*{box-sizing:border-box}
body{margin:0;font-family:Segoe UI,Arial,sans-serif;background:#f4f7fb;color:#071b46}
a{color:#ff6b00;font-weight:800;text-decoration:none}
.badge{display:inline-block;background:#ff6b00;color:white;border-radius:999px;padding:7px 12px;font-size:12px;font-weight:900;letter-spacing:.08em}
.badge.center{margin-bottom:12px}
.landing{min-height:100vh;background:linear-gradient(135deg,#071b46,#123b86);padding:28px;display:grid;place-items:center}
.landing-card{max-width:1040px;background:white;border-radius:30px;padding:46px;box-shadow:0 24px 70px rgba(0,0,0,.28)}
.landing h1{font-size:52px;line-height:1;margin:16px 0 8px;color:#071b46}
.landing h2{font-size:27px;margin:0 0 14px;color:#ff6b00}
.landing p{color:#64708a;font-size:17px}
.landing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:28px 0}
.mini-card{background:#f5f7fb;border-radius:18px;padding:22px;border-top:4px solid #ff6b00}
.mini-card .ico{font-size:34px;margin-bottom:8px}
.mini-card h3{margin:0 0 8px;color:#071b46}
.landing-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px}
.btn-main,.btn-alt{display:inline-flex;justify-content:center;align-items:center;padding:14px 22px;border-radius:12px;font-weight:900;text-decoration:none}
.btn-main{background:#ff6b00;color:white}
.btn-alt{background:#071b46;color:white}
.auth{min-height:100vh;display:grid;place-items:center;padding:20px;background:linear-gradient(135deg,#071b46,#123b86)}
.auth-page{min-height:100vh;display:grid;grid-template-columns:1fr 520px;background:#f4f7fb}
.auth-info{background:linear-gradient(135deg,#071b46,#123b86);color:white;padding:60px;display:flex;flex-direction:column;justify-content:center}
.auth-info h1{font-size:46px;line-height:1;margin:18px 0 12px}
.auth-info p{color:#dbe7ff;font-size:18px}
.normas-box{background:rgba(7,27,70,.06);border:1px solid rgba(7,27,70,.12);border-radius:22px;padding:24px;margin-top:28px}
.auth-info .normas-box{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18)}
.card{width:100%;max-width:460px;background:white;border-radius:24px;padding:32px;box-shadow:0 20px 55px rgba(0,0,0,.20)}
.register-card{align-self:center;justify-self:center;margin:28px;max-height:calc(100vh - 56px);overflow:auto}
.card h1,.card h2{margin:0 0 8px;font-size:30px;color:#071b46}
.card p{color:#64708a}
label{display:block;margin:14px 0 6px;font-weight:800}
input,select{width:100%;padding:14px;border:1px solid #dce3ef;border-radius:12px;font-size:16px;background:white}
.check{display:flex;gap:10px;align-items:flex-start;font-weight:600;color:#27324d}
.check input{width:auto;margin-top:4px}
button{background:#ff6b00;color:white;border:0;border-radius:12px;padding:14px 20px;font-weight:900;font-size:16px;cursor:pointer;margin-top:16px;width:100%}
.error{background:#fee2e2;color:#991b1b;padding:12px;border-radius:12px;margin:14px 0}
.small{font-size:14px;text-align:center}
.ok-card{max-width:620px}
.ok-box{background:#f5f7fb;border-left:5px solid #ff6b00;border-radius:16px;padding:18px;margin:16px 0}
.full{width:100%;margin-top:10px;text-align:center}
.chat-layout{height:100vh;display:grid;grid-template-columns:295px 1fr;background:#eef3fb}
.sidebar{background:#071b46;color:white;padding:24px;display:flex;flex-direction:column}
.sidebar h2{margin:0;font-size:26px}
.sidebar p{color:#dbe7ff;margin-top:4px}
.profile{background:rgba(255,255,255,.10);border-radius:18px;padding:18px;margin:22px 0}
.profile strong,.profile span,.profile small{display:block}
.profile span{color:#ffcfad;margin-top:5px}
.profile small{color:#dbe7ff;margin-top:5px}
.sala{display:block;width:100%;text-align:left;padding:12px 14px;border-radius:12px;margin-bottom:8px;background:rgba(255,255,255,.08);font-weight:800;color:white;border:0;cursor:pointer}
.sala.active{background:#ff6b00}
.logout,.admin-link{margin-top:10px;background:#ff6b00;color:white;text-align:center;border-radius:12px;padding:12px;display:block}
.admin-link{background:rgba(255,255,255,.12);margin-top:auto}
.chat-panel{height:100vh;display:flex;flex-direction:column;padding:20px}
.chat-top{background:white;border-radius:20px;padding:18px 22px;box-shadow:0 12px 30px rgba(7,27,70,.10)}
.chat-top h1{margin:0}
.chat-top p{margin:4px 0 0;color:#64708a}
.notice{background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;border-radius:16px;padding:14px 18px;margin:14px 0;font-size:14px}
.mensajes{flex:1;overflow:auto;background:white;border-radius:20px;padding:18px;box-shadow:0 12px 30px rgba(7,27,70,.10)}
.msg{padding:12px 14px;border-bottom:1px solid #e6eaf2}
.msg-head{display:flex;justify-content:space-between;gap:12px;margin-bottom:6px}
.msg-head strong{color:#071b46}
.msg-head small{color:#8a94aa}
.msg-text{color:#27324d;white-space:pre-wrap}
.chat-form{display:flex;gap:10px;background:white;border-radius:18px;padding:12px;margin-top:14px;box-shadow:0 12px 30px rgba(7,27,70,.10)}
.chat-form input{margin:0}
.chat-form button{margin:0;min-width:110px;width:auto}
.admin-wrap{padding:24px}
.table-wrap{overflow:auto;background:white;border-radius:18px;box-shadow:0 12px 30px rgba(7,27,70,.10)}
table{width:100%;border-collapse:collapse;min-width:1000px}
th{background:#071b46;color:white;text-align:left;padding:12px}
td{padding:12px;border-bottom:1px solid #e6eaf2;color:#27324d}
.ok{background:#dcfce7;color:#166534;padding:5px 9px;border-radius:999px;font-weight:900}
.pending{background:#fef3c7;color:#92400e;padding:5px 9px;border-radius:999px;font-weight:900}
.action{display:inline-block;background:#071b46;color:white!important;border-radius:8px;padding:7px 10px;margin:2px;font-size:13px}
.action.danger{background:#991b1b}
@media(max-width:900px){
.landing h1{font-size:36px}.landing-card{padding:28px}.landing-grid{grid-template-columns:1fr}
.auth-page{grid-template-columns:1fr}.auth-info{padding:34px}.auth-info h1{font-size:34px}.register-card{max-height:none}
.chat-layout{grid-template-columns:1fr;height:auto}.sidebar{display:block;height:auto}.salas{display:grid;grid-template-columns:1fr 1fr;gap:8px}.sala{margin:0}.chat-panel{height:auto;min-height:calc(100vh - 250px)}
}
@media(max-width:650px){
.landing-actions{flex-direction:column}.btn-main,.btn-alt{width:100%}.chat-form{flex-direction:column}.chat-form button{width:100%}.salas{grid-template-columns:1fr}
}

.fallback-links{
  margin-top:24px;
  padding:18px;
  background:#fff7ed;
  border:1px solid #fed7aa;
  border-radius:14px;
}
.fallback-links a{
  display:block;
  margin:8px 0;
  color:#071b46;
  font-weight:900;
}