/* =========================================
       RANDOM LETTER GENERATOR — PREMIUM UI
       ========================================= */
    .da-wrapper {
        --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
        --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
        display: flex;
        justify-content: center;
            padding: clamp(0px, 5vw, 0px) 20px;
    }

    .da-panel {
        position: relative;                
        width: 100%;
        max-width: 1100px;
        border-radius: 28px;
        padding: clamp(28px, 5vw, 56px);
    }

    /* ---------- UI SHELL ---------- */
    .tool-widget { display: flex; flex-direction: column; gap: 24px; margin-bottom: 50px; animation: fadeIn 0.5s ease; }
    
    .sec-title { font-size: 14px; font-weight: 800; color: var(--text-main); display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
    .sec-title span { color: var(--primary-color); }
    
    /* Alpha Grid */
    .alpha-section { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 20px; padding: 24px; box-shadow: 0 10px 30px rgba(0,0,0,0.02); }
    .alpha-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
    
    .alpha-card { background: var(--bg-body); border: 1px solid var(--border-color); border-radius: 12px; padding: 16px; cursor: pointer; transition: all 0.2s; position: relative; display: flex; align-items: center; gap: 16px; overflow: hidden; }
    .alpha-card:hover { border-color: var(--primary-color); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.05); }
    .alpha-card.active { border-color: var(--primary-color); background: rgba(var(--primary-color-rgb), 0.05); box-shadow: 0 4px 12px rgba(var(--primary-color-rgb), 0.1); }
    
    .ac-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--primary-color); position: absolute; top: 12px; right: 12px; opacity: 0; transform: scale(0); transition: all 0.2s; }
    .alpha-card.active .ac-dot { opacity: 1; transform: scale(1); }
    
    .ac-sample { font-size: 24px; font-weight: 800; color: var(--primary-color); background: var(--card-bg); width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; border-radius: 10px; border: 1px solid var(--border-color); flex-shrink: 0; }
    .ac-info { display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0; }
    .ac-name { font-size: 14px; font-weight: 800; color: var(--text-main); display: flex; align-items: center; gap: 6px; }
    .ac-chars { font-size: 11px; font-weight: 700; color: var(--text-muted); opacity: 0.8; }
    .ac-preview { font-size: 10px; font-family: monospace; color: var(--text-muted); opacity: 0.5; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: 4px; }

    /* Options Bar */
    .options-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 16px; padding: 16px 24px; box-shadow: 0 10px 30px rgba(0,0,0,0.02); }
    .ob-label { font-size: 12px; font-weight: 800; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
    .ob-sep { width: 1px; height: 24px; background: var(--border-color); margin: 0 4px; }
    
    .mode-tabs, .case-tabs { display: flex; background: var(--bg-body); border: 1px solid var(--border-color); border-radius: 8px; padding: 4px; }
    .mt, .ct { background: transparent; border: none; padding: 6px 12px; font-size: 12px; font-weight: 800; color: var(--text-muted); border-radius: 6px; cursor: pointer; transition: all 0.2s; white-space: nowrap; }
    .mt.active, .ct.active { background: var(--card-bg); color: var(--primary-color); box-shadow: 0 2px 4px rgba(0,0,0,0.05); }
    
    .stepper { display: flex; align-items: center; background: var(--bg-body); border-radius: 8px; border: 1px solid var(--border-color); overflow: hidden; }
    .step-btn { background: transparent; border: none; padding: 6px 12px; font-size: 16px; font-weight: 700; color: var(--text-muted); cursor: pointer; transition: background 0.2s; }
    .step-btn:hover { background: rgba(0,0,0,0.05); }
    .step-num { width: 46px; text-align: center; background: transparent; border: none; font-size: 14px; font-weight: 800; color: var(--text-main); outline: none; }
    
