/**
 * Hyperdope YouTube-Style Sidebar
 * Reusable sidebar component for homepage, player, and search pages
 * Version: 1.0.0 (November 2025)
 */

/* ============================================ */
/* BASE SIDEBAR STYLES                          */
/* ============================================ */

/* Base sidebar - white background, right border for separation */
.left-sidebar {
    width: 200px;
    background: #fff;
    position: fixed;
    top: 0; /* Extend to top, under navbar */
    left: 0;
    bottom: 0;
    padding-top: 60px; /* Push content below navbar */
    overflow-y: auto;
    overflow-x: hidden;
    border-right: 1px solid #ddd;
    z-index: 1000;
    transform: translateX(0); /* Visible by default on desktop */
    transition: transform 0.3s ease, width 0.3s ease;
}

/* Hide Browse header */
.left-sidebar h3 {
    display: none;
}

/* ============================================ */
/* DESKTOP COLLAPSED MODE (Homepage Only)      */
/* ============================================ */

/* Desktop: Collapsed icon mode (72px) with small labels */
.left-sidebar.sidebar-collapsed {
    width: 72px;
}

.left-sidebar.sidebar-collapsed .category-item span.category-text {
    display: block;
    font-size: 10px;
    text-align: center;
    line-height: 1.2;
    max-width: 64px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.left-sidebar.sidebar-collapsed .category-item {
    justify-content: center;
    padding: 8px 4px;
    margin: 2px 4px;
    flex-direction: column;
    gap: 4px;
}

.left-sidebar.sidebar-collapsed .category-item .category-icon {
    margin: 0 auto;
}

/* ============================================ */
/* OVERLAY MODE (Medium/Mobile + Player/Search) */
/* ============================================ */

/* Overlay mode - narrower to not cover search box */
.left-sidebar.sidebar-overlay-mode {
    width: 180px;
    top: 0; /* Covers main navbar - horizontal line aligns via navbar height */
    transform: translateX(-100%); /* Hidden by default */
    z-index: 12000; /* Above top navbar for overlay effect */
    padding-top: 0; /* No padding - overlay has its own navbar */
}

/* Wider overlay on desktop for player/search pages */
@media (min-width: 1025px) {
    .left-sidebar.sidebar-overlay-mode {
        width: 250px;
    }
}

.left-sidebar.sidebar-overlay-mode.sidebar-overlay-visible {
    transform: translateX(0); /* Slide in */
}

/* ============================================ */
/* CATEGORY ITEMS                               */
/* ============================================ */

/* Category items - light styling for white background */
.category-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    margin: 0 8px;
    color: #333;
    cursor: pointer;
    transition: all 0.2s ease;
    gap: 12px;
    border-radius: 8px;
}

.category-item:hover {
    background: #f5f5f5; /* Subtle gray pill */
}

.category-item img {
    flex-shrink: 0;
}

.category-item span {
    font-size: 13px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Category dividers */
.category-divider {
    height: 1px;
    background: #eee;
    margin: 8px 12px;
}

/* Active state */
.category-item.active {
    background: #f0f0f0;
    color: #333;
}

/* Vaporwave letter-spacing for MEMES / VIBES categories */
.category-text.vaporwave {
    letter-spacing: 0.35em;
    text-transform: uppercase;
}

/* ============================================ */
/* HAMBURGER MENU BUTTON                        */
/* ============================================ */

.hamburger-btn {
    display: flex; /* Visible on ALL platforms */
    flex-direction: column;
    justify-content: space-around;
    width: 20px; /* Consistent size across platforms */
    height: 16px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    margin-left: 10px; /* Desktop left edge spacing */
    margin-right: 10px; /* Desktop spacing */
    z-index: 1001;
}

.hamburger-btn span {
    width: 100%;
    height: 3px;
    background: #333;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger-btn:hover span {
    background: #667eea;
}

/* ============================================ */
/* SIDEBAR OVERLAY NAVBAR (Medium/Mobile)       */
/* ============================================ */

