:root{--ink:#22352e;--muted:#78837e;--green:#183e35;--accent:#b4cf7b;--paper:#f6f7f2;--line:#e1e7df;--white:#fff;--blue:#4267a3;--red:#a73838;--shadow:0 14px 45px #1e3c2c0d}
*{box-sizing:border-box}body{margin:0;background:var(--paper);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);font-size:15px;line-height:1.5}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,select{outline-offset:4px}button{cursor:pointer}button:disabled{opacity:.55;cursor:wait}button{border:0}input,select,textarea{width:100%;border:1px solid #d8e0d6;border-radius:10px;padding:12px 13px;background:#fff;color:var(--ink)}input:focus,select:focus,textarea:focus{outline:2px solid #a9c78c;border-color:transparent}input[type=checkbox]{width:18px;height:18px;accent-color:var(--green)}label{display:block;font-size:13px;font-weight:600;margin-bottom:7px}h1,h2,h3,p{margin-top:0}h1{font-size:34px;line-height:1.18;letter-spacing:-1px;font-weight:650}h2{font-size:21px;letter-spacing:-.4px;font-weight:650}h3{font-size:16px;font-weight:650}small,.muted{color:var(--muted)}strong{font-weight:650}.hidden{display:none!important}.icon{width:20px;height:20px;display:inline-block;vertical-align:middle;flex:none}.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:11px 18px;border-radius:10px;background:var(--green);color:#fff;font-weight:600;font-size:13px;white-space:nowrap}.button:hover{background:#235447}.button.secondary{background:#fff;border:1px solid var(--line);color:var(--ink)}.button.secondary:hover{background:#f0f4ec}.button.light{background:#d9e9bb;color:#25442e}.button.text{background:transparent;color:var(--muted);padding-left:0;padding-right:0}.button.danger{background:#f8e9e7;color:var(--red)}.button.small{min-height:34px;padding:7px 11px;font-size:12px}.row{display:flex;align-items:center;gap:12px}.spread{display:flex;align-items:center;justify-content:space-between;gap:18px}.wrap{flex-wrap:wrap}.stack{display:flex;flex-direction:column;gap:16px}.eyebrow{font-size:11px;letter-spacing:1.5px;font-weight:700;text-transform:uppercase;color:#7e8a78;margin-bottom:14px}.pill{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:650;padding:5px 9px;border-radius:20px;background:#edf2e8;color:#52654a;white-space:nowrap}.pill.success{background:#e6f0db;color:#4b6f38}.pill.warning{background:#fcf0d7;color:#8a681d}.pill.off{background:#f0f0ed;color:#8a8a84}.pill.soft{background:#ffffff17;color:#dbe8d0}.brand{display:flex;align-items:center;gap:11px;font-size:21px;font-weight:700;letter-spacing:-.8px}.brand-mark{display:grid;place-items:center;flex:none;width:39px;height:39px;border-radius:11px;background:var(--accent);color:var(--green);font-size:23px;font-weight:750;box-shadow:inset 0 0 0 1px #ffffff18}.brand-sub{font-size:9px;font-weight:500;letter-spacing:1.8px;display:block;color:#9bad9f;text-transform:uppercase;margin-top:1px}.boot-screen{display:flex;align-items:center;justify-content:center;gap:18px;min-height:100vh}.boot-screen p{margin:0}.skip-link{position:fixed;top:-60px;left:15px;z-index:2000;background:#fff;padding:12px}.skip-link:focus{top:10px}.toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%,20px);background:#223b32;color:#fff;padding:12px 20px;border-radius:12px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.2s;z-index:2000;max-width:min(90vw,650px)}.toast.show{opacity:1;transform:translate(-50%,0)}.error-line{background:#fff0eb;border:1px solid #f2d7cb;color:#953f2f;padding:12px 14px;border-radius:10px;font-size:13px;margin:15px 0}.hint{font-size:12px;color:var(--muted);line-height:1.6;margin:8px 0 0}
/* Acceso */
