/* ================================================================
   CHEMSFLOW / DECISION FOUNDRY 2026
   A sourcing decision interface with material weight.
   ================================================================ */

body.solutions-atelier {
  --sf-ink: #06172a;
  --sf-ink-2: #0a2642;
  --sf-paper: #f3f8fb;
  --sf-ice: #dff2f6;
  --sf-cyan: #25b6e6;
  --sf-blue: #086db6;
  --sf-mint: #9ee7d7;
  --sf-muted: #587086;
  --sf-line: rgba(43, 89, 120, 0.22);
  margin: 0;
  color: var(--sf-ink);
  background: var(--sf-paper);
  font-family: "Manrope", "Aptos", sans-serif;
  font-kerning: normal;
  font-optical-sizing: auto;
}

.solutions-atelier * { box-sizing: border-box; }
.solutions-atelier ::selection { color: white; background: var(--sf-blue); }
.solutions-atelier :focus-visible { outline: 3px solid var(--sf-cyan); outline-offset: 4px; }
.solutions-atelier .sf-page { overflow: clip; }
.solutions-atelier .sf-shell { width: min(100% - 3rem, 1440px); margin-inline: auto; }

.solutions-atelier .glass-panel {
  max-width: 1480px !important;
  border: 1px solid rgba(125, 173, 199, 0.52) !important;
  border-radius: 14px !important;
  background: rgba(247, 252, 255, 0.9) !important;
  box-shadow: 0 8px 24px rgba(5, 31, 55, 0.09) !important;
  backdrop-filter: blur(22px) saturate(130%);
}

.solutions-atelier nav img { filter: none; opacity: 1; }
.solutions-atelier nav a,
.solutions-atelier #nav-network-wrap button,
.solutions-atelier #lang-toggle { font-family: "Chakra Petch", sans-serif; font-weight: 600 !important; letter-spacing: 0.025em; }
.solutions-atelier nav a:hover,
.solutions-atelier #nav-network-wrap button:hover,
.solutions-atelier #lang-toggle:hover { color: var(--sf-blue) !important; }

/* Hero */
.sf-hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: white;
  background: var(--sf-ink);
}

.sf-hero-media { position: absolute; inset: 0; margin: 0; }
.sf-hero-media img {
  width: 100%; height: 100%; object-fit: cover; object-position: 62% 50%;
  filter: saturate(0.84) contrast(1.06) brightness(0.68);
  transform: scale(1.02);
  transition: transform 1.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.sf-hero:hover .sf-hero-media img { transform: scale(1.055); }
.sf-hero-media::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(4, 18, 34, 0.98) 0%, rgba(4, 18, 34, 0.93) 36%, rgba(4, 18, 34, 0.27) 72%, rgba(4, 18, 34, 0.62) 100%),
    linear-gradient(180deg, rgba(4, 18, 34, 0.34), rgba(4, 18, 34, 0.08) 56%, rgba(4, 18, 34, 0.96));
}
.sf-field { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.72; pointer-events: none; }
.sf-hero::after { content: ""; position: absolute; right: 0; bottom: 0; left: 0; height: 1px; background: rgba(159, 226, 241, 0.35); }

