:root {
  --ink: #17221d;
  --ink-soft: #52605a;
  --forest: #14261f;
  --forest-2: #234338;
  --sage: #dce9df;
  --sage-deep: #8db09a;
  --cream: #f6f3eb;
  --paper: #fffdf8;
  --copper: #d67549;
  --copper-soft: #f4ded2;
  --blue: #5f7f91;
  --blue-soft: #dfe9ee;
  --rose-soft: #f0dedd;
  --sand: #ece1c7;
  --line: #dedfd8;
  --shadow: 0 14px 40px rgba(20, 38, 31, 0.09);
  --sidebar: 245px;
  font-family: "DM Sans", system-ui, sans-serif;
  color: var(--ink);
  background: var(--cream);
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; min-height: 100vh; background: var(--cream); }
button, input, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }
svg { flex: 0 0 auto; }

.skip-link { position: fixed; top: 8px; left: 8px; z-index: 100; padding: 9px 13px; background: white; border-radius: 8px; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.app-shell { min-height: 100vh; }
.sidebar { position: fixed; inset: 0 auto 0 0; z-index: 20; width: var(--sidebar); display: flex; flex-direction: column; padding: 28px 18px 22px; color: #f9fbf9; background: var(--forest); }
.brand { display: flex; align-items: center; gap: 11px; padding: 2px 7px 29px; }
.brand-mark { display: grid; place-items: center; width: 39px; height: 39px; font: 800 18px/1 "Manrope", sans-serif; color: var(--forest); background: #f4c59f; border-radius: 11px 11px 4px 11px; letter-spacing: -3px; }
.brand-mark span { color: var(--copper); }
.brand-copy { display: flex; flex-direction: column; }
.brand-copy strong { font: 700 18px/1.1 "Manrope", sans-serif; letter-spacing: -0.5px; }
.brand-copy small { margin-top: 4px; color: #a6b8af; font-size: 10px; letter-spacing: .08em; text-transform: uppercase; }
.side-nav { display: grid; gap: 7px; }
.nav-link { display: flex; align-items: center; gap: 13px; min-height: 47px; padding: 0 14px; color: #b9c8c1; border-radius: 10px; font-weight: 600; transition: .2s ease; }
.nav-link:hover { color: white; background: rgba(255,255,255,.07); }
.nav-link.active { color: white; background: #2f4f43; box-shadow: inset 3px 0 var(--copper); }
.nav-link.active svg { color: #f6b994; }
.sidebar-card { margin-top: auto; padding: 18px; color: #ccdad4; background: #1e352c; border: 1px solid #345247; border-radius: 14px; }
.sidebar-card svg { margin-bottom: 12px; color: #f0a77f; }
.sidebar-card strong { display: block; color: white; font-size: 13px; }
.sidebar-card p { margin: 8px 0 12px; color: #9db1a8; font-size: 12px; line-height: 1.5; }
.sidebar-card span { font-size: 10px; color: #789188; text-transform: uppercase; letter-spacing: .12em; }
.user-card { display: grid; grid-template-columns: 38px 1fr; align-items: center; gap: 11px; }
.user-card .user-avatar { display: grid; place-items: center; width: 38px; height: 38px; color: var(--forest); background: #f4c59f; border-radius: 50%; font: 800 15px/1 "Manrope", sans-serif; letter-spacing: 0; }
.user-card div { min-width: 0; }
.user-card strong { overflow: hidden; text-overflow: ellipsis; }
.user-card div span { display: block; margin-top: 3px; }
.logout-button { grid-column: 1 / -1; width: 100%; margin-top: 3px; padding: 9px 10px; color: #cad8d1; background: transparent; border: 1px solid #456257; border-radius: 8px; font-size: 11px; font-weight: 700; cursor: pointer; }
.logout-button:hover { color: white; background: rgba(255,255,255,.07); }

