/* =========================================================
   Design tokens
   ========================================================= */

:root {
  --color-bg: #f6f8fb;
  --color-surface: #ffffff;
  --color-surface-muted: #eef3f8;
  --color-border: #d9e2ec;
  --color-text: #122033;
  --color-text-soft: #5b6b7f;
  --color-accent: #122033;
  --color-accent-contrast: #ffffff;
  --color-danger: #b42318;
  --color-danger-soft: #fef3f2;
  --color-success: #146c43;
  --color-success-soft: #dcfce7;

  --shadow-sm: 0 4px 12px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 16px 40px rgba(15, 23, 42, 0.08);

  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  --container: 1120px;
  --container-narrow: 40rem;
  --control-height: 2.85rem;
  --transition-fast: 160ms ease;
  --focus-ring: 0 0 0 4px rgba(18, 32, 51, 0.1);
}

/* =========================================================
   Base
   ========================================================= */

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background: linear-gradient(180deg, #f8fafc 0%, var(--color-bg) 100%);
}

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

button,
input,
textarea,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
}

/* =========================================================
   Layout helpers and utilities
   ========================================================= */

.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

.page {
  padding: var(--space-8) 0 var(--space-12);
}

.stack > * + * {
  margin-top: var(--space-4);
}

.stack-lg > * + * {
  margin-top: var(--space-6);
}

.meta-text,
.field-help,
.char-counter,
.cover-name {
  margin: 0;
  color: var(--color-text-soft);
  font-size: 0.95rem;
}

.is-hidden {
  display: none !important;
}

/* =========================================================
   layout.html
   ========================================================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(248, 250, 252, 0.84);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(217, 226, 236, 0.92);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) 0;
}

.site-header__spacer {
  display: none;
  width: 3rem;
  min-width: 3rem;
  height: 3rem;
}

.site-brand {
  min-width: 0;
}

.site-brand__title {
  display: inline-block;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
}

.site-brand--header {
  text-align: left;
}

.site-brand--menu {
  padding-right: var(--space-4);
}

.nav-toggle {
  position: fixed;
  inline-size: 1px;
  block-size: 1px;
  inset: 0 auto auto 0;
  opacity: 0;
  pointer-events: none;
}

.nav,
.page-actions,
.button-row,
.card-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.nav {
  justify-content: flex-end;
}

.nav-items {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-items__item {
  display: flex;
  align-items: center;
}

.nav-items__form,
.inline-form {
  margin: 0;
}

.nav-items__link {
  text-decoration: none;
  color: var(--color-text-soft);
}

.nav-items__link:hover,
.nav-items__link:focus-visible {
  color: var(--color-text);
}

/* Desktop: rendre Déconnexion visuellement identique à Connexion */
.nav--desktop .nav-items__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: auto;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  color: var(--color-text-soft);
  text-decoration: none;
  font-weight: 400;
  line-height: inherit;
}

.nav--desktop .nav-items__button:hover,
.nav--desktop .nav-items__button:focus-visible {
  color: var(--color-text);
  outline: none;
  transform: none;
  box-shadow: none;
}

.nav-toggle-button,
.mobile-menu__close {
  position: relative;
  display: none;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  min-width: 3rem;
  min-height: 3rem;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.nav-toggle-button:hover,
.nav-toggle-button:focus-visible,
.mobile-menu__close:hover,
.mobile-menu__close:focus-visible {
  border-color: #c4d1df;
  background: var(--color-surface);
}

.nav-toggle-button:active,
.mobile-menu__close:active {
  transform: scale(0.98);
}

.nav-toggle-button__line,
.mobile-menu__close-line {
  position: absolute;
  width: 1.15rem;
  height: 2px;
  border-radius: 999px;
  background: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle-button__line:nth-child(2) {
  transform: translateY(-0.32rem);
}

.nav-toggle-button__line:nth-child(3) {
  transform: translateY(0);
}

.nav-toggle-button__line:nth-child(4) {
  transform: translateY(0.32rem);
}

.mobile-menu__close-line:nth-child(2) {
  transform: rotate(45deg);
}

.mobile-menu__close-line:nth-child(3) {
  transform: rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 40;
  pointer-events: none;
}

.mobile-menu__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(18, 32, 51, 0.46);
  opacity: 0;
  transition: opacity 220ms ease;
}

.mobile-menu__panel {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: var(--space-8);
  width: 100vw;
  min-height: 100dvh;
  padding: max(1.25rem, env(safe-area-inset-top)) 1.25rem max(1.5rem, env(safe-area-inset-bottom));
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.98) 0%, rgba(255, 255, 255, 0.98) 100%);
  opacity: 0;
  transform: translateY(-1.25rem);
  transition: opacity 220ms ease, transform 220ms ease;
  overflow-y: auto;
}

.mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.mobile-menu__title {
  font-size: 1.25rem;
  font-weight: 700;
}

.mobile-menu__nav {
  align-content: start;
}

.mobile-menu__nav .nav-items {
  display: grid;
  gap: var(--space-4);
}

.mobile-menu__nav .nav-items__item,
.mobile-menu__nav .nav-items__form {
  width: 100%;
}

