* { box-sizing: border-box; }
::view-transition-old(root) { animation: page-out .18s cubic-bezier(.4,0,1,1) both; }
::view-transition-new(root) { animation: page-in .28s cubic-bezier(.2,.8,.2,1) both; }
::view-transition-group(selected-tool-icon), ::view-transition-group(selected-tool-title) { animation-duration: .34s; animation-timing-function: cubic-bezier(.2,.8,.2,1); }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; background: var(--page); }
body { margin: 0; min-width: 320px; overflow-x: hidden; background: var(--page); color: var(--text); font-family: var(--font-sans); font-size: 15px; line-height: 1.6; }
body.menu-open, body.dialog-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }
img { max-width: 100%; }
::selection { background: var(--primary); color: #fff; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 100; top: 10px; left: 10px; padding: 10px 14px; border-radius: 10px; background: var(--text); color: var(--page); transform: translateY(-150%); }
.skip-link:focus { transform: none; }
.container { position: relative; width: min(calc(100% - 56px), var(--container)); margin-inline: auto; }
main, az-footer { position: relative; z-index: 2; }
ambient-waves { position: fixed; z-index: 0; inset: 0; overflow: hidden; pointer-events: none; }
ambient-waves canvas { width: 100%; height: 100%; opacity: .5; }
[data-theme="dark"] ambient-waves canvas { opacity: .48; }
.page-wash { position: fixed; z-index: 1; inset: 0; pointer-events: none; background: linear-gradient(180deg, transparent 0 68%, var(--page) 95%); }

/* Application shell */
az-header { position: relative; z-index: 50; display: block; }
.app-sidebar { position: fixed; z-index: 42; inset: 0 auto 0 0; width: var(--sidebar-width); padding: 26px 18px 20px; display: flex; flex-direction: column; border-right: 1px solid var(--border); background: var(--sidebar); }
.brand { display: inline-flex; align-items: center; font-size: 20px; font-weight: 800; letter-spacing: -.8px; }
.brand b { color: var(--primary); }
.sidebar-brand { margin: 0 10px 28px; }
.sidebar-nav { position: relative; min-height: 0; overflow-y: auto; scrollbar-width: thin; }
.sidebar-label { margin: 12px 12px 7px; color: var(--text-muted); font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.sidebar-link { position: relative; z-index: 1; min-height: 52px; padding: 7px 9px; display: flex; align-items: center; gap: 11px; border: 1px solid transparent; border-radius: 12px; color: var(--text-secondary); transition: background .18s, color .18s, border-color .18s; }
.sidebar-link:hover { background: var(--surface-soft); color: var(--text); }
.sidebar-link[aria-current="page"] { border-color: transparent; background: transparent; color: var(--text); }
.sidebar-glider { position: absolute; z-index: 0; top: 0; left: 0; right: 0; border: 1px solid var(--border); border-radius: 12px; background: var(--sidebar-active); box-shadow: 0 8px 24px rgba(52,120,246,.06); transition: transform .28s cubic-bezier(.2,.8,.2,1), height .28s cubic-bezier(.2,.8,.2,1), opacity .18s; pointer-events: none; }
.sidebar-link .tool-icon { width: 34px; height: 34px; border-radius: 10px; font-size: 9px; }
.sidebar-link > span:not(.tool-icon) { display: grid; }
.sidebar-link strong { font-size: 12px; font-weight: 750; }
.sidebar-link small { color: var(--text-muted); font-size: 10px; }
.sidebar-symbol { width: 34px; height: 34px; display: grid !important; place-items: center; flex: none; border-radius: 10px; background: var(--surface-soft); color: var(--text-muted); font-size: 17px; }
.sidebar-separator { height: 1px; margin: 14px 10px; background: var(--border); }
.sidebar-feedback { min-height: 44px; margin-top: auto; padding: 10px 12px; display: flex; align-items: center; justify-content: space-between; border-radius: 11px; color: var(--text-secondary); font-size: 12px; font-weight: 700; }
.sidebar-feedback:hover { background: var(--surface-soft); color: var(--text); }

.site-header { position: fixed; z-index: 41; top: 0; left: var(--sidebar-width); right: 0; height: 72px; border-bottom: 1px solid transparent; background: rgba(247,249,253,.75); backdrop-filter: blur(18px) saturate(140%); transition: border-color .2s, box-shadow .2s; }
[data-theme="dark"] .site-header { background: rgba(7,11,20,.78); }
.site-header.scrolled { border-color: var(--border); box-shadow: var(--shadow-sm); }
.header-inner { width: min(calc(100% - 56px), var(--container)); height: 100%; margin: auto; display: flex; align-items: center; gap: 22px; }
.mobile-brand { display: none; }
.desktop-nav { display: flex; align-items: center; gap: 22px; }
.desktop-nav a { min-height: 44px; padding: 0 3px; display: inline-flex; align-items: center; color: var(--text-secondary); font-size: 12px; font-weight: 700; }
.desktop-nav a:hover, .desktop-nav a[aria-current="page"] { color: var(--text); }
.header-actions { position: relative; margin-left: auto; display: flex; align-items: center; gap: 8px; }
.header-search { width: 230px; min-height: 44px; padding: 0 9px 0 14px; display: flex; align-items: center; justify-content: space-between; border: 1px solid var(--border); border-radius: 11px; background: var(--surface); color: var(--text-muted); cursor: pointer; font-size: 12px; box-shadow: var(--shadow-sm); }
.header-search:hover { border-color: var(--border-strong); }
kbd { padding: 3px 6px; border: 1px solid var(--border); border-radius: 6px; background: var(--surface-soft); color: var(--text-muted); font: 10px var(--font-mono); }
.icon-button, .favorite-button { width: 44px; height: 44px; display: inline-grid; place-items: center; flex: none; border: 1px solid var(--border); border-radius: 11px; background: var(--surface); color: var(--text-secondary); cursor: pointer; }
.icon-button:hover, .favorite-button:hover { border-color: var(--border-strong); background: var(--surface-soft); color: var(--text); }
.favorite-button[aria-pressed="true"] { color: #b46d00; }
.mobile-menu-button { display: none; }
.theme-popover { position: absolute; top: 50px; right: 0; width: 198px; padding: 7px; border: 1px solid var(--border); border-radius: 14px; background: var(--elevated); box-shadow: var(--shadow-md); }
.theme-option { width: 100%; min-height: 44px; padding: 9px 11px; display: flex; align-items: center; justify-content: space-between; border: 0; border-radius: 9px; background: transparent; color: var(--text-secondary); cursor: pointer; font-size: 12px; text-align: left; }
.theme-option:hover, .theme-option[aria-pressed="true"] { background: var(--surface-strong); color: var(--text); }

