:root{
  --ink:#111111;
  --ink-2:#333333;
  --text-strong:#111111;
  --line:#e3ddd3;
  --line-strong:#d0c9bd;
  --bg:#f6f4f1;
  --surface:#ffffff;
  --yellow:#ffc107;
  --red:#ff3b30;
  --radius:16px;
  --radius-sm:10px;
  --font-title:"Inter",system-ui,sans-serif;
  --ease:cubic-bezier(.16,1,.3,1);
}
/* Dark theme: only the main content area (.app-main) themes — the sidebar
   and auth screens keep their own fixed dark branding regardless. Explicit
   [data-theme] always wins; with no attribute, "Sistema" follows the OS. */
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --ink-2:#c7c7cc; --text-strong:#f5f5f7; --bg:#111113; --surface:#1c1c20;
    --line:rgba(255,255,255,.1); --line-strong:rgba(255,255,255,.2);
  }
}
:root[data-theme="dark"]{
  --ink-2:#c7c7cc; --text-strong:#f5f5f7; --bg:#111113; --surface:#1c1c20;
  --line:rgba(255,255,255,.1); --line-strong:rgba(255,255,255,.2);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font-title);background:var(--bg);color:var(--ink-2);line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:inherit}
button,input,select,textarea{font-family:inherit;font-size:1rem}

/* Auth pages (login/register/setup) --------------------------------------*/
.wrap{min-height:100vh;display:grid;grid-template-columns:1fr 460px;
  background:linear-gradient(180deg,rgba(17,17,17,.78),rgba(17,17,17,.92)),#111111 url("../imagenes/video-cover.jpg") center/cover no-repeat;}
@media (max-width:860px){ .wrap{grid-template-columns:1fr} }
.auth-form-col{display:flex;align-items:center;justify-content:center;padding:32px 20px}
.card{background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--radius);padding:28px;max-width:400px;width:100%}
.auth-card{background:rgba(255,255,255,.14);backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);border:1px solid rgba(255,255,255,.24);box-shadow:0 24px 60px rgba(0,0,0,.35)}
h1{color:var(--text-strong);font-weight:800;font-size:1.4rem;margin-bottom:18px}
.auth-card h1{color:#fff;font-size:1.25rem}
.auth-card p{color:rgba(255,255,255,.78)}
.auth-card .error-msg{margin-bottom:0}
.auth-card-logo-badge{background:#f6f4f1;border-radius:16px;padding:12px 20px;display:flex;justify-content:center;margin:0 auto 20px;max-width:200px}
.auth-card-logo-badge img{width:100%;height:auto;display:block}
.auth-card-subtitle{text-align:center;font-size:.82rem;color:rgba(255,255,255,.6);margin-bottom:24px}
.auth-tabs{display:flex;background:rgba(255,255,255,.06);border-radius:999px;padding:4px;margin-bottom:22px}
.auth-tabs a{flex:1;padding:9px 0;text-align:center;text-decoration:none;color:rgba(255,255,255,.55);font-weight:700;font-size:.85rem;border-radius:999px;transition:background .2s var(--ease),color .2s var(--ease)}
.auth-tabs a.active{background:#fff;color:var(--ink)}
.auth-label-row{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:6px}
.auth-label-row label{margin-bottom:0}
.auth-inline-link{background:none;border:none;color:var(--yellow);font-size:.78rem;font-weight:700;cursor:pointer;font-family:inherit}
.auth-divider{display:flex;align-items:center;gap:12px;margin:18px 0 4px;color:rgba(255,255,255,.4);font-size:.78rem}
.auth-divider::before,.auth-divider::after{content:'';flex:1;height:1px;background:rgba(255,255,255,.12)}
.btn--google{background:#fff;color:var(--ink);border:1px solid rgba(255,255,255,.15)}
.btn--google:hover{background:#f2f2f2}
.btn--google svg{display:block}
.field{margin-top:14px}
.field label{display:block;font-size:.85rem;font-weight:600;color:var(--text-strong);margin-bottom:6px}
.auth-card .field label{color:#fff}
.field input,.field select{width:100%;padding:10px 12px;border:1.5px solid var(--line-strong);border-radius:var(--radius-sm);font-family:inherit;font-size:.92rem}
.auth-card .field input,.auth-card .field select{background:rgba(255,255,255,.92);border-color:rgba(255,255,255,.4);color:var(--ink)}
.auth-card .field input:focus,.auth-card .field select:focus{outline:none;border-color:var(--yellow)}
.auth-card .field input::placeholder{color:rgba(17,17,17,.4)}
.btn{margin-top:20px;display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:12px;border-radius:999px;background:var(--ink);color:#fff;border:none;font-weight:700;font-size:.9rem;cursor:pointer;font-family:inherit;transition:transform .15s var(--ease),box-shadow .15s var(--ease)}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 18px rgba(17,17,17,.2)}
.btn--outline{background:transparent;color:var(--text-strong);border:1.5px solid var(--text-strong)}
.btn--outline:hover{background:var(--ink);color:#fff}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none !important;box-shadow:none !important}
.error-msg{color:var(--red);font-size:.85rem;margin-top:10px}
.alt-link{margin-top:16px;font-size:.85rem;text-align:center}
.alt-link a{color:var(--text-strong);font-weight:600;cursor:pointer}
.auth-card .alt-link a{color:var(--yellow)}

