:root{
    /* Dark — neutral pro palette, green as accent only */
    --bg:#09090B;
    --surface:#111113;
    --elevated:#1A1A1D;
    --accent:#00D24F;
    --accent-hover:#1AE56A;
    --accent-soft:rgba(0,210,79,0.10);
    --accent-text:#00D24F; /* green for TEXT — on dark this passes AA (9.8:1) */
    --success:#00D24F;
    --warning:#F59E0B;
    --error:#EF4444;
    --text:#FAFAFA;
    --text-secondary:#A1A1AA;
    --muted:#71717A;
    --border:#27272A;
    --border-strong:#3F3F46;
    --shadow:0 8px 24px rgba(0,0,0,0.4);
    --shadow-sm:0 1px 2px rgba(0,0,0,0.3);
    --gradient-text:linear-gradient(180deg,#FAFAFA,#CFCFD6);
    --dropzone-bg:rgba(255,255,255,.02);
    --mono:'SF Mono','JetBrains Mono',Menlo,Consolas,'IBM Plex Sans Thai',monospace;
}

[data-theme="light"]{
    --bg:#FAFAFA;
    --surface:#FFFFFF;
    --elevated:#F4F4F5;
    --accent:#00A33D;
    --accent-hover:#008C33;
    --accent-soft:rgba(0,163,61,0.08);
    --accent-text:#00742C; /* darker green for TEXT on light bg → ~4.8:1 (WCAG AA) */
    --success:#00A33D;
    --warning:#D97706;
    --error:#DC2626;
    --text:#09090B;
    --text-secondary:#52525B;
    --muted:#71717A;
    --border:#E4E4E7;
    --border-strong:#D4D4D8;
    --shadow:0 8px 24px rgba(0,0,0,0.06);
    --shadow-sm:0 1px 2px rgba(0,0,0,0.04);
    --gradient-text:linear-gradient(180deg,#09090B,#3A3A42);
    --dropzone-bg:rgba(0,0,0,.02);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter','IBM Plex Sans Thai',-apple-system,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.6;-webkit-font-smoothing:antialiased;transition:background-color 0.3s,color 0.3s}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* Navbar */
.navbar{position:fixed;top:0;left:0;right:0;z-index:100;background:var(--bg);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:background-color 0.3s,border-color 0.3s}
.navbar-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--text)}
.brand-icon{width:28px;height:28px;background:var(--text);color:var(--bg);border-radius:6px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;letter-spacing:-0.04em;font-family:var(--mono);position:relative}
.brand-icon::before{content:'S'}
.brand-icon::after{content:'';position:absolute;width:5px;height:5px;background:var(--accent);border-radius:50%;bottom:-1px;right:-1px;border:1.5px solid var(--bg);box-shadow:0 0 4px var(--accent-soft)}
.brand-text{font-weight:600}
.nav-links{display:flex;gap:8px;align-items:center}
.nav-link{color:var(--muted);text-decoration:none;font-size:.875rem;font-weight:500;padding:8px 16px;border-radius:8px;transition:all .2s}
.nav-link:hover,.nav-link.active{color:var(--text);background:var(--surface)}

/* Theme Toggle */
.theme-toggle{
    width:40px;
    height:40px;
    border-radius:10px;
    border:1px solid var(--border);
    background:var(--surface);
    color:var(--text);
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:center;
    transition:all .2s;
    margin-left:8px;
}
.theme-toggle:hover{background:var(--elevated);border-color:var(--accent)}
/* Language toggle — matches the theme toggle, sits beside it (globe + 2-letter code) */
.lang-toggle{height:40px;padding:0 11px;border-radius:10px;border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;display:inline-flex;align-items:center;gap:6px;justify-content:center;transition:all .2s;margin-left:8px}
.lang-toggle:hover{background:var(--elevated);border-color:var(--accent)}
.lang-toggle svg{width:17px;height:17px;opacity:.85}
.lang-toggle .lang-code{font-family:var(--mono);font-weight:700;font-size:.8125rem;letter-spacing:.02em}
@media(max-width:420px){.lang-toggle{padding:0 9px;gap:5px}.lang-toggle svg{width:16px;height:16px}}

/* Clear All — quieter ghost style (clearing a selection isn't destructive) */
#clearAllBtn{background:transparent;color:var(--text-secondary);border:1px solid var(--border)}
#clearAllBtn:hover{background:var(--surface);border-color:var(--error);color:var(--error)}
.theme-toggle svg{width:20px;height:20px}
.theme-toggle .sun-icon{display:none}
.theme-toggle .moon-icon{display:block}
[data-theme="light"] .theme-toggle .sun-icon{display:block}
[data-theme="light"] .theme-toggle .moon-icon{display:none}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:8px;font-weight:600;text-decoration:none;transition:all .2s;border:none;cursor:pointer;font-size:.9375rem}
.btn-primary{background:var(--text);color:var(--bg);border:1px solid var(--text)}
.btn-primary:hover{background:var(--text-secondary);border-color:var(--text-secondary)}
.btn-primary:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--border)}
.btn-secondary:hover{background:var(--elevated);border-color:var(--border-strong)}
.btn-secondary:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.btn-danger{background:var(--error);color:#fff}
.btn-danger:hover{background:#DC2626}