.auth-page { min-height: 100vh; display: grid; place-items: center; padding: 28px 16px; background: radial-gradient(circle at 80% 10%, rgba(214,117,73,.16), transparent 30%), var(--forest); }
.auth-card { width: min(440px, 100%); padding: clamp(25px, 5vw, 38px); background: var(--paper); border: 1px solid rgba(255,255,255,.25); border-radius: 22px 22px 7px 22px; box-shadow: 0 24px 70px rgba(7,17,13,.3); }
.auth-brand { display: inline-flex; align-items: center; gap: 11px; margin-bottom: 37px; }
.auth-brand .brand-copy strong { color: var(--forest); }
.auth-brand .brand-copy small { color: #75847c; }
.auth-heading h1 { margin: 6px 0 10px; font: 800 34px/1.12 "Manrope", sans-serif; letter-spacing: -1.3px; }
.auth-heading > p:last-child { margin: 0 0 25px; color: var(--ink-soft); line-height: 1.55; }
.auth-form { display: grid; gap: 17px; }
.auth-form label { display: grid; gap: 7px; color: var(--ink-soft); font-size: 12px; font-weight: 700; }
.auth-form input { width: 100%; min-height: 47px; padding: 11px 13px; color: var(--ink); background: white; border: 1px solid #cfd3cc; border-radius: 9px; outline: 0; }
.auth-form input:focus { border-color: var(--sage-deep); box-shadow: 0 0 0 3px rgba(141,176,154,.25); }
.auth-form .button { margin-top: 3px; }
.auth-form .button:disabled { cursor: wait; opacity: .72; }
.field-help { margin: -7px 0 0; color: #718078; font-size: 11px; line-height: 1.5; }
.auth-error { margin: 0 0 18px; padding: 11px 13px; color: #8c392e; background: #fae7e3; border: 1px solid #efc9c1; border-radius: 8px; font-size: 12px; line-height: 1.45; }
.auth-loading { display: flex; align-items: center; justify-content: center; gap: 12px; min-height: 130px; color: var(--ink-soft); }
.auth-spinner { width: 21px; height: 21px; border: 2px solid var(--sage); border-top-color: var(--copper); border-radius: 50%; animation: auth-spin .7s linear infinite; }
@keyframes auth-spin { to { transform: rotate(360deg); } }

.main-content { min-height: 100vh; margin-left: var(--sidebar); padding: 46px clamp(28px, 5vw, 76px) 70px; outline: none; }
.mobile-nav { display: none; }
.page-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 28px; max-width: 1280px; margin: 0 auto 38px; }
.page-header h1 { max-width: 820px; margin: 5px 0 12px; font: 800 clamp(32px, 4vw, 52px)/1.06 "Manrope", sans-serif; letter-spacing: -2.4px; }
.page-header h1 em { color: var(--copper); font-family: Georgia, serif; font-weight: 400; }
.page-header .header-lead { max-width: 620px; margin: 0; color: var(--ink-soft); font-size: 16px; line-height: 1.65; }
.eyebrow { margin: 0; color: var(--copper); font-size: 11px; font-weight: 800; letter-spacing: .14em; }
.date-chip, .result-count { flex: 0 0 auto; padding: 10px 14px; color: var(--ink-soft); background: rgba(255,255,255,.55); border: 1px solid var(--line); border-radius: 999px; font-size: 13px; text-transform: capitalize; }
.result-count strong { margin-right: 4px; color: var(--ink); }

.hero-search { position: relative; max-width: 1280px; margin: 0 auto 47px; padding: clamp(28px, 5vw, 52px); overflow: hidden; color: white; background: var(--forest); border-radius: 22px 22px 7px 22px; box-shadow: var(--shadow); }
.hero-search::after { content: ""; position: absolute; right: -70px; top: -80px; width: 300px; height: 300px; border: 1px solid rgba(255,255,255,.1); border-radius: 50%; box-shadow: 0 0 0 45px rgba(255,255,255,.025), 0 0 0 90px rgba(255,255,255,.02); }
.hero-search > * { position: relative; z-index: 1; }
.hero-kicker { display: inline-flex; align-items: center; gap: 7px; margin-bottom: 12px; color: #f3b691; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; }
.hero-search h2 { max-width: 650px; margin: 0 0 26px; font: 700 clamp(24px, 3vw, 36px)/1.2 "Manrope", sans-serif; letter-spacing: -1px; }
.search-box { display: flex; align-items: center; gap: 11px; width: min(720px, 100%); padding: 7px 7px 7px 16px; color: var(--ink-soft); background: white; border: 1px solid transparent; border-radius: 12px; }
.search-box:focus-within { border-color: var(--sage-deep); box-shadow: 0 0 0 3px rgba(141,176,154,.25); }
.search-box input { min-width: 0; flex: 1; padding: 8px 0; background: transparent; border: 0; outline: 0; color: var(--ink); }
.search-box button:not(.clear-search) { padding: 11px 18px; color: white; background: var(--copper); border: 0; border-radius: 9px; font-weight: 700; cursor: pointer; }
.quick-categories { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.quick-categories a { display: flex; align-items: center; gap: 7px; padding: 8px 11px; color: #cad8d1; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.11); border-radius: 8px; font-size: 12px; transition: .2s ease; }
.quick-categories a:hover { color: white; background: rgba(255,255,255,.13); }

