/* ============================================================
   Monitores de Colegios — app.css
   ============================================================ */
:root {
    --bg:          #0f1117;
    --surface:     #1a1d27;
    --surface-2:   #22263a;
    --border:      #2e3250;
    --border-light:#3a3f60;
    --text:        #e2e8f0;
    --text-muted:  #7c85a8;
    --text-dim:    #4a5080;
    --accent:      #6366f1;
    --accent-h:    #4f52d4;
    --accent-soft: rgba(99,102,241,0.12);
    --success:     #22c55e;
    --success-soft:rgba(34,197,94,0.12);
    --warning:     #f59e0b;
    --warning-soft:rgba(245,158,11,0.12);
    --danger:      #ef4444;
    --danger-soft: rgba(239,68,68,0.12);
    --info:        #38bdf8;
    --info-soft:   rgba(56,189,248,0.12);
    --sidebar-w:   248px;
    --radius:      10px;
    --radius-sm:   6px;
    --shadow:      0 4px 24px rgba(0,0,0,0.45);
    --tr:          0.17s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:14px}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-h)}

/* ---- Layout ---- */
.app-layout{display:flex;min-height:100vh}

/* ---- Sidebar ---- */
.sidebar{width:var(--sidebar-w);background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:200;transition:transform var(--tr);overflow-y:auto}
.sidebar-brand{display:flex;align-items:center;gap:10px;padding:18px 14px;border-bottom:1px solid var(--border)}
.brand-icon{width:36px;height:36px;background:var(--accent-soft);border:1px solid var(--accent);border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--accent);flex-shrink:0}
.brand-text{display:flex;flex-direction:column}
.brand-name{font-weight:700;font-size:0.84rem;color:var(--text);line-height:1.2}
.brand-role{font-size:0.68rem;color:var(--text-muted)}
.sidebar-nav{flex:1;padding:10px 8px}
.nav-section-label{font-size:0.63rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--text-dim);padding:10px 8px 4px}
.nav-item{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:var(--radius-sm);color:var(--text-muted);font-size:0.81rem;font-weight:500;transition:all var(--tr);margin-bottom:1px;position:relative}
.nav-item:hover{background:var(--surface-2);color:var(--text)}
.nav-item.active{background:var(--accent-soft);color:var(--accent)}
.nav-badge{margin-left:auto;background:var(--danger);color:#fff;font-size:.63rem;font-weight:700;padding:1px 6px;border-radius:20px}
.sidebar-footer{padding:12px;border-top:1px solid var(--border);display:flex;align-items:center;gap:8px}
.user-info{display:flex;align-items:center;gap:8px;flex:1;min-width:0}
.user-avatar{width:32px;height:32px;background:var(--accent);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.68rem;font-weight:700;color:#fff;flex-shrink:0}
.user-details{display:flex;flex-direction:column;min-width:0}
.user-name{font-size:.77rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.user-code{font-size:.63rem;color:var(--text-muted);font-family:'JetBrains Mono',monospace}
.btn-logout{color:var(--text-dim);padding:6px;border-radius:var(--radius-sm);transition:all var(--tr);display:flex}
.btn-logout:hover{color:var(--danger);background:var(--danger-soft)}

/* ---- Main ---- */
.main-content{margin-left:var(--sidebar-w);flex:1;display:flex;flex-direction:column}
.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:0 22px;height:54px;display:flex;align-items:center;gap:14px;position:sticky;top:0;z-index:100}
.sidebar-toggle{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px;border-radius:4px;display:none}
.topbar-title h1{font-size:.93rem;font-weight:600}
.topbar-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.topbar-date{font-size:.72rem;color:var(--text-muted)}
.topbar-time{font-family:'JetBrains Mono',monospace;font-size:.78rem;color:var(--accent);background:var(--accent-soft);padding:3px 8px;border-radius:4px;border:1px solid rgba(99,102,241,.2)}
.content-body{padding:22px;flex:1}

/* ---- Flash ---- */
.flash{margin:0 22px 0;padding:10px 16px;border-radius:var(--radius-sm);display:flex;align-items:center;gap:8px;font-size:.81rem;font-weight:500;border:1px solid;position:relative}
.flash-success{background:var(--success-soft);border-color:var(--success);color:var(--success)}
.flash-error  {background:var(--danger-soft); border-color:var(--danger); color:var(--danger)}
.flash-warning{background:var(--warning-soft);border-color:var(--warning);color:var(--warning)}
.flash-info   {background:var(--info-soft);   border-color:var(--info);   color:var(--info)}
.flash-close{margin-left:auto;background:none;border:none;color:inherit;cursor:pointer;font-size:1rem;padding:0 4px}

