:root{
  --bg: #0a0a0f;
  --panel: rgba(255,255,255,0.03);
  --text: #e6eef6;
  --muted: #9aa4b2;
  --accent-1: #10b981;
  --accent-2: #6366f1;
  --gradient: linear-gradient(90deg,var(--accent-1),var(--accent-2));
  --radius: 12px;
  --container: 1100px;
}

[data-theme="light"]{
  --bg: #ffffff;
  --panel: #f6f7fb;
  --text: #0b1220;
  --muted: #8792a1;
}

*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,Segoe UI,Roboto,'Helvetica Neue',Arial; background:var(--bg); color:var(--text); -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale}
.container{max-width:var(--container); margin:0 auto; padding:20px}
/* Header */
.site-header{ padding:12px 0; color:var(--text); box-shadow: 0 6px 30px rgba(9,10,20,0.6); }
.site-header .container{ display:flex; align-items:center; justify-content:space-between; gap:12px; }
.logo-wrap{ display:flex; align-items:center; gap:12px; }
.logo-img, .inline-logo{ height:36px; width:auto; display:block; }
.logo-text{ font-weight:700; font-size:18px; color:var(--text); text-decoration:none; }
.nav{ display:flex; gap:12px; align-items:center; }
.nav a{ color:var(--text); text-decoration:none; font-weight:600; font-size:14px; }
/* Small nav utility */
.header-actions{ display:flex; gap:8px; align-items:center; }

/* Main panel/card */
.card{ background:var(--panel); padding:20px; border-radius:var(--radius); box-shadow: 0 4px 18px rgba(2,6,23,0.6); margin:16px 0}
h1{margin-top:0}
.form label{display:block; margin:8px 0}
.form input, .form select, .form textarea{width:100%; padding:8px; border-radius:8px; border:1px solid rgba(255,255,255,0.04); background:transparent; color:var(--text)}
.grid-2{display:grid; grid-template-columns:repeat(2,1fr); gap:12px}
.grid-3{display:grid; grid-template-columns:1fr 160px 80px; gap:12px}
.actions{margin-top:12px}
.btn{display:inline-block; padding:8px 14px; border-radius:8px; background:transparent; color:var(--text); text-decoration:none; border:1px solid rgba(255,255,255,0.06)}
.btn-primary{background:var(--gradient); color:#fff; border:none; padding:10px 16px; border-radius:10px; box-shadow: 0 6px 20px rgba(99,102,241,0.18)}

.site-footer{ padding:20px; color:var(--text); font-size:14px; text-align:center; margin-top:20px; }
.site-footer .inner{ max-width:var(--container); margin:0 auto; padding:24px; border-radius:12px; background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01)); display:flex; align-items:center; justify-content:space-between; gap:12px; }
/* Footer gradient mirror of header but darker */
.site-footer .brand{ display:flex; align-items:center; gap:12px; }
.footer-gradient{ background: linear-gradient(90deg, rgba(16,185,129,0.12), rgba(99,102,241,0.12)); padding:18px; border-radius:12px; width:100%; display:flex; align-items:center; justify-content:space-between; gap:12px; }

.footer-links{ display:flex; gap:14px; align-items:center; color:var(--muted); }
.footer-links a{ color:var(--muted); text-decoration:none; font-size:13px; }

/* Mobile nav & hamburger */
.hamburger{ display:none; background:transparent; border:0; padding:10px; cursor:pointer; }
.hamburger-box{ width:28px; height:18px; display:inline-block; position:relative; }
.hamburger-inner, .hamburger-inner::before, .hamburger-inner::after{ width:28px; height:2px; background:rgba(255,255,255,0.95); display:block; position:absolute; left:0; border-radius:2px; transition: transform 200ms ease, opacity 200ms ease; }
.hamburger-inner{ top:50%; transform:translateY(-50%); }
.hamburger-inner::before{ content:''; top:-8px; }
.hamburger-inner::after{ content:''; top:8px; }

.hamburger[aria-expanded="true"] .hamburger-inner{ transform: rotate(45deg); }
.hamburger[aria-expanded="true"] .hamburger-inner::before{ transform: rotate(90deg); top:0; opacity:0; }
.hamburger[aria-expanded="true"] .hamburger-inner::after{ transform: rotate(90deg); top:0; }

.mobile-nav{ display:none; background:var(--panel); box-shadow: 0 18px 60px rgba(2,6,23,0.6); }
.mobile-nav.open{ display:block; position:relative; }
.mobile-nav-inner{ padding:12px 20px; display:flex; flex-direction:column; gap:8px; }
.mobile-link{ padding:10px; border-radius:8px; text-decoration:none; color:var(--text); font-weight:600; }

@media (max-width:900px){
  .container{ padding:12px }
  .grid-2, .grid-3{ grid-template-columns:1fr; }
  .site-header .container{ flex-direction:column; align-items:flex-start; gap:8px }
  .site-footer .inner{ flex-direction:column; align-items:flex-start; gap:12px }
  .nav{ display:none } /* mobile simplified header */
  .hamburger{ display:block }
  .mobile-nav{ display:block }
}