@media (min-width: 1025px) {
  body > main, body > az-footer { margin-left: var(--sidebar-width); }
}

/* Mobile navigation */
.mobile-backdrop { position: fixed; z-index: 45; inset: 0; background: rgba(5,12,25,.42); backdrop-filter: blur(3px); }
.mobile-panel { position: fixed; z-index: 46; inset: 0 0 0 auto; width: min(390px, 92vw); padding: 18px; overflow-y: auto; background: var(--elevated); box-shadow: var(--shadow-lg); transform: translateX(100%); transition: transform .22s ease; }
.mobile-panel.open { transform: none; }
.mobile-panel-head { min-height: 48px; display: flex; align-items: center; justify-content: space-between; }
.mobile-nav { margin: 16px 0 24px; display: grid; gap: 5px; }
.mobile-nav a { min-height: 48px; padding: 0 12px; display: flex; align-items: center; justify-content: space-between; border-radius: 10px; color: var(--text-secondary); font-size: 13px; font-weight: 700; }
.mobile-nav a:hover { background: var(--surface-soft); color: var(--text); }
.mobile-nav a span { color: var(--text-muted); font-size: 11px; }
.mobile-theme { padding-top: 18px; border-top: 1px solid var(--border); }
.mobile-theme-options { margin-top: 10px; display: flex; gap: 6px; flex-wrap: wrap; }

/* Search dialog */
.search-dialog { position: fixed; z-index: 60; inset: 0; padding: 12vh 20px 20px; overflow: hidden; background: rgba(5,12,25,.45); backdrop-filter: blur(10px); }
.search-box { width: min(680px, 100%); max-height: min(680px, 76vh); margin: auto; overflow: hidden; border: 1px solid var(--border-strong); border-radius: 20px; background: var(--elevated); box-shadow: var(--shadow-lg); transform-origin: center center; will-change: transform, opacity, border-radius; }
.search-input-row { min-height: 66px; padding: 0 12px 0 20px; display: flex; align-items: center; gap: 12px; border-bottom: 1px solid var(--border); }
.search-input-row input { min-width: 0; flex: 1; border: 0; outline: 0; background: transparent; color: var(--text); font-size: 16px; }
.search-list-head { padding: 13px 18px 5px; display: flex; justify-content: space-between; color: var(--text-muted); font-size: 11px; }
.search-list { max-height: calc(76vh - 104px); padding: 7px 9px 12px; overflow: auto; }
.search-item { min-height: 58px; padding: 8px 10px; display: flex; align-items: center; gap: 12px; border-radius: 12px; }
.search-item:hover { background: var(--surface-soft); }
.search-item > span:not(.tool-icon) { min-width: 0; display: grid; flex: 1; }
.search-item strong { font-size: 13px; }
.search-item small { overflow: hidden; color: var(--text-muted); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.search-item b { color: var(--text-muted); }
.search-dialog.is-open .search-item { animation: search-item-in .34s cubic-bezier(.2,.8,.2,1) both; animation-delay: calc(var(--search-index, 0) * 32ms + 90ms); }
.search-dialog.is-open .search-empty { animation: soft-rise .3s .08s cubic-bezier(.2,.8,.2,1) both; }
.search-empty { padding: 42px 24px; display: grid; justify-items: center; gap: 9px; color: var(--text-muted); text-align: center; }
.search-empty strong { color: var(--text); font-size: 17px; }

/* Shared controls */
.button { min-height: 46px; padding: 0 18px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; border: 1px solid transparent; border-radius: 11px; cursor: pointer; font-size: 13px; font-weight: 750; transition: transform .18s, background .18s, border-color .18s, box-shadow .18s; }
.button:hover:not(:disabled) { transform: translateY(-1px); }
.button:disabled { opacity: .48; cursor: not-allowed; }
.button-primary { background: var(--primary); color: #fff; box-shadow: 0 12px 28px rgba(52,120,246,.2); }
.button-primary:hover:not(:disabled) { background: var(--primary-hover); }
.button-secondary { border-color: var(--border-strong); background: var(--surface); color: var(--text); }
.button-secondary:hover:not(:disabled), .button-ghost:hover:not(:disabled) { background: var(--surface-strong); }
.button-ghost { background: transparent; color: var(--text-secondary); }

