/* choose-machine.css — Single-page chooser (aligned to core.css) */
/* ==========================================================================
   Design tokens (map to core.css with fallbacks)
   ========================================================================== */
   :root {
    /* Colors (prefer core.css tokens) */
    --cm-bg: var(--clr-bg, #ffffff);
    --cm-text: var(--clr-text, #1f2937);
    --cm-muted: var(--clr-muted, #6b7280);
    --cm-primary: var(--clr-primary, #2563eb);
    --cm-secondary: var(--clr-secondary, #10b981);
    --cm-border: var(--clr-border, #e5e7eb);
  
    /* Radii & shadows (prefer core tokens) */
    --cm-radius: var(--radius-lg, 1rem);
    --cm-radius-sm: var(--radius-md, 0.5rem);
  
    --cm-shadow-xs: var(--shadow-sm, 0 2px 4px rgba(0,0,0,.05));
    --cm-shadow-sm: var(--shadow-md, 0 4px 6px rgba(0,0,0,.10));
    --cm-shadow-lg: var(--shadow-lg, 0 15px 25px rgba(0,0,0,.06));
  
    /* Motion */
    --cm-ease: .2s ease;
  }
  
  :root[data-theme="dark"] {
    /* In dark mode core.css flips these; we inherit automatically.
       The lines below ensure safe fallbacks if core.css isn't present. */
    --cm-bg: var(--clr-bg, #0f172a);
    --cm-text: var(--clr-text, #e2e8f0);
    --cm-muted: var(--clr-muted, #9aa4b2);
    --cm-border: var(--clr-border, #374151);
  }
  
  /* Basic containment */
  * { box-sizing: border-box; }
  html, body { height: 100%; }
  body {
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    background: var(--cm-bg);
    color: var(--cm-text);
    line-height: 1.6;
  }
  
  /* ==========================================================================
     Header / Nav
     ========================================================================== */
  .cm-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: .9rem 1.125rem;
    border-bottom: 1px solid var(--cm-border);
    background: var(--cm-bg);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--cm-shadow-xs);
  }
  
  .cm-brand { font-weight: 800; letter-spacing: .2px; font-size: clamp(1rem, 2.2vw, 1.125rem); }
  .cm-brand .brand-primary { color: var(--cm-primary); }
  .cm-brand .brand-secondary { color: var(--cm-text); margin-left: .2ch; }
  
  .cm-links { display: flex; gap: .9rem; align-items: center; flex-wrap: wrap; }
  .cm-links a {
    text-decoration: none;
    color: var(--cm-muted);
    transition: color var(--cm-ease);
  }
  .cm-links a:hover,
  .cm-links a:focus {
    color: var(--cm-primary);
    text-decoration: underline;
  }
  
  .cm-nav .theme-toggle {
    background: transparent;
    border: 1px solid var(--cm-border);
    color: var(--cm-muted);
    border-radius: var(--radius-md, 0.5rem);
    padding: .45rem .6rem;
    cursor: pointer;
  }
  
  /* ==========================================================================
     Buttons (piggyback on core .btn, add light scoping polish)
     ========================================================================== */
  .cm .btn { /* scope to a .cm wrapper if desired; safe to apply globally too */
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md, 0.5rem);
    font-weight: 600;
    padding: .65rem .9rem;
    text-decoration: none;
    transition: background var(--cm-ease), transform var(--cm-ease), box-shadow var(--cm-ease);
    border: 1px solid var(--cm-border);
    cursor: pointer;
    color: var(--cm-text);
    background: transparent;
  }
  .cm .btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--cm-primary) 25%, transparent);
  }
  .cm .btn:active { transform: translateY(0); box-shadow: var(--cm-shadow-xs); }
  
  .cm .btn--primary {
    background: var(--cm-primary);
    color: #fff;
    border-color: color-mix(in srgb, var(--cm-primary) 25%, transparent);
  }
  .cm .btn--primary:hover { transform: translateY(-1px); box-shadow: var(--cm-shadow-sm); }
  
  .cm .btn--secondary {
    background: color-mix(in srgb, var(--cm-secondary) 14%, transparent);
    color: var(--cm-text);
    border-color: color-mix(in srgb, var(--cm-secondary) 35%, transparent);
  }
  .cm .btn--ghost { background: transparent; }
  .cm .btn--small { padding: .45rem .7rem; font-size: .9rem; }
  
