:root{--brand:#0057a9;--ink:#1b2530;--muted:#606871;--line:#e1e4e7;--bg:#f3f5f7;font-family:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:var(--ink);background:var(--bg);font-size:15px}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{outline-offset:4px}button{cursor:pointer}button:disabled{opacity:.5;cursor:default}button,.button{border:0;border-radius:9px;padding:11px 17px;background:var(--brand);color:#fff;font-weight:600;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px}button:hover{filter:brightness(.94)}.secondary{background:#edf0f2;color:var(--ink)}.ghost{background:transparent;color:var(--muted);padding:8px 10px}.danger{background:#fff0eb;color:#a5412c}.small{font-size:13px;padding:8px 11px}.demo{background:#e5ebf0;color:#3b4b5c;text-align:center;padding:8px 16px;font-size:12px}.layout{display:grid;grid-template-columns:242px 1fr;min-height:calc(100vh - 32px)}aside{background:white;border-right:1px solid var(--line);padding:30px 22px;display:flex;flex-direction:column;gap:28px}.brand{display:flex;align-items:center;gap:11px;font-size:15px;font-weight:700;line-height:1.35}.brand img{max-width:155px;max-height:55px;object-fit:contain}.brandmark{height:36px;width:36px;flex-shrink:0;border-radius:11px;background:var(--brand);display:grid;place-items:center;color:white;font-size:22px}nav{display:grid;gap:8px}nav button{justify-content:flex-start;background:transparent;color:var(--muted);font-weight:500}nav button.active{color:var(--brand);background:#edf1f5;font-weight:650}.aside-bottom{margin-top:auto;display:grid;gap:10px;font-size:12px;color:var(--muted);line-height:1.6}.profile{padding-top:18px;border-top:1px solid var(--line)}main{padding:38px 44px;max-width:1500px;width:100%}header{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:28px}.eyebrow{text-transform:uppercase;letter-spacing:.12em;color:var(--brand);font-size:11px;font-weight:750;margin:0 0 10px}h1{font-size:30px;font-weight:650;letter-spacing:-1px;margin:0 0 9px}h2{font-size:19px;letter-spacing:-.35px;margin:0 0 8px}h3{font-size:16px;margin:0 0 8px}p{line-height:1.6}.muted{color:var(--muted)}.subtitle{margin:0;color:var(--muted);font-size:14px}.card{background:white;border:1px solid var(--line);border-radius:15px;padding:25px;margin-bottom:20px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin:20px 0}.stat{background:white;border:1px solid var(--line);border-radius:13px;padding:21px}.stat span{font-size:13px;color:var(--muted)}.stat strong{display:block;font-size:33px;font-weight:600;margin:9px 0 5px}.stat small{font-size:11px;color:var(--muted)}.grid{display:grid;grid-template-columns:1.25fr 1fr;gap:20px}.notice{background:#edf0f4;border-radius:11px;padding:16px 18px;color:#364759;font-size:13px;line-height:1.65}.notice strong{display:block;margin-bottom:4px}.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.between{justify-content:space-between}.filters{display:flex;gap:12px;flex-wrap:wrap;align-items:end;margin:22px 0}.filters label{flex:1;min-width:145px}label{display:grid;gap:7px;font-size:12px;color:var(--muted)}input,select{padding:11px 12px;background:white;border:1px solid #d5dadf;border-radius:8px;color:var(--ink);width:100%;min-width:0}input[type=color]{height:43px;padding:4px}input[type=checkbox]{width:18px;flex-shrink:0;accent-color:var(--brand)}.field{margin:18px 0}.check{display:flex;align-items:flex-start;gap:12px;line-height:1.7}.check input{margin-top:5px}.date-strip{display:grid;grid-template-columns:repeat(5,1fr);gap:9px;margin:20px 0}.date-strip button{background:white;border:1px solid var(--line);color:var(--muted);display:grid;gap:6px;padding:14px 6px;font-size:12px}.date-strip b{font-size:22px;font-weight:600;color:var(--ink)}.date-strip button.selected{background:var(--brand);color:white;border-color:var(--brand)}.date-strip .selected b{color:white}.times{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:20px}.times button{background:white;color:var(--brand);border:1px solid #bec8d3;padding:13px 8px}.times small{display:block;font-size:10px;font-weight:400}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%;font-size:13px;white-space:nowrap}th{text-align:left;font-size:11px;font-weight:600;color:var(--muted);padding:13px 12px;background:#f6f8f9}td{padding:17px 12px;border-bottom:1px solid var(--line)}td small{display:block;margin-top:5px;color:var(--muted)}.badge{font-size:11px;border-radius:20px;padding:5px 9px;display:inline-block;background:#edf0f2;color:#515a63}.badge.reserved{background:#e9f1fd;color:#3d6091}.badge.completed{background:#e7eef4;color:#2a4d70}.badge.cancelled_student,.badge.cancelled_teacher{background:#fff0e6;color:#9a5d2f}.badge.absent_teacher,.badge.absent_student{background:#fdeaea;color:#9c3f3f}.empty{text-align:center;padding:35px 15px;color:var(--muted);line-height:1.7}.empty-symbol{font-size:30px;color:#98a1aa;margin-bottom:10px}.appointment{display:flex;align-items:center;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}.date-block{background:#ecf0f4;border-radius:10px;padding:11px 16px;text-align:center;min-width:68px;font-size:11px;color:var(--muted)}.date-block b{display:block;font-size:24px;color:var(--ink);margin-top:3px}.grow{flex:1}.progress{height:7px;background:#e5e9ec;border-radius:5px;overflow:hidden;margin:15px 0}.progress span{display:block;height:100%;background:var(--brand)}.integration{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.integration>div{border:1px solid var(--line);border-radius:9px;padding:15px;font-size:12px}.integration b{display:block;margin-bottom:8px}.login{max-width:900px;margin:70px auto;padding:24px}.login-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.login h1{font-size:40px;line-height:1.16}.login .card{padding:28px}.login button{width:100%;margin-top:10px}.login footer{font-size:12px;color:var(--muted);margin-top:25px;line-height:1.7}dialog{border:0;box-shadow:0 30px 100px #173b2b30;border-radius:16px;padding:28px;max-width:510px;width:calc(100% - 32px);color:var(--ink)}dialog::backdrop{background:#12281d55;backdrop-filter:blur(3px)}dialog .actions{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}#toast{position:fixed;bottom:24px;right:24px;background:#212e3c;color:white;padding:16px 22px;border-radius:10px;max-width:420px;display:none;z-index:100;font-size:14px;box-shadow:0 8px 30px #0002}#toast.show{display:block}.loading{padding:60px}.chartrow{display:grid;grid-template-columns:130px 1fr 32px;gap:12px;align-items:center;font-size:12px;margin:17px 0}.bar{height:10px;background:#ebeef1;border-radius:6px;overflow:hidden}.bar i{display:block;background:var(--brand);height:100%;border-radius:6px}.logo-preview{max-width:180px;max-height:65px;object-fit:contain}.fine{font-size:12px;line-height:1.7;color:var(--muted)}@media(max-width:1100px){main{padding:28px}.layout{grid-template-columns:205px 1fr}.stats{grid-template-columns:repeat(2,1fr)}.grid{grid-template-columns:1fr}.integration{grid-template-columns:1fr}}@media(max-width:720px){.layout{display:block}aside{padding:17px;border-right:0;border-bottom:1px solid var(--line);gap:15px}.brand{font-size:14px}nav{display:flex;overflow:auto;gap:3px}nav button{white-space:nowrap;font-size:12px;padding:10px}.aside-bottom{display:none}main{padding:24px 16px}h1{font-size:26px}header{gap:12px;flex-wrap:wrap}.card{padding:19px}.stats{gap:10px}.stat{padding:17px}.stat strong{font-size:28px}.login{margin:25px auto}.login-grid{grid-template-columns:1fr;gap:25px}.login h1{font-size:32px}.times{grid-template-columns:repeat(3,1fr)}.filters label{min-width:125px}.appointment{flex-wrap:wrap}.chartrow{grid-template-columns:100px 1fr 25px}}