.mobile-menu__nav .nav-items__link,
.mobile-menu__nav .nav-items__button {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 3.5rem;
  width: 100%;
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow-sm);
  color: var(--color-text);
  text-align: center;
  text-decoration: none;
  font-weight: 600;
}

.mobile-menu__nav .nav-items__link:hover,
.mobile-menu__nav .nav-items__link:focus-visible,
.mobile-menu__nav .nav-items__button:hover,
.mobile-menu__nav .nav-items__button:focus-visible {
  border-color: #c4d1df;
  background: var(--color-surface);
}

#nav-toggle:checked ~ .mobile-menu {
  pointer-events: auto;
}

#nav-toggle:checked ~ .mobile-menu .mobile-menu__backdrop,
#nav-toggle:checked ~ .mobile-menu .mobile-menu__panel {
  opacity: 1;
}

#nav-toggle:checked ~ .mobile-menu .mobile-menu__panel {
  transform: translateY(0);
}

#nav-toggle:checked ~ .site-header .nav-toggle-button {
  opacity: 0;
  pointer-events: none;
}

.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;
}

.flash {
  margin-bottom: var(--space-5);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.flash--success {
  color: var(--color-success);
  background: var(--color-success-soft);
  border-color: #b7ebc6;
}

.flash--error {
  color: var(--color-danger);
  background: var(--color-danger-soft);
  border-color: #f7c5c0;
}

/* =========================================================
   Shared sections and components
   ========================================================= */

.page-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--space-5);
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
}

.page-header--compact {
  margin-bottom: 0;
}

.page-title,
.article-title {
  margin: 0;
  font-size: clamp(2rem, 2vw + 1rem, 3rem);
  line-height: 1.1;
}

.article-excerpt {
  margin: 0;
  color: var(--color-text-soft);
  font-size: 1.05rem;
}

.card,
.panel,
.prose,
.empty-state,
.media-picker,
.auth-shell,
.error-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
}

.card,
.panel,
.prose,
.media-picker,
.auth-shell,
.error-card {
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.panel,
.prose,
.media-picker,
.auth-shell,
.error-card {
  padding: var(--space-5);
}

.empty-state {
  padding: var(--space-8);
  border: 1px dashed var(--color-border);
}

.card-grid,
.field,
.media-picker__grid {
  display: grid;
  gap: var(--space-4);
}

.card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
}

.field {
  gap: var(--space-2);
}

.field-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.field-label {
  margin: 0;
  font-weight: 600;
}

.control {
  width: 100%;
  min-height: var(--control-height);
  padding: 0.85rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fff;
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.control:focus {
  outline: none;
  border-color: #91a4bb;
  box-shadow: var(--focus-ring);
}

textarea.control {
  min-height: 10rem;
  resize: vertical;
}

.button,
.tool-button,
.media-picker__item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  text-decoration: none;
  transition: transform var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.button,
.tool-button {
  border-radius: var(--radius-pill);
}

.button {
  min-height: var(--control-height);
  padding: 0.7rem 1rem;
  border: 1px solid var(--color-accent);
  background: var(--color-accent);
  color: var(--color-accent-contrast);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button--ghost,
.tool-button,
.media-picker__item {
  background: #fff;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.button--danger {
  background: var(--color-danger);
  border-color: var(--color-danger);
  color: #fff;
}

.button--small {
  min-height: 2.35rem;
  padding: 0.45rem 0.8rem;
}

.tool-button {
  min-height: 2.5rem;
  padding: 0.5rem 0.9rem;
}

.button--ghost:focus-visible,
.tool-button:hover,
.tool-button:focus-visible,
.media-picker__item:hover,
.media-picker__item:focus-visible {
  outline: none;
  border-color: #91a4bb;
  box-shadow: var(--focus-ring);
}

.media-frame {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.media-frame--square {
  aspect-ratio: 1;
}

.media-frame--large {
  min-height: 18rem;
}

.media-frame--placeholder {
  display: grid;
  place-items: center;
  padding: var(--space-4);
  background: linear-gradient(135deg, #e2e8f0, #f8fafc);
  border: 1px dashed var(--color-border);
  color: var(--color-text-soft);
  text-align: center;
}

.article-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.card-body,
.article-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
}

.card-title {
  margin: 0;
  font-size: 1.3rem;
  line-height: 1.25;
}

.card-title__link,
.card-media-link {
  color: inherit;
  text-decoration: none;
}

.card-title__link:hover,
.card-title__link:focus-visible {
  text-decoration: underline;
}

.card-summary {
  color: inherit;
  margin: 0;
}

.card-actions {
  margin-top: auto;
}

.card-actions > * {
  flex: 1 1 auto;
}

.card-actions form {
  margin: 0;
}

.card-actions .button {
  width: 100%;
}

/* =========================================================
   Public pages
   ========================================================= */