.auth-layout{min-height:100vh;display:grid;grid-template-columns:1.05fr 1fr}.auth-story{background:var(--green);color:#fff;padding:56px 10%;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}.auth-story:before{content:"";position:absolute;width:450px;height:450px;border:1px solid #8daf8240;right:-230px;top:160px;border-radius:50%}.auth-story:after{content:"";position:absolute;width:620px;height:620px;border:1px solid #8daf8220;right:-315px;top:80px;border-radius:50%;pointer-events:none}.auth-story h1{font-size:clamp(36px,4vw,58px);max-width:530px;letter-spacing:-2px;line-height:1.08;margin:45px 0 24px;position:relative;z-index:1}.auth-story h1 em{font-style:normal;color:#c5db9f}.auth-story>div{position:relative;z-index:1}.auth-story p{max-width:400px;color:#bccdc1;font-size:16px}.auth-steps{display:flex;gap:24px;margin-top:45px;flex-wrap:wrap}.auth-steps strong{font-size:25px;color:#dfebd3}.auth-steps span{display:block;color:#a9bfb0;font-size:11px;margin-top:4px}.auth-footer{font-size:12px;color:#a2b7a8;margin-top:50px}.auth-form-area{display:flex;align-items:center;justify-content:center;padding:50px 30px}.auth-card{width:100%;max-width:385px}.auth-card h2{font-size:29px;letter-spacing:-.8px;margin-bottom:10px}.auth-card>p{color:var(--muted);font-size:14px;margin-bottom:30px}.field{margin-bottom:19px}.password-wrap{position:relative}.password-wrap input{padding-right:48px}.password-toggle{position:absolute;right:10px;top:8px;background:transparent;color:var(--muted);padding:5px}.auth-card .button[type=submit]{width:100%;margin-top:5px}.auth-help{padding-top:25px;margin-top:28px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);line-height:1.7}.auth-mobile-brand{display:none}.setup-card{max-width:510px}.setup-note{background:#edf2e6;padding:16px;border-radius:12px;font-size:13px;margin-bottom:20px}.check-label{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:500;margin-top:9px}
/* Estructura */
.sidebar{position:fixed;inset:0 auto 0 0;width:270px;background:#17382f;color:#dbe5db;padding:32px 20px 20px;display:flex;flex-direction:column;z-index:80;overflow-y:auto}.sidebar>.brand{margin:0 10px 34px;color:#fff}.sidebar .brand-mark{width:35px;height:35px;font-size:21px}.nav-heading{font-size:10px;letter-spacing:1.7px;color:#7f9b8b;font-weight:650;margin:27px 13px 11px}.nav-item{display:flex;align-items:center;gap:11px;padding:11px 13px;margin-bottom:4px;border-radius:9px;font-size:12px;color:#b2c6b8;min-height:43px}.nav-item:hover{background:#ffffff08;color:#e6efdf}.nav-item.active{background:#ffffff0e;color:#eff7e5}.nav-item.active .nav-number{background:var(--accent);color:#203f2e}.nav-number{display:grid;place-items:center;width:25px;height:25px;border:1px solid #ffffff22;border-radius:7px;font-size:10px;color:#a7bba8;flex:none}.nav-title{flex:1}.nav-check{font-size:10px;color:#aeca8f}.sidebar-progress{margin-top:auto;padding:27px 13px 13px;border-top:1px solid #ffffff12}.sidebar-progress p{font-size:11px;color:#8fa897;margin:9px 0 0}.sidebar-progress .spread{font-size:11px;color:#c9d7c6}progress{display:block;width:100%;border:0;height:6px;border-radius:20px;overflow:hidden;background:#e2e9dc;margin-top:12px}progress::-webkit-progress-bar{background:#e2e9dc;border-radius:20px}progress::-webkit-progress-value{background:#8dab62;border-radius:20px}progress::-moz-progress-bar{background:#8dab62;border-radius:20px}.sidebar progress::-webkit-progress-bar{background:#365246}.sidebar progress::-webkit-progress-value{background:var(--accent)}.main-layout{margin-left:270px}.topbar{height:81px;display:flex;justify-content:space-between;align-items:center;padding:0 44px;border-bottom:1px solid var(--line);background:#fff;gap:20px}.breadcrumbs{font-size:12px;color:#8a948b}.breadcrumbs strong{color:#44564a;font-weight:550}.top-actions{display:flex;align-items:center;gap:22px}.searchbox{position:relative;min-width:240px}.searchbox>.icon{position:absolute;left:12px;top:10px;color:#8d988d;width:17px}.searchbox input{padding:9px 12px 9px 38px;background:#f7f8f4;border:0;border-radius:9px;font-size:12px}.search-results{position:absolute;top:45px;right:0;width:360px;max-height:400px;overflow:auto;box-shadow:0 12px 35px #12351b22;background:white;z-index:100;border:1px solid var(--line);border-radius:12px;padding:8px}.search-results a{display:block;padding:10px;border-radius:7px;font-size:12px}.search-results a:hover{background:#f0f4eb}.search-results