/* ============================================================
   THE I'M METHOD — Aula Virtual (v3 · editorial premium)
   Estética: seria, elegante, cálida, sobria. Sin colores saturados.
   Referencias visuales: Notion, Substack, Masterclass, Domestika.
   ============================================================ */
:root{
    --a-bg:#faf7f2;           /* fondo cálido muy claro */
    --a-bg-2:#f2ede4;
    --a-surface:#ffffff;
    --a-ink:#1a1a19;          /* tinta principal (casi negro) */
    --a-ink-2:#4a4a48;
    --a-soft:#8a8783;
    --a-tenue:#b8b5b0;
    --a-line:#e8e3d9;
    --a-line-2:#f0ece3;
    --a-accent:#8f6238;       /* cobre suave — no chillón */
    --a-accent-2:#b07d4f;
    --a-navy:#1a1a19;         /* usar para elementos oscuros */
    --a-ok:#4a6b5c;           /* verde apagado, no fluor */
    --a-warn:#a17439;
    --a-danger:#8b3a2e;
    --a-serif:'Playfair Display',Georgia,serif;
    --a-sans:'Inter',system-ui,sans-serif;
    --a-shadow-sm:0 1px 2px rgba(26,26,25,.04);
    --a-shadow:0 1px 3px rgba(26,26,25,.05), 0 2px 12px rgba(26,26,25,.04);
    --a-shadow-h:0 4px 12px rgba(26,26,25,.08), 0 8px 24px rgba(26,26,25,.06);
    --a-radius:8px;
    --a-radius-lg:12px;
}

body.aula-body{background:var(--a-bg);color:var(--a-ink);font-family:var(--a-sans);font-weight:400;-webkit-font-smoothing:antialiased;letter-spacing:-.005em;}

/* ============ TOPBAR ============ */
.aula-topbar{background:var(--a-surface);border-bottom:1px solid var(--a-line);padding:0 32px;height:64px;
    display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:60;}
.aula-brand{text-decoration:none;display:flex;flex-direction:column;line-height:1;}
.aula-brand-label{font-size:9.5px;letter-spacing:.28em;color:var(--a-accent);text-transform:uppercase;font-weight:600;margin-bottom:3px;}
.aula-brand-title{font-family:var(--a-serif);font-size:19px;color:var(--a-ink);font-weight:600;letter-spacing:-.01em;}
.aula-nav-right{display:flex;align-items:center;gap:16px;}
.aula-user{color:var(--a-ink-2);font-size:13.5px;font-weight:500;}
.aula-logout{color:var(--a-soft);font-size:13px;text-decoration:none;transition:color .2s;letter-spacing:.02em;}
.aula-logout:hover{color:var(--a-ink);}
.aula-bell{position:relative;font-size:15px;text-decoration:none;color:var(--a-ink-2);opacity:.85;padding:6px;}
.aula-bell:hover{opacity:1;color:var(--a-ink);}
.aula-bell-count{position:absolute;top:0;right:0;background:var(--a-danger);color:#fff;font-size:9px;font-weight:600;
    min-width:15px;height:15px;line-height:15px;border-radius:8px;text-align:center;padding:0 4px;}
.aula-avatar{width:34px;height:34px;border-radius:50%;background:var(--a-ink);color:#fff;
    display:flex;align-items:center;justify-content:center;font-weight:500;font-size:13px;font-family:var(--a-serif);letter-spacing:-.01em;}

/* ============ CONTENEDOR ============ */
.aula-container{max-width:1080px;margin:0 auto;padding:44px 32px 100px;}

/* Tipografía */
.aula-h1{font-family:var(--a-serif);font-weight:500;font-size:clamp(28px,3.4vw,36px);color:var(--a-ink);letter-spacing:-.015em;line-height:1.15;margin-bottom:6px;}
.aula-h2{font-family:var(--a-serif);font-weight:500;font-size:20px;color:var(--a-ink);margin:0 0 16px;letter-spacing:-.01em;}
.aula-muted{color:var(--a-soft);font-size:13.5px;}

