:root{--bg:#f1f8f4;--card:#fff;--text:#111111;--muted:#5f6b63;--primary:#4caf50;--dark:#111111;--line:#dce8df;--ok:#4caf50;--danger:#dc2626}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,Segoe UI,Arial;background:var(--bg);color:var(--text)}
.app{display:flex;min-height:100vh}
.sidebar{width:280px;background:var(--dark);color:white;padding:26px;position:fixed;height:100vh}
.brand{font-size:28px;font-weight:900;margin-bottom:30px}
.brand span{color:#4caf50}
.userbox{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:14px;margin-bottom:20px}
.userbox small{display:block;color:#cbd5e1;margin-top:5px;text-transform:uppercase;letter-spacing:.08em}
.sidebar a{display:block;color:#e5e7eb;text-decoration:none;padding:12px 14px;border-radius:12px;margin:6px 0}
.sidebar a:hover{background:rgba(76,175,80,.25)}
.content{margin-left:280px;padding:28px;width:calc(100% - 280px)}
.top{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}
.top h1{margin:0;font-size:30px}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:0 10px 30px rgba(0,0,0,.06)}
.card h2,.card h3{margin-top:0}
.stat{font-size:36px;font-weight:900}
.muted{color:var(--muted)}
.form{display:grid;gap:12px;max-width:760px}
.form input,.form select,.form textarea{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:12px;background:white;font:inherit}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:#4caf50;box-shadow:0 0 0 3px rgba(76,175,80,.15)}
.form textarea{min-height:130px}
.btn,button{background:var(--primary);color:white;border:0;border-radius:12px;padding:12px 18px;font-weight:800;cursor:pointer;text-decoration:none;display:inline-block}
.btn:hover,button:hover{background:#43a047}
.btn.secondary{background:#111111}
.btn.danger{background:var(--danger)}
table{width:100%;border-collapse:collapse;background:white;border-radius:16px;overflow:hidden}
th,td{text-align:left;padding:14px;border-bottom:1px solid var(--line)}
th{background:#f1f8f4;color:#111111}
.alert{padding:14px 16px;border-radius:14px;margin-bottom:18px;background:#dcfce7;color:#166534}
.alert.err{background:#fee2e2;color:#991b1b}

.login-wrap{
    min-height:100vh;
    display:grid;
    place-items:center;
    padding:20px;
    background:url("/aula/img/im.png") no-repeat center center;
    background-size:cover;
}


.login-card{
    width:100%;
    max-width:430px;
    background:rgba(255,255,255,0.65);
    border-radius:24px;
    padding:30px;
    box-shadow:0 20px 60px rgba(0,0,0,.20);
    border:1px solid rgba(255,255,255,.45);
    backdrop-filter:blur(8px);
}

.login-card h1,
.login-card h2{
    color:#111111;
    margin-top:0;
}

.login-card h1 span,
.login-card h2 span{
    color:#4caf50;
}

.login-card input{
    width:100%;
    padding:15px 16px;
    border:1px solid rgba(0,0,0,.15);
    border-radius:12px;
    background:rgba(255,255,255,.90);
    font:inherit;
    margin-bottom:12px;
}

.login-card input:focus{
    outline:none;
    border-color:#4caf50;
    box-shadow:0 0 0 3px rgba(76,175,80,.15);
}

.login-card button{
    width:100%;
    background:#4caf50;
    color:#fff;
    border:0;
    border-radius:12px;
    padding:14px 18px;
    font-weight:800;
    cursor:pointer;
}

.login-card button:hover{
    background:#43a047;
}


.chat{display:grid;grid-template-columns:280px 1fr;gap:18px}
.chat-list a{display:block;padding:12px;border:1px solid var(--line);border-radius:12px;margin-bottom:8px;text-decoration:none;color:var(--text)}
.message{padding:12px 14px;border-radius:14px;background:#f1f8f4;margin:8px 0;max-width:75%}
.message.me{background:#dcfce7;margin-left:auto}
@media(max-width:900px){.sidebar{position:relative;width:100%;height:auto}.app{display:block}.content{margin:0;width:100%}.grid{grid-template-columns:1fr}.chat{grid-template-columns:1fr}}

