/* Interface des cours et lecteur PDF */
.course-hero{position:relative;isolation:isolate;display:grid;grid-template-columns:minmax(0,1fr) 220px;align-items:center;gap:44px;margin-bottom:30px;padding:42px;overflow:hidden;border-radius:28px;color:#fff;background:linear-gradient(130deg,var(--course-color,#2878b5),#173f5f 72%);box-shadow:0 24px 60px #173f5f2e}
.course-hero:before{content:"";position:absolute;z-index:-1;inset:0;background:radial-gradient(circle at 78% 20%,#ffffff26 0 2px,transparent 3px) 0 0/28px 28px,linear-gradient(115deg,transparent 35%,#ffffff12)}
.course-hero h1{max-width:780px;margin:12px 0 10px;font-size:clamp(32px,5vw,56px);line-height:1.03;color:#fff}.course-hero p{max-width:720px;margin:0;color:#e9f6ff;line-height:1.75}.course-hero .eyebrow{color:#fff}
.back-link{display:inline-flex;margin-bottom:24px;color:#fff;font-weight:800}.course-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.course-meta span{padding:8px 13px;border:1px solid #ffffff38;border-radius:999px;background:#ffffff17;font-size:12px;font-weight:800}
.course-orb{width:190px;aspect-ratio:1;display:grid;place-content:center;text-align:center;border:1px solid #ffffff50;border-radius:50%;background:linear-gradient(145deg,#ffffff35,#ffffff0c);box-shadow:inset 0 0 40px #ffffff19,0 24px 55px #071c2f38;transform:rotate(5deg)}.course-orb strong{font:900 46px ui-monospace,monospace}.course-orb small{letter-spacing:.22em;font-weight:900}
.lesson{position:relative;grid-template-columns:64px minmax(0,1fr) auto;align-items:start;gap:24px;padding:26px;overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}.lesson:hover{transform:translateY(-2px);border-color:#b9dbe5;box-shadow:0 18px 42px #173f5f14}.lesson:before{content:"";position:absolute;inset:0 auto 0 0;width:5px;background:var(--course-color,var(--teal))}
.lesson-number{display:grid;place-items:center;width:54px;height:54px;border-radius:17px;color:var(--navy);background:linear-gradient(145deg,#e4f5f4,#f2fbfb);font:900 18px ui-monospace,monospace}.lesson-main{min-width:0}.lesson-heading{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:7px}.lesson h2{margin:0;font-size:clamp(20px,2.4vw,27px)}.lesson-content{max-width:850px}.resource-chip{display:inline-flex;align-items:center;padding:5px 9px;border-radius:999px;color:#825b00;background:#fff4d6;font-size:11px;font-weight:850}
.lesson-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.lesson-actions .button,.lesson-actions button{margin:0}.complete-form{align-self:center;min-width:175px}.complete-form button{width:100%}.complete-mark{display:grid;place-items:center;width:45px;height:45px;margin-top:4px;border-radius:50%;color:#fff;background:var(--teal);font-size:22px;font-weight:900;box-shadow:0 10px 24px #22a7a044}.lesson.is-complete{background:linear-gradient(90deg,#f4fbfa,#fff 32%)}
.resource-dialog{width:min(1100px,calc(100% - 28px));height:min(88vh,850px);max-width:none;max-height:none;padding:0;overflow:hidden;border:0;border-radius:24px;background:#fff;box-shadow:0 30px 100px #071c2f66}.resource-dialog::backdrop{background:#0b2436cc;backdrop-filter:blur(7px)}.resource-dialog[open]{display:grid;grid-template-rows:auto minmax(0,1fr) auto}.resource-dialog header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 22px;border-bottom:1px solid var(--line);background:#fff}.resource-dialog header h2{margin:2px 0 0;font-size:20px}.dialog-close{display:grid;place-items:center;width:42px;height:42px;padding:0;border-radius:50%;font-size:25px}.resource-viewer{min-height:0;background:#dfe7eb}.resource-viewer iframe{display:block;width:100%;height:100%;border:0;background:#fff}.document-fallback{display:grid;place-content:center;height:100%;padding:40px;text-align:center;color:var(--navy)}.document-fallback strong{font-size:22px}.document-fallback p{color:var(--muted)}.resource-dialog footer{display:flex;justify-content:flex-end;padding:13px 22px;border-top:1px solid var(--line);background:#fff}.resource-dialog footer .button{margin:0}
