/* --------------------------------------------------------------------------
   MAURYARTE ARCHITECTURE — Navigation (Drawer Menu & Hamburger System)
   -------------------------------------------------------------------------- */

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 2.5rem 3rem;
    background: linear-gradient(to bottom, rgba(11,11,11,0.92) 0%, rgba(11,11,11,0) 100%);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-sizing: border-box;
}

@media screen and (min-width: 769px) {
    .main-header {
        z-index: 2000 !important;
    }
}

.header-container {
    max-width: 1300px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.4s ease;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    transition: all 0.4s ease;
}

.brand-logo-img {
    height: 20px;
    width: auto;
    display: block;
    filter: brightness(0) invert(1);
    transition: var(--transition-smooth);
}

.brand-logo-img.logo-collapsed {
    height: 15px;
}

.hamburger-btn {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 14px;
    z-index: 100001;
    transition: var(--transition-smooth);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.hamburger-line {
    width: 100%;
    height: 1.5px;
    background-color: var(--text-primary);
    transition: var(--transition-smooth);
}

.hamburger-btn:hover .hamburger-line {
    background-color: var(--tech-accent);
}

.hamburger-btn.open .hamburger-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.hamburger-btn.open .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger-btn.open .hamburger-line:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   ORIGINAL LUXURY VOLUME SLIDER (1px Ultra-Sleek Track with Cyan Knob)
   -------------------------------------------------------------------------- */
.volume-slider-container {
    display: inline-flex;
    align-items: center;
    width: 80px;
    height: 24px;
    vertical-align: middle;
}

.volume-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 1px;
    background: rgba(255, 255, 255, 0.18);
    outline: none;
    border: none;
    cursor: pointer;
    margin: 0;
    padding: 0;
}

/* Webkit browser tracks (Chrome, Safari, Edge) */
.volume-slider::-webkit-slider-runnable-track {
    width: 100%;
    height: 1px;
    background: rgba(255, 255, 255, 0.18);
    border: none;
}

/* Webkit slider thumb knob */
.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--tech-accent, #00f0ff);
    cursor: pointer;
    margin-top: -2.5px;
    box-shadow: 0 0 4px var(--tech-accent, #00f0ff);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.volume-slider-container:hover .volume-slider::-webkit-slider-thumb {
    transform: scale(1.3);
    box-shadow: 0 0 8px var(--tech-accent, #00f0ff);
}

/* Firefox tracks */
.volume-slider::-moz-range-track {
    width: 100%;
    height: 1px;
    background: rgba(255, 255, 255, 0.18);
    border: none;
}

/* Firefox slider thumb knob */
.volume-slider::-moz-range-thumb {
    width: 6px;
    height: 6px;
    border: none;
    border-radius: 50%;
    background: var(--tech-accent, #00f0ff);
    cursor: pointer;
    box-shadow: 0 0 4px var(--tech-accent, #00f0ff);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.volume-slider-container:hover .volume-slider::-moz-range-thumb {
    transform: scale(1.3);
    box-shadow: 0 0 8px var(--tech-accent, #00f0ff);
}

.left-trigger-system {
    position: fixed;
    top: 0;
    left: 0;
    width: 25px;
    height: 100%;
    z-index: 99999;
    cursor: pointer;
}

.left-menu-drawer {
    position: fixed;
    top: 0;
    left: -320px;
    width: 320px;
    height: 100%;
    background-color: #0d0d0d;
    border-right: 1px solid var(--border-color);
    z-index: 100000;
    transition: left 0.6s cubic-bezier(0.65, 0.05, 0.36, 1), visibility 0.6s cubic-bezier(0.65, 0.05, 0.36, 1);
    display: flex;
    flex-direction: column;
    padding: 5rem 2rem;
    visibility: hidden;
}

.left-menu-drawer.open {
    left: 0;
    visibility: visible;
}

.drawer-close-btn {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.8rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

.drawer-close-btn:hover {
    color: var(--text-primary);
}

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

.drawer-logo-img {
    height: 24px;
    width: auto;
    filter: brightness(0) invert(1);
    margin-bottom: 0.8rem;
}

.drawer-brand-tagline {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-accent);
    letter-spacing: 0.05em;
    line-height: 1.4;
}

.drawer-nav {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin: 3rem 0;
}

.drawer-nav-item {
    font-family: var(--font-primary);
    font-size: 1.2rem;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: color 0.3s ease, transform 0.3s ease;
}

.drawer-nav-item:hover {
    color: var(--tech-accent);
    transform: translateX(5px);
}

.drawer-cta {
    color: var(--tech-accent);
    font-weight: 500;
}

.drawer-footer {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.drawer-lang-selector {
    margin-bottom: 1rem;
}

.drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    z-index: 99999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.drawer-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* --------------------------------------------------------------------------
   FLOATING BACK BUTTON (Luxury Minimalist Navigation Arrow)
   -------------------------------------------------------------------------- */
.floating-back-btn {
    position: fixed !important;
    top: 50% !important;
    left: 5rem !important;
    transform: translateY(-50%) !important;
    z-index: 99999 !important;
    width: 32px !important;
    height: 32px !important;
    background: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    color: #ffffff !important;
    text-decoration: none !important;
    cursor: pointer !important;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease !important;
    box-sizing: border-box !important;
}

.floating-back-btn svg {
    width: 32px !important;
    height: 32px !important;
    fill: none !important;
    stroke: #ffffff !important;
    stroke-width: 1.6 !important;
    stroke-linecap: round !important;
    stroke-linejoin: round !important;
    display: block !important;
    margin: 0 !important;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.5));
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), stroke 0.4s ease, filter 0.4s ease !important;
}

.floating-back-btn:hover svg {
    transform: translateX(-6px) scale(1.22) !important;
    stroke: var(--accent, #D1B28A) !important;
    filter: drop-shadow(0 0 14px rgba(209, 178, 138, 0.85)) !important;
}

/* SORA mode warm gold hover override */
body.mode-sora .floating-back-btn:hover svg {
    stroke: #C5A880 !important;
    filter: drop-shadow(0 0 14px rgba(197, 168, 128, 0.85)) !important;
}

/* --------------------------------------------------------------------------
   MOBILE ONLY COMPACT MINIMIZED HEADER ON SCROLL (< 768px)
   -------------------------------------------------------------------------- */
@media screen and (max-width: 768px) {
    .main-header {
        padding: 1.2rem 1.2rem !important;
    }

    .main-header.mobile-minimized {
        padding: 0.6rem 1.2rem !important;
        background: rgba(11, 11, 11, 0.95) !important;
        backdrop-filter: blur(12px) !important;
        -webkit-backdrop-filter: blur(12px) !important;
        border-bottom: 1px solid rgba(232, 225, 216, 0.08) !important;
    }

    .main-header.mobile-minimized .brand-logo img {
        display: none !important;
    }

    .main-header.mobile-minimized .logo-subtext span {
        display: none !important;
    }

    .main-header.mobile-minimized .header-switcher-center {
        display: none !important;
    }

    .main-header.mobile-minimized .header-sora-portal .sora-portal-btn {
        font-size: 0.6rem !important;
        letter-spacing: 0.35em !important;
        padding: 3px 6px !important;
        border: none !important;
        background: transparent !important;
    }

    .left-menu-drawer {
        width: 85vw;
        left: -85vw;
    }

    .floating-back-btn {
        left: 2rem !important;
        top: 85px !important;
        transform: none !important;
        width: 26px !important;
        height: 26px !important;
    }

    .floating-back-btn svg {
        width: 26px !important;
        height: 26px !important;
    }
}