/* OBRES ai — design system */
:root{
  --bg:#0a0f1f; --bg2:#0f1730; --card:#121b34; --border:#1c2748;
  --fg:#eef2ff; --muted:#8893b8; --primary:#3b82f6; --primary-2:#6366f1;
  --accent:#22d3ee; --secondary:#a855f7; --danger:#ef4444; --ok:#10b981; --warn:#f59e0b;
  --radius:12px; --shadow:0 10px 30px -10px rgba(59,130,246,.35);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--fg);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent)}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2rem,5vw,3.5rem);line-height:1.1}
h2{font-size:clamp(1.6rem,3.5vw,2.4rem)}
h3{font-size:1.3rem}
p{margin:0 0 1em;color:#cbd5e1}
.muted{color:var(--muted)}
.container{max-width:1200px;margin:0 auto;padding:0 1.25rem}
.section{padding:5rem 0}
.grid{display:grid;gap:1.25rem}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.grid-4{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}

/* nav */
.site-header{position:sticky;top:0;z-index:50;background:rgba(10,15,31,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;gap:1rem}
.brand{font-weight:900;font-size:1.4rem;letter-spacing:-.04em}
.brand span{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;gap:1.5rem;flex:1;justify-content:center}
.nav-links a{font-weight:500;font-size:.95rem}
.nav-cta{display:flex;gap:.5rem}
.nav-toggle{display:none;background:none;border:0;color:var(--fg);font-size:1.5rem;cursor:pointer}
@media(max-width:860px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:block}
  body.nav-open .nav-links,body.nav-open .nav-cta{display:flex;position:absolute;top:100%;left:0;right:0;background:var(--bg2);flex-direction:column;padding:1rem;border-bottom:1px solid var(--border)}
  body.nav-open .nav-cta{top:auto}
}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.65rem 1.1rem;border-radius:var(--radius);font-weight:600;font-size:.95rem;border:1px solid transparent;cursor:pointer;transition:transform .15s,box-shadow .2s,background .2s;text-decoration:none}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{color:#fff}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--fg)}
.btn-ghost:hover{background:var(--card);color:var(--fg)}
.btn-danger{background:var(--danger);color:#fff}
.btn-ok{background:var(--ok);color:#fff}
.btn-lg{padding:1rem 1.6rem;font-size:1.05rem}
.btn-block{display:flex;justify-content:center;width:100%}

/* cards */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem}
.card h3{margin-top:0}
.feature-card{background:linear-gradient(180deg,var(--card),var(--bg2));border:1px solid var(--border);border-radius:var(--radius);padding:1.75rem;transition:transform .2s,border-color .2s}
.feature-card:hover{transform:translateY(-4px);border-color:var(--primary)}
.feature-icon{font-size:2rem;margin-bottom:.75rem}

/* hero */
.hero{position:relative;padding:6rem 0 5rem;overflow:hidden;text-align:center}
.hero::before,.hero::after{content:'';position:absolute;width:400px;height:400px;border-radius:50%;filter:blur(120px);opacity:.4;z-index:0}
.hero::before{background:var(--primary);top:-100px;left:-100px}
.hero::after{background:var(--accent);bottom:-100px;right:-100px}
.hero>*{position:relative;z-index:1}
.hero .lead{font-size:1.2rem;color:#cbd5e1;max-width:680px;margin:1rem auto 2rem}
.hero .actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}

/* forms */
.form{display:flex;flex-direction:column;gap:1rem;max-width:520px;margin:0 auto}
.form label{display:block;font-weight:600;margin-bottom:.35rem;font-size:.9rem}
.form input,.form select,.form textarea{width:100%;padding:.75rem 1rem;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);color:var(--fg);font:inherit}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(59,130,246,.2)}
.form textarea{min-height:120px;resize:vertical}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
@media(max-width:560px){.form .row{grid-template-columns:1fr}}
.form-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;max-width:480px;margin:0 auto}
.alert{padding:.85rem 1rem;border-radius:var(--radius);margin-bottom:1rem;border:1px solid}
.alert-error{background:rgba(239,68,68,.1);border-color:var(--danger);color:#fecaca}
.alert-ok{background:rgba(16,185,129,.1);border-color:var(--ok);color:#a7f3d0}
.alert-success{background:rgba(16,185,129,.1);border-color:var(--ok);color:#a7f3d0}
.alert-warn{background:rgba(245,158,11,.12);border-color:#f59e0b;color:#fde68a}
.alert-info{background:rgba(59,130,246,.12);border-color:#3b82f6;color:#bfdbfe}

/* badges */
.badge{display:inline-block;padding:.2rem .6rem;border-radius:999px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em}
.badge-ok{background:rgba(16,185,129,.15);color:#34d399}
.badge-warn{background:rgba(245,158,11,.15);color:#fbbf24}
.badge-bad{background:rgba(239,68,68,.15);color:#f87171}
.badge-info{background:rgba(59,130,246,.15);color:#60a5fa}
.badge-muted{background:rgba(148,163,184,.15);color:#cbd5e1}

/* table */
.table{width:100%;border-collapse:collapse;background:var(--card);border-radius:var(--radius);overflow:hidden}
.table th,.table td{padding:.85rem 1rem;text-align:left;border-bottom:1px solid var(--border);font-size:.9rem}
.table th{background:var(--bg2);font-weight:600;color:var(--muted);text-transform:uppercase;font-size:.75rem;letter-spacing:.05em}
.table tr:last-child td{border-bottom:0}
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border)}

/* stat cards */
.stat{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem}
.stat .label{color:var(--muted);font-size:.85rem;text-transform:uppercase;letter-spacing:.05em}
.stat .value{font-size:2rem;font-weight:800;margin-top:.5rem;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}

