/**
 * Nebula Theme - Header Optimization CSS
 * Extracted from header.php
 * Note: CSS variables (--nebula-container-max) are set inline in header.php
 */

/* Skip Link - Visually hidden but accessible to screen readers */
.nebula-skip-link {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
.nebula-skip-link:focus {
    position: fixed;
    top: 8px;
    left: 16px;
    width: auto;
    height: auto;
    padding: 8px 16px;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
    background: var(--nebula-primary);
    color: #fff;
    border-radius: var(--nebula-radius-md);
    font-weight: 500;
    text-decoration: none;
    z-index: 10000;
    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);
    background: var(--nebula-header-bg);
    border-bottom: 1px solid var(--nebula-header-border);
    position: relative;
    z-index: var(--nebula-z-sticky);
}
.nebula-header.scrolled {
    box-shadow: 0 4px 20px rgba(14, 165, 233, 0.15);
    border-bottom-color: rgba(14, 165, 233, 0.2);
}
[data-theme="dark"] .nebula-header.scrolled,
body.dark-mode .nebula-header.scrolled {
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    border-bottom-color: rgba(14, 165, 233, 0.3);
}

.nebula-header .container,
.nebula-header .nebula-container,
.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 (PC)
   ============================ */
.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);
    text-decoration: none;
    border-radius: var(--nebula-radius-md);
    transition: all var(--nebula-transition);
    position: relative;
}
.nebula-nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: calc(100% - 24px);
    height: 2px;
    background: linear-gradient(90deg, var(--nebula-primary), #0284C7);
    border-radius: 1px;
    transition: transform 0.25s ease;
}
.nebula-nav-menu a:hover::after,
.nebula-nav-menu li.current-menu-item > a::after,
.nebula-nav-menu li.current-menu-ancestor > a::after {
    transform: translateX(-50%) scaleX(1);
}
.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);
}
/* Submenu */
.nebula-nav-menu .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--nebula-header-bg);
    border: 1px solid var(--nebula-border);
    border-radius: var(--nebula-radius-xl);
    box-shadow: 0 10px 40px rgba(14, 165, 233, 0.15);
    list-style: none;
    margin: 0;
    padding: 10px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--nebula-transition);
    z-index: 100;
}
.nebula-nav-menu li:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(4px);
}
.nebula-nav-menu .sub-menu a {
    padding: 10px 16px;
    border-radius: var(--nebula-radius-md);
}
.nebula-nav-menu .sub-menu a:hover {
    background: var(--nebula-bg-hover);
}
.nebula-nav-menu .sub-menu .sub-menu {
    top: -10px;
    left: 100%;
}

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

/* Search Box - Simplified */
.nebula-header__search {
    position: relative;
}
.nebula-header__search form {
    display: flex;
    align-items: center;
    background: var(--nebula-bg-secondary);
    border: 1px solid var(--nebula-border);
    border-radius: var(--nebula-radius-md);
    padding: 2px;
    transition: all var(--nebula-transition);
}
.nebula-header__search form:focus-within {
    border-color: var(--nebula-primary);
    box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.15);
}
.nebula-header__search-input {
    border: none;
    background: transparent;
    padding: 6px 10px;
    font-size: 0.8rem;
    color: var(--nebula-text-primary);
    width: 140px;
    outline: none;
}
.nebula-header__search-input::placeholder {
    color: var(--nebula-text-muted);
}
.nebula-header__search-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--nebula-primary);
    border: none;
    border-radius: var(--nebula-radius-sm);
    color: #fff;
    cursor: pointer;
    transition: all var(--nebula-transition);
}
.nebula-header__search-btn:hover {
    background: var(--nebula-primary-hover);
}

/* 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);
    border: 1px solid var(--nebula-border);
    border-radius: 50%;
    color: var(--nebula-text-secondary);
    cursor: pointer;
    transition: all var(--nebula-transition);
    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: 180px;
    background: var(--nebula-header-bg);
    border: 1px solid var(--nebula-border);
    border-radius: var(--nebula-radius-lg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--nebula-transition);
    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);
    text-decoration: none;
    transition: background var(--nebula-transition);
}
.nebula-header__user-dropdown a:hover {
    background: var(--nebula-bg-hover);
}

