:root{--bg:#f7f9ff;--card:#ffffff;--text:#172033;--muted:#667085;--primary:#2563eb;--primary2:#7c3aed;--soft:#eaf1ff;--border:#e6eaf3;--success:#16a34a;--danger:#dc2626;--shadow:0 20px 55px rgba(29,44,79,.10);--radius:24px}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Arial,sans-serif;background:linear-gradient(135deg,#f9fbff 0%,#eef5ff 46%,#fff9ef 100%);color:var(--text);min-height:100vh}a{text-decoration:none;color:inherit}.auth-page{display:grid;place-items:center;min-height:100vh;padding:24px}.auth-card{width:min(440px,100%);background:rgba(255,255,255,.84);backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.7);box-shadow:var(--shadow);border-radius:32px;padding:34px}.brand{display:flex;align-items:center;gap:12px}.logo{width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,var(--primary),var(--primary2));display:grid;place-items:center;color:white;font-size:22px;box-shadow:0 12px 28px rgba(37,99,235,.28)}h1{margin:18px 0 8px;font-size:30px;line-height:1.15}.sub{color:var(--muted);margin:0 0 22px}.field{margin:14px 0}.field label{display:block;font-weight:700;font-size:13px;margin-bottom:7px}.input,.select{width:100%;padding:14px 15px;border:1px solid var(--border);border-radius:15px;background:#fff;color:var(--text);outline:none;font-size:15px}.input:focus,.select:focus{border-color:#9bbcff;box-shadow:0 0 0 4px #dbeafe}.btn{border:0;border-radius:15px;padding:13px 18px;font-weight:800;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:9px;transition:.2s;background:#edf2ff;color:#1d4ed8}.btn:hover{transform:translateY(-1px);box-shadow:0 10px 22px rgba(37,99,235,.12)}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:white}.btn-danger{background:#fee2e2;color:#b91c1c}.btn-success{background:#dcfce7;color:#166534}.full{width:100%}.alert{padding:13px 15px;border-radius:15px;background:#fff1f2;color:#be123c;border:1px solid #ffe4e6;margin:12px 0}.app{display:flex;min-height:100vh}.sidebar{width:280px;background:rgba(255,255,255,.82);backdrop-filter:blur(18px);border-right:1px solid var(--border);padding:22px;position:fixed;height:100vh;overflow:auto}.nav{margin-top:26px;display:grid;gap:8px}.nav a{padding:13px 14px;border-radius:16px;color:#334155;font-weight:700}.nav a.active,.nav a:hover{background:linear-gradient(135deg,#eef5ff,#f5efff);color:#1d4ed8}.main{margin-left:280px;width:calc(100% - 280px);padding:24px}.topbar{background:rgba(255,255,255,.78);border:1px solid rgba(255,255,255,.9);box-shadow:var(--shadow);border-radius:28px;padding:18px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;position:sticky;top:14px;z-index:10}.topbar h2{margin:0;font-size:24px}.user-chip{display:flex;align-items:center;gap:10px;background:#f8fafc;border:1px solid var(--border);padding:10px 12px;border-radius:999px;font-weight:800}.grid{display:grid;gap:18px}.cards{grid-template-columns:repeat(3,minmax(0,1fr));margin:22px 0}.card{background:rgba(255,255,255,.86);border:1px solid rgba(255,255,255,.9);box-shadow:var(--shadow);border-radius:var(--radius);padding:22px}.stat{display:flex;justify-content:space-between;align-items:center}.stat .num{font-size:34px;font-weight:900}.stat i{font-size:28px;color:var(--primary);background:var(--soft);padding:15px;border-radius:18px}.toolbar{display:grid;grid-template-columns:1fr 1fr 1.5fr auto;gap:12px;margin-bottom:18px}.file-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.file-card{background:#fff;border:1px solid var(--border);border-radius:22px;padding:18px;box-shadow:0 10px 30px rgba(31,41,55,.06);display:flex;flex-direction:column;gap:12px}.file-head{display:flex;gap:12px;align-items:flex-start}.file-icon{width:46px;height:46px;border-radius:16px;background:linear-gradient(135deg,#eff6ff,#faf5ff);display:grid;place-items:center;color:#2563eb;font-size:22px;flex:none}.file-title{font-weight:900;line-height:1.25;word-break:break-word}.meta{color:var(--muted);font-size:13px;display:flex;flex-wrap:wrap;gap:8px}.pill{display:inline-flex;background:#f1f5f9;border:1px solid #e2e8f0;border-radius:999px;padding:5px 9px;font-size:12px;font-weight:800;color:#475569}.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto}.copybox{display:flex;gap:8px}.copybox input{font-size:13px}.upload-zone{border:2px dashed #bcd2ff;background:#f8fbff;border-radius:26px;padding:28px;text-align:center}.upload-zone i{font-size:44px;color:var(--primary)}.muted{color:var(--muted)}.public-wrap{max-width:1050px;margin:0 auto;padding:24px}.hero{background:linear-gradient(135deg,#ffffff,#eef5ff);border:1px solid #fff;box-shadow:var(--shadow);border-radius:32px;padding:28px;margin-bottom:20px}.mobile-toggle{display:none}.empty{text-align:center;padding:50px;color:var(--muted)}@media(max-width:1000px){.sidebar{transform:translateX(-105%);transition:.25s;z-index:30}.sidebar.open{transform:none}.mobile-toggle{display:inline-flex}.main{margin-left:0;width:100%;padding:14px}.cards,.file-grid{grid-template-columns:1fr 1fr}.toolbar{grid-template-columns:1fr}.topbar{border-radius:20px}.auth-card{padding:24px}}@media(max-width:620px){.cards,.file-grid{grid-template-columns:1fr}.topbar{align-items:flex-start;flex-direction:column}.actions .btn{flex:1}.sidebar{width:86%}}