    .sw { display: flex; align-items: center; gap: 8px; cursor: pointer; }
    .sw-t { width: 32px; height: 18px; border-radius: 18px; background: var(--border-color); position: relative; transition: background 0.3s; }
    .sw-t.on { background: var(--primary-color); }
    .sw-thumb { width: 14px; height: 14px; border-radius: 50%; background: #fff; position: absolute; top: 2px; left: 2px; transition: transform 0.3s var(--ease-spring); box-shadow: 0 2px 4px rgba(0,0,0,0.2); }
    .sw-t.on .sw-thumb { transform: translateX(14px); }
    .sw-lbl { font-size: 13px; font-weight: 800; color: var(--text-main); white-space: nowrap; }
    /* ---------- CUSTOM DROPDOWN ---------- */
    .custom-dropdown { position: relative; display: inline-block; user-select: none; }
    .cd-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; background: var(--bg-body); border: 1px solid var(--border-color); padding: 4px 10px; border-radius: 8px; font-size: 11px; font-weight: 800; color: var(--text-muted); cursor: pointer; transition: all 0.2s; min-width: 120px; height: 100%; }
    .cd-header:hover, .custom-dropdown.active .cd-header { border-color: var(--primary-color); color: var(--primary-color); background: var(--primary-light); }
    .cd-value { display: flex; align-items: center; gap: 8px; }
    .cd-body { position: absolute; top: calc(100% + 8px); right: 0; width: 220px; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.05); padding: 8px; z-index: 100; opacity: 0; visibility: hidden; transform: translateY(-10px); transition: all 0.2s; display: flex; flex-direction: column; gap: 8px; }
    .custom-dropdown.active .cd-body { opacity: 1; visibility: visible; transform: translateY(0); }
    .cd-search input { width: 100%; background: var(--bg-body); border: 1px solid var(--border-color); border-radius: 8px; padding: 8px 12px; font-size: 12px; color: var(--text-main); outline: none; }
    .cd-list { max-height: 200px; overflow-y: auto; display: flex; flex-direction: column; gap: 2px; }
    .cd-list::-webkit-scrollbar { width: 4px; }
    .cd-list::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
    .cd-item { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: 8px; font-size: 12px; font-weight: 700; color: var(--text-main); cursor: pointer; transition: background 0.2s; }
    .cd-item:hover { background: var(--bg-body); }
    .cd-item.active { background: rgba(var(--primary-color-rgb), 0.05); color: var(--primary-color); }

    .gen-wrap { display: flex; justify-content: center; margin: 8px 0; }
    .gen-btn { background: linear-gradient(135deg, var(--primary-color), var(--primary-gradient-end)); color: #fff; border: none; border-radius: 12px; padding: 16px 40px; font-size: 16px; font-weight: 900; display: inline-flex; align-items: center; gap: 10px; cursor: pointer; transition: all 0.2s; box-shadow: 0 4px 15px var(--primary-shadow); }
    .gen-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px var(--primary-shadow); }
    .gen-btn .die { display: inline-block; transition: transform 0.3s; }
    .gen-btn:active .die { transform: rotate(180deg); }

    /* Results Section */
    .featured-section { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 20px; padding: 32px; box-shadow: 0 10px 30px rgba(0,0,0,0.02); }
    
    .featured-row { display: grid; grid-template-columns: minmax(200px, 1fr) 2fr; gap: 24px; margin-bottom: 24px; }
    @media (max-width: 768px) { .featured-row { grid-template-columns: 1fr; } }
    
    .big-letter-card { background: rgba(var(--primary-color-rgb), 0.05); border: 1px solid var(--primary-light); border-radius: 16px; padding: 24px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; cursor: pointer; transition: all 0.2s; position: relative; }
    .big-letter-card:hover { border-color: var(--primary-color); transform: translateY(-2px); box-shadow: 0 10px 20px rgba(var(--primary-color-rgb), 0.1); }
    
    .big-letter { font-size: clamp(60px, 8vw, 90px); font-weight: 900; color: var(--primary-color); line-height: 1; margin-bottom: 16px; transition: transform 0.3s var(--ease-spring); }
    .big-letter.letter-pop { transform: scale(1.1); }
    .bl-meta { display: flex; flex-direction: column; gap: 4px; }
    .bl-pos { font-size: 13px; font-weight: 800; color: var(--text-main); }
    .bl-name { font-size: 11px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
    
    .alphabet-strip-card { background: var(--bg-body); border: 1px solid var(--border-color); border-radius: 16px; padding: 20px; display: flex; flex-direction: column; }
    .as-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
    .as-title { font-size: 12px; font-weight: 800; color: var(--text-main); display: flex; align-items: center; gap: 6px; }
    .as-strip { display: flex; flex-wrap: wrap; gap: 6px; }
    .as-letter { width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 800; color: var(--text-muted); background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 6px; cursor: pointer; transition: all 0.2s; }
    .as-letter:hover { border-color: var(--text-main); color: var(--text-main); }
    .as-letter.highlighted { background: rgba(239, 68, 68, 0.1); border-color: #ef4444; color: #ef4444; transform: translateY(-2px); font-size: 16px; box-shadow: 0 4px 8px rgba(239, 68, 68, 0.2); }
    
