/**
 * Header Styles
 * @package MrKAli
 */

/* ========================================
   CSS Custom Properties
   ======================================== */
:root {
    /* Colors */
    --header-bg: rgba(255, 255, 255, 0.98);
    --header-border: rgba(0, 0, 0, 0.06);
    --text-primary: #0b0b0b;
    --text-muted: #6b6b6b;
    
    /* Gold palette */
    --gold-light: #f6d365;
    --gold-mid: #f2b94d;
    --gold-warm: #c99a2d;
    --gold-dark: #8b681a;
    --gold-gradient: linear-gradient(90deg, var(--gold-light), var(--gold-mid), var(--gold-warm));
    
    /* Layout */
    --container-max: 1200px;
    --header-height: 88px;
    --header-height-scrolled: 72px;
    
    /* Transitions */
    --ease-smooth: cubic-bezier(0.2, 0.9, 0.25, 1);
    --ease-nav: cubic-bezier(0.16, 0.84, 0.24, 1);
    --duration-fast: 180ms;
    --duration-normal: 280ms;
    --duration-nav: 420ms;
    
    /* Mobile panel */
    --panel-width: min(360px, 92vw);
    --panel-bg: rgba(255, 255, 255, 0.98);
    --overlay-bg: rgba(6, 12, 24, 0.42);
    
    /* Hamburger */
    --ham-width: 28px;
    --ham-height: 2px;
    --ham-gap: 7px;
}

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

.skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    z-index: 99999;
    padding: 0.75rem 1rem;
    background: #fff;
    border: 2px solid var(--gold-mid);
    border-radius: 4px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
}

.skip-link:focus {
    left: 1rem;
    top: 1rem;
}

:focus-visible {
    outline: 3px solid rgba(201, 154, 45, 0.5);
    outline-offset: 3px;
    border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========================================
   Container & Layout
   ======================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: clamp(1rem, 4vw, 2rem);
}

/* ========================================
   Header Base
   ======================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--header-bg);
    border-bottom: 1px solid var(--header-border);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: 
        box-shadow var(--duration-normal) var(--ease-smooth),
        transform var(--duration-normal) var(--ease-smooth);
}

.site-header.is-scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.header-inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 1.5rem;
    min-height: var(--header-height);
}

/* ========================================
   Branding
   ======================================== */
.site-branding {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    z-index: 1100;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: inherit;
}

.logo-svg {
    display: block;
    height: 36px;
    width: auto;
}

.logo-text {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--text-primary);
    letter-spacing: 0.2px;
}

.logo-text small {
    display: block;
    font-weight: 500;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ========================================
   Primary Navigation
   ======================================== */
.primary-navigation {
    justify-self: center;
}

.primary-menu {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.primary-menu a {
    display: block;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: 
        color var(--duration-fast) var(--ease-nav),
        background var(--duration-fast) var(--ease-nav),
        transform var(--duration-fast) var(--ease-nav);
}

.primary-menu a:hover,
.primary-menu a:focus {
    color: var(--gold-dark);
    background: rgba(246, 211, 101, 0.1);
    transform: translateY(-2px);
}

.primary-menu a[aria-current="page"],
.primary-menu .current-menu-item > a {
    color: var(--gold-dark);
    background: rgba(246, 211, 101, 0.12);
}

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

.sub-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    min-width: 200px;
    padding: 0.5rem;
    background: #fff;
    border: 1px solid var(--header-border);
    border-radius: 12px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transition: 
        opacity var(--duration-normal) var(--ease-nav),
        transform var(--duration-normal) var(--ease-nav),
        visibility var(--duration-normal);
}

.menu-item-has-children:hover > .sub-menu,
.menu-item-has-children:focus-within > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.sub-menu a {
    display: block;
    padding: 0.625rem 0.875rem;
    border-radius: 6px;
}

/* ========================================
   Header Utilities
   ======================================== */
.header-utilities {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    justify-self: end;
}

/* Desktop only utilities */
.desktop-only {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Social Links */
.header-social {
    gap: 0.375rem;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    color: var(--text-primary);
    transition: 
        color var(--duration-fast) var(--ease-nav),
        background var(--duration-fast) var(--ease-nav),
        transform var(--duration-fast) var(--ease-nav);
}

