/*
 * Pfad:   /assets/css/admin.css
 * Zweck:  Zentrales Stylesheet (System-Schriften, DSGVO-konform).
 *         Modernes, klares Admin-Layout mit responsiver 3D-Kacheloptik.
 */

:root{
  --bg:#eef1f6;
  --panel:#ffffff;
  --text:#0f172a;
  --muted:#64748b;
  --border:#e2e8f0;
  --border-strong:#cbd5e1;
  --primary:#4f46e5;
  --primary-600:#4338ca;
  --primary-50:#eef2ff;
  --accent:#8b5cf6;
  --success-bg:#ecfdf5; --success-bd:#a7f3d0; --success-fg:#065f46;
  --danger-bg:#fef2f2;  --danger-bd:#fecaca;  --danger-fg:#991b1b;
  --info-bg:#eff6ff;    --info-bd:#bfdbfe;    --info-fg:#1e40af;
  --radius:12px;
  --radius-lg:16px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.05);
  --shadow:0 2px 4px rgba(15,23,42,.05),0 8px 24px rgba(15,23,42,.07);
  --shadow-lg:0 8px 20px rgba(15,23,42,.08),0 24px 56px rgba(79,70,229,.14);
  --focus:0 0 0 3px rgba(79,70,229,.25);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.55;color:var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, #e0e7ff 0%, transparent 60%),
    radial-gradient(900px 500px at 110% 10%, #fae8ff 0%, transparent 55%),
    linear-gradient(180deg,#eef1f6,#f5f6fa) fixed;
}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.muted{color:var(--muted)}
h1{font-size:26px;margin:0 0 6px;letter-spacing:-.01em}
h2{font-size:20px;margin:0 0 8px}
h3{font-size:17px;margin:0 0 6px}

/* Topbar */
.topbar{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;gap:14px;
  padding:12px 20px;
  background:rgba(255,255,255,.85);
  backdrop-filter:saturate(1.2) blur(10px);
  -webkit-backdrop-filter:saturate(1.2) blur(10px);
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-sm);
}
.brand a{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:700;color:var(--text);font-size:17px;
}
.brand a::before{
  content:"";display:inline-block;width:26px;height:26px;border-radius:8px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 4px 10px rgba(79,70,229,.35),inset 0 1px 0 rgba(255,255,255,.5);
}
.context-badge{
  padding:7px 12px;font-size:13px;
  background:var(--primary-50);color:var(--primary-600);
  border-radius:999px;border:1px solid #c7d2fe;
}
.user-box{margin-left:auto;display:flex;align-items:center;gap:12px;font-size:14px;color:var(--muted)}

/* Shell */
.app{display:grid;grid-template-columns:248px 1fr;min-height:calc(100vh - 58px)}
.sidebar{
  background:rgba(255,255,255,.7);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  border-right:1px solid var(--border);padding:16px 0;
}
.side-label{
  padding:8px 20px 4px;font-size:11px;text-transform:uppercase;
  letter-spacing:.08em;color:var(--muted);font-weight:600;
}
.sidebar nav{display:flex;flex-direction:column;gap:2px;padding:4px 10px}
.sidebar nav a{display:block;padding:10px 14px;border-radius:10px;color:var(--text);font-weight:500}
.sidebar nav a:hover{background:#f1f5f9;text-decoration:none}
.sidebar nav a.active{
  background:linear-gradient(180deg,#eef2ff,#e0e7ff);
  color:var(--primary-600);
  box-shadow:inset 0 0 0 1px #c7d2fe,0 1px 2px rgba(79,70,229,.10);
}

.content{padding:28px;max-width:1400px}

/* Card */
.card{
  background:var(--panel);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow);
}

/* Site-Kacheln (3D) */
.site-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:20px;margin-top:18px;
}
.site-card{
  --tile-color:var(--primary);
  position:relative;display:block;
  background:#fff;border-radius:var(--radius-lg);padding:22px;
  color:var(--text);border:1px solid rgba(15,23,42,.05);
  box-shadow:
    0 1px 2px rgba(15,23,42,.05),
    0 6px 14px rgba(15,23,42,.06),
    0 18px 40px rgba(15,23,42,.06);
  transition:transform .18s ease,box-shadow .18s ease;
  overflow:hidden;isolation:isolate;
}
.site-card::before{
  content:"";position:absolute;inset:0 0 auto 0;height:6px;
  background:linear-gradient(90deg,var(--tile-color),var(--accent));
}
.site-card::after{
  content:"→";position:absolute;right:18px;bottom:16px;
  width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--primary-50);color:var(--primary-600);
  font-size:18px;font-weight:700;
  transition:transform .18s ease,background .18s ease,color .18s ease;
}
.site-card:hover{
  transform:translateY(-4px);text-decoration:none;
  box-shadow:
    0 4px 8px rgba(15,23,42,.07),
    0 14px 28px rgba(15,23,42,.08),
    0 28px 64px rgba(79,70,229,.16);
}
.site-card:hover::after{background:var(--primary);color:#fff;transform:translateX(3px)}
.site-card:nth-child(5n+1){--tile-color:#4f46e5}
.site-card:nth-child(5n+2){--tile-color:#0891b2}
.site-card:nth-child(5n+3){--tile-color:#db2777}
.site-card:nth-child(5n+4){--tile-color:#059669}
.site-card:nth-child(5n+5){--tile-color:#d97706}
.site-card-title{font-size:18px;font-weight:700;margin:4px 0 2px}
.site-card-domain{font-size:13px;color:var(--muted);margin-bottom:10px}
.site-card-desc{font-size:14px;color:#334155;padding-right:40px}

