #cbd5e1;
  --color-border-focus:   #2563eb;

  /* Text */
  --color-text-primary:   #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted:     #94a3b8;
  --color-text-inverse:   #f8fafc;

  /* Layout */
  --sidebar-width:        240px;
  --topbar-height:        60px;
  --border-radius:        4px;
  --border-radius-lg:     6px;

  /* Typography */
  --font-sans: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Consolas", monospace;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md:  0 4px 12px rgba(0, 0, 0, 0.10);
  --shadow-lg:  0 8px 24px rgba(0, 0, 0, 0.12);

  /* Transitions */
  --transition-fast: 120ms ease;
  --transition-base: 200ms ease;
}

html {
  font-size: 14px;
  line-height: 1.5;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

/* ─── Utility ───────────────────────────────────────────────────────────────── */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.hidden { display: none !important; }

/* ─── Buttons ───────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1;
  border: 1px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: background-color var(--transition-fast),
              border-color var(--transition-fast),
              color var(--transition-fast),
              box-shadow var(--transition-fast);
  white-space: nowrap;
  user-select: none;
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary */
.btn-primary {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #ffffff;
  text-decoration: none;
}

/* Secondary / outlined */
.btn-secondary {
  background-color: transparent;
  border-color: var(--color-border);
  color: var(--color-text-primary);
}

.btn-secondary:hover {
  background-color: var(--color-bg);
  border-color: #94a3b8;
  color: var(--color-text-primary);
  text-decoration: none;
}

/* Full-width variant */
.btn-block { width: 100%; }

/* Loading state */
.btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn-loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ─── Form Elements ─────────────────────────────────────────────────────────── */

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.form-control {
  width: 100%;
  padding: 9px 12px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--color-text-primary);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  outline: none;
  transition: border-color var(--transition-fast),
              box-shadow var(--transition-fast);
}

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

.form-control:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-control.is-error {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12);
}

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

.form-error {
  font-size: 0.78rem;
  color: var(--color-danger);
}

/* Checkbox */
.form-check {
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-check-input {
  width: 15px;
  height: 15px;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.form-check-label {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  user-select: none;
}

/* ─── Alert / Toast ─────────────────────────────────────────────────────────── */

.alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 11px 14px;
  border-radius: var(--border-radius);
  font-size: 0.85rem;
  line-height: 1.4;
  border: 1px solid transparent;
}

.alert-error {
  background-color: #fef2f2;
  border-color: #fecaca;
  color: #991b1b;
}

.alert-success {
  background-color: #f0fdf4;
  border-color: #bbf7d0;
  color: #166534;
}

.alert-info {
  background-color: #eff6ff;
  border-color: #bfdbfe;
  color: #1e40af;
}

/* ─── Divider ───────────────────────────────────────────────────────────────── */

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-text-muted);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.divider::before,
.divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background-color: var(--color-border);
}

/* ═══════════════════════════════════════════════════════════════════════════════
   LOGIN PAGE
   ═══════════════════════════════════════════════════════════════════════════════ */

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background-color: var(--color-bg);
}

.login-card {
  width: 100%;
  max-width: 420px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.login-card__header {
  padding: 32px 36px 24px;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-primary);
  text-align: center;
}

.login-card__logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 16px;
}

.login-card__logo-icon {
  width: 36px;
  height: 36px;
  fill: #ffffff;
}

.login-card__company {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.02em;
}

.login-card__subtitle {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.65);
  margin-top: 4px;
}

.login-card__body {
  padding: 28px 36px;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.login-form__actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 6px;
}

.login-card__footer {
  padding: 14px 36px;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg);
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.login-card__footer a {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.login-card__footer a:hover {
  color: var(--color-text-secondary);
}

/* ═══════════════════════════════════════════════════════════════════════════════
   DASHBOARD LAYOUT
   ═══════════════════════════════════════════════════════════════════════════════ */

.app-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  grid-template-rows: var(--topbar-height) 1fr;
  grid-template-areas:
    "sidebar topbar"
    "sidebar main";
  min-height: 100vh;
}

/* ─── Sidebar ───────────────────────────────────────────────────────────────── */

.sidebar {
  grid-area: sidebar;
  background-color: var(--color-primary);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 20px;
  height: var(--topbar-height);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}

.sidebar__brand-icon {
  width: 28px;
  height: 28px;
  fill: #ffffff;
  flex-shrink: 0;
}

.sidebar__brand-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar__nav {
  flex: 1;
  padding: 16px 0;
}

.sidebar__nav-section {
  padding: 0 12px;
  margin-bottom: 6px;
}

.sidebar__nav-label {
  font-size: 0.68rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.35);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 8px 8px 4px;
}

.sidebar__nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--border-radius);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  transition: background-color var(--transition-fast),
              color var(--transition-fast);
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.sidebar__nav-item:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  text-decoration: none;
}

.sidebar__nav-item.is-active {
  background-color: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  font-weight: 600;
}

.sidebar__nav-item svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.7;
}

.sidebar__nav-item.is-active svg,
.sidebar__nav-item:hover svg {
  opacity: 1;
}

.sidebar__nav-badge {
  margin-left: auto;
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 10px;
}