.social-link svg {
    width: 18px;
    height: 18px;
}

.social-link:hover,
.social-link:focus {
    color: var(--gold-dark);
    background: rgba(246, 211, 101, 0.1);
    transform: translateY(-2px);
}

/* Language Switcher */
.lang-switcher {
    gap: 0.25rem;
}

.lang-switcher a {
    padding: 0.375rem 0.5rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: 
        color var(--duration-fast),
        background var(--duration-fast);
}

.lang-switcher a:hover,
.lang-switcher a:focus {
    color: var(--gold-dark);
    background: rgba(0, 0, 0, 0.03);
}

/* ========================================
   Buttons
   ======================================== */
.header-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.875rem;
    text-decoration: none;
    overflow: hidden;
    transition: 
        transform var(--duration-fast) var(--ease-nav),
        box-shadow var(--duration-fast) var(--ease-nav);
}

.header-btn::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        120deg,
        transparent 30%,
        rgba(255, 255, 255, 0.4) 50%,
        transparent 70%
    );
    transform: translateX(-100%);
    transition: transform 0.6s var(--ease-smooth);
}

.header-btn:hover::after,
.header-btn:focus::after {
    transform: translateX(100%);
}

/* CTA Button */
.header-cta {
    background: linear-gradient(90deg, var(--gold-mid), var(--gold-light));
    color: var(--text-primary);
    box-shadow: 0 4px 16px rgba(201, 154, 45, 0.2);
}

.header-cta:hover,
.header-cta:focus {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(201, 154, 45, 0.3);
}

/* CV Button */
.header-cv {
    background: rgba(255, 255, 255, 0.9);
    color: var(--gold-dark);
    border: 1px solid rgba(201, 154, 45, 0.25);
}

.header-cv:hover,
.header-cv:focus {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

/* ========================================
   Hamburger Menu Toggle
   ======================================== */
.nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    padding: 0;
    border: 0;
    border-radius: 10px;
    background: transparent;
    cursor: pointer;
    transition: background var(--duration-fast);
}

.nav-toggle:hover {
    background: rgba(0, 0, 0, 0.03);
}

.hamburger {
    position: relative;
    display: block;
    width: var(--ham-width);
    height: var(--ham-height);
    background: var(--text-primary);
    border-radius: 2px;
    transition: 
        background var(--duration-nav) var(--ease-nav),
        transform var(--duration-nav) var(--ease-nav);
}

.hamburger::before,
.hamburger::after {
    content: "";
    position: absolute;
    left: 0;
    width: 100%;
    height: var(--ham-height);
    background: var(--text-primary);
    border-radius: 2px;
    transition: 
        top var(--duration-nav) var(--ease-nav),
        transform var(--duration-nav) var(--ease-nav),
        background var(--duration-nav) var(--ease-nav);
}

.hamburger::before {
    top: calc(-1 * var(--ham-gap));
}

.hamburger::after {
    top: var(--ham-gap);
}

/* Open state */
.nav-toggle[aria-expanded="true"] .hamburger {
    background: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
    top: 0;
    transform: rotate(45deg);
    background: var(--gold-mid);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
    background: var(--gold-mid);
}

/* ========================================
   Mobile Navigation Panel
   ======================================== */
.mobile-navigation {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--panel-width);
    height: 100dvh;
    background: var(--panel-bg);
    border-left: 1px solid var(--header-border);
    border-radius: 16px 0 0 16px;
    box-shadow: -16px 0 48px rgba(0, 0, 0, 0.12);
    transform: translateX(100%);
    visibility: hidden;
    z-index: 2000;
    overflow-y: auto;
    overscroll-behavior: contain;
    transition: 
        transform var(--duration-nav) var(--ease-nav),
        visibility var(--duration-nav);
}

.mobile-navigation.is-open {
    transform: translateX(0);
    visibility: visible;
}

.mobile-nav-inner {
    display: flex;
    flex-direction: column;
    min-height: 100%;
    padding: calc(env(safe-area-inset-top, 16px) + 4rem) 1.5rem calc(env(safe-area-inset-bottom, 16px) + 2rem);
}