.sf-hero-inner { position: relative; z-index: 2; padding: clamp(9rem, 17vh, 13rem) 0 clamp(2rem, 5vh, 4rem); }
.sf-hero-grid { display: grid; grid-template-columns: minmax(0, 1.06fr) minmax(23rem, 0.62fr); gap: clamp(3rem, 8vw, 9rem); align-items: end; }
.sf-system-mark { display: inline-flex; align-items: center; gap: 0.75rem; margin-bottom: 1.5rem; color: var(--sf-mint); font-family: "Chakra Petch", sans-serif; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.sf-system-mark::before { content: ""; width: 0.5rem; height: 0.5rem; border-radius: 50%; background: var(--sf-mint); box-shadow: 0 0 1.2rem rgba(158, 231, 215, 0.8); animation: sf-pulse 2.2s ease-in-out infinite; }
.sf-title { max-width: 11.6ch; margin: 0; font-family: "Chakra Petch", sans-serif; font-size: clamp(3.6rem, 7.1vw, 7.6rem); font-weight: 500; line-height: 0.88; letter-spacing: -0.04em; text-wrap: balance; }
.sf-title strong { display: block; color: #b9eff7; font-weight: 500; }
.sf-lede { max-width: 45rem; margin: 2rem 0 0; color: #c9dae6; font-size: 1.0625rem; line-height: 1.75; text-wrap: pretty; }
.sf-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; margin-top: 2rem; }
.sf-button { display: inline-flex; min-height: 3.25rem; align-items: center; justify-content: center; gap: 0.8rem; padding: 0.78rem 1.15rem; border: 1px solid rgba(191, 233, 244, 0.5); border-radius: 999px; color: white; font-family: "Chakra Petch", sans-serif; font-size: 0.74rem; font-weight: 700; letter-spacing: 0.055em; text-transform: uppercase; transition: color 260ms ease, background 260ms ease, border-color 260ms ease, transform 260ms ease; }
.sf-button-primary { color: var(--sf-ink); border-color: #dff8fb; background: #dff8fb; }
.sf-button:hover { color: var(--sf-ink); border-color: var(--sf-mint); background: var(--sf-mint); transform: translateY(-2px); }
.sf-hero-side { padding-bottom: 0.25rem; }
.sf-live-head { display: flex; justify-content: space-between; gap: 1rem; padding-bottom: 0.85rem; border-bottom: 1px solid rgba(179, 226, 238, 0.27); color: #add1df; font-family: "Chakra Petch", sans-serif; font-size: 0.66rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.sf-live-head span:last-child { color: var(--sf-mint); }
.sf-live-request { padding: 1.5rem 0; border-bottom: 1px solid rgba(179, 226, 238, 0.27); }
.sf-live-request span { display: block; color: #90acbd; font-size: 0.75rem; }
.sf-live-request strong { display: block; margin-top: 0.35rem; font-family: "Michroma", sans-serif; font-size: clamp(1.2rem, 2vw, 1.8rem); font-weight: 400; }
.sf-live-routes { display: grid; }
.sf-live-routes div { display: grid; grid-template-columns: 2.5rem 1fr auto; gap: 0.85rem; align-items: center; padding: 1rem 0; border-bottom: 1px solid rgba(179, 226, 238, 0.2); }
.sf-live-routes b { color: var(--sf-mint); font-family: "Michroma", sans-serif; font-size: 0.65rem; font-weight: 400; }
.sf-live-routes span { color: #d9e9f1; font-size: 0.86rem; }
.sf-live-routes em { color: #90acbd; font-family: "Chakra Petch", sans-serif; font-size: 0.7rem; font-style: normal; }
.sf-hero-foot { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; margin-top: clamp(2.5rem, 6vh, 4rem); padding-top: 1rem; border-top: 1px solid rgba(179, 226, 238, 0.27); color: #92abba; font-family: "Chakra Petch", sans-serif; font-size: 0.65rem; font-weight: 700; letter-spacing: 0.065em; text-transform: uppercase; }
.sf-hero-foot span:last-child { color: var(--sf-mint); text-align: right; }

