:root { --bg: #0a0a0b; --panel: #161922; --border: #2a2e3d; --text: #e1e4ed; --muted: #8b8fa3; --blue: #3b82f6; --red: #ef4444; }
body { font-family: -apple-system, system-ui, sans-serif; background: var(--bg); color: var(--text); display: flex; justify-content: center; align-items: center; height: 100vh; margin: 0; }
.login-box { border: 1px solid var(--border); padding: 2.5rem; background: var(--panel); border-radius: 12px; box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6); width: 100%; max-width: 400px; }
h2 { margin-top: 0; text-transform: uppercase; letter-spacing: 2px; border-bottom: 1px solid var(--border); padding-bottom: 1rem; text-align: center; }
.input-group { margin-bottom: 1.5rem; }
label { display: block; margin-bottom: 0.5rem; color: var(--muted); font-size: 0.8rem; text-transform: uppercase; }
input { background: #0f1117; border: 1px solid var(--border); color: var(--text); padding: 0.8rem; border-radius: 6px; width: 100%; box-sizing: border-box; font-size: 1rem; outline: none; }
input:focus { border-color: var(--blue); }
button { background: var(--blue); color: #fff; border: none; padding: 0.8rem; border-radius: 6px; cursor: pointer; font-weight: 600; width: 100%; text-transform: uppercase; margin-top: 1rem; }
button:hover { background: #2563eb; }
.error { background: rgba(239, 68, 68, 0.1); border: 1px solid var(--red); color: var(--red); padding: 0.75rem; border-radius: 6px; margin-bottom: 1.5rem; font-size: 0.9rem; text-align: center; }
.logo { color: var(--blue); font-weight: 800; }
.remember { margin-bottom: 0.5rem; }
.checkbox-label { display: flex; align-items: center; gap: 0.5rem; cursor: pointer; color: var(--muted); font-size: 0.85rem; text-transform: none; }
.checkbox-label input[type="checkbox"] { width: auto; accent-color: var(--blue); cursor: pointer; }