    .letter-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(80px, 1fr)); gap: 12px; margin-bottom: 24px; }
    .letter-card { background: var(--bg-body); border: 1px solid var(--border-color); border-radius: 12px; padding: 16px; position: relative; cursor: pointer; transition: all 0.2s; display: flex; align-items: center; justify-content: center; text-align: center; }
    .letter-card:hover { border-color: var(--primary-color); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.05); }
    .lc-char { font-size: 28px; font-weight: 900; color: var(--text-main); }
    .lc-pos { position: absolute; bottom: 6px; right: 8px; font-size: 10px; font-weight: 800; color: var(--text-muted); opacity: 0.5; }
    .lc-copy-icon { position: absolute; top: 6px; right: 8px; color: var(--text-muted); opacity: 0; transition: opacity 0.2s; }
    .letter-card:hover .lc-copy-icon { opacity: 1; }
    
    .copy-bar { display: flex; align-items: center; justify-content: space-between; background: var(--bg-body); border: 1px solid var(--border-color); border-radius: 12px; padding: 12px 16px; gap: 16px; }
    .cb-letters { flex: 1; font-size: 14px; font-weight: 800; font-family: monospace; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; letter-spacing: 2px; }
    .cb-actions { display: flex; gap: 8px; flex-shrink: 0; }
    .act-btn { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 8px; padding: 8px 12px; font-size: 12px; font-weight: 800; color: var(--text-main); cursor: pointer; transition: all 0.2s; display: flex; align-items: center; gap: 6px; }
    .act-btn:hover { border-color: var(--primary-color); color: var(--primary-color); }
    .act-btn.copied { background: var(--success); border-color: var(--success); color: #fff; }

    /* Freq Chart Section */
    .freq-section { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 20px; padding: 24px; box-shadow: 0 10px 30px rgba(0,0,0,0.02); }
    .fs-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
    .fs-title { font-size: 14px; font-weight: 800; color: var(--text-main); display: flex; align-items: center; gap: 8px; }
    
    .freq-bars { display: flex; flex-direction: column; gap: 8px; max-height: 240px; overflow-y: auto; padding-right: 8px; }
    .freq-empty { display: flex; align-items: center; justify-content: center; height: 100px; font-size: 13px; font-weight: 800; color: var(--text-muted); opacity: 0.6; }
    
    .freq-row { display: flex; align-items: center; gap: 12px; font-size: 12px; font-weight: 800; }
    .fr-char { width: 24px; text-align: center; color: var(--text-main); font-size: 14px; background: var(--bg-body); border: 1px solid var(--border-color); border-radius: 4px; padding: 2px 0; }
    .fr-track { flex: 1; height: 8px; background: var(--bg-body); border-radius: 4px; overflow: hidden; }
    .fr-fill { height: 100%; background: var(--primary-color); border-radius: 4px; transition: width 0.5s var(--ease-spring); }
    .fr-count { width: 30px; text-align: right; color: var(--text-muted); }

    /* History Section */
    .history-section { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 20px; padding: 24px; box-shadow: 0 10px 30px rgba(0,0,0,0.02); }
    .hs-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
    .hs-title { font-size: 14px; font-weight: 800; color: var(--text-main); display: flex; align-items: center; gap: 8px; }
    
    .history-chips { display: flex; flex-wrap: wrap; gap: 8px; }
    .h-chip { background: var(--bg-body); border: 1px solid var(--border-color); border-radius: 8px; padding: 6px 12px; font-size: 14px; font-weight: 800; color: var(--text-main); cursor: pointer; transition: all 0.2s; }
    .h-chip:hover { border-color: var(--primary-color); background: rgba(var(--primary-color-rgb), 0.05); color: var(--primary-color); }
    .h-empty { font-size: 13px; font-weight: 700; color: var(--text-muted); opacity: 0.6; display: flex; align-items: center; gap: 8px; width: 100%; justify-content: center; padding: 20px; border: 1px dashed var(--border-color); border-radius: 12px; }

    /* Stats Strip */
    .stats-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 16px; margin-bottom: 50px; }
    .stats-sc { background: var(--card-bg); border-radius: 16px; padding: 20px; border: 1px solid var(--border-color); display: flex; flex-direction: column; align-items: center; text-align: center; transition: transform 0.2s; }
    .stats-sc:hover { transform: translateY(-2px); }
    