@media(max-width:800px){.course-hero{grid-template-columns:1fr;padding:30px}.course-orb{display:none}.lesson{grid-template-columns:48px minmax(0,1fr)}.lesson-number{width:44px;height:44px}.complete-form,.complete-mark{grid-column:2}.complete-form{width:100%}.resource-dialog{height:92vh}}
@media(max-width:540px){.course-hero{margin-inline:-4px;padding:25px 21px;border-radius:22px}.course-hero h1{font-size:34px}.course-meta{align-items:flex-start;flex-direction:column}.lesson{grid-template-columns:1fr;padding:21px}.lesson-number{width:40px;height:40px}.lesson-main,.complete-form,.complete-mark{grid-column:1}.complete-mark{margin-left:auto}.lesson-actions{align-items:stretch;flex-direction:column}.lesson-actions .button,.lesson-actions button{width:100%;text-align:center}.resource-dialog{width:100%;height:100%;border-radius:0}.resource-dialog header{padding:14px}.resource-dialog footer{justify-content:stretch;padding:10px}.resource-dialog footer .button{width:100%;text-align:center}}

/* Étudiants et promotions */
.students-space{margin:28px 0;padding:30px;border:1px solid #dce9ef;border-radius:25px;background:linear-gradient(145deg,#f8fcfd,#eef7f8);box-shadow:0 18px 50px #173f5f10}.protected-heading,.section-title{display:flex;align-items:center;justify-content:space-between;gap:20px}.protected-heading h2{margin:5px 0;font-size:30px}.protected-heading p,.section-title p{margin:0;color:var(--muted)}.protected-lock{display:grid;place-items:center;width:48px;height:48px;border-radius:15px;color:#fff;background:linear-gradient(145deg,var(--navy),var(--teal));box-shadow:0 10px 25px #173f5f28}.promotion-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:25px 0}.promotion-stats article{display:grid;gap:4px;padding:21px;border:1px solid #dce9ef;border-radius:18px;background:#fff}.promotion-stats strong{color:var(--navy);font-size:27px}.promotion-stats span{color:var(--muted);font-size:13px;font-weight:750}.student-directory{margin:0}.student-table .tr{grid-template-columns:1fr 1.4fr 1fr .6fr}.student-empty{display:grid;justify-items:center;gap:8px;padding:54px 20px;text-align:center;color:var(--muted)}.student-empty span{font-size:42px;color:var(--teal)}.student-empty strong{font-size:18px;color:var(--navy)}.student-empty p{margin:0}
@media(max-width:800px){.promotion-stats{grid-template-columns:1fr}.students-space{padding:21px}.section-title{align-items:flex-start;flex-direction:column}.student-table{overflow:auto}.student-table .tr{min-width:650px}}
.student-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px;margin-top:24px}.student-card{display:grid;grid-template-columns:50px minmax(0,1fr);gap:15px;padding:18px;border:1px solid #dce9ef;border-radius:18px;background:#fff;transition:transform .2s ease,box-shadow .2s ease}.student-card:hover{transform:translateY(-2px);box-shadow:0 14px 35px #173f5f12}.student-avatar{display:grid;place-items:center;width:50px;height:50px;border-radius:16px;color:#fff;background:linear-gradient(145deg,var(--blue),var(--teal));font-size:20px;font-weight:900}.student-info{min-width:0}.student-name{display:flex;align-items:center;justify-content:space-between;gap:10px}.student-name strong{font-size:17px}.student-info>a:not(.linkedin-link){display:block;margin:3px 0 13px;overflow:hidden;color:var(--muted);text-overflow:ellipsis}.student-details{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.student-details span{display:grid;gap:2px;font-size:12px;color:var(--navy)}.student-details small{color:var(--muted);font-size:10px;font-weight:800;text-transform:uppercase}.linkedin-link{display:inline-flex;margin-top:14px;font-size:12px;font-weight:850;color:#0967c2}
@media(max-width:900px){.student-cards{grid-template-columns:1fr}}@media(max-width:540px){.student-card{grid-template-columns:1fr}.student-details{grid-template-columns:1fr 1fr}.student-name{align-items:flex-start;flex-direction:column}}