/* Sección con línea horizontal fina */
.lms-sec{display:flex;align-items:baseline;justify-content:space-between;margin:52px 0 22px;padding-bottom:12px;border-bottom:1px solid var(--a-line);}
.lms-sec h2{font-family:var(--a-serif);font-weight:500;font-size:19px;color:var(--a-ink);margin:0;letter-spacing:-.01em;}
.lms-sec a{font-size:12.5px;color:var(--a-soft);text-decoration:none;letter-spacing:.01em;transition:color .2s;}
.lms-sec a:hover{color:var(--a-ink);}

/* ============ HERO / BIENVENIDA — sobrio ============ */
.lms-hero{background:var(--a-surface);border:1px solid var(--a-line);border-radius:var(--a-radius-lg);
    padding:36px 40px;position:relative;overflow:hidden;}
.lms-hero .eyebrow{font-size:10.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--a-accent);font-weight:600;margin-bottom:10px;}
.lms-hero h1{font-family:var(--a-serif);font-weight:500;font-size:clamp(24px,3vw,32px);line-height:1.15;letter-spacing:-.02em;color:var(--a-ink);margin-bottom:8px;}
.lms-hero p{color:var(--a-ink-2);font-size:14.5px;max-width:520px;line-height:1.65;}
.lms-member{display:inline-flex;align-items:center;gap:6px;margin-top:16px;background:var(--a-bg-2);border:1px solid var(--a-line);
    border-radius:20px;padding:5px 14px;font-size:12px;color:var(--a-ink-2);font-weight:500;}

/* ============ STATS · como Notion callouts ============ */
.lms-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin-top:18px;background:var(--a-line);
    border:1px solid var(--a-line);border-radius:var(--a-radius-lg);overflow:hidden;}
.lms-stat{background:var(--a-surface);padding:22px 24px;position:relative;}
.lms-stat .ic{position:absolute;top:20px;right:20px;font-size:14px;opacity:.35;}
.lms-stat .n{font-family:var(--a-serif);font-size:28px;color:var(--a-ink);line-height:1;font-weight:500;letter-spacing:-.02em;}
.lms-stat .t{font-size:12px;color:var(--a-soft);margin-top:6px;letter-spacing:.01em;}

/* ============ CURSOS · cards editoriales ============ */
.lms-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;}
.course-card{background:var(--a-surface);border:1px solid var(--a-line);border-radius:var(--a-radius-lg);overflow:hidden;
    text-decoration:none;display:flex;flex-direction:column;transition:border-color .25s, transform .25s;}
.course-card:hover{border-color:var(--a-ink);transform:translateY(-2px);text-decoration:none;}
.cc-cover{height:120px;position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden;
    background:var(--a-bg-2);border-bottom:1px solid var(--a-line);}
.cc-cover.v1{background:linear-gradient(135deg,#e8e0d2,#c9bda9);}
.cc-cover.v2{background:linear-gradient(135deg,#d5cebe,#b0a68f);}
.cc-cover.v3{background:linear-gradient(135deg,#e1d8c5,#b8a887);}
.cc-cover.v4{background:linear-gradient(135deg,#d9cfba,#a89578);}
.cc-cover .mono{font-family:var(--a-serif);font-size:52px;color:rgba(26,26,25,.14);font-weight:500;letter-spacing:-.03em;}
.cc-cover .tag{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.85);backdrop-filter:blur(6px);
    color:var(--a-ink);font-size:10px;letter-spacing:.14em;text-transform:uppercase;padding:4px 10px;border-radius:20px;font-weight:500;}
.cc-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.cc-title{font-family:var(--a-serif);font-size:18px;color:var(--a-ink);font-weight:500;line-height:1.3;margin-bottom:6px;letter-spacing:-.01em;}
.cc-desc{font-size:13px;color:var(--a-soft);line-height:1.55;flex:1;}
.cc-foot{margin-top:18px;}
.cc-meta{display:flex;justify-content:space-between;font-size:11px;color:var(--a-soft);margin-bottom:6px;letter-spacing:.02em;}
.cc-meta .pct{color:var(--a-ink);font-weight:600;}

