/* Login Page Styles */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    padding: 1rem;
}

.login-container {
    background-color: var(--bg-card, #2d2d2d);
    border: 1px solid var(--border-color, #404040);
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    width: 100%;
    max-width: 420px;
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header i {
    font-size: 3rem;
    color: #0d6efd;
    margin-bottom: 1rem;
}

.login-header h2 {
    margin-bottom: 0.5rem;
    color: var(--text-primary, #ffffff);
    font-size: 1.75rem;
    font-weight: 600;
}

.login-header p {
    margin: 0;
    font-size: 0.95rem;
}

/* Form Styles */
.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary, #ffffff);
    font-size: 0.9rem;
}

.input-group-text {
    background-color: var(--bg-primary, #1a1a1a);
    border-color: var(--border-color, #404040);
    color: var(--text-secondary, #b0b0b0);
}

.form-control {
    background-color: var(--bg-primary, #1a1a1a);
    border-color: var(--border-color, #404040);
    color: var(--text-primary, #ffffff);
    padding: 0.625rem 0.875rem;
}

.form-control:focus {
    background-color: var(--bg-primary, #1a1a1a);
    border-color: #0d6efd;
    color: var(--text-primary, #ffffff);
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.form-control::placeholder {
    color: var(--text-secondary, #6c757d);
}

.form-control.is-invalid {
    border-color: #dc3545;
}

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 0.25rem rgba(220, 53, 69, 0.25);
}

/* Password Toggle Button */
#togglePassword {
    background-color: var(--bg-primary, #1a1a1a);
    border-color: var(--border-color, #404040);
    color: var(--text-secondary, #b0b0b0);
}

#togglePassword:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary, #ffffff);
}

/* Checkbox */
.form-check-input {
    background-color: var(--bg-primary, #1a1a1a);
    border-color: var(--border-color, #404040);
}

.form-check-input:checked {
    background-color: #0d6efd;
    border-color: #0d6efd;
}

.form-check-label {
    color: var(--text-secondary, #b0b0b0);
    font-size: 0.9rem;
}

/* Error Alert */
.alert {
    font-size: 0.9rem;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    animation: shake 0.4s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.1);
    border-color: #dc3545;
    color: #ea868f;
}

/* Submit Button */
.btn-primary {
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    font-size: 1rem;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(13, 110, 253, 0.4);
}

.btn-primary:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

/* Footer */
.login-footer {
    margin-top: 1.5rem;
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color, #404040);
}

.login-footer small {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* Loading Spinner */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
}

/* Responsive Design */
@media (max-width: 576px) {
    .login-container {
        padding: 2rem 1.5rem;
    }

    .login-header h2 {
        font-size: 1.5rem;
    }

    .login-header i {
        font-size: 2.5rem;
    }
}

/* Invalid Feedback */
.invalid-feedback {
    display: none;
    color: #ea868f;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.form-control.is-invalid ~ .invalid-feedback {
    display: block;
}

/* Focus Visible */
button:focus-visible,
input:focus-visible {
    outline: 2px solid #0d6efd;
    outline-offset: 2px;
}