/* Home dashboard */
.dashboard { padding: 118px 0 64px; overflow: clip; }
.dashboard-hero { position: relative; padding: 42px 20px 50px; text-align: center; }
.dashboard-hero::before { content: ""; position: absolute; z-index: -1; width: 520px; height: 260px; top: -80px; left: 50%; transform: translateX(-50%); background: radial-gradient(ellipse, rgba(52,120,246,.12), transparent 68%); filter: blur(15px); }
.dashboard-kicker { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 17px; color: var(--primary); font-size: 12px; font-weight: 800; }
.dashboard-kicker::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 5px var(--primary-soft); }
.dashboard-title { max-width: 760px; margin: 0 auto; font-size: clamp(40px,5.4vw,68px); line-height: 1.02; letter-spacing: -3.5px; }
.dashboard-subtitle { max-width: 610px; margin: 18px auto 28px; color: var(--text-secondary); font-size: 16px; }
.dashboard-search { position: relative; isolation: isolate; width: min(720px, 100%); min-height: 64px; margin: 0 auto; padding: 9px 10px 9px 20px; display: flex; align-items: center; gap: 12px; overflow: hidden; border: 1px solid var(--border-strong); border-radius: 17px; background: var(--surface); box-shadow: var(--shadow-md); color: var(--text-muted); text-align: left; cursor: pointer; }
.dashboard-search:hover { border-color: rgba(52,120,246,.45); box-shadow: 0 20px 62px rgba(24,47,86,.12); }
.dashboard-search::before, .dashboard-category-card::before, .quick-tool-card::before, .tool-card::before { content: ""; position: absolute; z-index: 0; inset: 0; opacity: 0; background: radial-gradient(240px circle at var(--pointer-x,50%) var(--pointer-y,50%), rgba(52,120,246,.115), rgba(91,103,244,.035) 42%, transparent 72%); transition: opacity .28s ease; pointer-events: none; }
.dashboard-search.is-pointer-active::before, .dashboard-category-card.is-pointer-active::before, .quick-tool-card.is-pointer-active::before, .tool-card.is-pointer-active::before { opacity: 1; }
.dashboard-search > *, .dashboard-category-card > *, .quick-tool-card > *, .tool-card > * { position: relative; z-index: 1; }
.dashboard-search span:nth-child(2) { flex: 1; }
.dashboard-search .search-action { min-height: 44px; padding: 0 16px; display: inline-flex; align-items: center; border-radius: 10px; background: var(--primary); color: #fff; font-size: 12px; font-weight: 800; }
.hero-shortcuts { margin-top: 14px; display: flex; justify-content: center; flex-wrap: wrap; gap: 7px; color: var(--text-muted); font-size: 11px; }
.hero-shortcuts a { min-height: 44px; padding: 5px 9px; display: inline-flex; align-items: center; border-radius: 8px; }
.hero-shortcuts a:hover { background: var(--surface); color: var(--text); }
.dashboard-section { padding: 28px 0; }
.section-heading { margin-bottom: 18px; display: flex; align-items: end; justify-content: space-between; gap: 20px; }
.section-heading h2 { margin: 0; font-size: clamp(21px,2.4vw,28px); line-height: 1.2; letter-spacing: -1px; }
.section-heading p { margin: 5px 0 0; color: var(--text-muted); font-size: 13px; }
.section-heading > a { min-height: 44px; display: inline-flex; align-items: center; color: var(--primary); font-size: 12px; font-weight: 800; }
.dashboard-category-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.dashboard-category-card { position: relative; isolation: isolate; min-height: 155px; padding: 18px; display: flex; flex-direction: column; justify-content: space-between; overflow: hidden; border: 1px solid var(--border); border-radius: 16px; background: var(--surface); box-shadow: var(--shadow-sm); transition: transform .28s cubic-bezier(.2,.8,.2,1), border-color .18s, box-shadow .28s; }
.dashboard-category-card:hover { transform: perspective(800px) translateY(-3px) rotateX(var(--tilt-x,0deg)) rotateY(var(--tilt-y,0deg)); border-color: var(--border-strong); box-shadow: var(--shadow-md); }
.dashboard-category-card .tool-icon { width: 42px; height: 42px; }
.dashboard-category-card strong { display: block; margin-bottom: 3px; font-size: 14px; }
.dashboard-category-card p { margin: 0; color: var(--text-muted); font-size: 11px; }
.dashboard-category-card footer { display: flex; align-items: end; justify-content: space-between; }
.dashboard-category-card footer span { color: var(--text-muted); font-size: 11px; }
.quick-tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.quick-tool-card { position: relative; isolation: isolate; min-height: 132px; padding: 16px; display: grid; grid-template-columns: auto 1fr auto; align-items: start; gap: 13px; overflow: hidden; border: 1px solid var(--border); border-radius: 15px; background: var(--surface); box-shadow: var(--shadow-sm); transition: transform .28s cubic-bezier(.2,.8,.2,1), border-color .18s, box-shadow .28s; }
.quick-tool-card:hover { transform: perspective(800px) translateY(-3px) rotateX(var(--tilt-x,0deg)) rotateY(var(--tilt-y,0deg)); border-color: var(--border-strong); box-shadow: var(--shadow-md); }
.quick-tool-card > div { min-width: 0; }
.quick-tool-card strong { display: block; margin: 2px 0 6px; font-size: 13px; }
.quick-tool-card p { margin: 0; color: var(--text-muted); font-size: 11px; line-height: 1.55; }
.quick-tool-card a::after { content: ""; position: absolute; inset: 0; }
.quick-tool-card > span:last-child { color: var(--text-muted); }
.privacy-strip { margin-top: 28px; padding: 21px 24px; display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; border: 1px solid var(--border); border-radius: 16px; background: linear-gradient(110deg,var(--surface),var(--surface-soft)); }
.privacy-item { display: flex; gap: 11px; align-items: flex-start; }
.privacy-item b { width: 32px; height: 32px; display: grid; place-items: center; flex: none; border-radius: 9px; background: var(--primary-soft); color: var(--primary); }
.privacy-item strong { display: block; font-size: 12px; }
.privacy-item span { color: var(--text-muted); font-size: 10px; }

