.login-container{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--background);padding:1rem}.login-card{background-color:var(--sidebar-background);color:var(--foreground);box-shadow:0 4px 12px rgba(0,0,0,.1);border-radius:1rem;padding:2rem;width:100%;max-width:400px;transition:background-color .3s ease}.login-title{font-size:1.8rem;font-weight:700;margin-bottom:1.5rem;text-align:center;color:var(--foreground)}.login-error{color:#e74c3c;font-size:.9rem;margin-bottom:1rem;text-align:center}.login-form{display:flex;flex-direction:column;gap:1rem}.login-input{padding:.75rem;border-radius:.5rem;border:1px solid #ccc;background-color:var(--background);color:var(--foreground);font-size:1rem;transition:border .3s ease}.login-input:focus{outline:none;border-color:#3b82f6}.login-button{padding:.75rem;border:none;background-color:#3b82f6;color:white;font-size:1rem;border-radius:.5rem;cursor:pointer;transition:background-color .3s ease}.login-button:hover{background-color:#2563eb}.login-button:disabled{opacity:.6;cursor:not-allowed}.login-header{position:absolute;top:1rem;left:1rem;right:1rem;display:flex;justify-content:space-between;align-items:center}.login-logo{height:40px;width:auto}.theme-toggle{background:transparent;border:none;cursor:pointer;color:var(--foreground);transition:color .3s ease}.theme-toggle:hover{color:#999}