.profile-editor{margin-top:13px;padding-top:12px;border-top:1px solid #e6eef2}.profile-editor summary{cursor:pointer;color:var(--blue);font-size:12px;font-weight:850}.profile-editor form{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}.profile-editor label{font-size:11px}.profile-editor input{padding:10px}.profile-editor button{grid-column:1/-1;margin:0}@media(max-width:540px){.profile-editor form{grid-template-columns:1fr}}
.alumni-stats{grid-template-columns:repeat(4,1fr)}.alumni-tools{display:grid;grid-template-columns:1.2fr .8fr;gap:30px}.alumni-tools h2{margin-top:0}.muted{color:var(--muted)}.alumni-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.alumni-card{display:grid;gap:18px}.alumni-card-head{display:grid;grid-template-columns:50px minmax(0,1fr) auto;align-items:center;gap:14px}.alumni-card-head h2{margin:3px 0;font-size:21px}.verify-badge{padding:6px 9px;border-radius:999px;font-size:10px;font-weight:900}.verify-badge.verified{color:#14766f;background:#def5f1}.verify-badge.pending{color:#8a6000;background:#fff1c9}.alumni-current{display:grid;gap:4px;padding:15px;border-radius:15px;background:#f4f9fb}.alumni-current span{color:var(--muted);font-size:13px}.alumni-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.alumni-meta span{display:grid;font-size:12px}.alumni-meta small{color:var(--muted);font-size:9px;font-weight:850;text-transform:uppercase}.alumni-actions{display:grid;gap:12px}.alumni-actions details{padding-top:10px;border-top:1px solid var(--line)}.alumni-actions summary{cursor:pointer;color:var(--blue);font-weight:850}.alumni-actions form{margin-top:15px}
@media(max-width:900px){.alumni-grid,.alumni-tools{grid-template-columns:1fr}.alumni-stats{grid-template-columns:1fr 1fr}}@media(max-width:540px){.alumni-card-head{grid-template-columns:50px 1fr}.verify-badge{grid-column:1/-1;width:max-content}.alumni-meta{grid-template-columns:1fr 1fr}.alumni-stats{grid-template-columns:1fr}}
.alumni-create{margin-bottom:20px}.alumni-create>summary{cursor:pointer;color:var(--navy);font-size:18px;font-weight:900}.alumni-create[open]>summary{margin-bottom:20px}.delete-alumni{display:flex;justify-content:flex-end;padding-top:12px;border-top:1px solid #f3dddd}.delete-alumni .danger{margin:0;color:#a52b2b;border:1px solid #e9bcbc;background:#fff5f5}.delete-alumni .danger:hover{color:#fff;background:#b93434}
.course-status{display:flex;align-items:center;justify-content:space-between;gap:10px;color:var(--muted);font-size:11px;font-weight:800}.course-teacher{margin:7px 0 13px;color:var(--muted)}.topic-tags{display:flex;flex-wrap:wrap;gap:6px;min-height:28px;margin:10px 0 14px}.topic-tags span{padding:6px 9px;border:1px solid #dbe9ef;border-radius:999px;color:var(--navy);background:#f5fafb;font-size:10px;font-weight:800}.mastery-project{margin:10px 0;color:#8a6500;font-size:11px;font-weight:850}.courses-table .tr{grid-template-columns:.38fr 1.45fr .9fr 1.35fr .42fr .58fr 1fr;min-width:1160px}.course-topics{color:var(--muted);font-size:12px;line-height:1.5}.course-admin-actions{display:grid;align-self:start;gap:7px}.course-admin-actions details{position:relative}.course-admin-actions summary{width:max-content;cursor:pointer;color:var(--blue);font-size:11px;font-weight:850}.course-edit-form{position:absolute;z-index:20;right:0;width:360px;display:grid;gap:10px;margin-top:8px;padding:16px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:0 18px 45px #173f5f24}.course-edit-form label{font-size:11px}.course-edit-form input,.course-edit-form select,.course-edit-form textarea{padding:9px}.preview-link{display:inline-flex;width:max-content;padding:7px 10px;border:1px solid #cfe1ed;border-radius:8px;color:var(--blue);background:#f4f9fc;font-size:11px;font-weight:800;line-height:1.25;white-space:nowrap}.preview-link:hover{border-color:var(--blue);background:#eaf4fa}.preview-notice{display:inline-flex;margin:0 0 15px;padding:7px 11px;border:1px solid #ffffff50;border-radius:999px;background:#ffffff1f;color:#fff;font-size:11px;font-weight:850}.admin-lesson-status{align-self:center}@media(max-width:700px){.course-edit-form{position:fixed;inset:90px 14px auto;width:auto;max-height:calc(100vh - 120px);overflow:auto}}