/*
  COVELSA DESIGN BRIEF — inspired by https://suno.com/
  Analysis: Suno sequences a compact floating nav, typography-led creator hero,
  interactive prompt surface, discovery/showcase bands, feature editorial blocks,
  a strong conversion moment, FAQ, and dense footer.
  Adaptation: creator prompt → enterprise intent composer; song feed → workflow
  showcase; album art → use-case visuals; studio controls → governed AI orchestration.
  Hero: centered, display-serif accent, warm dusk wash, large rounded composer.
  Palette: studio black #101012, anvil #19181b, cream #f7f4ef, smoke #bdb9b4,
  coral #ff5b78, apricot #ff9561, violet #9274ff. No blue SaaS gradient/glass grid.
  Rhythm: cinematic 112–160px sections, 1440px max width, rounded low-elevation panels.
  Motion: 700ms fade/translate reveals, smooth 260ms controls, restrained drift.
  Layouts: floating-nav / creator-hero / workflow-showcase / tracklist /
  album-grid / studio-split / prompt-cta / editorial-footer.
*/

:root {
  --color-bg: #101012;
  --color-bg-alt: #171619;
  --color-surface: #201f22;
  --color-surface-raised: #29272b;
  --color-text: #f7f4ef;
  --color-text-muted: #bdb9b4;
  --color-accent: #ff5b78;
  --color-accent-hover: #ff765f;
  --color-apricot: #ff9561;
  --color-violet: #9274ff;
  --color-border: rgba(247, 244, 239, .14);
  --font-display: "Instrument Serif", Georgia, serif;
  --font-body: "DM Sans", Arial, sans-serif;
  --radius-sm: 12px;
  --radius-md: 22px;
  --radius-lg: 38px;
  --space-section: clamp(6.5rem, 11vw, 10rem);
  --container: 1440px;
  --transition-base: 260ms cubic-bezier(.22, 1, .36, 1);
  --transition-reveal: 700ms cubic-bezier(.22, 1, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--color-bg); }
body { margin: 0; min-width: 320px; overflow-x: hidden; background: var(--color-bg); color: var(--color-text); font-family: var(--font-body); font-size: 16px; line-height: 1.55; }
body.modal-open { overflow: hidden; }
button, a { font: inherit; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
h1, h2, h3, p { margin-top: 0; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--color-apricot); outline-offset: 4px; }
.skip-link { position: fixed; top: -80px; left: 20px; z-index: 1000; padding: 12px 18px; background: var(--color-text); color: var(--color-bg); border-radius: 8px; }
.skip-link:focus { top: 20px; }
.eyebrow { margin-bottom: 20px; color: var(--color-text-muted); font-size: .75rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; }

.site-header {
  position: fixed; top: 18px; left: 50%; z-index: 100; display: grid; grid-template-columns: 1fr auto 1fr;
  align-items: center; width: min(calc(100% - 32px), 1380px); min-height: 62px; padding: 9px 12px 9px 18px;
  transform: translateX(-50%); border: 1px solid rgba(247,244,239,.1); border-radius: 18px;
  background: rgba(16,16,18,.76); box-shadow: 0 16px 50px rgba(0,0,0,.2); backdrop-filter: blur(18px);
  transition: background var(--transition-base), top var(--transition-base);
}
.site-header.is-scrolled { top: 10px; background: rgba(16,16,18,.94); }
.brand { display: inline-flex; width: max-content; }
.desktop-nav { display: flex; align-items: center; gap: 30px; }
.desktop-nav a, .text-button { color: var(--color-text-muted); font-size: .88rem; transition: color var(--transition-base); }
.desktop-nav a:hover, .text-button:hover { color: var(--color-text); }
.header-actions { display: flex; justify-content: flex-end; align-items: center; gap: 17px; }
.text-button { border: 0; background: transparent; }
.btn { display: inline-flex; justify-content: center; align-items: center; gap: 10px; min-height: 52px; padding: 0 22px; border: 1px solid transparent; border-radius: 14px; font-weight: 600; transition: transform var(--transition-base), background var(--transition-base), border-color var(--transition-base); }
.btn:hover { transform: translateY(-2px); }
.btn--compact { min-height: 42px; padding: 0 17px; border-radius: 11px; font-size: .85rem; }
.btn--cream { background: var(--color-text); color: var(--color-bg); }
.btn--cream:hover { background: #fff; }
.btn--accent { background: var(--color-accent); color: #17090d; }
.btn--accent:hover { background: var(--color-accent-hover); }
.btn--outline { border-color: var(--color-border); background: transparent; }
.btn--outline:hover { border-color: rgba(247,244,239,.45); }
.btn--ghost { border-color: rgba(247,244,239,.26); background: rgba(247,244,239,.06); }
.menu-toggle { display: none; width: 42px; height: 42px; padding: 0; border: 0; border-radius: 10px; background: var(--color-surface); }
.menu-toggle span { display: block; width: 18px; height: 1px; margin: 5px auto; background: var(--color-text); transition: transform var(--transition-base); }
.mobile-menu { position: absolute; top: 72px; left: 0; display: grid; width: 100%; padding: 20px; gap: 4px; border: 1px solid var(--color-border); border-radius: 18px; background: #171619; }
.mobile-menu[hidden] { display: none; }
.mobile-menu a { padding: 12px 6px; }