/* ---- Cards ---- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--border)}
.card-title{font-size:.87rem;font-weight:600;color:var(--text);display:flex;align-items:center;gap:8px}

/* ---- Stats ---- */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:22px}
.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;display:flex;align-items:flex-start;gap:12px;transition:border-color var(--tr)}
.stat-card:hover{border-color:var(--border-light)}
.stat-icon{width:38px;height:38px;border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.stat-icon.indigo{background:var(--accent-soft);color:var(--accent)}
.stat-icon.green {background:var(--success-soft);color:var(--success)}
.stat-icon.yellow{background:var(--warning-soft);color:var(--warning)}
.stat-icon.red   {background:var(--danger-soft); color:var(--danger)}
.stat-icon.blue  {background:var(--info-soft);   color:var(--info)}
.stat-info{flex:1}
.stat-value{font-size:1.5rem;font-weight:700;line-height:1.1;color:var(--text)}
.stat-label{font-size:.7rem;color:var(--text-muted);margin-top:2px}
.stat-sub{font-size:.68rem;color:var(--text-dim);margin-top:3px}

/* ---- Tables ---- */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:.79rem}
thead th{padding:9px 13px;text-align:left;font-size:.67rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--text-muted);border-bottom:1px solid var(--border);white-space:nowrap}
tbody tr{border-bottom:1px solid var(--border);transition:background var(--tr)}
tbody tr:last-child{border-bottom:none}
tbody tr:hover{background:var(--surface-2)}
tbody td{padding:10px 13px;color:var(--text);vertical-align:middle}
tbody td.muted{color:var(--text-muted)}

/* ---- Badges ---- */
.badge{display:inline-flex;align-items:center;font-size:.67rem;font-weight:600;letter-spacing:.03em;padding:2px 8px;border-radius:20px;white-space:nowrap}
.badge-success  {background:var(--success-soft);color:var(--success)}
.badge-warning  {background:var(--warning-soft);color:var(--warning)}
.badge-danger   {background:var(--danger-soft); color:var(--danger)}
.badge-info     {background:var(--info-soft);   color:var(--info)}
.badge-secondary{background:var(--surface-2);color:var(--text-muted)}
.badge-indigo   {background:var(--accent-soft); color:var(--accent)}

/* ---- Buttons ---- */
.btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:var(--radius-sm);font-size:.79rem;font-weight:500;cursor:pointer;border:none;transition:all var(--tr);text-decoration:none;line-height:1.4}
.btn-primary {background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-h);color:#fff}
.btn-success {background:var(--success);color:#fff}
.btn-success:hover{opacity:.85}
.btn-danger  {background:var(--danger);color:#fff}
.btn-danger:hover{opacity:.85}
.btn-warning {background:var(--warning);color:#000}
.btn-outline {background:transparent;color:var(--text-muted);border:1px solid var(--border)}
.btn-outline:hover{border-color:var(--border-light);color:var(--text);background:var(--surface-2)}
.btn-ghost   {background:none;color:var(--text-muted)}
.btn-ghost:hover{color:var(--text);background:var(--surface-2)}
.btn-sm{padding:4px 10px;font-size:.74rem}
.btn-lg{padding:10px 20px;font-size:.88rem}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* ---- Forms ---- */
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px}
.form-group{display:flex;flex-direction:column;gap:5px}
.form-group.full{grid-column:1/-1}
label{font-size:.73rem;font-weight:500;color:var(--text-muted)}
input,select,textarea{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);padding:7px 10px;font-size:.81rem;font-family:inherit;transition:border-color var(--tr);width:100%}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
textarea{resize:vertical;min-height:76px}
select option{background:var(--surface)}
.filters-bar{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end;margin-bottom:16px}
.filters-bar .form-group{min-width:130px}

/* ---- Pagination ---- */
.pagination{display:flex;align-items:center;gap:4px;justify-content:center;margin-top:14px}
.pagination a,.pagination span{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:var(--radius-sm);font-size:.77rem;border:1px solid var(--border);color:var(--text-muted);transition:all var(--tr)}
.pagination a:hover{background:var(--surface-2);color:var(--text)}
.pagination .active-page{background:var(--accent);border-color:var(--accent);color:#fff}

