/* ==========================================================================
   Login Page Styles
   ========================================================================== */

/* Login Container */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
    padding: var(--spacing-xl) 0;
}

/* Login Card */
.login-card {
    background-color: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-2xl);
    width: 100%;
    max-width: 420px;
}

.login-title {
    text-align: center;
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-2xl);
}

/* Login Form */
.login-form {
    /* Form-specific styles inherit from global styles */
}

.login-form .form-group:last-of-type {
    margin-bottom: var(--spacing-xl);
}

/* Error Message Animation */
.error-message {
    animation: slideIn var(--transition-base) ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Focus States for Accessibility */
.login-form input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Button Hover State */
.login-form .btn-primary {
    position: relative;
    overflow: hidden;
}

.login-form .btn-primary::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width var(--transition-slow), height var(--transition-slow);
}

.login-form .btn-primary:hover::after {
    width: 300px;
    height: 300px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .login-card {
        padding: var(--spacing-xl);
        margin: 0 var(--spacing-md);
    }

    .login-container {
        min-height: 50vh;
    }
}

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

    .login-title {
        font-size: var(--font-size-xl);
    }
}

/* Loading State (for future use) */
.login-form .btn-primary:disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

.login-form .btn-primary:disabled::before {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-right: var(--spacing-sm);
    border: 2px solid white;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}