/* Decision room */
.sf-decision { position: relative; padding: clamp(7rem, 12vw, 12rem) 0; background: var(--sf-paper); }
.sf-decision::before { content: "CHEMSFLOW / 01"; position: absolute; top: 2rem; right: 2rem; color: rgba(6, 23, 42, 0.18); font-family: "Michroma", sans-serif; font-size: 0.62rem; }
.sf-decision-grid { display: grid; grid-template-columns: minmax(18rem, 0.58fr) minmax(38rem, 1.42fr); gap: clamp(3rem, 7vw, 8rem); align-items: start; }
.sf-decision-copy { position: sticky; top: 8.5rem; }
.sf-label { color: var(--sf-blue); font-family: "Chakra Petch", sans-serif; font-size: 0.7rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.sf-heading { max-width: 12ch; margin: 1.25rem 0 0; font-family: "Chakra Petch", sans-serif; font-size: clamp(3rem, 5.5vw, 6rem); font-weight: 500; line-height: 0.92; letter-spacing: -0.04em; text-wrap: balance; }
.sf-decision-copy > p { max-width: 32rem; margin: 1.75rem 0 0; color: var(--sf-muted); font-size: 1rem; line-height: 1.75; }
.sf-mode-tabs { display: grid; margin-top: 2.5rem; border-top: 1px solid var(--sf-line); }
.sf-mode-tab { display: flex; align-items: center; justify-content: space-between; width: 100%; padding: 1rem 0; border-bottom: 1px solid var(--sf-line); color: var(--sf-muted); font-family: "Chakra Petch", sans-serif; font-size: 1rem; font-weight: 600; text-align: left; transition: color 220ms ease, padding 300ms cubic-bezier(0.16, 1, 0.3, 1); }
.sf-mode-tab::after { content: "↗"; color: var(--sf-blue); }
.sf-mode-tab:hover { padding-left: 0.45rem; color: var(--sf-ink); }
.sf-mode-tab[aria-selected="true"] { color: var(--sf-blue); }
.sf-mode-tab[aria-selected="true"]::after { content: "●"; font-size: 0.58rem; }

.sf-board { position: relative; overflow: hidden; border-radius: 12px; color: #edf8fc; background: var(--sf-ink); box-shadow: 0 2rem 5rem rgba(4, 31, 56, 0.16); }
.sf-board::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(circle at 84% 5%, rgba(37, 182, 230, 0.2), transparent 24rem); }
.sf-board-top { position: relative; display: flex; justify-content: space-between; gap: 1rem; padding: 1.25rem 1.5rem; border-bottom: 1px solid rgba(149, 208, 225, 0.22); color: #94adba; font-family: "Chakra Petch", sans-serif; font-size: 0.68rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.sf-board-top span:last-child { color: var(--sf-mint); }
.sf-board-query { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; padding: clamp(1.5rem, 3vw, 2.5rem); border-bottom: 1px solid rgba(149, 208, 225, 0.22); }
.sf-query-main span, .sf-query-meta dt { color: #7f9cad; font-size: 0.72rem; }
.sf-query-main strong { display: block; margin-top: 0.45rem; font-family: "Chakra Petch", sans-serif; font-size: clamp(1.55rem, 3vw, 3rem); font-weight: 500; line-height: 1; }
.sf-query-meta { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; margin: 0; }
.sf-query-meta dd { margin: 0.3rem 0 0; color: #d9e7ee; font-family: "Chakra Petch", sans-serif; font-size: 0.88rem; }
.sf-ranking { position: relative; display: flex; flex-direction: column; padding: 0 clamp(1.5rem, 3vw, 2.5rem) clamp(1.5rem, 3vw, 2.5rem); }
.sf-ranking-head, .sf-route { display: grid; grid-template-columns: 3rem minmax(11rem, 1.2fr) repeat(3, minmax(5rem, 0.55fr)) 4rem; gap: 1rem; align-items: center; }
.sf-ranking-head { padding: 1rem 0; color: #708c9c; font-family: "Chakra Petch", sans-serif; font-size: 0.61rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.sf-route { min-height: 6.4rem; border-top: 1px solid rgba(149, 208, 225, 0.19); transition: background 250ms ease, transform 300ms cubic-bezier(0.16, 1, 0.3, 1); }
.sf-route:hover { background: rgba(26, 90, 124, 0.15); transform: translateX(0.4rem); }
.sf-route-rank { color: var(--sf-mint); font-family: "Michroma", sans-serif; font-size: 0.72rem; }
.sf-route-name strong { display: block; font-family: "Chakra Petch", sans-serif; font-size: 1.02rem; font-weight: 600; }
.sf-route-name span { display: block; margin-top: 0.28rem; color: #809aaa; font-size: 0.72rem; }
.sf-route-metric span { display: block; color: #718b9b; font-size: 0.66rem; }
.sf-route-metric strong { display: block; margin-top: 0.22rem; font-family: "Chakra Petch", sans-serif; font-size: 0.88rem; font-weight: 600; }
.sf-score { display: grid; place-items: center; width: 3.25rem; aspect-ratio: 1; border: 1px solid rgba(158, 231, 215, 0.45); border-radius: 50%; color: var(--sf-mint); font-family: "Michroma", sans-serif; font-size: 0.72rem; }
.sf-board-foot { display: flex; justify-content: space-between; gap: 1rem; padding: 1.1rem 1.5rem; color: #7895a6; background: #04111f; font-size: 0.7rem; }
.sf-board-foot strong { color: #c9e7ee; font-weight: 600; }