small{display:block;font-size:10px;margin-top:3px}.profile-btn{display:flex;align-items:center;gap:10px;background:transparent;padding:0;text-align:left}.avatar{display:grid;place-items:center;width:35px;height:35px;border-radius:50%;background:#e8eddf;color:#4b6540;font-weight:650;font-size:12px;flex:none}.profile-name{font-size:12px;font-weight:600;display:block}.profile-role{display:block;font-size:10px;color:var(--muted)}.icon-button{padding:8px;background:transparent;color:#7e8e7e;display:inline-flex;border-radius:8px}.icon-button:hover{background:#edf2e7}.mobile-menu{display:none}.content{max-width:1360px;margin:0 auto;padding:39px 44px 55px}.page-heading{margin-bottom:28px}.page-heading h1{font-size:31px;margin-bottom:9px}.page-heading p{font-size:13px;color:var(--muted);margin:0}.page-heading .eyebrow{margin-bottom:10px}.dashboard-grid{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:24px}.hero-card{background:#e5ecdb;border:1px solid #d9e4ca;border-radius:17px;padding:30px 32px;position:relative;overflow:hidden;margin-bottom:22px}.hero-card h2{font-size:27px;line-height:1.18;letter-spacing:-.8px;margin:12px 0}.hero-card p{font-size:13px;color:#6e7e63;max-width:430px;margin-bottom:22px}.hero-card .hero-tags{display:flex;gap:17px;font-size:10px;letter-spacing:.4px;color:#6b7f5b}.hero-card .hero-tags span{display:flex;gap:6px;align-items:center}.hero-card .hero-tags .icon{width:13px;height:13px}.hero-card .button{font-size:12px}.hero-grid-art{position:absolute;right:28px;top:28px;width:113px;height:126px;border-radius:11px;background:#fff5;display:grid;grid-template-columns:repeat(3,1fr);gap:5px;padding:10px;transform:rotate(6deg);border:1px solid #c8d7ba}.hero-grid-art span{border-radius:3px;background:#b3ca9350}.hero-grid-art span:nth-child(3n+1){background:#668f5344}.hero-grid-art span:nth-child(2){background:#71995999}.hero-card>.hero-copy{position:relative;z-index:1;max-width:75%}.section-heading{font-size:16px;margin-bottom:14px}.module-card{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}.module-head{display:flex;align-items:center;gap:15px;padding:21px 23px}.module-number{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;background:#f1f4eb;color:#70805d;font-weight:650;font-size:14px;flex:none}.module-info{flex:1;min-width:0}.module-info h3{font-size:14px;margin:0 0 4px}.module-info p{font-size:11px;color:#8a9586;margin:0}.module-meta{display:flex;align-items:center;gap:17px;flex:none}.module-meta .text-link{font-size:11px;font-weight:600;color:#789458}.text-link{color:#537a3a;font-size:12px}.chevron{width:15px;height:15px;color:#839575}.resource-card,.progress-card,.tip-card{border:1px solid var(--line);border-radius:14px;background:#fff;padding:23px;margin-bottom:19px}.progress-card h3,.resource-card h3{font-size:14px;margin-bottom:4px}.progress-card .big-number{font-size:36px;font-weight:650;letter-spacing:-1px;color:#36522c;margin:13px 0 0}.progress-card .big-number span{font-size:16px;font-weight:400;color:#9ba78f}.progress-card p{color:#8b9787;font-size:11px;margin-top:9px;margin-bottom:0}.resource-link{display:flex;gap:12px;align-items:center;padding:15px 0;border-bottom:1px solid #eef1e9;width:100%;background:none;text-align:left;color:var(--ink)}.resource-link:last-of-type{border-bottom:0}.resource-file{display:grid;place-items:center;background:#f4f2eb;width:35px;height:40px;border-radius:7px;color:#a09372;font-size:9px;font-weight:700;flex:none}.resource-file.excel{background:#edf2e7;color:#72924f}.resource-text{flex:1}.resource-text strong{font-size:11px;display:block}.resource-text small{font-size:10px;display:block;margin-top:3px}.resource-link>.icon{width:15px;color:#93a189}.tip-card{background:transparent;border-style:dashed;color:#8c9786;font-size:11px}.tip-card p{margin:9px 0 0;line-height:1.7}.tip-card strong{color:#66795b;font-size:11px}.footer-note{font-size:10px;color:#9ba595;margin-top:26px}.course-list{background:#fff;border:1px solid var(--line);border-radius:15px;padding:10px 25px}.lesson-row{display:flex;align-items:center;gap:14px;padding:17px 0;border-bottom:1px solid #ecf0e8}.lesson-row:last-child{border-bottom:0}.lesson-state{display:grid;place-items:center;width:27px;height:27px;flex:none;border:1px solid #dfe7d6;border-radius:50%;color:#a1ad96;font-size:10px}.lesson-state.done{background:#eaf2dd;border-color:#d2e2bd;color:#6b8e44}.lesson-row-title{flex:1}.lesson-row-title strong{font-size:13px;display:block}.lesson-row-title small{font-size:10px;display:block;margin-top:3px}.lesson-row:hover .lesson-row-title strong{color:#648a45}.module-intro{display:grid;grid-template-columns:1fr auto;gap:25px;margin-bottom:24px}.module-intro .module-number{width:55px;height:55px;border-radius:15px;font-size:21px}
