/* =========================================================
   OnePDF — PDF Toolkit
   Design tokens
   ========================================================= */
:root{
  --paper: #FFFFFF;
  --paper-raised: #FFFFFF;
  --ink: #1F2937;
  --ink-soft: #4B5563;
  --blue: #316E99;
  --blue-deep: #245474;
  --blue-tint: #E8F1F7;
  --line: #DCE6EE;
  --line-strong: #C2D3E0;
  --grid: rgba(49, 110, 153, 0.05);

  --font-display: "Zilla Slab", Georgia, serif;
  --font-body: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-card: 0 1px 2px rgba(28,36,49,0.06), 0 8px 24px -12px rgba(28,36,49,0.18);
  --shadow-lift: 0 4px 8px rgba(28,36,49,0.08), 0 16px 32px -14px rgba(28,36,49,0.24);
  --container: 1180px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
html, body{ transition: background-color .25s ease, color .25s ease; }
body{
  margin:0;
  background:
    linear-gradient(var(--grid), var(--grid)) 0 0/100% 40px,
    linear-gradient(90deg, var(--grid), var(--grid)) 0 0/40px 100%,
    var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

/* =========================================================
   Dark theme — overrides every light token via [data-theme="dark"]
   ========================================================= */
[data-theme="dark"]{
  --paper: #0F172A;
  --paper-raised: #1B2438;
  --ink: #E6EDF7;
  --ink-soft: #9DB0C7;
  --blue: #6FA8D0;
  --blue-deep: #8FBEE0;
  --blue-tint: rgba(111, 168, 208, 0.14);
  --line: #2A3753;
  --line-strong: #3B4B6E;
  --grid: rgba(111, 168, 208, 0.04);
  --shadow-card: 0 1px 2px rgba(0,0,0,0.4), 0 8px 24px -12px rgba(0,0,0,0.5);
  --shadow-lift: 0 4px 8px rgba(0,0,0,0.4), 0 16px 32px -14px rgba(0,0,0,0.6);
}
[data-theme="dark"] .site-header{
  background: rgba(15, 23, 42, 0.85);
  border-bottom-color: var(--line);
}
[data-theme="dark"] .nav-toggle{ border-color: var(--line-strong); }
[data-theme="dark"] .nav-toggle span,
[data-theme="dark"] .nav-toggle span::before,
[data-theme="dark"] .nav-toggle span::after{ background: var(--ink); }
[data-theme="dark"] .tool-tabs,
[data-theme="dark"] .field-inline,
[data-theme="dark"] .hero-stat,
[data-theme="dark"] .dz-compact{
  background: rgba(27, 36, 56, 0.7);
}
[data-theme="dark"] .tool-tab{ background: var(--paper-raised); color: var(--ink-soft); }
[data-theme="dark"] .tool-tab:hover{ background: var(--blue-tint); color: var(--ink); }
[data-theme="dark"] .tool-tab.active{ color: #0F172A; background: linear-gradient(135deg, var(--blue), var(--blue-deep)); }
[data-theme="dark"] .tool-tab.active .ic{ color: #0F172A; }
[data-theme="dark"] .dropzone,
[data-theme="dark"] .file-chip,
[data-theme="dark"] .page-card,
[data-theme="dark"] .quality-card,
[data-theme="dark"] .result-card,
[data-theme="dark"] .info-card,
[data-theme="dark"] .form-row textarea,
[data-theme="dark"] select,
[data-theme="dark"] input[type=text],
[data-theme="dark"] input[type=email],
[data-theme="dark"] .field-inline input[type=text],
[data-theme="dark"] .field-inline input[type=number]{
  background: var(--paper-raised);
  color: var(--ink);
  border-color: var(--line-strong);
}
[data-theme="dark"] .dropzone .corner,
[data-theme="dark"] .stack-page .corner-clip{ border-color: var(--ink); opacity: .6; }
[data-theme="dark"] .stack-page{ background: var(--paper-raised); border-color: var(--line-strong); }
[data-theme="dark"] .stack-page::before{ background: var(--blue-tint); }
[data-theme="dark"] .stack-page::after{ background: var(--line); }
[data-theme="dark"] .dz-compact-icon{
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  color: #0F172A;
}
[data-theme="dark"] .btn-primary{ color: #0F172A; }
[data-theme="dark"] .btn-amber{ color: #0F172A; }
[data-theme="dark"] .btn-secondary{ background: var(--paper-raised); color: var(--ink); border-color: var(--line-strong); }
[data-theme="dark"] .btn-secondary:hover{
  background: var(--blue-tint);
  color: var(--ink);
  border-color: var(--line-strong);
  box-shadow: 0 4px 8px rgba(0,0,0,0.4), 0 16px 32px -14px rgba(0,0,0,0.6);
  transform: none;
}
[data-theme="dark"] .btn-primary:hover,
[data-theme="dark"] .btn-amber:hover{
  background: linear-gradient(135deg, #4F86A8, #1A3F5C);
  box-shadow: none;
  transform: none;
}
[data-theme="dark"] .dz-compact-clear{ color: var(--ink-soft); border-color: var(--line-strong); background: transparent; }
[data-theme="dark"] .dz-compact-clear:hover{ color: var(--ink); border-color: var(--blue); background: rgba(255,255,255,0.04); }
[data-theme="dark"] .status-msg{ background: var(--blue-tint); color: var(--ink); }
[data-theme="dark"] .progress-track{ background: var(--line); }
[data-theme="dark"] .hero-stat small,
[data-theme="dark"] .p{ color: var(--ink-soft); }
[data-theme="dark"] .tool-current{ color: var(--ink-soft); }
[data-theme="dark"] .tool-current::before{ background: var(--blue); box-shadow: 0 0 0 4px rgba(111, 168, 208, 0.18); }
[data-theme="dark"] .empty-note{ color: var(--ink-soft); }
[data-theme="dark"] .eyebrow{ color: var(--blue); }
[data-theme="dark"] .eyebrow::before{ background: var(--blue-deep); }
[data-theme="dark"] select,
[data-theme="dark"] input[type=text],
[data-theme="dark"] input[type=email]{
  background-color: var(--paper-raised);
  color: var(--ink);
}
[data-theme="dark"] .page-card.selected{ background: var(--blue-tint); border-color: var(--blue); }
[data-theme="dark"] .page-card .mini-rotate{ background: var(--paper-raised); border-color: var(--line-strong); color: var(--ink); }
[data-theme="dark"] .page-card canvas,
[data-theme="dark"] .page-card img{ background: var(--paper); border-color: var(--line); }
[data-theme="dark"] .stack-page::after{ box-shadow: 0 6% 0 var(--line), 0 12% 0 var(--line), 0 18% 0 var(--line); }
[data-theme="dark"] .ad-slot{ background: rgba(255,255,255,0.04); }