  /* Icon spacing helpers */
  .cm .btn i:last-child { margin-left: .35rem; }
  .cm .btn i:first-child { margin-right: .35rem; }
  
  /* ==========================================================================
     Container & Hero
     ========================================================================== */
  .cm-container { max-width: 1100px; margin: 0 auto; padding: 24px 16px 48px; }
  .cm-hero { margin-top: .25rem; margin-bottom: 1.2rem; }
  .cm-hero h1 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); margin: 0 0 .25rem; }
  .cm-hero .lead { color: var(--cm-muted); margin: 0 0 .8rem; }
  
  /* Quick scenarios */
  .cm-quick-scenarios {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: .65rem;
  }
  .cm-scenario {
    display: flex; gap: .6rem; align-items: center; padding: .7rem .8rem;
    border: 1px solid var(--cm-border);
    border-radius: var(--cm-radius-sm);
    background: color-mix(in srgb, var(--cm-secondary) 6%, var(--cm-bg));
    cursor: pointer;
    transition: box-shadow var(--cm-ease), border-color var(--cm-ease), transform var(--cm-ease);
  }
  .cm-scenario i { font-size: 1.2rem; color: var(--cm-secondary); }
  .cm-scenario strong { display: block; }
  .cm-scenario span { color: var(--cm-muted); font-size: .9rem; }
  .cm-scenario:hover { box-shadow: var(--cm-shadow-sm); transform: translateY(-1px); }
  .cm-scenario:focus-visible { outline: 2px dashed var(--cm-secondary); outline-offset: 3px; }
  
  /* ==========================================================================
     Wizard Shell
     ========================================================================== */
  .cm-wizard {
    margin-top: 1rem;
    border: 1px solid var(--cm-border);
    border-radius: var(--cm-radius);
    padding: 1rem;
    box-shadow: var(--cm-shadow-lg);
    background: var(--cm-bg);
  }
  
  .cm-steps-head {
    display:flex; justify-content:space-between; align-items:center; gap: 1rem; flex-wrap: wrap;
  }
  .cm-steps-head h2 { margin: 0; font-size: clamp(1.1rem, 2.4vw, 1.3rem); }
  
  /* Progress */
  .cm-progress { display:flex; align-items:center; gap: .6rem; width: 340px; max-width: 100%; }
  .cm-progress-bar {
    flex:1; height: 8px; border-radius: 999px; overflow: hidden;
    background: linear-gradient(180deg, #e9eef5, #e3e8ef);
    border: 1px solid color-mix(in srgb, var(--cm-primary) 10%, var(--cm-border));
  }
  .cm-progress-bar span {
    display: block; height: 100%; width: 0%;
    background: linear-gradient(90deg, var(--cm-primary), var(--cm-secondary));
    transition: width .25s ease;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,.35);
  }
  .cm-progress-steps { display:flex; gap: .3rem; }
  .cm-progress-steps .dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: color-mix(in srgb, var(--cm-text) 35%, transparent);
    opacity: .65;
  }
  .cm-progress-steps .dot.done { background: var(--cm-primary); opacity: 1; }
  
  /* Steps */
  .cm-step { margin-top: .8rem; }
  .cm-step h3 {
    margin: 0 0 .6rem; font-size: 1.05rem;
    display:flex; align-items:center; gap:.5rem; color: var(--cm-primary);
  }
  .step-badge {
    display:inline-grid; place-items:center; width: 26px; height: 26px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--cm-primary) 12%, transparent);
    color: var(--cm-primary); font-weight: 800;
    border: 1px solid color-mix(in srgb, var(--cm-primary) 35%, transparent);
  }
  
  /* Inputs */
  label.block { display:block; }
  label.block select,
  label.block input[type="number"],
  .roi-form input[type="number"] {
    width: 100%;
    padding: .65rem .7rem;
    border: 1px solid var(--cm-border);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--cm-bg);
    color: var(--cm-text);
    transition: border var(--cm-ease), box-shadow var(--cm-ease);
  }
  label.block select:focus,
  label.block input[type="number"]:focus,
  .roi-form input[type="number"]:focus {
    outline: none;
    border-color: var(--cm-primary);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--cm-primary) 20%, transparent);
  }
  label.block + label.block { margin-top: .6rem; }
  
  fieldset.block {
    border: 1px dashed var(--cm-border);
    border-radius: var(--radius-md, 0.5rem);
    padding: .6rem .7rem;
  }
  fieldset.block legend { padding: 0 .35rem; color: var(--cm-muted); }
  