/* Lección */
.lesson-layout{max-width:1020px;margin:auto}.lesson-top{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:25px}.back-link{display:flex;align-items:center;gap:7px;font-size:11px;color:#8b9786}.back-link .icon{width:15px}.lesson-paper{background:#fff;border:1px solid var(--line);border-radius:16px;padding:38px 43px;box-shadow:var(--shadow)}.lesson-paper>h1{font-size:30px;line-height:1.22;margin:0 0 27px}.lesson-body{color:#465348;line-height:1.8;font-size:14px}.lesson-body h2{color:#305a43;font-size:19px;margin-top:29px;margin-bottom:12px}.lesson-body h3{font-size:16px;margin-top:20px}.lesson-body p{margin-bottom:16px}.lesson-body .bullet{padding-left:19px;position:relative;margin:9px 0}.lesson-body .bullet:before{content:"";position:absolute;width:5px;height:5px;border-radius:50%;left:1px;top:11px;background:#8eaa73}.formula{display:flex;align-items:flex-start;gap:14px;background:#f3f5ee;border:1px solid #e4e9db;border-radius:9px;padding:15px 16px;margin:18px 0;font:12px/1.8 ui-monospace,SFMono-Regular,Consolas,monospace;color:#36573c;overflow-wrap:anywhere}.formula>div{flex:1}.formula strong{font-weight:550}.copy-formula{background:#fff;border:1px solid #dce4d3;border-radius:5px;padding:4px 7px;font-size:10px;color:#758766;flex:none}.lesson-note{border-left:3px solid #bccf9f;background:#f7f8f1;padding:14px 17px;font-size:13px;margin:24px 0;color:#6c7c5d}.table-scroll{max-width:100%;overflow-x:auto;margin:20px 0}table{width:100%;border-collapse:collapse;text-align:left}.lesson-body table{font-size:12px;min-width:430px}.lesson-body th{background:#eaf0e4;color:#53654b;font-size:11px;padding:12px 13px;border-bottom:1px solid #dce6d2}.lesson-body td{padding:12px 13px;border-bottom:1px solid #e7ece1;line-height:1.7;vertical-align:top;overflow-wrap:anywhere}.lesson-body tr:nth-child(even) td{background:#fafbf7}.lesson-body figure{margin:22px 0}.lesson-body img{max-width:100%;height:auto;border:1px solid #e9ede5;border-radius:7px}.lesson-controls{margin-top:30px;border-top:1px solid var(--line);padding-top:22px}.lesson-controls p{font-size:11px;color:#97a08f;margin-top:10px;margin-bottom:0}.lesson-next{display:flex;justify-content:space-between;gap:20px;margin-top:24px}.lesson-next a{padding:17px 0;max-width:47%;font-size:12px}.lesson-next a:last-child{text-align:right;margin-left:auto}.lesson-next small{display:block;font-size:9px;text-transform:uppercase;letter-spacing:1px;margin-bottom:4px}.resource-download-strip{display:flex;gap:10px;padding:18px 0 0;margin-top:15px;border-top:1px solid #edf0e7;flex-wrap:wrap}.resource-download-strip .button{font-size:11px}
/* Administración */
.admin-stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:25px}.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:21px}.stat label{color:#8b9786;font-size:10px;font-weight:500}.stat strong{display:block;font-size:29px;letter-spacing:-.8px;line-height:1.15;margin:7px 0}.stat small{font-size:10px}.panel{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}.panel-toolbar{padding:19px 23px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;align-items:center}.panel-toolbar h2{font-size:15px;margin:0}.filters{display:flex;gap:10px;padding:16px 23px;align-items:end;flex-wrap:wrap;background:#fcfdf9;border-bottom:1px solid var(--line)}.filters input,.filters select{max-width:230px;font-size:12px;padding:9px 11px}.filters label{font-size:10px;margin-bottom:5px}.filters .filter-field{min-width:140px}.data-table{font-size:12px}.data-table