/* Dark-mode footer: keep the deeper navy background but lift the text
   to a much lighter shade so links and labels stay readable. */
[data-theme="dark"] .site-footer{
  background: #0A1322;
  color: #E6EDF7;
}
[data-theme="dark"] .site-footer h4{ color: #FFFFFF; }
[data-theme="dark"] .site-footer a{ color: #C7D5E3; }
[data-theme="dark"] .site-footer a:hover{ color: #FFFFFF; }
[data-theme="dark"] .footer-brand p,
[data-theme="dark"] .footer-bottom{ color: #A8BAD0; }
[data-theme="dark"] .footer-bottom{ border-top-color: rgba(255,255,255,0.10); }

@media (prefers-color-scheme: dark){
  html:not([data-theme="light"]){ color-scheme: dark; }
}
img{ max-width:100%; display:block; }
a{ color: var(--blue); }
h1,h2,h3,h4{ font-family: var(--font-display); font-weight: 600; color: var(--ink); margin: 0 0 .5em; line-height: 1.15; letter-spacing: -0.01em; }
p{ margin: 0 0 1em; color: var(--ink-soft); }
.container{ max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.eyebrow{
  font-family: var(--font-mono); font-size: 12.5px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--blue); display:inline-flex; align-items:center; gap:8px; margin-bottom: 14px;
}
.eyebrow::before{ content:""; width:18px; height:1px; background: var(--blue-deep); display:inline-block; }

:focus-visible{ outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 4px; }

/* =========================================================
   Header / Nav
   ========================================================= */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-wrap{ display:flex; align-items:center; justify-content:space-between; padding: 14px 24px; max-width: var(--container); margin:0 auto; }
.brand{ display:flex; align-items:center; gap:10px; text-decoration:none; color:var(--ink); font-family: var(--font-display); font-size: 21px; font-weight:700; }
.brand-mark{ width:30px; height:30px; flex-shrink:0; display:block; border-radius:4px; object-fit:cover; }

.main-nav{ display:flex; align-items:center; gap: 28px; }
.main-nav a{ position:relative; display:inline-flex; align-items:center; gap:7px; text-decoration:none; color: var(--ink-soft); font-size: 14.5px; font-weight:500; }
.main-nav a:hover{ color: var(--blue); }
.main-nav a.active{
  color: var(--blue);
  font-weight:700;
  border-bottom: 2px solid var(--blue);
  padding-bottom: 4px;
}
.nav-cta{
  background: var(--blue); color:#fff !important; padding: 9px 18px; border-radius: 999px;
  font-weight:600 !important;
}
.nav-cta:hover{ background: var(--blue-deep); }

/* Theme toggle (sun/moon), shown in the header */
.theme-toggle{
  display:inline-flex; align-items:center; justify-content:center;
  width:40px; height:40px; margin-left: 12px;
  background: transparent; color: var(--ink-soft);
  border: 1px solid var(--line-strong); border-radius: 999px;
  cursor: pointer; position: relative;
  transition: color .15s ease, border-color .15s ease, background .15s ease, transform .15s ease;
}
.theme-toggle:hover{ color: var(--blue); border-color: var(--blue); background: var(--blue-tint); }
.theme-toggle:active{ transform: scale(.94); }
.theme-toggle .ic-sun,
.theme-toggle .ic-moon{
  position:absolute; width:20px; height:20px;
  transition: opacity .25s ease, transform .35s cubic-bezier(.2,.8,.2,1);
}
.theme-toggle .ic-moon{ opacity:0; transform: rotate(-90deg) scale(.6); }
[data-theme="dark"] .theme-toggle .ic-sun{ opacity:0; transform: rotate(90deg) scale(.6); }
[data-theme="dark"] .theme-toggle .ic-moon{ opacity:1; transform: none; }

