/* ═══════════════════════════════════════════
   SYNESIS — Landing Page Stylesheet
   Creative Direction: Pentagram (Enhanced)
   v1.1 — February 2026
═══════════════════════════════════════════ */

/* ─── Design Tokens ─────────────────────── */
:root {
  /* Primary */
  --color-navy:         #1A3A5C;
  --color-white-paper:  #F7F4EF;

  /* Secondary */
  --color-slate:        #3D5A7A;
  --color-sage:         #4A6741;
  --color-terracotta:   #8B4A3C;
  --color-gold:         #A8905A;

  /* Neutrals */
  --color-ink:          #1C1C1E;
  --color-ink-mid:      #3A3A3C;
  --color-ref-mid:      #6B6B70;
  --color-doc-light:    #AEAEB2;
  --color-paper-tint:   #E5E1DA;

  /* Accents */
  --color-amber:        #C8963A;
  --color-signal-blue:  #2B6CB0;

  /* Typography */
  --font-serif:    'Newsreader', Georgia, serif;
  --font-sans:     'IBM Plex Sans', system-ui, sans-serif;
  --font-mono:     'IBM Plex Mono', 'Courier New', monospace;

  /* Spacing */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  2rem;
  --space-lg:  4rem;
  --space-xl:  8rem;

  /* Layout */
  --max-width:        1180px;
  --max-width-narrow: 760px;
  --radius-sm:        4px;
  --radius-md:        12px; /* Smoother radius */
  
  /* Shadows */
  --shadow-subtle:    0 4px 12px rgba(26,58,92,0.06);
  --shadow-hover:     0 12px 32px rgba(26,58,92,0.12);
}

/* ─── Reset & Base ───────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 80px; /* Offset for fixed nav */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-white-paper);
  color: var(--color-ink);
  line-height: 1.6;
}

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

a {
  color: inherit;
  text-decoration: none;
}

/* ─── Animations ─────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ─── Navigation ─────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 244, 239, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(229, 225, 218, 0.6);
  transition: all 0.3s ease;
}

.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.nav__logo:hover { opacity: 0.8; }

.nav__logo-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.nav__logo-wordmark {
  font-family: var(--font-serif);
  font-optical-sizing: auto;
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-ink);
}

.nav__logo-s {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--color-navy);
}

.nav__links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav__links a {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--color-ink-mid);
  transition: color 0.2s ease, transform 0.2s ease;
  display: inline-block;
}

.nav__links a:hover { 
  color: var(--color-navy); 
  transform: translateY(-1px);
}

.nav__link--docs {
  font-weight: 500 !important;
  color: var(--color-navy) !important;
  background: rgba(26,58,92,0.06);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
}
.nav__link--docs:hover {
  background: rgba(26,58,92,0.1);
}

/* ─── Buttons ────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-navy);
  color: var(--color-white-paper);
  border: 1.5px solid var(--color-navy);
  box-shadow: 0 4px 12px rgba(26,58,92,0.15);
}

.btn--primary:hover {
  background: var(--color-slate);
  border-color: var(--color-slate);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(26,58,92,0.25);
}

.btn--secondary {
  background: transparent;
  color: var(--color-navy);
  border: 1.5px solid var(--color-navy);
}

.btn--secondary:hover {
  background: var(--color-navy);
  color: var(--color-white-paper);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(26,58,92,0.15);
}

.btn--amber {
  background: var(--color-amber);
  color: #fff;
  border: 1.5px solid var(--color-amber);
  font-size: 1rem;
  padding: 0.875rem 2rem;
  box-shadow: 0 4px 12px rgba(200, 150, 58, 0.2);
}

.btn--amber:hover {
  background: #b5822f;
  border-color: #b5822f;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200, 150, 58, 0.3);
}

/* ─── Tags / Pills ───────────────────────── */
.tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
  border: 1px solid var(--color-paper-tint);
  background: rgba(255,255,255,0.8);
  color: var(--color-ref-mid);
}

