:root{--bg:#f3f6f7;--card:#fff;--ink:#1c2a33;--mute:#62727d;--line:#dbe3e7;--ok:#0f766e;--okbg:#d9f1ee;--bad:#b4382f;--badbg:#fbe3e0;--wip:#a8650a;--wipbg:#fdecc8;--off:#e6ebee;--today:#fdecc8;--accent:#0f766e;--nav:#16232b}
@media (prefers-color-scheme:dark){:root{--bg:#0f171c;--card:#172229;--ink:#e6eef2;--mute:#8fa2ad;--line:#2a3a43;--ok:#4fd1c0;--okbg:#12403c;--bad:#ff8a80;--badbg:#4a1f1b;--wip:#f2b84b;--wipbg:#43330f;--off:#24323a;--today:#43330f;--accent:#4fd1c0;--nav:#0a1115}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;line-height:1.45}
main{max-width:1500px;margin:0 auto;padding:20px 16px 48px}
h1{font-size:1.75rem;font-weight:800;margin:0 0 4px;letter-spacing:-.02em}
h2{font-size:1.1rem;margin:0 0 10px}
.sub{color:var(--mute);margin:0 0 16px}
input,select,button,textarea{font:inherit;color:var(--ink)}
button,label.btn{cursor:pointer;border:1px solid var(--line);background:var(--card);border-radius:8px;padding:7px 14px;display:inline-block}
button.pri{background:var(--accent);border-color:var(--accent);color:var(--bg);font-weight:700}
button:disabled{opacity:.55;cursor:not-allowed}
input[type=text],input[type=number],input[type=date],input[type=email],input[type=password],select{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:7px 9px;min-width:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px 16px}
.note{color:var(--mute);font-size:.85rem;margin-top:8px}
.del{border:0;background:transparent;color:var(--mute);font-size:1.05rem;padding:4px 8px}
.del:hover{color:var(--bad)}

/* üst menü */
.topnav{position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:6px;flex-wrap:wrap;background:var(--nav);color:#fff;padding:8px 16px}
.topnav .logo{color:#fff;text-decoration:none;font-size:1.05rem;margin-right:14px;white-space:nowrap}
.topnav .logo b{color:#4fd1c0}
.topnav nav{display:flex;gap:4px;flex-wrap:wrap}
.topnav nav a{color:#c9d6dd;text-decoration:none;padding:7px 12px;border-radius:8px;font-size:.95rem}
.topnav nav a:hover{background:rgba(255,255,255,.08);color:#fff}
.topnav nav a.on{background:#4fd1c0;color:#0a1115;font-weight:700}
.topnav .sp{flex:1}
.topnav .ghost{background:transparent;color:#c9d6dd;border-color:#3a4a53;padding:5px 12px}
.savestate{font-size:.85rem;color:#c9d6dd;margin-right:6px}
.savestate[data-k=ok]{color:#4fd1c0}.savestate[data-k=err]{color:#ff8a80;font-weight:700}
.demo{font-size:.8rem;background:#a8650a;color:#fff;border-radius:20px;padding:3px 10px}

/* alt sekmeler */
.tabs{display:flex;gap:2px;border-bottom:1px solid var(--line);margin:0 0 16px;flex-wrap:wrap}
.tabs button{border:0;border-bottom:3px solid transparent;border-radius:0;background:transparent;padding:10px 16px;color:var(--mute);font-weight:600}
.tabs button[aria-selected=true]{color:var(--ink);border-bottom-color:var(--accent)}
.pane{display:none}.pane.on{display:block}
.toast{position:fixed;right:20px;bottom:20px;background:#1d2329;color:#fff;padding:12px 14px;border-radius:8px;font-size:.9rem;box-shadow:0 5px 22px rgba(0,0,0,.25);opacity:0;transform:translateY(8px);pointer-events:none;transition:.2s;z-index:999}
.toast.show{opacity:1;transform:none}
@media print{.topnav{display:none!important}}