textarea{font:inherit;resize:vertical;width:100%;border:1px solid #d5dadf;border-radius:9px;padding:12px;line-height:1.6;color:var(--ink);min-height:100px}.inbox{display:grid;grid-template-columns:280px 1fr;gap:0;padding:0;min-height:490px;overflow:hidden}.thread-list{border-right:1px solid var(--line);padding:12px}.thread-list button{display:block;text-align:left;background:white;color:var(--ink);width:100%;font-weight:500;padding:15px;margin:3px 0}.thread-list button.selected{background:#edf1f5}.thread-list small{display:block;color:var(--muted);font-size:11px;margin-top:8px;line-height:1.5}.chat{padding:24px;min-width:0}.messages{max-height:420px;overflow:auto;padding:12px 0;display:flex;flex-direction:column;gap:14px}.bubble{background:#edf0f4;padding:13px 16px;border-radius:12px;max-width:90%;align-self:flex-start;white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;line-height:1.6}.bubble.mine{background:#e5ebf1;align-self:flex-end}.bubble small{display:block;white-space:normal;font-size:10px;color:var(--muted);margin-top:7px}.chat-compose{display:grid;grid-template-columns:1fr auto;gap:10px;margin-top:15px;align-items:end}.chat-compose textarea{min-height:65px}.export{margin-left:auto}.summary-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.summary-stats div{background:#f5f7f9;padding:16px;border-radius:10px;font-size:12px;color:var(--muted)}.summary-stats b{display:block;color:var(--ink);font-size:22px;margin-bottom:5px}@media(max-width:900px){.inbox{grid-template-columns:1fr}.thread-list{display:flex;border-right:0;border-bottom:1px solid var(--line);overflow:auto;max-height:140px}.thread-list button{min-width:210px}.summary-stats{grid-template-columns:1fr 1fr}}
.attach-button{cursor:pointer;display:inline-block;padding:8px 10px;border-radius:7px;background:#eff2f5;font-size:12px;color:var(--ink)}.chat-image{display:block;max-width:100%;max-height:300px;border-radius:9px;margin:8px 0}audio{display:block;max-width:100%;height:40px;margin:8px 0}.bubble audio{width:260px}.inbox .messages:empty{min-height:100px}
.call-log{padding:15px;border:1px dashed #c9d0d8;border-radius:11px;text-align:center;font-size:13px;color:var(--brand);margin:10px 0}.call-log small{display:block;color:var(--muted);font-size:11px;line-height:1.6;margin-top:6px}.live-call{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#202f3e;color:white;box-shadow:0 14px 40px #0003;padding:17px;border-radius:14px;z-index:90;display:flex;align-items:center;gap:13px;width:min(620px,calc(100% - 30px))}.live-call small{display:block;color:#c7d2dd;font-size:12px;margin-top:5px}.call-dot{font-size:24px;background:#ffffff18;border-radius:50%;width:42px;height:42px;display:grid;place-items:center;flex-shrink:0}
/* Interfaz simplificada: superficies planas, menos peso visual y mayor espacio. */
:root{--bg:#fafbfd;--line:#e8edf3;--ink:#192738;--muted:#687587;font-size:14px}
.demo{background:#f0f4f9;color:#64748b;font-size:11px;padding:6px 14px}
.layout{grid-template-columns:210px 1fr;min-height:calc(100vh - 26px)}
aside{padding:30px 18px;border-right-color:#edf1f6;gap:36px}
.brand{font-size:13px;font-weight:650;gap:10px}.brandmark{width:30px;height:30px;border-radius:7px;font-size:19px}
nav{gap:5px}nav button{font-size:13px;padding:11px 13px;border-radius:6px;font-weight:450}nav button.active{background:#eff5fc;font-weight:600}
main{padding:44px 48px;max-width:1480px}header{margin-bottom:32px;align-items:center}
.eyebrow{display:none}h1{font-size:28px;font-weight:600;letter-spacing:-.8px;margin-bottom:9px}h2{font-size:17px;font-weight:600;letter-spacing:-.3px}h3{font-size:14px;font-weight:600}.subtitle{font-size:13px;max-width:750px;line-height:1.65}
button,.button{border-radius:6px;font-size:13px;font-weight:550;padding:10px 15px}.secondary{background:#eef3f9}.ghost{background:transparent;font-weight:450}.small{font-size:12px;padding:7px 10px}
.card{border-radius:8px;padding:24px;border-color:#e8edf3;margin-bottom:20px;box-shadow:none}.grid{gap:24px;grid-template-columns:1.2fr 1fr}
.stats{gap:0;background:white;border:1px solid var(--line);border-radius:8px;margin:24px 0 30px;padding:23px 0}.stat{border:0;border-right:1px solid var(--line);border-radius:0;padding:0 27px;background:transparent}.stat:last-child{border:0}.stat span{font-size:12px}.stat strong{font-size:29px;font-weight:550;margin:9px 0 0;line-height:1.2}.stat small{display:none}