/* ---- Session cards (monitor fichaje) ---- */
.session-list{display:grid;gap:14px}
.session-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;display:grid;grid-template-columns:1fr auto;gap:12px;align-items:start;transition:border-color var(--tr)}
.session-card:hover{border-color:var(--border-light)}
.session-card.active-session{border-color:var(--success);box-shadow:0 0 0 1px var(--success)}
.session-card.completed{opacity:.75}
.session-school{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.school-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}
.school-name{font-weight:700;font-size:.9rem}
.session-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:.76rem;color:var(--text-muted)}
.session-meta span{display:flex;align-items:center;gap:4px}
.session-times{display:flex;gap:16px;margin-top:10px}
.time-block{background:var(--surface-2);border-radius:6px;padding:8px 12px;text-align:center;min-width:80px}
.time-block .label{font-size:.63rem;color:var(--text-dim);text-transform:uppercase;letter-spacing:.05em}
.time-block .value{font-family:'JetBrains Mono',monospace;font-size:1rem;font-weight:700;margin-top:2px}
.time-block .value.green{color:var(--success)}
.time-block .value.blue {color:var(--info)}
.time-block .value.dim  {color:var(--text-dim)}
.session-actions{display:flex;flex-direction:column;gap:6px;align-items:flex-end}

/* ---- Clock widget ---- */
.clock-widget{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;text-align:center;position:relative;overflow:hidden;margin-bottom:22px}
.clock-widget::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 50% -20%,var(--accent-soft),transparent 65%);pointer-events:none}
.clock-time{font-family:'JetBrains Mono',monospace;font-size:2.6rem;font-weight:700;color:var(--text);letter-spacing:.05em;line-height:1}
.clock-date{font-size:.78rem;color:var(--text-muted);margin-top:4px}

/* ---- Progress bar ---- */
.timeline-bar{height:5px;background:var(--surface-2);border-radius:3px;overflow:hidden;margin-top:5px}
.timeline-fill{height:100%;border-radius:3px;background:var(--accent);transition:width .4s ease}

/* ---- Modal ---- */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);backdrop-filter:blur(4px);z-index:500;align-items:center;justify-content:center}
.modal-overlay.open{display:flex}
.modal{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);width:100%;max-width:500px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow);padding:22px;position:relative}
.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.modal-title{font-size:.93rem;font-weight:700}
.modal-close{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px;border-radius:4px;font-size:1.2rem}
.modal-close:hover{color:var(--danger)}
.modal-footer{display:flex;gap:8px;justify-content:flex-end;margin-top:18px;padding-top:14px;border-top:1px solid var(--border)}

/* ---- Dot pulse ---- */
.dot{width:8px;height:8px;border-radius:50%;animation:pulse 2s ease-in-out infinite;display:inline-block}
.dot-green {background:var(--success);box-shadow:0 0 8px var(--success)}
.dot-yellow{background:var(--warning);box-shadow:0 0 8px var(--warning)}
.dot-red   {background:var(--danger); box-shadow:0 0 8px var(--danger)}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

/* ---- Page header ---- */
.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;flex-wrap:wrap;gap:10px}
.page-header-left h2{font-size:.98rem;font-weight:700}
.page-header-left p{font-size:.73rem;color:var(--text-muted);margin-top:2px}

/* ---- Grid ---- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}

/* ---- Login ---- */
.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg);background-image:radial-gradient(ellipse at 50% 0%,rgba(99,102,241,.15) 0%,transparent 60%)}
.login-box{width:100%;max-width:390px;padding:20px}
.login-logo{text-align:center;margin-bottom:26px}
.login-logo .icon{width:50px;height:50px;background:var(--accent-soft);border:1px solid var(--accent);border-radius:12px;display:inline-flex;align-items:center;justify-content:center;color:var(--accent);margin-bottom:10px}
.login-logo h1{font-size:1.15rem;font-weight:700}
.login-logo p{font-size:.75rem;color:var(--text-muted);margin-top:4px}
.login-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px}
.login-card .form-group{margin-bottom:13px}

/* ---- Empty state ---- */
.empty-state{text-align:center;padding:40px 20px;color:var(--text-muted)}
.empty-state svg{margin-bottom:10px;opacity:.35}
.empty-state p{font-size:.8rem}

/* ---- School color pill ---- */
.school-pill{display:inline-flex;align-items:center;gap:5px;padding:2px 8px;border-radius:20px;font-size:.72rem;font-weight:600}

/* ---- Responsive ---- */
@media(max-width:768px){
    .sidebar{transform:translateX(-100%)}
    .sidebar.open{transform:translateX(0)}
    .main-content{margin-left:0}
    .sidebar-toggle{display:flex}
    .grid-2,.grid-3{grid-template-columns:1fr}
    .stats-grid{grid-template-columns:repeat(2,1fr)}
    .content-body{padding:14px}
    .session-card{grid-template-columns:1fr}
    .session-actions{flex-direction:row}
}
@media(max-width:480px){
    .stats-grid{grid-template-columns:1fr}
    .clock-time{font-size:2rem}
    .topbar-date{display:none}
}