.password-field{position:relative}
.password-field input{padding-right:40px}
.password-toggle{position:absolute;right:4px;top:50%;transform:translateY(-50%);background:transparent;border:none;cursor:pointer;padding:6px 8px;line-height:1;color:var(--ink-2);opacity:.7}
.password-toggle:hover{opacity:1}
.password-toggle svg{display:block}
.auth-card .password-toggle{color:rgba(255,255,255,.6)}

.remember-row{display:flex;align-items:center;gap:8px;margin-top:14px;font-size:.85rem}
.remember-row input{width:auto}
.auth-card .remember-row{color:rgba(255,255,255,.7)}

/* App shell (dashboard / admin) -------------------------------------------*/
.app-shell{display:grid;grid-template-columns:230px 1fr;min-height:100vh}
.app-sidebar{background:linear-gradient(165deg,#111111,#1d1d1d);color:#fff;padding:28px 20px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;overflow-y:auto}
.app-logo{font-weight:800;font-size:1.15rem;margin-bottom:4px}
.app-logo .dot{color:var(--red)}
.app-logo-sub{font-size:.68rem;opacity:.55;letter-spacing:.06em;text-transform:uppercase;margin-bottom:32px}
.app-nav{display:flex;flex-direction:column;gap:2px}
.app-nav a,.app-nav button{display:flex;align-items:center;gap:10px;background:transparent;border:none;color:rgba(255,255,255,.68);padding:11px 12px;border-radius:10px;cursor:pointer;text-align:left;font-size:.9rem;font-weight:600;text-decoration:none;transition:background .15s var(--ease),color .15s var(--ease)}
.app-nav a:hover,.app-nav button:hover{background:rgba(255,255,255,.06);color:#fff}
.app-nav a.active{background:#fff;color:var(--ink)}
.app-sidebar-footer{margin-top:auto;display:flex;flex-direction:column;gap:8px}
.app-sidebar-footer button{background:transparent;border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.8);padding:9px 12px;border-radius:10px;cursor:pointer;font-size:.85rem;font-family:inherit}
.app-sidebar-footer button:hover{border-color:#fff;color:#fff}