/* Barra de progreso — fina y sobria */
.bar{height:3px;background:var(--a-line);border-radius:2px;overflow:hidden;}
.bar > i{display:block;height:100%;background:var(--a-ink);border-radius:2px;transition:width .5s;}

/* ============ CONTINUAR — banda editorial ============ */
.lms-continue{background:var(--a-surface);border:1px solid var(--a-line);border-radius:var(--a-radius-lg);
    padding:6px;display:flex;gap:0;align-items:stretch;overflow:hidden;transition:border-color .25s;}
.lms-continue:hover{border-color:var(--a-ink);}
.lms-continue .cv{width:130px;background:var(--a-bg-2);border-radius:8px;flex-shrink:0;
    display:flex;align-items:center;justify-content:center;border:1px solid var(--a-line-2);}
.lms-continue .cv .mono{font-family:var(--a-serif);font-size:40px;color:rgba(26,26,25,.2);}
.lms-continue .ci{padding:20px 26px;flex:1;display:flex;flex-direction:column;justify-content:center;}
.lms-continue .ci .k{font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--a-accent);font-weight:600;}
.lms-continue .ci h3{font-family:var(--a-serif);font-size:20px;color:var(--a-ink);margin:6px 0 12px;font-weight:500;letter-spacing:-.01em;}

/* ============ BOTONES · sobrios ============ */
.lms-btn{display:inline-flex;align-items:center;gap:6px;font-family:var(--a-sans);font-size:13px;font-weight:500;
    padding:10px 20px;border-radius:6px;text-decoration:none;border:1px solid transparent;cursor:pointer;
    transition:all .2s;letter-spacing:.005em;}
.lms-btn-primary{background:var(--a-ink);color:#fff;}
.lms-btn-primary:hover{background:var(--a-accent);color:#fff;text-decoration:none;}
.lms-btn-soft{background:var(--a-bg-2);color:var(--a-ink);border-color:var(--a-line);}
.lms-btn-soft:hover{background:var(--a-line);color:var(--a-ink);text-decoration:none;}
.lms-btn-ghost{background:transparent;color:var(--a-ink);border-color:var(--a-line);}
.lms-btn-ghost:hover{border-color:var(--a-ink);color:var(--a-ink);}
.lms-btn.sm{padding:7px 14px;font-size:12px;border-radius:5px;}

/* ============ BADGES · finos ============ */
.lms-badge{display:inline-flex;align-items:center;gap:4px;font-size:10.5px;font-weight:600;padding:3px 9px;border-radius:12px;
    letter-spacing:.03em;text-transform:uppercase;}
.b-done{background:#e8ede8;color:var(--a-ok);}
.b-todo{background:#f5eee0;color:var(--a-warn);}
.b-sent{background:#e8ece8;color:var(--a-ink-2);}
.b-live{background:#f5e6e2;color:var(--a-danger);}

/* ============ COURSE HERO (curso.php) ============ */
.course-hero{background:var(--a-surface);border:1px solid var(--a-line);border-radius:var(--a-radius-lg);
    padding:40px 44px;position:relative;overflow:hidden;}
.course-hero .back{color:var(--a-soft);font-size:12.5px;text-decoration:none;letter-spacing:.01em;transition:color .2s;}
.course-hero .back:hover{color:var(--a-ink);}
.course-hero h1{font-family:var(--a-serif);font-weight:500;font-size:clamp(26px,3.4vw,36px);margin:14px 0 12px;line-height:1.12;color:var(--a-ink);letter-spacing:-.02em;}
.course-hero p{color:var(--a-ink-2);font-size:14.5px;max-width:640px;line-height:1.7;}
.course-hero .hmeta{display:flex;gap:32px;margin-top:24px;flex-wrap:wrap;padding-top:24px;border-top:1px solid var(--a-line);}
.course-hero .hmeta div{font-size:12px;color:var(--a-soft);letter-spacing:.02em;}
.course-hero .hmeta b{font-family:var(--a-serif);font-size:22px;color:var(--a-ink);display:block;font-weight:500;letter-spacing:-.01em;}
.course-hero .hbar{margin-top:22px;max-width:420px;}
.course-hero .hbar span{font-size:11.5px;color:var(--a-soft);margin-top:8px;display:block;letter-spacing:.02em;}

