/* ProfChafik — styles. Mobile first, sans dépendance. */

:root {
  --ink: #14213d;
  --muted: #44506a;
  --bg: #f2f5fb;
  --paper: #ffffff;
  --line: #cfd7e6;

  --blue: #1d4ed8;
  --blue-soft: #e7eeff;
  --green: #15803d;
  --green-soft: #e5f5ea;
  --orange: #c2410c;
  --orange-d: #9a3412;
  --orange-soft: #fff0e3;
  --red: #b91c1c;
  --red-soft: #fdeaea;

  --radius: 14px;
  --shadow: 4px 4px 0 var(--ink);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-head: ui-rounded, "SF Pro Rounded", "Trebuchet MS", "Segoe UI", system-ui, sans-serif;
}

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

html { -webkit-text-size-adjust: 100%; scroll-padding-top: 90px; }

body {
  margin: 0;
  font: 1.125rem/1.55 var(--font);
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img, svg { max-width: 100%; }

a { color: var(--blue); text-underline-offset: 3px; }

:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 3px;
  border-radius: 6px;
}

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

.skip {
  position: absolute; left: 12px; top: -80px; z-index: 100;
  background: var(--ink); color: #fff; padding: 12px 18px; border-radius: 10px; font-weight: 700;
}
.skip:focus { top: 12px; }

.wrap { width: 100%; max-width: 1040px; margin: 0 auto; padding: 0 20px; }
.main { flex: 1; padding-top: 12px; padding-bottom: 56px; outline: none; overflow-x: clip; }

/* ---------- Titres ---------- */
.h1, .h2, .hero__title, .cahier__title, .unit__name, .course__title {
  font-family: var(--font-head);
  letter-spacing: -0.01em;
  line-height: 1.15;
}
.h1 { font-size: clamp(1.7rem, 5.5vw, 2.5rem); font-weight: 800; margin: 8px 0 6px; }
.h2 { font-size: clamp(1.3rem, 4vw, 1.7rem); font-weight: 800; margin: 28px 0 14px; }
.lead { font-size: 1.2rem; color: var(--muted); margin: 0 0 8px; }
.page-head { margin: 4px 0 18px; }
.empty {
  background: var(--paper); border: 2px dashed var(--ink); border-radius: var(--radius);
  padding: 22px; color: var(--muted); margin: 16px 0;
}

/* ---------- En-tête ---------- */
.site-header {
  position: sticky; top: 0; z-index: 30;
  background: var(--paper); border-bottom: 2px solid var(--ink);
}
.site-header__row { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 66px; }

.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font: 800 1.45rem var(--font-head); color: var(--ink); text-decoration: none;
  min-height: 48px;
}
.brand__mark { width: 40px; height: 40px; flex: none; }

.nav-desktop { display: none; gap: 6px; }
.nav-desktop a, .nav-mobile__panel a {
  display: inline-flex; align-items: center; min-height: 48px; padding: 0 14px;
  color: var(--ink); font-weight: 700; text-decoration: none; border-radius: 10px;
  border: 2px solid transparent;
}
.nav-desktop a:hover, .nav-mobile__panel a:hover { background: var(--blue-soft); }
.nav-desktop a[aria-current="page"], .nav-mobile__panel a[aria-current="page"] {
  border-color: var(--ink); background: var(--orange-soft);
  text-decoration: underline; text-decoration-thickness: 3px; text-underline-offset: 6px;
}

.nav-mobile summary {
  list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: 8px;
  min-height: 48px; padding: 0 16px; font-weight: 800;
  border: 2px solid var(--ink); border-radius: 12px; background: var(--paper); box-shadow: 3px 3px 0 var(--ink);
}
.nav-mobile summary::-webkit-details-marker { display: none; }
.nav-mobile[open] summary { background: var(--orange-soft); }
.nav-mobile__panel {
  position: absolute; left: 0; right: 0; top: 100%;
  background: var(--paper); border-bottom: 2px solid var(--ink);
  padding: 12px 20px 18px; display: grid; gap: 8px;
}
.nav-mobile__panel a { width: 100%; }

@media (min-width: 900px) {
  .nav-desktop { display: flex; }
  .nav-mobile { display: none; }
}

/* ---------- Pied de page ---------- */
.site-footer { border-top: 2px solid var(--ink); background: var(--paper); margin-top: auto; }
.site-footer__row { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; padding-top: 18px; padding-bottom: 18px; font-size: 1rem; }
.site-footer p { margin: 0; }