.dashboard-grid { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 30px; max-width: 1280px; margin: auto; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 20px; }
.section-heading h2 { margin: 4px 0 0; font: 700 24px/1.2 "Manrope", sans-serif; letter-spacing: -.7px; }
.section-heading > a { display: flex; align-items: center; gap: 7px; color: var(--forest-2); font-size: 13px; font-weight: 700; }
.guide-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; max-width: 1280px; margin: auto; }
.guide-grid.compact { grid-template-columns: repeat(3, minmax(210px, 1fr)); }
.guide-card { display: flex; flex-direction: column; min-width: 0; min-height: 255px; padding: 20px; background: var(--paper); border: 1px solid var(--line); border-radius: 16px 16px 5px 16px; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.guide-card:hover { transform: translateY(-3px); border-color: #c9cec6; box-shadow: var(--shadow); }
.guide-card-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.category-pill { display: inline-flex; align-items: center; gap: 6px; width: fit-content; padding: 6px 9px; color: var(--forest-2); background: var(--sage); border-radius: 6px; font-size: 11px; font-weight: 700; }
.category-windows { background: var(--blue-soft); color: #385a6c; }
.category-linux { background: #e8e1d1; color: #625846; }
.category-telephonie { background: #e3e7db; color: #53603b; }
.category-microsoudure { background: var(--copper-soft); color: #8c492d; }
.icon-button { display: inline-grid; place-items: center; width: 35px; height: 35px; padding: 0; color: #708078; background: transparent; border: 0; border-radius: 8px; cursor: pointer; }
.icon-button:hover { background: rgba(20,38,31,.07); color: var(--ink); }
.icon-button.danger:hover { color: #a64238; background: #fae7e5; }
.save-guide.saved { color: var(--copper); }
.save-guide.saved svg { fill: currentColor; }
.card-link { display: block; width: 100%; padding: 0; text-align: left; background: none; border: 0; cursor: pointer; }
.guide-card h3 { margin: 18px 0 9px; font: 700 17px/1.35 "Manrope", sans-serif; letter-spacing: -.35px; }
.guide-card p { margin: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.55; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card-meta { display: flex; align-items: center; gap: 7px; margin-top: auto; padding-top: 18px; color: #758079; font-size: 11px; }
.card-meta span { display: flex; align-items: center; gap: 5px; }
.level-dot { width: 6px; height: 6px; margin-left: 3px; background: var(--sage-deep); border-radius: 50%; }
.level-avancé { background: var(--copper); }
.read-link { display: flex; align-items: center; gap: 5px; margin-left: auto; padding: 0; color: var(--forest-2); background: none; border: 0; font-size: 11px; font-weight: 800; cursor: pointer; }
.progress-panel { align-self: start; padding: 26px; text-align: center; color: white; background: var(--forest-2); border-radius: 18px 18px 6px 18px; }
.progress-panel .eyebrow { color: #efb18d; }
.progress-panel h2 { margin: 6px 0 24px; font: 700 20px/1.2 "Manrope", sans-serif; }
.progress-ring { display: grid; place-items: center; width: 132px; height: 132px; margin: auto; border-radius: 50%; background: conic-gradient(var(--copper) var(--progress), rgba(255,255,255,.12) 0); }
.progress-ring::before { content: ""; grid-area: 1/1; width: 106px; height: 106px; background: var(--forest-2); border-radius: 50%; }
.progress-ring span { z-index: 1; grid-area: 1/1; display: flex; flex-direction: column; }
.progress-ring strong { font: 800 26px/1 "Manrope", sans-serif; }
.progress-ring small { margin-top: 6px; color: #acc1b7; }
.progress-panel > p:not(.eyebrow) { color: #b9cbc3; font-size: 12px; }

.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 43px; padding: 0 17px; border: 1px solid transparent; border-radius: 9px; font-weight: 700; font-size: 13px; cursor: pointer; }
.button.primary { color: white; background: var(--copper); }
.button.primary:hover { background: #bf6039; }
.button.secondary { color: var(--forest); background: white; border-color: var(--line); }
.button.ghost { background: transparent; border-color: var(--line); }
.button.full { width: 100%; }
.progress-panel .button.secondary { margin-top: 15px; }

.library-tools { max-width: 1280px; margin: 0 auto 28px; }
.search-box.standalone { width: 100%; border-color: var(--line); }
.clear-search { display: grid; place-items: center; width: 32px; height: 32px; padding: 0; color: var(--ink-soft); background: #f1f2ee; border: 0; border-radius: 7px; cursor: pointer; }
.filter-chips { display: flex; gap: 8px; margin-top: 15px; overflow-x: auto; padding-bottom: 3px; scrollbar-width: thin; }
.filter-chip { display: flex; align-items: center; gap: 6px; flex: 0 0 auto; padding: 9px 13px; color: var(--ink-soft); background: transparent; border: 1px solid #d5d7d0; border-radius: 999px; font-size: 12px; font-weight: 600; cursor: pointer; }
.filter-chip:hover, .filter-chip.active { color: white; background: var(--forest-2); border-color: var(--forest-2); }
.empty-state { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 330px; max-width: 1280px; margin: auto; padding: 40px; text-align: center; color: var(--ink-soft); background: rgba(255,255,255,.45); border: 1px dashed #cbd0c8; border-radius: 16px; }
.empty-state > svg { color: var(--copper); }
.empty-state h1, .empty-state h2 { margin: 15px 0 7px; color: var(--ink); font-family: "Manrope", sans-serif; }
.empty-state p { margin: 0 0 20px; }
.page-not-found { margin-top: 10vh; }