.hero { position: relative; min-height: 100svh; padding: clamp(11rem, 20vh, 14rem) 24px 60px; overflow: hidden; }
.hero::after { content: ""; position: absolute; inset: auto 0 0; height: 34%; z-index: 0; background: linear-gradient(transparent, var(--color-bg)); pointer-events: none; }
.hero-glow { position: absolute; top: -30%; left: 50%; width: min(130vw, 1800px); height: 880px; transform: translateX(-50%); border-radius: 50%; background: radial-gradient(ellipse at 50% 35%, rgba(255,149,97,.7) 0%, rgba(170,55,66,.58) 29%, rgba(79,29,52,.33) 52%, transparent 72%); filter: blur(8px); animation: dusk-breathe 9s ease-in-out infinite alternate; }
.hero-copy { position: relative; z-index: 1; width: min(970px, 100%); margin: 0 auto 48px; text-align: center; }
.hero-title { max-width: 980px; margin: 0 auto 28px; font-size: clamp(4.2rem, 8.6vw, 8rem); font-weight: 400; line-height: .88; letter-spacing: -.055em; text-wrap: balance; }
.hero-title em, .capability-intro em, .studio-copy em { font-family: var(--font-display); font-weight: 400; }
.hero-lede { width: min(680px, 100%); margin: 0 auto; color: rgba(247,244,239,.78); font-size: clamp(1.04rem, 1.5vw, 1.28rem); line-height: 1.55; }
.intent-composer { position: relative; z-index: 2; width: min(860px, 100%); min-height: 238px; margin: 0 auto; padding: 20px; border: 1px solid rgba(247,244,239,.2); border-radius: 28px; background: rgba(26,24,28,.9); box-shadow: 0 35px 100px rgba(0,0,0,.44), inset 0 1px rgba(255,255,255,.06); backdrop-filter: blur(22px); }
.composer-topline { display: flex; align-items: center; gap: 10px; color: var(--color-text-muted); font-size: .78rem; }
.pulse-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--color-accent); box-shadow: 0 0 0 5px rgba(255,91,120,.12); }
.composer-mode { margin-left: auto; padding: 5px 9px; border: 1px solid var(--color-border); border-radius: 7px; color: var(--color-text); }
.composer-prompt { max-width: 720px; min-height: 82px; margin: 26px 4px 14px; color: var(--color-text); font-size: clamp(1.05rem, 1.7vw, 1.34rem); line-height: 1.45; }
.composer-actions { display: flex; align-items: center; gap: 10px; }
.icon-button { width: 42px; height: 42px; border: 1px solid var(--color-border); border-radius: 11px; background: transparent; font-size: 1.45rem; }
.composer-tags { display: flex; gap: 7px; }
.composer-tags span { padding: 7px 10px; border-radius: 8px; background: var(--color-surface-raised); color: var(--color-text-muted); font-size: .73rem; }
.create-button { display: inline-flex; align-items: center; gap: 18px; min-height: 44px; margin-left: auto; padding: 0 10px 0 17px; border: 0; border-radius: 11px; background: var(--color-accent); color: #1c0c10; font-weight: 600; }
.create-button span { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 7px; background: rgba(16,16,18,.16); }
.signal-strip { position: relative; z-index: 2; display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 15px; margin-top: 38px; color: rgba(247,244,239,.5); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; }
.signal-strip i { width: 3px; height: 3px; border-radius: 50%; background: var(--color-accent); }