.nav-toggle{ display:none; background:none; border:1px solid var(--line-strong); border-radius:8px; padding:8px 10px; cursor:pointer; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{ display:block; width:20px; height:2px; background:var(--ink); position:relative; }
.nav-toggle span::before, .nav-toggle span::after{ content:""; position:absolute; left:0; }
.nav-toggle span::before{ top:-6px; } .nav-toggle span::after{ top:6px; }

@media (max-width: 860px){
  .main-nav{
    position:absolute; top:100%; left:0; right:0; background: var(--paper-raised);
    flex-direction:column; align-items:stretch; gap:0; border-bottom:1px solid var(--line);
    max-height:0; overflow:hidden; transition: max-height .25s ease;
  }
  .main-nav.open{ max-height:420px; }
  .main-nav a{ padding: 14px 24px; border-top:1px solid var(--line); justify-content:space-between; }
  .main-nav a.active:not(.nav-cta){ background: var(--blue-tint); }
  .nav-cta{ margin:14px 24px; text-align:center; }
  .nav-toggle{ display:inline-flex; flex-direction:column; align-items:center; justify-content:center; }
}

/* =========================================================
   Hero
   ========================================================= */
.hero{ padding: 64px 0 40px; }
.hero-grid{ display:grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items:center; }
@media (max-width: 900px){ .hero-grid{ grid-template-columns: 1fr; } }
.hero h1{ font-size: clamp(34px, 5vw, 52px); max-width: 14ch; }
.hero .lede{ font-size: 18px; max-width: 46ch; }
.hero-stats{ display:flex; gap:28px; margin-top: 28px; flex-wrap:wrap; }
.hero-stat{ font-family: var(--font-mono); }
.hero-stat b{ display:block; font-size:22px; color: var(--ink); font-family: var(--font-display); }
.hero-stat small{ color: var(--ink-soft); font-size:12.5px; letter-spacing:.04em; }

/* signature stacked-paper illustration */
.stack-illustration{
  position:relative;
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  /* Fluid height: keeps the stack visually proportional at every viewport */
  aspect-ratio: 5 / 4;
  height: auto;
  max-height: 340px;
}
.stack-page{
  position:absolute; width: 60%; height: 78%; left:50%; top:8%;
  background: var(--paper-raised); border:1.5px solid var(--line-strong); border-radius: 10px;
  box-shadow: var(--shadow-card);
  transform-origin: bottom center;
}
.stack-page::before{
  content:""; position:absolute; top:8%; left:10%; right:10%; height:3%; background: var(--blue-tint); border-radius:2px;
}
.stack-page::after{
  content:""; position:absolute; top:16%; left:10%; right:18%; height:2.5%; background: var(--line); border-radius:2px;
  box-shadow: 0 6% 0 var(--line), 0 12% 0 var(--line), 0 18% 0 var(--line);
}
.stack-page.p1{ transform: translateX(-50%) rotate(-9deg); z-index:1; }
.stack-page.p2{ transform: translateX(-50%) rotate(3deg); z-index:2; }
.stack-page.p3{ transform: translateX(-50%) rotate(-2deg); z-index:3; }
.stack-page.p3::before{ background: var(--blue); opacity:.85; }
.stack-illustration:hover .stack-page.p1{ transform: translateX(-72%) rotate(-16deg) translateY(-6px); }
.stack-illustration:hover .stack-page.p2{ transform: translateX(-28%) rotate(10deg) translateY(-2px); }
.stack-illustration:hover .stack-page.p3{ transform: translateX(-50%) rotate(-2deg) translateY(-14px); }
.stack-page{ transition: transform .35s cubic-bezier(.2,.8,.2,1); }
.corner-clip{ position:absolute; top:-10px; right:36%; width:26px; height:26px; border:2px solid var(--ink); border-bottom:none; border-right:none; transform: rotate(45deg); opacity:.5; }

