:root {
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

/* THEME TOKENS -------------------------------------------------- */
/* 1) Bright, energetic (DEFAULT) */
html[data-theme="bright-ignite"] {
  --bg-page: #fdfdfd;
  --bg-elevated: #ffffff;
  --bg-soft: #f5f7ff;
  --accent: #ff6b3d;
  --accent-soft: rgba(255, 107, 61, 0.1);
  --accent-strong: #e2481b;
  --border-subtle: #e2e6f0;
  --text-main: #1a202c;
  --text-soft: #4a5568;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.08);
  --radius-xl: 1.5rem;
}

/* 2) Dark, rich, traditional */
html[data-theme="classic-deep"] {
  --bg-page: #050816;
  --bg-elevated: #0b1020;
  --bg-soft: #111827;
  --accent: #fbbf24;
  --accent-soft: rgba(251, 191, 36, 0.14);
  --accent-strong: #f59e0b;
  --border-subtle: #1f2937;
  --text-main: #f9fafb;
  --text-soft: #9ca3af;
  --shadow-soft: 0 22px 60px rgba(0, 0, 0, 0.6);
  --radius-xl: 1.5rem;
}

/* 3) Modern, sharp, focused */
html[data-theme="modern-focus"] {
  --bg-page: #050816;
  --bg-elevated: #020617;
  --bg-soft: #0b1120;
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.12);
  --accent-strong: #0ea5e9;
  --border-subtle: #1e293b;
  --text-main: #f9fafb;
  --text-soft: #9ca3af;
  --shadow-soft: 0 24px 80px rgba(15, 23, 42, 0.7);
  --radius-xl: 1.5rem;
}

/* 4) Playful fresh (bright alternative) */
html[data-theme="fresh-lime"] {
  --bg-page: #f7fff9;
  --bg-elevated: #ffffff;
  --bg-soft: #ecfdf3;
  --accent: #16a34a;
  --accent-soft: rgba(22, 163, 74, 0.12);
  --accent-strong: #15803d;
  --border-subtle: #d4e4d8;
  --text-main: #052e16;
  --text-soft: #166534;
  --shadow-soft: 0 16px 40px rgba(22, 101, 52, 0.12);
  --radius-xl: 1.5rem;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text-main);
  background: radial-gradient(circle at top left, #fff7f3, var(--bg-page));
  -webkit-font-smoothing: antialiased;
}

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

.shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 4.5rem 0;
}

.section-alt {
  background: var(--bg-soft);
}

.section-head {
  max-width: 640px;
  margin-bottom: 2.5rem;
}

.section-head.tight {
  margin-bottom: 1.75rem;
}

.section-head h2 {
  font-size: clamp(1.9rem, 2.3vw, 2.35rem);
  margin: 0 0 0.4rem;
}

.section-head p {
  margin: 0;
  color: var(--text-soft);
}

/* HEADER -------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: color-mix(in srgb, var(--bg-page) 80%, transparent);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
}

.logo-wrap {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text-main);
}

.logo-icon {
  width: 34px;
  height: 34px;
}

.logo-text {
  font-weight: 650;
  letter-spacing: 0.03em;
  font-size: 0.98rem;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 0.92rem;
  text-decoration: none;
  color: var(--text-soft);
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.25rem;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  transition: width 0.18s ease-out;
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  width: 100%;
}

.nav-toggle {
  display: none;
}

/* Theme switcher */
.theme-switcher {
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  border: 1px solid color-mix(in srgb, var(--accent) 18%, var(--border-subtle));
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.78rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  cursor: pointer;
  white-space: nowrap;
}

/* HERO -------------------------------------------------- */
.hero {
  padding: 5rem 0 4.5rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 3rem;
  align-items: center;
}

.eyebrow {
  font-size: 0.83rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-strong);
  margin: 0 0 0.75rem;
}

.hero h1 {
  font-size: clamp(2.4rem, 4vw, 3rem);
  line-height: 1.02;
  margin: 0 0 0.75rem;
}

.hero-sub {
  margin: 0 0 1.5rem;
  color: var(--text-soft);
  font-size: 1.02rem;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-bottom: 0.85rem;
}

.btn {
  border-radius: 999px;
  padding: 0.7rem 1.35rem;
  border: 1px solid transparent;
  font-size: 0.96rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #ffffff;
  box-shadow: var(--shadow-soft);
}