.back-link { display: inline-flex; align-items: center; gap: 7px; margin: 0 0 25px; padding: 0; color: var(--ink-soft); background: none; border: 0; font-size: 13px; font-weight: 700; cursor: pointer; }
.detail-page, .course-detail, .lesson-page { max-width: 1120px; margin: auto; }
.detail-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 30px; padding: clamp(26px, 4vw, 45px); color: white; background: var(--forest); border-radius: 20px 20px 6px 20px; }
.detail-header .category-pill { margin-bottom: 17px; }
.detail-header h1 { max-width: 760px; margin: 0 0 12px; font: 800 clamp(30px, 4vw, 48px)/1.1 "Manrope", sans-serif; letter-spacing: -2px; }
.detail-header p { max-width: 710px; margin: 0; color: #bfd0c8; line-height: 1.65; }
.detail-meta { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 24px; color: #a9bdb4; font-size: 12px; }
.detail-meta span { display: flex; align-items: center; gap: 6px; }
.detail-header .button { flex: 0 0 auto; }
.detail-layout { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 24px; margin-top: 25px; }
.prerequisite-card, .steps-card { padding: 25px; background: var(--paper); border: 1px solid var(--line); border-radius: 14px; }
.prerequisite-card { align-self: start; }
.prerequisite-card h2, .steps-card h2 { margin: 0 0 19px; font: 700 19px/1.3 "Manrope", sans-serif; }
.prerequisite-card ul { display: grid; gap: 13px; margin: 0; padding: 0; list-style: none; }
.prerequisite-card li { display: flex; align-items: flex-start; gap: 8px; color: var(--ink-soft); font-size: 13px; line-height: 1.45; }
.prerequisite-card li svg { margin-top: 2px; color: #568168; }
.steps-list { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; counter-reset: steps; }
.steps-list li { display: grid; grid-template-columns: 34px 1fr; gap: 14px; position: relative; padding-bottom: 24px; }
.steps-list li:not(:last-child)::after { content: ""; position: absolute; top: 34px; left: 16px; bottom: 0; width: 1px; background: var(--line); }
.steps-list li > span { display: grid; place-items: center; z-index: 1; width: 34px; height: 34px; color: white; background: var(--forest-2); border-radius: 50%; font-size: 12px; font-weight: 800; }
.steps-list p { margin: 6px 0 0; color: var(--ink-soft); line-height: 1.55; }
.caution { padding: 17px 19px; background: #fbede4; border-left: 3px solid var(--copper); border-radius: 3px 8px 8px 3px; }
.caution strong { color: #8d4a2e; font-size: 13px; }
.caution p { margin: 5px 0 0; color: #755b4f; font-size: 13px; line-height: 1.5; }

