/**
 * Auth Pages (Login & Register) - Mobile-First
 * Shared styles for login.html and register.html
 */

/* Full-screen gradient background */
body.auth-page {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

/* Auth Container */
.auth-container {
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 450px;
    padding: var(--spacing-xl) var(--spacing-lg);
    animation: fadeInUp 0.5s ease;
}

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

/* Tablet+ */
@media (min-width: 768px) {
    .auth-container {
        padding: 50px 40px;
    }
}

/* Logo Section */
.auth-logo {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-logo h1 {
    font-family: 'Montserrat', sans-serif;
    color: var(--primary);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.auth-logo .subtitle {
    color: #666;
    font-size: var(--font-sm);
}

@media (min-width: 768px) {
    .auth-logo h1 {
        font-size: 2.25rem;
    }
    
    .auth-logo .subtitle {
        font-size: var(--font-base);
    }
}

/* Auth Form */
.auth-form {
    margin-top: var(--spacing-lg);
}

/* Auth Links */
.auth-links {
    text-align: center;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray);
}

.auth-links p {
    color: #666;
    font-size: var(--font-sm);
}

.auth-links a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.auth-links a:hover {
    color: var(--secondary);
}

/* Form Row (for side-by-side fields on larger screens) */
.form-row {
    display: grid;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .form-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Password Toggle */
.password-group {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    padding: var(--spacing-xs);
    font-size: 1.25rem;
    line-height: 1;
    transition: color var(--transition-fast);
}

.password-toggle:hover {
    color: var(--primary);
}

/* Loading State for Auth Buttons */
.btn-loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 0.8s linear infinite;
}

/* Success/Error Messages */
.message {
    padding: var(--spacing-md);
    border-radius: 8px;
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-sm);
    display: none;
}

.message.show {
    display: block;
    animation: slideDown 0.3s ease;
}

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

.message.success {
    background: #D1FAE5;
    color: var(--success);
    border-left: 4px solid var(--success);
}

.message.error {
    background: #FEE2E2;
    color: var(--error);
    border-left: 4px solid var(--error);
}

/* Checkbox/Terms */
.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin-top: 4px;
    cursor: pointer;
}

.checkbox-group label {
    margin: 0;
    flex: 1;
    font-size: var(--font-sm);
    font-weight: 400;
    cursor: pointer;
}

.checkbox-group a {
    color: var(--primary);
    text-decoration: underline;
}

/* Password Strength Meter */
.password-strength {
    margin-top: var(--spacing-sm);
    font-size: var(--font-sm);
}

.strength-bar {
    height: 4px;
    background: var(--gray-light);
    border-radius: 2px;
    margin-top: 5px;
    margin-bottom: 5px;
    overflow: hidden;
}

.strength-bar-fill {
    height: 100%;
    transition: all 0.3s ease;
    width: 0;
    border-radius: 2px;
}

.strength-weak {
    width: 33%;
    background: var(--error);
}

.strength-medium {
    width: 66%;
    background: var(--warning);
}

.strength-strong {
    width: 100%;
    background: var(--success);
}

/* Error Message */
.error-message {
    color: var(--error);
    font-size: var(--font-sm);
    margin-top: var(--spacing-xs);
    display: none;
}

.error-message.show {
    display: block;
}