.btn.ghost {
  background: transparent;
  border-color: var(--border-subtle);
  color: var(--text-main);
}

.reveal-panel {
  border-radius: 1rem;
  padding: 0.85rem 1rem;
  border: 1px dashed var(--border-subtle);
  background: var(--bg-soft);
  color: var(--text-soft);
  font-size: 0.92rem;
}

/* Hero media card */
.hero-image-card {
  background: var(--bg-elevated);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
  padding: 0.9rem;
  border: 1px solid var(--border-subtle);
}

.hero-image-card.small {
  max-width: 360px;
}

.hero-image-card img {
  border-radius: calc(var(--radius-xl) - 0.6rem);
}

.hero-image-card figcaption {
  margin-top: 0.65rem;
  font-size: 0.82rem;
  color: var(--text-soft);
}

/* PRODUCT CARDS -------------------------------------------------- */
.card-grid {
  display: grid;
  gap: 1.5rem;
}

.card-grid-7 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.info-card {
  background: var(--bg-elevated);
  border-radius: 1.3rem;
  padding: 1.25rem 1.3rem;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.12s ease-out, box-shadow 0.12s ease-out, border-color 0.12s ease-out;
}

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

.info-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
  border-color: color-mix(in srgb, var(--accent) 18%, var(--border-subtle));
}

.info-card-top h3 {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
}

.info-card-top .tagline {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-soft);
}

.info-card-more {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-soft);
  max-height: 0;
  opacity: 0;
  transform: translateY(6px);
  transition: max-height 0.18s ease-out, opacity 0.18s ease-out, transform 0.18s ease-out;
}

.info-card[data-expanded="true"] .info-card-more {
  max-height: 460px;
  opacity: 1;
  transform: translateY(0);
}

.info-card-more ul {
  padding-left: 1.1rem;
  margin: 0.4rem 0 0;
}

.portfolio-highlights {
  margin-top: 2.25rem;
  padding: 1.4rem 1.5rem;
  border-radius: 1.2rem;
  border: 1px dashed var(--border-subtle);
  background: var(--bg-soft);
}

.portfolio-highlights h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}

/* APPROACH -------------------------------------------------- */
.approach-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 2.5rem;
  align-items: center;
}

.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}

.steps li strong {
  display: block;
  margin-bottom: 0.2rem;
}

.steps li p {
  margin: 0;
  color: var(--text-soft);
}

/* WHY US -------------------------------------------------- */
.pillars-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.pillar {
  padding: 1.4rem 1.35rem;
  border-radius: 1.2rem;
  border: 1px solid var(--border-subtle);
  background: linear-gradient(145deg, var(--bg-elevated), var(--bg-soft));
}

.pillar h3 {
  margin: 0 0 0.4rem;
}

/* CONTACT -------------------------------------------------- */
.contact-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.9fr);
  gap: 2.5rem;
  align-items: flex-start;
}

.contact-form {
  display: grid;
  gap: 1.1rem;
}

.field {
  display: grid;
  gap: 0.3rem;
}

.field label {
  font-size: 0.9rem;
  font-weight: 500;
}

.field input,
.field textarea {
  border-radius: 0.8rem;
  border: 1px solid var(--border-subtle);
  padding: 0.6rem 0.8rem;
  font: inherit;
  background: #ffffff;
}

/* FOOTER -------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 1.8rem 0 2.1rem;
  background: color-mix(in srgb, var(--bg-soft) 80%, var(--bg-page));
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  font-size: 0.86rem;
  color: var(--text-soft);
}

/* RESPONSIVE -------------------------------------------------- */
@media (max-width: 900px) {
  .hero-inner,
  .approach-shell,
  .contact-shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-inner {
    gap: 2.2rem;
  }

  .card-grid-7,
  .pillars-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 720px) {
  .nav-links {
    position: absolute;
    top: 64px;
    right: 1.5rem;
    padding: 0.75rem 1rem;
    border-radius: 0.9rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
    flex-direction: column;
    gap: 0.85rem;
    display: none;
  }

  .nav-links[data-open="true"] {
    display: flex;
  }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.18rem;
    border: none;
    background: transparent;
    cursor: pointer;
    padding: 0.3rem;
  }

  .nav-toggle-bar {
    width: 18px;
    height: 2px;
    border-radius: 999px;
    background: var(--text-main);
  }

  .theme-switcher {
    display: none;
  }
}