:root{
  --bg:#0f172a;--bg2:#1e293b;--panel:#ffffff;--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;
  --brand:#1d4ed8;--brand2:#2563eb;--ok:#0ea5e9;--err:#ef4444;--warn:#0284c7;--soft:#f1f5f9;
  --shadow:0 10px 30px -12px rgba(2,6,23,.25);--radius:16px;
}
*{box-sizing:border-box}
body{margin:0;font-family:'Inter',system-ui,Segoe UI,Roboto,sans-serif;background:#f8fafc;color:var(--ink);font-size:14px}
a{text-decoration:none;color:inherit}
svg{width:18px;height:18px;flex:none}

/* Login */
.login-bg{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1e3a8a,#1d4ed8 55%,#0284c7);padding:20px}
.login{width:380px;max-width:100%;background:var(--panel);border-radius:22px;padding:36px;box-shadow:0 25px 60px -15px rgba(2,6,23,.4)}
.login h2{margin:0 0 4px;font-size:26px;font-weight:800;text-align:center}
.login p.sub{text-align:center;color:var(--muted);margin:0 0 24px}
.login input{margin:8px 0}.login .btn{width:100%;margin-top:14px;justify-content:center}

/* Layout */
.shell{display:flex;min-height:100vh}
.side{width:260px;background:linear-gradient(180deg,#111827,#1e293b);color:#cbd5e1;display:flex;flex-direction:column;padding:22px 16px;position:sticky;top:0;height:100vh}
.side .brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:#fff;padding:0 8px 22px}
.side .brand .dot{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand2));display:flex;align-items:center;justify-content:center}
.side nav{display:flex;flex-direction:column;gap:4px}
.side a{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:11px;font-weight:600;color:#94a3b8;transition:.15s}
.side a:hover{background:#ffffff10;color:#fff}.side a.active{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 8px 18px -8px var(--brand)}
.side a svg{width:18px;height:18px}.side .grow{flex:1}
.side .user{display:flex;align-items:center;gap:10px;padding:12px;background:#ffffff0d;border-radius:12px;margin-top:auto}
.side .user .av{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand2));display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff}
.side .user b{display:block;color:#fff;font-size:13px}.side .user small{color:#94a3b8}

main{flex:1;padding:32px 40px;max-width:1100px}
.head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
h1{font-size:24px;font-weight:800;margin:0}h2{font-size:17px;margin:28px 0 8px}h3{margin:18px 0 6px;font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}

.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin:14px 0;box-shadow:var(--shadow)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:8px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.stat .ic{width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:10px}
.stat .ic svg{width:22px;height:22px}
.stat b{font-size:26px;font-weight:800;display:block}.stat span{color:var(--muted);font-size:13px}
label{display:block;margin:12px 0;font-size:13px;font-weight:700;color:#334155}
input,textarea,select{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:11px;font-size:14px;font-weight:500;background:#fff;font-family:inherit;transition:.15s}
input:focus,textarea:focus,select:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px #6366f130}
.btn{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border:0;padding:11px 20px;border-radius:11px;cursor:pointer;font-weight:700;font-size:14px;transition:.15s}
.btn:hover{filter:brightness(1.08);transform:translateY(-1px)}.btn.sm{padding:6px 11px;font-size:12px;border-radius:8px}
.btn.red{background:linear-gradient(135deg,#ef4444,#dc2626)}.btn.ghost{background:#f1f5f9;color:#334155}
.badge{display:inline-flex;align-items:center;gap:6px;background:#dbeafe;color:#1e40af;padding:6px 14px;border-radius:99px;font-weight:700}
.alert{padding:13px 16px;border-radius:12px;margin:14px 0;font-weight:600;border:1px solid}
.alert.ok{background:#ecfdf5;color:#065f46;border-color:#a7f3d0}.alert.err{background:#fef2f2;color:#991b1b;border-color:#fecaca}
table{width:100%;border-collapse:collapse}th{text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted);padding:10px;border-bottom:2px solid var(--line)}
td{padding:11px 10px;border-bottom:1px solid var(--line)}tr:hover td{background:#fafbff}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;align-items:end}.inline{display:inline}.inline input{width:auto}
.pill{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:99px;font-size:12px;font-weight:700}.pill svg{width:13px;height:13px}.pill.on{background:#dcfce7;color:#166534}.pill.off{background:#fee2e2;color:#991b1b}
.mtop{display:none}
@media(max-width:760px){
  body{padding-bottom:78px}
  /* Mobilde dikey/yatay flex kurgusunu bırak; basit blok akışı kullan */
  .shell{display:block;min-height:auto}
  main{display:block;width:100%;max-width:100%;padding:18px 16px}
  .mtop{display:flex;align-items:center;gap:8px;font-weight:800;color:#fff;background:linear-gradient(135deg,#1e3a8a,#1d4ed8);padding:14px 18px;padding-top:calc(14px + env(safe-area-inset-top,0px));position:sticky;top:0;z-index:20;box-shadow:0 4px 14px rgba(0,0,0,.15)}
  .mtop .dot{width:28px;height:28px;border-radius:8px;background:#ffffff22;display:flex;align-items:center;justify-content:center}
  /* Yan menü -> alta sabitlenmiş alt navigasyon */
  .side{position:fixed;top:auto;bottom:0;left:0;right:0;width:100%;height:auto;display:flex;flex-direction:row;padding:6px;padding-bottom:calc(6px + env(safe-area-inset-bottom,0px));background:#fff;border-top:1px solid var(--line);z-index:30;box-shadow:0 -4px 20px rgba(2,6,23,.08)}
  .side .brand,.side .user{display:none}
  .side nav{display:flex;flex-direction:row;flex:1;justify-content:space-around;gap:0}
  .side a{flex-direction:column;gap:3px;font-size:11px;color:var(--muted);padding:8px 4px;flex:1;text-align:center;border-radius:12px}
  .side a span{font-size:10px}.side a svg{width:22px;height:22px}
  .side a:hover{background:transparent;color:var(--muted)}
  .side a.active{background:transparent;color:var(--brand);box-shadow:none}
  .stats{grid-template-columns:repeat(2,1fr)}.grid{grid-template-columns:1fr}
  .card{border-radius:18px}.btn{width:100%;justify-content:center;padding:14px}.btn.sm{width:auto;padding:7px 12px}.inline,.inline input{width:auto}
  table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:nowrap}
  table.card{padding:14px}
}