/* Profile menu (sidebar footer) — always dark, independent of the content
   theme toggle it contains ------------------------------------------------*/
.profile-menu{position:relative}
.profile-trigger{display:flex;align-items:center;gap:10px;width:100%;background:transparent;border:1px solid rgba(255,255,255,.14);color:#fff;padding:8px 10px;border-radius:12px;cursor:pointer;text-align:left;transition:background .15s var(--ease);font-family:inherit}
.profile-trigger:hover{background:rgba(255,255,255,.06)}
.profile-avatar{flex-shrink:0;width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,.14);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.8rem;color:#fff}
.profile-trigger-info{flex:1;min-width:0;display:flex;flex-direction:column}
.profile-trigger-name{font-size:.85rem;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.profile-trigger-email{font-size:.72rem;color:rgba(255,255,255,.5);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.profile-trigger-chevron{flex-shrink:0;color:rgba(255,255,255,.4)}
.profile-panel{position:absolute;bottom:calc(100% + 8px);left:0;right:0;background:#1c1c20;border:1px solid rgba(255,255,255,.1);border-radius:14px;padding:10px;box-shadow:0 20px 46px rgba(0,0,0,.45);z-index:60}
.profile-panel-header{display:flex;align-items:center;gap:10px;padding:6px 6px 12px}
.profile-panel-header .profile-avatar{width:38px;height:38px;font-size:.85rem}
.profile-panel-name{font-size:.88rem;font-weight:700;color:#fff}
.profile-panel-email{font-size:.74rem;color:rgba(255,255,255,.5)}
.theme-switch{display:flex;background:rgba(255,255,255,.06);border-radius:10px;padding:4px;gap:2px;margin-bottom:10px}
.theme-switch button{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;background:transparent;border:none;color:rgba(255,255,255,.55);padding:8px 4px;border-radius:8px;font-size:.66rem;font-weight:600;cursor:pointer;font-family:inherit}
.theme-switch button svg{width:15px;height:15px}
.theme-switch button.active{background:rgba(255,255,255,.14);color:#fff}
.profile-menu-item{display:flex;align-items:center;gap:10px;width:100%;background:transparent;border:none;color:rgba(255,255,255,.8);padding:9px 8px;border-radius:8px;cursor:pointer;font-size:.85rem;text-align:left;font-family:inherit}
.profile-menu-item:hover{background:rgba(255,255,255,.06);color:#fff}
.profile-menu-divider{height:1px;background:rgba(255,255,255,.1);margin:6px 0}
.profile-menu-item--danger{color:#ff6b60}
.profile-menu-item--danger:hover{background:rgba(255,59,48,.12);color:#ff6b60}

.app-main{padding:48px 44px;overflow-x:hidden;max-width:960px}
.app-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px;flex-wrap:wrap;gap:12px}
.app-header h1{font-size:1.5rem;font-weight:800;color:var(--text-strong)}
.app-header p{font-size:.88rem;opacity:.65;margin-top:2px}

.mobile-menu-toggle{display:none}
.sidebar-overlay{display:none}
@media (max-width:820px){
  .app-shell{grid-template-columns:1fr}
  .mobile-menu-toggle{display:flex;position:fixed;top:14px;left:14px;z-index:210;width:44px;height:44px;border-radius:12px;background:var(--ink);color:#fff;border:none;align-items:center;justify-content:center;font-size:1.4rem;cursor:pointer;box-shadow:0 6px 16px rgba(17,17,17,.3)}
  .app-sidebar{position:fixed;top:0;left:0;transform:translateX(-100%);width:82%;max-width:320px;height:100vh;z-index:200;flex-direction:column;align-items:flex-start;padding:80px 24px 24px;transition:transform .3s var(--ease);overflow-y:auto}
  .app-sidebar.open{transform:translateX(0)}
  .app-nav{flex-direction:column;width:100%}
  .app-nav a,.app-nav button{width:100%}
  .app-sidebar-footer{margin-top:auto;flex-direction:column;width:100%}
  .app-main{padding:80px 20px 24px}
  .sidebar-overlay.open{display:block;position:fixed;inset:0;background:rgba(17,17,17,.55);z-index:190}
}

.kpi-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-bottom:28px}
.kpi-card{background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--radius);padding:18px 20px}
.kpi-label{font-size:.76rem;color:var(--ink-2);opacity:.7;margin-bottom:6px}
.kpi-value{font-weight:800;font-size:1.4rem;color:var(--text-strong)}

.module{background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--radius);padding:20px;margin-top:16px}
.module h2{color:var(--text-strong);font-size:1.02rem;font-weight:700;margin-bottom:10px}
.lesson-row{display:flex;justify-content:space-between;align-items:center;padding:9px 0;border-top:1px solid var(--line)}
.lesson-row:first-of-type{border-top:none}
.lesson-row a{color:var(--ink-2);text-decoration:none;font-size:.92rem}
.lesson-row a:hover{color:var(--text-strong)}
.done{color:var(--yellow);font-weight:800}