/* =========================================================
   Buttons
   ========================================================= */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-family: var(--font-body); font-weight:600; font-size:15px; text-decoration:none;
  padding: 12px 22px; border-radius: 999px; border: 1.5px solid transparent; cursor:pointer;
  box-shadow: 0 1px 2px rgba(28,36,49,0.08);
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
}
.btn:active{ transform: translateY(1px); }
.btn-primary{ background: linear-gradient(135deg, var(--blue), var(--blue-deep)); color:#fff; }
.btn-primary:hover{ background: linear-gradient(135deg, var(--blue-deep), #1A3F5C); box-shadow: var(--shadow-lift); transform: translateY(-1px); }
.btn-secondary{ background: var(--paper-raised); color: var(--ink); border-color: var(--line-strong); }
.btn-secondary:hover{ border-color: var(--blue); color: var(--blue); box-shadow: var(--shadow-card); transform: translateY(-1px); }
.btn-amber{ background: linear-gradient(135deg, var(--blue), var(--blue-deep)); color:#fff; border-color: transparent; }
.btn-amber:hover{ background: linear-gradient(135deg, var(--blue-deep), #1A3F5C); color:#fff; box-shadow: var(--shadow-lift); transform: translateY(-1px); }
.btn[disabled]{ opacity:.45; cursor:not-allowed; }
.btn-block{ width:100%; }
.btn-sm{ padding: 8px 14px; font-size:13.5px; border-radius: 8px; }

/* =========================================================
   Tool hub tabs
   ========================================================= */
.tool-hub{ padding: 10px 0 90px; }
.tool-tabs{
  display:grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap:10px; overflow-x:auto;
  padding: 12px; margin: 18px 0 24px; border: 1px solid var(--line);
  border-radius: var(--radius-lg); background: rgba(255,255,255,.62); box-shadow: var(--shadow-card);
  scrollbar-width: thin;
}
.tool-current{
  grid-column: 1 / -1;
  display:flex;
  align-items:center;
  gap:8px;
  font-family: var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color: var(--blue-deep);
  padding: 2px 4px 4px;
}
.tool-current::before{
  content:"";
  width:8px;
  height:8px;
  border-radius:50%;
  background: var(--blue);
  box-shadow: 0 0 0 4px rgba(49,110,153,.16);
}
.tool-tab{
  min-width: 120px; display:flex; align-items:center; justify-content:center; gap:10px; padding: 13px 16px;
  background: var(--paper-raised); border:1px solid var(--line); border-radius: 12px; cursor:pointer;
  font-family: var(--font-body); font-weight:600; font-size:14.5px; color: var(--ink-soft);
  white-space:nowrap; box-shadow: 0 1px 1px rgba(28,36,49,0.04);
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease, border-color .15s ease;
}
.tool-tab:hover{ color: var(--ink); background: var(--blue-tint); border-color: rgba(49,110,153,.35); transform: translateY(-1px); }
.tool-tab.active{ color: #fff; border-color: transparent; background: linear-gradient(135deg, var(--blue), var(--blue-deep)); box-shadow: var(--shadow-lift); }
.tool-tab .ic{ width:18px; height:18px; flex-shrink:0; }
@media (max-width: 980px){
  .tool-tabs{ grid-template-columns: repeat(3, minmax(128px, 1fr)); }
}
@media (max-width: 560px){
  .tool-tabs{ grid-template-columns: repeat(2, minmax(132px, 1fr)); padding:10px; }
  .tool-tab{ min-width: 132px; padding: 12px 10px; font-size:13.5px; }
}

.tool-panel{ display:none; padding-top: 34px; animation: fadeUp .35s ease; }
.tool-panel.active{ display:block; }
.tool-action-bar{ margin: 24px 0 0; padding: 22px 22px 18px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--paper-raised); box-shadow: var(--shadow-card); }
.tool-action-panel{ display:none; }
.tool-action-panel.active{ display:block; }
@keyframes fadeUp{ from{ opacity:0; transform: translateY(6px);} to{ opacity:1; transform:none; } }

.tool-panel-head{ margin-bottom: 22px; max-width: 62ch; }
.tool-panel-head h2{ font-size: 26px; }

/* Drop zone — "light table" with viewfinder corners */
.dropzone{
  position:relative; border-radius: var(--radius-lg); background: var(--paper-raised);
  border: 1.5px dashed var(--line-strong); padding: 46px 24px; text-align:center; cursor:pointer;
  box-shadow: 0 1px 2px rgba(28,36,49,0.04), inset 0 0 0 1px rgba(255,255,255,.68);
  transition: border-color .15s ease, background .15s ease, box-shadow .15s ease, transform .15s ease;
}
.dropzone:hover, .dropzone.dragover{ border-color: var(--blue); background: var(--blue-tint); box-shadow: var(--shadow-card); transform: translateY(-1px); }
.dropzone input[type=file]{ position:absolute; inset:0; opacity:0; cursor:pointer; width:100%; height:100%; }
.dropzone .corner{ position:absolute; width:18px; height:18px; border: 2px solid var(--ink-soft); opacity:.4; }
.dropzone .corner.tl{ top:10px; left:10px; border-right:none; border-bottom:none; }
.dropzone .corner.tr{ top:10px; right:10px; border-left:none; border-bottom:none; }
.dropzone .corner.bl{ bottom:10px; left:10px; border-right:none; border-top:none; }
.dropzone .corner.br{ bottom:10px; right:10px; border-left:none; border-top:none; }
.dropzone .dz-icon{ width:44px; height:44px; margin: 0 auto 14px; color: var(--blue); }
.dropzone strong{ display:block; font-size:16px; margin-bottom:4px; }
.dropzone small{ color: var(--ink-soft); font-family: var(--font-mono); font-size:12.5px; }

