:root {
    --gold: #C9A84C;
    --gold-bright: #F0C040;
    --gold-dim: #8A6A20;
    --ore: #2A2318;
    --rock: #1A1810;
    --stone: #2E2B22;
    --dust: #6B6248;
    --cream: #E8D9B0;
    --panel-bg: rgba(20, 18, 12, 0.92);
    --panel-border: rgba(201, 168, 76, 0.25);
  }

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

  html, body {
    font-family: 'DM Sans', sans-serif;
    background: var(--rock);
    color: var(--cream);
    height: 100%;
    width: 100%;
    max-width: 100vw;
    overflow: hidden;
    position: fixed;
  }

  #map {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
  }

  .mapboxgl-ctrl-top-left {
    top: 130px !important;
    left: 12px !important;
  }

  .mapboxgl-ctrl-zoom-in,
  .mapboxgl-ctrl-zoom-out {
    width: 38px !important;
    height: 38px !important;
    font-size: 20px !important;
  }

  .mapboxgl-ctrl-group {
    border-radius: 10px !important;
  }

  .mapboxgl-ctrl-bottom-left {
    bottom: 80px !important;
    left: 12px !important;
  }

  /* ── TOP BAR ── */
  #topbar {
    position: absolute;
    top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    padding-right: 20px;
    background: linear-gradient(to bottom, rgba(16,14,8,0.95) 0%, rgba(16,14,8,0) 100%);
    pointer-events: none;
    box-sizing: border-box;
    max-width: 100vw;
  }

  #logo {
    display: flex;
    align-items: center;
    gap: 8px;
    pointer-events: auto;
  }

  #logo .icon {
    font-size: 22px;
    line-height: 1;
  }

  #logo .wordmark {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 26px;
    letter-spacing: 0.08em;
    color: var(--gold-bright);
    text-shadow: 0 0 20px rgba(240, 192, 64, 0.4);
    line-height: 1;
  }

  #logo .tagline {
    font-family: 'DM Mono', monospace;
    font-size: 9px;
    color: var(--dust);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-top: 2px;
  }

  #top-actions {
    display: flex;
    gap: 8px;
    pointer-events: auto;
    padding-right: 8px;
  }

  .icon-btn {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    border: 1px solid var(--panel-border);
    background: var(--panel-bg);
    color: var(--cream);
    font-size: 17px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    backdrop-filter: blur(8px);
  }

  .icon-btn:hover, .icon-btn.active {
    border-color: var(--gold);
    color: var(--gold-bright);
    background: rgba(201, 168, 76, 0.12);
  }

  /* ── SEARCH BAR ── */
  #searchbar {
    position: absolute;
    top: 72px;
    left: 16px;
    right: 20px;
    z-index: 100;
    box-sizing: border-box;
  }

  #search-input-wrap {
    display: flex;
    align-items: center;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    padding: 0 14px;
    gap: 10px;
    backdrop-filter: blur(12px);
    transition: border-color 0.2s;
  }

  #search-input-wrap:focus-within {
    border-color: var(--gold);
  }

  #search-input-wrap .search-icon {
    color: var(--dust);
    font-size: 16px;
    flex-shrink: 0;
  }

  #search-input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--cream);
    font-family: 'DM Sans', sans-serif;
    font-size: 15px;
    padding: 12px 0;
  }

  #search-input::placeholder { color: var(--dust); }

  #search-filter-btn {
    background: none;
    border: none;
    color: var(--gold);
    font-size: 15px;
    cursor: pointer;
    padding: 4px;
    flex-shrink: 0;
  }

  /* ── LAYER PANEL ── */
  /* ── LAYER PANEL (full bottom sheet) ── */
  #layer-panel {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    z-index: 150;
    background: #0D0C09;
    border-top: 1px solid rgba(255,255,255,0.07);
    border-radius: 20px 20px 0 0;
    transform: translateY(100%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 88vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  #layer-panel.open { transform: translateY(0); }

  #layer-panel-handle {
    width: 40px; height: 4px;
    background: rgba(255,255,255,0.15);
    border-radius: 2px;
    margin: 12px auto 0;
  }

  #layer-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px 10px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    position: sticky;
    top: 0;
    background: #0D0C09;
    z-index: 10;
  }

  #layer-panel-header h3 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 20px;
    letter-spacing: 0.1em;
    color: var(--cream);
    margin: 0;
  }

  #layer-panel-close {
    width: 28px; height: 28px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    border: none;
    color: var(--cream);
    font-size: 16px;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    line-height: 1;
  }