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 52px; padding: 10px 20px; text-align: center;
  font: 700 1.05rem/1.2 var(--font); text-decoration: none; cursor: pointer;
  color: var(--ink); background: var(--paper);
  border: 2px solid var(--ink); border-radius: 12px; box-shadow: 3px 3px 0 var(--ink);
  transition: transform .08s ease, box-shadow .08s ease;
}
.btn:hover { transform: translate(1px, 1px); box-shadow: 2px 2px 0 var(--ink); }
.btn:active { transform: translate(3px, 3px); box-shadow: none; }
.btn--course { background: var(--blue); color: #fff; }
.btn--exo { background: var(--green); color: #fff; }
.btn--cta { background: var(--orange); color: #fff; }
.btn--cta:hover { background: var(--orange-d); }
.btn--ghost { background: var(--paper); color: var(--ink); }
.btn--danger { background: var(--red); color: #fff; }
.btn--small { min-height: 44px; padding: 6px 14px; font-size: 1rem; }
.btn--disabled { opacity: .55; box-shadow: none; cursor: not-allowed; text-decoration: line-through; }
.btn--disabled:hover { transform: none; box-shadow: none; }
button.btn { font-family: var(--font); }

/* ---------- Fil d'Ariane / Retour ---------- */
.pagebar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; margin: 14px 0 10px; }
.crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 2px 0; font-size: 1rem; }
.crumbs li { display: inline-flex; align-items: center; }
.crumbs li + li::before { content: "›"; margin: 0 8px; color: var(--muted); font-weight: 700; }
.crumbs a { color: var(--blue); font-weight: 600; }
.crumbs [aria-current] { font-weight: 800; }

/* ---------- Cartes ---------- */
.card {
  background: var(--paper); border: 2px solid var(--ink);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px;
}
.grid { display: grid; gap: 22px; grid-template-columns: 1fr; list-style: none; margin: 0; padding: 0; }
@media (min-width: 640px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .grid.units { grid-template-columns: repeat(4, 1fr); } }

/* ---------- Accueil : le cahier ---------- */
.hero {
  margin: 14px calc(50% - 50vw) 0;
  padding: 36px 0 30px;
  border-bottom: 2px solid var(--ink);
  background-color: #fbfcff;
  /* papier Seyès : réglure horizontale + carreaux + marge rouge */
  background-image:
    linear-gradient(90deg, transparent 17px, #e08a9b 17px, #e08a9b 19px, transparent 19px),
    repeating-linear-gradient(90deg, transparent 0 31px, #e3eaf8 31px 32px),
    repeating-linear-gradient(0deg, transparent 0 31px, #c5d4f2 31px 32px);
}
.hero__title, .hero__tagline { max-width: 1040px; margin-left: auto; margin-right: auto; padding: 0 20px 0 40px; }
.hero__title { font-size: clamp(2.6rem, 11vw, 4.6rem); font-weight: 900; margin-top: 0; margin-bottom: 8px; }
.hero__tagline { font-size: clamp(1.1rem, 4vw, 1.5rem); font-weight: 700; margin-top: 0; margin-bottom: 0; color: var(--muted); }
@media (min-width: 640px) { .hero__title, .hero__tagline { padding-left: 60px; } }

.home-levels .h2 { margin-top: 32px; }
.levels { display: grid; gap: 28px; grid-template-columns: 1fr; }
@media (min-width: 760px) { .levels { grid-template-columns: 1fr 1fr; gap: 36px; } }

.cahier {
  --cover: var(--blue);
  position: relative; display: grid; grid-template-columns: 52px 1fr;
  background: var(--paper); border: 2px solid var(--ink); border-radius: 18px;
  box-shadow: 7px 7px 0 var(--ink); overflow: hidden;
}
.cahier--navy { --cover: #1e2f5a; }
.cahier__spine {
  background-color: var(--cover);
  border-right: 2px solid var(--ink);
  background-image: radial-gradient(circle at 50% 28px, #fff 0 8px, var(--ink) 8px 10px, transparent 10.5px);
  background-size: 100% 56px;
  background-repeat: repeat-y;
}
.cahier__body { padding: 22px 20px 22px; display: flex; flex-direction: column; align-items: flex-start; gap: 4px; }
.cahier__icon { font-size: 2.6rem; line-height: 1; margin: 0 0 4px; }
.cahier__title { font-size: clamp(1.6rem, 6vw, 2rem); font-weight: 900; margin: 0; }
.cahier__text { margin: 4px 0 0; font-size: 1.1rem; }
.cahier__meta { margin: 2px 0 14px; color: var(--muted); font-size: 1rem; }
.cahier__link { align-self: stretch; }
/* Toute la carte est cliquable via le bouton */
.cahier__link::after { content: ""; position: absolute; inset: 0; }
.cahier:focus-within { outline: 3px solid var(--ink); outline-offset: 4px; }
.cahier__link:focus-visible { outline: none; }