  .chips { display:flex; gap: .5rem; flex-wrap: wrap; }
  .chips label {
    display: inline-flex; gap: .35rem; align-items: center;
    padding: .35rem .6rem; border:1px solid var(--cm-border);
    border-radius: 999px; background: transparent; cursor: pointer;
    transition: background var(--cm-ease), border-color var(--cm-ease);
  }
  .chips input { accent-color: var(--cm-primary); }
  
  /* Simple grids */
  .grid.two { display: grid; grid-template-columns: repeat(2, 1fr); gap: .7rem; }
  @media (max-width: 720px) { .grid.two { grid-template-columns: 1fr; } }
  
  /* Controls */
  .cm-controls { display:flex; align-items:center; gap: .5rem; margin-top: .8rem; }
  .cm-controls .spacer { flex:1; }
  
  /* ==========================================================================
     Results
     ========================================================================== */
  .cm-results { margin-top: 1.2rem; }
  .cm-results-head {
    display:flex; justify-content:space-between; align-items:center;
    gap: .75rem; flex-wrap: wrap;
  }
  .cm-results-head h2 { margin: 0; font-size: clamp(1.1rem, 2.4vw, 1.25rem); }
  .cm-results-actions { display:flex; gap:.5rem; flex-wrap: wrap; }
  
  .cm-summary-strip { display:flex; gap:.4rem; flex-wrap: wrap; margin: .6rem 0 .8rem; }
  .chip {
    display:inline-flex; align-items:center; gap:.4rem;
    padding:.35rem .55rem; border:1px solid var(--cm-border);
    border-radius: 999px; color: var(--cm-muted); background: transparent;
    font-size: .9rem;
  }
  
  .cm-rec-list {
    display:grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: .8rem;
  }
  .cm-rec {
    border:1px solid var(--cm-border);
    border-radius: var(--cm-radius-sm);
    padding: .8rem .9rem;
    background: var(--cm-bg);
    box-shadow: var(--cm-shadow-sm);
    transition: box-shadow var(--cm-ease), border-color var(--cm-ease), transform var(--cm-ease);
  }
  .cm-rec:hover { box-shadow: var(--cm-shadow-lg); transform: translateY(-1px); }
  
  .rec-head .rec-top { display:flex; justify-content:space-between; align-items:center; gap:.5rem; }
  .rec-score {
    font-weight: 700; color: var(--cm-primary);
    border:1px solid color-mix(in srgb, var(--cm-primary) 35%, transparent);
    border-radius: .5rem; padding:.1rem .4rem; font-size: .9rem;
  }
  .rec-tags { display:flex; gap:.35rem; flex-wrap: wrap; margin-top:.35rem; }
  .tag {
    font-size:.78rem; border:1px solid var(--cm-border);
    padding:.12rem .4rem; border-radius: 999px; color: var(--cm-muted);
  }
  
  .rec-note {
    margin:.45rem 0; padding:.5rem; border:1px dashed var(--cm-border);
    border-radius: .5rem; color: var(--cm-muted);
  }
  
  .rec-body h4 { margin:.25rem 0 .4rem; font-size: 1rem; }
  .rec-links { margin:0; padding-left: 1.1rem; }
  .rec-links li { margin:.25rem 0; }
  .rec-links a { color: var(--cm-primary); text-decoration: none; }
  .rec-links a:hover, .rec-links a:focus { text-decoration: underline; }
  
  .rec-actions { display:flex; gap:.45rem; flex-wrap: wrap; margin-top:.45rem; }
  .rec-why { display:none; margin-top:.45rem; border-top:1px dashed var(--cm-border); padding-top:.45rem; color: var(--cm-muted); }
  .rec-why.open { display:block; }
  .rec-why ul { margin: .2rem 0 0; padding-left: 1.1rem; }
  