.course-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; max-width: 1280px; margin: auto; }
.course-card { display: flex; flex-direction: column; overflow: hidden; background: var(--paper); border: 1px solid var(--line); border-radius: 18px 18px 6px 18px; box-shadow: 0 5px 18px rgba(20,38,31,.04); }
.course-visual { display: flex; align-items: flex-start; justify-content: space-between; min-height: 125px; padding: 25px; color: var(--forest); background: var(--copper-soft); }
.course-visual > span { display: grid; place-items: center; width: 58px; height: 58px; background: rgba(255,255,255,.62); border-radius: 14px; }
.course-visual small { padding: 6px 9px; background: rgba(255,255,255,.65); border-radius: 999px; font-weight: 700; }
.accent-blue .course-visual { background: var(--blue-soft); }
.accent-green .course-visual { background: var(--sage); }
.course-body { display: flex; flex: 1; flex-direction: column; padding: 23px; }
.course-meta { display: flex; gap: 12px; color: #7b847f; font-size: 10px; text-transform: uppercase; letter-spacing: .05em; }
.course-body h2 { margin: 13px 0 9px; font: 700 20px/1.3 "Manrope", sans-serif; letter-spacing: -.5px; }
.course-body > p { margin: 0 0 22px; color: var(--ink-soft); font-size: 13px; line-height: 1.6; }
.course-progress { display: flex; align-items: center; gap: 10px; margin-top: auto; margin-bottom: 15px; }
.course-progress > div { flex: 1; height: 6px; overflow: hidden; background: #e6e7e2; border-radius: 10px; }
.course-progress > div span { display: block; height: 100%; background: var(--copper); border-radius: inherit; }
.course-progress small { color: var(--ink-soft); font-size: 11px; font-weight: 700; }
.course-detail-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; padding: clamp(28px, 5vw, 52px); background: var(--copper-soft); border-radius: 21px 21px 6px 21px; }
.course-detail-header.accent-blue { background: var(--blue-soft); }
.course-detail-header.accent-green { background: var(--sage); }
.course-detail-header h1 { max-width: 750px; margin: 7px 0 13px; font: 800 clamp(30px, 4vw, 48px)/1.08 "Manrope", sans-serif; letter-spacing: -2px; }
.course-detail-header p:not(.eyebrow) { max-width: 680px; margin: 0; color: var(--ink-soft); line-height: 1.6; }
.course-score { display: flex; flex-direction: column; align-items: flex-end; flex: 0 0 auto; }
.course-score strong { font: 800 37px/1 "Manrope", sans-serif; }
.course-score span { margin-top: 6px; color: var(--ink-soft); font-size: 11px; }
.curriculum { margin-top: 34px; }
.chapter-card { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 25px; margin-bottom: 14px; padding: 20px; background: var(--paper); border: 1px solid var(--line); border-radius: 13px; }
.chapter-heading { display: flex; gap: 15px; padding: 11px; }
.chapter-heading > span { color: #b9beb8; font: 800 31px/1 "Manrope", sans-serif; }
.chapter-heading small { color: var(--copper); font-size: 9px; font-weight: 800; letter-spacing: .12em; }
.chapter-heading h3 { margin: 5px 0 0; font: 700 17px/1.3 "Manrope", sans-serif; }
.lesson-list { display: grid; }
.lesson-row { display: grid; grid-template-columns: 32px 1fr 18px; align-items: center; gap: 11px; width: 100%; padding: 11px; text-align: left; background: transparent; border: 0; border-bottom: 1px solid #ebebe7; cursor: pointer; }
.lesson-row:last-child { border-bottom: 0; }
.lesson-row:hover { background: #f7f6f1; }
.lesson-status { display: grid; place-items: center; width: 29px; height: 29px; color: var(--ink-soft); background: #e9ebe7; border-radius: 50%; }
.lesson-status.done { color: white; background: #5f8a70; }
.lesson-row > span:nth-child(2) { display: flex; flex-direction: column; }
.lesson-row strong { font-size: 13px; }
.lesson-row small { margin-top: 3px; color: #8a928e; font-size: 10px; }
.lesson-row > svg { color: #9ba29e; }
.lesson-layout { display: grid; grid-template-columns: 330px minmax(0, 1fr); min-height: 550px; overflow: hidden; background: var(--paper); border: 1px solid var(--line); border-radius: 18px 18px 6px 18px; }
.lesson-aside { padding: 42px 32px; color: white; background: var(--forest); }
.lesson-aside h1 { margin: 23px 0 18px; font: 700 31px/1.2 "Manrope", sans-serif; letter-spacing: -1px; }
.lesson-aside > p { display: flex; align-items: center; gap: 7px; color: #aebfb7; font-size: 13px; }
.lesson-content { padding: clamp(36px, 6vw, 70px); }
.lesson-content h2 { margin: 7px 0 24px; font: 700 26px/1.2 "Manrope", sans-serif; }
.lesson-lead { color: var(--ink-soft); font-size: 18px; line-height: 1.75; }
.lesson-example { margin: 34px 0; padding: 22px; background: var(--sage); border-radius: 10px; }
.lesson-example strong { color: var(--forest-2); }
.lesson-example p { margin: 7px 0 0; color: #496057; line-height: 1.55; }

