:root {
  --navy: #1b2b4b;
  --canvas: #f6f8f7;
  --surface: #ffffff;
  --surface-muted: #f1f4f3;
  --line: #dce3e0;
  --line-strong: #c6d1cd;
  --ink: #14223a;
  --muted: #66716d;
  --green: #2d6a4f;
  --green-soft: #e9f2ed;
  --red: #b33a32;
  --radius: 14px;
  --control-radius: 8px;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--canvas); color: var(--ink); font-family: 'Open Sans', sans-serif; }
button, input { font: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }

.layout { min-height: 100vh; display: grid; grid-template-columns: 240px minmax(0, 1fr); }
.sidebar { position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; overflow: hidden; background: var(--navy); }
.sidebar-logo { min-height: 56px; padding: 0 20px; display: flex; align-items: center; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.logo-name { color: #fff; font-size: 15px; }
.sidebar-nav { flex: 1; min-height: 0; padding: 14px; overflow-y: auto; }
.sidebar-nav .nav-item { min-height: 38px; margin-bottom: 3px; padding: 7px 10px; display: flex; align-items: center; gap: 10px; border-radius: 8px; color: rgba(255, 255, 255, 0.58); font-size: 13px; }
.sidebar-nav .nav-item:hover { background: rgba(255, 255, 255, 0.07); color: rgba(255, 255, 255, 0.9); }
.sidebar-nav .nav-item.on { background: rgba(82, 183, 136, 0.18); color: #74c69d; }
.sidebar-foot { padding: 16px 20px; border-top: 1px solid rgba(255, 255, 255, 0.08); color: rgba(255, 255, 255, 0.46); font-size: 11px; line-height: 1.55; }

.main { min-width: 0; min-height: 100vh; }
.top-navbar { position: sticky; top: 0; z-index: 100; height: 56px; padding: 0 22px; display: flex; align-items: center; justify-content: center; border-bottom: 1px solid var(--line); background: var(--surface); }
#dynamicNavLinks { position: absolute; right: 174px; height: 100%; display: flex; align-items: center; gap: 18px; }
.top-navbar .nav-item { height: 100%; padding: 0 5px; display: flex; align-items: center; color: var(--muted); font-size: 13px; }
.top-navbar .nav-item:hover, .top-navbar .nav-item.on { color: var(--ink); }
.auth-actions { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.user-tag { position: absolute; left: 50%; transform: translateX(-50%); min-height: 34px; padding: 0 13px; display: flex; align-items: center; gap: 6px; border: 1px solid var(--line); border-radius: 999px; background: #fafbf9; color: var(--muted); font-size: 12px; font-weight: 600; }
.auth-btn { min-height: 36px; padding: 0 12px; display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); border-radius: var(--control-radius); background: var(--surface-muted); color: var(--green); font-size: 12px; font-weight: 600; }

.tool-workspace { width: min(100%, 1440px); margin: 0 auto; padding: 30px 38px 64px; }
.tool-intro { display: flex; align-items: flex-end; justify-content: space-between; gap: 28px; margin-bottom: 24px; }
.tool-eyebrow, .panel-kicker { margin: 0 0 7px; color: var(--green); font-family: 'IBM Plex Sans', sans-serif; font-size: 11px; font-weight: 700; text-transform: uppercase; }
.tool-intro h1 { margin: 0; font-family: 'Montserrat', sans-serif; font-size: clamp(30px, 3vw, 40px); line-height: 1.08; text-wrap: balance; }
.tool-description { max-width: 66ch; margin: 9px 0 0; color: var(--muted); font-size: 14px; line-height: 1.65; text-wrap: pretty; }
.sync-badge { min-height: 36px; padding: 0 12px; display: inline-flex; align-items: center; gap: 7px; flex: 0 0 auto; border: 1px solid #cfe0d7; border-radius: var(--control-radius); background: var(--green-soft); color: var(--green); font-size: 12px; font-weight: 600; }

.tool-summary-grid { margin-bottom: 14px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.summary-card { min-height: 114px; padding: 20px 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.summary-label { margin: 0; color: var(--muted); font-size: 11px; font-weight: 600; text-transform: uppercase; }
.summary-value { margin: 10px 0 3px; color: var(--ink); font-family: 'Montserrat', sans-serif; font-size: 24px; font-weight: 700; font-variant-numeric: tabular-nums; }
.summary-note { margin: 0; color: var(--muted); font-size: 12px; }

