/* ============================================
   Fast2 — Authentication Pages
   ============================================ */

/* --- Auth Container --- */
.auth-container {
    max-width: 480px;
    margin: 0 auto;
    padding: 120px var(--sp-lg) 60px;
}

/* --- Auth Card --- */
.auth-card {
    background-color: var(--c-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: 40px 36px;
}

.auth-card--wide {
    max-width: 540px;
}

/* --- Auth Header --- */
.auth-header {
    text-align: center;
    margin-bottom: var(--sp-xl);
}

.auth-header__title {
    font-family: var(--ff-display);
    font-size: var(--fs-h2);
    font-weight: var(--fw-bold);
    color: var(--c-dark);
    margin-bottom: var(--sp-sm);
}

.auth-header__subtitle {
    font-size: var(--fs-small);
    color: var(--c-text-light);
    line-height: var(--lh-normal);
}

/* --- Auth Form --- */
.auth-form .form-group {
    margin-bottom: 20px;
    position: relative;
}

.auth-form .form-label {
    display: block;
    font-size: var(--fs-small);
    font-weight: var(--fw-medium);
    color: var(--c-dark);
    margin-bottom: 6px;
}

.auth-form .form-input {
    width: 100%;
    height: 48px;
    padding: 0 16px;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    font-size: var(--fs-body);
    font-family: var(--ff-body);
    background-color: var(--c-white);
    color: var(--c-dark);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    box-sizing: border-box;
}

.auth-form .form-input::placeholder {
    color: var(--c-text-light);
}

.auth-form .form-input:focus {
    outline: none;
    border-color: var(--c-primary);
    box-shadow: 0 0 0 3px var(--c-primary-50);
}

.auth-form .form-input--error {
    border-color: var(--c-error);
}

.auth-form .form-input--error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.auth-form .form-error {
    font-size: var(--fs-xs);
    color: var(--c-error);
    margin-top: 4px;
    display: none;
}

.auth-form .form-error.visible {
    display: block;
}

/* --- Form Row --- */
.form-row {
    display: flex;
    gap: 16px;
}

.form-row > .form-group {
    flex: 1;
}

/* --- Custom Checkbox --- */
.auth-form .form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
}

.auth-form .form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    min-width: 18px;
    accent-color: var(--c-primary);
    cursor: pointer;
    margin-top: 1px;
}

.auth-form .form-checkbox__label {
    font-size: var(--fs-small);
    color: var(--c-text-light);
    line-height: var(--lh-normal);
}

.auth-form .form-checkbox__label a {
    color: var(--c-primary);
    text-decoration: none;
    font-weight: var(--fw-medium);
}

.auth-form .form-checkbox__label a:hover {
    text-decoration: underline;
}

/* --- Auth Submit Button --- */
.auth-submit {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 48px;
    background-color: var(--c-primary);
    color: var(--c-white);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--fs-body);
    font-weight: var(--fw-semibold);
    font-family: var(--ff-body);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    position: relative;
}

.auth-submit:hover {
    background-color: var(--c-primary-dark);
}

.auth-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.auth-submit--loading {
    color: transparent;
    pointer-events: none;
}

.auth-submit--loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--c-white);
    border-radius: 50%;
    animation: auth-spinner 0.6s linear infinite;
}

@keyframes auth-spinner {
    to { transform: rotate(360deg); }
}

/* --- Auth Links --- */
.auth-links {
    text-align: center;
    margin-top: var(--sp-lg);
    font-size: var(--fs-small);
    color: var(--c-text-light);
}

.auth-links a {
    color: var(--c-primary);
    text-decoration: none;
    font-weight: var(--fw-medium);
}

.auth-links a:hover {
    text-decoration: underline;
}

.auth-links p + p {
    margin-top: var(--sp-sm);
}

/* --- Auth Divider --- */
.auth-divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 20px 0;
    color: var(--c-text-light);
    font-size: var(--fs-xs);
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background-color: var(--c-border);
}

/* --- Password Strength --- */
.password-strength {
    margin-top: 8px;
}

.password-strength__bar {
    height: 4px;
    border-radius: 2px;
    background-color: var(--c-surface);
    overflow: hidden;
}

.password-strength__fill {
    height: 100%;
    border-radius: 2px;
    transition: width var(--transition-normal);
    width: 0;
}

.password-strength__fill--weak { width: 25%; background-color: var(--c-error); }
.password-strength__fill--fair { width: 50%; background-color: var(--c-warning); }
.password-strength__fill--good { width: 75%; background-color: var(--c-success); }
.password-strength__fill--strong { width: 100%; background-color: var(--c-primary); }

.password-strength__label {
    font-size: var(--fs-xs);
    margin-top: 4px;
    color: var(--c-text-light);
}

/* --- Password Toggle --- */
.form-input-wrapper {
    position: relative;
}

.form-input-wrapper .form-input {
    padding-right: 48px;
}

.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--c-text-light);
    padding: 4px;
    transition: color var(--transition-fast);
}

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

/* --- Profile Sections --- */
.profile-section {
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--c-border);
}

.profile-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.profile-section__title {
    font-family: var(--ff-display);
    font-size: var(--fs-h4);
    font-weight: var(--fw-semibold);
    margin-bottom: 20px;
    color: var(--c-dark);
}

/* --- Auth Alerts --- */
.auth-alert {
    padding: 14px 16px;
    border-radius: var(--radius-md);
    font-size: var(--fs-small);
    margin-bottom: 20px;
    line-height: var(--lh-normal);
}

.auth-alert--success {
    background-color: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: #059669;
}

.auth-alert--error {
    background-color: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--c-error);
}

.auth-alert--info {
    background-color: rgba(233, 30, 99, 0.08);
    border: 1px solid rgba(233, 30, 99, 0.2);
    color: var(--c-primary);
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .auth-container {
        padding-top: 90px;
        padding-left: var(--sp-md);
        padding-right: var(--sp-md);
    }

    .auth-card {
        padding: 28px 20px;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }
}

@media (max-width: 480px) {
    .auth-container {
        padding-top: 80px;
    }

    .auth-card {
        padding: 24px 16px;
    }
}