/* AiTOM Product UI v0.1 candidate. T026 top navigation, pill, card and field pattern only. */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;background:var(--color-canvas);color:var(--color-text);font-family:var(--font-family);font-size:var(--font-size-md);line-height:var(--line-height-body)}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
:focus-visible{outline:3px solid var(--color-focus);outline-offset:3px}
.skip-link{position:absolute;top:-100px;left:16px;z-index:100;padding:10px 16px;background:var(--color-primary);color:var(--color-on-primary);border-radius:var(--radius-sm)}
.skip-link:focus{top:10px}
.site-header{height:64px;position:sticky;top:0;z-index:40;border-bottom:1px solid var(--color-border);background:var(--color-canvas);display:flex;align-items:center;justify-content:space-between;padding:0 32px}
.site-header .brand{display:inline-flex;align-items:center}.site-header .brand img{display:block;width:86px;height:auto}
.desktop-nav{display:flex;align-items:center;gap:4px;white-space:nowrap}
.desktop-nav a{display:inline-flex;align-items:center;min-height:36px;padding:5px 10px;border-radius:8px;font-size:14px;line-height:18px}
.desktop-nav a:hover,.desktop-nav a[aria-current=page]{background:var(--color-surface)}
.header-actions{display:flex;align-items:center;gap:8px}
.pill{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 22px;border:0;border-radius:var(--button-radius);background:var(--color-primary);color:var(--color-on-primary);font-size:16px;font-weight:500;line-height:1.2;text-align:center;cursor:pointer;transition:opacity var(--motion-fast),transform var(--motion-fast)}
.pill:hover{opacity:.85}.pill:active{transform:scale(.98)}
.pill.small{min-height:36px;font-size:14px;padding:0 16px}
.pill.secondary{background:var(--color-subtle);color:var(--color-text)}
.pill:disabled,.pill[aria-disabled=true]{cursor:not-allowed;opacity:.5;transform:none}
.icon-button{display:inline-flex;justify-content:center;align-items:center;width:44px;height:44px;border:0;border-radius:50%;background:transparent;color:var(--color-text);font-size:22px}
.icon-button:hover{background:var(--color-surface)}
.mobile-menu{display:none}
.mobile-nav{border-bottom:1px solid var(--color-border);background:var(--color-canvas);padding:12px 24px}
.mobile-nav a{display:flex;align-items:center;min-height:44px;padding:0 8px;border-radius:8px;font-size:14px}
.mobile-nav a:hover,.mobile-nav a[aria-current=page]{background:var(--color-surface)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.case-card{position:relative;background:var(--color-surface);color:var(--color-text);text-align:left;padding:24px;border-radius:var(--card-radius);min-height:220px;border:1px solid transparent;display:flex;align-items:flex-start;flex-direction:column}
.case-card:hover{border-color:var(--color-border);background:var(--color-subtle)}
.case-card .card-title{font-weight:500;font-size:20px;line-height:26px;margin-bottom:12px}
.case-card .card-description{color:var(--color-muted);font-size:14px;line-height:21px;margin-bottom:24px}
.tags{margin-top:auto;font-size:12px;color:var(--color-muted)}
.field label{display:block;font-size:14px;font-weight:500;margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;min-height:44px;padding:10px 14px;border:1px solid var(--color-control-border);border-radius:var(--radius-sm);background:var(--color-canvas);color:var(--color-text)}
.field textarea{resize:vertical}
.field input[aria-invalid=true],.field select[aria-invalid=true],.field textarea[aria-invalid=true]{border-color:var(--color-danger)}
.field .error{color:var(--color-danger);font-size:14px;line-height:1.5;min-height:21px;margin:6px 0 0}
.notice{padding:16px 20px;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);font-size:14px;line-height:1.6}
.empty-state{text-align:center;padding:48px 20px;border:1px dashed var(--color-border);border-radius:var(--radius-md)}
.empty-state p{color:var(--color-muted)}
@media(max-width:900px){.site-header{padding-inline:24px}.desktop-nav{display:none}.mobile-menu{display:inline-flex}.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.site-header{padding-inline:20px}.card-grid{grid-template-columns:1fr}.pill{white-space:normal}.case-card{min-height:190px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}}