/* footer */
.site-footer{margin-top:5rem;border-top:1px solid var(--border);background:var(--bg2);padding:3rem 0 1rem}
.footer-grid{display:grid;gap:2rem;grid-template-columns:1.5fr repeat(3,1fr);margin-bottom:2rem}
@media(max-width:860px){.footer-grid{grid-template-columns:1fr 1fr}}
.footer-grid h4{margin-bottom:.75rem;font-size:.95rem}
.footer-grid a{display:block;color:var(--muted);font-size:.9rem;padding:.2rem 0}
.footer-grid a:hover{color:var(--accent)}
.copyright{border-top:1px solid var(--border);padding-top:1rem;color:var(--muted);font-size:.85rem;text-align:center}

/* admin */
.admin-body{display:flex;min-height:100vh;background:var(--bg)}
.admin-sidebar{width:240px;background:var(--bg2);border-right:1px solid var(--border);padding:1.5rem 1rem;flex-shrink:0}
.admin-sidebar .brand{margin-bottom:2rem;display:block}
.admin-sidebar nav{display:flex;flex-direction:column;gap:.25rem}
.admin-sidebar nav a{padding:.6rem .85rem;border-radius:8px;font-size:.9rem;color:var(--muted)}
.admin-sidebar nav a:hover{background:var(--card);color:var(--fg)}
.admin-main{flex:1;padding:2rem;overflow-x:auto}
@media(max-width:860px){.admin-body{flex-direction:column}.admin-sidebar{width:100%}}

/* AI chat widget */
.ai-chat{position:fixed;bottom:1.25rem;right:1.25rem;z-index:60}
.ai-toggle{display:inline-flex;align-items:center;gap:.5rem;padding:0 1.1rem;height:52px;border-radius:30px;border:0;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-size:1rem;font-weight:600;cursor:pointer;box-shadow:var(--shadow)}
.ai-toggle-label{font-size:.95rem}
.ai-panel{position:absolute;bottom:70px;right:0;width:360px;max-width:calc(100vw - 2rem);height:520px;max-height:calc(100vh - 6rem);background:var(--card);border:1px solid var(--border);border-radius:var(--radius);display:flex;flex-direction:column;box-shadow:var(--shadow);overflow:hidden}
.ai-head{padding:.85rem 1rem;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff}
.ai-head strong{color:#fff}
.ai-head button{background:none;border:0;color:#fff;font-size:1.5rem;cursor:pointer;line-height:1}
.ai-log{flex:1;overflow-y:auto;padding:1rem;font-size:.92rem;display:flex;flex-direction:column;gap:.5rem}
.ai-log .msg{padding:.6rem .85rem;border-radius:12px;max-width:88%;word-wrap:break-word;line-height:1.45}
.ai-log .msg.user{background:var(--primary);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.ai-log .msg.bot{background:var(--bg2);color:var(--fg);align-self:flex-start;border-bottom-left-radius:4px}
.ai-log .msg a{color:inherit;text-decoration:underline}
.ai-suggest{display:flex;flex-wrap:wrap;gap:.35rem;padding:.5rem .75rem;border-top:1px solid var(--border);background:var(--bg2)}
.ai-suggest button{background:var(--card);border:1px solid var(--border);color:var(--fg);padding:.3rem .65rem;border-radius:999px;font-size:.78rem;cursor:pointer}
.ai-suggest button:hover{border-color:var(--primary);color:var(--primary)}
.ai-form{display:flex;gap:.5rem;padding:.75rem;border-top:1px solid var(--border)}
.ai-form input{flex:1;min-width:0;padding:.65rem .85rem;background:var(--bg2);border:1px solid var(--border);border-radius:10px;color:var(--fg);font:inherit}
.ai-form button{padding:.65rem 1.1rem;background:var(--primary);color:#fff;border:0;border-radius:10px;cursor:pointer;font-weight:600}
@media (max-width:520px){
  .ai-chat{bottom:.75rem;right:.75rem;left:.75rem}
  .ai-toggle{position:absolute;right:0;bottom:0}
  .ai-toggle-label{display:none}
  .ai-toggle{width:56px;height:56px;border-radius:50%;padding:0;justify-content:center;font-size:1.4rem}
  .ai-panel{position:fixed;inset:0;width:100%;max-width:100%;height:100%;max-height:100%;border-radius:0;border:0}
}
body.ai-open{overflow:hidden}

/* misc */
.center{text-align:center}
.tag{display:inline-block;background:rgba(59,130,246,.12);color:var(--accent);padding:.25rem .7rem;border-radius:999px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em}
.divider{height:1px;background:var(--border);margin:2rem 0}
hr{border:0;border-top:1px solid var(--border);margin:2rem 0}

/* Logo in nav / brand */
.brand{display:inline-flex;align-items:center;gap:.5rem}
.brand-logo{display:inline-block;vertical-align:middle;width:32px;height:32px;object-fit:contain;filter:drop-shadow(0 2px 6px rgba(59,130,246,.4))}
.admin-sidebar .brand-logo{width:28px;height:28px}
img{max-width:100%;height:auto}

/* Registration form helpers */
.form .form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1rem}
@media(max-width:560px){.form .form-row{grid-template-columns:1fr}}
.form > div{margin-bottom:1rem}
.form small.muted{display:block;margin-top:.25rem;font-size:.8rem}
.form .checkbox-row{display:flex;align-items:flex-start;gap:.6rem;font-weight:400;font-size:.9rem;margin:.75rem 0}
.form .checkbox-row input[type=checkbox]{width:auto;margin-top:.2rem;flex-shrink:0}
.form .checkbox-row a{color:var(--primary);text-decoration:underline}