:root {
    --bg: #111;
    --sidebar-bg: #1a1a1a;
    --sidebar-border: #2a2a2a;
    --text: #aaa;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { overflow-x: hidden; }

body {
    background: var(--bg);
    display: flex;
    min-height: 100vh;
    transition: background .3s;
}

/* ── Sidebar toggle button ── */
#sidebar-toggle {
    position: fixed;
    top: 14px; left: 14px;
    z-index: 20;
    width: 36px; height: 36px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,.15);
    background: var(--sidebar-bg);
    color: var(--text);
    font-size: 18px;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: background .15s, color .15s;
    box-shadow: 0 2px 8px rgba(0,0,0,.4);
}
#sidebar-toggle:hover { background: rgba(255,255,255,.12); color: white; }
#sidebar-toggle.open  { color: white; background: rgba(255,255,255,.15); }

/* ── Sidebar ── */
aside#sidebar {
    position: fixed;
    left: 0; top: 0; bottom: 0;
    width: 176px;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    overflow-y: auto;
    overflow-x: hidden;
    padding: 64px 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    z-index: 10;
    transform: translateX(-100%);
    transition: transform .25s ease, background .3s, border-color .3s;
}
aside#sidebar.open {
    transform: translateX(0);
}

aside#sidebar::-webkit-scrollbar { width: 4px; }
aside#sidebar::-webkit-scrollbar-thumb { background: #333; border-radius: 2px; }

.sidebar-section { display: flex; flex-direction: column; gap: 8px; }

.sidebar-label {
    font-size: 9px;
    font-weight: 800;
    letter-spacing: 1.5px;
    color: var(--text);
    opacity: .5;
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.btn-group button {
    flex: 1;
    min-width: 36px;
    padding: 5px 4px;
    border: 1px solid var(--sidebar-border);
    background: transparent;
    color: var(--text);
    font-size: 11px;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    transition: background .15s, color .15s, border-color .15s;
    white-space: nowrap;
}
.btn-group button:hover { background: rgba(255,255,255,.07); }
.btn-group button.active {
    background: rgba(255,255,255,.15);
    border-color: rgba(255,255,255,.3);
    color: white;
}

/* Color toggles */
.toggle-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 5px;
}

.color-toggle {
    width: 100%; aspect-ratio: 1;
    border-radius: 5px;
    border: 2px solid transparent;
    cursor: pointer;
    opacity: .3;
    transition: opacity .15s, transform .15s, border-color .15s;
}
.color-toggle.active { opacity: 1; border-color: white; }
.color-toggle:hover { transform: scale(1.1); }

/* Luck row */
.luck-row { display: flex; align-items: center; gap: 8px; }
.luck-row input[type=range] {
    flex: 1;
    accent-color: #9333ea;
    cursor: pointer;
}
#luck-val { font-size: 11px; color: #c084fc; font-weight: 700; min-width: 28px; }

/* Regen button */
.regen-btn {
    width: 100%;
    padding: 8px;
    border-radius: 6px;
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.15);
    color: white;
    font-weight: 700;
    font-size: 12px;
    cursor: pointer;
    transition: background .15s;
}
.regen-btn:hover { background: rgba(255,255,255,.15); }

/* Stats */
.stat-row {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text);
    padding: 2px 0;
}
.stat-row strong { color: white; }
.purple-stat strong { color: #c084fc; }

/* ── Feed ── */
main#feed {
    flex: 1;
    padding: 72px 40px 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    width: 100%;
}

main#feed.layout-wide    { max-width: none; }
main#feed.layout-masonry {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    align-items: start;
}

.empty-msg {
    color: var(--text);
    opacity: .4;
    font-size: 14px;
    margin-top: 80px;
}

/* ── Items ── */
.item {
    width: min(460px, 100%);
    border-radius: 10px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: transform .15s ease, box-shadow .15s ease, filter .15s;
    animation: fadeSlideIn .35s ease both;
}

.layout-wide .item    { width: min(640px, 100%); }
.layout-masonry .item { width: 100%; }

.item:hover { transform: translateY(-2px) scale(1.01); }
.item.open  { outline: 2px solid rgba(255,255,255,.4); outline-offset: 2px; }

.item.tall   { height: 96px; }
.item.medium { height: 64px; }
.item.short  { height: 44px; }
.item.wide   { height: 44px; width: min(600px, 100%); }

/* ── Color styles: flat (default) ── */
.item.red    { background: #e53e3e; box-shadow: 0 3px 16px rgba(229,62,62,.3); }
.item.blue   { background: #3182ce; box-shadow: 0 3px 16px rgba(49,130,206,.3); }
.item.green  { background: #38a169; box-shadow: 0 3px 16px rgba(56,161,105,.3); }
.item.yellow { background: #d69e2e; box-shadow: 0 3px 16px rgba(214,158,46,.3); }
.item.orange { background: #dd6b20; box-shadow: 0 3px 16px rgba(221,107,32,.3); }
.item.teal   { background: #319795; box-shadow: 0 3px 16px rgba(49,151,149,.3); }
.item.pink   { background: #d53f8c; box-shadow: 0 3px 16px rgba(213,63,140,.3); }
.item.indigo { background: #5a67d8; box-shadow: 0 3px 16px rgba(90,103,216,.3); }
.item.lime   { background: #68d391; box-shadow: 0 3px 16px rgba(104,211,145,.3); }