  #layer-panel-scroll {
    padding: 8px 0 110px;
  }

  /* Region banner inside panel */
  #region-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(76,175,80,0.1);
    border: 1px solid rgba(76,175,80,0.25);
    border-radius: 10px;
    padding: 9px 14px;
    margin: 8px 16px 4px;
  }
  #region-banner .region-left {
    display: flex; align-items: center; gap: 7px;
    font-family: 'DM Sans', sans-serif;
    font-size: 13px; color: #E8D9B0;
  }
  #region-banner .region-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: #4CAF50; flex-shrink: 0;
  }
  #region-banner .region-state { font-weight: 500; color: #4CAF50; }
  #region-banner .switch-region {
    font-family: 'DM Mono', monospace; font-size: 11px;
    color: var(--gold); cursor: pointer;
    background: none; border: none; padding: 0;
    letter-spacing: 0.05em; transition: color 0.15s;
  }
  #region-banner .switch-region:hover { color: var(--gold-bright); }

  /* ── ACCORDION GROUPS ── */
  .layer-group {
    margin: 4px 0;
  }

  .group-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 20px 10px;
    cursor: pointer;
    user-select: none;
  }

  .group-header-left { flex: 1; }

  .group-title {
    font-size: 15px;
    font-weight: 600;
    color: #FFFFFF;
    letter-spacing: 0.01em;
  }

  .group-count {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    color: #555;
    margin-top: 2px;
    letter-spacing: 0.04em;
  }

  .group-arrow {
    font-size: 10px;
    color: #555;
    transition: transform 0.2s;
    flex-shrink: 0;
    padding-left: 8px;
  }

  .group-body {
    overflow: hidden;
    transition: max-height 0.3s ease;
    max-height: 600px;
  }

  .group-body.collapsed {
    max-height: 0;
  }

  /* Collapsed group card */
  .layer-group.is-collapsed .group-header {
    background: rgba(255,255,255,0.04);
    border-radius: 10px;
    margin: 0 12px;
    padding: 12px 16px;
  }
  .layer-group.is-collapsed .group-count { color: #444; }
  .layer-group.is-collapsed .group-arrow { transform: rotate(180deg); }

  /* Divider between groups */
  .group-divider {
    height: 1px;
    background: rgba(255,255,255,0.05);
    margin: 4px 20px;
  }

  /* ── LAYER ROWS ── */
  .layer-row {
    display: flex;
    align-items: center;
    padding: 10px 20px 10px 22px;
    cursor: pointer;
    transition: background 0.12s;
    gap: 12px;
    border-left: 2px solid transparent;
  }

  .layer-row:active { background: rgba(255,255,255,0.04); }

  .layer-row.on {
    background: rgba(201,168,76,0.08);
    border-left: 2px solid rgba(201,168,76,0.7);
  }

  .layer-bullet {
    font-size: 9px;
    flex-shrink: 0;
    color: #3A3A3A;
    transition: color 0.2s, font-size 0.15s;
    line-height: 1;
    margin-top: 1px;
  }

  .layer-bullet.on {
    color: #FFFFFF;
    font-size: 11px;
  }

  .layer-name {
    font-size: 14px;
    font-weight: 400;
    color: #888888;
    flex: 1;
    transition: color 0.15s, font-weight 0.15s;
    line-height: 1.3;
  }

  .layer-row:hover .layer-name { color: #CCCCCC; }
  .layer-pro-badge {
    font-family: 'DM Mono', monospace;
    font-size: 9px;
    font-weight: 500;
    color: #C9A84C;
    border: 1px solid rgba(201,168,76,0.5);
    border-radius: 3px;
    padding: 1px 4px;
    margin-left: 6px;
    letter-spacing: 0.05em;
    flex-shrink: 0;
  }

  .layer-name.on {
    color: #C9A84C;
    font-weight: 500;
  }

  .layer-badge {
    font-family: 'DM Mono', monospace;
    font-size: 9px;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(240,192,64,0.12);
    border: 1px solid rgba(240,192,64,0.25);
    color: var(--gold-dim);
    flex-shrink: 0;
  }

  /* ── TOGGLE SWITCH (keep for compatibility) ── */
  .toggle {
    width: 34px; height: 20px;
    background: #1E1E1E;
    border-radius: 10px;
    position: relative;
    cursor: pointer;
    transition: background 0.2s;
    flex-shrink: 0;
    border: 1px solid rgba(255,255,255,0.06);
    display: none; /* hidden — bullet indicates state */
  }

  .toggle.on { background: var(--gold-dim); border-color: var(--gold); }

  .toggle::after {
    content: '';
    position: absolute;
    width: 14px; height: 14px;
    border-radius: 50%;
    background: var(--dust);
    top: 2px; left: 2px;
    transition: transform 0.2s, background 0.2s;
  }

  .toggle.on::after {
    transform: translateX(14px);
    background: var(--gold-bright);
  }

  /* ── BOTTOM NAV ── */
  #bottom-nav {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    z-index: 100;
    background: linear-gradient(to top, rgba(16,14,8,0.98) 60%, rgba(16,14,8,0) 100%);
    padding: 12px 8px 28px;
    display: flex;
    justify-content: space-around;
    align-items: center;
    box-sizing: border-box;
    max-width: 100vw;
    overflow: hidden;
  }

