/* ===========================================================
   Cahier des charges interactif — application mobile
   Priorité : lisibilité. Fond net, contraste franc, colonne courte.
   =========================================================== */

:root {
  --bg:         #FFFFFF;
  --bg-alt:     #F6F7F8;
  --ink:        #14171A;
  --ink-2:      #454C52;
  --ink-3:      #6B747B;
  --line:       #DDE1E4;
  --line-2:     #C3CACF;

  --accent:     #0A6B62;
  --accent-dk:  #054A43;
  --accent-lt:  #E6F2F0;
  --warn:       #9A4C06;
  --warn-lt:    #FDF2E4;
  --danger:     #A32718;

  --sans: "Figtree", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;

  --pad: clamp(1.25rem, 4vw, 3rem);
  --maxw: 1240px;
  --radius: 6px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.shell { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad); }

#rail {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: var(--accent); z-index: 100; transition: width .3s ease-out;
}

/* ---------------- header ---------------- */
.head { border-bottom: 1px solid var(--line); padding: 2.5rem 0 2.75rem; }

.kicker {
  font-family: var(--mono); font-size: .74rem; font-weight: 500;
  letter-spacing: .1em; text-transform: uppercase; color: var(--accent);
  margin-bottom: 1.25rem;
}

h1 {
  font-size: clamp(2rem, 4.6vw, 3.05rem);
  line-height: 1.12; font-weight: 700; letter-spacing: -0.025em;
  max-width: 19ch; margin-bottom: 1.25rem;
}

.lede { font-size: clamp(1.02rem, 1.6vw, 1.16rem); color: var(--ink-2); max-width: 66ch; }
.lede + .lede { margin-top: .85rem; }
.lede strong { color: var(--ink); font-weight: 600; }

.chips { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.75rem; }
.chip {
  font-family: var(--mono); font-size: .76rem; font-weight: 500;
  border: 1px solid var(--line-2); border-radius: 100px;
  padding: .35rem .8rem; color: var(--ink-2); background: var(--bg);
}
.chip b { color: var(--ink); font-weight: 600; }
.chip.alert { border-color: var(--danger); color: var(--danger); }
.chip.alert b { color: var(--danger); }

/* ---------------- layout ---------------- */
.layout { display: grid; gap: 3rem; padding: 3rem 0 1rem; align-items: start; }
@media (min-width: 1000px) {
  .layout { grid-template-columns: minmax(0, 1fr) 300px; gap: 4rem; }
}

/* ---------------- sections ---------------- */
.sec { margin-bottom: 3.5rem; scroll-margin-top: 1.5rem; max-width: 720px; }

.sec-head { display: flex; align-items: center; gap: .75rem; margin-bottom: .6rem; }
.sec-num {
  font-family: var(--mono); font-size: .74rem; font-weight: 600;
  color: var(--accent); background: var(--accent-lt);
  padding: .18rem .5rem; border-radius: 4px; flex-shrink: 0;
}
.sec-head h2 { font-size: clamp(1.3rem, 2.4vw, 1.6rem); font-weight: 700; letter-spacing: -0.02em; line-height: 1.25; }

.hint { color: var(--ink-2); font-size: .97rem; margin-bottom: 1.35rem; max-width: 64ch; }
.hint code {
  font-family: var(--mono); font-size: .86em; background: var(--bg-alt);
  border: 1px solid var(--line); border-radius: 4px; padding: .1em .35em;
}

/* ---------------- options ---------------- */
.opts { display: grid; gap: .55rem; }
@media (min-width: 620px) { .opts { grid-template-columns: 1fr 1fr; } }

.opt {
  position: relative; display: flex; align-items: flex-start; gap: .7rem;
  cursor: pointer; background: var(--bg);
  border: 1.5px solid var(--line); border-radius: var(--radius);
  padding: .9rem 1rem;
  transition: border-color .13s, background .13s;
}
.opt:hover { border-color: var(--line-2); background: var(--bg-alt); }
.opt input { position: absolute; opacity: 0; width: 0; height: 0; }

.opt .box {
  width: 18px; height: 18px; flex-shrink: 0; margin-top: .15rem;
  border: 1.5px solid var(--line-2); background: var(--bg);
  border-radius: 4px; position: relative; transition: all .13s;
}
.opt input[type="radio"] ~ .box { border-radius: 50%; }
.opt .box::after {
  content: ""; position: absolute; inset: 3px;
  background: var(--bg); border-radius: inherit;
  transform: scale(0); transition: transform .13s;
}
.opt input:checked ~ .box { background: var(--accent); border-color: var(--accent); }
.opt input:checked ~ .box::after { transform: scale(1); }
.opt input:focus-visible ~ .box { outline: 2px solid var(--accent); outline-offset: 2px; }