.tool-grid { display: grid; grid-template-columns: minmax(0, 1.32fr) minmax(320px, 0.68fr); gap: 14px; align-items: start; }
.tool-panel { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.panel-heading { margin-bottom: 22px; display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; }
.panel-heading h2, .result-panel h2 { margin: 0; font-family: 'Montserrat', sans-serif; font-size: 20px; line-height: 1.25; text-wrap: balance; }
.quiet-button { min-height: 36px; padding: 0 11px; display: inline-flex; align-items: center; gap: 6px; flex: 0 0 auto; border: 1px solid var(--line); border-radius: var(--control-radius); background: var(--surface-muted); color: var(--muted); font-size: 12px; }
.quiet-button:hover { border-color: var(--line-strong); color: var(--ink); }
.quiet-button:focus-visible, .tool-input:focus-visible, .auth-btn:focus-visible { outline: 3px solid rgba(45, 106, 79, 0.24); outline-offset: 2px; }

.tool-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 16px; }
.workspace-source-save { margin-top: 20px; padding-top: 16px; display: flex; align-items: center; justify-content: space-between; gap: 16px; border-top: 1px solid var(--line); }
.workspace-source-save p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.5; }
.workspace-source-save-button { min-height: 38px; padding: 0 13px; display: inline-flex; align-items: center; gap: 7px; flex: 0 0 auto; border: 0; border-radius: var(--control-radius); background: var(--green); color: #fff; font-size: 12px; font-weight: 700; }
.workspace-source-save-button:disabled { opacity: 0.55; cursor: wait; }
.tool-field { display: grid; gap: 7px; }
.tool-label { color: var(--ink); font-family: 'IBM Plex Sans', sans-serif; font-size: 12px; font-weight: 600; }
.input-shell { min-height: 44px; display: flex; align-items: center; border: 1px solid var(--line); border-radius: var(--control-radius); background: #fff; overflow: hidden; }
.input-shell:focus-within { border-color: var(--green); box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.1); }
.input-affix { padding: 0 0 0 12px; color: var(--muted); font-size: 13px; }
.input-affix.suffix { padding: 0 12px 0 0; }
.tool-input { width: 100%; min-width: 0; height: 42px; padding: 0 12px; border: 0; outline: 0; background: transparent; color: var(--ink); font-size: 14px; font-variant-numeric: tabular-nums; }
.tool-input:focus-visible { outline: none; }
.field-help { color: var(--muted); font-size: 11px; line-height: 1.45; }

.result-panel { background: #21384a; color: #fff; }
.result-panel .panel-kicker { color: #9fd0b5; }
.result-icon { width: 42px; height: 42px; margin-bottom: 18px; display: grid; place-items: center; border: 1px solid rgba(255, 255, 255, 0.13); border-radius: var(--control-radius); background: rgba(255, 255, 255, 0.07); color: #b8dec8; font-size: 19px; }
.result-value { display: block; margin: 18px 0 5px; font-family: 'Montserrat', sans-serif; font-size: clamp(32px, 4vw, 46px); font-weight: 700; line-height: 1; font-variant-numeric: tabular-nums; }
.result-copy { min-height: 44px; margin: 0; color: rgba(255, 255, 255, 0.67); font-size: 13px; line-height: 1.6; text-wrap: pretty; }
.result-track { height: 7px; margin: 22px 0; overflow: hidden; border-radius: 999px; background: rgba(255, 255, 255, 0.12); }
.result-track span { width: 0; height: 100%; display: block; border-radius: inherit; background: #74c69d; transition: transform 180ms ease-out; transform-origin: left; transform: scaleX(var(--track-progress, 0)); }
.result-details { margin: 0; display: grid; gap: 0; }
.result-detail { padding: 12px 0; display: flex; justify-content: space-between; gap: 18px; border-top: 1px solid rgba(255, 255, 255, 0.12); }
.result-detail dt { color: rgba(255, 255, 255, 0.59); font-size: 12px; }
.result-detail dd { margin: 0; color: #fff; font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; text-align: right; }
.tool-disclaimer { margin: 18px 0 0; display: flex; gap: 7px; color: rgba(255, 255, 255, 0.48); font-size: 10px; line-height: 1.5; }
.tool-toast { position: fixed; right: 22px; bottom: 22px; z-index: 400; padding: 11px 14px; border-radius: var(--control-radius); background: var(--ink); color: #fff; font-size: 12px; opacity: 0; pointer-events: none; transform: translateY(8px); transition: opacity 160ms ease-out, transform 160ms ease-out; }
.tool-toast.show { opacity: 1; transform: translateY(0); }

@media (max-width: 1080px) {
  .tool-workspace { padding-inline: 24px; }
  .tool-grid { grid-template-columns: 1fr; }
  #dynamicNavLinks { display: none; }
}
@media (max-width: 760px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .tool-workspace { padding: 24px 16px 48px; }
  .tool-intro { align-items: flex-start; flex-direction: column; gap: 14px; }
  .tool-summary-grid, .tool-form { grid-template-columns: 1fr; }
  .workspace-source-save { align-items: stretch; flex-direction: column; }
  .workspace-source-save-button { justify-content: center; }
  .panel-heading { flex-direction: column; }
  .tool-panel { padding: 20px; }
  .user-tag { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .result-track span, .tool-toast { transition: none; }
}