.platform { padding: var(--space-section) 24px; }
.section-heading { display: grid; grid-template-columns: minmax(220px,.55fr) 1.25fr .7fr; align-items: end; max-width: var(--container); margin: 0 auto 70px; gap: 48px; }
.section-heading .eyebrow { align-self: start; }
.section-heading h2, .solutions-head h2, .studio-copy h2, .closing h2 { margin-bottom: 0; font-size: clamp(3rem, 5.7vw, 6rem); font-weight: 500; line-height: .96; letter-spacing: -.05em; text-wrap: balance; }
.section-heading > p:last-child { margin-bottom: 4px; color: var(--color-text-muted); }
.workflow-stage { display: grid; grid-template-columns: 270px 1fr; max-width: var(--container); min-height: 650px; margin: auto; overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-bg-alt); box-shadow: 0 40px 100px rgba(0,0,0,.24); }
.workflow-rail { display: flex; flex-direction: column; padding: 28px 16px; gap: 8px; border-right: 1px solid var(--color-border); }
.workflow-tab { display: flex; align-items: center; gap: 16px; padding: 19px 16px; border: 0; border-radius: 13px; background: transparent; color: var(--color-text-muted); text-align: left; transition: background var(--transition-base), color var(--transition-base); }
.workflow-tab span { font-size: .72rem; }
.workflow-tab.is-active { background: var(--color-surface-raised); color: var(--color-text); }
.workflow-canvas { display: flex; flex-direction: column; padding: 22px; background: radial-gradient(circle at 70% 20%, rgba(146,116,255,.12), transparent 35%), #121114; }
.canvas-header { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; color: var(--color-text-muted); font-size: .75rem; }
.canvas-header > :last-child { text-align: right; }
.status-pill { width: max-content; padding: 6px 9px; border-radius: 20px; background: rgba(132,244,174,.1); color: #84f4ae; }
.canvas-body { display: grid; grid-template-columns: 1fr 100px 1fr; align-items: center; flex: 1; max-width: 900px; width: 100%; margin: auto; }
.flow-node { min-height: 220px; padding: 30px; border: 1px solid rgba(247,244,239,.17); border-radius: 24px; background: linear-gradient(145deg, #252329, #19181c); }
.flow-node small, .flow-results small { display: block; margin-bottom: 30px; color: var(--color-apricot); font-size: .72rem; text-transform: uppercase; letter-spacing: .1em; }
.flow-node strong { display: block; margin-bottom: 14px; font-size: 1.55rem; line-height: 1.15; }
.flow-node p { margin-bottom: 0; color: var(--color-text-muted); font-size: .9rem; }
.flow-line { display: flex; justify-content: space-evenly; align-items: center; position: relative; }
.flow-line::before { content: ""; position: absolute; width: 100%; height: 1px; background: linear-gradient(90deg, var(--color-border), var(--color-accent)); }
.flow-line span { position: relative; z-index: 1; width: 6px; height: 6px; border-radius: 50%; background: var(--color-accent); animation: signal 2s linear infinite; }
.flow-line span:nth-child(2) { animation-delay: .6s; }.flow-line span:nth-child(3) { animation-delay: 1.2s; }
.flow-results { display: grid; gap: 12px; }
.flow-results article { padding: 22px; border: 1px solid var(--color-border); border-radius: 18px; background: rgba(32,31,34,.9); }
.flow-results small { margin-bottom: 8px; color: var(--color-text-muted); }
.flow-results strong { display: block; margin-bottom: 14px; font-size: 1.1rem; }
.flow-results span { color: #84f4ae; font-size: .7rem; }
.canvas-cta { align-self: flex-end; padding: 10px 0; border: 0; background: transparent; color: var(--color-text-muted); }
.canvas-cta span { color: var(--color-accent); }

.capabilities { max-width: var(--container); margin: auto; padding: var(--space-section) 24px; }
.capability-intro { display: grid; grid-template-columns: .6fr 1.4fr; margin-bottom: 82px; gap: 60px; }
.capability-intro h2 { max-width: 980px; margin: 0; font-size: clamp(3rem, 6vw, 6.2rem); font-weight: 500; line-height: .94; letter-spacing: -.05em; }
.capability-list { border-top: 1px solid var(--color-border); }
.capability-row { display: grid; grid-template-columns: 70px 1fr 220px 52px; align-items: center; gap: 28px; padding: 34px 0; border-bottom: 1px solid var(--color-border); transition: padding var(--transition-base), background var(--transition-base); }
.capability-row:hover { padding-inline: 16px; background: rgba(247,244,239,.025); }
.row-index { align-self: start; color: var(--color-accent); font-size: .75rem; }
.capability-row h3 { margin-bottom: 7px; font-size: clamp(1.45rem, 2.1vw, 2rem); font-weight: 500; }
.capability-row p { max-width: 650px; margin: 0; color: var(--color-text-muted); }
.row-meta { color: var(--color-text-muted); font-size: .78rem; }
.capability-row button { width: 48px; height: 48px; border: 1px solid var(--color-border); border-radius: 50%; background: transparent; transition: transform var(--transition-base), background var(--transition-base); }
.capability-row:hover button { transform: rotate(45deg); background: var(--color-text); color: var(--color-bg); }

