* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', sans-serif; }
body { background: #0f172a; display: flex; justify-content: center; align-items: center; height: 100vh; color: #f8fafc; }
.login-card { background: #1e293b; padding: 45px 40px; border-radius: 16px; width: 100%; max-width: 400px; box-shadow: 0 20px 25px -5px rgba(0,0,0,0.5); border: 1px solid #334155; }
.brand { text-align: center; font-size: 32px; font-weight: 800; color: #fef08a; letter-spacing: 2px; }
.subtitle { text-align: center; color: #94a3b8; font-size: 13px; margin-bottom: 35px; text-transform: uppercase; }
.form-group { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
label { font-size: 11px; font-weight: 700; color: #94a3b8; text-transform: uppercase; }
input { padding: 12px 16px; background: #0f172a; border: 1px solid #334155; border-radius: 8px; color: white; font-size: 15px; outline: none; }
input:focus { border-color: #fef08a; }
button { width: 100%; padding: 14px; background: #fef08a; color: #1e293b; border: none; border-radius: 8px; font-weight: 700; cursor: pointer; text-transform: uppercase; transition: 0.2s; }
button:hover { background: #fde047; }
.error-alert { color: #f87171; background: rgba(248, 113, 113, 0.1); border: 1px solid rgba(248, 113, 113, 0.2); padding: 12px; border-radius: 8px; font-size: 13px; text-align: center; margin-top: 20px; display: none; }