/* Stepped lead form: pick a project type on cards, then budget + timing chips, then the contact details, with a
   segmented progress bar on top; every forward step rises 8px into place. Then a local "sent" panel.
   Measured on DUNA's contact form (global.css .v2-form*): step rise translateY(8px) -> none over .42s on the house
   ease cubic-bezier(.22,1,.36,1), forward only (going back just swaps); progress segments 3px, radius 3px, gap 6px,
   colour .3s; cards 1px line, radius 10px, padding 18px, pressed = solid accent; chips pill 11px 16px; fields 52px,
   radius 8px, focus = border + inset 1px shadow in ink (no size change). Colours here are neutral stand-ins. */
.slf {
  --slf-rise: 8px;                          /* forward step comes up from this far below */
  --slf-dur: .42s;
  --slf-ease: cubic-bezier(.22, 1, .36, 1);
  --slf-ink: #1d2320;                       /* text, done segments, focus line */
  --slf-ink-2: #646b66;                     /* labels, hints */
  --slf-line: rgba(29, 35, 32, .18);        /* hairlines, empty segments */
  --slf-accent: #1d2320;                    /* pressed card/chip, buttons, check */
  --slf-accent-ink: #f1efe6;                /* text on the accent */
  --slf-field-bg: transparent;
  --slf-seg-h: 3px;
  --slf-seg-gap: 6px;
  --slf-seg-dur: .3s;                       /* segment colour change */
  --slf-fade: .2s;                          /* card / chip / field colour changes */
  --slf-radius-card: 10px;
  --slf-radius-field: 8px;
  --slf-gap: 20px;
  --slf-font: ui-sans-serif, system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --slf-font-accent: ui-serif, Georgia, "Times New Roman", serif;  /* the italic word in the sent title */
  position: relative; display: flex; flex-direction: column; gap: var(--slf-gap); margin: 0;
  color: var(--slf-ink); font-family: var(--slf-font);
}
.slf *, .slf *::before, .slf *::after { box-sizing: border-box; }
.slf [hidden] { display: none !important; }

/* ---- progress: "STEP 1 / 3 ... Project type" over N segments ---- */
.slf__progress { display: flex; flex-direction: column; gap: 10px; margin-bottom: 8px; }
.slf__progress-row { display: flex; justify-content: space-between; gap: 12px; color: var(--slf-ink-2);
  font: 400 12px/1 var(--slf-font); letter-spacing: .08em; text-transform: uppercase; }
.slf__bars { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: var(--slf-seg-gap); }
.slf__bars span { height: var(--slf-seg-h); border-radius: 3px; background: var(--slf-line); transition: background-color var(--slf-seg-dur); }
.slf__bars span.is-done { background: var(--slf-ink); }

/* ---- a step; the forward rise ---- */
.slf__step { display: flex; flex-direction: column; gap: var(--slf-gap); }
@media (prefers-reduced-motion: no-preference) {
  .slf[data-slf-dir="forward"] .slf__step.is-current { animation: slf-rise var(--slf-dur) var(--slf-ease) both; }
}
@keyframes slf-rise { from { transform: translateY(var(--slf-rise)); } to { transform: none; } }

.slf__head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; }
.slf__title { margin: 0; color: var(--slf-ink); font: 600 clamp(26px, 2.6vw, 34px)/1.15 var(--slf-font); letter-spacing: -.015em; }
.slf__back { display: inline-flex; align-items: center; gap: .3em; padding: 9px 12px; border: 1px solid var(--slf-line);
  border-radius: 1000px; background: none; color: var(--slf-ink); font: 400 13px/1 var(--slf-font); cursor: pointer; }
.slf__back:hover { border-color: var(--slf-ink); }

/* ---- step 1: project type cards ---- */
.slf__kinds { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 10px; }
.slf__kind { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; padding: 18px;
  border: 1px solid var(--slf-line); border-radius: var(--slf-radius-card); background: none; color: var(--slf-ink);
  font: inherit; text-align: left; cursor: pointer;
  transition: background-color var(--slf-fade), color var(--slf-fade), border-color var(--slf-fade); }
.slf__kind:hover { border-color: var(--slf-ink); }
.slf__kind[aria-pressed="true"] { border-color: var(--slf-accent); background: var(--slf-accent); color: var(--slf-accent-ink); }
.slf__kind-text { display: flex; flex-direction: column; gap: 6px; }
.slf__kind-text strong { font: 600 17px/1.25 var(--slf-font); }
.slf__kind-text small { font: 400 14px/1.4 var(--slf-font); opacity: .75; }
.slf__kind-icon { flex-shrink: 0; display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px;
  border: 1px solid; border-radius: 1000px; }
.slf__kind-icon svg { width: 14px; height: 14px; }
.slf__kind-icon .slf__tick { display: none; }
.slf__kind[aria-pressed="true"] .slf__tick { display: block; }
.slf__kind[aria-pressed="true"] .slf__plus { display: none; }