/* Icons, cards and catalog */
.tool-icon { width: 42px; height: 42px; display: inline-grid; place-items: center; flex: none; border: 1px solid currentColor; border-radius: 11px; color: var(--text-tool); background: var(--text-tool-soft); font: 600 9px var(--font-mono); }
.category-pdf .tool-icon, .tool-icon.category-pdf { color: var(--pdf); background: var(--pdf-soft); }
.category-image .tool-icon, .tool-icon.category-image { color: var(--image); background: var(--image-soft); }
.category-text .tool-icon, .tool-icon.category-text { color: var(--text-tool); background: var(--text-tool-soft); }
.category-developer .tool-icon, .tool-icon.category-developer { color: var(--developer); background: var(--developer-soft); }
.category-business .tool-icon, .tool-icon.category-business { color: var(--business); background: var(--business-soft); }
.category-security .tool-icon, .tool-icon.category-security { color: var(--security); background: var(--security-soft); }
.category-az .tool-icon, .tool-icon.category-az { color: var(--az); background: var(--az-soft); }
.catalog-page { padding: 105px 0 70px; }
.catalog-head { margin-bottom: 22px; display: flex; align-items: end; justify-content: space-between; gap: 20px; }
.page-kicker { margin-bottom: 9px; color: var(--primary); font: 700 10px var(--font-mono); letter-spacing: .12em; text-transform: uppercase; }
.catalog-head h1, .page-title { margin: 0; font-size: clamp(32px,4vw,48px); line-height: 1.06; letter-spacing: -2.2px; }
.catalog-head p { max-width: 580px; margin: 10px 0 0; color: var(--text-secondary); font-size: 13px; }
.catalog-count { min-width: 88px; padding: 8px 12px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); color: var(--text-muted); font-size: 12px; text-align: center; }
.catalog-toolbar { position: sticky; z-index: 10; top: 82px; margin-bottom: 20px; padding: 9px; display: flex; align-items: center; gap: 9px; border: 1px solid var(--border); border-radius: 15px; background: var(--glass); box-shadow: var(--shadow-sm); backdrop-filter: blur(18px); }
.catalog-search { min-width: 285px; min-height: 46px; padding: 0 13px; display: flex; align-items: center; gap: 9px; border: 1px solid var(--border); border-radius: 10px; background: var(--input); }
.catalog-search input { min-width: 0; flex: 1; border: 0; outline: 0; background: transparent; color: var(--text); }
.filter-row { position: relative; min-width: 0; display: flex; gap: 5px; overflow-x: auto; scrollbar-width: none; }
.filter-glider { position: absolute; z-index: 0; top: 0; left: 0; height: 44px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface); box-shadow: var(--shadow-sm); transition: transform .26s cubic-bezier(.2,.8,.2,1), width .26s cubic-bezier(.2,.8,.2,1), opacity .16s; pointer-events: none; }
.filter-button { position: relative; z-index: 1; min-height: 44px; padding: 0 13px; flex: none; border: 1px solid transparent; border-radius: 9px; background: transparent; color: var(--text-secondary); cursor: pointer; font-size: 11px; font-weight: 750; }
.filter-button:hover { background: var(--surface-strong); }
.filter-button[aria-pressed="true"] { border-color: transparent; background: transparent; color: var(--text); }
.tool-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
.tool-card { position: relative; isolation: isolate; min-height: 218px; padding: 18px; display: flex; flex-direction: column; overflow: hidden; border: 1px solid var(--border); border-radius: 15px; background: var(--surface); box-shadow: var(--shadow-sm); transition: transform .28s cubic-bezier(.2,.8,.2,1), border-color .18s, box-shadow .28s; }
.tool-card:hover { transform: perspective(800px) translateY(-3px) rotateX(var(--tilt-x,0deg)) rotateY(var(--tilt-y,0deg)); border-color: var(--border-strong); box-shadow: var(--shadow-md); }
.dashboard-category-card .tool-icon, .quick-tool-card .tool-icon, .tool-card .tool-icon { transform: translate3d(var(--icon-x,0),var(--icon-y,0),0); transition: transform .34s cubic-bezier(.2,.8,.2,1); }
.tool-card.is-navigating .tool-icon, .quick-tool-card.is-navigating .tool-icon { view-transition-name: selected-tool-icon; }
.tool-card.is-navigating h3, .quick-tool-card.is-navigating strong { view-transition-name: selected-tool-title; }
.tool-header .tool-icon { view-transition-name: selected-tool-icon; }
.tool-header h1 { view-transition-name: selected-tool-title; }
.tool-card-top { display: flex; align-items: start; justify-content: space-between; }
.tool-card .favorite-button { position: relative; z-index: 2; }
.tool-card h3 { margin: 18px 0 7px; font-size: 15px; letter-spacing: -.3px; }
.tool-card h3 a::after { content: ""; position: absolute; inset: 0; }
.tool-card p { margin: 0; color: var(--text-muted); font-size: 11px; }
.tool-card-footer { margin-top: auto; padding-top: 20px; display: flex; justify-content: space-between; color: var(--text-muted); font-size: 10px; }
.catalog-empty { padding: 62px 24px; display: grid; justify-items: center; gap: 8px; border: 1px dashed var(--border-strong); border-radius: 16px; background: var(--surface); text-align: center; }
.catalog-empty strong { font-size: 18px; }
.catalog-empty p { max-width: 440px; margin: 0 0 6px; color: var(--text-muted); }
.recent-section { padding-top: 42px; }