/* Upload Zone - Enhanced */
.upload-zone{
    border:2px dashed var(--border);
    border-radius:24px;
    padding:80px 32px;
    text-align:center;
    cursor:pointer;
    transition:all .3s ease;
    background:var(--surface);
    position:relative;
    overflow:hidden;
}
.upload-zone::before{
    content:'';
    position:absolute;
    inset:0;
    background:var(--dropzone-bg);
    opacity:0;
    transition:opacity .3s;
}
.upload-zone:hover{
    border-color:var(--border-strong);
    background:var(--elevated);
}
.upload-zone:hover::before{opacity:1}
.upload-zone.dragover{
    border-color:var(--accent);
    background:var(--accent-soft);
}
.upload-zone.dragover .upload-icon{
    transform:translateY(-8px) scale(1.1);
    color:var(--accent);
}
.upload-zone-content{position:relative;z-index:1}
.upload-icon{
    width:80px;
    height:80px;
    margin:0 auto 24px;
    color:var(--muted);
    transition:all .3s ease;
}
.upload-icon-img{
    width:160px;
    height:160px;
    object-fit:contain;
    margin:0 auto 16px;
    display:block;
    transition:transform .3s ease;
    filter:drop-shadow(0 8px 16px rgba(0,0,0,.08));
}
.upload-zone:hover .upload-icon-img{transform:translateY(-4px) scale(1.03)}
.upload-zone.dragover .upload-icon-img{transform:translateY(-8px) scale(1.08)}
.upload-title{font-size:1.25rem;font-weight:600;margin-bottom:8px}
.upload-subtitle{color:var(--muted);font-size:1rem}
.upload-input{display:none}
.upload-hint{
    margin-top:16px;
    font-size:.875rem;
    color:var(--text-secondary);
    display:flex;
    align-items:center;
    justify-content:center;
    gap:8px;
}
.upload-badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:4px 10px;
    background:var(--accent-soft);
    color:var(--accent);
    border-radius:9999px;
    font-size:.75rem;
    font-weight:500;
}

/* Batch Files List */
.batch-files{
    margin-top:24px;
    display:none;
}
.batch-files.active{display:block}
.batch-header{
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:16px;
    padding-bottom:12px;
    border-bottom:1px solid var(--border);
}
.batch-title{font-weight:600;font-size:1rem}
.batch-count{color:var(--muted);font-size:.875rem}
.batch-list{max-height:300px;overflow-y:auto;display:flex;flex-direction:column;gap:14px;padding:2px}
.batch-item{
    display:flex;
    align-items:center;
    gap:12px;
    padding:14px;
    background:var(--bg);
    border:1px solid var(--border);
    border-radius:12px;
    transition:all .2s;
}
.batch-item:hover{border-color:var(--elevated)}
.batch-item.processing{border-color:var(--accent);background:var(--accent-soft)}
.batch-item.completed{border-color:var(--success);background:rgba(16,185,129,0.05)}
.batch-item.error{border-color:var(--error);background:rgba(239,68,68,0.05)}
.batch-thumb{
    width:48px;
    height:48px;
    border-radius:8px;
    object-fit:cover;
    background:var(--surface);
}
.batch-info{flex:1;min-width:0}
.batch-name{font-weight:500;font-size:.875rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.batch-meta{color:var(--muted);font-size:.75rem;margin-top:2px}
.batch-status{width:24px;height:24px;display:flex;align-items:center;justify-content:center}
.batch-status .spinner{
    width:16px;
    height:16px;
    border:2px solid var(--border);
    border-top-color:var(--accent);
    border-radius:50%;
    animation:spin 1s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.batch-status .check{color:var(--success);font-size:1.25rem}
.batch-status .error{color:var(--error);font-size:1.25rem}
.batch-remove{
    width:28px;
    height:28px;
    border-radius:6px;
    border:none;
    background:transparent;
    color:var(--muted);
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:center;
    transition:all .2s;
}
.batch-remove:hover{background:var(--elevated);color:var(--error)}

/* Progress Indicator */
.progress-container{
    margin-top:24px;
    margin-bottom:24px;
    padding:20px;
    background:var(--bg);
    border:1px solid var(--border);
    border-radius:16px;
    display:none;
}
.progress-container.active{display:block}
.progress-header{
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:12px;
}
.progress-title{font-weight:500;font-size:.9375rem}
.progress-percent{color:var(--accent);font-weight:600}
.progress-bar{
    height:8px;
    background:var(--elevated);
    border-radius:9999px;
    overflow:hidden;
}
.progress-fill{
    height:100%;
    background:linear-gradient(90deg,var(--accent),var(--accent-hover));
    border-radius:9999px;
    transition:width .3s ease;
    position:relative;
}
.progress-fill::after{
    content:'';
    position:absolute;
    inset:0;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,0.3),transparent);
    animation:shimmer 1.5s infinite;
}
@keyframes shimmer{
    0%{transform:translateX(-100%)}
    100%{transform:translateX(100%)}
}
.progress-stats{
    display:flex;
    justify-content:space-between;
    margin-top:12px;
    font-size:.875rem;
    color:var(--muted);
}