/* Compact "Files Selected" summary that replaces the dropzone after upload */
.dz-compact{
  display:flex; align-items:center; gap:14px; margin: 0 0 16px;
  padding: 14px 16px;
  background: linear-gradient(135deg, rgba(232,241,247,.85), rgba(255,255,255,.85));
  border: 1.5px solid rgba(49,110,153,.22);
  border-radius: var(--radius-md);
  box-shadow: 0 1px 2px rgba(28,36,49,.06), 0 6px 18px -10px rgba(49,110,153,.25);
  animation: dzCompactIn .35s cubic-bezier(.2,.8,.2,1);
}
.dz-compact[hidden]{ display:none; }
@keyframes dzCompactIn{
  from{ opacity:0; transform: translateY(-6px) scale(.98); }
  to{ opacity:1; transform:none; }
}
.dz-compact-icon{
  width:38px; height:38px; flex-shrink:0;
  display:inline-flex; align-items:center; justify-content:center;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  color:#fff; border-radius:50%;
  box-shadow: 0 4px 10px -4px rgba(49,110,153,.55);
  animation: dzCompactPop .5s cubic-bezier(.2,.9,.3,1.3);
}
.dz-compact-icon svg{ width:20px; height:20px; }
@keyframes dzCompactPop{
  0%{ transform: scale(.4); opacity:0; }
  60%{ transform: scale(1.08); opacity:1; }
  100%{ transform: scale(1); }
}
.dz-compact-text{ flex:1; min-width:0; display:flex; flex-direction:column; gap:2px; }
.dz-compact-title{
  font-family: var(--font-body); font-weight:700; font-size:14.5px; color: var(--ink);
  letter-spacing: -.005em;
}
.dz-compact-sub{
  display:inline-flex; align-items:center; gap:6px; flex-wrap:wrap;
  font-family: var(--font-mono); font-size:12.5px; color: var(--ink-soft);
}
.dz-compact-sub b{ font-weight:600; color: var(--blue-deep); }
.dz-compact-dot{ color: var(--line-strong); }
.dz-compact-add{ flex-shrink:0; min-height:38px; padding: 8px 14px; }

/* Clear button in compact summary */
.dz-compact-clear{
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--ink-soft);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 12.5px;
  padding: 0 12px;
  min-height: 38px;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: color .15s ease, border-color .15s ease, background .15s ease;
  flex-shrink: 0;
}
.dz-compact-clear:hover{
  color: var(--blue-deep);
  border-color: var(--blue);
  background: rgba(255,255,255,.5);
}
.dz-compact-clear svg{ width:14px; height:14px; stroke-width:2; }

/* File chip list */
.file-list{ list-style:none; margin: 20px 0; padding:0; display:flex; flex-direction:column; gap:10px; }
.file-chip{
  display:flex; align-items:center; gap:12px; background: var(--paper-raised); border:1px solid var(--line);
  border-radius: var(--radius-md); padding: 10px 12px; box-shadow: var(--shadow-card);
}
.file-chip .thumb{ width:40px; height:52px; border:1px solid var(--line-strong); border-radius:4px; background:var(--blue-tint); flex-shrink:0; display:flex; align-items:center; justify-content:center; overflow:hidden; }
.file-chip .thumb img{ width:100%; height:100%; object-fit:cover; }
.file-chip .meta{ flex:1; min-width:0; }
.file-chip .meta .name{ font-weight:600; font-size:14px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.file-chip .meta .sub{ font-family: var(--font-mono); font-size:12px; color: var(--ink-soft); }
.file-chip .drag-handle{ cursor: grab; color: var(--line-strong); font-family:monospace; padding: 0 6px; user-select:none; }
.file-chip.dragging{ opacity:.4; }
.file-chip button.remove{
  background:none; border:none; color: var(--blue-deep); cursor:pointer; font-size: 18px; line-height:1; padding:6px;
}

/* Page thumbnail grid (split / rotate) */
.page-grid{ display:grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 14px; margin: 20px 0; }
.page-card{
  position:relative; background: var(--paper-raised); border: 1.5px solid var(--line); border-radius: var(--radius-md);
  padding: 8px; text-align:center; cursor:pointer; transition: border-color .15s ease, transform .15s ease;
}
.page-card:hover{ transform: translateY(-2px); box-shadow: var(--shadow-card); }
.page-card.selected{ border-color: var(--blue); background: var(--blue-tint); }
.page-card canvas, .page-card img{ width:100%; border-radius:4px; border:1px solid var(--line); background:#fff; }
.page-card .pg-num{ font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-soft); margin-top:6px; }
.page-card .rot-badge{ position:absolute; top:6px; right:6px; background: var(--blue); color:#fff; font-size:10px; font-family:var(--font-mono); padding:2px 5px; border-radius:4px; opacity:0; }
.page-card.rotated .rot-badge{ opacity:1; }
.page-card .check{
  position:absolute; top:6px; left:6px; width:16px; height:16px; border-radius:4px; border:1.5px solid var(--line-strong);
  background: var(--paper-raised);
}
#split-grid:not(.mode-extract) .page-card .check{
  display:none;
}
.page-card.selected .check{ background: var(--blue); border-color: var(--blue-deep); }
.page-card .mini-rotate{
  position:absolute; bottom:26px; right:6px; width:22px; height:22px; border-radius:50%; border:1px solid var(--line-strong);
  background:#fff; display:flex; align-items:center; justify-content:center; font-size:12px;
}

