:root{--login-bg: linear-gradient(135deg, #1677ff 0%, #4096ff 100%);--login-card-bg: #ffffff;--login-card-color: #1f1f1f;--login-card-shadow: 0 8px 32px rgba(0, 0, 0, .1)}[data-theme=dark]{--login-bg: linear-gradient(135deg, #0a1530 0%, #1a2c5a 100%);--login-card-bg: #1f1f1f;--login-card-color: rgba(255, 255, 255, .88);--login-card-shadow: 0 8px 32px rgba(0, 0, 0, .6)}html,body,#root{height:100%;margin:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--login-bg);transition:background-color .2s ease}.login-bg{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--login-bg)}.login-card{width:380px;padding:32px;background:var(--login-card-bg);color:var(--login-card-color);border-radius:8px;box-shadow:var(--login-card-shadow);transition:background-color .2s ease,color .2s ease}