/* Placeholder */
.placeholder{
  margin-top:20px;padding:24px;
  background:rgba(255,255,255,.7);
  border:1px dashed var(--border-strong);
  border-radius:var(--radius);color:var(--muted);
}

/* Forms */
form label{display:block;margin:14px 0;font-size:14px;color:#334155;font-weight:500}
form input[type=text],
form input[type=email],
form input[type=password],
form input[type=url],
form input[type=number],
form textarea,
form select{
  display:block;width:100%;margin-top:6px;
  padding:12px 14px;font:inherit;color:inherit;background:#fff;
  border:1px solid var(--border-strong);border-radius:10px;
  transition:border-color .15s,box-shadow .15s;
}
form input:focus,form textarea:focus,form select:focus{
  outline:none;border-color:var(--primary);box-shadow:var(--focus);
}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:11px 18px;border:1px solid transparent;border-radius:10px;
  background:#e2e8f0;color:var(--text);font:inherit;font-weight:600;
  cursor:pointer;text-decoration:none;
  transition:transform .12s,box-shadow .15s,background .15s;
}
.btn:hover{text-decoration:none}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:linear-gradient(180deg,#6366f1,#4f46e5);color:#fff;
  box-shadow:
    0 2px 4px rgba(79,70,229,.25),
    0 6px 14px rgba(79,70,229,.30),
    inset 0 1px 0 rgba(255,255,255,.2);
}
.btn-primary:hover{
  background:linear-gradient(180deg,#4f46e5,#4338ca);
  box-shadow:
    0 3px 6px rgba(79,70,229,.30),
    0 10px 20px rgba(79,70,229,.35),
    inset 0 1px 0 rgba(255,255,255,.2);
}
.btn-ghost{background:transparent;border-color:var(--border-strong);color:var(--text)}
.btn-ghost:hover{background:#f1f5f9}
.btn-block{width:100%}

/* Flash */
.flash{
  padding:12px 14px;margin-bottom:14px;border-radius:10px;
  border:1px solid var(--border);background:#fff;font-size:14px;
}
.flash-error{background:var(--danger-bg);border-color:var(--danger-bd);color:var(--danger-fg)}
.flash-success{background:var(--success-bg);border-color:var(--success-bd);color:var(--success-fg)}
.flash-info{background:var(--info-bg);border-color:var(--info-bd);color:var(--info-fg)}

/* Auth */
.auth-body{
  min-height:100vh;display:flex;align-items:center;justify-content:center;
  padding:20px;
  background:
    radial-gradient(1000px 500px at 10% 0%, #e0e7ff 0%, transparent 55%),
    radial-gradient(800px 500px at 90% 100%, #fce7f3 0%, transparent 55%),
    linear-gradient(180deg,#eef1f6,#f5f6fa);
}
.auth-wrap{width:100%;max-width:420px}
.auth-card{
  padding:28px;border-radius:18px;position:relative;overflow:hidden;
  box-shadow:
    0 1px 2px rgba(15,23,42,.06),
    0 12px 30px rgba(15,23,42,.08),
    0 30px 70px rgba(79,70,229,.18);
}
.auth-card::before{
  content:"";position:absolute;inset:0 0 auto 0;height:6px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
}
.auth-card h1{margin-top:6px;font-size:24px}
.auth-logo{
  width:48px;height:48px;border-radius:14px;margin-bottom:10px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 8px 20px rgba(79,70,229,.35),inset 0 1px 0 rgba(255,255,255,.5);
  display:grid;place-items:center;color:#fff;font-weight:800;
  font-size:22px;letter-spacing:-.02em;
}

/* Responsive */
@media (max-width:860px){
  .app{grid-template-columns:1fr}
  .sidebar{border-right:0;border-bottom:1px solid var(--border);padding:8px}
  .sidebar nav{flex-direction:row;overflow-x:auto;gap:4px;padding:4px}
  .sidebar nav a{white-space:nowrap;padding:8px 12px}
  .side-label,.context-badge{display:none}
  .content{padding:20px 16px}
  h1{font-size:22px}
}
@media (max-width:420px){
  .user-box span{display:none}
  .site-grid{gap:14px}
}