.sidebar__footer {
  padding: 14px 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar__user {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar__avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: #ffffff;
  flex-shrink: 0;
  letter-spacing: 0.02em;
}

.sidebar__user-info {
  flex: 1;
  overflow: hidden;
}

.sidebar__user-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: #ffffff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar__user-role {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.45);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ─── Top Bar ───────────────────────────────────────────────────────────────── */

.topbar {
  grid-area: topbar;
  margin-left: var(--sidebar-width);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  height: var(--topbar-height);
  position: sticky;
  top: 0;
  z-index: 90;
}

.topbar__breadcrumb {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.topbar__breadcrumb-sep {
  color: var(--color-text-muted);
}

.topbar__breadcrumb-current {
  color: var(--color-text-primary);
  font-weight: 600;
}

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

.topbar__icon-btn {
  position: relative;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius);
  color: var(--color-text-secondary);
  background: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-fast),
              border-color var(--transition-fast),
              color var(--transition-fast);
}

.topbar__icon-btn:hover {
  background-color: var(--color-bg);
  border-color: var(--color-border);
  color: var(--color-text-primary);
}

.topbar__icon-btn svg {
  width: 16px;
  height: 16px;
}

.topbar__notification-dot {
  position: absolute;
  top: 5px;
  right: 5px;
  width: 7px;
  height: 7px;
  background-color: var(--color-danger);
  border-radius: 50%;
  border: 1.5px solid var(--color-surface);
}

.topbar__user {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px 4px 4px;
  border-radius: var(--border-radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-fast),
              border-color var(--transition-fast);
  background: none;
}

.topbar__user:hover {
  background-color: var(--color-bg);
  border-color: var(--color-border);
}

.topbar__avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.02em;
}

.topbar__user-meta {
  text-align: left;
}

.topbar__user-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.2;
}

.topbar__user-dept {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  line-height: 1.2;
}

.topbar__logout {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: background-color var(--transition-fast),
              color var(--transition-fast),
              border-color var(--transition-fast);
}

.topbar__logout:hover {
  background-color: #fef2f2;
  border-color: #fecaca;
  color: var(--color-danger);
}

.topbar__logout svg {
  width: 14px;
  height: 14px;
}

/* ─── Main Content ──────────────────────────────────────────────────────────── */

.main-content {
  grid-area: main;
  margin-left: var(--sidebar-width);
  padding: 28px 32px;
  min-width: 0;
}

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 24px;
  gap: 16px;
}

.page-header__title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
}

.page-header__subtitle {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 3px;
}

/* ─── Stats Grid ────────────────────────────────────────────────────────────── */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.stat-card__label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.stat-card__label svg {
  width: 14px;
  height: 14px;
  color: var(--color-text-muted);
}

.stat-card__value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1;
  letter-spacing: -0.02em;
}

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

.stat-card__meta .up   { color: var(--color-success); font-weight: 600; }
.stat-card__meta .down { color: var(--color-danger);  font-weight: 600; }

/* ─── Content Grid ──────────────────────────────────────────────────────────── */

.content-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 20px;
  align-items: start;
}

/* ─── Panel / Card ──────────────────────────────────────────────────────────── */

.panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--color-border);
  gap: 12px;
}

.panel__title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: 0.01em;
}

.panel__action {
  font-size: 0.78rem;
  color: var(--color-accent);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  font-family: var(--font-sans);
  transition: color var(--transition-fast);
}

.panel__action:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.panel__body {
  padding: 0;
}

/* ─── Data Table ────────────────────────────────────────────────────────────── */

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.data-table thead tr {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.data-table th {
  padding: 9px 16px;
  text-align: left;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.data-table td {
  padding: 11px 16px;
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

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

.data-table tbody tr:hover td {
  background-color: #f8fafc;
}

.doc-name {
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

.doc-name svg {
  width: 14px;
  height: 14px;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

/* ─── Badge ─────────────────────────────────────────────────────────────────── */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.badge-blue   { background-color: #eff6ff; color: #1d4ed8; }
.badge-green  { background-color: #f0fdf4; color: #15803d; }
.badge-yellow { background-color: #fefce8; color: #a16207; }
.badge-gray   { background-color: #f1f5f9; color: #475569; }
.badge-red    { background-color: #fef2f2; color: #b91c1c; }

/* ─── News Feed ─────────────────────────────────────────────────────────────── */

.news-list {
  list-style: none;
}

.news-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-fast);
}

.news-item:last-child {
  border-bottom: none;
}

.news-item:hover {
  background-color: #f8fafc;
}

.news-item__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.news-item__title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-primary);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.news-item__title:hover {
  color: var(--color-accent);
}

.news-item__date {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.news-item__excerpt {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-clamp: 2;
  overflow: hidden;
}

.news-item__tag {
  margin-top: 2px;
}

/* ─── Responsive ────────────────────────────────────────────────────────────── */

@media (max-width: 1024px) {
  .content-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --sidebar-width: 0px;
  }

  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-base);
  }

  .sidebar.is-open {
    transform: translateX(0);
    width: 240px;
  }

  .topbar,
  .main-content {
    margin-left: 0;
  }

  .main-content {
    padding: 20px 16px;
  }

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