/* 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);
    border-radius: 50%;
    color: var(--nebula-text-secondary);
    cursor: pointer;
    transition: all var(--nebula-transition);
}
.nebula-header__theme-toggle:hover {
    border-color: var(--nebula-primary);
    color: var(--nebula-primary);
    background: var(--nebula-bg-hover);
}

/* Contact Button (Enterprise) */
.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);
}
.nebula-header__contact-btn:hover {
    background: var(--nebula-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}
@media (max-width: 768px) {
    .nebula-header__contact-btn {
        display: none;
    }
}
.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;
}

/* ============================
   Hamburger Menu (Mobile)
   ============================ */
.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);
    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;
    top: 0;
    left: 0;
    width: min(300px, 85vw);
    height: 100vh;
    background: var(--nebula-header-bg);
    z-index: var(--nebula-z-drawer);
    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);
    text-decoration: none;
    border-bottom: 1px solid var(--nebula-border);
    transition: background var(--nebula-transition);
}
.nebula-mobile-nav__menu li a:hover {
    background: var(--nebula-bg-hover);
    color: var(--nebula-primary);
}
.nebula-mobile-nav__menu .sub-menu {
    list-style: none;
    padding-left: 20px;
    background: var(--nebula-bg-secondary);
}
.nebula-mobile-nav__footer {
    padding: 20px;
    border-top: 1px solid var(--nebula-border);
}
.nebula-mobile-nav__search {
    margin-bottom: 16px;
}
.nebula-mobile-nav__search form {
    display: flex;
    align-items: center;
    background: var(--nebula-bg-secondary);
    border: 1px solid var(--nebula-border);
    border-radius: var(--nebula-radius-lg);
    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);
    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);
    color: #fff;
    cursor: pointer;
}
.nebula-mobile-nav__actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

/* Mobile Contact Button */
.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);
    text-decoration: none;
    transition: all var(--nebula-transition);
}
.nebula-mobile-contact-btn:hover {
    background: var(--nebula-primary-hover);
}

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

/* ============================
   Responsive
   ============================ */
@media (max-width: 1024px) {
    .nebula-header__nav {
        display: none;
    }
    .nebula-header__hamburger {
        display: flex;
    }
    .nebula-header__search-input {
        width: 100px;
    }
}

@media (max-width: 768px) {
    .nebula-header {
        height: 56px;
    }
    .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;
}
.nebula-main .container {
    max-width: var(--nebula-container-max);
    margin: 0 auto;
    padding: 0 16px;
}

/* Footer */
.nebula-footer {
    background: linear-gradient(180deg, var(--nebula-bg-secondary) 0%, var(--nebula-bg) 100%);
    border-top: 1px solid var(--nebula-border);
    position: relative;
}
.nebula-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--nebula-primary), #0284C7, var(--nebula-primary));
    opacity: 0.6;
}

/* ============================
   Footer Styles
   ============================ */
.nebula-footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding: 56px 0 36px;
}
.nebula-footer__brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
}
.nebula-footer__logo {
    height: 44px;
    width: auto;
    display: block;
    transition: transform 0.3s ease;
}
.nebula-footer__logo:hover {
    transform: scale(1.03);
}
.nebula-footer__tagline {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.9rem;
    color: var(--nebula-text-secondary);
    text-align: left;
    line-height: 1.5;
}
.nebula-footer__links h4 {
    margin: 0 0 20px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--nebula-text-primary);
    position: relative;
    padding-bottom: 10px;
}
.nebula-footer__links h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 2px;
    background: linear-gradient(90deg, var(--nebula-primary), #0284C7);
    border-radius: 1px;
}
.nebula-footer__links ul {
    list-style: none;
    margin: 0;
    padding: 0;
}
.nebula-footer__links li {
    margin-bottom: 12px;
}
.nebula-footer__links a {
    font-size: 0.875rem;
    color: var(--nebula-text-secondary);
    text-decoration: none;
    transition: all var(--nebula-transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.nebula-footer__links a::before {
    content: '';
    width: 4px;
    height: 4px;
    background: var(--nebula-primary);
    border-radius: 50%;
    opacity: 0;
    transform: translateX(-4px);
    transition: all 0.2s ease;
}
.nebula-footer__links a:hover {
    color: var(--nebula-primary);
    padding-left: 4px;
}
.nebula-footer__links a:hover::before {
    opacity: 1;
    transform: translateX(0);
}