.toolbar-row{ display:flex; flex-wrap:wrap; gap:10px; align-items:center; margin: 16px 0; }
.field-inline{ display:flex; align-items:center; gap:8px; font-size:14px; color: var(--ink-soft); font-family: var(--font-mono); }
.field-inline input[type=text], .field-inline input[type=number]{
  font-family: var(--font-mono); border:1px solid var(--line-strong); border-radius:6px; padding:7px 9px; width:90px;
}
select, input[type=text], input[type=email]{
  font-family: var(--font-body); border: 1px solid var(--line-strong); border-radius: 8px; padding: 10px 12px; font-size:14px;
  background: var(--paper-raised); color: var(--ink);
}

.range-row{ display:flex; align-items:center; gap:14px; }
input[type=range]{ accent-color: var(--blue); flex:1; }

.quality-cards{ display:grid; grid-template-columns: repeat(auto-fit,minmax(180px,1fr)); gap:14px; margin: 18px 0; }
.quality-card{
  border: 1.5px solid var(--line); border-radius: var(--radius-md); padding:16px; cursor:pointer; background: var(--paper-raised);
}
.quality-card:hover{ border-color: var(--blue); }
.quality-card.selected{ border-color: var(--blue); background: var(--blue-tint); box-shadow: var(--shadow-card); }
.quality-card h4{ font-size:15px; margin-bottom:4px; }
.quality-card p{ font-size:13px; margin:0; }
.compress-estimate{ margin-top: 12px; font-size: 13px; line-height: 1.4; color: var(--ink-soft); }
.compress-estimate .estimate-value{ font-family: var(--font-mono); font-weight: 700; color: var(--ink); }

.progress-track{ height:8px; background: var(--line); border-radius:999px; overflow:hidden; margin:14px 0; display:none; }
.progress-track.active{ display:block; }
.progress-fill{ height:100%; width:0%; background: linear-gradient(90deg, var(--blue), var(--blue-deep)); transition: width .2s ease; }

.status-msg{ font-family: var(--font-mono); font-size:13.5px; padding: 10px 14px; border-radius: 8px; margin: 12px 0; display:none; }
.status-msg.active{ display:block; }
.status-msg.info{ background: var(--blue-tint); color: var(--blue-deep); }
.status-msg.success{ background: var(--blue-tint); color: var(--blue-deep); }
.status-msg.error{ background: var(--blue-tint); color: var(--blue-deep); }

.result-card{
  display:none; margin-top: 22px; background: var(--paper-raised); border:1px solid var(--line); border-radius: var(--radius-lg);
  padding: 22px; box-shadow: var(--shadow-card);
}
.result-card.active{ display:flex; align-items:center; justify-content:space-between; gap:20px; flex-wrap:wrap; }
.result-info{ display:flex; align-items:center; gap:14px; }
.result-info .ic{ width:36px; height:36px; color: var(--blue); flex-shrink:0; }
.result-info .r-name{ font-weight:700; }
.result-info .r-size{ font-family: var(--font-mono); font-size:12.5px; color: var(--ink-soft); }

.empty-note{ font-family: var(--font-mono); font-size: 13px; color: var(--ink-soft); text-align:center; padding: 30px 0; }

/* =========================================================
   Generic content sections (About/FAQ/Legal/Contact)
   ========================================================= */
.page-hero{ padding: 56px 0 20px; }
.page-hero h1{ font-size: clamp(30px,4.2vw,42px); max-width: 22ch; }
.content-section{ padding: 20px 0 70px; }
.prose{ max-width: 76ch; }
.seo-copy{ padding-top: 40px; }
.seo-copy p{ font-size: 15.5px; line-height: 1.65; }
.prose h2{ font-size:22px; margin-top: 40px; }
.prose h3{ font-size:17px; margin-top: 26px; }
.prose ul{ color: var(--ink-soft); padding-left: 20px; }
.prose li{ margin-bottom:6px; }
.card-grid{ display:grid; grid-template-columns: repeat(auto-fit,minmax(230px,1fr)); gap: 20px; margin: 30px 0; }
.info-card{ background: var(--paper-raised); border:1px solid var(--line); border-radius: var(--radius-lg); padding:22px; box-shadow: var(--shadow-card); }
.info-card .ic{ width:30px; height:30px; color: var(--blue); margin-bottom: 12px; }
.info-card h3{ font-size:16px; margin-bottom:6px; }
.info-card p{ font-size: 14px; margin:0; }

