/**
 * MyApps Theme - Header Styles
 * Version: 1.0.0
 * Mobile-first responsive design
 */

/* ===============================================
   CSS Variables
   =============================================== */
:root {
    --header-height: 60px;
    --header-height-mobile: 56px;
    --menu-width: 320px;
    --animation-speed: 0.3s;
    --overlay-bg: rgba(0, 0, 0, 0.5);

    /* Colors */
    --primary: #fe2f05;
    --secondary: #ff6d10;
    --dark: #1f2937;
    --gray-light: #f3f4f6;
    --gray: #6b7280;
    --white: #ffffff;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
}

/* ===============================================
   Reset
   =============================================== */
.site-header *,
.mobile-menu * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===============================================
   Header Container
   =============================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    width: 100%;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--animation-speed);
}

.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

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

/* ===============================================
   Logo
   =============================================== */
.site-branding {
    display: flex;
    align-items: center;
}

.site-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    font-family: 'Courier New', monospace;
}

.logo-icon {
    margin-right: 0.5rem;
    display: inline-flex;
    align-items: center;
}

/* Logo Icon SVG Animation */
.logo-icon svg {
    display: block;
    transition: transform 0.3s ease;
}

/* Blinking cursor animation - matching header.txt */
.logo-icon .cursor {
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 0;
    }
}

/* Hover effect for logo icon */
.site-logo:hover .logo-icon svg {
    transform: scale(1.1);
}

/* Terminal window glow effect on hover */
.site-logo:hover .logo-icon svg rect:first-of-type {
    filter: drop-shadow(0 0 8px rgba(254, 47, 5, 0.4));
}

.logo-text {
    display: flex;
    align-items: baseline;
}

.logo-text .brand-my {
    color: var(--primary);
}

.logo-text .brand-apps {
    color: var(--dark);
}

.logo-text .brand-dot {
    color: var(--gray);
    margin: 0 1px;
}

.logo-text .brand-vn {
    color: var(--secondary);
}

/* ===============================================
   Primary Navigation (Desktop)
   =============================================== */
.primary-navigation {
    display: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

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

.nav-menu a {
    color: var(--dark);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: color var(--animation-speed);
    position: relative;
}

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

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

.nav-menu .current-menu-item > a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary);
}

/* Desktop Dropdown Submenu */
.nav-menu .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--white);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    padding: 0.5rem 0;
    margin-top: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--animation-speed);
    list-style: none;
}

.nav-menu .menu-item-has-children:hover .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-menu .sub-menu li {
    margin: 0;
}

.nav-menu .sub-menu a {
    display: block;
    padding: 0.625rem 1.25rem;
    color: var(--dark);
    font-size: 0.9rem;
    font-weight: 400;
    transition: all var(--animation-speed);
}

.nav-menu .sub-menu a:hover {
    color: var(--primary);
    background: var(--gray-light);
}

/* Dropdown arrow indicator */
.nav-menu .menu-item-has-children > a::after {
    content: '▼';
    font-size: 0.6rem;
    margin-left: 0.3rem;
    display: inline-block;
    vertical-align: middle;
    transition: transform var(--animation-speed);
}

.nav-menu .menu-item-has-children:hover > a::after {
    transform: rotate(180deg);
}

/* ===============================================
   Header Actions - Reserved for future use
   =============================================== */
.header-actions {
    display: none;
    /* Space reserved for future action buttons if needed */
}

/* ===============================================
   Mobile Menu Toggle
   =============================================== */
.mobile-toggle {
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    position: relative;
    z-index: 102;
}

.burger-icon {
    width: 24px;
    height: 20px;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.burger-icon span {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--dark);
    border-radius: 2px;
    transition: all var(--animation-speed);
}

/* Burger animation */
.mobile-toggle[aria-expanded="true"] .burger-icon span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

.mobile-toggle[aria-expanded="true"] .burger-icon span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ===============================================
   Mobile Menu
   =============================================== */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    visibility: hidden;
    z-index: 99;
}

/* Overlay */
.mobile-menu-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--overlay-bg);
    opacity: 0;
    transition: opacity var(--animation-speed);
}

/* Panel */
.mobile-menu-panel {
    position: absolute;
    top: 0;
    right: 0;
    width: var(--menu-width);
    max-width: 85vw;
    height: 100%;
    background: var(--white);
    transform: translateX(100%);
    transition: transform var(--animation-speed);
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
    overflow-y: auto;
}

/* Active state */
.mobile-menu[data-state="open"] {
    visibility: visible;
}

.mobile-menu[data-state="open"] .mobile-menu-overlay {
    opacity: 1;
}

.mobile-menu[data-state="open"] .mobile-menu-panel {
    transform: translateX(0);
}

/* Menu content */
.mobile-menu-content {
    padding: 5rem 1.5rem 2rem;
}

.mobile-nav {
    margin-bottom: 2rem;
}

.mobile-nav-menu {
    list-style: none;
}

.mobile-nav-menu > li {
    border-bottom: 1px solid var(--gray-light);
}

.mobile-nav-menu a {
    display: block;
    padding: 1rem 0;
    color: var(--dark);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: color var(--animation-speed);
}

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

/* Submenu */
.has-children {
    position: relative;
}

.has-children > a::after {
    content: '▼';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.75rem;
    color: var(--gray);
    transition: transform var(--animation-speed);
}

.has-children.expanded > a::after {
    transform: translateY(-50%) rotate(180deg);
}

.sub-menu {
    list-style: none;
    padding-left: 1rem;
    margin: 0.5rem 0;
    background: var(--gray-light);
    border-radius: 4px;
    display: none;
}

.sub-menu.active {
    display: block;
}

.sub-menu a {
    font-size: 0.9rem;
    padding: 0.75rem;
    border-bottom: none;
}

/* Mobile Actions - Reserved for future use */
.mobile-actions {
    display: none;
    /* Space reserved for future action buttons if needed */
}

/* ===============================================
   Body State
   =============================================== */
body.menu-open {
    overflow: hidden;
}

/* ===============================================
   Media Queries
   =============================================== */
@media (min-width: 768px) {
    .header-content {
        height: var(--header-height);
    }

    .header-container {
        padding: 0 1.5rem;
    }

    .mobile-toggle {
        display: none;
    }

    .mobile-menu {
        display: none !important;
    }

    .primary-navigation {
        display: flex;
        flex: 1;
        justify-content: center;
        margin: 0 2rem;
    }

    /* Header actions remain hidden on desktop as well */
}

@media (min-width: 1024px) {
    .header-container {
        padding: 0 2rem;
    }

    .nav-menu {
        gap: 2.5rem;
    }
}

/* ===============================================
   Accessibility
   =============================================== */
.mobile-toggle:focus-visible,
.btn:focus-visible,
.nav-menu a:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}