  .nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    padding: 6px 16px;
    border-radius: 10px;
    transition: all 0.15s;
    border: 1px solid transparent;
  }

  .nav-item.active {
    background: rgba(201, 168, 76, 0.1);
    border-color: var(--panel-border);
  }

  .nav-item .nav-icon {
    font-size: 22px;
    line-height: 1;
    transition: transform 0.15s;
    color: var(--dust);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .nav-item.active .nav-icon {
    transform: scale(1.1);
    color: var(--gold);
    filter: drop-shadow(0 0 5px rgba(240,192,64,0.5));
  }

  .nav-item:active {
    transform: scale(0.9);
    background: rgba(201,168,76,0.15);
    border-color: var(--gold);
    transition: transform 0.08s;
  }

  .nav-item .nav-label {
    font-family: 'DM Mono', monospace;
    font-size: 9px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--dust);
    transition: color 0.15s;
  }

  .nav-item.active .nav-label { color: var(--gold); }

  /* ── FAB ── */
  #fab {
    position: absolute;
    bottom: 88px;
    right: 20px;
    z-index: 100;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gold-bright), var(--gold-dim));
    border: none;
    cursor: grab;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    box-shadow: 0 4px 20px rgba(201, 168, 76, 0.4);
    transition: all 0.2s;
    user-select: none;
    touch-action: none;
  }

  #fab:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 28px rgba(201, 168, 76, 0.55);
  }

  #fab.dragging {
    cursor: grabbing;
    transform: scale(1.2);
    opacity: 0.85;
    transition: none;
    z-index: 200;
  }

  #fab-hint {
    position: absolute;
    bottom: 148px;
    right: 14px;
    z-index: 100;
    font-family: 'DM Mono', monospace;
    font-size: 9px;
    letter-spacing: 0.08em;
    color: var(--dust);
    text-align: center;
    width: 64px;
    line-height: 1.4;
    pointer-events: none;
  }

  /* ── MAP STYLE SWITCHER ── */
  #style-switcher {
    position: absolute;
    top: 70px;
    right: 68px;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 6px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 0.2s, transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  }

  #style-switcher.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .style-btn {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    color: var(--cream);
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.08em;
    padding: 8px 14px;
    border-radius: 8px;
    cursor: pointer;
    text-align: right;
    backdrop-filter: blur(8px);
    transition: all 0.15s;
    white-space: nowrap;
    align-self: flex-end;
  }

  .style-btn:hover, .style-btn.active {
    border-color: var(--gold);
    color: var(--gold-bright);
  }

  /* Token input hidden */
  #token-input { display: none; }

  /* ── SEARCH RESULTS ── */
  #search-results {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    margin-top: 6px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    overflow: hidden;
    backdrop-filter: blur(16px);
    z-index: 200;
    display: none;
    max-height: 320px;
    overflow-y: auto;
  }

  #search-results.show { display: block; }

  .search-result-item {
    padding: 11px 16px;
    cursor: pointer;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    transition: background 0.15s;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .search-result-item:last-child { border-bottom: none; }
  .search-result-item:hover { background: rgba(201,168,76,0.08); }

  .result-icon { font-size: 14px; flex-shrink: 0; }

  .result-text { flex: 1; min-width: 0; }

  .result-name {
    font-size: 13px;
    color: var(--cream);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .result-sub {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    color: var(--dust);
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .result-tag {
    font-family: 'DM Mono', monospace;
    font-size: 9px;
    padding: 2px 6px;
    border-radius: 4px;
    flex-shrink: 0;
  }

  .result-tag.active {
    background: rgba(76,175,80,0.15);
    border: 1px solid rgba(76,175,80,0.4);
    color: #4CAF50;
  }

  .result-tag.place {
    background: rgba(33,150,243,0.15);
    border: 1px solid rgba(33,150,243,0.4);
    color: #2196F3;
  }

  .search-section-label {
    padding: 8px 16px 4px;
    font-family: 'DM Mono', monospace;
    font-size: 9px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--dust);
    background: rgba(0,0,0,0.2);
  }

  /* ── SCALE / COMPASS ── */
  .mapboxgl-ctrl-scale {
    background: var(--panel-bg) !important;
    border-color: var(--gold-dim) !important;
    color: var(--cream) !important;
    font-family: 'DM Mono', monospace !important;
    font-size: 10px !important;
  }

  .mapboxgl-ctrl-group {
    background: var(--panel-bg) !important;
    border: 1px solid var(--panel-border) !important;
    border-radius: 8px !important;
  }