.faq-item{ border-bottom: 1px solid var(--line); }
.faq-q{
  width:100%; text-align:left; background:none; border:none; padding: 18px 0; cursor:pointer;
  display:flex; justify-content:space-between; align-items:center; gap: 16px; font-family: var(--font-body); font-weight:600; font-size:15.5px; color: var(--ink);
}
.faq-q .plus{ font-family: var(--font-mono); font-size:20px; color: var(--blue); transition: transform .2s ease; flex-shrink:0; }
.faq-item.open .faq-q .plus{ transform: rotate(45deg); }
.faq-a{ max-height:0; overflow:hidden; transition: max-height .25s ease; }
.faq-item.open .faq-a{ max-height: 600px; }
.faq-a-inner{ padding: 0 0 18px; color: var(--ink-soft); font-size:14.5px; max-width: 68ch; }
.faq-cat{ font-family: var(--font-mono); text-transform:uppercase; font-size:12px; letter-spacing:.1em; color: var(--blue); margin: 34px 0 4px; }

.contact-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 40px; }
@media (max-width: 800px){ .contact-grid{ grid-template-columns: 1fr; } }
.form-row{ margin-bottom: 16px; display:flex; flex-direction:column; gap:6px; }
.form-row label{ font-size:13.5px; font-weight:600; }
.form-row textarea{ font-family: var(--font-body); border:1px solid var(--line-strong); border-radius:8px; padding:10px 12px; font-size:14px; resize:vertical; min-height:120px; background: var(--paper-raised); color: var(--ink); }

/* =========================================================
   Footer
   ========================================================= */
.site-footer{ background: var(--blue-deep); color: #D9E4EA; padding: 50px 0 26px; margin-top: 40px; }
.footer-grid{ display:grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 30px; }
@media (max-width: 800px){ .footer-grid{ grid-template-columns: 1fr 1fr; } }
.site-footer h4{ color:#fff; font-size:13px; text-transform:uppercase; letter-spacing:.08em; font-family: var(--font-mono); margin-bottom:14px; }
.site-footer ul{ list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:9px; }
.site-footer a{ color:#B9CBD3; text-decoration:none; font-size:14px; }
.site-footer a:hover{ color:#fff; }
.footer-brand p{ color:#B9CBD3; font-size:14px; max-width: 34ch; }
.footer-bottom{
  border-top: 1px solid rgba(255,255,255,.12); margin-top: 36px; padding-top: 20px;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; font-size:13px; color:#93A9B2; font-family: var(--font-mono);
}

/* Privacy consent banner */
.consent-banner{
  position: fixed; left:16px; right:16px; bottom:16px; z-index: 200; max-width: 640px; margin:0 auto;
  background: var(--ink); color: #EDEAE0; border-radius: var(--radius-lg); padding: 18px 20px; box-shadow: var(--shadow-lift);
  display:none; align-items:center; gap:16px; flex-wrap:wrap;
}
.consent-banner.show{ display:flex; }
.consent-banner p{ color:#C9C4B4; font-size:13.5px; margin:0; flex:1; min-width:220px; }
.consent-banner a{ color:#fff; text-decoration:underline; }

/* Utility */
.sr-only{ position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); border:0; }

/* =========================================================
   Mobile comfort pass
   ========================================================= */
@media (max-width: 680px){
  body{
    font-size: 15.5px;
    background:
      linear-gradient(var(--grid), var(--grid)) 0 0/100% 32px,
      linear-gradient(90deg, var(--grid), var(--grid)) 0 0/32px 100%,
      var(--paper);
    overflow-x: hidden;
  }

  .container{ padding: 0 16px; }
  .nav-wrap{ padding: 12px 16px; }
  .brand{ font-size: 19px; }
  .brand-mark{ width:28px; height:28px; }
  .theme-toggle{ width:38px; height:38px; margin-left: 8px; }
  .nav-toggle{ min-width:44px; min-height:44px; }
  .main-nav a{ min-height: 48px; display:flex; align-items:center; }
  .nav-cta{ border-radius: 12px; justify-content:center; }

  .hero{ padding: 38px 0 26px; }
  .hero-grid{ gap: 24px; }
  .hero h1{ max-width: none; font-size: clamp(32px, 11vw, 42px); }
  .hero .lede{ font-size: 16px; }
  .hero .btn{ width:100%; min-height:48px; }
  .hero-stats{
    display:grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-top: 22px;
  }
  .hero-stat{
    background: rgba(255,255,255,.62);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 10px 8px;
  }
  .hero-stat b{ font-size:19px; }
  .hero-stat small{ font-size:10px; line-height:1.25; }
  .stack-illustration{
    max-width: 280px;
    max-height: 220px;
    margin: 8px auto 0;
  }
  .stack-page{ border-radius: 8px; }
  .stack-page.p1{ transform: translateX(-50%) rotate(-7deg); }
  .stack-page.p2{ transform: translateX(-50%) rotate(3deg); }
  .stack-page.p3{ transform: translateX(-50%) rotate(-2deg); }
  .corner-clip{ right:24%; top:-6px; width:20px; height:20px; }

