/* InnovAI Solutions — marketing site
   Dark-first product identity. Not a portfolio clone. */

:root {
  --bg: #05070b;
  --bg-2: #080b12;
  --surface: #0c111a;
  --surface-2: #111824;
  --ink: #e9eef5;
  --ink-soft: #c5cedb;
  --muted: #8b95a8;
  --line: rgba(233, 238, 245, 0.08);
  --line-strong: rgba(233, 238, 245, 0.16);
  --accent: #3ee0c8;
  --accent-hover: #62ead4;
  --accent-ink: #04221c;
  --accent-dim: rgba(62, 224, 200, 0.14);
  --violet: #8b7cff;
  --violet-dim: rgba(139, 124, 255, 0.2);
  --danger: #ff7a86;
  --ok: #3ee0c8;
  --glow: rgba(62, 224, 200, 0.28);
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.48);
  --header-h: 76px;
  --radius: 16px;
  --radius-sm: 10px;
  --wrap: 1120px;
  --font-display: "Sora", ui-sans-serif, system-ui, sans-serif;
  --font-body: "IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  color-scheme: dark;
}

[data-theme="light"] {
  --bg: #eef1f5;
  --bg-2: #e4e9ef;
  --surface: #ffffff;
  --surface-2: #f6f8fb;
  --ink: #0c1220;
  --ink-soft: #243044;
  --muted: #4d5a6c;
  --line: rgba(12, 18, 32, 0.09);
  --line-strong: rgba(12, 18, 32, 0.16);
  --accent: #0b8f80;
  --accent-hover: #08756a;
  --accent-ink: #ffffff;
  --accent-dim: rgba(11, 143, 128, 0.12);
  --violet: #5648d4;
  --violet-dim: rgba(86, 72, 212, 0.14);
  --danger: #c42b3a;
  --ok: #0b8f80;
  --glow: rgba(11, 143, 128, 0.18);
  --shadow: 0 24px 56px rgba(12, 18, 32, 0.1);
  color-scheme: light;
}

[data-theme="light"] .theme-icon-moon { display: none; }
[data-theme="light"] .theme-icon-sun { display: block; }
.theme-icon-sun { display: none; }

*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

html:not(.intro-done) {
  overflow: hidden;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover { color: var(--accent-hover); }

:focus { outline: none; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0.55rem 0.9rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
}

.skip-link:focus {
  top: 0.75rem;
}

.wrap {
  width: min(calc(100% - 2.5rem), var(--wrap));
  margin-inline: auto;
}

.kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.85rem;
}

.kicker-center { text-align: center; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.12;
  color: var(--ink);
  margin: 0;
}

h1 { font-size: clamp(2.35rem, 5.6vw, 4.35rem); font-weight: 600; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.45rem); }
h3 { font-size: 1.2rem; letter-spacing: -0.025em; }

p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

.lede {
  color: var(--muted);
  font-size: 1.125rem;
  max-width: 38rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 2.75rem;
  padding: 0.65rem 1.2rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
  cursor: pointer;
  color: var(--ink);
  background: transparent;
  transition: transform 0.25s var(--ease), background 0.2s, border-color 0.2s, color 0.2s, box-shadow 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 0 0 0 var(--glow), 0 10px 28px var(--glow);
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--accent-ink);
  transform: translateY(-1px);
}

.btn-ghost {
  border-color: var(--line-strong);
  color: var(--ink-soft);
  background: color-mix(in srgb, var(--surface) 60%, transparent);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--ink);
}

.btn-sm {
  min-height: 2.35rem;
  padding: 0.4rem 1rem;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 0.875rem;
}

.btn-sm:hover {
  background: var(--accent-hover);
  color: var(--accent-ink);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Intro */
.intro {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  background: var(--bg);
  color: var(--ink);
  pointer-events: auto;
  opacity: 1;
  transition: opacity 0.55s var(--ease), visibility 0.55s;
}

.intro-done .intro,
.intro.is-out {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.intro-line {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.4vw, 2.2rem);
  letter-spacing: -0.03em;
  margin: 0;
  animation: intro-in 0.9s var(--ease) both;
}

.intro-skip {
  position: absolute;
  right: 1.25rem;
  bottom: 1.25rem;
  background: none;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.5rem 0.8rem;
  border-radius: 999px;
  cursor: pointer;
}

.intro-skip:hover { color: var(--ink); border-color: var(--accent); }

@keyframes intro-in {
  from { opacity: 0; transform: translateY(10px); filter: blur(6px); }
  to { opacity: 1; transform: none; filter: none; }
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  border-bottom: 1px solid transparent;
  transition: height 0.3s var(--ease), border-color 0.3s, background 0.3s;
}