  .mapboxgl-ctrl-group button {
    background-color: transparent !important;
  }

  /* ── STATUS PILL ── */
  #status-pill {
    position: absolute;
    top: 130px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 20px;
    padding: 6px 14px;
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.1em;
    color: var(--dust);
    backdrop-filter: blur(8px);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s;
    white-space: nowrap;
  }

  #status-pill.show { opacity: 1; }

  /* ── FIND LOG PANEL ── */
  #find-panel {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    z-index: 150;
    background: var(--panel-bg);
    border-top: 1px solid var(--panel-border);
    border-radius: 20px 20px 0 0;
    padding: 20px 20px 100px;
    backdrop-filter: blur(20px);
    transform: translateY(100%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 70vh;
    overflow-y: auto;
  }

  #find-panel.open { transform: translateY(0); }

  #find-panel .panel-handle {
    width: 40px;
    height: 4px;
    background: var(--stone);
    border-radius: 2px;
    margin: 0 auto 20px;
  }

  #find-panel h3 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 22px;
    letter-spacing: 0.08em;
    color: var(--gold);
    margin-bottom: 18px;
  }

  .find-form-row {
    margin-bottom: 14px;
  }

  .find-form-row label {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--dust);
    display: block;
    margin-bottom: 6px;
  }

  .find-form-row input,
  .find-form-row select,
  .find-form-row textarea {
    width: 100%;
    background: var(--stone);
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    padding: 11px 14px;
    color: var(--cream);
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
    -webkit-appearance: none;
  }

  .find-form-row input:focus,
  .find-form-row select:focus,
  .find-form-row textarea:focus {
    border-color: var(--gold);
  }

  .find-form-row textarea { resize: none; height: 80px; }

  .find-submit {
    width: 100%;
    background: linear-gradient(135deg, var(--gold-bright), var(--gold-dim));
    border: none;
    border-radius: 10px;
    padding: 14px;
    font-family: 'Bebas Neue', sans-serif;
    font-size: 19px;
    letter-spacing: 0.1em;
    color: var(--rock);
    cursor: pointer;
    margin-top: 6px;
  }

  /* ── OVERLAY ── */
  #overlay {
    position: absolute;
    inset: 0;
    z-index: 140;
    background: rgba(0,0,0,0.5);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
  }

  #overlay.show {
    opacity: 1;
    pointer-events: auto;
  }

  /* ── GPS PULSE ── */
  /* ── ACCOUNT PANEL ── */
  #account-panel {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    z-index: 150;
    background: var(--panel-bg);
    border-top: 1px solid var(--panel-border);
    border-radius: 20px 20px 0 0;
    padding: 20px 0 100px;
    backdrop-filter: blur(20px);
    transform: translateY(100%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 85vh;
    overflow-y: auto;
  }

  #account-panel.open { transform: translateY(0); }

  #account-panel .panel-handle {
    width: 40px;
    height: 4px;
    background: var(--stone);
    border-radius: 2px;
    margin: 0 auto 16px;
  }

  .account-tabs {
    display: flex;
    border-bottom: 1px solid var(--panel-border);
    margin-bottom: 0;
    padding: 0 20px;
    gap: 4px;
  }

  .account-tab {
    padding: 10px 16px;
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--dust);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.15s;
    white-space: nowrap;
  }

  .account-tab.active {
    color: var(--gold);
    border-bottom-color: var(--gold);
  }

  .account-tab-content {
    display: none;
    padding: 16px 20px;
  }

  .account-tab-content.active { display: block; }

  .account-item {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    cursor: pointer;
    transition: background 0.15s;
  }

  .account-item:last-child { border-bottom: none; }
  .account-item:hover .account-item-name { color: var(--gold); }

  .account-item-name {
    font-size: 14px;
    color: var(--cream);
    margin-bottom: 3px;
    transition: color 0.15s;
  }

  .account-item-sub {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    color: var(--dust);
  }

  .account-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--dust);
    font-size: 13px;
    line-height: 1.6;
  }

  .account-empty .empty-icon { font-size: 36px; margin-bottom: 12px; }

  /* ── SPOT PANEL ── */
  #spot-panel {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    z-index: 150;
    background: var(--panel-bg);
    border-top: 1px solid var(--panel-border);
    border-radius: 20px 20px 0 0;
    padding: 20px 20px 100px;
    backdrop-filter: blur(20px);
    transform: translateY(100%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 75vh;
    overflow-y: auto;
  }

  #spot-panel.open { transform: translateY(0); }

  #spot-panel .panel-handle {
    width: 40px;
    height: 4px;
    background: var(--stone);
    border-radius: 2px;
    margin: 0 auto 20px;
  }

  #spot-panel h3 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 22px;
    letter-spacing: 0.08em;
    color: var(--gold);
    margin-bottom: 16px;
  }

  .spot-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
  }

  .spot-cat-btn {
    padding: 6px 12px;
    border-radius: 20px;
    border: 1px solid var(--panel-border);
    background: var(--stone);
    color: var(--dust);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.15s;
  }