/* Tool workspace */
.tool-page { padding: 100px 0 70px; }
.breadcrumb { margin-bottom: 18px; display: flex; flex-wrap: wrap; gap: 7px; color: var(--text-muted); font-size: 11px; }
.breadcrumb a { min-height: 44px; padding-inline: 3px; display: inline-flex; align-items: center; }
.breadcrumb > span { min-height: 44px; display: inline-flex; align-items: center; }
.breadcrumb a:hover { color: var(--text); }
.tool-header { margin-bottom: 22px; padding-bottom: 22px; display: flex; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--border); }
.tool-heading { display: flex; align-items: flex-start; gap: 15px; }
.tool-heading .tool-icon { width: 52px; height: 52px; border-radius: 13px; }
.tool-heading h1 { margin: 0; font-size: clamp(29px,3.5vw,44px); line-height: 1.08; letter-spacing: -1.8px; }
.tool-heading p { max-width: 680px; margin: 8px 0 0; color: var(--text-secondary); font-size: 13px; }
.tool-meta { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 7px; }
.badge { padding: 5px 8px; border: 1px solid var(--border); border-radius: 7px; color: var(--text-muted); font-size: 10px; }
.badge-success { color: var(--success); }
.workspace { display: grid; grid-template-columns: minmax(0,1.02fr) minmax(0,.98fr); gap: 12px; }
.workspace-panel { min-width: 0; padding: 23px; border: 1px solid var(--border); border-radius: 17px; background: var(--surface); box-shadow: var(--shadow-sm); }
.workspace-panel h2 { margin: 0 0 18px; font-size: 14px; }
.result-panel { background: var(--result); }
.mode-tabs { margin-bottom: 16px; padding: 4px; display: grid; grid-template-columns: repeat(3,1fr); gap: 4px; border: 1px solid var(--border); border-radius: 11px; background: var(--input); }
.mode-tabs-two { grid-template-columns: repeat(2,1fr); }
.mode-tab { min-height: 44px; padding: 0 10px; display: inline-flex; align-items: center; justify-content: center; border-radius: 8px; color: var(--text-secondary); font-size: 11px; font-weight: 750; text-align: center; }
.mode-tab:hover { background: var(--surface-strong); color: var(--text); }
.mode-tab[aria-current="page"] { background: var(--surface); color: var(--text); box-shadow: var(--shadow-sm); }
.organizer-summary { margin: 12px 0 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.organizer-summary[hidden] { display: none; }
.organizer-summary span { min-height: 44px; padding: 8px 12px; display: inline-flex; align-items: center; gap: 5px; border: 1px solid var(--border); border-radius: 9px; background: var(--input); color: var(--text-secondary); font-size: 11px; }
.page-selection-head { margin: 4px 0 10px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.page-selection-head > strong { font-size: 12px; }
.page-selection-head > div { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
.pdf-page-grid { min-height: 112px; max-height: 430px; padding: 10px; display: grid; grid-template-columns: repeat(auto-fill,minmax(86px,1fr)); align-content: start; gap: 9px; overflow: auto; border: 1px solid var(--border); border-radius: 12px; background: var(--input); }
.pdf-page-grid > .field-hint { grid-column: 1 / -1; align-self: center; justify-self: center; }
.pdf-page-card { position: relative; min-width: 0; min-height: 138px; padding: 9px; display: grid; grid-template-rows: 1fr auto; gap: 7px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); color: var(--text-secondary); cursor: pointer; font-size: 10px; text-align: center; }
.pdf-page-card:hover { border-color: var(--border-strong); }
.pdf-page-card input { position: absolute; top: 8px; right: 8px; width: 20px; height: 20px; z-index: 1; accent-color: var(--primary); }
.pdf-page-card:has(input:focus-visible) { outline: 3px solid var(--primary-soft); border-color: var(--primary); }
.pdf-page-card:has(input:checked) { border-color: var(--primary); background: var(--primary-soft); color: var(--text); }
.pdf-page-sheet { min-height: 90px; display: grid; place-items: center; border: 1px solid var(--border); border-radius: 5px; background: var(--surface-strong); }
.pdf-page-sheet b { font-size: 18px; }
.pdf-page-sheet canvas { max-width: 100%; max-height: 132px; display: block; background: #fff; }
.pdf-page-sheet canvas[hidden] { display: none; }
.pdf-page-card[data-thumbnail-ready] .pdf-page-sheet b { display: none; }
.field { display: grid; gap: 7px; margin-bottom: 16px; }
.field label { color: var(--text-secondary); font-size: 12px; font-weight: 750; }
.field-hint { color: var(--text-muted); font-size: 10px; }
.field-error { color: var(--danger); font-size: 11px; font-weight: 650; }
.input, .textarea, .select { width: 100%; border: 1px solid var(--border); border-radius: 10px; background: var(--input); color: var(--text); }
.input, .select { min-height: 44px; padding: 0 12px; }
.textarea { min-height: 215px; padding: 12px; resize: vertical; line-height: 1.55; }
.input:focus, .textarea:focus, .select:focus { outline: 0; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
[aria-invalid="true"] { border-color: var(--danger) !important; }
.code, code, pre { font-family: var(--font-mono); }
.workspace-actions { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 8px; }
.processing-status { position: relative; min-height: 22px; margin-top: 10px; color: var(--text-muted); font-size: 11px; }
.processing-status:not(:empty) { padding-left: 17px; }
.processing-status:not(:empty)::before { content: ""; position: absolute; top: .48em; left: 2px; width: 7px; height: 7px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 0 var(--primary-soft); animation: progress-pulse 1.4s ease-out infinite; }
.button[aria-busy="true"] { position: relative; overflow: hidden; }
.button[aria-busy="true"]::after { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg,transparent 20%,rgba(255,255,255,.22) 48%,transparent 76%); transform: translateX(-110%); animation: button-shimmer 1.25s ease-in-out infinite; }
.upload-zone { position: relative; min-height: 220px; padding: 22px; display: grid; place-items: center; border: 1px dashed var(--border-strong); border-radius: 14px; background: var(--upload); cursor: pointer; text-align: center; }
.upload-zone.dragging, .upload-zone:hover { border-color: var(--primary); background: var(--primary-soft); }
.upload-zone input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.upload-zone > div { display: grid; justify-items: center; gap: 8px; }
.upload-zone p { margin: 0 0 7px; color: var(--text-muted); font-size: 11px; }
.selected-files { display: grid; gap: 6px; margin-top: 10px; }
.file-row { min-width: 0; min-height: 44px; padding: 8px 11px; display: flex; align-items: center; justify-content: space-between; gap: 10px; border: 1px solid var(--border); border-radius: 9px; background: var(--input); font-size: 11px; }
.file-row span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.check-row { display: flex; flex-wrap: wrap; gap: 8px; }
.check-row > .field { min-width: 130px; flex: 1; }
.check-pill { min-height: 44px; padding: 0 11px; display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--border); border-radius: 9px; background: var(--input); color: var(--text-secondary); font-size: 11px; cursor: pointer; }
.operation-add-row { align-items: end; }
.operation-add-row > .field { margin-bottom: 0; }
.operation-add-row > .button { min-height: 44px; }
.operation-list { margin: 0; padding: 0; display: grid; gap: 7px; list-style: none; }
.operation-item { min-width: 0; min-height: 54px; padding: 5px 7px 5px 11px; display: flex; align-items: center; justify-content: space-between; gap: 10px; border: 1px solid var(--border); border-radius: 10px; background: var(--input); }
.operation-item > span:first-child { min-width: 0; display: flex; align-items: center; gap: 9px; }
.operation-item > span:first-child b { width: 24px; height: 24px; display: inline-grid; place-items: center; flex: none; border-radius: 7px; background: var(--primary-soft); color: var(--primary); font-size: 10px; }
.operation-item strong { overflow: hidden; color: var(--text-secondary); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.operation-actions { display: flex; gap: 4px; flex: none; }
.operation-actions .icon-button { border-radius: 8px; }
.range-row { display: grid; grid-template-columns: 1fr 92px; align-items: center; gap: 12px; }
.result-empty { min-height: 260px; display: grid; place-items: center; color: var(--text-muted); text-align: center; }
.result-empty > div { display: grid; gap: 6px; }
.result-empty strong { color: var(--text-secondary); }
.result-output { min-height: 260px; }
.output-code { max-height: 520px; padding: 14px; overflow: auto; border: 1px solid var(--border); border-radius: 10px; background: var(--input); color: var(--text); white-space: pre-wrap; word-break: break-word; }
.cleanup-comparison { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px; }
.cleanup-comparison section { min-width: 0; }
.cleanup-comparison h3 { margin: 0 0 8px; font-size: 12px; }
.cleanup-stats { margin-bottom: 8px; display: flex; flex-wrap: wrap; gap: 5px; }
.cleanup-stats span { min-height: 32px; padding: 5px 7px; display: inline-flex; align-items: center; gap: 4px; border: 1px solid var(--border); border-radius: 7px; background: var(--input); color: var(--text-muted); font-size: 9px; }
.cleanup-preview, .cleanup-output { min-height: 250px; max-height: 480px; margin: 0; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; }
.cleanup-preview { padding: 12px; border: 1px solid var(--border); border-radius: 10px; background: var(--input); color: var(--text-secondary); font-size: 11px; }
.cleanup-output { font-family: var(--font-mono); font-size: 11px; }
.studio-output { max-height: 480px; margin: 14px 0 0; padding: 0; display: grid; gap: 7px; overflow: auto; list-style: none; }
.studio-output li { min-width: 0; min-height: 54px; padding: 6px 6px 6px 11px; display: flex; align-items: center; justify-content: space-between; gap: 9px; border: 1px solid var(--border); border-radius: 10px; background: var(--input); }
.studio-output code { min-width: 0; overflow-wrap: anywhere; color: var(--text); font-size: 10px; }
.studio-output .button { min-height: 44px; flex: none; }
.status { margin-bottom: 12px; padding: 11px 12px; border: 1px solid var(--border); border-radius: 9px; font-size: 11px; }
.status.success { border-color: rgba(18,128,93,.28); background: rgba(18,128,93,.08); color: var(--success); }
.status.success::before { content: "✓"; width: 20px; height: 20px; margin-right: 8px; display: inline-grid; place-items: center; border-radius: 50%; background: rgba(18,128,93,.12); animation: check-pop .36s cubic-bezier(.2,1.5,.4,1) both; }
.result-output.is-entering { animation: result-in .34s cubic-bezier(.2,.8,.2,1) both; }
.status.error { border-color: rgba(201,54,79,.28); background: rgba(201,54,79,.08); color: var(--danger); }
.stats-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; }
.stat-card { min-height: 88px; padding: 13px; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid var(--border); border-radius: 10px; background: var(--input); }
.stat-card strong { font-size: 20px; }
.stat-card span { color: var(--text-muted); font-size: 10px; }
.image-preview { max-height: 390px; margin-bottom: 15px; display: block; border: 1px solid var(--border); border-radius: 11px; }
.privacy-note { margin: 14px 0 0; padding: 11px 13px; display: flex; gap: 8px; border-radius: 10px; background: var(--primary-soft); color: var(--text-secondary); font-size: 10px; }
.related-tools { padding-top: 48px; }