th{font-size:10px;color:#8d9987;font-weight:500;background:#fafcf7;padding:13px 18px;border-bottom:1px solid var(--line);white-space:nowrap}.data-table td{padding:17px 18px;border-bottom:1px solid #edf1e8;vertical-align:middle}.data-table tbody tr:last-child td{border:0}.data-table tbody tr:hover{background:#fcfdf9}.student-name{font-size:12px;font-weight:650;display:block}.student-email{font-size:10px;display:block;color:#97a18f;margin-top:3px}.mini-progress{min-width:90px}.mini-progress span{font-size:10px;color:#80916f}.mini-progress progress{height:4px;margin-top:7px}.cell-date{font-size:10px;color:#8b9786;white-space:nowrap}.cell-actions{display:flex;gap:4px;align-items:center}.empty-state{padding:55px 25px;text-align:center;color:#93a088}.empty-state .empty-icon{width:55px;height:55px;border-radius:16px;background:#f0f4e9;display:grid;place-items:center;margin:auto auto 16px;color:#8ca772}.empty-state h3{color:#64765a;font-size:16px}.empty-state p{font-size:12px;max-width:370px;margin:0 auto 20px}.table-footer{font-size:10px;color:#9ca48f;padding:14px 23px;border-top:1px solid var(--line)}.admin-legend{margin-top:16px;font-size:11px;color:#939d88;line-height:1.75}.activity-type{font-weight:550;font-size:11px}.detail-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:24px 0}.detail-stat{background:#f6f8f1;border:1px solid #e5eadc;border-radius:10px;padding:14px}.detail-stat small{font-size:10px;display:block}.detail-stat strong{font-size:21px;display:block;margin-top:5px}.timeline{list-style:none;padding:0;margin:15px 0}.timeline li{padding:11px 0 11px 19px;border-left:1px solid #dfe7d5;position:relative;font-size:12px}.timeline li:before{content:"";width:6px;height:6px;background:#bacf9d;border-radius:50%;position:absolute;left:-4px;top:18px}.timeline small{display:block;font-size:10px;margin-top:4px}.subheading{font-size:13px;margin:25px 0 8px}
/* Ventanas */
.modal-backdrop{position:fixed;inset:0;background:#142e2460;backdrop-filter:blur(3px);display:flex;align-items:center;justify-content:center;padding:25px;z-index:1000}.modal{background:#fff;border-radius:17px;width:100%;max-width:490px;max-height:90vh;overflow:auto;box-shadow:0 25px 90px #122d3150;padding:28px}.modal.wide{max-width:900px}.modal-header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:22px}.modal-header h2{margin:0;font-size:21px}.modal-header p{font-size:12px;color:var(--muted);margin:7px 0 0}.modal .field{margin-bottom:16px}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:23px}.credential-box{padding:18px;border:1px solid #dbe5cd;border-radius:11px;background:#f6f8ef;margin:18px 0}.credential-box code{display:block;font-size:19px;color:#385329;letter-spacing:1px;overflow-wrap:anywhere;padding:9px 0}.credential-box small{display:block}.profile-menu{display:flex;flex-direction:column;gap:8px}.profile-menu .button{justify-content:flex-start}.notice{font-size:12px;background:#f4f6ee;padding:13px 15px;border-radius:9px;color:#7a896b}
@media(min-width:1500px){.content{padding-top:48px}.dashboard-grid{grid-template-columns:minmax(0,1fr) 315px}.hero-card{padding:34px 38px}.hero-grid-art{right:38px;width:125px;height:137px}}
@media(max-width:1180px){.sidebar{width:235px;padding-left:14px;padding-right:14px}.main-layout{margin-left:235px}.topbar{padding:0 28px}.content{padding:30px 28px}.dashboard-grid{grid-template-columns:minmax(0,1fr) 250px;gap:18px}.searchbox{min-width:190px}.top-actions{gap:14px}.hero-card{padding:25px}.hero-grid-art{opacity:.6;right:16px}.module-head{padding:18px 20px}.module-meta .text-link{display:none}.admin-stat-grid{gap:10px}.stat{padding:16px}.data-table th,.data-table td{padding:13px 12px}}
@media(max-width:950px){.dashboard-grid{grid-template-columns:1fr}.dashboard-aside{display:grid;grid-template-columns:1fr 1fr;gap:18px}.tip-card{display:none}.admin-stat-grid{grid-template-columns:repeat(2,1fr)}.profile-name,.profile-role{display:none}.searchbox{min-width:160px}.lesson-paper{padding:29px}.lesson-paper>h1{font-size:26px}.content{padding:27px 22px}.module-meta{gap:8px}}
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