@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Rajdhani:wght@400;500;600;700&display=swap');

:root {
    --clr-dark-a0: #000000;
    --clr-light-a0: #ffffff;

    --clr-primary-a0:  #bd0000;
    --clr-primary-a10: #c9371d;
    --clr-primary-a20: #d55538;
    --clr-primary-a30: #df6f52;
    --clr-primary-a40: #e8876d;
    --clr-primary-a50: #ef9f88;

    --clr-surface-a0:  #0d0d0d;
    --clr-surface-a10: #161616;
    --clr-surface-a15: #1e1e1e;
    --clr-surface-a20: #262626;
    --clr-surface-a30: #363636;
    --clr-surface-a40: #484848;
    --clr-surface-a50: #5c5c5c;

    --clr-text-bright:  #f0ece8;
    --clr-text-mid:     #9a9490;
    --clr-text-dim:     #555050;

    --panel-width: 340px;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;

    --ease-snappy: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

*, *::before, *::after { box-sizing: border-box; }
body {
    margin: 0; padding: 0;
    background: var(--clr-surface-a0);
    font-family: 'Rajdhani', sans-serif;
    overflow: hidden;
    color: var(--clr-text-bright);
}

.fill-screen {
    position: absolute;
    inset: 0;
    width: 100vw;
    height: 100vh;
}

#main-content {
    display: flex;
    height: 100%;
    gap: 0;
}

#content-left {
    width: var(--panel-width);
    flex-shrink: 0;
    height: 100%;
}

#side-menu {
    position: relative;
    width: 100%;
    height: 100%;
    background: var(--clr-surface-a10);
    display: flex;
    flex-direction: column;
    overflow: hidden;

    border-right: 1px solid rgba(189,0,0,0.25);
}

#side-menu::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
}

#brand-bar {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 20px 16px;
    border-bottom: 1px solid var(--clr-surface-a20);
}

#brand-icon {
    width: 32px;
    height: 32px;
    background: var(--clr-primary-a0);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

#brand-icon svg { width: 18px; height: 18px; }

#brand-name {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 20px;
    letter-spacing: 0.12em;
    color: var(--clr-text-bright);
    line-height: 1;
}

#brand-tag {
    margin-left: auto;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--clr-primary-a0);
    border: 1px solid var(--clr-primary-a0);
    padding: 2px 6px;
    border-radius: 3px;
    opacity: 0.8;
}

#filter-bar {
    position: relative;
    z-index: 1;
    padding: 14px 16px 10px;
    border-bottom: 1px solid var(--clr-surface-a20);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

#search-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 10px;
    width: 15px;
    height: 15px;
    color: var(--clr-text-dim);
    pointer-events: none;
}

#search-input {
    width: 100%;
    background: var(--clr-surface-a20);
    border: 1px solid var(--clr-surface-a30);
    border-radius: var(--radius-sm);
    padding: 8px 10px 8px 34px;
    color: var(--clr-text-bright);
    font-family: 'Rajdhani', sans-serif;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.04em;
    outline: none;
    transition: border-color 0.2s var(--ease-snappy);
}

#search-input::placeholder { color: var(--clr-text-dim); }

#search-input:focus {
    border-color: var(--clr-primary-a0);
    background: var(--clr-surface-a15);
}

#filter-chips {
    display: flex;
    gap: 6px;
}

.chip {
    background: var(--clr-surface-a20);
    border: 1px solid var(--clr-surface-a30);
    border-radius: 4px;
    color: var(--clr-text-mid);
    font-family: 'Rajdhani', sans-serif;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    padding: 4px 10px;
    cursor: pointer;
    transition: all 0.18s var(--ease-snappy);
    text-transform: uppercase;
}

.chip:hover {
    border-color: var(--clr-primary-a0);
    color: var(--clr-text-bright);
}

.chip.active {
    background: var(--clr-primary-a0);
    border-color: var(--clr-primary-a0);
    color: white;
}

#model-selection-area {
    position: relative;
    z-index: 1;
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;

    scrollbar-width: thin;
    scrollbar-color: var(--clr-surface-a30) transparent;
}

#model-selection-area::-webkit-scrollbar { width: 4px; }
#model-selection-area::-webkit-scrollbar-track { background: transparent; }
#model-selection-area::-webkit-scrollbar-thumb {
    background: var(--clr-surface-a30);
    border-radius: 2px;
}

.model-selection-card {
    position: relative;
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--clr-surface-a15);
    border: 1px solid var(--clr-surface-a20);
    border-radius: var(--radius-md);
    padding: 10px;
    cursor: pointer;
    overflow: hidden;
    transition: border-color 0.2s var(--ease-snappy),
                background 0.2s var(--ease-snappy),
                transform 0.18s var(--ease-snappy);

    animation: cardIn 0.4s var(--ease-snappy) both;
}

.model-selection-card:nth-child(1) { animation-delay: 0.05s; }
.model-selection-card:nth-child(2) { animation-delay: 0.10s; }
.model-selection-card:nth-child(3) { animation-delay: 0.15s; }
.model-selection-card:nth-child(4) { animation-delay: 0.20s; }

@keyframes cardIn {
    from { opacity: 0; transform: translateX(-12px); }
    to   { opacity: 1; transform: translateX(0); }
}

.model-selection-card:hover {
    border-color: rgba(189,0,0,0.5);
    background: var(--clr-surface-a20);
    transform: translateX(3px);
}

.model-selection-card.active {
    border-color: var(--clr-primary-a0);
    background: var(--clr-surface-a20);
}