/* Mobile Close Button */
.mobile-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 0;
    border-radius: 8px;
    background: transparent;
    cursor: pointer;
    transition: background var(--duration-fast);
}

.mobile-close:hover,
.mobile-close:focus {
    background: rgba(0, 0, 0, 0.03);
}

.mobile-close::before,
.mobile-close::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 2px;
    background: var(--text-muted);
    border-radius: 1px;
}

.mobile-close::before {
    transform: translate(-50%, -50%) rotate(45deg);
}

.mobile-close::after {
    transform: translate(-50%, -50%) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
    justify-content: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-menu a {
    display: block;
    padding: 0.875rem 1rem;
    border-radius: 10px;
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary);
    text-decoration: none;
    text-align: center;
    transition: 
        color var(--duration-fast),
        background var(--duration-fast),
        transform var(--duration-fast);
}

.mobile-menu a:hover,
.mobile-menu a:focus {
    color: var(--gold-dark);
    background: rgba(246, 211, 101, 0.08);
    transform: translateY(-2px);
}

/* Mobile submenu toggle */
.mobile-sub-toggle {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 0;
    border-radius: 10px;
    background: transparent;
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: background var(--duration-fast);
}

.mobile-sub-toggle:hover,
.mobile-sub-toggle:focus {
    background: rgba(0, 0, 0, 0.03);
}

.mobile-sub {
    display: none;
    list-style: none;
    margin: 0.5rem 0 0;
    padding: 0 1rem;
}

.mobile-sub-toggle[aria-expanded="true"] + .mobile-sub {
    display: block;
}

/* Mobile Quick Actions */
.mobile-quick-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: auto;
    padding-top: 1.5rem;
}

.mobile-cta {
    display: block;
    padding: 0.875rem 1rem;
    border-radius: 10px;
    background: linear-gradient(90deg, var(--gold-mid), var(--gold-light));
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-primary);
    text-align: center;
    text-decoration: none;
    box-shadow: 0 4px 16px rgba(201, 154, 45, 0.15);
    transition: 
        transform var(--duration-fast),
        box-shadow var(--duration-fast);
}

.mobile-cta:hover,
.mobile-cta:focus {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(201, 154, 45, 0.25);
}

/* Mobile Social */
.mobile-social {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    padding-top: 1rem;
}

.social-link-mobile {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: rgba(246, 211, 101, 0.1);
    color: var(--gold-dark);
    transition: 
        background var(--duration-fast),
        transform var(--duration-fast);
}

.social-link-mobile svg {
    width: 20px;
    height: 20px;
}

.social-link-mobile:hover,
.social-link-mobile:focus {
    background: rgba(246, 211, 101, 0.2);
    transform: scale(1.05);
}

/* Mobile Language Switcher */
.mobile-lang {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    padding-top: 0.75rem;
    color: var(--text-muted);
}

.mobile-lang a {
    padding: 0.375rem 0.5rem;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--duration-fast);
}

.mobile-lang a:hover,
.mobile-lang a:focus {
    color: var(--gold-dark);
}

/* ========================================
   Overlay
   ======================================== */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: var(--overlay-bg);
    opacity: 0;
    visibility: hidden;
    z-index: 1500;
    transition: 
        opacity var(--duration-nav) var(--ease-nav),
        visibility var(--duration-nav);
}

.nav-overlay.is-visible {
    opacity: 1;
    visibility: visible;
}

/* Body scroll lock */
body.nav-open {
    overflow: hidden;
}

/* ========================================
   Responsive Styles
   ======================================== */
@media (max-width: 1024px) {
    .primary-navigation {
        display: none;
    }
    
    .desktop-only {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .header-inner {
        grid-template-columns: auto 1fr;
    }
    
    .header-utilities {
        justify-content: flex-end;
    }
}

@media (max-width: 480px) {
    :root {
        --header-height: 72px;
    }
    
    .logo-text {
        font-size: 0.95rem;
    }
    
    .logo-text small {
        display: none;
    }
    
    .mobile-nav-inner {
        padding-inline: 1rem;
    }
}