/* Preview Area */
.preview-area{margin-top:32px;padding:32px;background:var(--surface);border-radius:16px;border:1px solid var(--border);display:none}
.preview-area.active{display:block;animation:fadeIn .3s}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.preview-header{
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:16px;
}
.preview-title{font-weight:600}
.preview-dimensions{color:var(--muted);font-size:.875rem}

/* Before/After Comparison */
.comparison-container{
    position:relative;
    width:100%;
    max-width:100%;
    margin:0 auto 24px;
    overflow:hidden;
    border-radius:12px;
    background:var(--bg);
    user-select:none;
}
.comparison-wrapper{position:relative;width:100%;aspect-ratio:var(--comparison-ratio,16/9)}
.comparison-image{
    position:absolute;
    inset:0;
    width:100%;
    height:100%;
    object-fit:contain;
}
.comparison-before{clip-path:inset(0 calc(100% - var(--split,50%)) 0 0)}
.comparison-after{z-index:1}
.comparison-labels{
    position:absolute;
    top:12px;
    left:0;
    right:0;
    display:flex;
    justify-content:space-between;
    padding:0 12px;
    pointer-events:none;
    z-index:2;
}
.comparison-label{
    padding:4px 12px;
    background:rgba(0,0,0,0.7);
    color:#fff;
    border-radius:6px;
    font-size:.75rem;
    font-weight:500;
}
.comparison-slider{
    position:absolute;
    top:0;
    bottom:0;
    left:var(--split,50%);
    width:4px;
    background:#fff;
    cursor:ew-resize;
    transform:translateX(-50%);
    z-index:3;
    box-shadow:0 0 10px rgba(0,0,0,.5);
}
.comparison-handle{
    position:absolute;
    top:50%;
    left:50%;
    transform:translate(-50%,-50%);
    width:44px;
    height:44px;
    background:#fff;
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    box-shadow:0 4px 16px rgba(0,0,0,.3);
    transition:transform .2s;
}
.comparison-slider:hover .comparison-handle{transform:translate(-50%,-50%) scale(1.1)}
.comparison-handle svg{width:20px;height:20px;color:var(--text)}

/* Controls */
.control-group{margin-bottom:24px}
.control-label{display:flex;justify-content:space-between;margin-bottom:12px;font-size:.9375rem;font-weight:500}
.control-value{color:var(--accent)}
input[type=range]{width:100%;height:8px;background:var(--elevated);border-radius:4px;outline:none;-webkit-appearance:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;background:var(--accent);border-radius:50%;cursor:pointer;transition:transform .2s}
input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.2)}
input[type=number],select{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:12px 16px;color:var(--text);font-size:.9375rem;width:100%;transition:border-color .2s}
input[type=number]:focus,select:focus{outline:none;border-color:var(--accent)}
.checkbox-wrap{display:flex;align-items:center;gap:12px;cursor:pointer}
.checkbox-wrap input{width:20px;height:20px;accent-color:var(--accent)}

/* Stats Grid */
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px}
.stat-box{text-align:center;padding:20px;background:var(--bg);border-radius:12px;border:1px solid var(--border)}
.stat-label{font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:4px}
.stat-value{font-size:1.25rem;font-weight:700}
.stat-value.success{color:var(--success)}

/* Quick Actions */
.quick-actions{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.action-btn{padding:10px 16px;background:var(--bg);border:1px solid var(--border);border-radius:8px;color:var(--text-secondary);font-size:.875rem;cursor:pointer;transition:all .2s}
.action-btn:hover{background:var(--elevated);color:var(--text)}
.action-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}