.model-selection-card.active .card-accent {
    opacity: 1;
    transform: scaleY(1);
}

.card-accent {
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--clr-primary-a0);
    border-radius: 0 2px 2px 0;
    opacity: 0;
    transform: scaleY(0.4);
    transform-origin: center;
    transition: opacity 0.2s, transform 0.2s var(--ease-snappy);
}

.model-selection-card:hover .card-accent {
    opacity: 0.4;
    transform: scaleY(1);
}

.card-thumb {
    position: relative;
    width: 64px;
    height: 64px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--clr-surface-a0);
    flex-shrink: 0;
}

.card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s var(--ease-snappy);
}

.model-selection-card:hover .card-thumb img {
    transform: scale(1.08);
}

.card-overlay {
    position: absolute;
    inset: 0;
    background: rgba(189,0,0,0.65);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s;
}

.model-selection-card:hover .card-overlay { opacity: 1; }

.view-label {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 12px;
    letter-spacing: 0.15em;
    color: white;
}

.thumb-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-text-dim);
    font-size: 26px;
}

.card-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.card-title {
    margin: 0;
    font-family: 'Bebas Neue', sans-serif;
    font-size: 18px;
    letter-spacing: 0.08em;
    color: var(--clr-text-bright);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-sub {
    margin: 0;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.06em;
    color: var(--clr-text-mid);
    text-transform: uppercase;
}

.placeholder-card { opacity: 0.45; }
.placeholder-card:hover { opacity: 0.65; }

#menu-footer {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
    border-top: 1px solid var(--clr-surface-a20);
}

#footer-count {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 13px;
    letter-spacing: 0.15em;
    color: var(--clr-text-mid);
}

#asset-count {
    color: var(--clr-primary-a0);
}

#footer-divider {
    flex: 1;
    height: 1px;
    background: var(--clr-surface-a20);
}

#footer-version {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--clr-text-dim);
}

#content-right {
    flex: 1;
    position: relative;
    height: 100%;
    overflow: hidden;
    background: radial-gradient(ellipse at 60% 40%, #1a0e0e 0%, var(--clr-surface-a0) 70%);
}

#viewer-hud {
    position: absolute;
    top: 0; left: 0; right: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 28px;
    background: linear-gradient(to bottom, rgba(0,0,0,0.6), transparent);
    pointer-events: none;
}

#hud-controls { pointer-events: all; }

#active-model-name {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 22px;
    letter-spacing: 0.18em;
    color: var(--clr-text-bright);
    line-height: 1;
}

#active-model-meta {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--clr-text-mid);
    text-transform: uppercase;
    margin-top: 3px;
}

.hud-btn {
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--radius-sm);
    color: var(--clr-text-mid);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.18s var(--ease-snappy);
    backdrop-filter: blur(6px);
}

.hud-btn:hover {
    background: rgba(189,0,0,0.25);
    border-color: var(--clr-primary-a0);
    color: white;
}

.hud-btn svg { width: 16px; height: 16px; }

#content-right::before,
#content-right::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 40px;
    pointer-events: none;
    z-index: 5;
    opacity: 0.3;
}

#content-right::before {
    bottom: 24px;
    left: 24px;
    border-left: 1px solid var(--clr-primary-a0);
    border-bottom: 1px solid var(--clr-primary-a0);
}

#content-right::after {
    bottom: 24px;
    right: 24px;
    border-right: 1px solid var(--clr-primary-a0);
    border-bottom: 1px solid var(--clr-primary-a0);
}

#content-right .grid-bg {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none;
    z-index: 0;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 80%);
}

#empty-state {
    position: absolute;
    inset: 0;
    z-index: 4;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    pointer-events: none;
    transition: opacity 0.4s var(--ease-snappy);
}

#empty-icon {
    font-size: 64px;
    color: var(--clr-surface-a30);
    animation: floatIcon 4s ease-in-out infinite;
}

@keyframes floatIcon {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-8px); }
}

#empty-title {
    margin: 0;
    font-family: 'Bebas Neue', sans-serif;
    font-size: 20px;
    letter-spacing: 0.2em;
    color: var(--clr-surface-a40);
}

#empty-sub {
    margin: 0;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.06em;
    color: var(--clr-surface-a30);
}

#model-preview {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    --poster-color: transparent;
}

#image-preview {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
}

#video-preview {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
}

@media (max-width: 680px) {
    :root { --panel-width: 100%; }
    #main-content { flex-direction: column; }
    #content-left { width: 100%; height: 40vh; }
    #content-right { height: 60vh; }
    #side-menu { border-radius: 0; border-right: none; border-bottom: 1px solid rgba(189,0,0,0.25); }
}


.card-download-btn {
    margin-left: auto;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    background: var(--clr-surface-a20);
    border: 1px solid var(--clr-surface-a30);
    border-radius: var(--radius-sm);
    color: var(--clr-text-mid);
    cursor: pointer;
    opacity: 0;
    transform: translateX(4px);
    transition: opacity 0.2s ease, transform 0.2s ease, background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
    text-decoration: none;
    z-index: 10;
}

.card-download-btn i {
    font-size: 13px;
}

.model-selection-card:hover .card-download-btn {
    opacity: 1;
    transform: translateX(0);
}

.card-download-btn:hover {
    background: var(--clr-primary-a0);
    border-color: var(--clr-primary-a0);
    color: white;
}

.placeholder-card .card-download-btn {
    display: none;
}