  .spot-cat-btn.selected {
    border-color: var(--gold);
    color: var(--gold-bright);
    background: rgba(201,168,76,0.12);
  }

  /* Spot markers on map */
  .spot-marker {
    width: 28px;
    height: 28px;
    border-radius: 50% 50% 50% 0;
    transform: rotate(-45deg);
    border: 2px solid white;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.4);
  }

  /* ── CLAIM PANEL ── */
  #claim-panel {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    z-index: 150;
    background: #0D0C09;
    border-top: 1px solid rgba(201,168,76,0.2);
    border-radius: 20px 20px 0 0;
    padding: 0 0 110px;
    transform: translateY(100%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 82vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  #claim-panel.open { transform: translateY(0); }

  #claim-panel .panel-handle {
    width: 40px; height: 4px;
    background: rgba(255,255,255,0.12);
    border-radius: 2px;
    margin: 12px auto 0;
  }

  #claim-panel-header {
    padding: 14px 20px 12px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }

  #claim-panel-name {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 24px;
    letter-spacing: 0.06em;
    color: var(--gold-bright);
    line-height: 1;
  }

  #claim-panel-serial {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    color: var(--dust);
    margin-top: 3px;
  }

  .claim-section {
    padding: 14px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
  }

  .claim-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 0;
  }

  .claim-row-label {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--dust);
  }

  .claim-row-value {
    font-size: 13px;
    color: var(--cream);
    font-weight: 500;
    text-align: right;
    max-width: 60%;
  }

  .claim-badge-row {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    padding: 10px 0 4px;
  }

  .claim-badge {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    padding: 4px 10px;
    border-radius: 20px;
    letter-spacing: 0.05em;
  }

  .claim-badge.active {
    background: rgba(76,175,80,0.15);
    border: 1px solid rgba(76,175,80,0.4);
    color: #4CAF50;
  }

  .claim-badge.type {
    background: rgba(201,168,76,0.1);
    border: 1px solid rgba(201,168,76,0.3);
    color: var(--gold);
  }

  .claim-type-desc {
    font-size: 12px;
    color: var(--dust);
    margin-top: 4px;
    line-height: 1.5;
  }

  .claim-nearby-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .claim-nearby-card {
    background: rgba(255,255,255,0.04);
    border-radius: 8px;
    padding: 10px 12px;
    cursor: pointer;
    transition: background 0.15s;
  }

  .claim-nearby-card:hover { background: rgba(255,255,255,0.07); }

  .claim-nearby-num {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 22px;
    letter-spacing: 0.04em;
    line-height: 1;
  }

  .claim-nearby-lbl {
    font-family: 'DM Mono', monospace;
    font-size: 9px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--dust);
    margin-top: 3px;
  }

  .claim-links {
    display: flex;
    gap: 8px;
    padding: 14px 20px;
    flex-wrap: wrap;
  }

  .claim-link-btn {
    flex: 1;
    min-width: 80px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    padding: 9px 8px;
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.06em;
    color: var(--gold);
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: all 0.15s;
    display: block;
  }

  .claim-link-btn:hover {
    border-color: var(--gold);
    background: rgba(201,168,76,0.08);
  }

  .claim-action-btns {
    display: flex;
    gap: 10px;
    padding: 0 20px 14px;
  }

  .claim-save-btn {
    flex: 1;
    background: rgba(201,168,76,0.12);
    border: 1px solid rgba(201,168,76,0.4);
    border-radius: 10px;
    padding: 13px;
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    font-weight: 500;
    color: var(--gold-bright);
    cursor: pointer;
    transition: all 0.15s;
  }

  .claim-save-btn:hover { background: rgba(201,168,76,0.2); }

  .claim-watch-btn {
    flex: 1;
    background: rgba(33,150,243,0.1);
    border: 1px solid rgba(33,150,243,0.3);
    border-radius: 10px;
    padding: 13px;
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    font-weight: 500;
    color: #64B5F6;
    cursor: pointer;
    transition: all 0.15s;
  }

  .claim-watch-btn:hover { background: rgba(33,150,243,0.18); }

  /* ── RESTRICTION LEGEND ── */
  #restriction-legend {
    position: absolute;
    bottom: 100px;
    left: 16px;
    z-index: 100;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    padding: 10px 14px;
    backdrop-filter: blur(12px);
    display: none;
    min-width: 180px;
  }

  #restriction-legend h4 {
    font-family: 'DM Mono', monospace;
    font-size: 9px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--dust);
    margin-bottom: 8px;
  }

  .legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 3px 0;
    font-size: 11px;
    color: var(--cream);
  }

  .legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    flex-shrink: 0;
  }

  /* ── COMPASS & 3D BUTTON ── */
  #custom-compass {
    position: absolute;
    top: 130px;
    right: 20px;
    left: auto;
    z-index: 100;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    transition: border-color 0.15s;
  }