  /* ROI & Tips */
  .cm-roi {
    margin-top: 1rem; border:1px solid var(--cm-border);
    border-radius: var(--cm-radius-sm); padding:.8rem .9rem; background: var(--cm-bg);
  }
  .roi-form {
    display:grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap:.55rem; margin-bottom:.35rem;
  }
  .roi-form .hint { color: var(--cm-muted); font-size: .85rem; }
  .roi-out { display:flex; gap:1rem; flex-wrap: wrap; }
  
  .cm-tips {
    margin-top: 1rem; border:1px solid var(--cm-border);
    border-radius: var(--cm-radius-sm); padding:.8rem .9rem; background: var(--cm-bg);
  }
  .cm-tips ul { margin:.3rem 0 0; padding-left: 1.1rem; }
  .cm-tips li { margin:.25rem 0; }
  
  /* ==========================================================================
     Footer
     ========================================================================== */
  .cm-footer {
    text-align:center; border-top:1px solid var(--cm-border);
    padding: 24px 16px; margin-top: 32px;
  }
  .cm-footer small { display:block; color: var(--cm-muted); margin-bottom: .2rem; }
  .cm-footer nav a { color: var(--cm-muted); text-decoration: none; margin: 0 .6rem; }
  .cm-footer nav a:hover { color: var(--cm-primary); text-decoration: underline; }
  
  /* ==========================================================================
     Toast
     ========================================================================== */
  .cm-toast {
    position: fixed; left: 1rem; bottom: 1rem; z-index: 10000;
    background: color-mix(in srgb, var(--cm-bg) 10%, #0f172a);
    color: #fff; padding: .6rem .8rem;
    border-radius: var(--radius-md, 0.5rem);
    font-size: .9rem; opacity: 0; transform: translateY(8px);
    transition: opacity var(--cm-ease), transform var(--cm-ease);
    pointer-events: none;
    box-shadow: var(--cm-shadow-sm);
  }
  .cm-toast.show { opacity: 1; transform: translateY(0); }
  
  /* ==========================================================================
     Accessibility & micro-interactions
     ========================================================================== */
  .cm a, .cm button, .cm input, .cm select {
    -webkit-tap-highlight-color: transparent;
  }
  .cm [tabindex]:focus-visible, .cm a:focus-visible, .cm button:focus-visible {
    outline: 2px dashed var(--cm-secondary);
    outline-offset: 2px;
  }
  .cm .sr-only {
    position:absolute !important; width:1px; height:1px; padding:0; margin:-1px;
    overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0;
  }
  
  @media (prefers-reduced-motion: reduce) {
    * { transition: none !important; animation: none !important; }
  }
  
  /* ==========================================================================
     Responsiveness tweaks
     ========================================================================== */
  @media (max-width: 1100px) {
    .cm-wizard { box-shadow: var(--cm-shadow-sm); }
  }
  @media (max-width: 768px) {
    .cm-nav { padding: .75rem 1rem; }
    .cm-hero h1 { font-size: clamp(1.6rem, 5vw, 2.1rem); }
  }
  
  /* ==========================================================================
     Print
     ========================================================================== */
  @media print {
    .cm-nav, .cm-hero, .cm-wizard, .cm-results-actions, .cm-tips { display: none !important; }
    .cm-container { max-width: none; }
    .cm-rec { break-inside: avoid; }
  }
  

  /* --- APPEND: visual toggles, refined surfaces, alignment/overflow fixes --- */

/* Surfaces tuned for light/dark for elegant, low-contrast backgrounds */
:root { --cm-surface: color-mix(in srgb, var(--cm-bg) 96%, #ffffff); }
:root[data-theme="dark"] { --cm-surface: color-mix(in srgb, var(--cm-bg) 88%, #000000); }

/* Apply surface to key cards/blocks */
.cm-wizard,
.cm-rec,
.cm-roi,
.cm-tips,
.cm-scenario { background: var(--cm-surface); }

/* Make media and long text never overflow cards/containers */
img, svg, video { max-width: 100%; height: auto; display: block; }
.cm-container, .cm-wizard, .cm-results, .cm-rec { overflow-wrap: anywhere; }

/* Progress & header: prevent flex overflow on narrow screens */
.cm-steps-head { min-width: 0; }
.cm-steps-head h2 { flex: 1 1 auto; min-width: 0; }
.cm-progress { flex: 1 1 280px; min-width: 0; }