.progress-card{display:flex;align-items:center;gap:30px;flex-wrap:wrap}

.progress-circle{
  --progress:5;
  width:180px;
  height:180px;
  border-radius:50%;
  position:relative;
  flex:0 0 auto;
  display:flex;
  align-items:center;
  justify-content:center;
  background:conic-gradient(#4caf50 calc(var(--progress) * 1%), #e5e7eb 0);
  box-shadow:0 12px 30px rgba(76,175,80,.22), inset 0 0 0 1px rgba(76,175,80,.08);
}

.progress-circle:before{
  content:"";
  position:absolute;
  width:130px;
  height:130px;
  border-radius:50%;
  background:white;
  box-shadow:inset 0 0 10px rgba(0,0,0,.03);
}

.progress-circle span{
  position:relative;
  z-index:2;
  text-align:center;
  line-height:1.1;
  font-size:38px;
  font-weight:900;
  color:#111111;
}

.progress-circle span:after{
  content:"Progreso del curso";
  display:block;
  margin-top:8px;
  font-size:12px;
  font-weight:800;
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.05em;
}

.mini-progress{width:70px;height:70px;border-radius:50%;display:grid;place-items:center;background:#dcfce7;color:#166534;font-weight:900;border:1px solid #bbf7d0}
.student-admin{border:1px solid var(--line);border-radius:18px;padding:18px;margin:18px 0;background:#fff}
.student-head{display:flex;justify-content:space-between;gap:15px;align-items:center}
.student-head h3{margin-bottom:4px}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;font-weight:800;font-size:12px}
.badge.pending{background:#fef3c7;color:#92400e}
.badge.approved{background:#dcfce7;color:#166534}
.badge.rejected{background:#fee2e2;color:#991b1b}
.review-form{display:grid;gap:8px;min-width:220px}
.review-form select,.review-form textarea{width:100%;padding:10px;border:1px solid var(--line);border-radius:10px;font:inherit}
.review-form textarea{min-height:70px}
@media(max-width:900px){.progress-card{align-items:flex-start}.student-head{align-items:flex-start}.student-admin table{display:block;overflow-x:auto}}

/* Portadas de cursos */
.course-grid{align-items:stretch}
.course-card{
    min-height:330px;
    border:1px solid var(--line);
    border-radius:20px;
    padding:24px;
    background:#fff;
    background-position:center;
    background-size:cover;
    box-shadow:0 10px 30px rgba(0,0,0,.08);
    display:flex;
    align-items:flex-end;
    overflow:hidden;
}
.course-card-content{width:100%}
.course-card h2{margin:0 0 14px;font-size:26px}
.course-card p{line-height:1.55;margin-bottom:18px}
.course-card.has-cover{color:#fff;border-color:rgba(255,255,255,.18);box-shadow:0 16px 35px rgba(0,0,0,.20)}
.course-card.has-cover p{color:rgba(255,255,255,.92)}
.course-card.has-cover .btn{box-shadow:0 8px 20px rgba(0,0,0,.22)}
.course-hero{
    min-height:210px;
    border:1px solid var(--line);
    border-radius:22px;
    padding:30px;
    display:flex;
    flex-direction:column;
    justify-content:flex-end;
    background:#fff;
    background-position:center;
    background-size:cover;
    box-shadow:0 12px 32px rgba(0,0,0,.08);
}
.course-hero h2{font-size:32px;margin:0 0 10px}
.course-hero p{max-width:800px;margin:0;line-height:1.6}
.course-hero.has-cover{color:#fff;border-color:rgba(255,255,255,.16);text-shadow:0 2px 10px rgba(0,0,0,.35)}
.course-hero.has-cover .btn{text-shadow:none;align-self:flex-start;margin-top:12px}
@media(max-width:900px){
    .course-card{min-height:280px}
    .course-hero{min-height:180px;padding:22px}
    .course-hero h2{font-size:26px}
}

