/* Variables y base */
:root{
  --brand:#497c83; --brand-dark:#365d62; --bg:#f5f5f5; --text:#222; --muted:#666;
  --white:#fff; --danger:#c0392b; --success:#2ecc71; --warning:#f39c12; --info:#2980b9; --secondary:#7f8c8d; --border:#e6e8eb;
}
*{box-sizing:border-box} body{font-family:Arial,Helvetica,sans-serif;margin:0}

/* Login */
body:not(.body-admin){
  background: linear-gradient(135deg, var(--brand), #2c3e50);
  display:flex;align-items:center;justify-content:center;height:100vh;
}
.login-container{display:flex;justify-content:center;align-items:center;width:100%}
.login-card{background:#fff;padding:40px 30px;border-radius:12px;box-shadow:0 6px 20px rgba(0,0,0,.2);text-align:center;width:350px}
.login-card h2{margin-bottom:24px;color:var(--brand)}
.alert{background:#ffe9e9;color:#b30000;border:1px solid #ffb3b3;padding:10px;border-radius:6px;margin-bottom:12px;text-align:left;font-size:14px}
.alert.ok{background:#e8fff1;color:#0f6a2f;border:1px solid #b8efcf}
.form-group{text-align:left;margin-bottom:14px}
label{font-size:14px;color:#333}
input,select,textarea{width:100%;padding:10px;margin-top:5px;border:1px solid #ccc;border-radius:6px;font-size:14px}
textarea{min-height:110px;resize:vertical}
button,.btn{display:inline-block;padding:10px 14px;border:none;border-radius:8px;color:#fff;font-weight:bold;cursor:pointer;text-decoration:none;transition:.2s}
button:hover,.btn:hover{filter:brightness(.95)}
.btn{background:var(--brand)}
.btn.primary{background:var(--brand)}
.btn.success{background:var(--success)}
.btn.danger{background:var(--danger)}
.btn.warning{background:var(--warning)}
.btn.info{background:var(--info)}
.btn.secondary{background:var(--secondary)}
.btn.outline{background:transparent;color:var(--brand);border:1px solid var(--brand)}
.btn.sm{padding:6px 10px;font-size:12px;border-radius:6px}
.link{color:var(--brand);text-decoration:none} .link:hover{text-decoration:underline}

/* Admin layout */
.body-admin{background:var(--bg)}
.app-header{position:sticky;top:0;display:flex;align-items:center;gap:16px;padding:12px 18px;background:#20323a;color:#fff;box-shadow:0 2px 8px rgba(0,0,0,.15);z-index:10}
.app-header .brand{font-weight:bold}
.app-header .nav{display:flex;align-items:center;gap:14px;width:100%}
.app-header a{color:#fff;text-decoration:none;opacity:.9} .app-header a:hover{opacity:1}
.app-header .spacer{flex:1} .app-header .user{opacity:.85}
.container{max-width:1200px;margin:26px auto;padding:0 16px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}
.card{background:#fff;border-radius:12px;box-shadow:0 6px 18px rgba(0,0,0,.08);padding:18px}
.card h3{margin-top:0;margin-bottom:8px}
.card p{color:var(--muted);margin:0 0 16px}

/* Tables */
.table-wrap{background:#fff;border-radius:12px;box-shadow:0 6px 18px rgba(0,0,0,.08);overflow:auto}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:10px;border-bottom:1px solid #eee;text-align:left;font-size:14px}
.table thead th{background:#fafafa;font-weight:600}
.table tbody tr:hover{background:#fcfcfc}
.actions{display:flex;gap:8px;flex-wrap:wrap}

/* Filtros + paginación */
.filters{background:#fff;border-radius:12px;box-shadow:0 6px 18px rgba(0,0,0,.08);padding:12px;margin-bottom:12px;display:grid;grid-template-columns:repeat(6,1fr);gap:10px}
.filters .form-group{margin:0}
.pagination{display:flex;gap:6px;justify-content:flex-end;margin-top:10px}
.page-link{padding:6px 10px;border-radius:6px;border:1px solid var(--border);background:#fff;color:#333;text-decoration:none}
.page-link.active{background:var(--brand);color:#fff;border-color:transparent}

/* Chat tickets */
.chat{background:#fff;border:1px solid var(--border);border-radius:12px;padding:12px;box-shadow:0 6px 18px rgba(0,0,0,.06)}
.msg{max-width:70%;padding:10px 12px;border-radius:14px;margin:6px 0;line-height:1.3}
.msg.user{background:#eef6ff;border:1px solid #d5e6ff;align-self:flex-start}
.msg.admin{background:#e8fff1;border:1px solid #b8efcf;align-self:flex-end}
.chat-box{display:flex;flex-direction:column;gap:6px}
.chat-form{margin-top:12px;display:flex;gap:8px}
.chat-form textarea{flex:1}
.form-card{background:#fff;border-radius:12px;box-shadow:0 6px 18px rgba(0,0,0,.08);padding:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.form-actions{display:flex;gap:10px;margin-top:10px}
@media(max-width:900px){.filters{grid-template-columns:repeat(2,1fr)}}