/* ---- step 2: chip groups ---- */
.slf__group { margin: 0; padding: 0; border: 0; min-width: 0; }
.slf__group legend { float: left; width: 100%; margin: 0 0 10px; padding: 0; color: var(--slf-ink-2); font: 400 13px/1 var(--slf-font); }
.slf__chips { clear: both; display: flex; flex-wrap: wrap; gap: 8px; }
.slf__chip { padding: 11px 16px; border: 1px solid var(--slf-line); border-radius: 1000px; background: none; color: var(--slf-ink);
  font: 400 14px/1 var(--slf-font); cursor: pointer;
  transition: background-color var(--slf-fade), color var(--slf-fade), border-color var(--slf-fade); }
.slf__chip:hover { border-color: var(--slf-ink); }
.slf__chip[aria-pressed="true"] { border-color: var(--slf-accent); background: var(--slf-accent); color: var(--slf-accent-ink); }

/* ---- step 3: fields ---- */
.slf__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr)); gap: 16px; }
.slf__field { display: flex; flex-direction: column; gap: 8px; color: var(--slf-ink-2); font: 400 13px/1 var(--slf-font); }
.slf__control { width: 100%; height: 52px; padding: 0 16px; border: 1px solid var(--slf-line); border-radius: var(--slf-radius-field);
  outline: none; background: var(--slf-field-bg); color: var(--slf-ink); font: 400 16px/1.4 var(--slf-font);
  transition: border-color var(--slf-fade), box-shadow var(--slf-fade); }
textarea.slf__control { height: auto; min-height: 140px; padding: 14px 16px; resize: vertical; }
.slf__control::placeholder { color: var(--slf-ink-2); opacity: 1; }
.slf__control:focus-visible, .slf__control[aria-invalid="true"] { border-color: var(--slf-ink); box-shadow: inset 0 0 0 1px var(--slf-ink); }
.slf__error { color: var(--slf-ink); font: 400 12px/1.3 var(--slf-font); }
.slf__alert { margin: 0; padding: 12px 16px; border-left: 2px solid var(--slf-ink);
  background: color-mix(in srgb, var(--slf-ink) 6%, transparent); color: var(--slf-ink); font: 400 14px/1.5 var(--slf-font); }

/* ---- step foot + buttons ---- */
.slf__foot { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; margin-top: 4px; }
.slf__hint { margin: 0; color: var(--slf-ink-2); font: 400 14px/1.5 var(--slf-font); }
.slf__next, .slf__submit { display: inline-flex; align-items: center; gap: 10px; border: 0; border-radius: 1000px;
  background: var(--slf-accent); color: var(--slf-accent-ink); cursor: pointer;
  transition: opacity .2s var(--slf-ease), transform .2s var(--slf-ease); }
.slf__next { padding: 15px 26px; font: 600 15px/1 var(--slf-font); }
.slf__submit { padding: 17px 30px; font: 600 16px/1 var(--slf-font); }
.slf__next svg, .slf__submit svg { width: 18px; height: 18px; }
.slf__next:hover, .slf__submit:hover { opacity: .86; }
.slf__next:active, .slf__submit:active { transform: scale(.96); }
.slf__next:disabled { opacity: .35; cursor: not-allowed; transform: none; }
.slf__submit:disabled { opacity: .6; cursor: default; }
.slf__note { margin: 0; color: var(--slf-ink-2); font: 400 13px/1.5 var(--slf-font); }
/* paired with form-button-states: its button keeps its own look; give it room */
.slf__foot .fbs-btn { width: auto; min-width: 220px; padding: 0 30px; }

/* ---- sent ---- */
.slf__sent { align-items: flex-start; gap: 14px; padding: 8px 0; }
.slf__sent:focus { outline: none; }
.slf__check { display: inline-flex; align-items: center; justify-content: center; width: 52px; height: 52px; border-radius: 50%;
  background: var(--slf-accent); color: var(--slf-accent-ink); }
.slf__check svg { width: 24px; height: 24px; }
.slf__sent-title { margin: 6px 0 0; color: var(--slf-ink); font: 600 28px/1.15 var(--slf-font); letter-spacing: -.015em; }
.slf__sent-title em { font-family: var(--slf-font-accent); font-style: italic; font-weight: 400; letter-spacing: 0; }
.slf__sent-text { max-width: 460px; margin: 0; color: var(--slf-ink-2); font: 400 17px/1.6 var(--slf-font); }
.slf__again { margin-top: 6px; padding: 0; border: 0; background: none; color: var(--slf-ink); font: 600 15px/1 var(--slf-font);
  text-decoration: underline; text-underline-offset: 4px; cursor: pointer; }
.slf :focus-visible:not(.slf__control) { outline: 2px solid var(--slf-ink); outline-offset: 3px; }