.form-grid{display:grid;gap:14px;max-width:420px}
.form-grid label{font-size:.82rem;font-weight:700;color:var(--text-strong);display:block;margin-bottom:5px}
.form-grid input,.form-grid select{width:100%;padding:10px 12px;border:1.5px solid var(--line-strong);border-radius:var(--radius-sm);background:var(--surface);color:var(--ink-2)}

.notice-msg{background:#e9f8ee;color:#1c6b3a;padding:10px 14px;border-radius:var(--radius-sm);font-size:.88rem;margin-top:14px}

.profile-row{display:flex;justify-content:space-between;padding:12px 0;border-top:1px solid var(--line);font-size:.92rem}
.profile-row:first-child{border-top:none}
.profile-row span:first-child{opacity:.6}
.profile-row span:last-child{font-weight:600;color:var(--text-strong)}

.lesson-text{white-space:pre-line;margin-top:16px}
.cert{border:3px solid var(--ink);border-radius:var(--radius);padding:48px;text-align:center}
.cert h1{font-size:1.6rem;margin-bottom:8px}
.cert .name{font-size:1.3rem;color:var(--yellow);margin:20px 0;font-weight:800}
@media print { .btn, .alt-link, .app-sidebar { display:none } .app-shell{display:block} }

/* Data tables (admin lists) ------------------------------------------------*/
.table-scroll{overflow-x:auto}
.data-table{width:100%;border-collapse:collapse;font-size:.88rem;min-width:520px}
.data-table th{text-align:left;font-size:.7rem;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-2);opacity:.6;padding:8px 10px;border-bottom:1px solid var(--line-strong)}
.data-table td{padding:11px 10px;border-bottom:1px solid var(--line)}
.data-table tr:last-child td{border-bottom:none}
.status-pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:.7rem;font-weight:700}
.status-level-1{background:#eef1f5;color:#41505f}
.status-level-2{background:#fff4d6;color:#8a6300}
.status-level-3{background:#e6f7ea;color:#1c6b3a}
.status-admin{background:#e8eefc;color:#2a4b9b}
.empty-state{padding:32px 16px;text-align:center;color:var(--ink-2);opacity:.6;font-size:.9rem}

/* AI chat widget ------------------------------------------------------------*/
.chat-bubble{position:fixed;bottom:24px;right:24px;width:56px;height:56px;border-radius:50%;background:var(--ink);color:#fff;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 8px 20px rgba(17,17,17,.3);z-index:150;transition:transform .15s var(--ease)}
.chat-bubble:hover{transform:scale(1.06)}
.chat-bubble.open{background:var(--red)}
.chat-panel{position:fixed;bottom:92px;right:24px;width:340px;max-width:calc(100vw - 32px);height:440px;max-height:calc(100vh - 140px);background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--radius);box-shadow:0 20px 48px rgba(17,17,17,.22);display:none;flex-direction:column;overflow:hidden;z-index:150}
.chat-panel.open{display:flex}
.chat-panel-header{background:var(--ink);color:#fff;padding:14px 16px;font-weight:700;font-size:.92rem}
.chat-panel-messages{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px}
.chat-msg{padding:9px 12px;border-radius:12px;font-size:.86rem;max-width:85%;line-height:1.4}
.chat-msg--assistant{background:var(--bg);color:var(--ink-2);align-self:flex-start}
.chat-msg--user{background:var(--ink);color:#fff;align-self:flex-end}
.chat-panel-form{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line)}
.chat-panel-form input{flex:1;padding:9px 12px;border:1.5px solid var(--line-strong);border-radius:var(--radius-sm);font-family:inherit;font-size:.86rem;background:var(--surface);color:var(--ink-2)}
.chat-panel-form button{background:var(--ink);color:#fff;border:none;border-radius:var(--radius-sm);padding:9px 14px;font-weight:700;font-size:.85rem;cursor:pointer;font-family:inherit}
@media (max-width:480px){ .chat-panel{right:16px;bottom:84px} .chat-bubble{right:16px;bottom:16px} }