/**
 * PSH Knowledgebase — Application Styles
 * Premium Swiss Hospitality — Exquisite Swiss Quality
 */

/* ============================================
   BASE / RESET
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body-size);
  line-height: var(--text-body-line);
  color: var(--text-secondary);
  background-color: var(--color-bg);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--font-display-weight);
  color: var(--text-primary);
  line-height: 1.2;
}

h1 {
  font-size: var(--text-page-title-size);
  line-height: var(--text-page-title-line);
}

h2 {
  font-size: var(--text-section-title-size);
  line-height: var(--text-section-title-line);
  font-family: var(--font-body);
  font-weight: var(--text-section-title-weight);
}

h3 {
  font-size: var(--text-accent-size);
  line-height: var(--text-accent-line);
  font-weight: var(--text-accent-weight);
}

h4 {
  font-size: var(--text-subtitle-size);
  line-height: var(--text-subtitle-line);
}

p {
  margin-bottom: var(--space-3);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--color-primary-hover);
}

.accent-text {
  color: var(--color-primary);
}

.muted-text {
  color: var(--text-muted);
  font-size: var(--text-small-size);
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.section {
  padding: var(--section-padding) 0;
}

.section--compact {
  padding: var(--space-7) 0;
}

/* ============================================
   HEADER
   ============================================ */
.header {
  height: var(--header-height);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  height: 48px;
  width: auto;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.header__nav a {
  font-size: var(--text-nav-size);
  color: var(--text-primary);
  font-weight: 400;
}

.header__nav a:hover {
  color: var(--color-primary);
}

.header__nav a.active {
  color: var(--color-primary);
  font-weight: 600;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  background: var(--psh-surface-dark);
  color: var(--text-on-dark);
  padding: var(--space-8) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "PSH";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-display);
  font-size: 400px;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.03);
  pointer-events: none;
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero__title {
  font-size: var(--text-hero-size);
  line-height: var(--text-hero-line);
  color: var(--text-on-dark);
  margin-bottom: var(--space-4);
}

.hero__subtitle {
  font-size: var(--text-subtitle-size);
  line-height: var(--text-subtitle-line);
  color: rgba(255, 255, 255, 0.7);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   TOPIC CARDS
   ============================================ */
.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--grid-gap);
}

.topic-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--card-padding);
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
  position: relative;
}

.topic-card:hover {
  box-shadow: var(--elevation-1);
  border-color: var(--color-primary);
}

.topic-card__icon {
  width: 48px;
  height: 48px;
  background: var(--psh-surface);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  font-size: 24px;
}

.topic-card__title {
  font-size: var(--text-accent-size);
  font-weight: var(--text-accent-weight);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.topic-card__desc {
  font-size: var(--text-small-size);
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}

.topic-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-metadata-size);
  color: var(--text-muted);
}

.topic-card__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  background: var(--psh-surface);
  border-radius: var(--radius-xs);
  font-size: var(--text-metadata-size);
}

.topic-card__badge--public {
  color: var(--color-success);
}

.topic-card__badge--controlled {
  color: var(--color-primary);
}

/* ============================================
   ARTICLE LIST
   ============================================ */
.article-list {
  list-style: none;
}

.article-list__item {
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) 0;
}

.article-list__item:last-child {
  border-bottom: none;
}

.article-list__link {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  text-decoration: none;
}

.article-list__link:hover .article-list__title {
  color: var(--color-primary);
}

.article-list__code {
  font-family: monospace;
  font-size: var(--text-small-size);
  color: var(--color-primary);
  background: rgba(190, 32, 46, 0.08);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-xs);
  white-space: nowrap;
}

.article-list__content {
  flex: 1;
}

.article-list__title {
  font-size: var(--text-body-size);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.article-list__meta {
  font-size: var(--text-small-size);
  color: var(--text-muted);
}

/* ============================================
   DEPARTMENT SECTIONS
   ============================================ */
.department-section {
  margin-bottom: var(--space-7);
}

.department-section__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 2px solid var(--color-primary);
  margin-bottom: var(--space-4);
  cursor: pointer;
}

.department-section__title {
  font-size: var(--text-accent-size);
  font-weight: var(--text-accent-weight);
  color: var(--text-primary);
}

.department-section__count {
  font-size: var(--text-small-size);
  color: var(--text-muted);
  background: var(--psh-surface);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-xs);
}

.department-section__toggle {
  margin-left: auto;
  color: var(--text-muted);
  transition: transform 0.2s ease;
}

