/**
 * Layout Styles
 * Container, Grid, Header, Footer, etc.
 *
 * @package IPPGI
 */

/* ==========================================================================
   Container
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.container--narrow {
    max-width: 800px;
}

.container--wide {
    max-width: 1400px;
}

/* ==========================================================================
   Grid System
   ========================================================================== */

.grid {
    display: grid;
    gap: var(--spacing-md);
}

.grid--2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ==========================================================================
   Top Utility Bar
   ========================================================================== */

.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    background: var(--color-primary-gradient);
    color: var(--color-text-white);
    font-size: var(--font-size-sm);
}

/* Adjust for WordPress admin bar */
.admin-bar .top-bar {
    top: 32px;
}

@media screen and (max-width: 782px) {
    .admin-bar .top-bar {
        top: 46px;
    }
}

.top-bar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 40px;
    padding: 0 var(--spacing-md);
}

.top-bar__support {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-white);
    text-decoration: none;
}

.top-bar__support:hover {
    opacity: 0.8;
}

.top-bar__right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* Language Selector */
.language-selector {
    position: relative;
}

.language-selector__trigger {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: none;
    border: none;
    color: var(--color-text-white);
    cursor: pointer;
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs);
}

.language-selector__trigger:hover {
    opacity: 0.8;
}

.language-selector__flag {
    border-radius: 2px;
}

/* Top Bar Login */
.top-bar__login {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: var(--radius-full);
    color: var(--color-text-white);
    cursor: pointer;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    padding: var(--spacing-xs) var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.top-bar__login:hover {
    background: rgba(255, 255, 255, 0.3);
}

.top-bar__user {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-white);
    text-decoration: none;
    font-size: var(--font-size-sm);
}

.top-bar__user:hover {
    opacity: 0.8;
}

/* Hide top bar login on desktop, show header login instead */
@media (min-width: 1024px) {
    .top-bar__login,
    .top-bar__user {
        display: none;
    }
}

/* ==========================================================================
   Site Header (PPGI.CN title bar - transparent background)
   ========================================================================== */

.site-header {
    position: fixed;
    top: 40px;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    background: #ffffff;
    color: var(--color-text-primary);
}

/* Adjust for WordPress admin bar */
.admin-bar .site-header {
    top: 72px; /* 32px admin bar + 40px top-bar */
}

@media screen and (max-width: 782px) {
    .admin-bar .site-header {
        top: 86px; /* 46px admin bar + 40px top-bar */
    }
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height-mobile);
    padding: 0 var(--spacing-sm);
    border-top: 1px solid #e0e0e0;
    border-bottom: 1px solid #e0e0e0;
}

.site-logo {
    display: flex;
    align-items: center;
}

.site-logo__image {
    height: 36px;
    width: auto;
}

.site-logo__text {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: #4b4b4b;
    text-decoration: none;
}

.site-logo__text:hover {
    color: #2a2a2a;
}

/* Header Navigation */
.header-nav {
    display: none;
}

.header-nav__list {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.header-nav__link {
    color: #4b4b4b;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

.header-nav__link:hover {
    color: #2a2a2a;
}

.header-nav__link.is-active {
    border-bottom: 2px solid #4b4b4b;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header-search-btn,
.header-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: #4b4b4b;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.header-search-btn:hover,
.header-menu-btn:hover {
    color: #2a2a2a;
}

.header-login-btn {
    display: none;
}

/* ==========================================================================
   Mobile Menu Dropdown (like search dropdown)
   ========================================================================== */

.mobile-menu-dropdown {
    display: none; /* Hidden by default */
    background: #ffffff;
    border-bottom: 1px solid #e0e0e0;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.mobile-menu-dropdown[hidden] {
    display: none !important;
}

/* Show dropdown when menu is active */
.site-header.is-menu-active .mobile-menu-dropdown:not([hidden]) {
    display: block;
}

.mobile-menu-dropdown__nav {
    padding: 0;
}

.mobile-menu-dropdown__list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-menu-dropdown__item {
    border-bottom: 1px dashed var(--color-border-light);
}

.mobile-menu-dropdown__item:last-child {
    border-bottom: none;
}

.mobile-menu-dropdown__link {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    text-decoration: none;
}

.mobile-menu-dropdown__link:hover {
    background-color: var(--color-bg-gray);
    color: var(--color-primary);
}

/* Hide mobile menu dropdown on desktop */
@media (min-width: 1024px) {
    .mobile-menu-dropdown {
        display: none !important;
    }
}

/* ==========================================================================
   Mobile Menu (Old - keeping for reference, can be removed)
   ========================================================================== */

.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-bg-light);
    z-index: var(--z-modal);
    transform: translateY(-100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
    max-height: 100vh;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.mobile-menu.is-active {
    transform: translateY(0);
}

.mobile-menu__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-light);
}

.mobile-menu__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.mobile-menu__search,
.mobile-menu__close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-primary);
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-menu__search:hover,
.mobile-menu__close:hover {
    color: var(--color-primary);
}

.mobile-menu__nav {
    padding: 0 var(--spacing-md);
}

.mobile-menu__list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-menu__item {
    border-bottom: 1px dashed var(--color-border-light);
}

.mobile-menu__item:last-child {
    border-bottom: none;
}

.mobile-menu__link {
    display: block;
    padding: var(--spacing-md) var(--spacing-xs);
    color: var(--color-text-primary);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-normal);
    text-decoration: none;
}