.opt .txt { min-width: 0; }
.opt .lbl { display: block; font-size: .97rem; font-weight: 600; line-height: 1.35; }
.opt .sub { display: block; font-size: .84rem; color: var(--ink-3); margin-top: .12rem; line-height: 1.4; }

.opt:has(input:checked) { border-color: var(--accent); background: var(--accent-lt); }
.opt:has(input:checked) .sub { color: var(--accent-dk); }

/* ---------------- free text ---------------- */
.field { margin-bottom: 1.25rem; }
.field label { display: block; font-size: .9rem; font-weight: 600; color: var(--ink); margin-bottom: .5rem; }
textarea {
  width: 100%; font-family: var(--sans); font-size: 1rem; color: var(--ink);
  background: var(--bg); border: 1.5px solid var(--line);
  border-radius: var(--radius); padding: .85rem 1rem; resize: vertical; line-height: 1.55;
}
textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-lt); }
textarea::placeholder { color: var(--ink-3); }
.count { font-family: var(--mono); font-size: .74rem; color: var(--ink-3); text-align: right; margin-top: .35rem; }

/* ---------------- conditional callout ---------------- */
.flag {
  display: none; margin-top: 1.1rem; padding: 1.1rem 1.2rem;
  background: var(--warn-lt); border: 1px solid #E8C79B;
  border-left: 4px solid var(--warn); border-radius: var(--radius);
}
.flag.on { display: block; animation: fade .25s ease-out; }
.flag h4 { font-size: .88rem; font-weight: 700; color: var(--warn); margin-bottom: .45rem; }
.flag p { font-size: .93rem; color: var(--ink-2); }
.flag p + p { margin-top: .55rem; }
.flag strong { color: var(--ink); font-weight: 700; }
.flag.good { background: var(--accent-lt); border-color: #A9CFC9; border-left-color: var(--accent); }
.flag.good h4 { color: var(--accent-dk); }

@keyframes fade { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }

/* ---------------- estimate panel ---------------- */
.side { position: sticky; top: 1.5rem; }
.panel {
  background: var(--bg); border: 1.5px solid var(--line);
  border-radius: 10px; padding: 1.4rem; box-shadow: 0 1px 2px rgba(20,23,26,.05);
}
.panel .cap {
  font-family: var(--mono); font-size: .7rem; font-weight: 500; letter-spacing: .07em;
  text-transform: uppercase; color: var(--ink-3); margin-bottom: .6rem;
}
#dock-val {
  font-size: 1.42rem; font-weight: 700; letter-spacing: -0.03em;
  line-height: 1.2; color: var(--ink); font-variant-numeric: tabular-nums;
}
#dock-val span { color: var(--ink-3); font-weight: 400; }
#dock-note { font-size: .84rem; color: var(--ink-2); margin-top: .6rem; line-height: 1.5; }

.bar { height: 5px; background: var(--bg-alt); border-radius: 100px; overflow: hidden; margin: 1.1rem 0 .5rem; }
.bar i { display: block; height: 100%; width: 0%; background: var(--accent); border-radius: 100px; transition: width .3s ease-out; }
.bar-lab { font-family: var(--mono); font-size: .72rem; color: var(--ink-3); }

#dock-btn {
  width: 100%; margin-top: 1.1rem; font-family: var(--sans);
  font-size: .93rem; font-weight: 600; background: var(--accent); color: #fff;
  border: 0; border-radius: var(--radius); padding: .8rem 1rem; cursor: pointer;
  transition: background .14s;
}
#dock-btn:hover { background: var(--accent-dk); }

@media (max-width: 999px) {
  .side {
    position: fixed; bottom: 0; left: 0; right: 0; top: auto; z-index: 90;
    background: var(--bg); border-top: 1.5px solid var(--line);
    box-shadow: 0 -2px 12px rgba(20,23,26,.09);
  }
  .panel {
    border: 0; border-radius: 0; box-shadow: none; padding: .75rem var(--pad);
    max-width: var(--maxw); margin: 0 auto;
    display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 1rem;
  }
  .panel .cap { margin-bottom: .1rem; font-size: .64rem; }
  #dock-val { font-size: 1.12rem; }
  #dock-note, .bar, .bar-lab { display: none; }
  #dock-btn { margin-top: 0; width: auto; white-space: nowrap; padding: .7rem 1.1rem; }
  body { padding-bottom: 5rem; }
}