.notes-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; max-width: 1280px; margin: auto; }
.note-card { position: relative; display: flex; flex-direction: column; min-height: 245px; padding: 22px; background: var(--sage); border-radius: 5px 17px 17px 17px; }
.note-card::before { content: ""; position: absolute; top: 0; left: 0; border-style: solid; border-width: 16px 16px 0 0; border-color: var(--cream) transparent transparent transparent; }
.note-sand { background: var(--sand); }
.note-blue { background: var(--blue-soft); }
.note-rose { background: var(--rose-soft); }
.note-actions { display: flex; justify-content: flex-end; }
.note-content { flex: 1; padding: 0; text-align: left; background: transparent; border: 0; cursor: pointer; }
.note-content h2 { margin: 8px 0 13px; font: 700 18px/1.35 "Manrope", sans-serif; }
.note-content p { margin: 0; color: #4b5d55; font-size: 13px; line-height: 1.65; }
.note-card > small { margin-top: 20px; color: #718077; font-size: 10px; }
.note-dialog { width: min(560px, calc(100% - 28px)); padding: 0; color: var(--ink); background: var(--paper); border: 0; border-radius: 17px; box-shadow: 0 25px 80px rgba(12,24,19,.28); }
.note-dialog::backdrop { background: rgba(12,24,19,.62); backdrop-filter: blur(3px); }
.note-dialog form { display: grid; gap: 18px; padding: 27px; }
.dialog-heading { display: flex; align-items: flex-start; justify-content: space-between; }
.dialog-heading h2 { margin: 4px 0 0; font: 700 23px/1.2 "Manrope", sans-serif; }
.note-dialog label:not(.color-dot) { display: grid; gap: 7px; color: var(--ink-soft); font-size: 12px; font-weight: 700; }
.note-dialog input[type="text"], .note-dialog input[name="title"], .note-dialog textarea { width: 100%; padding: 12px 13px; color: var(--ink); background: white; border: 1px solid #cfd3cc; border-radius: 8px; outline: 0; resize: vertical; }
.note-dialog input:focus, .note-dialog textarea:focus { border-color: var(--sage-deep); box-shadow: 0 0 0 3px rgba(141,176,154,.25); }
.note-dialog fieldset { padding: 0; border: 0; }
.note-dialog legend { margin-bottom: 8px; color: var(--ink-soft); font-size: 12px; font-weight: 700; }
.color-options { display: flex; gap: 9px; }
.color-dot { cursor: pointer; }
.color-dot input { position: absolute; opacity: 0; }
.color-dot span { display: block; width: 29px; height: 29px; background: var(--sage); border: 2px solid white; border-radius: 50%; box-shadow: 0 0 0 1px var(--line); }
.color-dot input:checked + span { box-shadow: 0 0 0 2px var(--forest-2); }
.color-sand span { background: var(--sand); }
.color-blue span { background: var(--blue-soft); }
.color-rose span { background: var(--rose-soft); }
.dialog-actions { display: flex; justify-content: flex-end; gap: 9px; margin-top: 5px; }

.toast-region { position: fixed; z-index: 200; right: 22px; bottom: 22px; display: grid; gap: 8px; }
.toast { padding: 12px 16px; color: white; background: var(--forest); border: 1px solid #375449; border-radius: 9px; box-shadow: var(--shadow); opacity: 0; transform: translateY(10px); transition: .22s ease; font-size: 13px; }
.toast.visible { opacity: 1; transform: translateY(0); }

/* Administration des thèmes */
.theme-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; max-width: 1080px; margin: auto; }
.theme-option { overflow: hidden; background: var(--paper); border: 1px solid var(--line); border-radius: 16px 16px 5px 16px; transition: border-color .2s ease, box-shadow .2s ease; }
.theme-option.active { border-color: var(--copper); box-shadow: 0 0 0 2px rgba(214,117,73,.12); }
.theme-preview { position: relative; height: 220px; overflow: hidden; background: #f6f3eb; border-bottom: 1px solid var(--line); }
.theme-preview span { position: absolute; display: block; }
.preview-sidebar { inset: 0 auto 0 0; width: 26%; background: #14261f; }
.preview-heading { top: 26px; left: 32%; width: 42%; height: 15px; background: #26362f; border-radius: 5px; }
.preview-card { top: 67px; width: 28%; height: 112px; background: #fffdf8; border: 1px solid #d8dad4; box-shadow: 0 8px 18px rgba(20,38,31,.07); }
.preview-card-a { left: 32%; border-radius: 12px 12px 4px 12px; }
.preview-card-b { left: 64%; border-radius: 12px 12px 4px 12px; }
.preview-accent { left: 35%; bottom: 54px; width: 20%; height: 7px; background: var(--copper); border-radius: 5px; }
.preview-atelier-lineaire { background-color: #f1f0e9; background-image: linear-gradient(rgba(20,38,31,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(20,38,31,.035) 1px, transparent 1px); background-size: 24px 24px; }
.preview-atelier-lineaire .preview-sidebar { border-right: 3px solid #d67549; }
.preview-atelier-lineaire .preview-heading, .preview-atelier-lineaire .preview-card, .preview-atelier-lineaire .preview-accent { border-radius: 1px; box-shadow: none; }
.preview-atelier-lineaire .preview-card { border-color: #aeb8b1; }
.theme-option-body { padding: 25px; }
.theme-number { color: var(--copper); font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.theme-title-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin: 7px 0 11px; }
.theme-title-row h2 { margin: 0; font: 700 22px/1.25 "Manrope", sans-serif; }
.active-theme-badge { flex: 0 0 auto; padding: 5px 8px; color: #315643; background: var(--sage); border-radius: 999px; font-size: 10px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.theme-option-body > p { min-height: 63px; margin: 0 0 22px; color: var(--ink-soft); font-size: 13px; line-height: 1.6; }
.theme-option .button:disabled { cursor: default; opacity: .72; }
.admin-error { max-width: 1080px; margin: -15px auto 24px; padding: 12px 14px; color: #8c392e; background: #fae7e3; border: 1px solid #efc9c1; }