/* Footer */
/* Footer — Matrix-themed structured grid */
.footer{padding:56px 0 24px;border-top:1px solid var(--border);margin-top:80px;background:var(--surface);transition:border-color 0.3s,background-color 0.3s;position:relative}
.footer::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--accent),transparent);opacity:.3}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:48px;padding-bottom:32px;border-bottom:1px solid var(--border)}
.footer-col{display:flex;flex-direction:column;gap:10px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:4px}
.footer-brand-name{font-weight:600;font-size:1rem;color:var(--text)}
.footer-tagline{color:var(--text-secondary);font-size:.875rem;line-height:1.7;font-family:var(--mono);max-width:340px}
.footer-prompt{color:var(--muted);font-weight:500;margin-right:4px}
.footer-heading{font-size:.6875rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--text-secondary);margin-bottom:10px;font-family:var(--mono)}
.footer-link{color:var(--muted);text-decoration:none;font-size:.875rem;transition:color .2s,transform .2s;display:inline-block;width:fit-content}
.footer-link:hover{color:var(--accent);transform:translateX(2px)}
.footer-mini{color:var(--muted);font-size:.75rem;line-height:1.7;font-family:var(--mono)}
.footer-mini-link{color:var(--accent);text-decoration:none;border-bottom:1px dashed transparent;transition:border-color .2s}
.footer-mini-link:hover{border-bottom-color:var(--accent)}
.footer-host-col .zx-credit{padding:0;border:none;margin:0;align-items:flex-start}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;padding-top:24px;color:var(--muted);font-size:.75rem;font-family:var(--mono)}
.footer-prompt-line{color:var(--text-secondary)}
@media(max-width:768px){
    .footer-grid{grid-template-columns:1fr;gap:32px}
    .footer-bottom{flex-direction:column;align-items:flex-start;text-align:left}
}

/* Toast */
.toast{position:fixed;bottom:24px;right:24px;background:var(--surface);border:1px solid var(--border);padding:12px 20px 12px 12px;border-radius:14px;display:flex;align-items:center;gap:10px;transform:translateY(100px);opacity:0;transition:all .3s;z-index:1000;box-shadow:var(--shadow)}
.toast.show{transform:translateY(0);opacity:1}
.toast.success{border-color:var(--accent)}
.toast.error{border-color:var(--error)}
.toast-mascot{width:44px;height:44px;object-fit:contain;flex-shrink:0;display:block}

/* Page Header */
.page-header{padding:108px 0 36px;text-align:center}
.page-title{font-size:3rem;font-weight:700;margin-bottom:16px;background:var(--gradient-text);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.page-subtitle{color:var(--text-secondary);font-size:1.125rem;max-width:600px;margin:0 auto}

/* Tool Layout */
.tool-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.tool-panel{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:32px;transition:background-color 0.3s,border-color 0.3s}
.tool-preview{position:sticky;top:80px}

/* Home Page Specific */
.hero-home{padding:116px 0 48px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:center}
.hero-text{text-align:left}
.hero-mascot{display:flex;justify-content:center;align-items:center}
.hero-mascot img{width:100%;max-width:380px;height:auto;display:block;filter:drop-shadow(0 12px 24px rgba(0,0,0,.15))}
[data-theme="light"] .hero-mascot img{filter:drop-shadow(0 12px 24px rgba(0,0,0,.08))}
@media(max-width:968px){
    /* Compact mobile hero — mascot no longer eats the fold; title+CTA land high */
    .hero-home{padding:84px 0 44px}
    .hero-grid{grid-template-columns:1fr;gap:20px;text-align:center}
    .hero-text{text-align:center}
    .hero-mascot{order:-1}
    .hero-mascot img{max-width:168px}
    .hero-badge{margin-bottom:18px}
}
.hero-badge{display:inline-flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--border);color:var(--text-secondary);padding:8px 16px;border-radius:9999px;font-size:.8125rem;font-weight:500;margin-bottom:32px;letter-spacing:-0.005em}
/* line-height 1.22 + padding-bottom give Thai stacked vowels/tone-marks the head-room
   they need so background-clip:text doesn't crop the lower vowel (e.g. สระอู) */
.hero-title{font-size:clamp(2.25rem,4.4vw,3.4rem);font-weight:700;margin-bottom:18px;letter-spacing:-0.035em;line-height:1.22;padding-bottom:.08em;background:var(--gradient-text);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-subtitle{color:var(--text-secondary);font-size:1.25rem;max-width:600px;margin:0 auto 40px}
.features{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:0}
/* Section intro above the tools grid — gives the grid context + a focal point */
.tools-head{text-align:center;max-width:660px;margin:0 auto 40px}
.tools-eyebrow{display:inline-block;font-size:.8125rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-text);margin-bottom:14px}
.tools-title{font-size:clamp(1.65rem,3vw,2.2rem);font-weight:700;letter-spacing:-0.02em;line-height:1.28;margin-bottom:10px}
.tools-sub{color:var(--text-secondary);font-size:1.0625rem;line-height:1.6;margin:0}
.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:28px;text-decoration:none;color:var(--text);transition:border-color .2s,background-color .2s;display:flex;flex-direction:column;position:relative;overflow:hidden}
.feature-card::after{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--border-strong),transparent);opacity:0;transition:opacity .3s}
.feature-card:hover{border-color:var(--border-strong);background:var(--elevated)}
.feature-card:hover::after{opacity:1}
.feature-icon{width:50px;height:50px;background:var(--elevated);border:1px solid var(--border);border-radius:13px;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);margin-bottom:16px;transition:background-color .2s,color .2s,border-color .2s,transform .22s cubic-bezier(.22,.61,.36,1)}
.feature-icon svg{width:25px;height:25px;stroke-width:1.5}
/* Icon lights up brand-green on hover — adds delight + reinforces the accent */
.feature-card:hover .feature-icon{background:var(--accent);border-color:var(--accent);color:#04140a;transform:scale(1.06) rotate(-3deg)}
.feature-title{font-size:1.0625rem;font-weight:600;margin-bottom:6px;letter-spacing:-0.01em}
.feature-desc{color:var(--text-secondary);font-size:.875rem;line-height:1.6;margin-bottom:16px;flex:1}
.feature-arrow{font-size:.8125rem;color:var(--muted);font-weight:500;transition:color .2s,transform .2s;letter-spacing:-0.005em}
.feature-card:hover .feature-arrow{color:var(--accent-text)}
.feature-arrow{color:var(--accent-text);font-weight:600;display:flex;align-items:center;gap:8px}
/* Big faint icon watermark — gives every card its own character so the grid
   stops reading like a flat table. Cloned from the icon by app.js. */
.feature-watermark{position:absolute;right:20px;bottom:18px;width:76px;height:76px;color:var(--text);opacity:.05;pointer-events:none;z-index:0;transform-origin:center;transition:opacity .25s,color .25s,transform .25s cubic-bezier(.22,.61,.36,1)}
.feature-watermark svg{width:100%;height:100%;stroke-width:1}
.feature-card:hover .feature-watermark{opacity:.11;color:var(--accent);transform:scale(1.07)}
.feature-card > .feature-icon,.feature-card > .feature-title,.feature-card > .feature-desc,.feature-card > .feature-arrow{position:relative;z-index:1}
.support-home{padding:100px 0;text-align:center}
.support-card{background:var(--surface);border:1px solid var(--border);border-radius:24px;padding:48px;max-width:800px;margin:0 auto;transition:background-color 0.3s,border-color 0.3s}
.support-title{font-size:2rem;font-weight:700;margin-bottom:16px}
.support-text{color:var(--text-secondary);max-width:480px;margin:0 auto 32px}
.wallets{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:24px}
.wallet{background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:20px;text-align:left;cursor:pointer;transition:all .2s}
.wallet:hover{border-color:var(--accent);background:var(--accent-soft)}
.wallet.copied{border-color:var(--success);background:rgba(16,185,129,.05)}
.wallet-name{color:var(--accent);font-weight:600;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.wallet-addr{font-family:monospace;font-size:.75rem;color:var(--muted);word-break:break-all}

