/* Usability layer: structure and interaction. Typography is finalized in global-ux.css. */

:where(a,button,input,select,textarea,summary):focus-visible{outline:3px solid rgba(19,111,99,.34);outline-offset:3px}
input[aria-invalid="true"]{color:var(--danger);border-color:var(--danger)}
input,select,textarea{min-width:0}
.ad-exclusion-zone{position:relative;isolation:isolate}

.app-hero{padding:52px 0 34px}
.app-hero-inner{max-width:820px}
.app-hero .hero-description{max-width:720px}
.app-hero .hero-actions{margin-bottom:18px}

.workspace-section{padding:28px 0 78px}
.workspace-shell{border:1px solid var(--line);border-radius:24px;background:var(--card);box-shadow:var(--shadow);overflow:visible}
.workspace-header{padding:26px 28px 0}
.workspace-header h2{font-size:clamp(26px,4vw,38px);margin:5px 0 7px}
.workspace-header p{max-width:760px;margin:0;color:var(--muted)}
.calculator-tabs{position:sticky;top:72px;z-index:20;display:flex;gap:8px;overflow-x:auto;padding:18px 28px;border-bottom:1px solid var(--line);background:var(--card);scrollbar-width:none;overscroll-behavior-x:contain}
.calculator-tabs::-webkit-scrollbar{display:none}
.calculator-tab{flex:0 0 auto;min-height:44px;padding:0 17px;border:1px solid var(--line);border-radius:12px;background:transparent;color:var(--muted);cursor:pointer;white-space:nowrap;touch-action:manipulation}
.calculator-tab:hover{color:var(--text);border-color:var(--accent)}
.calculator-tab[aria-selected="true"]{background:var(--accent);border-color:var(--accent);color:#fff}
.workspace-content{padding:26px}
.calculator-panel[hidden]{display:none!important}
.workspace-content .calculator-card{box-shadow:none;margin:0;border-radius:18px}
.workspace-content .calculator-head{padding:24px 26px}
.workspace-content .calculator-layout{align-items:start}
.workspace-content .result-panel{position:sticky;top:150px;align-self:start;scroll-margin-top:150px}

.input-section{border:0;padding:0;margin:0 0 24px}
.input-section+.input-section{padding-top:22px;border-top:1px solid var(--line)}
.input-section legend{width:100%;padding:0 0 12px;font-size:15px;color:var(--text)}
.input-section-note{display:block;margin:-7px 0 13px;color:var(--muted);font-size:12px;line-height:1.6}
.advanced-options{margin-top:20px;border:1px solid var(--line);border-radius:13px;background:var(--card-2)}
.advanced-options summary{padding:14px 16px;cursor:pointer;font-size:13px;list-style:none}
.advanced-options summary::-webkit-details-marker{display:none}
.advanced-options summary:after{content:"＋";float:right;color:var(--accent)}
.advanced-options[open] summary:after{content:"−"}
.advanced-options-body{padding:0 16px 16px}
.form-actions{display:flex;gap:10px;align-items:center;margin-top:22px}
.form-actions .calculate-button{margin:0;flex:1}
.form-actions .copy-button{width:auto;min-width:142px;margin:0;height:51px;padding:0 16px}

.quick-next{padding:0 0 64px}
.quick-next-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.quick-next-card{display:flex;justify-content:space-between;gap:24px;align-items:center;padding:25px;border:1px solid var(--line);border-radius:18px;background:var(--card)}
.quick-next-card h3{margin:4px 0 7px;font-size:20px}
.quick-next-card p{margin:0;color:var(--muted);font-size:14px}
.quick-next-card .button{flex:0 0 auto}

.guide-hub{padding:8px 0 76px}
.guide-hub-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:18px}
.guide-hub-head h2{margin:5px 0 0;font-size:clamp(25px,4vw,38px)}
.guide-hub-head>a{flex:0 0 auto;color:var(--accent);font-size:14px}
.guide-hub-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.guide-link-card{display:flex;flex-direction:column;gap:8px;min-height:150px;padding:22px;border:1px solid var(--line);border-radius:17px;background:var(--card);transition:border-color .16s ease,transform .16s ease}
.guide-link-card:hover{border-color:var(--accent);transform:translateY(-1px)}
.guide-link-card b{font-size:18px;line-height:1.4}
.guide-link-card span{color:var(--muted);font-size:13px;line-height:1.7}