/* Results toolbar and wizard controls: wrap cleanly with no overflow */
.cm-results-actions,
.cm-controls { flex-wrap: wrap; }
.cm-controls .btn span,
.cm-results-actions .btn span { white-space: nowrap; }

/* Subtle progress bar base that adapts to theme */
.cm-progress-bar {
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--cm-bg) 92%, #fff),
    color-mix(in srgb, var(--cm-bg) 86%, #000)
  );
  border-color: color-mix(in srgb, var(--cm-primary) 12%, var(--cm-border));
}

/* Card polish & containment */
.cm-rec { contain: content; overflow: hidden; }
.cm-rec:hover { transform: translateY(-2px); }

/* ---------- CHIP TOGGLES (checkbox/radio) ---------- */
/* Hide native boxes visually but keep accessible */
.chips label {
  position: relative;
  display: inline-flex;
  gap: .45rem;
  align-items: center;
  padding: .42rem .7rem;
  border: 1px solid var(--cm-border);
  border-radius: 999px;
  background: transparent;
  color: var(--cm-text);
  user-select: none;
  transition: background var(--cm-ease), border-color var(--cm-ease), color var(--cm-ease), box-shadow var(--cm-ease);
}
.chips label input[type="checkbox"],
.chips label input[type="radio"]{
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  margin: 0;
  appearance: none;
}

/* Focus ring on the whole pill when the input is focused */
.chips label:has(input:focus-visible) {
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--cm-primary) 25%, transparent);
}

/* Selected state */
@supports selector(label:has(input:checked)) {
  .chips label:has(input:checked) {
    background: color-mix(in srgb, var(--cm-primary) 18%, var(--cm-surface));
    border-color: color-mix(in srgb, var(--cm-primary) 45%, var(--cm-border));
    color: color-mix(in srgb, var(--cm-text) 92%, #fff);
  }
  .chips label:has(input:checked)::after{
    content: "✓";
    font-weight: 700;
    font-size: .9rem;
    line-height: 1;
  }
}

/* Disabled state */
.chips label:has(input:disabled){
  opacity: .6;
  cursor: not-allowed;
}

/* ---------- THEME TOGGLE POLISH ---------- */
#themeToggle.theme-toggle{
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .35rem .6rem;
  border-radius: 999px;
  border: 1px solid var(--cm-border);
  background: var(--cm-surface);
  color: var(--cm-text);
  transition: transform var(--cm-ease), box-shadow var(--cm-ease), background var(--cm-ease), border-color var(--cm-ease);
}
#themeToggle.theme-toggle i{
  display: grid;
  place-items: center;
  inline-size: 1.35rem;
  block-size: 1.35rem;
}
#themeToggle.theme-toggle:hover{
  transform: translateY(-1px);
  box-shadow: var(--cm-shadow-sm);
  border-color: color-mix(in srgb, var(--cm-primary) 30%, var(--cm-border));
}

/* ---------- NAV CONTAINMENT SAFETY (no overflow on mobile menus) ---------- */
header.nav .nav__links{
  max-width: 100vw;
  overscroll-behavior: contain;
}
header.nav .nav__links.open{
  max-height: calc(100vh - 64px);
  overflow: auto;
}

/* ---------- FORM INPUT SURFACES ---------- */
label.block select,
label.block input[type="number"],
.roi-form input[type="number"]{
  background: var(--cm-surface);
  border-color: color-mix(in srgb, var(--cm-border) 80%, var(--cm-text) 20%);
}

/* ---------- SCENARIO BUTTONS (cleaner selected/active feedback) ---------- */
.cm-scenario{
  border-color: color-mix(in srgb, var(--cm-secondary) 22%, var(--cm-border));
}
.cm-scenario:active{
  transform: translateY(0);
  box-shadow: var(--cm-shadow-xs);
}

/* ---------- SMALL RESPONSIVE TWEAKS ---------- */
@media (max-width: 540px){
  .cm-results-head { align-items: flex-start; }
  .cm-summary-strip { margin-top: .4rem; }
  .cm-controls .btn { flex: 1 1 auto; }
  .cm-controls .spacer { display: none; }
}