.mobile-menu__link:hover {
    color: var(--color-primary);
}

/* Mobile menu backdrop */
.mobile-menu-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-menu-backdrop.is-active {
    opacity: 1;
    visibility: visible;
}

/* ==========================================================================
   Site Footer
   ========================================================================== */

.site-footer {
    background-color: var(--color-bg-dark);
    color: var(--color-text-white);
    padding: var(--spacing-xl) 0;
    position: relative;
}

/* Products Section with Back to Top */
.site-footer__products-section {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--spacing-lg);
}

.site-footer__products {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding-left: var(--spacing-xl);
}

.site-footer__product-link {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

.site-footer__product-link:hover {
    color: var(--color-text-white);
}

/* Back to Top Button */
.site-footer__back-to-top {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    width: 36px;
    height: 42px;
    background: #ffffff;
    border: none;
    border-radius: 16px 0 0 16px;
    color: #666666;
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
}

.site-footer__back-to-top:hover {
    background: #f0f0f0;
    color: #333333;
}

.site-footer__back-to-top::before {
    content: '';
    display: block;
    width: 14px;
    height: 2px;
    background: #666666;
}

.site-footer__social {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Social Icons */
.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.social-icon:hover {
    color: var(--color-text-white);
}

/* Footer Bottom */
.site-footer__bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.site-footer__legal {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

.site-footer__legal-link {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.site-footer__legal-link:hover {
    color: var(--color-text-white);
}

.site-footer__copyright {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
    margin: 0;
    text-align: center;
}

@media (min-width: 768px) {
    .site-footer__legal {
        order: 1;
    }

    .site-footer__copyright {
        order: 2;
    }
}

/* Social Icons */
.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.social-icon:hover {
    color: var(--color-text-white);
}

/* ==========================================================================
   Main Content
   ========================================================================== */

.site-main {
    min-height: calc(100vh - var(--header-height-mobile) - 300px);
    padding: var(--spacing-lg) 0;
    padding-top: calc(40px + var(--header-height-mobile) + var(--spacing-sm));
    transition: padding-top 0.2s ease;
}

/* Adjust main content when announcement is active */
.has-announcement .site-main {
    padding-top: calc(40px + var(--header-height-mobile) + 80px + var(--spacing-sm));
}

/* Adjust for WordPress admin bar */
.admin-bar .site-main {
    padding-top: calc(32px + 40px + var(--header-height-mobile) + var(--spacing-sm));
}

.admin-bar.has-announcement .site-main {
    padding-top: calc(32px + 40px + var(--header-height-mobile) + 80px + var(--spacing-sm));
}

@media screen and (max-width: 782px) {
    .admin-bar .site-main {
        padding-top: calc(46px + 40px + var(--header-height-mobile) + var(--spacing-sm));
    }

    .admin-bar.has-announcement .site-main {
        padding-top: calc(46px + 40px + var(--header-height-mobile) + 80px + var(--spacing-sm));
    }
}

/* ==========================================================================
   Section Layout
   ========================================================================== */

.section {
    padding: var(--spacing-xl) 0;
}

.section--banner {
    padding: 0;
}

.section--prices {
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
}

.section--insights {
    padding-top: var(--spacing-sm);
}

.section--gray {
    background-color: var(--color-bg-gray);
}

.section__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.section__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.section__link {
    font-size: var(--font-size-sm);
    color: var(--color-link);
}

/* ==========================================================================
   Page Layouts
   ========================================================================== */

/* Single Column */
.layout-single {
    max-width: 800px;
    margin: 0 auto;
}

/* Two Column */
.layout-two-column {
    display: grid;
    gap: var(--spacing-xl);
}

.layout-two-column__main {
    min-width: 0;
}

.layout-two-column__sidebar {
    display: none;
}

/* ==========================================================================
   Posts List
   ========================================================================== */

.posts-list {
    display: grid;
    gap: var(--spacing-md);
}

/* ==========================================================================
   Pagination
   ========================================================================== */

.nav-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
}

.page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-sm);
    background-color: var(--color-bg-gray);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
}

.page-numbers.current {
    background-color: var(--color-primary);
    color: var(--color-text-white);
}

.page-numbers:hover:not(.current) {
    background-color: var(--color-border);
}

/* ==========================================================================
   No Content
   ========================================================================== */

.no-content {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-md);
}

.no-content h2 {
    margin-bottom: var(--spacing-md);
}

/* ==========================================================================
   Auth Page
   ========================================================================== */

.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - var(--header-height-mobile) - 200px);
    padding: var(--spacing-xl) 0;
}

.auth-card {
    width: 100%;
    max-width: 400px;
    background: var(--color-bg-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
}

.auth-card--centered {
    text-align: center;
}

.auth-card__header {
    margin-bottom: var(--spacing-xl);
}

.auth-card__logo {
    margin-bottom: var(--spacing-lg);
}

.auth-card__logo-text {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.auth-card__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
}

.auth-card__subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.auth-card__social {
    margin-bottom: var(--spacing-lg);
}

.auth-card__divider {
    display: flex;
    align-items: center;
    margin: var(--spacing-lg) 0;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

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

.auth-card__divider span {
    padding: 0 var(--spacing-md);
}

.auth-card__terms {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: var(--spacing-lg);
}

.auth-card__terms a {
    color: var(--color-link);
}

.auth-card__footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border-light);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.auth-card__signup-link {
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
}

/* Google Button */
.btn--google {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    background-color: var(--color-bg-light);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-md) var(--spacing-lg);
}

.btn--google:hover {
    background-color: var(--color-bg-gray);
    color: var(--color-text-primary);
}