/* Document reset and application shell. Component styles live in css/ui/. */
    *{ box-sizing:border-box; }
    html{
      min-height:100%;
      background-color:var(--ui-color-canvas-alt);
    }
    body{
      margin:0;
      min-height:100vh;
      font-family: var(--ui-font-body);
      font-size: var(--ui-font-size-body);
      font-weight: var(--ui-font-weight-regular);
      line-height: var(--ui-line-height-normal);
      font-optical-sizing: auto;
      font-feature-settings: "liga" 1, "calt" 1;
      background-color:var(--ui-color-canvas-alt);
      background-image:
        radial-gradient(38rem 22rem at 8% -8%, rgba(0, 108, 146, .11), transparent 72%),
        radial-gradient(32rem 20rem at 94% 0%, rgba(var(--ui-primary-rgb), .055), transparent 74%),
        linear-gradient(180deg, var(--ui-color-canvas) 0%, var(--ui-color-canvas-alt) 100%);
      background-repeat:no-repeat;
      background-size:100% 100%;
      color: var(--ui-color-text);
      position: relative;
    }
    [data-theme="dark"] body{
      background-image:
        radial-gradient(38rem 22rem at 8% -8%, rgba(0, 188, 237, .10), transparent 72%),
        radial-gradient(32rem 20rem at 94% 0%, rgba(var(--ui-primary-rgb), .07), transparent 74%),
        linear-gradient(180deg, var(--ui-color-canvas) 0%, var(--ui-color-canvas-alt) 100%);
    }

    body::before{
      content:"";
      position: fixed;
      inset: 0;
      background: var(--ui-color-canvas);
      opacity: 0;
      pointer-events: none;
      z-index: 9999;
      transition: opacity .18s ease;
    }

    .page-shell{
      min-height: 100vh;
    }
    body.page-booting::before{
      opacity: 1;
    }
    body.page-ready::before{
      opacity: 0;
    }
    body.page-leaving::before{
      opacity: .18;
    }

    a{ color: inherit; text-decoration: none; }

    h1,h2,h3,h4{
      font-family: var(--ui-font-heading);
      font-weight: var(--ui-font-weight-semibold);
      line-height: var(--ui-line-height-tight);
      margin: 0 0 10px;
      letter-spacing: var(--ui-letter-spacing-heading);
    }

    header{
      position: sticky;
      top: 0;
      z-index: 10;
      padding: 14px 0 9px;
      border-bottom: 1px solid var(--ui-color-border);
      background: var(--ui-color-surface);
      box-shadow: var(--ui-shadow-header);
    }
    [data-theme="dark"] header{
      background: var(--ui-color-surface);
    }

    .container{
      max-width: 100%;
      width: 100%;
      margin: 0 auto;
      padding: 0 var(--ui-page-gutter);
    }

    .topbar{
      display:flex;
      align-items:center;
      gap:12px;
    }

    .brand{
      display:flex;
      align-items:center;
      gap:10px;
      min-width: 0;
      flex: 0 1 auto;
      max-width: none;
    }

    .brand-link{
      display:flex;
      align-items:center;
      gap:10px;
      min-width:0;
      flex: 0 1 auto;
      flex-wrap: nowrap;
    }

    .dot{
      width:10px; height:10px; border-radius:999px;
      background: var(--ui-color-primary);
      box-shadow: 0 0 0 5px rgba(var(--ui-primary-rgb), .18);
    }

