/* === HEADER STYLES === */

/* Header Layout */
.header {
    position: fixed;
    top: var(--zd-admin-offset, 0px);
    left: 0;
    right: 0;
    z-index: 1002;
    padding: 12px 16px;
    margin: 0;
    pointer-events: none;
}

.header-glass {
    max-width: 1400px;
    margin: 0 auto;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 32px var(--glass-shadow), 0 0 0 1px var(--glass-border);
    position: relative;
    transition: box-shadow .2s ease;
    pointer-events: auto;
}

.header-glass .glass-filter,
.header-glass .glass-overlay,
.header-glass .glass-specular {
    border-radius: 16px;
}

.header-content {
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Sticky Header Effects */
.header.is-stuck .glass-overlay {
    background: rgba(255,255,255,0.12);
}

[data-theme="light"] .header.is-stuck .glass-overlay {
    background: rgba(255,255,255,0.9);
}

.header.is-stuck .header-glass {
    box-shadow: 0 12px 40px rgba(0,0,0,.35), 0 0 0 1px var(--glass-border);
}

.header.is-stuck .glass-filter {
    backdrop-filter: blur(18px) saturate(200%);
    -webkit-backdrop-filter: blur(18px) saturate(200%);
}

/* Logo Section */
.logo-section {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon img {
    width: 100%;
    height: 100%;
    filter: invert(1);
    transition: filter 0.3s ease;
}

[data-theme="light"] .logo-icon img {
    filter: none;
}

.logo-text {
    font-size: 16px;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-primary);
}

.logo-text a {
    color: inherit;
    text-decoration: none;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Navigation Menu */
.nav-menu {
    display: none;
}

.nav-menu-list {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 24px;
    margin: 0;
    padding: 0;
}

.nav-menu-list a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: .3s;
    position: relative;
}

.nav-menu-list a:hover {
    color: var(--accent-primary);
}

.nav-menu-list a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width .3s;
}

.nav-menu-list a:hover::after {
    width: 100%;
}

@media (min-width: 992px) {
    .nav-menu {
        display: flex;
        align-items: center;
        gap: 24px;
        margin-right: 20px;
    }
}

/* Buttons */
.login-button,
.cta-button,
.focus-toggle {
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .5px;
    cursor: pointer;
    transition: .3s;
    font-family: 'JetBrains Mono', monospace;
    border: none;
    background: none;
}

.login-button {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.login-button:hover {
    background: var(--glass-bg);
    border-color: var(--accent-primary);
    transform: translateY(-1px);
}

.cta-button {
    background: linear-gradient(135deg, var(--accent-primary), #ff8a5c);
    color: #fff;
    border: none;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255,107,53,.4);
}

.focus-toggle {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    gap: 6px;
}

.focus-toggle:hover {
    background: var(--glass-bg);
    border-color: var(--accent-secondary);
}

@media (max-width: 991px) {
    .login-button {
        display: none;
    }
}

/* Avatar */
.avatar-btn {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 2px solid var(--glass-border);
    background-size: cover;
    background-position: center;
    background-color: var(--bg-tertiary);
    cursor: pointer;
    transition: transform .2s ease, box-shadow .2s ease;
}

.avatar-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(0,0,0,.25);
}

/* Theme Toggle */
.theme-toggle {
    width: 50px;
    height: 26px;
    border-radius: 13px;
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    position: relative;
    cursor: pointer;
    transition: all .3s ease;
}

.theme-toggle::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-secondary);
    transition: .3s;
    box-shadow: 0 0 8px rgba(0,255,136,.3);
}

[data-theme="light"] .theme-toggle::before {
    transform: translateX(22px);
    background: var(--accent-primary);
    box-shadow: 0 0 8px rgba(255,107,53,.3);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: .3s;
    position: relative;
    z-index: 1003;
    width: 38px;
    height: 38px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
}

.mobile-menu-toggle:hover {
    background: var(--glass-bg);
}

.mobile-menu-toggle .line {
    display: block;
    height: 2px;
    width: 22px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    transform-origin: center;
}

.mobile-menu-toggle.active .line1 {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle.active .line2 {
    opacity: 0;
    transform: scaleX(0);
}

.mobile-menu-toggle.active .line3 {
    transform: translateY(-7px) rotate(-45deg);
}