/* gradient style */
body.style-gradient .item.red    { background: linear-gradient(135deg,#c53030,#fc8181); }
body.style-gradient .item.blue   { background: linear-gradient(135deg,#2b6cb0,#90cdf4); }
body.style-gradient .item.green  { background: linear-gradient(135deg,#276749,#9ae6b4); }
body.style-gradient .item.yellow { background: linear-gradient(135deg,#975a16,#faf089); }
body.style-gradient .item.orange { background: linear-gradient(135deg,#9c4221,#fbd38d); }
body.style-gradient .item.teal   { background: linear-gradient(135deg,#285e61,#81e6d9); }
body.style-gradient .item.pink   { background: linear-gradient(135deg,#97266d,#fbb6ce); }
body.style-gradient .item.indigo { background: linear-gradient(135deg,#434190,#c3dafe); }
body.style-gradient .item.lime   { background: linear-gradient(135deg,#276749,#f0fff4); }

/* neon style */
body.style-neon .item {
    background: transparent !important;
    box-shadow: none !important;
}
body.style-neon .item.red    { border: 2px solid #fc8181; box-shadow: 0 0 12px #fc8181, inset 0 0 20px rgba(252,129,129,.1) !important; }
body.style-neon .item.blue   { border: 2px solid #63b3ed; box-shadow: 0 0 12px #63b3ed, inset 0 0 20px rgba(99,179,237,.1) !important; }
body.style-neon .item.green  { border: 2px solid #68d391; box-shadow: 0 0 12px #68d391, inset 0 0 20px rgba(104,211,145,.1) !important; }
body.style-neon .item.yellow { border: 2px solid #f6e05e; box-shadow: 0 0 12px #f6e05e, inset 0 0 20px rgba(246,224,94,.1) !important; }
body.style-neon .item.orange { border: 2px solid #f6ad55; box-shadow: 0 0 12px #f6ad55, inset 0 0 20px rgba(246,173,85,.1) !important; }
body.style-neon .item.teal   { border: 2px solid #4fd1c5; box-shadow: 0 0 12px #4fd1c5, inset 0 0 20px rgba(79,209,197,.1) !important; }
body.style-neon .item.pink   { border: 2px solid #f687b3; box-shadow: 0 0 12px #f687b3, inset 0 0 20px rgba(246,135,179,.1) !important; }
body.style-neon .item.indigo { border: 2px solid #7f9cf5; box-shadow: 0 0 12px #7f9cf5, inset 0 0 20px rgba(127,156,245,.1) !important; }
body.style-neon .item.lime   { border: 2px solid #9ae6b4; box-shadow: 0 0 12px #9ae6b4, inset 0 0 20px rgba(154,230,180,.1) !important; }

/* pastel style */
body.style-pastel .item.red    { background: #fed7d7; box-shadow: none; }
body.style-pastel .item.blue   { background: #bee3f8; box-shadow: none; }
body.style-pastel .item.green  { background: #c6f6d5; box-shadow: none; }
body.style-pastel .item.yellow { background: #fefcbf; box-shadow: none; }
body.style-pastel .item.orange { background: #feebc8; box-shadow: none; }
body.style-pastel .item.teal   { background: #b2f5ea; box-shadow: none; }
body.style-pastel .item.pink   { background: #fed7e2; box-shadow: none; }
body.style-pastel .item.indigo { background: #c3dafe; box-shadow: none; }
body.style-pastel .item.lime   { background: #f0fff4; box-shadow: none; }

/* ── Purple: always special ── */
.item.purple {
    background: linear-gradient(135deg, #581c87, #9333ea, #c084fc) !important;
    box-shadow: 0 0 28px rgba(147,51,234,.65), 0 4px 16px rgba(147,51,234,.4) !important;
    animation: fadeSlideIn .35s ease both, purplePulse 2.5s ease-in-out infinite;
}
.item.purple::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,.2) 50%, transparent 70%);
    animation: shimmer 2.8s ease-in-out infinite;
}
.item.purple::after {
    content: '✦';
    position: absolute;
    right: 14px; top: 50%;
    transform: translateY(-50%);
    font-size: 16px;
    color: rgba(255,255,255,.55);
    animation: spin 7s linear infinite;
    pointer-events: none;
}