.department-section.collapsed .department-section__toggle {
  transform: rotate(-90deg);
}

.department-section.collapsed .article-list {
  display: none;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 40px;
  padding: 0 var(--space-5);
  font-family: var(--font-body);
  font-size: var(--text-button-size);
  font-weight: var(--text-button-weight);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
  text-decoration: none;
}

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

.btn--primary:hover {
  background: var(--color-primary-hover);
  color: var(--psh-white);
}

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

.btn--secondary:hover {
  background: var(--text-primary);
  color: var(--psh-white);
}

.btn--small {
  height: 32px;
  padding: 0 var(--space-3);
  font-size: var(--text-metadata-size);
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: var(--text-small-size);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.form-input {
  width: 100%;
  height: 40px;
  padding: 0 var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-body-size);
  color: var(--text-primary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color 0.15s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-input--error {
  border-color: var(--color-error);
}

.form-error {
  font-size: var(--text-small-size);
  color: var(--color-error);
  margin-top: var(--space-1);
}

/* ============================================
   SEARCH
   ============================================ */
.search-bar {
  display: flex;
  gap: var(--space-2);
  max-width: 500px;
}

.search-bar__input {
  flex: 1;
}

.search-bar__input .form-input {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.search-bar__btn {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ============================================
   FILTER BAR
   ============================================ */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.filter-bar__select {
  min-width: 180px;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--psh-surface-dark);
  color: rgba(255, 255, 255, 0.6);
  padding: var(--space-8) 0 var(--space-5);
  margin-top: var(--space-8);
}

.footer__logo {
  height: 40px;
  margin-bottom: var(--space-4);
  opacity: 0.8;
}

.footer__text {
  font-size: var(--text-small-size);
  line-height: var(--text-body-line);
  margin-bottom: var(--space-4);
}

.footer__motto {
  font-family: var(--font-display);
  font-size: var(--text-subtitle-size);
  color: var(--color-primary);
  margin-top: var(--space-5);
}

/* ============================================
   ADMIN LAYOUT
   ============================================ */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: 250px;
  background: var(--psh-surface-dark);
  padding: var(--space-5);
  flex-shrink: 0;
}

.admin-sidebar__logo {
  height: 32px;
  margin-bottom: var(--space-6);
}

.admin-sidebar__nav {
  list-style: none;
}

.admin-sidebar__nav li {
  margin-bottom: var(--space-2);
}

.admin-sidebar__nav a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3);
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--text-nav-size);
  border-radius: var(--radius-sm);
  transition: background 0.15s ease, color 0.15s ease;
}

.admin-sidebar__nav a:hover,
.admin-sidebar__nav a.active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--psh-white);
}

.admin-main {
  flex: 1;
  padding: var(--space-6);
  background: var(--psh-surface);
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-5);
}

.admin-title {
  font-size: var(--text-section-title-size);
  font-weight: var(--text-section-title-weight);
}

/* ============================================
   ADMIN TABLES
   ============================================ */
.admin-table {
  width: 100%;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--elevation-1);
}

.admin-table th,
.admin-table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.admin-table th {
  background: var(--psh-surface);
  font-size: var(--text-small-size);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.admin-table td {
  font-size: var(--text-body-size);
  color: var(--text-primary);
}

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

.admin-table tr:hover td {
  background: var(--psh-surface);
}

/* ============================================
   ACCESS GRANTS
   ============================================ */
.access-grants {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.access-grant {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--psh-surface);
  border-radius: var(--radius-xs);
  font-size: var(--text-small-size);
}

.access-grant input[type="checkbox"] {
  accent-color: var(--color-primary);
  width: 16px;
  height: 16px;
}

/* ============================================
   LOGIN PAGE
   ============================================ */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--psh-surface);
}

.login-card {
  background: var(--color-bg);
  padding: var(--space-7);
  border-radius: var(--radius-sm);
  box-shadow: var(--elevation-2);
  width: 100%;
  max-width: 400px;
}

.login-card__logo {
  display: block;
  margin: 0 auto var(--space-5);
  height: 48px;
}

.login-card__title {
  text-align: center;
  margin-bottom: var(--space-5);
}

/* ============================================
   BREADCRUMB
   ============================================ */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-small-size);
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}

.breadcrumb a {
  color: var(--text-secondary);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb__separator {
  color: var(--color-border);
}

/* ============================================
   UTILITIES
   ============================================ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }