/**
 * Nebula Theme - Header & Footer Styles
 * Version: 2.0.6
 * 从 header.php 内联提取的样式（动态变量部分保留在 header.php 中）
 */

/* Skip Link */
.nebula-skip-link {
    position: absolute;
    top: -100%;
    left: 16px;
    padding: 8px 16px;
    background: var(--nebula-primary);
    color: #fff;
    border-radius: var(--nebula-radius-md);
    font-weight: 500;
    text-decoration: none !important;
    transition: top 0.3s ease;
    z-index: 10000;
}
.nebula-skip-link:focus {
    top: 8px;
    outline: 3px solid var(--nebula-primary);
    outline-offset: 2px;
}

/* Page Wrapper */
.nebula-page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ============================
   Header Container
   ============================ */
.nebula-header {
    height: var(--nebula-header-height, 64px);
    background: var(--nebula-header-bg, #ffffff);
    border-bottom: 1px solid var(--nebula-header-border, #e2e8f0);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: var(--nebula-z-sticky, 200);
    transition: box-shadow var(--nebula-transition, 0.2s ease);
}
.nebula-header.scrolled {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}
[data-theme="dark"] .nebula-header.scrolled,
body.dark-mode .nebula-header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.nebula-header .container,
.nebula-header .nebula-container {
    max-width: var(--nebula-container-max);
    margin: 0 auto;
    padding: 0 16px;
    height: 100%;
}

.nebula-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    gap: 24px;
}

/* Logo */
.nebula-header__logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}
.nebula-header__logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
}
.nebula-header__logo img {
    height: 40px;
    width: auto;
    display: block;
}
.nebula-header__logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--nebula-primary);
    margin-left: 8px;
}
.nebula-header__logo-dark { display: none !important; }
[data-theme="dark"] .nebula-header__logo-light,
body.dark-mode .nebula-header__logo-light { display: none !important; }
[data-theme="dark"] .nebula-header__logo-dark,
body.dark-mode .nebula-header__logo-dark { display: inline-block !important; }

/* Main Navigation */
.nebula-header__nav {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}
.nebula-nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}
.nebula-nav-menu li { position: relative; }
.nebula-nav-menu a {
    display: block;
    padding: 8px 16px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--nebula-text-secondary, #64748b);
    text-decoration: none;
    border-radius: var(--nebula-radius-md, 8px);
    transition: all var(--nebula-transition, 0.2s ease);
}
.nebula-nav-menu a:hover,
.nebula-nav-menu li.current-menu-item > a,
.nebula-nav-menu li.current-menu-ancestor > a {
    color: var(--nebula-primary);
    background: var(--nebula-bg-hover, rgba(14, 165, 233, 0.08));
}

/* Submenu */
.nebula-nav-menu .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--nebula-header-bg, #ffffff);
    border: 1px solid var(--nebula-border, #e2e8f0);
    border-radius: var(--nebula-radius-lg, 12px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    list-style: none;
    margin: 0;
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--nebula-transition, 0.2s ease);
    z-index: 100;
}
.nebula-nav-menu li:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.nebula-nav-menu .sub-menu a { padding: 10px 16px; }
.nebula-nav-menu .sub-menu .sub-menu {
    top: -8px;
    left: 100%;
}

/* Header Actions */
.nebula-header__actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

/* Search Box */
.nebula-header__search { position: relative; }
.nebula-header__search form {
    display: flex;
    align-items: center;
    background: var(--nebula-bg-secondary, #f8fafc);
    border: 1px solid var(--nebula-border, #e2e8f0);
    border-radius: 20px;
    padding: 4px 4px;
    transition: all var(--nebula-transition, 0.2s ease);
}
.nebula-header__search form:focus-within {
    border-color: var(--nebula-primary);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}
.nebula-header__search-input {
    border: none;
    background: transparent;
    padding: 6px 12px;
    font-size: 0.875rem;
    color: var(--nebula-text-primary, #1e293b);
    width: 180px;
    outline: none;
}
.nebula-header__search-input::placeholder { color: var(--nebula-text-muted, #94a3b8); }
.nebula-header__search-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    border-radius: 50%;
    color: var(--nebula-text-secondary, #64748b);
    cursor: pointer;
    transition: all var(--nebula-transition, 0.2s ease);
}
.nebula-header__search-btn:hover {
    color: var(--nebula-primary);
    background: var(--nebula-bg-hover, rgba(14, 165, 233, 0.08));
}