  #custom-compass:hover { border-color: var(--gold); }

  #compass-arrow {
    font-size: 18px;
    color: #F44336;
    transition: transform 0.3s;
    line-height: 1;
  }

  #terrain-toggle-btn {
    position: absolute;
    top: 176px;
    right: 20px;
    left: auto;
    z-index: 100;
    width: 38px;
    height: 38px;
    border-radius: 8px;
    border: 1px solid var(--panel-border);
    background: var(--panel-bg);
    color: var(--gold);
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    transition: all 0.15s;
    letter-spacing: 0.05em;
  }

  #terrain-toggle-btn.active {
    background: rgba(201,168,76,0.15);
    border-color: var(--gold);
  }

  #terrain-toggle-btn:hover { border-color: var(--gold); }

  /* ── DRAW SEARCH ── */
  #draw-btn {
    position: absolute;
    top: 72px;
    right: 20px;
    z-index: 100;
    width: 38px;
    height: 38px;
    border-radius: 8px;
    border: 1px solid var(--panel-border);
    background: var(--panel-bg);
    color: var(--cream);
    font-size: 17px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    backdrop-filter: blur(8px);
  }

  #draw-btn.active {
    border-color: var(--gold);
    color: var(--gold-bright);
    background: rgba(201,168,76,0.15);
  }

  #draw-hint {
    position: absolute;
    top: 118px;
    right: 20px;
    z-index: 100;
    background: var(--panel-bg);
    border: 1px solid var(--gold);
    border-radius: 8px;
    padding: 8px 12px;
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.08em;
    color: var(--gold);
    backdrop-filter: blur(8px);
    display: none;
    max-width: 160px;
    line-height: 1.5;
  }

  #draw-results {
    position: absolute;
    bottom: 100px;
    left: 16px;
    right: 16px;
    z-index: 100;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    padding: 14px 16px;
    backdrop-filter: blur(16px);
    display: none;
    max-height: 200px;
    overflow-y: auto;
  }

  #draw-results h4 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 16px;
    letter-spacing: 0.08em;
    color: var(--gold);
    margin-bottom: 10px;
  }

  .draw-result-item {
    padding: 6px 0;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    font-size: 12px;
    color: var(--cream);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .draw-result-item:hover { color: var(--gold); }
  .draw-result-item:last-child { border-bottom: none; }

  /* ── AUTH PANEL ── */
  #auth-panel {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    z-index: 150;
    background: var(--panel-bg);
    border-top: 1px solid var(--panel-border);
    border-radius: 20px 20px 0 0;
    padding: 24px 20px 100px;
    backdrop-filter: blur(20px);
    transform: translateY(100%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 80vh;
    overflow-y: auto;
  }

  #auth-panel.open { transform: translateY(0); }

  #auth-panel .panel-handle {
    width: 40px;
    height: 4px;
    background: var(--stone);
    border-radius: 2px;
    margin: 0 auto 20px;
  }

  #auth-panel h3 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 26px;
    letter-spacing: 0.08em;
    color: var(--gold);
    margin-bottom: 6px;
  }

  #auth-panel .auth-sub {
    font-size: 13px;
    color: var(--dust);
    margin-bottom: 24px;
  }

  .auth-form-row {
    margin-bottom: 14px;
  }

  .auth-form-row label {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--dust);
    display: block;
    margin-bottom: 6px;
  }

  .auth-form-row input {
    width: 100%;
    background: var(--stone);
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    padding: 12px 14px;
    color: var(--cream);
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
    -webkit-appearance: none;
    box-sizing: border-box;
  }

  .auth-form-row input:focus { border-color: var(--gold); }

  .auth-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--gold-bright), var(--gold-dim));
    border: none;
    border-radius: 10px;
    padding: 14px;
    font-family: 'Bebas Neue', sans-serif;
    font-size: 19px;
    letter-spacing: 0.1em;
    color: var(--rock);
    cursor: pointer;
    margin-top: 6px;
    transition: opacity 0.2s;
  }

  .auth-btn:hover { opacity: 0.88; }

  .auth-google-btn {
    width: 100%;
    background: var(--stone);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    padding: 13px;
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    font-weight: 500;
    color: var(--cream);
    cursor: pointer;
    margin-top: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: border-color 0.2s;
  }

  .auth-google-btn:hover { border-color: var(--gold); }

  .auth-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 16px 0;
    color: var(--dust);
    font-size: 12px;
  }

  .auth-divider::before, .auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--panel-border);
  }

  .auth-switch {
    text-align: center;
    margin-top: 16px;
    font-size: 13px;
    color: var(--dust);
  }

  .auth-switch a {
    color: var(--gold);
    cursor: pointer;
    text-decoration: none;
  }