/* Workflow */
.sf-workflow { position: relative; padding: clamp(7rem, 12vw, 12rem) 0; color: white; background: #06182a; }
.sf-workflow-head { display: grid; grid-template-columns: 0.6fr 1.1fr 0.7fr; gap: clamp(2rem, 6vw, 7rem); align-items: start; }
.sf-workflow-head .sf-label { color: var(--sf-mint); }
.sf-workflow-head .sf-heading { max-width: 13ch; margin: 0; }
.sf-workflow-head p { max-width: 31rem; margin: 0; color: #a9c0ce; line-height: 1.8; }
.sf-track { position: relative; display: grid; grid-template-columns: repeat(5, minmax(13rem, 1fr)); margin-top: clamp(4rem, 8vw, 8rem); overflow-x: auto; scrollbar-width: none; }
.sf-track::-webkit-scrollbar { display: none; }
.sf-track::before { content: ""; position: absolute; top: 1.15rem; right: 0; left: 0; height: 1px; background: rgba(160, 213, 226, 0.25); }
.sf-track-progress { position: absolute; z-index: 1; top: 1.15rem; left: 0; width: var(--sf-progress, 0%); height: 1px; background: var(--sf-mint); box-shadow: 0 0 1rem rgba(158, 231, 215, 0.7); transition: width 160ms linear; }
.sf-step { position: relative; padding: 0 2rem 0 0; }
.sf-step-index { position: relative; z-index: 2; display: grid; place-items: center; width: 2.3rem; aspect-ratio: 1; border: 1px solid rgba(158, 231, 215, 0.5); border-radius: 50%; color: var(--sf-mint); background: #06182a; font-family: "Michroma", sans-serif; font-size: 0.58rem; }
.sf-step h3 { max-width: 11ch; margin: 2.25rem 0 0; font-family: "Chakra Petch", sans-serif; font-size: clamp(1.35rem, 2vw, 2rem); font-weight: 600; line-height: 1; }
.sf-step p { max-width: 24ch; margin: 1rem 0 0; color: #9fb5c3; font-size: 0.9rem; line-height: 1.7; }