.sidebar-overlay-navbar {
    display: none; /* Hidden by default, shown in overlay mode */
    align-items: center;
    height: 59px; /* 59px + 1px border = 60px total to align with main navbar */
    padding: 0 16px;
    margin-bottom: 12px; /* Space between navbar and first category item */
    border-bottom: 1px solid #ddd;
    gap: 10px;
    background: #fff;
}

.sidebar-overlay-mode .sidebar-overlay-navbar {
    display: flex;
}

.logo-overlay {
    width: 115px;
    height: auto;
    cursor: pointer;
}

.hamburger-btn-overlay {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 20px;
    height: 16px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.hamburger-btn-overlay span {
    width: 100%;
    height: 3px;
    background: #333;
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ============================================ */
/* OVERLAY DIMMING BACKGROUND                   */
/* ============================================ */

.sidebar-overlay-dim {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 11999; /* Just below sidebar */
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sidebar-overlay-dim.active {
    display: block;
    opacity: 1;
}

/* ============================================ */
/* RESPONSIVE BREAKPOINTS - YouTube Style       */
/* ============================================ */

/* Wide Desktop (>1024px) - Sidebar visible by default on homepage */
@media (min-width: 1025px) {
    .left-sidebar:not(.sidebar-overlay-mode) {
        transform: translateX(0); /* Always visible on homepage */
    }
}

/* Medium (600px - 1024px) - Icon mode visible by default on homepage */
@media (min-width: 600px) and (max-width: 1024px) {
    .left-sidebar:not(.sidebar-overlay-mode) {
        width: 72px; /* Icon mode by default */
        top: 0; /* Extend to top, under navbar */
        transform: translateX(0); /* Visible */
    }

    /* Show small text labels below icons */
    .left-sidebar:not(.sidebar-overlay-mode) .category-item span.category-text {
        display: block;
        font-size: 10px;
        text-align: center;
        line-height: 1.2;
        max-width: 64px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .left-sidebar:not(.sidebar-overlay-mode) .category-item {
        justify-content: center;
        padding: 8px 4px;
        margin: 2px 4px;
        flex-direction: column;
        gap: 4px;
    }

    /* When overlay opens, narrower to not cover search box */
    .left-sidebar.sidebar-overlay-visible {
        width: 180px;
        top: 0;
        z-index: 12000; /* Above top navbar for YouTube-style overlay */
        padding-top: 0; /* No padding - overlay has its own navbar */
    }

    /* Show category text when overlay opens */
    .left-sidebar.sidebar-overlay-visible .category-item span.category-text {
        display: block;
    }

    /* Restore normal layout (left-justified) when overlay opens */
    .left-sidebar.sidebar-overlay-visible .category-item {
        justify-content: flex-start;
        padding: 12px 16px;
        margin: 0 8px;
        gap: 12px;
        flex-direction: row;
    }

    /* Show overlay navbar when overlay is visible */
    .left-sidebar.sidebar-overlay-visible .sidebar-overlay-navbar {
        display: flex;
    }
}

/* Mobile (<600px) - Narrower to not cover search box */
@media (max-width: 599px) {
    .left-sidebar {
        width: 180px;
        top: 0;
        transform: translateX(-100%);
        z-index: 12000; /* Above top navbar for YouTube-style overlay */
        padding-top: 0; /* No padding - overlay has its own navbar */
    }

    /* Mobile-specific hamburger sizing */
    .hamburger-btn {
        width: 20px !important;
        height: 16px !important;
        margin-left: 3px !important;
        margin-right: 3px !important;
    }

    /* Hide "Browse" header on mobile */
    .left-sidebar h3 {
        display: none;
    }
}

/* ============================================ */
/* MORE CATEGORIES expander                     */
/* (video-launch-polish-v1 Task 2)              */
/* ============================================ */

.sidebar-more-toggle {
    user-select: none;
}
.sidebar-more-toggle .category-icon {
    transition: transform 0.15s ease;
}
.sidebar-more-toggle.expanded .category-icon {
    transform: rotate(180deg);
}
.sidebar-more-list {
    margin-top: 4px;
}
.sidebar-more-list .category-item .category-icon {
    font-size: 18px;
    width: 18px;
    text-align: center;
}