body {
    background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%);
    min-height: 100vh;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    font-family: var(--font-family);
}

.login-container {
    width: 100%;
    max-width: 400px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.1),
        0 0 0 1px rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: fadeInUp 0.6s ease-out;
    position: relative;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.login-header h1 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: #ffffff;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.close-btn {
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    position: relative;
}

.close-btn::before,
.close-btn::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 2px;
    background: white;
    border-radius: 1px;
}

.close-btn::before {
    transform: rotate(45deg);
}

.close-btn::after {
    transform: rotate(-45deg);
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.1);
}

.login-form {
    width: 100%;
}

.title {
    text-align: center;
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: #ffffff;
    margin-bottom: var(--spacing-xl);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.form-group {
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: #e2e8f0;
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.form-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 48px;
    font-size: var(--font-size-base);
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(148, 163, 184, 0.3);
    border-radius: var(--border-radius);
    color: #f8fafc;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
    transition: all var(--transition-base);
    box-sizing: border-box;
}

.form-input::placeholder {
    color: #cbd5e1;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
}

.form-input:focus {
    outline: none;
    border-color: rgba(148, 163, 184, 0.6);
    background: rgba(255, 255, 255, 0.5);
    box-shadow: 0 0 0 3px rgba(148, 163, 184, 0.1);
}

.form-input.error {
    border-color: rgba(239, 68, 68, 0.5);
    background: rgba(239, 68, 68, 0.1);
}

.input-icon {
    position: absolute;
    left: var(--spacing-md);
    color: #cbd5e1;
    font-size: var(--font-size-base);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
    z-index: 1;
    pointer-events: none;
}

.submit-btn {
    width: 100%;
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    background: rgba(148, 163, 184, 0.3);
    backdrop-filter: blur(10px);
    color: #ffffff;
    border: 1px solid rgba(148, 163, 184, 0.4);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-base);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    margin-bottom: var(--spacing-lg);
}

.submit-btn:hover:not(:disabled) {
    background: rgba(148, 163, 184, 0.4);
    border-color: rgba(148, 163, 184, 0.6);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.submit-btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-primary {
    width: 100%;
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-base);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.error-message {
    background: rgba(245, 101, 101, 0.2);
    backdrop-filter: blur(10px);
    color: white;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    margin-top: var(--spacing-xs);
    border: 1px solid rgba(245, 101, 101, 0.3);
    font-size: var(--font-size-sm);
    animation: shake 0.5s ease-in-out;
    opacity: 0;
    transform: translateY(-10px);
    transition: all var(--transition-base);
}

.error-message.show {
    opacity: 1;
    transform: translateY(0);
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.footer-link {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.footer-link a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-base);
}

.footer-link a:hover {
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.page-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.page-footer a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: var(--font-size-xs);
    transition: color var(--transition-base);
}

.page-footer a:hover {
    color: white;
}

@media (max-width: 480px) {
    body {
        padding: var(--spacing-md);
    }
    
    .login-container {
        max-width: 100%;
        padding: var(--spacing-xl);
    }
    
    .login-header h1 {
        font-size: var(--font-size-xl);
    }
    
    .title {
        font-size: var(--font-size-xl);
    }
    
    .page-footer {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-xs);
    }
}