/* Thème 2 — Atelier linéaire */
:root[data-theme="atelier-lineaire"] {
  --cream: #f0f0e9;
  --paper: #fffefa;
  --line: #cbd1cb;
  --shadow: 0 9px 24px rgba(20,38,31,.055);
}
:root[data-theme="atelier-lineaire"] body {
  background-color: var(--cream);
  background-image: linear-gradient(rgba(20,38,31,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(20,38,31,.025) 1px, transparent 1px);
  background-size: 28px 28px;
}
:root[data-theme="atelier-lineaire"] .sidebar { border-right: 3px solid var(--copper); }
:root[data-theme="atelier-lineaire"] .brand-mark { border-radius: 2px; }
:root[data-theme="atelier-lineaire"] .nav-link,
:root[data-theme="atelier-lineaire"] .sidebar-card,
:root[data-theme="atelier-lineaire"] .logout-button,
:root[data-theme="atelier-lineaire"] .auth-card,
:root[data-theme="atelier-lineaire"] .auth-form input,
:root[data-theme="atelier-lineaire"] .auth-error,
:root[data-theme="atelier-lineaire"] .hero-search,
:root[data-theme="atelier-lineaire"] .search-box,
:root[data-theme="atelier-lineaire"] .search-box button:not(.clear-search),
:root[data-theme="atelier-lineaire"] .quick-categories a,
:root[data-theme="atelier-lineaire"] .guide-card,
:root[data-theme="atelier-lineaire"] .category-pill,
:root[data-theme="atelier-lineaire"] .icon-button,
:root[data-theme="atelier-lineaire"] .progress-panel,
:root[data-theme="atelier-lineaire"] .button,
:root[data-theme="atelier-lineaire"] .clear-search,
:root[data-theme="atelier-lineaire"] .filter-chip,
:root[data-theme="atelier-lineaire"] .empty-state,
:root[data-theme="atelier-lineaire"] .detail-header,
:root[data-theme="atelier-lineaire"] .prerequisite-card,
:root[data-theme="atelier-lineaire"] .steps-card,
:root[data-theme="atelier-lineaire"] .caution,
:root[data-theme="atelier-lineaire"] .course-card,
:root[data-theme="atelier-lineaire"] .course-visual > span,
:root[data-theme="atelier-lineaire"] .course-visual small,
:root[data-theme="atelier-lineaire"] .course-detail-header,
:root[data-theme="atelier-lineaire"] .chapter-card,
:root[data-theme="atelier-lineaire"] .lesson-layout,
:root[data-theme="atelier-lineaire"] .lesson-example,
:root[data-theme="atelier-lineaire"] .note-card,
:root[data-theme="atelier-lineaire"] .note-dialog,
:root[data-theme="atelier-lineaire"] .note-dialog input,
:root[data-theme="atelier-lineaire"] .note-dialog textarea,
:root[data-theme="atelier-lineaire"] .toast,
:root[data-theme="atelier-lineaire"] .theme-option,
:root[data-theme="atelier-lineaire"] .active-theme-badge { border-radius: 2px; }
:root[data-theme="atelier-lineaire"] .hero-search { border-left: 6px solid var(--copper); box-shadow: none; }
:root[data-theme="atelier-lineaire"] .hero-search::after { right: 35px; top: 0; width: 1px; height: 100%; border: 0; border-left: 1px solid rgba(255,255,255,.12); border-radius: 0; box-shadow: 18px 0 0 rgba(255,255,255,.06), 36px 0 0 rgba(255,255,255,.03); }
:root[data-theme="atelier-lineaire"] .guide-card,
:root[data-theme="atelier-lineaire"] .course-card,
:root[data-theme="atelier-lineaire"] .chapter-card,
:root[data-theme="atelier-lineaire"] .theme-option { box-shadow: none; border-top: 2px solid var(--forest-2); }
:root[data-theme="atelier-lineaire"] .guide-card:hover { transform: translateY(-2px); border-color: var(--forest-2); box-shadow: none; }
:root[data-theme="atelier-lineaire"] .category-pill,
:root[data-theme="atelier-lineaire"] .filter-chip,
:root[data-theme="atelier-lineaire"] .course-visual small,
:root[data-theme="atelier-lineaire"] .active-theme-badge { text-transform: uppercase; letter-spacing: .05em; }
:root[data-theme="atelier-lineaire"] .date-chip,
:root[data-theme="atelier-lineaire"] .result-count { border-radius: 2px; background: rgba(255,255,255,.78); }
:root[data-theme="atelier-lineaire"] .note-card::before { display: none; }
:root[data-theme="atelier-lineaire"] .mobile-nav { border-radius: 3px; border-bottom: 3px solid var(--copper); }