/* Certificado */
.cert-banner{background:var(--a-ink);color:#fff;border-radius:var(--a-radius-lg);padding:20px 28px;margin-top:22px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.cert-banner a{color:var(--a-accent-2);text-decoration:none;font-weight:500;font-size:13px;letter-spacing:.01em;}
.cert-banner a:hover{color:#fff;}

/* ============ CURRÍCULA / MÓDULOS ============ */
.curr{margin-top:24px;}
.mod{background:var(--a-surface);border:1px solid var(--a-line);border-radius:var(--a-radius-lg);
    margin-bottom:10px;overflow:hidden;transition:border-color .2s;}
.mod:hover{border-color:var(--a-tenue);}
.mod[open]{border-color:var(--a-ink);}
.mod > summary{list-style:none;cursor:pointer;padding:20px 26px;display:flex;align-items:center;gap:18px;}
.mod > summary::-webkit-details-marker{display:none;}
.mod .mnum{width:38px;height:38px;border-radius:8px;background:var(--a-bg-2);border:1px solid var(--a-line);color:var(--a-ink);
    font-family:var(--a-serif);font-size:15px;font-weight:500;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.mod.done .mnum{background:var(--a-ink);color:#fff;border-color:var(--a-ink);}
.mod .mhead{flex:1;}
.mod .mhead .mt{font-family:var(--a-serif);font-size:16.5px;color:var(--a-ink);font-weight:500;letter-spacing:-.005em;}
.mod .mhead .ms{font-size:12px;color:var(--a-soft);margin-top:3px;letter-spacing:.01em;}
.mod .chev{color:var(--a-soft);font-size:11px;transition:transform .2s;}
.mod[open] .chev{transform:rotate(180deg);}
.mod .mbody{padding:8px 26px 26px;border-top:1px solid var(--a-line-2);}
.mod .mintro{color:var(--a-ink-2);font-size:14.5px;line-height:1.75;margin:18px 0;}

/* Video */
.aula-video{position:relative;padding-bottom:56.25%;height:0;border-radius:8px;overflow:hidden;margin:16px 0;background:#000;}
.aula-video iframe{position:absolute;inset:0;width:100%;height:100%;}
.vlabel{font-size:12px;font-weight:600;color:var(--a-ink);margin:20px 0 8px;letter-spacing:.02em;}

/* Recursos */
.res-row{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0;}
.res-chip{display:inline-flex;align-items:center;gap:6px;background:var(--a-bg-2);border:1px solid var(--a-line);
    border-radius:6px;padding:9px 14px;font-size:12.5px;color:var(--a-ink);text-decoration:none;transition:border-color .2s;font-weight:500;}
.res-chip:hover{border-color:var(--a-ink);text-decoration:none;}

/* Clase en vivo */
.live-box{background:var(--a-bg-2);border:1px solid var(--a-line);border-left:3px solid var(--a-danger);border-radius:8px;
    padding:14px 18px;margin:16px 0;display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13.5px;color:var(--a-ink-2);}
.live-box strong{color:var(--a-ink);}

/* Tareas */
.task-list{margin:18px 0 8px;}
.task-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 0;
    border-bottom:1px solid var(--a-line-2);text-decoration:none;color:var(--a-ink);transition:padding-left .2s;}
.task-row:last-child{border-bottom:none;}
.task-row:hover{padding-left:6px;color:var(--a-ink);text-decoration:none;}
.task-row .tl{display:flex;align-items:center;gap:10px;font-size:14px;}
.task-row .tl .tic{width:26px;height:26px;border-radius:6px;background:var(--a-bg-2);border:1px solid var(--a-line);
    display:flex;align-items:center;justify-content:center;font-size:12px;}