/* Proof image sequence */
.sf-proof { background: var(--sf-paper); }
.sf-proof-intro { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 4rem; align-items: end; padding: clamp(6rem, 10vw, 9rem) 0 clamp(3rem, 5vw, 5rem); }
.sf-proof-intro .sf-heading { margin: 0; }
.sf-proof-intro p { max-width: 40rem; margin: 0 0 0 auto; color: var(--sf-muted); font-size: 1rem; line-height: 1.8; }
.sf-proof-scenes { display: grid; grid-template-columns: 1.25fr 0.75fr; grid-template-rows: repeat(2, minmax(20rem, 34vw)); gap: 1px; background: #7da4b9; }
.sf-scene { position: relative; min-height: 24rem; overflow: hidden; color: white; background: var(--sf-ink); }
.sf-scene:first-child { grid-row: 1 / 3; }
.sf-scene img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.72) contrast(1.08); transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1), filter 700ms ease; }
.sf-scene:hover img { transform: scale(1.055); filter: saturate(0.95) contrast(1.03); }
.sf-scene::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 38%, rgba(3, 17, 31, 0.9)); }
.sf-scene-copy { position: absolute; z-index: 2; right: clamp(1.4rem, 3vw, 3rem); bottom: clamp(1.4rem, 3vw, 3rem); left: clamp(1.4rem, 3vw, 3rem); }
.sf-scene-copy span { color: var(--sf-mint); font-family: "Chakra Petch", sans-serif; font-size: 0.68rem; font-weight: 700; letter-spacing: 0.07em; text-transform: uppercase; }
.sf-scene-copy h3 { max-width: 15ch; margin: 0.75rem 0 0; font-family: "Chakra Petch", sans-serif; font-size: clamp(1.6rem, 3vw, 3.5rem); font-weight: 500; line-height: 0.98; letter-spacing: -0.03em; }
.sf-scene:not(:first-child) .sf-scene-copy h3 { font-size: clamp(1.4rem, 2vw, 2.2rem); }

/* Deliverable dossier */
.sf-dossier { padding: clamp(7rem, 12vw, 12rem) 0; background: var(--sf-ice); }
.sf-dossier-grid { display: grid; grid-template-columns: minmax(18rem, 0.68fr) minmax(38rem, 1.32fr); gap: clamp(3rem, 8vw, 9rem); align-items: start; }
.sf-dossier-copy .sf-heading { max-width: 10ch; }
.sf-dossier-copy p { max-width: 32rem; margin: 1.75rem 0 0; color: var(--sf-muted); line-height: 1.8; }
.sf-dossier-sheet { border-top: 1px solid rgba(18, 65, 93, 0.4); }
.sf-dossier-row { display: grid; grid-template-columns: 3rem minmax(12rem, 0.8fr) minmax(18rem, 1.2fr); gap: 1.5rem; align-items: start; padding: 2rem 0; border-bottom: 1px solid rgba(18, 65, 93, 0.28); transition: padding 300ms cubic-bezier(0.16, 1, 0.3, 1), color 220ms ease; }
.sf-dossier-row:hover { padding-left: 0.7rem; color: var(--sf-blue); }
.sf-dossier-row > span { color: var(--sf-blue); font-family: "Michroma", sans-serif; font-size: 0.62rem; }
.sf-dossier-row h3 { margin: 0; font-family: "Chakra Petch", sans-serif; font-size: clamp(1.25rem, 2vw, 1.8rem); font-weight: 600; line-height: 1.05; }
.sf-dossier-row p { margin: 0; color: var(--sf-muted); font-size: 0.94rem; line-height: 1.7; }

/* CTA */
.sf-close { position: relative; overflow: hidden; padding: clamp(7rem, 12vw, 12rem) 0; color: white; background: var(--sf-blue); }
.sf-close::before { content: ""; position: absolute; width: min(54vw, 50rem); aspect-ratio: 1; right: -12%; bottom: -55%; border: 1px solid rgba(255,255,255,0.25); border-radius: 50%; box-shadow: 0 0 0 5rem rgba(255,255,255,0.035), 0 0 0 10rem rgba(255,255,255,0.025); }
.sf-close-grid { position: relative; display: grid; grid-template-columns: 1.2fr 0.4fr; gap: 4rem; align-items: end; }
.sf-close h2 { max-width: 10ch; margin: 0; font-family: "Chakra Petch", sans-serif; font-size: clamp(4rem, 8vw, 8.5rem); font-weight: 500; line-height: 0.86; letter-spacing: -0.04em; }
.sf-close-side { display: grid; justify-items: start; gap: 1.5rem; }
.sf-close-side p { max-width: 26rem; margin: 0; color: #d7f4fb; line-height: 1.75; }
.sf-close .sf-button-primary { color: var(--sf-blue); border-color: white; background: white; }