  .auth-error {
    background: rgba(244,67,54,0.1);
    border: 1px solid rgba(244,67,54,0.3);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 12px;
    color: #F44336;
    margin-bottom: 14px;
    display: none;
  }

  /* User menu */
  #user-menu {
    position: absolute;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    z-index: 100;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 14px;
    padding: 16px;
    width: 220px;
    backdrop-filter: blur(16px);
    opacity: 0;
    pointer-events: none;
    transition: all 0.2s;
  }

  #user-menu.show {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
  }

  #user-email {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    color: var(--dust);
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--panel-border);
    word-break: break-all;
  }

  .user-menu-item {
    padding: 8px 0;
    font-size: 13px;
    color: var(--cream);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .user-menu-item:hover { color: var(--gold); }

  /* Override Mapbox default popup styles */
  .mapboxgl-popup-content {
    background: transparent !important;
    padding: 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
  }
  .mapboxgl-popup-tip {
    display: none !important;
  }

  .gps-pulse {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--gold-bright);
    border: 2px solid white;
    box-shadow: 0 0 0 0 rgba(240,192,64,0.5);
    animation: pulse 2s infinite;
  }

  @keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(240,192,64,0.5); }
    70% { box-shadow: 0 0 0 12px rgba(240,192,64,0); }
    100% { box-shadow: 0 0 0 0 rgba(240,192,64,0); }
  }

  /* ── LAYER INFO BUTTON & TOOLTIP ── */
  .info-btn {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: none;
    border: 1px solid var(--dust);
    color: var(--dust);
    font-size: 11px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.15s;
    font-style: normal;
    font-family: 'DM Sans', sans-serif;
    padding: 0;
  }
  .info-btn:hover, .info-btn.active {
    border-color: var(--gold);
    color: var(--gold);
    background: rgba(201,168,76,0.1);
  }
  #layer-tooltip {
    position: fixed;
    z-index: 300;
    background: var(--ore);
    border: 1px solid var(--gold);
    border-radius: 8px;
    padding: 9px 12px;
    font-family: 'DM Sans', sans-serif;
    font-size: 12px;
    color: var(--cream);
    line-height: 1.5;
    max-width: 210px;
    pointer-events: none;
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.15s, transform 0.15s;
    box-shadow: 0 4px 16px rgba(0,0,0,0.5);
  }
  #layer-tooltip.show {
    opacity: 1;
    transform: translateY(0);
  }

  /* ── AI TOOLS MENU ── */
  #ai-tools-menu {
    position: absolute;
    top: 70px;
    right: 20px;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 6px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 0.2s, transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  }

  #ai-tools-menu.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .ai-menu-btn {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    color: var(--cream);
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.08em;
    padding: 9px 14px;
    border-radius: 8px;
    cursor: pointer;
    text-align: right;
    backdrop-filter: blur(8px);
    transition: all 0.15s;
    white-space: nowrap;
    align-self: flex-end;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .ai-menu-btn:hover {
    border-color: var(--gold);
    color: var(--gold-bright);
  }

  .ai-pro-pill {
    font-size: 8px;
    padding: 1px 5px;
    border-radius: 3px;
    background: rgba(240,192,64,0.15);
    border: 1px solid rgba(240,192,64,0.4);
    color: var(--gold-dim);
    letter-spacing: 0.08em;
  }

  /* ── AI PANELS ── */
  #rock-id-panel,
  #outcrop-panel {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    z-index: 150;
    background: #0D0C09;
    border-top: 1px solid rgba(201,168,76,0.2);
    border-radius: 20px 20px 0 0;
    transform: translateY(100%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 90vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  #rock-id-panel.open,
  #outcrop-panel.open { transform: translateY(0); }

  .ai-panel-handle {
    width: 40px; height: 4px;
    background: rgba(255,255,255,0.12);
    border-radius: 2px;
    margin: 12px auto 0;
  }

  .ai-panel-header {
    padding: 14px 20px 12px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    background: #0D0C09;
    z-index: 10;
  }

  .ai-panel-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 22px;
    letter-spacing: 0.08em;
    color: var(--gold);
    line-height: 1;
  }

  .ai-panel-subtitle {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    color: var(--dust);
    letter-spacing: 0.06em;
    margin-top: 3px;
  }

  .ai-panel-close {
    width: 28px; height: 28px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    border: none;
    color: var(--cream);
    font-size: 16px;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    line-height: 1;
  }

  .ai-panel-body {
    padding: 16px 20px 110px;
  }

  .ai-usage-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 8px;
    padding: 8px 12px;
    margin-bottom: 16px;
  }

  .ai-usage-label {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.06em;
    color: var(--dust);
  }

  .ai-usage-count {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    font-weight: 500;
    color: var(--gold);
  }

  .ai-desc {
    font-size: 13px;
    color: var(--dust);
    line-height: 1.65;
    margin-bottom: 16px;
  }