@media(max-width:968px){
    .tool-layout{grid-template-columns:1fr}
    .tool-preview{position:static}
    .page-title{font-size:2rem}
    .stats-grid{grid-template-columns:1fr}
    .hero-title{font-size:2.5rem}
    .features{grid-template-columns:1fr}
    .wallets{grid-template-columns:1fr}
}
@media(max-width:900px){
    .nav-links{display:none}
}
@media(max-width:640px){
    .page-header{padding:100px 0 40px}
}

/* ZenityX credit block */
/* ZenityX logo block (inside footer) */
.zx-credit{display:flex;flex-direction:column;align-items:flex-start;gap:8px;text-decoration:none;transition:opacity .2s,filter .2s}
.zx-credit:hover{opacity:.85;filter:drop-shadow(0 0 8px rgba(0,255,65,.25))}
.zx-credit-logo{height:48px;width:auto;display:block}
.zx-credit-logo.light{display:none}
[data-theme="light"] .zx-credit-logo.dark{display:none}
[data-theme="light"] .zx-credit-logo.light{display:block}

/* Hamburger menu (mobile) */
.hamburger{display:none;background:transparent;border:1px solid var(--border);border-radius:8px;width:40px;height:40px;color:var(--text);cursor:pointer;align-items:center;justify-content:center;margin-left:8px;padding:0;transition:background .2s,border-color .2s}
.hamburger:hover{background:var(--surface)}
.hamburger svg{width:20px;height:20px}
@media(max-width:900px){
    .hamburger{display:inline-flex}
    .navbar .nav-links{display:none;position:absolute;top:64px;right:16px;left:16px;background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:8px;flex-direction:column;gap:4px;box-shadow:0 12px 32px rgba(0,0,0,0.5);z-index:99}
    [data-theme="light"] .navbar .nav-links{box-shadow:0 12px 32px rgba(0,0,0,0.12)}
    .navbar .nav-links.open{display:flex !important}
    .nav-link{padding:12px 16px;border-radius:8px;font-size:1rem}
    .nav-link.active{background:var(--surface)}
}

