/**
 * Login Page Styles
 * Fast Food Management System
 */

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
    padding: var(--spacing-lg);
}

/* Animated Background */
.login-container::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: moveBackground 20s linear infinite;
}

@keyframes moveBackground {
    0% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(50px, 50px);
    }
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-2xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: var(--spacing-2xl);
    width: 100%;
    max-width: 450px;
    position: relative;
    z-index: 1;
    animation: slideUp 0.5s ease-out;
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.login-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.4);
}

.login-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.login-subtitle {
    color: var(--gray-600);
    font-size: 1rem;
}

.login-form {
    margin-top: var(--spacing-xl);
}

.login-form .form-group {
    position: relative;
}

.login-form .form-control {
    padding-left: 3rem;
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    font-size: 1rem;
}

.login-form .form-control:focus {
    background: white;
    border-color: var(--primary-600);
}

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: 1.25rem;
    pointer-events: none;
}

.login-form .form-control:focus+.input-icon {
    color: var(--primary-600);
}

.login-btn {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1.125rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
    margin-top: var(--spacing-md);
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
}

.login-btn:active {
    transform: translateY(0);
}

.login-footer {
    margin-top: var(--spacing-xl);
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-200);
    color: var(--gray-600);
    font-size: 0.875rem;
}

/* Error Message */
.error-message {
    background: #fee2e2;
    color: #991b1b;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    border-left: 4px solid var(--danger);
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-10px);
    }

    75% {
        transform: translateX(10px);
    }
}

/* Loading State */
.login-btn.loading {
    pointer-events: none;
    opacity: 0.7;
    position: relative;
}

.login-btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
}

@keyframes spin {
    to {
        transform: translateY(-50%) rotate(360deg);
    }
}

/* Responsive */
@media (max-width: 480px) {
    .login-card {
        padding: var(--spacing-lg);
    }

    .login-title {
        font-size: 1.5rem;
    }

    .login-logo {
        width: 60px;
        height: 60px;
        font-size: 2rem;
    }
}