.solutions { padding: var(--space-section) 24px; background: var(--color-text); color: var(--color-bg); }
.solutions .eyebrow { color: #686469; }
.solutions-head { display: flex; justify-content: space-between; align-items: end; max-width: var(--container); margin: 0 auto 70px; gap: 40px; }
.solutions-head h2 { max-width: 1000px; }
.solutions .btn--outline { flex: none; border-color: rgba(16,16,18,.24); }
.solution-grid { display: grid; grid-template-columns: 1.3fr 1fr; max-width: var(--container); margin: auto; gap: 18px; }
.solution-card { display: grid; grid-template-columns: .8fr 1.2fr; min-height: 360px; overflow: hidden; border: 1px solid rgba(16,16,18,.14); border-radius: 28px; background: #e9e5df; }
.solution-card--large { grid-row: span 2; grid-template-columns: 1fr; min-height: 740px; }
.solution-art { position: relative; overflow: hidden; min-height: 250px; background: #b8a7ff; }
.solution-art--revenue { display: grid; place-items: center; background: radial-gradient(circle at 50% 30%, #ffb09d, #eb667f 42%, #40213a 90%); }
.solution-art--revenue span { position: relative; z-index: 2; font-family: var(--font-display); font-size: clamp(5rem, 10vw, 9rem); color: var(--color-text); }
.solution-art--revenue i { position: absolute; bottom: -20px; width: 12%; height: var(--h, 30%); border-radius: 20px 20px 0 0; background: rgba(247,244,239,.2); }
.solution-art--revenue i:nth-of-type(1){left:12%;--h:22%}.solution-art--revenue i:nth-of-type(2){left:28%;--h:34%}.solution-art--revenue i:nth-of-type(3){left:44%;--h:55%}.solution-art--revenue i:nth-of-type(4){left:60%;--h:68%}.solution-art--revenue i:nth-of-type(5){left:76%;--h:82%}
.solution-art--ops { display: grid; place-items: center; background: #beadff; }
.solution-art--ops span { position: absolute; width: 115px; height: 115px; border: 2px solid #332854; border-radius: 30%; transform: rotate(45deg); }
.solution-art--ops span:nth-child(2) { width: 75px; height: 75px; animation: spin-slow 12s linear infinite reverse; }
.solution-art--ops span:nth-child(3) { width: 26px; height: 26px; background: #332854; }
.solution-art--service { display: grid; place-items: center; background: #ffc07c; }
.wave { width: 78%; height: 80px; background: repeating-linear-gradient(90deg, #44271e 0 3px, transparent 3px 10px); clip-path: polygon(0 46%,5% 35%,10% 60%,15% 25%,20% 72%,25% 40%,30% 55%,35% 10%,40% 82%,45% 34%,50% 62%,55% 20%,60% 74%,65% 42%,70% 57%,75% 30%,80% 67%,85% 38%,90% 55%,95% 44%,100% 50%,100% 53%,95% 53%,90% 60%,85% 46%,80% 71%,75% 36%,70% 62%,65% 48%,60% 80%,55% 26%,50% 67%,45% 40%,40% 88%,35% 16%,30% 62%,25% 45%,20% 78%,15% 31%,10% 66%,5% 40%,0 52%); }
.solution-copy { display: flex; flex-direction: column; justify-content: space-between; padding: 28px; }
.solution-copy > span { color: #6d6869; font-size: .75rem; text-transform: uppercase; letter-spacing: .1em; }
.solution-copy h3 { margin: auto 0 30px; font-size: clamp(1.7rem, 3vw, 3.2rem); font-weight: 500; line-height: 1; letter-spacing: -.04em; }
.solution-copy button { width: max-content; padding: 0; border: 0; border-bottom: 1px solid rgba(16,16,18,.35); background: transparent; color: var(--color-bg); font-size: .8rem; }