/* Informational pages and footer */
.content-page { min-height: 70vh; padding: 118px 0 70px; }
.content-card { max-width: 820px; padding: 38px; border: 1px solid var(--border); border-radius: 18px; background: var(--surface); box-shadow: var(--shadow-sm); }
.content-card h1 { margin: 0 0 18px; font-size: clamp(32px,4vw,48px); line-height: 1.08; letter-spacing: -2px; }
.content-card h2 { margin: 32px 0 9px; font-size: 20px; }
.content-card p, .content-card li { color: var(--text-secondary); }
.feedback-form { margin-top: 28px; }
.status > p { margin: 0; color: inherit; }
.feedback-actions { margin-top: 14px; display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 8px; }
.feedback-actions .button { width: 100%; min-width: 0; justify-content: center; text-align: center; }
.site-footer { padding: 52px max(28px, calc((100vw - var(--sidebar-width) - var(--container))/2)) 22px; border-top: 1px solid var(--border); background: rgba(255,255,255,.45); }
[data-theme="dark"] .site-footer { background: rgba(7,11,20,.5); }
.footer-inner { display: grid; grid-template-columns: 1fr auto auto; gap: 70px; }
.footer-brand p { max-width: 330px; color: var(--text-muted); font-size: 11px; }
.footer-column { min-width: 130px; display: grid; align-content: start; gap: 9px; }
.footer-column strong { margin-bottom: 4px; font-size: 12px; }
.footer-column a { min-height: 44px; display: inline-flex; align-items: center; color: var(--text-muted); font-size: 11px; }
.footer-column a:hover { color: var(--text); }
.footer-bottom { margin-top: 34px; padding-top: 18px; display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 10px; }