.mod-complete{margin-top:20px;padding-top:20px;border-top:1px solid var(--a-line-2);}

/* ============ TAREA / EXAMEN ============ */
.lms-quiz{max-width:720px;margin:0 auto;}
.q-card{background:var(--a-surface);border:1px solid var(--a-line);border-radius:var(--a-radius-lg);padding:26px 28px;margin-bottom:14px;}
.q-card .q{font-weight:500;color:var(--a-ink);font-size:15px;margin-bottom:16px;line-height:1.5;}
.opt{display:flex;align-items:center;gap:12px;padding:12px 16px;border:1px solid var(--a-line);border-radius:6px;
    margin-bottom:8px;cursor:pointer;transition:all .18s;font-size:13.5px;color:var(--a-ink);}
.opt:hover{border-color:var(--a-ink);}
.opt.selected{border-color:var(--a-ink);background:var(--a-bg-2);}
.opt input{accent-color:var(--a-ink);width:16px;height:16px;}
.q-result{background:var(--a-surface);border:1px solid var(--a-line);border-radius:var(--a-radius-lg);padding:48px 28px;text-align:center;}
.q-result .big{font-size:38px;opacity:.6;}
.q-grade{font-family:var(--a-serif);font-size:44px;margin:10px 0;font-weight:500;letter-spacing:-.02em;}

/* ============ MENTORÍA · sobria ============ */
.aula-daynav{display:flex;flex-wrap:wrap;gap:6px;margin:24px 0 8px;}
.aula-daychip{background:var(--a-surface);border:1px solid var(--a-line);border-radius:6px;padding:7px 14px;
    font-size:12.5px;font-weight:500;color:var(--a-ink);text-decoration:none;transition:all .18s;letter-spacing:.01em;}
.aula-daychip:hover{border-color:var(--a-ink);text-decoration:none;}
.aula-daychip.active{background:var(--a-ink);color:#fff;border-color:var(--a-ink);}
.aula-daychip.locked{color:var(--a-tenue);background:var(--a-bg-2);cursor:not-allowed;border-style:dashed;}
.aula-block{background:var(--a-surface);border:1px solid var(--a-line);border-radius:var(--a-radius-lg);padding:26px 28px;
    margin-bottom:12px;border-left:3px solid var(--a-accent);}
.aula-block-title{font-family:var(--a-serif);font-size:18px;color:var(--a-ink);font-weight:500;margin-bottom:10px;letter-spacing:-.005em;}
.aula-block-time{font-size:12.5px;color:var(--a-accent);font-weight:500;margin-bottom:10px;letter-spacing:.02em;}
.aula-block-body{color:var(--a-ink-2);line-height:1.8;white-space:pre-wrap;font-size:14.5px;}

/* ============ NOTIFICACIONES ============ */
.aula-notif{display:block;background:var(--a-surface);border:1px solid var(--a-line);border-radius:8px;padding:16px 20px;
    margin-bottom:8px;text-decoration:none;color:var(--a-ink);border-left:3px solid transparent;transition:border-color .2s;}
.aula-notif:hover{border-left-color:var(--a-tenue);text-decoration:none;}
.aula-notif.unread{border-left-color:var(--a-accent);background:var(--a-bg-2);}
.aula-notif strong{color:var(--a-ink);font-family:var(--a-serif);font-size:15px;font-weight:500;}
.aula-notif-date{font-size:11px;color:var(--a-soft);margin-top:4px;letter-spacing:.02em;}

/* ============ EMPTY ============ */
.aula-empty{text-align:center;padding:68px 20px;color:var(--a-soft);background:var(--a-surface);
    border:1px dashed var(--a-line);border-radius:var(--a-radius-lg);}
.aula-empty .ei{font-size:32px;margin-bottom:14px;display:block;opacity:.5;}
.aula-empty p{margin-top:6px;line-height:1.7;font-size:14px;}