/* Footer Tags */
.nebula-footer__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.nebula-footer__tag {
    display: inline-block;
    padding: 5px 12px;
    font-size: 0.75rem;
    color: var(--nebula-text-secondary);
    background: var(--nebula-bg-secondary);
    border: 1px solid var(--nebula-border);
    border-radius: 16px;
    text-decoration: none;
    transition: all var(--nebula-transition);
}
.nebula-footer__tag:hover {
    color: #fff;
    background: linear-gradient(135deg, var(--nebula-primary), #0284C7);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.25);
}

/* Footer Contact */
.nebula-footer__contact {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px dashed var(--nebula-border);
}
.nebula-footer__tel {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--nebula-primary);
    text-decoration: none;
    transition: all var(--nebula-transition);
}
.nebula-footer__tel:hover {
    color: var(--nebula-primary-hover);
    transform: translateX(4px);
}

.nebula-footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 28px 0;
    border-top: 1px solid var(--nebula-border);
    font-size: 0.875rem;
    color: var(--nebula-text-muted);
    background: rgba(0, 0, 0, 0.02);
}
.nebula-footer__bottom a {
    color: var(--nebula-text-secondary);
    text-decoration: none;
    transition: color var(--nebula-transition);
}
.nebula-footer__bottom a:hover {
    color: var(--nebula-primary);
}
.nebula-footer__bottom-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ============================
   Float Actions
   ============================ */
.nebula-float-actions {
    position: fixed;
    right: 24px;
    bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 100;
}
.nebula-float-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    background: var(--nebula-header-bg);
    border: 1px solid var(--nebula-border);
    border-radius: 50%;
    color: var(--nebula-text-secondary);
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}
.nebula-float-btn:hover {
    background: linear-gradient(135deg, var(--nebula-primary), #0284C7);
    border-color: transparent;
    color: #fff;
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 24px rgba(14, 165, 233, 0.35);
}
.nebula-float-btn:active {
    transform: translateY(-1px) scale(1);
}

/* ============================
   Responsive Footer
   ============================ */
@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: 28px;
        padding: 28px 0 24px;
    }
    .nebula-footer__bottom {
        flex-direction: column;
        gap: 14px;
        text-align: center;
        padding: 20px 0;
    }
}
.nebula-footer .container {
    max-width: var(--nebula-container-max);
    margin: 0 auto;
    padding: 0 16px;
}

/* ============================
   Typography System
   ============================ */
/* Typography Base */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--nebula-font-bold);
    line-height: var(--nebula-leading-tight);
    color: var(--nebula-text-primary);
}

h1 { font-size: var(--nebula-text-4xl); }
h2 { font-size: var(--nebula-text-3xl); }
h3 { font-size: var(--nebula-text-2xl); }
h4 { font-size: var(--nebula-text-xl); }
h5 { font-size: var(--nebula-text-lg); }
h6 { font-size: var(--nebula-text-base); }

p {
    line-height: var(--nebula-leading-relaxed);
    color: var(--nebula-text-secondary);
}

a {
    transition: color var(--nebula-duration-fast) var(--nebula-ease-default);
}

/* Animation Classes */
.nebula-fade-in {
    animation: nebulaFadeIn 0.4s var(--nebula-ease-out) forwards;
}
.nebula-slide-up {
    animation: nebulaSlideUp 0.4s var(--nebula-ease-out) forwards;
}
.nebula-slide-down {
    animation: nebulaSlideDown 0.4s var(--nebula-ease-out) forwards;
}
.nebula-scale-in {
    animation: nebulaScaleIn 0.3s var(--nebula-ease-out) forwards;
}

@keyframes nebulaFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes nebulaSlideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes nebulaSlideDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes nebulaScaleIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

/* Hover Lift Effect */
.nebula-hover-lift {
    transition: transform var(--nebula-duration-normal) var(--nebula-ease-out),
                box-shadow var(--nebula-duration-normal) var(--nebula-ease-out);
}
.nebula-hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--nebula-shadow-card-hover);
}

/* Hover Glow Effect */
.nebula-hover-glow {
    transition: box-shadow var(--nebula-duration-normal) var(--nebula-ease-out);
}
.nebula-hover-glow:hover {
    box-shadow: 0 0 20px rgba(14, 165, 233, 0.2);
}