    .brand b{ font-size: var(--ui-font-size-subsection); letter-spacing:var(--ui-letter-spacing-heading); }
    .theme-toggle{
      display:flex;
      align-items:center;
      gap:6px;
      margin-left: 0;
      padding-top: 0;
      flex: 0 0 auto;
    }
    .header-utility{
      display:flex;
      align-items:center;
      gap:10px;
      margin-left: 10px;
      flex: 0 0 auto;
    }
    .theme-switch{
      position: relative;
      width: 40px;
      height: 22px;
      display: inline-block;
    }
    .theme-switch input{ display:none; }
    .theme-slider{
      position:absolute;
      inset:0;
      background: var(--ui-color-surface-raised);
      border: 1px solid var(--ui-color-border-strong);
      border-radius: 999px;
      cursor: pointer;
      transition: background .2s ease, border-color .2s ease;
    }
    .theme-slider::after{
      content:"";
      position:absolute;
      top:2px;
      left:2px;
      width:16px;
      height:16px;
      border-radius:999px;
      background: var(--ui-color-text);
      transition: transform .2s ease;
    }
    .theme-switch input:checked + .theme-slider::after{
      transform: translateX(18px);
    }
    .role-pill{
      font-size: var(--ui-font-size-caption);
      color: var(--ui-color-text-muted-strong);
      border: 1px solid var(--ui-color-border-strong);
      padding: 2px 7px;
      border-radius: 999px;
      background: var(--ui-color-surface-muted);
    }

    .nav a{
      font-size: var(--ui-font-size-secondary);
      color: var(--ui-color-text-muted-strong);
      border: 1px solid var(--ui-color-border);
      padding: 6px 9px;
      border-radius: var(--ui-radius-control);
      background: var(--ui-color-surface);
      transition: all .2s ease;
      box-shadow: var(--ui-shadow-control);
      font-family: var(--ui-font-heading);
      letter-spacing: normal;
      font-weight: var(--ui-font-weight-semibold);
      min-height: var(--ui-control-height-compact);
      line-height: var(--ui-line-height-tight);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      white-space: nowrap;
      flex: 0 0 auto;
    }
    .nav a:hover{
      color: var(--ui-color-text);
      border-color: rgba(210,9,0,.4);
      background: var(--ui-color-surface-raised);
      box-shadow: var(--ui-shadow-raised);
      transform: translateY(-1px);
    }

    .nav-action-form{
      margin: 0;
      display: flex;
      align-items: center;
    }

    .nav-notification-shell{
      position: relative;
      display: inline-flex;
      align-items: center;
    }

    .nav-notification-btn{
      position: relative;
      min-width: 38px;
      width: 38px;
      height: var(--ui-control-height-compact);
      padding: 0;
      border: 1px solid var(--ui-color-border);
      border-radius: var(--ui-radius-control);
      background: var(--ui-color-surface);
      color: var(--ui-color-text-muted-strong);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      box-shadow: var(--ui-shadow-control);
    }

    .nav-notification-btn:hover{
      color: var(--ui-color-text);
      border-color: rgba(210,9,0,.4);
      background: var(--ui-color-surface-raised);
      box-shadow: var(--ui-shadow-raised);
      transform: translateY(-1px);
    }

    .nav-notification-icon{
      width: 17px;
      height: 17px;
      fill: currentColor;
    }

    .nav-notification-badge{
      position: absolute;
      top: -5px;
      right: -5px;
      min-width: 18px;
      height: 18px;
      padding: 0 4px;
      border-radius: 999px;
      background: #d20900;
      color: #fff;
      font-size: var(--ui-font-size-caption);
      font-weight: var(--ui-font-weight-bold);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 2px solid var(--ui-color-canvas);
      box-sizing: border-box;
    }

    .notification-popover{
      position: absolute;
      top: calc(100% + 8px);
      right: 0;
      width: min(420px, calc(100vw - 24px));
      z-index: 40;
    }

    main{
      max-width: 100%;
      width: 100%;
      margin: 0 auto;
      padding: 20px var(--ui-page-gutter) 40px;
      position: relative;
      z-index: 1;
    }