/* Progressive reveal */
.reveal { opacity: 0; transform: translateY(12px); transition: opacity .45s ease, transform .45s ease; }
.reveal.visible { opacity: 1; transform: none; }
.motion-ready [data-motion-grid] > * { opacity: 0; transform: translateY(14px) scale(.985); }
.motion-ready [data-motion-grid].is-visible > * { opacity: 1; transform: none; transition: opacity .42s cubic-bezier(.2,.8,.2,1), transform .46s cubic-bezier(.2,.8,.2,1); transition-delay: calc(var(--motion-index,0) * 42ms); }
.motion-ready [data-motion-grid].is-visible > .dashboard-category-card:hover,
.motion-ready [data-motion-grid].is-visible > .quick-tool-card:hover,
.motion-ready [data-motion-grid].is-visible > .tool-card:hover { transform: perspective(800px) translateY(-3px) rotateX(var(--tilt-x,0deg)) rotateY(var(--tilt-y,0deg)); }

@keyframes page-out { to { opacity: 0; transform: translateY(4px) scale(.996); } }
@keyframes page-in { from { opacity: 0; transform: translateY(6px) scale(.996); } }
@keyframes search-item-in { from { opacity: 0; transform: translateY(8px); } }
@keyframes soft-rise { from { opacity: 0; transform: translateY(8px); } }
@keyframes result-in { from { opacity: 0; transform: translateY(8px) scale(.995); } }
@keyframes check-pop { from { opacity: 0; transform: scale(.45) rotate(-20deg); } }
@keyframes progress-pulse { 60%,100% { box-shadow: 0 0 0 8px transparent; } }
@keyframes button-shimmer { 55%,100% { transform: translateX(110%); } }

@media (max-width: 1180px) {
  .dashboard-category-grid { grid-template-columns: repeat(3,1fr); }
  .quick-tools-grid { grid-template-columns: repeat(2,1fr); }
  .tool-grid { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 1024px) {
  .app-sidebar, .desktop-nav { display: none; }
  .site-header { left: 0; }
  .mobile-brand, .mobile-menu-button { display: inline-flex; }
  .header-search { width: min(280px,34vw); }
  .site-footer { padding-inline: 28px; }
}