/* Fotos de perfil de usuarios */
.userbox{
    display:flex;
    align-items:center;
    gap:12px;
    min-height:74px;
}
.userbox-info{min-width:0;line-height:1.2}
.userbox-info strong{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.user-avatar{
    width:52px;
    height:52px;
    flex:0 0 52px;
    border-radius:50%;
    object-fit:cover;
    border:3px solid rgba(76,175,80,.85);
    background:#fff;
    box-shadow:0 6px 18px rgba(0,0,0,.22);
}
.user-avatar-fallback{
    display:grid;
    place-items:center;
    background:linear-gradient(135deg,#66d46c,#2e8f38);
    color:#fff;
    font-size:22px;
    font-weight:900;
}
.file-field{display:grid;gap:7px}
.file-field small{color:var(--muted)}
.users-admin-list{display:grid;gap:18px}
.user-admin-card{
    display:grid;
    grid-template-columns:92px minmax(0,1fr) auto;
    gap:18px;
    align-items:start;
    padding:18px;
    border:1px solid var(--line);
    border-radius:18px;
    background:#fafffb;
}
.user-admin-photo-wrap{display:flex;justify-content:center}
.user-admin-photo{
    width:82px;
    height:82px;
    border-radius:50%;
    object-fit:cover;
    border:4px solid #fff;
    box-shadow:0 8px 22px rgba(0,0,0,.14);
}
.user-admin-photo-fallback{
    display:grid;
    place-items:center;
    background:linear-gradient(135deg,#66d46c,#2e8f38);
    color:#fff;
    font-size:30px;
    font-weight:900;
}
.user-edit-form{min-width:0}
.user-edit-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.user-edit-grid label{display:grid;gap:6px;font-size:13px;font-weight:800;color:var(--muted)}
.user-edit-grid input,.user-edit-grid select{
    width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:11px;background:#fff;font:inherit;color:var(--text)
}
.remove-photo-check{display:flex;align-items:center;gap:8px;margin-top:12px;font-size:14px}
.remove-photo-check input{width:auto}
.user-actions{margin-top:14px}
.user-delete-form{align-self:center}
@media(max-width:1100px){
    .user-edit-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:760px){
    .user-admin-card{grid-template-columns:1fr}
    .user-admin-photo-wrap{justify-content:flex-start}
    .user-edit-grid{grid-template-columns:1fr}
    .user-delete-form{align-self:start}
}

