/* =========================================
   Header Styles
   ========================================= */

.sp-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13, 17, 23, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--sp-border);
    transition: var(--sp-transition-normal);
}

[data-sp-mode="light"] .sp-header {
    background: rgba(248, 250, 252, 0.9);
}

.sp-header.scrolled {
    background: var(--sp-bg-secondary);
    box-shadow: 0 4px 20px var(--sp-shadow-color);
}

.sp-header-inner {
    position: relative;
}

.sp-header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--sp-header-height);
    gap: var(--sp-spacing-xl);
}

/* Logo */
.sp-logo {
    flex-shrink: 0;
}

.sp-logo-link {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: 700;
    color: var(--sp-text-primary);
}

.sp-logo-link:hover {
    color: var(--sp-text-primary);
}

.sp-logo-icon {
    width: 42px;
    height: 42px;
    background: var(--sp-primary-gradient);
    border-radius: var(--sp-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: white;
    box-shadow: 0 4px 16px rgba(var(--sp-primary-rgb), 0.3);
}

.sp-logo-text {
    background: linear-gradient(135deg, var(--sp-text-primary) 0%, var(--sp-text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation */
.sp-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.sp-nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.sp-nav-menu li {
    position: relative;
}

.sp-nav-menu a {
    display: block;
    padding: 10px 20px;
    border-radius: var(--sp-radius-sm);
    color: var(--sp-text-secondary);
    font-weight: 500;
    font-size: 15px;
    transition: var(--sp-transition-fast);
}

.sp-nav-menu a:hover,
.sp-nav-menu .current-menu-item>a,
.sp-nav-menu .current_page_item>a {
    color: var(--sp-text-primary);
    background: var(--sp-bg-tertiary);
}

.sp-nav-menu .current-menu-item>a,
.sp-nav-menu .current_page_item>a {
    color: var(--sp-primary);
}

/* Dropdown menus */
.sp-nav-menu .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--sp-bg-card);
    border: 1px solid var(--sp-border);
    border-radius: var(--sp-radius-md);
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--sp-transition-fast);
    box-shadow: 0 8px 32px var(--sp-shadow-color);
    list-style: none;
}

.sp-nav-menu li:hover>.sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.sp-nav-menu .sub-menu a {
    padding: 10px 16px;
}

/* Header Actions */
.sp-header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.sp-header-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--sp-radius-sm);
    background: transparent;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sp-text-secondary);
    cursor: pointer;
    transition: var(--sp-transition-fast);
    font-size: 20px;
}

.sp-header-btn:hover {
    color: var(--sp-primary);
    background: var(--sp-bg-tertiary);
}

/* Mode Toggle */
.sp-mode-toggle {
    position: relative;
}

.sp-mode-toggle .sp-icon-light {
    display: none;
}

[data-sp-mode="light"] .sp-mode-toggle .sp-icon-dark {
    display: none;
}

[data-sp-mode="light"] .sp-mode-toggle .sp-icon-light {
    display: block;
}

/* Mobile Toggle */
.sp-mobile-toggle {
    display: none;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.sp-hamburger {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.sp-hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--sp-text-primary);
    border-radius: 1px;
    transition: var(--sp-transition-fast);
}

.sp-mobile-toggle[aria-expanded="true"] .sp-hamburger span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.sp-mobile-toggle[aria-expanded="true"] .sp-hamburger span:nth-child(2) {
    opacity: 0;
}

.sp-mobile-toggle[aria-expanded="true"] .sp-hamburger span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation */
.sp-mobile-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--sp-bg-secondary);
    border-bottom: 1px solid var(--sp-border);
    padding: var(--sp-spacing-lg);
    max-height: calc(100vh - var(--sp-header-height));
    overflow-y: auto;
}

.sp-mobile-nav.open {
    display: block;
}

.sp-mobile-menu {
    list-style: none;
    margin: 0 0 var(--sp-spacing-lg);
    padding: 0;
}

.sp-mobile-menu a {
    display: block;
    padding: 12px 16px;
    border-radius: var(--sp-radius-sm);
    color: var(--sp-text-secondary);
    font-weight: 500;
}

.sp-mobile-menu a:hover {
    background: var(--sp-bg-tertiary);
    color: var(--sp-text-primary);
}

.sp-mobile-menu .sub-menu {
    list-style: none;
    padding-left: 16px;
}

.sp-mobile-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sp-btn-block {
    width: 100%;
}

/* Responsive */
@media (max-width: 1024px) {
    .sp-nav {
        display: none;
    }

    .sp-mobile-toggle {
        display: flex;
    }
}

@media (max-width: 768px) {
    .sp-header-actions .sp-btn:not(.sp-mobile-toggle):not(.sp-mode-toggle) {
        display: none;
    }
}