/* Reveal */
.sf-reveal { opacity: 1; transform: none; filter: none; }
.solutions-atelier.sf-ready .sf-reveal { opacity: 0; transform: translate3d(0, 2rem, 0); filter: blur(8px); transition: opacity 850ms cubic-bezier(0.16,1,0.3,1), transform 850ms cubic-bezier(0.16,1,0.3,1), filter 850ms ease; }
.solutions-atelier.sf-ready .sf-reveal.is-visible { opacity: 1; transform: none; filter: none; }

.solutions-atelier footer { position: relative; z-index: 2; border-color: oklch(0.38 0.07 246 / 0.7) !important; background: oklch(0.2 0.052 251) !important; }
.solutions-atelier footer, .solutions-atelier footer p, .solutions-atelier footer a, .solutions-atelier footer span, .solutions-atelier footer h4 { color: oklch(0.89 0.022 222) !important; }
.solutions-atelier footer img { filter: brightness(0) invert(1) contrast(1.12); }
.solutions-atelier footer a:hover { color: oklch(0.8 0.055 189) !important; }

@keyframes sf-pulse { 0%,100% { opacity: 0.5; transform: scale(0.82); } 50% { opacity: 1; transform: scale(1.15); } }

@media (max-width: 1100px) {
  .sf-hero-grid, .sf-decision-grid, .sf-dossier-grid { grid-template-columns: 1fr; }
  .sf-hero-side { max-width: 44rem; }
  .sf-decision-copy { position: static; max-width: 46rem; }
  .sf-decision-copy .sf-heading { max-width: 12ch; }
  .sf-workflow-head { grid-template-columns: 0.45fr 1fr; }
  .sf-workflow-head p { grid-column: 2; }
  .sf-dossier-copy { max-width: 46rem; }
}

@media (max-width: 767px) {
  .solutions-atelier nav { padding: 1rem !important; }
  .solutions-atelier .glass-panel { padding: 0.55rem 1rem !important; }
  .solutions-atelier .sf-shell { width: min(100% - 2rem, 42rem); }
  .sf-hero-inner { padding-top: 7.5rem; }
  .sf-hero-grid { gap: 2.5rem; }
  .sf-title { font-size: clamp(2.9rem, 14vw, 4.4rem); line-height: 0.92; }
  .sf-lede { font-size: 1rem; }
  .sf-hero-foot { grid-template-columns: repeat(2, minmax(0,1fr)); row-gap: 0.8rem; }
  .sf-hero-foot span:last-child { text-align: left; }
  .sf-live-head { padding-top: 1rem; }
  .sf-heading { font-size: clamp(2.6rem, 12vw, 4rem); }
  .sf-decision-grid, .sf-dossier-grid { gap: 2.5rem; }
  .sf-board-query { grid-template-columns: 1fr; }
  .sf-ranking { overflow-x: auto; }
  .sf-ranking-head, .sf-route { min-width: 46rem; }
  .sf-workflow-head { grid-template-columns: 1fr; gap: 1.25rem; }
  .sf-workflow-head p { grid-column: auto; }
  .sf-track { margin-right: -1rem; }
  .sf-proof-intro { grid-template-columns: 1fr; gap: 1.5rem; }
  .sf-proof-intro p { margin-left: 0; }
  .sf-proof-scenes { grid-template-columns: 1fr; grid-template-rows: repeat(3, 28rem); }
  .sf-scene:first-child { grid-row: auto; }
  .sf-dossier-row { grid-template-columns: 2rem 1fr; gap: 1rem; }
  .sf-dossier-row p { grid-column: 2; }
  .sf-close-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .sf-close h2 { font-size: clamp(3.5rem, 17vw, 5.5rem); }
}

@media (prefers-reduced-motion: reduce) {
  .solutions-atelier *, .solutions-atelier *::before, .solutions-atelier *::after { scroll-behavior: auto !important; animation: none !important; transition-duration: 0.001ms !important; }
  .sf-field { display: none; }
  .solutions-atelier.sf-ready .sf-reveal { opacity: 1; transform: none; filter: none; }
}