.article {
  max-width: 56rem;
  margin-inline: auto;
}

.article-header {
  margin-bottom: var(--space-5);
}

.article-cover {
  margin-bottom: var(--space-5);
}

.prose :first-child {
  margin-top: 0;
}

.prose :last-child {
  margin-bottom: 0;
}

.prose h1,
.prose h2,
.prose h3,
.prose h4,
.prose h5,
.prose h6 {
  margin: 1.4rem 0 0.7rem;
  font-size: 1.35rem;
  line-height: 1.25;
}

.prose p,
.prose ul,
.prose ol,
.prose blockquote,
.prose pre {
  margin: 0 0 1rem;
}

.prose ul,
.prose ol {
  padding-left: 1.5rem;
}

.prose ul {
  list-style: disc;
}

.prose ol {
  list-style: decimal;
}

.prose blockquote {
  margin-left: 0;
  padding-left: var(--space-4);
  color: var(--color-text-soft);
  border-left: 3px solid var(--color-border);
}

.prose pre {
  overflow: auto;
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: #122033;
  color: #e5edf7;
}

.prose code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* =========================================================
   Admin pages
   ========================================================= */

.editor-layout {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
}

.editor-layout.is-picker-open {
  grid-template-columns: minmax(0, 2fr) minmax(320px, 1fr);
}

.editor-form {
  min-width: 0;
}

.editor-textarea {
  min-height: 22rem;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-muted);
}

.media-picker {
  display: grid;
  gap: var(--space-4);
  background: var(--color-surface-muted);
}

.editor-layout.is-picker-open .media-picker {
  position: sticky;
  top: var(--space-6);
}

.media-picker__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.media-picker__grid {
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.media-picker__item {
  display: grid;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  text-align: left;
  align-content: start;
}

.media-picker__name {
  font-size: 0.95rem;
}

.cover-field {
  gap: var(--space-3);
}

.cover-picker {
  display: grid;
  gap: var(--space-4);
  align-items: start;
  min-width: 0;
}

.cover-picker .button-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.cover-picker .button-row > * {
  min-width: 0;
}

.cover-preview {
  width: 100%;
}

/* =========================================================
   Auth and error pages
   ========================================================= */

.auth-shell {
  width: min(100%, var(--container-narrow));
  margin-inline: auto;
}

.error-page {
  padding: var(--space-8) 0 var(--space-12);
}

.error-card {
  max-width: 42rem;
  margin: 0 auto;
}

.error-page__code {
  margin: 0 0 var(--space-3);
  color: var(--color-text-soft);
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.error-page__title {
  margin: 0 0 var(--space-4);
  font-size: clamp(2rem, 2vw + 1rem, 3rem);
  line-height: 1.1;
}

.error-page__message,
.error-page__hint {
  margin: 0 0 var(--space-4);
  color: var(--color-text-soft);
}

.error-page__actions {
  margin-top: var(--space-5);
}

/* =========================================================
   Pagination
   ========================================================= */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.pagination__info {
  font-size: 0.875rem;
  color: var(--color-text-soft);
}

.pagination__disabled {
  opacity: 0.35;
  pointer-events: none;
}

/* =========================================================
   Responsive
   ========================================================= */

@media (max-width: 1080px) {
  .editor-layout,
  .editor-layout.is-picker-open {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 960px) {
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .cover-picker {
    display: block;
  }

  .cover-picker > * + * {
    margin-top: var(--space-4);
  }

  .page-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav,
  .page-actions {
    width: 100%;
    justify-content: flex-start;
  }

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

@media (max-width: 640px) {
  .page {
    padding: var(--space-6) 0 var(--space-10);
  }

  .container {
    width: min(100% - 1rem, var(--container));
  }

  .panel,
  .prose,
  .media-picker,
  .empty-state,
  .auth-shell,
  .error-card {
    padding: var(--space-4);
  }

  .card-body,
  .article-card__body {
    padding: var(--space-4);
  }

  .button {
    width: 100%;
  }

  .tool-button,
  .button--small {
    width: auto;
  }

  .nav > *,
  .page-actions > *,
  .button-row > *,
  .card-actions > * {
    flex: 1 1 100%;
  }
}

/* =========================================================
   Responsive navigation
   ========================================================= */

@media (max-width: 720px) {
  .site-header {
    backdrop-filter: none;
    background: rgba(248, 250, 252, 0.98);
  }

  .site-header__inner {
    display: grid;
    grid-template-columns: 3rem minmax(0, 1fr) 3rem;
    align-items: center;
    gap: var(--space-3);
    min-height: 5.25rem;
  }

  .site-brand--header {
    grid-column: 2;
    justify-self: center;
    width: 100%;
    text-align: center;
  }

  .site-brand--header .site-brand__title {
    display: block;
  }

  .nav--desktop {
    display: none;
  }

  .nav-toggle-button,
  .mobile-menu__close,
  .site-header__spacer {
    display: inline-flex;
  }

  .nav-toggle-button {
    grid-column: 1;
    justify-self: start;
  }

  .site-header__spacer {
    grid-column: 3;
    justify-self: end;
  }

  .page {
    padding-top: var(--space-6);
  }
}

@media (min-width: 721px) {
  .mobile-menu {
    display: none;
  }
}