    .stats-ico { width: 36px; height: 36px; border-radius: 10px; display: flex; align-items: center; justify-content: center; margin-bottom: 12px; }
    .stats-ico.red { background: rgba(239, 68, 68, 0.1); color: #ef4444; }
    .stats-ico.blue { background: rgba(59, 130, 246, 0.1); color: #3b82f6; }
    .stats-ico.green { background: rgba(34, 197, 94, 0.1); color: #22c55e; }
    .stats-ico.purple { background: rgba(168, 85, 247, 0.1); color: #a855f7; }
    
    .stats-val { font-size: 24px; font-weight: 900; color: var(--text-main); line-height: 1; margin-bottom: 4px; transition: transform 0.3s; }
    .stats-val.popped { transform: scale(1.2); color: var(--primary-color); }
    /* ── Comparison Panel & Analytics ── */
    .comparison-panel {
        background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 24px;
        padding: 28px; margin-top: 32px; box-shadow: 0 10px 30px rgba(0,0,0,0.02); margin-bottom: 40px;
    }
    .cp-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; flex-wrap: wrap; gap: 12px; }
    .cp-title { font-size: 16px; font-weight: 800; color: var(--text-main); display: flex; align-items: center; gap: 10px; }
    .cp-badge { font-size: 12px; font-weight: 800; padding: 6px 14px; border-radius: 100px; }
    .badge-high { background: color-mix(in srgb, var(--success, #10b981) 15%, transparent); color: var(--success, #10b981); border: 1px solid color-mix(in srgb, var(--success, #10b981) 30%, transparent); }

    .cp-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
    .cp-card { background: var(--bg-body); border: 1px solid var(--border-color); border-radius: 16px; padding: 20px; display: flex; flex-direction: column; gap: 14px; }
    .cpc-header { display: flex; justify-content: space-between; align-items: center; }
    .cpc-title { font-size: 13.5px; font-weight: 800; color: var(--text-main); }
    .cpc-tag { font-size: 11.5px; font-weight: 800; padding: 4px 10px; border-radius: 6px; }
    .cpc-tag.success { background: color-mix(in srgb, var(--success, #10b981) 15%, transparent); color: var(--success, #10b981); }

    .cpc-body { display: flex; flex-direction: column; gap: 10px; }
    .cpc-stat-row { font-size: 13px; color: var(--text-muted); display: flex; justify-content: space-between; }
    .cpc-stat-row strong { color: var(--text-main); font-weight: 700; }
    .cpc-progress-bar { width: 100%; height: 8px; background: var(--border-color); border-radius: 100px; overflow: hidden; margin-top: 4px; }
    .cpc-progress-fill { height: 100%; background: var(--primary-color); border-radius: 100px; transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1); }
    .cpc-progress-fill.bg-gradient { background: linear-gradient(90deg, var(--primary-color), var(--primary-gradient-end)); }

    /* Zero-Inline Enhancements */
    #bgCv { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; }
    .rw-hero-badge i { width: 14px; height: 14px; }
    .sec-title i { width: 14px; height: 14px; }
    .ob-sep.ml-auto { margin-left: auto; }
    .cd-value i, .cd-item i { width: 16px; height: 16px; color: var(--text-muted); }
    .cd-header i.cd-chevron { width: 14px; height: 14px; }
    .as-title i { width: 12px; height: 12px; }
    .as-header-count { font-family: 'Space Mono', monospace; font-size: 11px; color: var(--text-muted); }
    .lc-copy-icon i { width: 10px; height: 10px; }
    .act-btn i { width: 14px; height: 14px; }
    .fs-title i { width: 14px; height: 14px; }
    .fs-header-count { font-family: 'Space Mono', monospace; font-size: 11px; color: var(--text-muted); }
    .hs-title i { width: 14px; height: 14px; }
    .act-btn.btn-danger-outline { padding: 4px 10px; font-size: 12px; color: #ef4444; border-color: rgba(239,68,68,0.2); }
    .act-btn.btn-danger-outline i { width: 12px; height: 12px; }
    .h-empty i { width: 18px; height: 18px; }
    .cp-title i { color: var(--primary-color); }
    .info-div-t { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 800; color: var(--text-main); margin-bottom: 20px; }
    .info-div-t i { width: 16px; height: 16px; color: var(--primary-color); }