/* Directorio administrativo del dashboard */
.admin-stats-grid{grid-template-columns:repeat(4,minmax(0,1fr));margin-bottom:22px}
.admin-directory{margin-top:0}
.directory-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:18px}
.directory-heading h2{margin:0 0 6px}
.directory-filters{display:grid;grid-template-columns:minmax(180px,1fr) minmax(220px,1.4fr) auto auto;gap:12px;align-items:end;padding:16px;background:#f5faf7;border:1px solid var(--line);border-radius:16px}
.directory-filters label{display:grid;gap:7px;font-weight:800;font-size:13px;color:var(--muted)}
.directory-filters select{width:100%;padding:12px;border:1px solid var(--line);border-radius:11px;background:#fff;font:inherit;color:var(--text)}
.directory-results-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:20px 0 14px}
.dashboard-user-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:18px}
.dashboard-user-card{display:flex;flex-direction:column;align-items:center;text-align:center;gap:9px;padding:22px 16px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:0 8px 22px rgba(0,0,0,.06)}
.dashboard-user-card h3{font-size:18px;margin:3px 0 0;word-break:break-word}
.dashboard-user-photo{width:88px;height:88px;border-radius:50%;object-fit:cover;border:4px solid #fff;box-shadow:0 8px 24px rgba(0,0,0,.16)}
.dashboard-user-photo-fallback{display:grid;place-items:center;background:linear-gradient(135deg,#66d46c,#2e8f38);color:#fff;font-size:34px;font-weight:900}
.role-pill{display:inline-flex;padding:6px 11px;border-radius:999px;font-size:12px;font-weight:900;text-transform:uppercase;letter-spacing:.04em}
.role-admin{background:#e0e7ff;color:#3730a3}.role-maestro{background:#dcfce7;color:#166534}.role-alumno{background:#e0f2fe;color:#075985}
.status-text{font-size:12px;font-weight:800}.status-text.is-active{color:#15803d}.status-text.is-inactive{color:#b91c1c}
.empty-state{padding:30px;text-align:center;border:1px dashed var(--line);border-radius:16px;color:var(--muted);background:#fbfdfc}
.user-modal{position:fixed;inset:0;z-index:9999;display:none;align-items:center;justify-content:center;padding:20px}
.user-modal.is-open{display:flex}
.user-modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.58);backdrop-filter:blur(3px)}
.user-modal-dialog{position:relative;width:min(760px,100%);max-height:92vh;overflow:auto;background:#fff;border-radius:22px;padding:26px;box-shadow:0 28px 80px rgba(0,0,0,.34)}
.modal-close{position:absolute;right:14px;top:12px;width:40px;height:40px;padding:0;border-radius:50%;font-size:28px;line-height:1;background:#eef4f0;color:#111}
.modal-user-summary{display:flex;align-items:center;gap:16px;padding-right:42px;margin-bottom:20px}
.modal-user-summary h2{margin:0 0 5px}.modal-user-summary p{margin:0;color:var(--muted)}
.modal-user-photo{width:76px;height:76px;flex:0 0 76px;border-radius:50%;object-fit:cover;border:4px solid #fff;box-shadow:0 7px 20px rgba(0,0,0,.15)}
.modal-form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}
.modal-form-grid label{display:grid;gap:6px;font-weight:800;font-size:13px;color:var(--muted)}
.modal-form-grid input,.modal-form-grid select{width:100%;padding:12px;border:1px solid var(--line);border-radius:11px;background:#fff;font:inherit;color:var(--text)}
.user-course-list{margin:18px 0;padding:14px;border-radius:14px;background:#f5faf7;border:1px solid var(--line)}
.user-course-list p{margin:8px 0 0}.course-chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}.course-chips span{padding:6px 10px;border-radius:999px;background:#dcfce7;color:#166534;font-size:12px;font-weight:800}
.modal-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.modal-delete-form{border-top:1px solid var(--line);margin-top:20px;padding-top:18px}
.self-account-note{margin:18px 0 0;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
body.modal-open{overflow:hidden}
@media(max-width:1050px){.admin-stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.directory-filters{grid-template-columns:1fr 1fr}}
@media(max-width:700px){.directory-heading{flex-direction:column}.directory-filters{grid-template-columns:1fr}.dashboard-user-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.modal-form-grid{grid-template-columns:1fr}.user-modal-dialog{padding:22px 17px}.modal-user-summary{align-items:flex-start}.admin-stats-grid{grid-template-columns:1fr 1fr}}
@media(max-width:440px){.dashboard-user-grid{grid-template-columns:1fr}.admin-stats-grid{grid-template-columns:1fr}}

/* Notas del alumno agrupadas por curso */
.grades-page{display:grid;gap:22px}
.grade-course-card{padding:0;overflow:hidden}
.grade-course-header{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:22px 24px;border-bottom:1px solid var(--line);background:linear-gradient(135deg,#ffffff 0%,#f1f8f4 100%)}
.grade-course-header h2{margin:4px 0 0;font-size:24px;line-height:1.25}
.grade-course-label{display:block;color:#2e7d32;font-size:12px;font-weight:900;letter-spacing:.09em;text-transform:uppercase}
.grade-course-count{flex:0 0 auto;padding:8px 12px;border-radius:999px;background:#dcfce7;color:#166534;font-size:12px;font-weight:900;white-space:nowrap}
.grades-table-wrap{padding:20px;overflow-x:auto}
.grades-table{min-width:680px}
.grades-table th:nth-child(1){width:52%}
.grades-table th:nth-child(2){width:18%}
.grades-table th:nth-child(3){width:30%}
.grades-table tbody tr:last-child td{border-bottom:0}
.grade-assignment-title{font-weight:700;line-height:1.45}
.grade-course-empty{margin:20px;padding:22px;border:1px dashed #b7d9bf;border-radius:16px;background:#f8fcf9;text-align:center}
.grade-course-empty strong{display:block;margin-bottom:7px;font-size:17px}
.grade-course-empty p{margin:0;color:var(--muted);line-height:1.55}
.grades-empty-global{text-align:center;padding:38px 24px}
.grades-empty-global p{margin-bottom:0}