@media (max-width: 760px) {
  .container { width: min(calc(100% - 32px), var(--container)); }
  .site-header { height: 66px; }
  .header-inner { width: calc(100% - 28px); gap: 10px; }
  .brand { font-size: 18px; }
  .header-search { width: 44px; padding: 0; justify-content: center; }
  .header-search span { font-size: 0; }
  .header-search span::before { content: "⌕"; font-size: 18px; }
  .header-search kbd { display: none; }
  .dashboard { padding: 84px 0 44px; }
  .dashboard-hero { padding: 30px 0 34px; }
  .dashboard-title { font-size: clamp(36px,11vw,50px); letter-spacing: -2.6px; }
  .dashboard-subtitle { font-size: 14px; }
  .dashboard-search { min-height: 58px; padding-left: 15px; }
  .dashboard-search .search-action { width: 44px; padding: 0; justify-content: center; font-size: 0; }
  .dashboard-search .search-action::before { content: "→"; font-size: 16px; }
  .hero-shortcuts { display: none; }
  .dashboard-section { padding: 22px 0; }
  .section-heading { align-items: start; }
  .section-heading p { display: none; }
  .dashboard-category-grid { grid-template-columns: repeat(2,1fr); gap: 9px; }
  .dashboard-category-card { min-height: 142px; padding: 14px; }
  .quick-tools-grid, .privacy-strip { grid-template-columns: 1fr; }
  .quick-tool-card { min-height: 118px; }
  .privacy-strip { gap: 15px; }
  .catalog-page { padding: 88px 0 50px; }
  .catalog-head { margin-bottom: 14px; align-items: start; }
  .catalog-head h1 { font-size: 34px; }
  .catalog-head p { margin-top: 6px; }
  .catalog-count { min-width: auto; white-space: nowrap; }
  .catalog-toolbar { position: static; padding: 0; display: grid; border: 0; background: transparent; box-shadow: none; }
  .catalog-search { width: 100%; min-width: 0; background: var(--surface); }
  .filter-row { margin-inline: -16px; padding-inline: 16px; }
  .tool-grid { grid-template-columns: 1fr; }
  .tool-card { min-height: 190px; }
  .tool-page { padding: 84px 0 50px; }
  .tool-header { align-items: flex-start; }
  .tool-heading { gap: 11px; }
  .tool-heading .tool-icon { width: 44px; height: 44px; }
  .tool-heading h1 { font-size: 29px; }
  .tool-heading p { font-size: 12px; }
  .workspace { grid-template-columns: 1fr; }
  .workspace-panel { padding: 18px; }
  .upload-zone { min-height: 190px; }
  .result-empty, .result-output { min-height: 180px; }
  .cleanup-comparison { grid-template-columns: 1fr; }
  .cleanup-preview, .cleanup-output { min-height: 180px; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .content-page { padding: 88px 0 50px; }
  .content-card { padding: 25px 20px; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { display: grid; }
}

@media (max-width: 430px) {
  .dashboard-category-grid { grid-template-columns: 1fr 1fr; }
  .dashboard-category-card { min-width: 0; }
  .dashboard-category-card p { display: none; }
  .search-dialog { padding: 8px; }
  .search-box { margin-top: 58px; max-height: calc(100vh - 74px); border-radius: 16px; }
  .search-list { max-height: calc(100vh - 180px); }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
  .page-selection-head { align-items: flex-start; flex-direction: column; }
  .page-selection-head > div { width: 100%; justify-content: stretch; }
  .page-selection-head .button { flex: 1; }
  .pdf-page-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .operation-item { align-items: flex-start; flex-direction: column; }
  .operation-actions { width: 100%; }
  .operation-actions .icon-button { flex: 1; }
  .studio-output li { align-items: stretch; flex-direction: column; }
  .studio-output .button { width: 100%; }
}

@media (hover: none), (pointer: coarse) {
  .dashboard-category-card:hover, .quick-tool-card:hover, .tool-card:hover,
  .motion-ready [data-motion-grid].is-visible > .dashboard-category-card:hover,
  .motion-ready [data-motion-grid].is-visible > .quick-tool-card:hover,
  .motion-ready [data-motion-grid].is-visible > .tool-card:hover { transform: none; }
  .dashboard-search::before, .dashboard-category-card::before, .quick-tool-card::before, .tool-card::before { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition-duration: .01ms !important; }
  ambient-waves { display: none; }
  .motion-ready [data-motion-grid] > * { opacity: 1; transform: none; }
  ::view-transition-old(root), ::view-transition-new(root), ::view-transition-group(selected-tool-icon), ::view-transition-group(selected-tool-title) { animation: none !important; }
}

.tool-header-actions { display:flex; align-items:center; gap:10px; flex-wrap:wrap; }
.share-status { min-height:1.5em; margin:8px 0 0; color:var(--text-muted); font-size:.9rem; }
.tool-guidance { margin-top:28px; }
.guidance-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px; }
.guidance-grid article, .faq-list { border:1px solid var(--border); border-radius:var(--radius-lg); background:var(--surface); padding:18px; }
.guidance-grid h3, .faq-list h3 { margin:0 0 8px; }
.guidance-grid p, .faq-list p { margin:0; color:var(--text-muted); }
.faq-list { margin-top:14px; }
.faq-list details { border-top:1px solid var(--border); padding:12px 0; }
.faq-list details:first-of-type { margin-top:8px; }
.faq-list summary { cursor:pointer; font-weight:700; }
.faq-list details p { padding-top:8px; }
.trust-warning { margin-top:18px; }
.status.warning { border-color:var(--warning-border, var(--border)); background:var(--warning-soft, var(--surface-muted)); color:var(--text); }
.last-updated { margin-top:32px; color:var(--text-muted); font-size:.92rem; }
.not-found-card { text-align:center; }
.not-found-card .workspace-actions { justify-content:center; }

@media (max-width: 760px) {
  .guidance-grid { grid-template-columns:1fr; }
  .tool-header-actions { width:100%; justify-content:space-between; }
  .feedback-actions { grid-template-columns:1fr; }
}