@media (min-width: 992px) {
    .mobile-menu-toggle {
        display: none;
    }
}

/* Mobile Command Menu */
.zd-command-menu {
    position: fixed;
    top: 16px;
    left: 16px;
    right: 16px;
    z-index: 1001;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.98);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.zd-command-menu.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0) scale(1);
}

.zd-command-menu .header-glass {
    margin-top: calc(var(--zd-header-space, 84px) - 8px);
}

.zd-command-menu-content {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-height: calc(80vh - var(--zd-header-space, 84px));
    overflow-y: auto;
}

.zd-command-menu-nav ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin: 0;
    padding: 0;
}

.zd-command-menu-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-secondary);
    transition: all .3s ease;
}

.zd-command-menu-nav a:hover {
    background: var(--glass-bg);
    color: var(--text-primary);
}

.nav-icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
    font-style: normal;
    transition: transform .3s ease;
}

.zd-command-menu-nav a:hover .nav-icon {
    transform: scale(1.2) rotate(-5deg);
}

.nav-text {
    font-size: 14px;
    font-weight: 500;
}

.zd-command-menu-actions {
    padding-top: 16px;
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.mobile-theme-toggle {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mobile-theme-label {
    font-size: 14px;
    color: var(--text-tertiary);
}

.mobile-auth-buttons {
    display: flex;
    gap: 8px;
}

/* Header Spacer */
.header-spacer {
    height: var(--zd-header-space, 84px);
}

/* Page Wrapper Effects */
.zd-page-wrapper {
    position: relative;
    z-index: 5;
    background: transparent;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.zd-menu-active .zd-page-wrapper {
    transform: scale(0.96);
    opacity: 0.85;
}

/* Focus Mode Controls */
.focus-controls {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1001;
    display: flex;
    gap: 8px;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 25px;
    padding: 8px 12px;
    box-shadow: 0 8px 32px var(--glass-shadow);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

[data-focus="true"] .focus-controls {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.focus-controls.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.focus-control-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 6px 10px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.focus-control-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.focus-exit-mobile {
    background: rgba(255, 107, 53, 0.2);
    color: var(--accent-primary);
}

/* Mobile Focus Controls */
@media (max-width: 768px) {
    .focus-controls {
        bottom: auto;
        top: calc(var(--zd-header-space, 84px) + 20px);
        right: 20px;
        left: 20px;
        justify-content: space-between;
        flex-wrap: wrap;
        border-radius: 12px;
        padding: 12px;
        transition: all 0.3s ease, opacity 0.3s ease, transform 0.3s ease;
    }
    
    .focus-controls.mobile-scroll-hidden {
        transform: translateY(-120px);
        opacity: 0.7;
    }
    
    .focus-controls.mobile-collapsed .focus-control-btn:not(.focus-toggle-mobile):not(.focus-exit-mobile) {
        display: none;
    }
    
    .focus-toggle-mobile {
        order: -1;
    }
    
    .focus-exit-mobile {
        order: 10;
    }
}

/* Font Size Classes */
.font-size-small {
    font-size: 14px;
}

.font-size-small .article-content {
    font-size: 14px;
}

.font-size-large {
    font-size: 18px;
}

.font-size-large .article-content {
    font-size: 18px;
}

.font-size-xl {
    font-size: 20px;
}

.font-size-xl .article-content {
    font-size: 20px;
}

/* Column Width Classes */
.column-narrow .article-content {
    max-width: 600px;
    margin: 0 auto;
}

.column-wide .article-content {
    max-width: 900px;
    margin: 0 auto;
}

/* Line Height Classes */
.line-height-tight .article-content {
    line-height: 1.4;
}

.line-height-relaxed .article-content {
    line-height: 1.8;
}

/* Reading Progress */
.reading-progress {
    position: fixed;
    top: var(--zd-admin-offset, 0px);
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    z-index: 1003;
    transition: width 0.3s ease;
    opacity: 0;
    box-shadow: 0 0 10px rgba(255, 107, 53, 0.5);
}

[data-focus="true"] .reading-progress {
    opacity: 1;
}

/* Responsive Header */
@media (max-width: 991px) {
    .header-content {
        padding: 10px 16px;
    }
    
    .logo-text,
    .cta-button {
        font-size: 11px;
    }
    
    .cta-button {
        padding: 6px 12px;
    }
}