.compact-faq{padding:58px 0 72px}
.compact-faq-list{max-width:820px}
.compact-faq details{padding:17px 0;border-bottom:1px solid var(--line)}
.compact-faq summary{cursor:pointer}
.compact-faq p{color:var(--muted);font-size:14px}

/* Long sections render when they approach the viewport, reducing initial work. */
.quick-next,.guide-hub,.compact-faq,.site-footer{content-visibility:auto;contain-intrinsic-size:1px 640px}

/* Bulk audit usability */
.audit-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:20px 0 26px}
.audit-step{padding:16px;border:1px solid var(--line);border-radius:14px;background:var(--card)}
.audit-step b{display:block;margin-bottom:4px}
.audit-step span{color:var(--muted);font-size:13px}
.audit-toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin:18px 0}
.audit-toolbar-group{display:flex;gap:9px;flex-wrap:wrap}
.audit-toolbar .button{min-height:44px;padding:0 15px}
.audit-help{margin:0 0 14px;color:var(--muted);font-size:13px}
.audit-summary{position:sticky;top:78px;z-index:12;background:var(--bg);padding:10px 0}
.row-remove{min-width:44px;min-height:44px;border-radius:10px}

@media(max-width:900px){
  .workspace-content{padding:18px}
  .workspace-content .calculator-layout{grid-template-columns:1fr}
  .workspace-content .input-panel{border-right:0;border-bottom:1px solid var(--line)}
  .workspace-content .result-panel{position:static;scroll-margin-top:172px}
  .quick-next-grid,.guide-hub-grid{grid-template-columns:1fr}
  .guide-link-card{min-height:0}
  .audit-steps{grid-template-columns:1fr}
}

@media(max-width:720px){
  .app-hero{padding:30px 0 22px}
  .app-hero .hero-actions{display:grid}
  .app-hero .button{width:100%}
  .workspace-section{padding-top:16px}
  .workspace-shell{border-left:0;border-right:0;border-radius:0;margin-left:-20px;margin-right:-20px}
  .workspace-header{padding:22px 20px 0}
  .calculator-tabs{top:118px;padding:14px 20px}
  .workspace-content{padding:14px 12px 20px}
  .workspace-content .calculator-head{padding:20px}
  .workspace-content .input-panel,.workspace-content .result-panel{padding:20px}
  .field-grid{grid-template-columns:1fr}
  .field-wide{grid-column:auto}
  .form-actions{display:grid}
  .form-actions .copy-button{width:100%}
  .quick-next-card{display:block}
  .quick-next-card .button{width:100%;margin-top:18px}
  .guide-hub-head{display:block}
  .guide-hub-head>a{display:inline-block;margin-top:12px}

  .audit-summary{position:static;grid-template-columns:1fr 1fr}
  .audit-wrap{overflow:visible;border:0;background:transparent}
  .audit-table{display:block;min-width:0;width:100%}
  .audit-table thead{display:none}
  .audit-table tbody{display:grid;gap:14px}
  .audit-table tr{display:block;border:1px solid var(--line);border-radius:16px;background:var(--card);padding:9px 14px}
  .audit-table td{display:grid;grid-template-columns:108px minmax(0,1fr);gap:12px;align-items:center;padding:10px 0!important;border-bottom:1px solid var(--line);text-align:right!important;white-space:normal!important}
  .audit-table td:last-child{border-bottom:0}
  .audit-table td:before{content:attr(data-label);text-align:left;color:var(--muted);font-size:12px}
  .audit-table input,.audit-table .bulk-name{width:100%!important;text-align:right}
  .row-remove{justify-self:end}
}

@media(max-width:460px){
  .calculator-tabs{gap:6px}
  .calculator-tab{padding:0 13px}
  .audit-summary{grid-template-columns:1fr}
  .audit-toolbar,.audit-toolbar-group{display:grid;width:100%}
  .audit-toolbar .button{width:100%}
}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}
}