.technology { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; max-width: var(--container); margin: auto; padding: var(--space-section) 24px; gap: clamp(50px, 8vw, 130px); }
.studio-visual { position: relative; display: grid; place-items: center; aspect-ratio: 1; overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: radial-gradient(circle at 50% 50%, rgba(255,91,120,.25), transparent 24%), radial-gradient(circle at 20% 10%, rgba(146,116,255,.18), transparent 35%), #171619; }
.studio-core { position: relative; z-index: 2; display: grid; place-items: center; width: 180px; height: 180px; border-radius: 50%; background: var(--color-text); color: var(--color-bg); text-align: center; box-shadow: 0 0 70px rgba(255,91,120,.25); }
.studio-core img { width: 36px; margin-bottom: 8px; filter: invert(1); }
.studio-core span { font-size: .8rem; line-height: 1.2; }
.orbit { position: absolute; border: 1px solid rgba(247,244,239,.18); border-radius: 50%; }
.orbit--one { width: 58%; height: 58%; animation: spin-slow 18s linear infinite; }
.orbit--two { width: 88%; height: 88%; border-style: dashed; animation: spin-slow 34s linear infinite reverse; }
.orbit::after { content: ""; position: absolute; top: 50%; left: -5px; width: 10px; height: 10px; border-radius: 50%; background: var(--color-accent); box-shadow: 0 0 20px var(--color-accent); }
.orbit-label { position: absolute; padding: 7px 10px; border: 1px solid var(--color-border); border-radius: 8px; background: var(--color-surface); color: var(--color-text-muted); font-size: .7rem; }
.orbit-label--data { top: 17%; left: 16%; }.orbit-label--policy { right: 12%; top: 35%; }.orbit-label--models { bottom: 15%; left: 24%; }
.studio-copy h2 { margin-bottom: 34px; }
.studio-copy > p:not(.eyebrow) { max-width: 600px; color: var(--color-text-muted); font-size: 1.05rem; }
.studio-copy ul { padding: 0; margin: 42px 0; list-style: none; border-top: 1px solid var(--color-border); }
.studio-copy li { padding: 17px 0; border-bottom: 1px solid var(--color-border); }
.studio-copy li span { display: inline-block; width: 52px; color: var(--color-accent); font-size: .7rem; }

.closing { padding: 24px 24px 70px; }
.closing-inner { position: relative; max-width: var(--container); min-height: 620px; margin: auto; padding: clamp(50px,8vw,110px); overflow: hidden; border-radius: var(--radius-lg); background: radial-gradient(circle at 75% 20%, rgba(255,168,104,.84), transparent 27%), radial-gradient(circle at 25% 85%, rgba(146,116,255,.48), transparent 34%), linear-gradient(135deg,#872942,#2b1936 68%,#101012); }
.closing-inner::after { content: ""; position: absolute; right: -8%; bottom: -50%; width: 58%; aspect-ratio: 1; border: 1px solid rgba(247,244,239,.25); border-radius: 50%; box-shadow: 0 0 0 50px rgba(247,244,239,.025),0 0 0 100px rgba(247,244,239,.02); }
.closing h2 { position: relative; z-index: 1; max-width: 1050px; }
.closing-actions { position: relative; z-index: 1; display: flex; gap: 12px; margin-top: 48px; }

.site-footer { max-width: var(--container); margin: auto; padding: 70px 24px 30px; }
.footer-lead { display: flex; justify-content: space-between; align-items: end; padding-bottom: 64px; border-bottom: 1px solid var(--color-border); }
.footer-lead p { max-width: 280px; margin: 0; color: var(--color-text-muted); text-align: right; }
.footer-links { display: grid; grid-template-columns: 1fr 1fr 1fr; padding: 58px 0 80px; gap: 40px; }
.footer-links div { display: flex; flex-direction: column; align-items: flex-start; gap: 11px; }
.footer-links span { margin-bottom: 10px; color: #6f6c70; font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; }
.footer-links a, .footer-links button { padding: 0; border: 0; background: none; color: var(--color-text-muted); transition: color var(--transition-base); }
.footer-links a:hover, .footer-links button:hover { color: var(--color-text); }
.footer-bottom { display: flex; justify-content: space-between; padding-top: 23px; border-top: 1px solid var(--color-border); color: #777479; font-size: .72rem; }

.modal { position: fixed; inset: 0; z-index: 500; display: grid; place-items: center; padding: 20px; }
.modal[hidden] { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.72); backdrop-filter: blur(10px); animation: fade-in 250ms ease both; }
.modal-panel { position: relative; z-index: 1; width: min(560px,100%); padding: 46px; border: 1px solid var(--color-border); border-radius: 28px; background: #201f22; box-shadow: 0 30px 90px rgba(0,0,0,.5); animation: modal-in 420ms cubic-bezier(.22,1,.36,1) both; }
.modal-panel h2 { margin-bottom: 20px; font-size: clamp(2.5rem,6vw,4.5rem); font-weight: 500; line-height: .95; letter-spacing: -.04em; }
.modal-panel > p:not(.eyebrow) { margin-bottom: 30px; color: var(--color-text-muted); }
.modal-close { position: absolute; top: 18px; right: 18px; width: 38px; height: 38px; border: 1px solid var(--color-border); border-radius: 50%; background: transparent; font-size: 1.35rem; }