  .tool-hub{ padding: 8px 0 54px; }
  .tool-panel{ padding-top: 24px; }
  .tool-panel-head{ margin-bottom: 16px; }
  .tool-panel-head h2{ font-size: 24px; }
  .tool-panel-head p{ font-size: 14.5px; }
  .dropzone{ padding: 34px 18px; border-radius: 14px; }
  .dropzone .dz-icon{ width:38px; height:38px; }
  .dropzone strong{ font-size:15px; }
  .dropzone small{ display:block; max-width: 26ch; margin:0 auto; line-height:1.35; }

  .tool-tabs{
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin: 14px 0 20px;
    padding: 8px;
    overflow: visible;
  }
  .tool-tab{
    min-width: 0;
    min-height: 48px;
    padding: 11px 8px;
    border-radius: 10px;
    font-size: 13px;
    white-space: normal;
    line-height: 1.2;
  }
  .tool-tab .ic{ width:17px; height:17px; }

  .toolbar-row{
    align-items: stretch;
    gap: 9px;
  }
  .toolbar-row .btn,
  .toolbar-row select,
  .toolbar-row .field-inline{
    width: 100%;
  }
  .toolbar-row .btn{ min-height: 46px; }
  .field-inline{
    align-items:flex-start;
    background: rgba(255,255,255,.62);
    border:1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    line-height:1.35;
  }
  .field-inline input[type=text],
  .field-inline input[type=number],
  select,
  input[type=text],
  input[type=email]{
    min-height: 44px;
    width: 100%;
  }
  .range-row{
    align-items: stretch;
    flex-direction: column;
    gap: 10px;
  }

  .file-list{ margin: 16px 0; }

  .dz-compact{
    gap:12px; padding: 12px 14px; margin: 0 0 14px;
    flex-wrap: wrap;
  }
  .dz-compact-icon{ width:34px; height:34px; }
  .dz-compact-icon svg{ width:18px; height:18px; }
  .dz-compact-text{ min-width: calc(100% - 50px); flex-basis: auto; }
  .dz-compact-title{ font-size:13.5px; }
  .dz-compact-sub{ font-size:12px; }
  .dz-compact-actions{
    display:flex; gap:8px; width:100%; justify-content:flex-end;
  }
  .dz-compact-add{
    width:auto; flex:1; min-height:42px; justify-content:center;
    margin-top: 2px;
  }
  .dz-compact-clear{
    min-height:42px; padding: 0 14px;
  }
  .file-chip{
    display:grid;
    grid-template-columns: auto 1fr auto;
    gap: 10px;
    padding: 12px;
  }
  .file-chip .drag-handle{
    grid-row: 1 / span 2;
    align-self:center;
    padding: 8px 4px;
  }
  .file-chip .thumb{ width:36px; height:46px; }
  .file-chip .meta{ min-width: 0; }
  .file-chip .meta .name{ font-size:13.5px; }
  .file-chip .meta .sub{ font-size:11.5px; }
  .file-chip button.remove{
    min-width:40px;
    min-height:40px;
    justify-self:end;
  }

  .page-grid{
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }
  .page-card{ padding: 7px; }
  .page-card .mini-rotate{
    width:30px;
    height:30px;
    bottom:28px;
  }

  .quality-cards{
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .quality-card{ padding: 14px; }

  .result-card{ padding: 16px; }
  .result-card.active{
    align-items: stretch;
    flex-direction: column;
  }
  .result-info{ align-items:flex-start; }
  .result-info .r-name{
    overflow-wrap:anywhere;
    line-height:1.25;
  }
  .result-card .btn{ width:100%; min-height:46px; }
  .status-msg{ font-size:12.5px; }
  .empty-note{ padding: 22px 0; }

  .page-hero{ padding: 38px 0 14px; }
  .page-hero h1{ max-width:none; font-size: clamp(30px, 10vw, 38px); }
  .content-section{ padding: 16px 0 46px; }
  .card-grid{ grid-template-columns: 1fr; gap: 14px; margin: 22px 0; }
  .info-card{ padding:18px; }
  .faq-q{ min-height:58px; padding: 16px 0; }
  .faq-a-inner{ font-size:14px; }
  .contact-grid{ gap: 24px; }
  .form-row textarea{ min-height: 150px; }

  .site-footer{ padding: 36px 0 22px; margin-top: 24px; }
  .footer-grid{ grid-template-columns: 1fr; gap: 24px; }
  .footer-brand p{ max-width:none; }
  .site-footer a{ display:inline-flex; min-height:32px; align-items:center; }
  .footer-bottom{ flex-direction:column; font-size:12px; }

  .consent-banner{
    left:10px;
    right:10px;
    bottom:10px;
    padding: 14px;
    border-radius: 14px;
  }
  .consent-banner p{ min-width:0; }
  .consent-banner .btn{ width:100%; }
}

@media (max-width: 380px){
  .container{ padding: 0 12px; }
  .hero-stats{ grid-template-columns: 1fr; }
  .tool-tabs{ grid-template-columns: 1fr; }
  .page-grid{ grid-template-columns: 1fr; }
}