@media (max-width: 1120px) {
  .guide-grid, .course-grid, .notes-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .guide-grid.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .guide-grid.compact .guide-card:last-child { display: none; }
  .chapter-card { grid-template-columns: 220px minmax(0, 1fr); }
  .theme-grid { grid-template-columns: 1fr; }
}

@media (max-width: 850px) {
  :root { --sidebar: 0px; }
  .sidebar { display: none; }
  .main-content { margin-left: 0; padding: 30px 22px 104px; }
  .mobile-nav { position: fixed; z-index: 30; inset: auto 12px 12px; display: grid; grid-template-columns: repeat(var(--nav-count, 4), 1fr); padding: 7px; background: rgba(20,38,31,.96); border: 1px solid #31493f; border-radius: 16px; box-shadow: 0 10px 35px rgba(12,24,19,.28); backdrop-filter: blur(8px); }
  .mobile-nav .nav-link { flex-direction: column; justify-content: center; gap: 3px; min-height: 51px; padding: 4px; font-size: 10px; }
  .mobile-nav .nav-link.active { box-shadow: none; background: #355246; }
  .dashboard-grid { grid-template-columns: 1fr; }
  .progress-panel { display: grid; grid-template-columns: 1fr 110px; column-gap: 16px; text-align: left; }
  .progress-panel .progress-ring { grid-row: 1 / 5; grid-column: 2; width: 100px; height: 100px; }
  .progress-ring::before { width: 79px; height: 79px; }
  .progress-panel .button { width: fit-content; }
  .detail-layout { grid-template-columns: 1fr; }
  .prerequisite-card { order: 2; }
  .course-grid { grid-template-columns: 1fr; }
  .chapter-card { grid-template-columns: 1fr; gap: 8px; }
  .lesson-layout { grid-template-columns: 1fr; }
  .lesson-aside { padding: 30px; }
}

@media (max-width: 600px) {
  .main-content { padding: 25px 15px 98px; }
  .page-header { align-items: flex-start; margin-bottom: 27px; }
  .page-header h1 { font-size: 35px; letter-spacing: -1.7px; }
  .date-chip, .result-count { display: none; }
  .notes-header { display: grid; }
  .notes-header .button { width: 100%; }
  .hero-search { margin-bottom: 35px; padding: 27px 20px; border-radius: 17px 17px 6px 17px; }
  .hero-search h2 { font-size: 25px; }
  .hero-search .search-box { display: grid; grid-template-columns: 20px 1fr; padding: 11px 13px; }
  .hero-search .search-box button { grid-column: 1 / -1; width: 100%; }
  .quick-categories { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 4px; }
  .guide-grid, .guide-grid.compact, .notes-grid { grid-template-columns: 1fr; }
  .guide-grid.compact .guide-card:last-child { display: flex; }
  .section-heading { align-items: flex-start; }
  .section-heading > a { font-size: 0; }
  .section-heading > a svg { width: 21px; height: 21px; }
  .guide-card { min-height: 230px; }
  .progress-panel { grid-template-columns: 1fr 90px; padding: 22px; }
  .progress-panel .progress-ring { width: 84px; height: 84px; }
  .progress-ring::before { width: 67px; height: 67px; }
  .progress-ring strong { font-size: 19px; }
  .progress-ring small { font-size: 9px; }
  .filter-chips { margin-right: -15px; padding-right: 15px; }
  .detail-header { display: grid; padding: 25px 20px; }
  .detail-header h1 { font-size: 33px; letter-spacing: -1.5px; }
  .detail-header .button { width: 100%; }
  .detail-meta { gap: 10px; }
  .detail-layout { gap: 14px; }
  .steps-card, .prerequisite-card { padding: 20px; }
  .course-detail-header { display: grid; padding: 28px 21px; }
  .course-detail-header h1 { font-size: 32px; letter-spacing: -1.5px; }
  .course-score { align-items: flex-start; }
  .chapter-card { padding: 12px; }
  .lesson-layout { min-height: auto; }
  .lesson-aside h1 { font-size: 27px; }
  .lesson-content { padding: 30px 23px; }
  .lesson-lead { font-size: 16px; }
  .note-dialog form { padding: 22px 18px; }
  .dialog-actions .button { flex: 1; }
  .toast-region { right: 14px; bottom: 84px; left: 14px; }
}

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