.home-search { margin-top: 44px; }

/* ---------- Unités / modules ---------- */
.unit { display: flex; flex-direction: column; gap: 4px; position: relative; }
.unit__name { font-size: 1.7rem; font-weight: 900; margin: 0; }
.unit__subtitle { margin: 0; font-weight: 700; }
.unit__count { margin: 0 0 12px; color: var(--muted); }
.unit__link { margin-top: auto; }
.unit__link::after { content: ""; position: absolute; inset: 0; }
.unit:focus-within { outline: 3px solid var(--ink); outline-offset: 4px; }
.unit__link:focus-visible { outline: none; }

/* ---------- Liste des cours / exercices ---------- */
.courses { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; }
.course { display: grid; gap: 16px; }
.course--off { background: repeating-linear-gradient(135deg, #fff 0 12px, #f4f4f4 12px 24px); border-style: dashed; }
.course__title { font-size: 1.3rem; font-weight: 800; margin: 0 0 6px; display: flex; flex-wrap: wrap; gap: 4px 12px; align-items: baseline; }
.course__num {
  display: inline-block; padding: 2px 12px; border: 2px solid var(--ink); border-radius: 10px;
  background: var(--blue-soft); font-size: .95em; white-space: nowrap;
}
.course__num--exo { background: var(--green-soft); }
.course__desc { margin: 0; color: var(--muted); }
.course__actions { display: grid; gap: 12px; grid-template-columns: 1fr; }
@media (min-width: 520px) { .course__actions { grid-template-columns: 1fr 1fr; } }
@media (min-width: 900px) {
  .course { grid-template-columns: 1fr auto; align-items: center; }
  .course__actions { grid-template-columns: auto auto; }
}

.badge {
  display: inline-block; margin: 6px 8px 0 0; padding: 2px 12px; font-size: .95rem; font-weight: 700;
  border: 2px solid var(--ink); border-radius: 999px; background: var(--paper);
}
.badge--off { background: var(--orange-soft); }

/* ---------- Page cours ---------- */
.actions-bar { display: flex; flex-wrap: wrap; gap: 12px; margin: 6px 0 18px; }
.frame {
  display: block; width: 100%; min-height: 70vh; background: #fff;
  border: 2px solid var(--ink); border-radius: var(--radius); box-shadow: var(--shadow);
}
.frame--pdf { height: 80vh; }
.course-nav { display: grid; gap: 12px; grid-template-columns: 1fr; margin-top: 28px; }
@media (min-width: 640px) { .course-nav { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .course-nav { grid-template-columns: repeat(4, 1fr); } }

/* ---------- Recherche ---------- */
.search__label { display: block; font-weight: 800; margin-bottom: 8px; }
.search__row { display: flex; flex-wrap: wrap; gap: 12px; }
.search__field { position: relative; flex: 1 1 260px; }
.search__list {
  position: absolute; z-index: 20; left: 0; right: 0; top: calc(100% + 6px);
  list-style: none; margin: 0; padding: 6px; background: var(--paper);
  border: 2px solid var(--ink); border-radius: var(--radius); box-shadow: var(--shadow);
}
.search__list[hidden] { display: none; }
.search__list a {
  display: block; padding: 10px 12px; border-radius: 10px; color: var(--ink); text-decoration: none; font-weight: 700;
}
.search__list a:hover, .search__list a:focus-visible { background: var(--blue-soft); }
.search__list small { display: block; color: var(--muted); font-weight: 400; }
.search__status { margin: 6px 0 0; min-height: 1.4em; color: var(--muted); font-size: 1rem; }

