:root{--bg:#0e1117;--panel:#161b24;--panel-2:#1d2430;--border:#2a323f;--text:#e6eaf0;--muted:#8b96a8;--accent:#4f8cff;--accent-hover:#6ba0ff;--danger:#ff5a5a;--success:#35d07f;--warn:#f2b544}*{box-sizing:border-box}select option{background-color:#ffffff;color:#111111}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,Segoe UI,Sarabun,Tahoma,sans-serif;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.login-card{width:100%;max-width:380px;background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:32px 28px;box-shadow:0 12px 40px rgba(0,0,0,.4)}.login-card h1{margin:0 0 4px;font-size:22px}.login-card .sub{color:var(--muted);font-size:13px;margin-bottom:22px}.field{margin-bottom:15px}.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}.field input{width:100%;padding:11px 13px;background:var(--bg);border:1px solid var(--border);border-radius:9px;color:var(--text);font-size:15px;outline:none}.field input:focus{border-color:var(--accent)}.btn{width:100%;padding:12px;background:var(--accent);color:#fff;border:none;border-radius:9px;font-size:15px;font-weight:700;cursor:pointer}.btn:hover:not(:disabled){background:var(--accent-hover)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-sm{width:auto;padding:7px 13px;font-size:13px}.btn-danger{background:var(--danger)}.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text)}.alert{padding:11px 13px;border-radius:9px;font-size:13px;margin-bottom:15px}.alert.error{background:rgba(255,90,90,.13);border:1px solid rgba(255,90,90,.4);color:#ffc9c9}.alert.success{background:rgba(53,208,127,.13);border:1px solid rgba(53,208,127,.4);color:#b6f0d2}.alert.warn{background:rgba(242,181,68,.12);border:1px solid rgba(242,181,68,.4);color:#ffe1a6}.toast-stack{position:fixed;top:76px;right:18px;z-index:2000;display:flex;flex-direction:column;gap:8px;width:min(360px,calc(100vw - 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