/* Mobile menu — full slide-down sheet (replaces the old text dropdown + emoji bar) */
.mmenu{position:fixed;inset:0;z-index:95;background:rgba(8,9,12,.55);backdrop-filter:blur(3px);opacity:0;pointer-events:none;transition:opacity .22s ease}
[data-theme="light"] .mmenu{background:rgba(20,30,40,.32)}
.mmenu.open{opacity:1;pointer-events:auto}
.mmenu-panel{position:absolute;top:72px;left:12px;right:12px;max-height:calc(100vh - 88px);overflow-y:auto;-webkit-overflow-scrolling:touch;background:var(--bg);border:1px solid var(--border);border-radius:18px;box-shadow:0 24px 60px rgba(0,0,0,.5);padding:8px;transform:translateY(-14px);opacity:0;transition:transform .28s cubic-bezier(.34,1.4,.64,1),opacity .2s}
[data-theme="light"] .mmenu-panel{box-shadow:0 24px 60px rgba(20,30,40,.18)}
.mmenu.open .mmenu-panel{transform:translateY(0);opacity:1}
.mmenu-head{display:flex;align-items:center;justify-content:space-between;padding:12px 10px 14px 14px}
.mmenu-title{font-size:.75rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-family:var(--mono)}
.mmenu-close{width:34px;height:34px;border-radius:9px;border:1px solid var(--border);background:transparent;color:var(--text);display:flex;align-items:center;justify-content:center;cursor:pointer;padding:0}
.mmenu-close svg{width:18px;height:18px}
.mmenu-close:active{background:var(--surface)}
.mmenu-list{display:flex;flex-direction:column;gap:2px}
.mmenu-item{display:flex;align-items:center;gap:14px;padding:11px 12px;border-radius:13px;text-decoration:none;color:var(--text);transition:background .15s}
.mmenu-item:active{background:var(--surface)}
.mmenu-item.active{background:var(--accent-soft)}
.mmenu-ic{width:42px;height:42px;flex-shrink:0;border-radius:12px;background:var(--surface);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--text-secondary)}
.mmenu-item.active .mmenu-ic{border-color:var(--accent);color:var(--accent);background:var(--bg)}
.mmenu-ic svg{width:21px;height:21px}
.mmenu-tx{flex:1;display:flex;flex-direction:column;line-height:1.25;min-width:0}
.mmenu-tx b{font-size:1rem;font-weight:600}
.mmenu-tx small{font-size:.75rem;color:var(--muted);margin-top:2px}
.mmenu-item.active .mmenu-tx b{color:var(--accent)}
.mmenu-ch{color:var(--muted);display:flex;flex-shrink:0}
.mmenu-ch svg{width:18px;height:18px}
.mmenu-foot{display:flex;align-items:center;gap:9px;padding:13px 14px 8px;margin-top:4px;border-top:1px solid var(--border);font-size:.75rem;color:var(--muted);font-family:var(--mono)}
.mmenu-foot-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px var(--accent-soft);flex-shrink:0}
body.mmenu-lock{overflow:hidden}

/* PWA Install button — intentionally hidden across all pages
   See decision log: button visibility is inherently inconsistent on multi-page PWA
   because beforeinstallprompt fires once per session. Users install via browser
   address-bar icon (desktop) or Share menu (mobile). */
.pwa-install-btn,
#pwa-install-btn {
    display: none !important;
}

/* Mascot animations */
@keyframes mascot-pop{0%{transform:scale(0) rotate(-15deg);opacity:0}60%{transform:scale(1.1) rotate(5deg);opacity:1}100%{transform:scale(1) rotate(0)}}
@keyframes mascot-spin-idle{0%,100%{transform:rotate(-2deg)}50%{transform:rotate(2deg)}}
@keyframes mascot-swap{0%{transform:scale(1) rotate(0)}40%{transform:scale(0.85) rotate(-8deg);opacity:0.6}100%{transform:scale(1) rotate(0);opacity:1}}
.hero-mascot{cursor:pointer;user-select:none}
.hero-mascot img{transition:transform .25s ease, filter .25s ease}
.hero-mascot:hover img{transform:scale(1.04) translateY(-6px)}
.hero-mascot:active img{transform:scale(0.98)}
.hero-mascot.swapping img{animation:mascot-swap .45s cubic-bezier(.34,1.4,.64,1)}
.hero-mascot{position:relative}
.toast.show .toast-mascot{animation:mascot-pop .4s cubic-bezier(.34,1.56,.64,1)}

/* Processing indicator (working mascot popup) */
.processing-indicator{position:fixed;bottom:24px;left:24px;background:var(--surface);border:1px solid var(--border);padding:12px 20px 12px 12px;border-radius:14px;display:flex;align-items:center;gap:12px;box-shadow:var(--shadow);z-index:1000;transform:translateY(120%);opacity:0;transition:all .3s ease;pointer-events:none}
.processing-indicator.active{transform:translateY(0);opacity:1}
.processing-indicator img{width:48px;height:48px;object-fit:contain;animation:mascot-spin-idle 1.5s ease-in-out infinite}
.processing-indicator-text{font-size:.875rem;font-weight:500;color:var(--text);font-family:var(--mono)}
.processing-indicator-text::after{content:'';display:inline-block;width:1ch;animation:dots 1.4s steps(4,end) infinite}
@keyframes dots{0%,20%{content:''}40%{content:'.'}60%{content:'..'}80%,100%{content:'...'}}
@media(max-width:640px){
    .processing-indicator{bottom:90px;left:16px;right:16px;justify-content:center}
}