.site-header.is-condensed {
  --header-h: 60px;
  border-bottom-color: var(--line);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
}

.header-inner {
  width: min(calc(100% - 2.5rem), var(--wrap));
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.wordmark {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  text-decoration: none;
  color: var(--ink);
  flex-shrink: 0;
}

.wordmark:hover { color: var(--ink); }

.wordmark-ia {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.04em;
}

.wordmark-quiet {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.92rem;
  color: var(--muted);
  letter-spacing: -0.02em;
}

.nav { margin-left: auto; }

.nav-list {
  list-style: none;
  display: flex;
  gap: 0.15rem;
  margin: 0;
  padding: 0;
}

.nav-list a {
  display: block;
  padding: 0.45rem 0.7rem;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 8px;
}

.nav-list a:hover { color: var(--ink); }

.nav-list a[aria-current="location"] {
  color: var(--ink);
  background: var(--accent-dim);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.theme-toggle {
  width: 2.35rem;
  height: 2.35rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink-soft);
  cursor: pointer;
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.05rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  line-height: 1;
  flex-shrink: 0;
}

.lang-btn {
  appearance: none;
  background: transparent;
  border: 0;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  letter-spacing: inherit;
  padding: 0.4rem 0.38rem;
  min-height: 2.35rem;
  border-radius: 6px;
}

.lang-btn:hover {
  color: var(--ink);
}

.lang-btn.is-active,
.lang-btn[aria-pressed="true"] {
  color: var(--accent);
}

.lang-sep {
  color: var(--muted);
  opacity: 0.45;
  padding: 0 0.05rem;
  user-select: none;
  pointer-events: none;
}

/* Hero */
.hero {
  position: relative;
  isolation: isolate;
  min-height: min(92vh, 820px);
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(900px 480px at 80% -10%, var(--violet-dim), transparent 60%),
    radial-gradient(700px 500px at 10% 90%, var(--accent-dim), transparent 55%),
    var(--bg);
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.hero-vignette {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(to bottom, color-mix(in srgb, var(--bg) 20%, transparent), transparent 22%, transparent 70%, var(--bg)),
    repeating-linear-gradient(
      0deg,
      color-mix(in srgb, var(--ink) 4.5%, transparent) 0 1px,
      transparent 1px 56px
    ),
    repeating-linear-gradient(
      90deg,
      color-mix(in srgb, var(--ink) 4.5%, transparent) 0 1px,
      transparent 1px 56px
    );
  mask-image: radial-gradient(ellipse at 50% 42%, #000 20%, transparent 72%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(calc(100% - 2.5rem), 44rem);
  text-align: left;
  padding: 5.5rem 0 4.5rem;
}

.hero-sub {
  margin-top: 1.25rem;
  color: var(--ink-soft);
  font-size: 1.15rem;
  max-width: 36rem;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

#hero-cta {
  will-change: transform;
}

/* Proof */
.proof {
  border-block: 1px solid var(--line);
  background: var(--bg-2);
  padding: 1.75rem 0;
}

.proof-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 0.5rem 0 0;
  padding: 0;
  text-align: center;
}

.proof-list li {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: -0.03em;
  color: var(--ink-soft);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.55rem;
}

.proof-mark {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 12px var(--glow);
}

/* Sections */
.section {
  padding: 5.5rem 0;
}

.section-alt {
  background: var(--bg-2);
  border-block: 1px solid var(--line);
}

.section-head { margin-bottom: 2.4rem; }
.section-head h2 { margin-bottom: 0.85rem; }

/* Cards */
.card-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem 1.45rem 1.6rem;
  min-height: 12.5rem;
  transform-style: preserve-3d;
  transition: transform 0.35s var(--ease), border-color 0.25s, box-shadow 0.35s;
  box-shadow: 0 0 0 0 transparent;
}

.card:hover,
.card:focus-within {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  box-shadow: var(--shadow), 0 0 0 1px color-mix(in srgb, var(--accent) 18%, transparent);
}

@media (hover: hover) and (pointer: fine) {
  .card:hover {
    transform: translateY(-6px);
  }
}

.card-index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin: 0 0 1.1rem;
}

.card h3 { margin-bottom: 0.55rem; }
.card p { color: var(--muted); }

/* Approach */
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.1rem;
  counter-reset: none;
}

.step {
  padding: 1.25rem 0.15rem 0;
  border-top: 1px solid var(--line-strong);
  position: relative;
}

.step::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 2.4rem;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.7s var(--ease);
}