/* ---------------- blind spots ---------------- */
.blind { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 3.5rem 0; margin-top: 1rem; }
.blind h2 { font-size: clamp(1.5rem, 3.2vw, 2.1rem); font-weight: 700; letter-spacing: -0.025em; max-width: 22ch; margin-bottom: .7rem; line-height: 1.2; }
.blind > .shell > p { color: var(--ink-2); max-width: 64ch; margin-bottom: 2.25rem; }

.spots { display: grid; gap: 1rem; }
@media (min-width: 880px) { .spots { grid-template-columns: repeat(3, 1fr); } }
.spot { background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 1.5rem 1.4rem; }
.spot .tag {
  display: inline-block; font-family: var(--mono); font-size: .68rem; font-weight: 500;
  letter-spacing: .07em; text-transform: uppercase; color: var(--accent);
  background: var(--accent-lt); padding: .22rem .55rem; border-radius: 4px; margin-bottom: .85rem;
}
.spot h3 { font-size: 1.05rem; font-weight: 700; line-height: 1.3; margin-bottom: .55rem; letter-spacing: -0.01em; }
.spot p { font-size: .92rem; color: var(--ink-2); }
.spot .fig { display: block; margin-top: 1.1rem; padding-top: .9rem; border-top: 1px solid var(--line); }
.spot .fig b { display: block; font-size: 1.55rem; font-weight: 700; color: var(--accent); letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.spot .fig small { display: block; font-size: .78rem; color: var(--ink-3); margin-top: .15rem; }

/* ---------------- recap ---------------- */
.recap-wrap { padding: 3.5rem 0 1rem; }
.output { background: var(--bg); border: 1.5px solid var(--line); border-radius: 10px; overflow: hidden; margin-top: 1.35rem; }
.output-head {
  display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap;
  background: var(--bg-alt); border-bottom: 1px solid var(--line); padding: .85rem 1.2rem;
}
.output-head span { font-family: var(--mono); font-size: .76rem; color: var(--ink-2); font-weight: 500; }
.btn-row { display: flex; gap: .5rem; flex-wrap: wrap; }
.btn {
  font-family: var(--sans); font-size: .86rem; font-weight: 600;
  padding: .5rem .9rem; border: 1.5px solid var(--line-2); background: var(--bg);
  color: var(--ink); border-radius: var(--radius); cursor: pointer; transition: all .14s;
}
.btn:hover { border-color: var(--ink); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-dk); border-color: var(--accent-dk); }
.btn.done { background: var(--accent); border-color: var(--accent); color: #fff; }

#recap {
  font-family: var(--mono); font-size: .82rem; line-height: 1.7;
  white-space: pre-wrap; word-break: break-word; color: var(--ink-2);
  padding: 1.35rem 1.2rem; max-height: 480px; overflow-y: auto;
}
#recap .ph { color: var(--ink-3); }

/* ---------------- CTA ---------------- */
.cta { border-top: 1px solid var(--line); margin-top: 3.5rem; padding: 3.5rem 0; }
.cta h2 { font-size: clamp(1.7rem, 3.6vw, 2.4rem); font-weight: 700; letter-spacing: -0.03em; max-width: 20ch; margin-bottom: .9rem; line-height: 1.15; }
.cta > .shell > p { color: var(--ink-2); max-width: 62ch; margin-bottom: 2rem; }

.channels { display: grid; gap: 1rem; }
@media (min-width: 700px) { .channels { grid-template-columns: 1fr 1fr; } }
.chan {
  display: block; text-decoration: none; color: inherit;
  background: var(--bg); border: 1.5px solid var(--line); border-radius: 10px;
  padding: 1.5rem 1.4rem; transition: border-color .14s, background .14s;
}
.chan:hover { border-color: var(--accent); background: var(--accent-lt); }
.chan .k { display: block; font-size: .82rem; font-weight: 600; color: var(--ink-3); margin-bottom: .5rem; }
.chan .v {
  display: block; font-family: var(--mono); font-size: clamp(1rem, 2.2vw, 1.2rem);
  font-weight: 600; color: var(--accent-dk); word-break: break-word; line-height: 1.3;
}
.chan .n { display: block; font-size: .88rem; color: var(--ink-2); margin-top: .6rem; }

footer {
  border-top: 1px solid var(--line); padding: 1.5rem 0 2.5rem;
  font-size: .82rem; color: var(--ink-3);
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
}

/* ---------------- reveal ---------------- */
.rv { opacity: 0; transform: translateY(10px); transition: opacity .45s ease-out, transform .45s ease-out; }
.rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .rv { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}