/* Tool page header — action mascot beside title */
.page-header-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:32px;align-items:center}
.page-header-text{text-align:left}
.page-header-text .page-subtitle{margin:0;max-width:none}
.page-header-mascot{display:flex;justify-content:center;align-items:center}
.page-header-mascot img{width:100%;max-width:200px;height:auto;display:block;filter:drop-shadow(0 8px 16px rgba(0,0,0,.10));transition:transform .3s ease}
.page-header-mascot:hover img{transform:scale(1.05) translateY(-4px)}
[data-theme="light"] .page-header-mascot img{filter:drop-shadow(0 8px 16px rgba(0,0,0,.06))}
@media(max-width:768px){
    .page-header-grid{grid-template-columns:1fr;gap:16px;text-align:center}
    .page-header-text{text-align:center}
    .page-header-mascot{order:-1}
    .page-header-mascot img{max-width:140px}
}

/* Compress "No gain" state — when source already well-optimized */
.stat-value.warning{color:var(--warning)}
.stat-value.error{color:var(--error)}

/* PWA install banner — subtle, dismissible (Phase 2) */
.pwa-banner{position:fixed;bottom:16px;left:50%;transform:translate(-50%,calc(100% + 32px));background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:12px 14px 12px 20px;display:flex;align-items:center;gap:12px;box-shadow:var(--shadow);z-index:90;font-size:.875rem;transition:transform .3s cubic-bezier(.34,1.4,.64,1);max-width:calc(100vw - 32px)}
.pwa-banner.show{transform:translate(-50%,0)}
.pwa-banner-text{color:var(--text);font-weight:500}
.pwa-banner-install{background:var(--text);color:var(--bg);border:none;border-radius:8px;padding:8px 14px;font-weight:600;font-size:.8125rem;cursor:pointer;transition:background .2s}
.pwa-banner-install:hover{background:var(--text-secondary)}
.pwa-banner-close{background:transparent;border:none;color:var(--muted);width:28px;height:28px;border-radius:6px;cursor:pointer;font-size:.875rem;display:flex;align-items:center;justify-content:center;transition:background .2s,color .2s}
.pwa-banner-close:hover{background:var(--elevated);color:var(--text)}
@media(max-width:640px){.pwa-banner{left:16px;right:16px;transform:translateY(120%);flex-wrap:wrap}.pwa-banner.show{transform:translateY(0)}.pwa-banner-text{flex:1;min-width:0}}

/* Drag-to-reorder states */
.batch-item{cursor:grab}
.batch-item:active{cursor:grabbing}
.batch-item.dragging{opacity:.4}
.batch-item.drop-target{border-color:var(--accent);background:var(--accent-soft);transform:scale(1.01)}

/* Settings panel collapsible */
.settings-panel{margin-top:16px;border:1px solid var(--border);border-radius:12px;background:var(--bg);overflow:hidden}
.settings-toggle{width:100%;padding:12px 16px;background:transparent;border:none;color:var(--text);font-size:.875rem;font-weight:500;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .2s}
.settings-toggle:hover{background:var(--surface)}
.settings-toggle svg{width:14px;height:14px;transition:transform .2s}
.settings-panel.open .settings-toggle svg{transform:rotate(180deg)}
.settings-body{padding:0 16px;max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease}
.settings-panel.open .settings-body{max-height:500px;padding:8px 16px 16px}
.settings-row{display:flex;flex-direction:column;gap:6px;margin-top:12px}
.settings-row label{font-size:.75rem;font-weight:500;color:var(--text-secondary);font-family:var(--mono);text-transform:uppercase;letter-spacing:.04em}
.settings-row input[type="text"]{background:var(--surface);border:1px solid var(--border);color:var(--text);padding:8px 12px;border-radius:8px;font-size:.875rem;font-family:var(--mono)}
.settings-row .hint{font-size:.6875rem;color:var(--muted);margin-top:2px}
.settings-row .checkbox{display:flex;align-items:center;gap:8px;font-size:.875rem;color:var(--text);text-transform:none;letter-spacing:0;cursor:pointer;font-family:'Inter',sans-serif}
.settings-row .checkbox input{accent-color:var(--accent);width:16px;height:16px;cursor:pointer}

/* Cancel button inside processing indicator */
.processing-cancel{background:var(--bg);border:1px solid var(--border);color:var(--text);font-size:.6875rem;font-weight:600;padding:4px 10px;border-radius:6px;cursor:pointer;margin-left:8px;transition:background .2s,border-color .2s;font-family:var(--mono);letter-spacing:.05em}
.processing-cancel:hover{background:var(--error);border-color:var(--error);color:#fff}

