.login-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
}

.login-card {
    width: 100%;
    max-width: 420px;
    padding: 2.75rem 2.5rem;
    border-radius: var(--radius-lg);
    position: relative;
    z-index: 1;
    animation: loginUp .6s cubic-bezier(.16,1,.3,1);
}

.login-head { text-align: center; margin-bottom: 2rem; }
.login-logo { width: 180px; max-width: 70%; height: auto; margin-bottom: 1.75rem; filter: drop-shadow(0 6px 18px rgba(0,0,0,.6)); }
.login-head h1 { font-size: 1.5rem; font-weight: 700; letter-spacing: -.02em; }
.login-head p { color: var(--text-muted); font-size: .92rem; margin-top: .35rem; }

.login-submit { width: 100%; padding: .9rem; margin-top: .5rem; font-size: 1rem; }
.login-submit.loading { pointer-events: none; opacity: .8; }
.login-submit.loading .btn-label::after {
    content: ''; display: inline-block; width: 14px; height: 14px; margin-left: 8px;
    border: 2px solid rgba(0,0,0,.3); border-top-color: #000; border-radius: 50%;
    vertical-align: -2px; animation: spin .7s linear infinite;
}

.login-error {
    background: rgba(239,68,68,.1); border: 1px solid rgba(239,68,68,.35);
    color: #fca5a5; font-size: .85rem; padding: .7rem .9rem; border-radius: var(--radius-sm);
    margin-bottom: 1rem; animation: shake .4s ease;
}

@keyframes loginUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes shake { 0%,100%{transform:translateX(0)} 25%{transform:translateX(-5px)} 75%{transform:translateX(5px)} }