/* Authentication Styles for Profit Calculator */

.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
    background: var(--primary-gradient);
}

.auth-card {
    background-color: var(--bg-secondary);
    border-radius: var(--card-radius);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 450px;
    overflow: hidden;
}

.auth-header {
    padding: 2rem;
    text-align: center;
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 1rem;
}

.logo i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.logo h1 {
    font-size: 1.75rem;
    color: var(--text-primary);
    margin: 0;
}

.tagline {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.9rem;
}

.auth-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    padding: 1rem;
    background: none;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
}

.tab-btn:hover {
    color: var(--primary-color);
}

.tab-btn.active {
    color: var(--primary-color);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
}

.auth-content {
    padding: 2rem;
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.input-with-icon {
    position: relative;
}

.input-with-icon i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.input-with-icon input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--input-radius);
    font-size: 1rem;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    transition: border-color 0.3s, box-shadow 0.3s;
}

.input-with-icon input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.remember-me {
    display: flex;
    align-items: center;
}

.remember-me input {
    margin-right: 0.5rem;
}

.forgot-password {
    color: var(--primary-color);
    text-decoration: none;
}

.forgot-password:hover {
    text-decoration: underline;
}

.btn-block {
    width: 100%;
    margin-bottom: 1.5rem;
}

.demo-accounts {
    margin-top: 1.5rem;
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.demo-accounts p {
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.demo-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.auth-message {
    padding: 1rem;
    margin-top: 1rem;
    border-radius: var(--input-radius);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.auth-message.success {
    background-color: rgba(76, 175, 80, 0.1);
    color: var(--success-color);
}

.auth-message.error {
    background-color: rgba(255, 107, 107, 0.1);
    color: var(--danger-color);
}

.auth-message i {
    font-size: 1.25rem;
}

/* Responsive Design */
@media (max-width: 480px) {
    .auth-container {
        padding: 1rem;
    }
    
    .auth-card {
        max-width: 100%;
    }
    
    .auth-header {
        padding: 1.5rem 1rem;
    }
    
    .auth-content {
        padding: 1.5rem 1rem;
    }
    
    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .demo-buttons {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .demo-buttons button {
        width: 100%;
    }
}