/* ── Selected ── */
.item.selected {
    filter: brightness(1.15);
    outline: 2px solid rgba(255,255,255,.7);
    outline-offset: 2px;
}
.item.selected::after {
    content: '✓';
    position: absolute;
    right: 14px; top: 50%;
    transform: translateY(-50%);
    font-size: 18px;
    color: rgba(255,255,255,.9);
    font-weight: 900;
    text-shadow: 0 0 8px rgba(255,255,255,.6);
    pointer-events: none;
}
.item.purple.selected::after { content: '✦'; }

/* ── Ripple ── */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,.25);
    transform: scale(0);
    animation: rippleAnim .5s ease-out forwards;
    pointer-events: none;
}

/* ── Inner variants ── */
.inner-tags {
    position: absolute;
    left: 12px; top: 50%;
    transform: translateY(-50%);
    display: flex; gap: 6px; align-items: center;
}
.tag {
    display: inline-block;
    height: 10px; width: 50px;
    background: rgba(255,255,255,.45);
    border-radius: 3px;
}
.tag:nth-child(2) { width: 34px; }
.tag:nth-child(3) { width: 22px; }

.inner-dots {
    position: absolute;
    left: 12px; top: 50%;
    transform: translateY(-50%);
    display: flex; gap: 5px; align-items: center;
}
.dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,.5);
}

.inner-avatar {
    position: absolute;
    left: 12px; top: 50%;
    transform: translateY(-50%);
    display: flex; gap: 8px; align-items: center;
}
.av-circle {
    width: 28px; height: 28px;
    border-radius: 50%;
    background: rgba(255,255,255,.4);
    flex-shrink: 0;
}
.av-lines { display: flex; flex-direction: column; gap: 5px; }
.av-lines span {
    display: block;
    height: 8px; width: 80px;
    background: rgba(255,255,255,.35);
    border-radius: 2px;
}
.av-lines span:last-child { width: 50px; opacity: .6; }

.inner-banner {
    position: absolute;
    inset: 0;
    display: flex; align-items: flex-end;
}
.inner-banner span {
    display: block;
    height: 30%;
    width: 100%;
    background: rgba(0,0,0,.2);
}

.inner-stripes {
    position: absolute;
    inset: 0;
    display: flex;
}
.inner-stripes span {
    flex: 1;
    background: rgba(255,255,255,.07);
}
.inner-stripes span:nth-child(2) { background: rgba(0,0,0,.08); }

/* ── Thread ── */
.thread-wrap {
    width: min(460px, 100%);
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding-left: 24px;
    border-left: 3px solid rgba(255,255,255,.12);
    animation: expandDown .25s ease both;
    position: relative;
}
.thread-wrap::before {
    content: '';
    position: absolute;
    left: -3px; top: 0; bottom: 0;
    width: 3px;
    background: rgba(255,255,255,.12);
}
.thread-wrap.collapsing { animation: collapseUp .2s ease forwards; }

.layout-wide .thread-wrap    { width: min(640px, 100%); }
.layout-masonry .thread-wrap { width: 100%; }

.thread-item { width: 100% !important; }

.thread-depth-line {
    position: absolute;
    left: -16px; top: 50%;
    width: 12px; height: 2px;
    background: rgba(255,255,255,.15);
}

/* ── Color toggle backgrounds ── */
.color-toggle.red    { background: #e53e3e; }
.color-toggle.blue   { background: #3182ce; }
.color-toggle.green  { background: #38a169; }
.color-toggle.yellow { background: #d69e2e; }
.color-toggle.orange { background: #dd6b20; }
.color-toggle.teal   { background: #319795; }
.color-toggle.pink   { background: #d53f8c; }
.color-toggle.indigo { background: #5a67d8; }
.color-toggle.lime   { background: #68d391; }
.color-toggle.purple { background: linear-gradient(135deg,#581c87,#9333ea); }

/* ── Keyframes ── */
@keyframes fadeSlideIn {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes purplePulse {
    0%,100% { box-shadow: 0 0 28px rgba(147,51,234,.65), 0 4px 16px rgba(147,51,234,.4); }
    50%      { box-shadow: 0 0 48px rgba(147,51,234,.9), 0 8px 28px rgba(147,51,234,.65); }
}
@keyframes shimmer {
    0%       { transform: translateX(-150%); }
    60%,100% { transform: translateX(150%); }
}
@keyframes spin {
    to { transform: translateY(-50%) rotate(360deg); }
}
@keyframes rippleAnim {
    to { transform: scale(1); opacity: 0; }
}
@keyframes expandDown {
    from { opacity: 0; transform: translateY(-8px); max-height: 0; }
    to   { opacity: 1; transform: translateY(0); max-height: 1000px; }
}
@keyframes collapseUp {
    from { opacity: 1; transform: translateY(0); }
    to   { opacity: 0; transform: translateY(-6px); }
}

/* ── Responsive ── */
@media (max-width: 768px) {
    main#feed { padding: 64px 16px 60px; }
    .item, .thread-wrap { width: 90% !important; }
}