/* ============================================================
   Desktop UI polish (audit v2 → 92+)
   ============================================================ */

/* Single-image tools (BG Remove, Crop): rein in the oversized full-width drop zone */
.container > .upload-zone{max-width:720px;margin-left:auto;margin-right:auto}

/* Collapse the drop zone once files are selected — all widths (matches the
   "Add more images" label app.js sets; previously mobile-only → fixes the mismatch) */
.upload-zone.has-files{padding:18px 20px}
.upload-zone.has-files .upload-icon-img{display:none}
.upload-zone.has-files .upload-subtitle,
.upload-zone.has-files .upload-hint{display:none}
.upload-zone.has-files .upload-title{font-size:.9375rem;margin:0;opacity:.9}

/* Calmer empty preview slot instead of a pure-black void before a result */
.comparison-container{background:var(--elevated)}

/* Accessibility — visible keyboard focus across all interactive elements */
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,
[tabindex]:focus-visible,.feature-card:focus-visible,.nav-link:focus-visible,
.action-btn:focus-visible,.qr-tab:focus-visible,.qr-seg-btn:focus-visible,
.mmenu-item:focus-visible,.theme-toggle:focus-visible,.lang-toggle:focus-visible,
.hamburger:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:8px}

/* Respect the user's reduced-motion preference */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* ============================================================
   Premium polish (v3 → 95+): depth · micro-interactions · motion
   ============================================================ */

/* Card & panel depth */
.feature-card{box-shadow:0 1px 2px rgba(0,0,0,.18);transition:border-color .2s,background-color .2s,transform .22s cubic-bezier(.22,.61,.36,1),box-shadow .22s}
.feature-card::after{content:'';position:absolute;inset:0;border-radius:inherit;background:radial-gradient(120% 80% at 50% -10%,rgba(255,255,255,.05),transparent 60%);opacity:0;transition:opacity .25s;pointer-events:none}
.feature-card:hover{border-color:var(--border-strong);transform:translateY(-3px);box-shadow:0 18px 40px rgba(0,0,0,.38)}
[data-theme="light"] .feature-card:hover{box-shadow:0 18px 40px rgba(20,30,40,.10)}
.feature-card:hover::after{opacity:1}
.feature-arrow{transition:transform .2s ease,color .2s}
.feature-card:hover .feature-arrow{transform:translateX(5px)}
.tool-panel{box-shadow:0 1px 2px rgba(0,0,0,.16)}

/* Button micro-interactions */
.btn-primary,.btn-secondary{transition:background .2s,border-color .2s,color .2s,transform .12s ease}
.btn-primary:hover,.btn-secondary:hover{transform:translateY(-1px)}
.btn-primary:active,.btn-secondary:active{transform:translateY(0) scale(.99)}

/* Progress bar shimmer while processing */
.progress-fill{position:relative;overflow:hidden}
.progress-fill::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);transform:translateX(-100%);animation:progShimmer 1.25s infinite}
@keyframes progShimmer{100%{transform:translateX(100%)}}

/* Result reveal */
.stats-grid,.preview-area.active{animation:revealUp .42s cubic-bezier(.22,.61,.36,1)}
@keyframes revealUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* Scroll reveal (class added by app.js only — no-JS keeps content visible) */
.reveal-init{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s cubic-bezier(.22,.61,.36,1)}
.reveal-in{opacity:1;transform:none}

/* ============================================================
   Review-fix v4 (independent QA blockers → push to 95)
   ============================================================ */

/* Spacing: breathing room after the full-width "Clear All" on every batch tool */
#clearAllBtn{margin-bottom:24px}

/* QR download buttons: a clearly-disabled look (was muddy half-opacity white) */
#downloadPng:disabled,#downloadSvg:disabled{background:var(--surface);color:var(--muted);border-color:var(--border);opacity:1}

@media (min-width:969px){
  /* Roomy hero — breathing space up top, tools grid still peeks above the fold */
  .hero-home{padding:96px 0 52px}
  .hero-mascot img{max-width:288px}
  .hero-subtitle{margin-bottom:28px}
  /* 4-col on desktop → 8 tools = 2 even rows, no orphan last row, no "fat" banners */
  .features{grid-template-columns:repeat(4,1fr);gap:18px}
  .feature-card{padding:24px 22px}
  .feature-icon{margin-bottom:14px}
  .feature-watermark{width:62px;height:62px;right:18px;bottom:16px}

  /* Preview panel fills the right column instead of collapsing to a stub
     (fixes Rotate's half-finished look + balances Compress/Resize/Convert) */
  .preview-area.active{display:flex;flex-direction:column;min-height:520px}
  .preview-area .comparison-container,
  .preview-area #previewCanvas,
  .preview-area .preview-image,
  .preview-area > p{margin-top:auto;margin-bottom:auto}
  .preview-area #previewCanvas,.preview-area .preview-image{max-width:100%;height:auto;border-radius:12px;align-self:center}
}