/* User Avatar */
.nebula-header__user { position: relative; }
.nebula-header__user-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--nebula-bg-secondary, #f8fafc);
    border: 1px solid var(--nebula-border, #e2e8f0);
    border-radius: 50%;
    color: var(--nebula-text-secondary, #64748b);
    cursor: pointer;
    transition: all var(--nebula-transition, 0.2s ease);
    overflow: hidden;
}
.nebula-header__user-btn:hover {
    border-color: var(--nebula-primary);
    color: var(--nebula-primary);
}
.nebula-header__user-btn img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.nebula-header__user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    background: var(--nebula-header-bg, #ffffff);
    border: 1px solid var(--nebula-border, #e2e8f0);
    border-radius: var(--nebula-radius-lg, 12px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--nebula-transition, 0.2s ease);
    z-index: 100;
}
.nebula-header__user:hover .nebula-header__user-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.nebula-header__user-dropdown a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    font-size: 0.875rem;
    color: var(--nebula-text-primary, #1e293b);
    text-decoration: none;
    transition: background var(--nebula-transition, 0.2s ease);
}
.nebula-header__user-dropdown a:hover { background: var(--nebula-bg-hover, rgba(14, 165, 233, 0.08)); }

/* Dark Mode Toggle */
.nebula-header__theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: 1px solid var(--nebula-border, #e2e8f0);
    border-radius: 50%;
    color: var(--nebula-text-secondary, #64748b);
    cursor: pointer;
    transition: all var(--nebula-transition, 0.2s ease);
}
.nebula-header__theme-toggle:hover {
    border-color: var(--nebula-primary);
    color: var(--nebula-primary);
    background: var(--nebula-bg-hover, rgba(14, 165, 233, 0.08));
}

.nebula-header__theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .nebula-header__theme-toggle .icon-moon,
body.dark-mode .nebula-header__theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .nebula-header__theme-toggle .icon-sun,
body.dark-mode .nebula-header__theme-toggle .icon-sun { display: block; }

/* Contact Button */
.nebula-header__contact-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--nebula-primary);
    color: #fff;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 20px;
    text-decoration: none;
    transition: all var(--nebula-transition, 0.2s ease);
}
.nebula-header__contact-btn:hover {
    background: var(--nebula-primary-hover, #0284c7);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}
@media (max-width: 768px) { .nebula-header__contact-btn { display: none; } }

/* Hamburger */
.nebula-header__hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    gap: 5px;
    padding: 0;
}
.nebula-header__hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--nebula-text-primary, #1e293b);
    border-radius: 2px;
    transition: all 0.3s ease;
}
.nebula-header__hamburger.is-active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nebula-header__hamburger.is-active span:nth-child(2) { opacity: 0; }
.nebula-header__hamburger.is-active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile Drawer */
.nebula-mobile-nav {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    width: min(300px, 85vw);
    height: 100vh;
    background: var(--nebula-header-bg, #ffffff);
    z-index: var(--nebula-z-drawer, 9999);
    transform: translateX(-100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    overflow-x: hidden;
}
.nebula-mobile-nav.is-open {
    transform: translateX(0);
    box-shadow: 6px 0 24px rgba(0, 0, 0, 0.15);
}
[data-theme="dark"] .nebula-mobile-nav.is-open,
body.dark-mode .nebula-mobile-nav.is-open {
    box-shadow: 6px 0 24px rgba(0, 0, 0, 0.4);
}
.nebula-mobile-nav__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
    color: #fff;
}
.nebula-mobile-nav__header-title { font-size: 1.1rem; font-weight: 600; }
.nebula-mobile-nav__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.2);
    border: none;
    border-radius: 50%;
    color: #fff;
    cursor: pointer;
    transition: all 0.2s ease;
}
.nebula-mobile-nav__close:hover {
    background: rgba(255,255,255,0.3);
    transform: rotate(90deg);
}
.nebula-mobile-nav__menu {
    list-style: none;
    margin: 0;
    padding: 12px 0;
}
.nebula-mobile-nav__menu li a {
    display: flex;
    align-items: center;
    padding: 14px 20px;
    font-size: 0.95rem;
    color: var(--nebula-text-primary, #1e293b);
    text-decoration: none;
    border-bottom: 1px solid var(--nebula-border, #e2e8f0);
    transition: background var(--nebula-transition, 0.2s ease);
}
.nebula-mobile-nav__menu li a:hover {
    background: var(--nebula-bg-hover, rgba(14, 165, 233, 0.08));
    color: var(--nebula-primary);
}
.nebula-mobile-nav__menu .sub-menu {
    list-style: none;
    padding-left: 20px;
    background: var(--nebula-bg-secondary, #f8fafc);
}
.nebula-mobile-nav__footer {
    padding: 20px;
    border-top: 1px solid var(--nebula-border, #e2e8f0);
}
.nebula-mobile-nav__search { margin-bottom: 16px; }
.nebula-mobile-nav__search form {
    display: flex;
    align-items: center;
    background: var(--nebula-bg-secondary, #f8fafc);
    border: 1px solid var(--nebula-border, #e2e8f0);
    border-radius: var(--nebula-radius-lg, 12px);
    padding: 4px;
}
.nebula-mobile-nav__search-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 10px 12px;
    font-size: 0.9rem;
    color: var(--nebula-text-primary, #1e293b);
    outline: none;
}
.nebula-mobile-nav__search-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--nebula-primary);
    border: none;
    border-radius: var(--nebula-radius-md, 8px);
    color: #fff;
    cursor: pointer;
}
.nebula-mobile-nav__actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}
.nebula-mobile-nav__contact { padding: 0 20px 16px; }
.nebula-mobile-contact-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px 20px;
    background: var(--nebula-primary);
    color: #fff;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--nebula-radius-lg, 12px);
    text-decoration: none;
    transition: all var(--nebula-transition, 0.2s ease);
}
.nebula-mobile-contact-btn:hover { background: var(--nebula-primary-hover, #0284c7); }

/* Overlay */
.nebula-overlay {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: var(--nebula-z-overlay, 9998);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}
.nebula-overlay.is-active {
    opacity: 1;
    visibility: visible;
}

/* Responsive Header */
@media (max-width: 1024px) {
    .nebula-header__nav { display: none; }
    .nebula-header__hamburger { display: flex; }
    .nebula-header__search-input { width: 140px; }
}
@media (max-width: 768px) {
    .nebula-header { height: 48px; }
    .nebula-header__search { display: none; }
    .nebula-header__logo-text { font-size: 1.1rem; }
}
@media (max-width: 480px) {
    .nebula-header__actions { gap: 4px; }
    .nebula-header__user-btn,
    .nebula-header__theme-toggle { width: 34px; height: 34px; }
}

/* Main Content */
.nebula-main { flex: 1; }

/* ============================
   Footer
   ============================ */
.nebula-footer {
    background: var(--nebula-bg-secondary, #f8fafc);
    border-top: 1px solid var(--nebula-border, #e2e8f0);
}
.nebula-footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding: 48px 0 32px;
}
.nebula-footer__brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
}
.nebula-footer__logo { height: 40px; width: auto; display: block; }
.nebula-footer__tagline {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.875rem;
    color: var(--nebula-text-secondary, #64748b);
    text-align: left;
}
.nebula-footer__links h4 {
    margin: 0 0 16px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--nebula-text-primary, #1e293b);
}
.nebula-footer__links ul { list-style: none; margin: 0; padding: 0; }
.nebula-footer__links li { margin-bottom: 10px; }
.nebula-footer__links a {
    font-size: 0.875rem;
    color: var(--nebula-text-secondary, #64748b);
    text-decoration: none;
    transition: color var(--nebula-transition, 0.2s ease);
}
.nebula-footer__links a:hover { color: var(--nebula-primary); }
.nebula-footer__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.nebula-footer__tag {
    display: inline-block;
    padding: 4px 10px;
    font-size: 0.75rem;
    color: var(--nebula-text-secondary, #64748b);
    background: var(--nebula-bg-secondary, #f8fafc);
    border-radius: 12px;
    text-decoration: none;
    transition: all var(--nebula-transition, 0.2s ease);
}
.nebula-footer__tag:hover {
    color: #fff;
    background: var(--nebula-primary);
}
.nebula-footer__contact { margin-top: 16px; }
.nebula-footer__tel {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--nebula-primary);
    text-decoration: none;
}
.nebula-footer__tel:hover { text-decoration: underline; }
.nebula-footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    border-top: 1px solid var(--nebula-border, #e2e8f0);
    font-size: 0.875rem;
    color: var(--nebula-text-muted, #94a3b8);
}
.nebula-footer__bottom a {
    color: var(--nebula-text-secondary, #64748b);
    text-decoration: none;
}
.nebula-footer__bottom a:hover { color: var(--nebula-primary); }
.nebula-footer__bottom-right {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Float Actions */
.nebula-float-actions {
    position: fixed;
    width: 100%;
    right: 20px;
    bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 100;
}
.nebula-float-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--nebula-header-bg, #ffffff);
    border: 1px solid var(--nebula-border, #e2e8f0);
    border-radius: 50%;
    color: var(--nebula-text-secondary, #64748b);
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all var(--nebula-transition, 0.2s ease);
}
.nebula-float-btn:hover {
    background: var(--nebula-primary);
    border-color: var(--nebula-primary);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.3);
}

/* Footer Responsive */
@media (max-width: 1024px) {
    .nebula-footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    .nebula-footer__brand { grid-column: 1 / -1; }
}
@media (max-width: 768px) {
    .nebula-footer__grid {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 32px 0 24px;
    }
    .nebula-footer__bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

/* Fix: Add top spacing for sticky header */
.nebula-main { flex: 1; padding-top: var(--nebula-header-height, 64px); }
@media (max-width: 768px) { .nebula-main { padding-top: 48px; } }
/* Fix: Body padding for fixed header */
body { padding-top: var(--nebula-header-height, 64px) !important; }
@media (max-width: 768px) { body { padding-top: 48px; } }