/* Videos módulos: más chicos en PC */
@media(min-width:761px){
    .mod .aula-video{max-width:640px;}
}

/* ============ WHATSAPP FLOTANTE · más discreto ============ */
.wa-float{position:fixed;right:24px;bottom:24px;z-index:200;display:flex;align-items:center;gap:0;text-decoration:none;}
.wa-float .wa-ico{position:relative;width:52px;height:52px;border-radius:50%;background:#25D366;color:#fff;
    display:flex;align-items:center;justify-content:center;box-shadow:0 4px 14px rgba(37,211,102,.35);
    transition:transform .2s, box-shadow .2s;}
.wa-float:hover .wa-ico{transform:scale(1.05);box-shadow:0 6px 20px rgba(37,211,102,.45);}
.wa-float .wa-tip{background:var(--a-ink);color:#fff;font-size:12.5px;font-weight:500;white-space:nowrap;
    padding:8px 14px;border-radius:20px;margin-right:10px;opacity:0;transform:translateX(8px);
    transition:opacity .2s, transform .2s;pointer-events:none;letter-spacing:.01em;}
.wa-float:hover .wa-tip{opacity:1;transform:translateX(0);}
.wa-float .wa-ico::after{content:"";position:absolute;inset:0;border-radius:50%;background:#25D366;opacity:.35;
    animation:waPulse 2.4s ease-out infinite;z-index:-1;}
@keyframes waPulse{0%{transform:scale(1);opacity:.35;}70%{transform:scale(1.5);opacity:0;}100%{opacity:0;}}
@media(max-width:760px){
    .wa-float{right:16px;bottom:16px;}
    .wa-float .wa-tip{display:none;}
    .wa-float .wa-ico{width:48px;height:48px;}
    .wa-float .wa-ico::after{width:48px;height:48px;inset:0;}
}

/* ============ PREVIEW BAR (admin viendo) ============ */
.preview-bar{position:sticky;top:64px;z-index:55;background:var(--a-ink);color:#fff;text-align:center;
    font-size:12px;padding:9px 16px;letter-spacing:.02em;}
.preview-bar a{color:var(--a-accent-2);text-decoration:none;font-weight:500;margin-left:10px;}
.preview-bar a:hover{color:#fff;text-decoration:underline;}

/* ============ LOGIN / ACTIVAR · minimalista ============ */
.login-wrap{background:var(--a-bg)!important;}
.login-card{border:1px solid var(--a-line)!important;border-radius:var(--a-radius-lg)!important;
    box-shadow:var(--a-shadow)!important;padding:44px 40px!important;background:var(--a-surface)!important;}
.login-logo .brand{color:var(--a-accent)!important;font-size:10px!important;letter-spacing:.28em!important;font-weight:600!important;}
.login-logo h2{font-family:var(--a-serif)!important;color:var(--a-ink)!important;font-size:26px!important;font-weight:500!important;letter-spacing:-.015em!important;}
.login-card .btn-submit{background:var(--a-ink)!important;border-radius:6px!important;font-weight:500!important;letter-spacing:.01em!important;}
.login-card .btn-submit:hover{background:var(--a-accent)!important;}

/* ============ RESPONSIVE ============ */
@media(max-width:760px){
    .aula-topbar{padding:0 18px;}
    .aula-user{display:none;}
    .aula-container{padding:28px 20px 80px;}
    .lms-hero{padding:28px 24px;}
    .lms-stats{grid-template-columns:1fr;}
    .lms-continue{flex-direction:column;}
    .lms-continue .cv{width:100%;height:100px;}
    .course-hero{padding:28px 24px;}
    .mod > summary{padding:16px 18px;gap:14px;}
    .mod .mbody{padding:4px 18px 22px;}
    .lms-sec{margin:38px 0 18px;}
}