    @media (prefers-reduced-motion: reduce){
      body::before{
        transition: none;
      }
      body.page-booting::before,
      body.page-ready::before,
      body.page-leaving::before{
        opacity: 0;
      }
    }
    .brand-logo{
      width: 156px;
      max-width: 100%;
      height: auto;
      border-radius: 6px;
      border: 1px solid var(--ui-color-border);
      background: #fff;
      padding: 0;
    }
    .brand-logo-dark{
      display: none;
    }
    [data-theme="dark"] .brand-logo-light{
      display: none;
    }
    [data-theme="dark"] .brand-logo-dark{
      display: block;
      border-color: transparent;
      background: transparent;
      padding: 0;
    }
    .brand-copy{
      display:flex;
      flex-direction:row;
      align-items:center;
      gap:8px;
      min-width:0;
      flex-wrap: nowrap;
    }
    .brand-copy b{
      font-family: var(--ui-font-heading);
      font-size: var(--ui-font-size-subsection);
      letter-spacing: var(--ui-letter-spacing-heading);
      line-height: var(--ui-line-height-tight);
      white-space: nowrap;
    }
    .brand-meta{
      display:flex;
      align-items:center;
      gap:4px;
      flex-wrap:nowrap;
      margin-top: 0;
      white-space: nowrap;
    }
    /* Use full viewport width for all pages (keep only inner padding gutters). */
    .page{ max-width: none; }
    .nav a{
      min-height: 34px;
      padding: 7px 11px;
    }
    .nav a:hover{
      border-color: rgba(var(--ui-primary-rgb),.52);
      background: rgba(var(--ui-primary-rgb),.10);
      color: var(--ui-color-primary);
    }
    .nav form.ui-form--inline{ margin:0; }

    @media (max-width: 700px){
      .brand{ width: 100%; align-items:flex-start; }
      .brand-link{ width: auto; flex: 1 1 auto; }
      .brand-copy{
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
      }
      .brand-meta{
        display: none;
      }
      .header-utility{ margin-left:auto; }
      .theme-toggle{ margin-left:0; }
      .brand-logo{ width: 124px; }
    }

/* Echo typography roles. */
    .ui-title{
      margin: 0 0 var(--ui-space-3);
      color: var(--ui-color-text);
      font-family: var(--ui-font-heading);
      font-weight: var(--ui-font-weight-semibold);
      line-height: var(--ui-line-height-tight);
      letter-spacing: var(--ui-letter-spacing-heading);
      overflow-wrap: anywhere;
    }
    .ui-title--page{ font-size:var(--ui-font-size-page); }
    .ui-title--section{ font-size:var(--ui-font-size-section); }
    .ui-title--subsection{ font-size:var(--ui-font-size-subsection); font-weight:var(--ui-font-weight-bold); }
    .ui-text{ font-size:var(--ui-font-size-body); line-height:var(--ui-line-height-normal); }
    .ui-text--secondary{ color:var(--ui-color-text-muted); font-size:var(--ui-font-size-secondary); line-height:var(--ui-line-height-normal); }
    .ui-text--caption{ color:var(--ui-color-text-muted); font-size:var(--ui-font-size-caption); line-height:var(--ui-line-height-snug); }
    .ui-text--table{ font-size:var(--ui-font-size-table); line-height:var(--ui-line-height-normal); }
    .ui-text--italic{ font-style:italic; }
    .ui-metric{ font-size:var(--ui-font-size-display); font-weight:var(--ui-font-weight-bold); line-height:var(--ui-line-height-tight); font-variant-numeric:tabular-nums; }
    .ui-code{ font-family:var(--ui-font-mono); font-size:var(--ui-font-size-table); line-height:var(--ui-line-height-normal); }
    .ui-number{ font-variant-numeric:tabular-nums; }
    .ui-prose{ max-width:var(--ui-prose-width); line-height:var(--ui-line-height-relaxed); }
    .ui-weight--regular{ font-weight:var(--ui-font-weight-regular); }
    .ui-weight--medium{ font-weight:var(--ui-font-weight-medium); }
    .ui-weight--semibold{ font-weight:var(--ui-font-weight-semibold); }
    .ui-weight--bold{ font-weight:var(--ui-font-weight-bold); }
    .ui-leading--tight{ line-height:var(--ui-line-height-tight); }
    .ui-leading--snug{ line-height:var(--ui-line-height-snug); }
    .ui-leading--normal{ line-height:var(--ui-line-height-normal); }
    .ui-leading--relaxed{ line-height:var(--ui-line-height-relaxed); }