.step.is-in::before { transform: scaleX(1); }

.step-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  display: block;
  margin-bottom: 0.85rem;
}

.step h3 { margin-bottom: 0.5rem; }
.step p { color: var(--muted); font-size: 0.98rem; }

/* Industries */
.industry-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.industry {
  padding: 1.6rem 1.4rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
}

.industry h3 { margin-bottom: 0.55rem; }
.industry p { color: var(--muted); }

/* About */
.about-grid {
  display: grid;
  grid-template-columns: minmax(180px, 280px) 1fr;
  gap: 3rem;
  align-items: center;
}

.about-mark {
  color: var(--muted);
}

.portrait-mark {
  width: 100%;
  height: auto;
  background:
    radial-gradient(circle at 30% 20%, var(--violet-dim), transparent 50%),
    radial-gradient(circle at 70% 80%, var(--accent-dim), transparent 50%),
    var(--surface);
  border-radius: 32px;
}

.mark-cyan { color: var(--accent); }
.mark-violet { color: var(--violet); }
.mark-muted { color: var(--muted); }
.mark-frame { color: var(--line-strong); }

.mark-mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  fill: var(--muted);
}

.about-copy p { color: var(--ink-soft); max-width: 38rem; }
.about-copy h2 { margin-bottom: 1rem; }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 2.5rem;
  align-items: start;
}

.contact-form {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  padding: 1.5rem;
  display: grid;
  gap: 1rem;
}

.field { display: grid; gap: 0.4rem; }

.field label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink-soft);
}

.field input,
.field textarea {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.8rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field textarea { resize: vertical; min-height: 8rem; }

.field input:hover,
.field textarea:hover { border-color: color-mix(in srgb, var(--accent) 40%, var(--line-strong)); }

.field input:focus-visible,
.field textarea:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.field-error {
  color: var(--danger);
  font-size: 0.82rem;
  margin: 0;
}

.field.is-invalid input,
.field.is-invalid textarea {
  border-color: var(--danger);
}

.honey {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem;
  margin-top: 0.25rem;
}

.form-status {
  margin: 0;
  font-size: 0.92rem;
  color: var(--muted);
}

.form-status.is-ok { color: var(--ok); }
.form-status.is-err { color: var(--danger); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0 2.4rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-inner {
  display: grid;
  gap: 0.35rem;
}

.footer-brand { color: var(--ink-soft); margin: 0; font-weight: 500; }

.footer-meta { margin: 0; }

.footer-meta a {
  color: var(--muted);
  text-decoration: none;
}

.footer-meta a:hover { color: var(--accent); }

.footer-privacy { margin: 0.45rem 0 0; font-size: 0.82rem; }

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

.card-grid .reveal:nth-child(2) { transition-delay: 0.06s; }
.card-grid .reveal:nth-child(3) { transition-delay: 0.12s; }
.card-grid .reveal:nth-child(4) { transition-delay: 0.18s; }
.steps .reveal:nth-child(2) { transition-delay: 0.07s; }
.steps .reveal:nth-child(3) { transition-delay: 0.14s; }
.steps .reveal:nth-child(4) { transition-delay: 0.21s; }
.industry-grid .reveal:nth-child(2) { transition-delay: 0.08s; }
.industry-grid .reveal:nth-child(3) { transition-delay: 0.16s; }

/* Responsive */
@media (max-width: 980px) {
  .site-header {
    height: auto;
  }
  .header-inner {
    flex-wrap: wrap;
    row-gap: 0.35rem;
    padding: 0.7rem 0 0.55rem;
  }
  .nav {
    order: 3;
    margin-left: 0;
    width: 100%;
  }
  .nav-list {
    gap: 0;
    overflow-x: auto;
  }
  .nav-list a { padding: 0.35rem 0.55rem; font-size: 0.85rem; }
  .card-grid,
  .steps,
  .industry-grid,
  .about-grid,
  .contact-grid,
  .proof-list {
    grid-template-columns: 1fr;
  }
  .proof-list { gap: 1.1rem; }
  .about-mark { max-width: 220px; }
  .hero-inner { padding-top: 4rem; }
}

@media (max-width: 640px) {
  .wrap, .header-inner, .hero-inner { width: min(calc(100% - 1.5rem), var(--wrap)); }
  .wordmark-quiet { display: none; }
  .header-actions { gap: 0.4rem; }
  .section { padding: 3.75rem 0; }
  .card { min-height: 0; }
}

@media (min-width: 921px) and (max-width: 1100px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .hero-canvas { display: none; }

  .btn-primary:hover,
  .card:hover {
    transform: none;
  }
}