  .ai-upload-zone {
    border: 2px dashed rgba(201,168,76,0.3);
    border-radius: 14px;
    padding: 32px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    overflow: hidden;
    margin-bottom: 16px;
  }

  .ai-upload-zone:hover,
  .ai-upload-zone:active {
    border-color: var(--gold);
    background: rgba(201,168,76,0.05);
  }

  .ai-upload-zone input[type=file] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
    font-size: 100px;
  }

  .ai-upload-icon { font-size: 38px; margin-bottom: 10px; }

  .ai-upload-label {
    font-family: 'DM Sans', sans-serif;
    font-size: 15px;
    color: var(--cream);
    font-weight: 500;
  }

  .ai-upload-sub {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    color: var(--dust);
    margin-top: 5px;
    letter-spacing: 0.05em;
  }

  .ai-image-preview {
    display: none;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 16px;
    position: relative;
  }

  .ai-image-preview img {
    width: 100%;
    max-height: 220px;
    object-fit: cover;
    display: block;
  }

  .ai-preview-change {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0,0,0,0.72);
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: 6px;
    padding: 5px 11px;
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.06em;
    color: var(--cream);
    cursor: pointer;
  }

  .ai-loading {
    display: none;
    text-align: center;
    padding: 32px 20px;
  }

  .ai-loading-ring {
    width: 38px;
    height: 38px;
    border: 3px solid rgba(201,168,76,0.2);
    border-top-color: var(--gold);
    border-radius: 50%;
    animation: ai-spin 0.75s linear infinite;
    margin: 0 auto 14px;
  }

  @keyframes ai-spin { to { transform: rotate(360deg); } }

  .ai-loading-text {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    color: var(--dust);
    letter-spacing: 0.1em;
  }

  .ai-result { display: none; }

  .ai-result-section { margin-bottom: 18px; }

  .ai-result-label {
    font-family: 'DM Mono', monospace;
    font-size: 9px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gold-dim);
    margin-bottom: 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid rgba(201,168,76,0.15);
  }

  .ai-result-text {
    font-size: 14px;
    color: var(--cream);
    line-height: 1.7;
  }

  .ai-location-note {
    margin-top: 14px;
    padding: 8px 12px;
    background: rgba(255,255,255,0.04);
    border-radius: 8px;
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    color: var(--dust);
    letter-spacing: 0.05em;
    display: none;
  }

  .ai-new-btn {
    width: 100%;
    background: rgba(201,168,76,0.1);
    border: 1px solid rgba(201,168,76,0.35);
    border-radius: 10px;
    padding: 14px;
    font-family: 'Bebas Neue', sans-serif;
    font-size: 18px;
    letter-spacing: 0.1em;
    color: var(--gold-bright);
    cursor: pointer;
    margin-top: 18px;
    transition: all 0.15s;
  }

  .ai-new-btn:hover { background: rgba(201,168,76,0.18); }

  .ai-error {
    display: none;
    background: rgba(244,67,54,0.1);
    border: 1px solid rgba(244,67,54,0.3);
    border-radius: 8px;
    padding: 12px 14px;
    font-size: 13px;
    color: #F44336;
    margin-top: 12px;
    line-height: 1.5;
  }

  .ai-pro-gate {
    background: rgba(201,168,76,0.06);
    border: 1px solid rgba(201,168,76,0.2);
    border-radius: 14px;
    padding: 28px 20px;
    text-align: center;
    margin: 4px 0 16px;
  }

  .ai-pro-gate-icon { font-size: 34px; margin-bottom: 10px; }

  .ai-pro-gate-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 22px;
    letter-spacing: 0.08em;
    color: var(--gold);
    margin-bottom: 8px;
  }

  .ai-pro-gate-text {
    font-size: 13px;
    color: var(--dust);
    line-height: 1.65;
    margin-bottom: 18px;
  }

  .ai-upgrade-btn {
    background: linear-gradient(135deg, var(--gold-bright), var(--gold-dim));
    border: none;
    border-radius: 10px;
    padding: 12px 28px;
    font-family: 'Bebas Neue', sans-serif;
    font-size: 18px;
    letter-spacing: 0.1em;
    color: var(--rock);
    cursor: pointer;
    transition: opacity 0.15s;
  }

  .ai-upgrade-btn:hover { opacity: 0.88; }

  /* ── DESKTOP: layer panel as left sidebar ── */
  @media (min-width: 768px) {
    #layer-panel {
      top: 0;
      bottom: 0;
      left: 0;
      right: auto;
      width: 340px;
      border-radius: 0;
      border-top: none;
      border-right: 1px solid rgba(255,255,255,0.07);
      transform: translateX(-100%);
      transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      max-height: 100vh;
    }
    #layer-panel.open { transform: translateX(0); }
    #layer-panel-handle { display: none; }
  }