.result-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.result { padding: 0; }
.result__link { display: grid; gap: 2px; padding: 16px 20px; color: var(--ink); text-decoration: none; border-radius: var(--radius); }
.result__link:hover { background: var(--blue-soft); }
.result__kind { font-weight: 800; font-size: .95rem; }
.result__kind--exercice { color: var(--green); }
.result__kind--cours { color: var(--blue); }
.result__title { font-weight: 800; font-size: 1.15rem; text-decoration: underline; text-underline-offset: 3px; }
.result__context { color: var(--muted); font-size: 1rem; }

/* ---------- Formulaires ---------- */
.input, select.input, textarea.input {
  display: block; width: 100%; min-height: 52px; padding: 10px 14px;
  font: 1.05rem var(--font); color: var(--ink); background: var(--paper);
  border: 2px solid var(--ink); border-radius: 12px;
}
textarea.input { min-height: 96px; resize: vertical; }
input[type="file"].input { padding: 12px 14px; }
.input:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; }

.field { margin: 0 0 20px; }
.field > label, .field > .label { display: block; font-weight: 800; margin-bottom: 6px; }
.field .hint { margin: 6px 0 0; font-size: 1rem; color: var(--muted); }
.check { display: flex; align-items: center; gap: 12px; min-height: 48px; font-weight: 700; }
.check input { width: 26px; height: 26px; accent-color: var(--blue); }
.form-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }

.alert {
  border: 2px solid var(--ink); border-radius: 12px; padding: 12px 16px; margin: 0 0 18px; font-weight: 600;
}
.alert--ok { background: var(--green-soft); }
.alert--err { background: var(--red-soft); }
.alert--info { background: var(--blue-soft); }
.alert ul { margin: 6px 0 0; padding-left: 22px; font-weight: 500; }

/* ---------- Espace professeur ---------- */
.admin-bar { background: var(--ink); color: #fff; }
.admin-bar__row { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; padding-top: 10px; padding-bottom: 10px; }
.admin-bar .brand { color: #fff; font-size: 1.2rem; }
.admin-bar .brand__mark { width: 34px; height: 34px; }
.admin-nav { display: flex; flex-wrap: wrap; gap: 4px; flex: 1; }
.admin-nav a, .admin-bar button.linklike {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 12px;
  color: #fff; font: 700 1rem var(--font); text-decoration: none; border-radius: 10px;
  background: none; border: 2px solid transparent; cursor: pointer;
}
.admin-nav a:hover, .admin-bar button.linklike:hover { background: rgba(255, 255, 255, .15); }
.admin-nav a[aria-current="page"] { border-color: #fff; text-decoration: underline; text-underline-offset: 5px; }
.admin-bar :focus-visible { outline-color: #fff; }
.admin-bar form { margin: 0; }

.stats { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); margin: 12px 0 24px; }
.stat { text-align: left; }
.stat__label { margin: 0; font-weight: 700; color: var(--muted); }
.stat__value { margin: 0; font: 900 2.6rem/1.1 var(--font-head); }
.stat__sub { margin: 0; color: var(--muted); font-size: 1rem; }

.table-wrap { overflow-x: auto; border: 2px solid var(--ink); border-radius: var(--radius); background: var(--paper); box-shadow: var(--shadow); }
table.table { width: 100%; border-collapse: collapse; font-size: 1rem; min-width: 760px; }
.table th, .table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.table th { background: var(--blue-soft); font-weight: 800; border-bottom: 2px solid var(--ink); white-space: nowrap; }
.table tr:last-child td { border-bottom: 0; }
.table .row-off td { background: #f6f6f6; color: var(--muted); }
.table .actions { display: flex; flex-wrap: wrap; gap: 8px; }
.table form { display: inline; margin: 0; }
.table .num { white-space: nowrap; font-weight: 800; }

.filters { display: grid; gap: 12px; grid-template-columns: 1fr; margin: 0 0 18px; }
@media (min-width: 760px) { .filters { grid-template-columns: repeat(4, 1fr) auto; align-items: end; } }
.filters .field { margin: 0; }

.card-form { max-width: 720px; }
.two-col { display: grid; gap: 0 20px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .two-col { grid-template-columns: 1fr 1fr; } }

.login-box { max-width: 460px; margin: 32px auto; }
.import-row-conflict td { background: var(--orange-soft); }
.small { font-size: .95rem; color: var(--muted); }

/* ---------- Mouvement réduit ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}

@media print {
  .site-header, .site-footer, .pagebar, .course-nav, .actions-bar { display: none; }
  .frame { box-shadow: none; }
}