/* ==========================================================================
    SIDE NAVIGATION / HAMBURGER MENU - ENTERPRISE DESIGN SYSTEM
   ========================================================================== */

/* --------------------------------------------------------------------------
    1. MODULE DESIGN TOKENS
   -------------------------------------------------------------------------- */
:root {
    /* Colors & Themes */
    --nav-brand-primary: var(--brand-primary, #8252c9);
    --nav-bg-light: #ffffff;
    --nav-bg-dark: rgba(22, 27, 34, 0.96);
    --nav-border-light: var(--border-color, rgba(0, 0, 0, 0.08));
    --nav-border-dark: rgba(240, 246, 252, 0.1);
    --nav-shadow-light: 10px 0 30px rgba(0, 0, 0, 0.12);
    --nav-shadow-dark: 10px 0 30px rgba(0, 0, 0, 0.5);

    /* Layout & Geometry */
    --nav-width: 320px;
    --nav-width-mobile: 280px;
    --nav-width-desktop: 360px;
    --nav-font-family: var(--font-main, 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif);

    /* Transitions & Animations */
    --nav-transition-timing: cubic-bezier(0.16, 1, 0.3, 1);
    --nav-transition-default: 0.4s var(--nav-transition-timing);
}

/* --------------------------------------------------------------------------
    2. TOGGLE BUTTON (LOGO / HAMBURGER TRANSITION)
   -------------------------------------------------------------------------- */
.logo-toggle-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: auto;
    height: 40px;
    padding-inline: 8px;
    background: transparent;
    border: none;
    outline: none;
    cursor: pointer;
}

/* Logo Image Container */
.logo-toggle-btn .logo-img {
    width: auto;
    height: 38px;
    object-fit: contain;
    opacity: 1;
    transform: rotate(0deg) scale(1);
    backface-visibility: hidden;
    transition:
        transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
        opacity 0.35s ease;
}

/* Hamburger Bars Overlay Container */
.logo-toggle-btn .hamburger-bars {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    width: 28px;
    height: 28px;
    opacity: 0;
    pointer-events: none;
    transform: rotate(-90deg) scale(0.7);
    transition:
        transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
        opacity 0.35s ease;
}

/* Individual Bars */
.logo-toggle-btn .hamburguer-bar {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--nav-brand-primary);
    border-radius: 2px;
    transition:
        transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
        opacity 0.35s ease;
}

/* Toggle Hover & Active States */
.logo-toggle-btn:hover .logo-img,
.logo-toggle-btn.active .logo-img {
    opacity: 0;
    transform: rotate(90deg) scale(0.7);
}

.logo-toggle-btn:hover .hamburger-bars,
.logo-toggle-btn.active .hamburger-bars {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.logo-toggle-btn:hover .hamburguer-bar:nth-child(1) {
    transform: translateY(-2px);
}

.logo-toggle-btn:hover .hamburguer-bar:nth-child(3) {
    transform: translateY(2px);
}

/* --------------------------------------------------------------------------
    3. DRAWER OVERLAY & PANEL LAYOUT
   -------------------------------------------------------------------------- */
/* Backdrop Overlay */
.menu-overlay {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition:
        opacity 0.4s ease,
        visibility 0.4s ease;
}

.menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Sliding Drawer Panel */
.menu-lateral {
    position: fixed;
    inset-block-start: 0;
    inset-inline-start: 0;
    display: flex;
    flex-direction: column;
    width: var(--nav-width);
    max-width: 85vw;
    height: 100vh;
    height: 100dvh;
    padding: 2.5rem 1.5rem 2rem 1.5rem;
    box-sizing: border-box;
    overflow-y: auto;
    z-index: 9999;

    font-family: var(--nav-font-family);
    background-color: var(--nav-bg-light);
    border-right: 1px solid var(--nav-border-light);
    box-shadow: var(--nav-shadow-light);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);

    /* GPU-Accelerated Off-screen Slide Animation */
    transform: translateX(-100%);
    visibility: hidden;
    will-change: transform;
    transition:
        transform var(--nav-transition-default),
        visibility 0.4s step-end,
        background-color var(--transition-theme, 0.3s ease),
        border-color var(--transition-theme, 0.3s ease);
}

.menu-lateral.open {
    transform: translateX(0);
    visibility: visible;
    transition:
        transform var(--nav-transition-default),
        visibility 0s linear;
}

/* --------------------------------------------------------------------------
    4. DRAWER HEADER & BRANDING
   -------------------------------------------------------------------------- */
.hamburger-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.5rem 1rem 0.5rem;
}

.hamburger-logo {
    display: block;
    width: auto;
    height: 38px;
    object-fit: contain;
}

.hamburger-title {
    font-family: inherit;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary, #000000);
    transition: color var(--transition-theme, 0.3s ease);
}

.hamburger-divider {
    width: 100%;
    height: 1px;
    margin-block-end: 1.25rem;
    background-color: var(--nav-border-light);
}

/* --------------------------------------------------------------------------
    5. NAVIGATION LIST & LINKS
   -------------------------------------------------------------------------- */
.hamburger-bar-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.hamburger-bar-list li {
    width: 100%;
}

.hamburger-bar-list a {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.85rem 1.15rem;
    border: 1px solid transparent;
    border-radius: 10px;

    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--text-primary, #1a1a2e);
    text-decoration: none;
    transition: all 0.25s ease;
}

.hamburger-bar-list a:hover {
    color: var(--nav-brand-primary);
    background-color: rgba(165, 122, 227, 0.12);
    border-color: rgba(165, 122, 227, 0.3);
    transform: translateX(6px);
}

.hamburger-bar-list a:active {
    transform: translateX(3px) scale(0.98);
}

.hamburger-bar-list a:focus-visible {
    outline: 2px solid var(--nav-brand-primary);
    outline-offset: 2px;
}

/* --------------------------------------------------------------------------
    6. THEME ADAPTATIONS (DARK / LIGHT)
   -------------------------------------------------------------------------- */
[data-theme="dark"] .menu-lateral {
    background-color: var(--nav-bg-dark);
    border-right-color: var(--nav-border-dark);
    box-shadow: var(--nav-shadow-dark);
}

[data-theme="dark"] .hamburger-title {
    color: #ffffff;
}

[data-theme="light"] .hamburger-title {
    color: #000000;
}

[data-theme="dark"] .hamburger-divider {
    background-color: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .hamburger-bar-list a {
    color: rgba(255, 255, 255, 0.88);
}

[data-theme="dark"] .hamburger-bar-list a:hover {
    color: #ffffff;
    background-color: rgba(165, 122, 227, 0.22);
    border-color: rgba(165, 122, 227, 0.4);
}

/* --------------------------------------------------------------------------
    7. RESPONSIVE BREAKPOINTS (MOBILE-FIRST)
   -------------------------------------------------------------------------- */
@media (max-width: 480px) {
    .menu-lateral {
        width: var(--nav-width-mobile);
        padding: 2rem 1.25rem;
    }

    .hamburger-bar-list a {
        font-size: 1rem;
        padding: 0.75rem 1rem;
    }
}

@media (min-width: 1024px) {
    .menu-lateral {
        width: var(--nav-width-desktop);
        padding: 2.5rem 2rem;
    }
}

/* --------------------------------------------------------------------------
    8. ACCESSIBILITY (a11y)
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {

    .menu-lateral,
    .logo-toggle-btn .logo-img,
    .logo-toggle-btn .hamburger-bars,
    .hamburger-bar-list a {
        transition: none;
    }

    .hamburger-bar-list a:hover {
        transform: none;
    }
}