.filters{gap:14px;margin:22px 0}.filters label{font-size:11px}input,select,textarea{border-color:#dfe6ef;border-radius:6px;font-size:13px}input,select{padding:10px 12px}
.notice{background:#f2f6fb;border-radius:6px;color:#53667f;font-size:12px;padding:14px 17px}.notice strong{font-weight:550;margin-bottom:3px}.fine{font-size:12px;line-height:1.7}.home-retention{margin-top:10px;border-top:1px solid var(--line);padding-top:17px;color:var(--muted);font-size:11px;line-height:1.7}.home-retention strong{font-weight:550}
.date-block{background:#f3f6fa;border-radius:6px;min-width:60px;padding:10px 12px}.date-block b{font-size:22px;font-weight:550}.appointment{gap:15px;padding:18px 0}.appointment:last-child{border:0}.empty{padding:32px 14px;font-size:13px}.empty-symbol{display:none}
.badge{border-radius:4px;font-size:10px;padding:5px 7px}.progress{height:4px;margin:17px 0}.date-strip{gap:8px;margin:24px 0}.date-strip button{border-radius:7px;padding:13px 6px}.date-strip b{font-size:20px;font-weight:550}.times{gap:10px}.times button{border-color:#d6e3f3;border-radius:6px;padding:14px 8px}.times small{font-size:10px;margin-top:3px}
th{background:#fafbfd;font-size:11px;font-weight:500}td{padding:17px 12px}.summary-stats{gap:12px}.summary-stats div{background:#f7f9fc;border-radius:6px}.summary-stats b{font-weight:550}
.inbox{grid-template-columns:250px 1fr;padding:0;border-radius:8px}.thread-list{padding:10px}.thread-list button{border-radius:6px;padding:14px 12px;font-size:13px;line-height:1.5}.thread-list button.selected{background:#f0f5fc}.thread-list small{font-size:10px;line-height:1.6}.chat{padding:25px 28px}.chat>.fine{font-size:10px;margin:13px 0;color:#8994a3}.messages{max-height:440px;padding:20px 0;gap:13px}.bubble{background:#f3f5f8;border-radius:9px;padding:12px 15px;font-size:13px;max-width:85%}.bubble.mine{background:#eaf2fd}.bubble small{font-size:10px;margin-top:7px;color:#8290a2}.chat-compose{border-top:1px solid var(--line);padding-top:15px}.chat-compose textarea{min-height:48px;border-color:#e4eaf2}.chat-compose button{font-size:12px}.attach-button{background:transparent;color:#64748b;font-size:12px}.call-log{border:0;background:#f8fafc;color:#64748b;border-radius:6px;font-size:11px}.call-log small{font-size:10px}.chat-image{max-height:230px}.live-call{border-radius:8px;box-shadow:0 8px 30px #14305220;background:#183653}
.aside-bottom{font-size:11px;color:#8a96a6}.aside-bottom>span{display:none}.profile{border-top-color:#edf1f6;line-height:1.8}.profile strong{font-weight:550;color:#536174}
dialog{border-radius:10px;padding:26px;box-shadow:0 24px 80px #18334d22}dialog::backdrop{background:#152b4355;backdrop-filter:blur(2px)}#toast{border-radius:7px;background:#183653;font-size:13px;box-shadow:0 8px 25px #14305220}
.login h1{font-size:37px;font-weight:550}.login .card{border-radius:9px}.login footer{font-size:11px}
@media(max-width:1100px){main{padding:32px}.layout{grid-template-columns:190px 1fr}.grid{grid-template-columns:1fr}.stats{grid-template-columns:repeat(4,1fr)}.stat{padding:0 18px}}
@media(max-width:900px){.inbox{grid-template-columns:1fr}.thread-list{border-right:0;border-bottom:1px solid var(--line);display:flex;overflow:auto;max-height:135px}.thread-list button{min-width:200px}.chat{padding:20px}}
@media(max-width:720px){.layout{display:block}aside{padding:17px 16px;gap:16px}.brand{font-size:13px}nav{gap:3px}nav button{font-size:12px;padding:9px 10px}main{padding:27px 17px}header{margin-bottom:24px}h1{font-size:25px;line-height:1.2}.subtitle{font-size:12px}.stats{grid-template-columns:repeat(2,1fr);row-gap:23px;padding:20px 0;margin:23px 0}.stat{padding:0 20px}.stat:nth-child(2){border:0}.stat strong{font-size:26px}.card{padding:20px;border-radius:7px}.inbox{padding:0}.chat{padding:18px}.filters{gap:10px}.bubble{max-width:92%}.login h1{font-size:31px}.times{grid-template-columns:repeat(3,1fr)}.home-retention{font-size:10px}}