@media(max-width:700px){
    .grade-course-header{align-items:flex-start;padding:19px 18px;flex-direction:column}
    .grade-course-header h2{font-size:21px}
    .grade-course-count{align-self:flex-start}
    .grades-table-wrap{padding:14px}
    .grades-table{min-width:0;border-radius:0;background:transparent}
    .grades-table thead{display:none}
    .grades-table,.grades-table tbody,.grades-table tr,.grades-table td{display:block;width:100%}
    .grades-table tr{margin-bottom:14px;padding:14px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:0 5px 14px rgba(0,0,0,.04)}
    .grades-table tr:last-child{margin-bottom:0}
    .grades-table td{display:grid;grid-template-columns:92px minmax(0,1fr);gap:10px;padding:9px 0;border:0;word-break:break-word}
    .grades-table td:before{content:attr(data-label);font-size:12px;font-weight:900;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
    .grade-course-empty{margin:14px}
}

/* Juega y aprende */
.games-intro{margin-bottom:22px}
.games-intro h2{margin-top:0}
.games-grid .game-card{min-height:280px}
.games-grid .game-card .badge{display:inline-block;margin-bottom:12px}
.games-grid .game-card p{max-width:620px}
@media(max-width:600px){
  .games-grid .game-card{min-height:240px}
  .games-intro{padding:20px}
}





/* =====================================================
   LOGIN RESPONSIVE CON RED NEURONAL
===================================================== */

html,
body{
    margin:0;
    width:100%;
    min-height:100%;
    overflow-x:hidden;
}

.login-wrap{
    position:relative;
    width:100%;
    min-height:100vh;
    min-height:100svh;
    min-height:100dvh;

    display:flex;
    align-items:center;
    justify-content:center;

    padding:20px;
    overflow:hidden;
    isolation:isolate;

    background:url("/aula/img/im.png") no-repeat center center;
    background-size:cover;
}

/* Red neuronal transparente */
#login-neural-network{
    position:absolute;
    top:0;
    left:0;
    width:100%;
    height:100%;
    display:block;
    z-index:1;
    pointer-events:none;
    background:transparent;
}

/* Formulario por encima de la animación */
.login-card{
    position:relative;
    z-index:5;

    width:100%;
    max-width:430px;
    margin:auto;
}

/* Brillo ambiental muy suave */
.login-wrap::after{
    content:"";
    position:absolute;
    inset:0;
    z-index:2;
    pointer-events:none;

    background:
        radial-gradient(
            circle at 15% 20%,
            rgba(0,255,150,.05),
            transparent 35%
        ),
        radial-gradient(
            circle at 85% 75%,
            rgba(150,255,20,.05),
            transparent 40%
        );
}

/* =====================================================
   AJUSTES PARA MÓVIL
===================================================== */

@media(max-width:600px){

    .login-wrap{
        width:100%;
        min-height:100vh;
        min-height:100svh;
        min-height:100dvh;

        display:flex;
        align-items:center;
        justify-content:center;

        padding:
            max(18px, env(safe-area-inset-top))
            18px
            max(18px, env(safe-area-inset-bottom));

        background-position:center center;
    }

    /* ==========================================
       OCULTAR LA RED NEURONAL SOLO EN MÓVIL
    ========================================== */
    #login-neural-network{
        display:none !important;
        visibility:hidden !important;
        opacity:0 !important;
        pointer-events:none !important;
    }

    .login-card{
        position:relative;
        z-index:5;

        width:100%;
        max-width:430px;

        margin:auto;
        padding:26px 22px;
    }

    .login-card .brand{
        font-size:clamp(27px, 8vw, 38px);
        line-height:1.1;
        overflow-wrap:anywhere;
    }
}


@media screen and (max-width:767px){

    .student-dashboard,
    .student-panel,
    .student-hero,
    .dashboard-student-card,
    .dashboard-student,
    .student-welcome-card{
        background-image:none !important;
        background:#ffffff !important;
    }
}