.tag--mono {
  font-family: var(--font-mono);
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-navy);
  border-color: rgba(26,58,92,0.15);
  background: rgba(26,58,92,0.06);
}

/* ─── Hero ───────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  padding: var(--space-xl) var(--space-md);
  padding-bottom: var(--space-lg);
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 1px 1px, var(--color-paper-tint) 1px, transparent 0);
  background-size: 24px 24px;
  opacity: 0.9;
  pointer-events: none;
  /* Fades out the grid near the edges for a smoother look */
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}

.hero__inner {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

/* Staggered entrance animations */
.hero__eyebrow { 
  display: flex; align-items: center; gap: var(--space-xs); margin-bottom: var(--space-md); flex-wrap: wrap;
  animation: fadeUp 0.8s ease-out forwards; opacity: 0;
}
.hero__headline { 
  font-family: var(--font-serif); font-optical-sizing: auto; font-size: clamp(3.5rem, 8vw, 7rem); font-weight: 300; line-height: 1.05; color: var(--color-ink); margin-bottom: var(--space-md); max-width: 780px; letter-spacing: -0.02em;
  animation: fadeUp 0.8s ease-out 0.1s forwards; opacity: 0;
}
.hero__headline em { font-style: italic; color: var(--color-navy); }
.hero__sub {
  font-family: var(--font-serif); font-optical-sizing: auto; font-size: clamp(1.0625rem, 2vw, 1.3125rem); font-weight: 300; font-style: italic; line-height: 1.65; color: var(--color-ink-mid); max-width: 640px; margin-bottom: var(--space-md);
  animation: fadeUp 0.8s ease-out 0.2s forwards; opacity: 0;
}
.hero__cta-group { 
  display: flex; gap: var(--space-sm); flex-wrap: wrap; margin-bottom: var(--space-lg);
  animation: fadeUp 0.8s ease-out 0.3s forwards; opacity: 0;
}
.hero__code-block {
  animation: fadeUp 0.8s ease-out 0.4s forwards; opacity: 0;
}

/* ─── Code Block ─────────────────────────── */
.hero__code-block {
  max-width: 680px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(26, 58, 92, 0.2);
  box-shadow:
    0 10px 30px -10px rgba(26,58,92,0.2),
    0 40px 80px -20px rgba(26,58,92,0.15);
  background: rgba(15, 25, 35, 0.95);
  backdrop-filter: blur(8px);
}

.code-block__header {
  display: flex;
  align-items: center;
  padding: 0.75rem 1rem;
  background: #1F2D3D;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.code-block__controls {
  display: flex;
  gap: 6px;
}

.code-block__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.code-block__dot--red { background: #FF5F56; }
.code-block__dot--yellow { background: #FFBD2E; }
.code-block__dot--green { background: #27C93F; }

.code-block__filename {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: rgba(255,255,255,0.6);
  margin-left: 12px;
  font-weight: 500;
}

.code-block__body {
  margin: 0;
  padding: 1.5rem;
  overflow-x: auto;
}

.code-block__body code {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.7;
  color: #C8D6E5;
  white-space: pre;
}

/* Syntax highlighting */
.syn-keyword { color: #C8963A; font-weight: 500; }
.syn-string  { color: #7EC8A0; }
.syn-ref     { color: #7BB8E8; }
.syn-value   { color: #C8963A; }
.syn-op      { color: #E5E1DA; opacity: 0.7; }

.code-block__output {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: rgba(74, 103, 65, 0.2);
  border-top: 1px solid rgba(74, 103, 65, 0.4);
}

.output__icon {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: #7EC8A0;
}

.output__text {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: rgba(200, 214, 229, 0.85);
  font-weight: 500;
}

/* ─── Sections ───────────────────────────── */
.section {
  padding: var(--space-xl) var(--space-md);
}

.section--light { background: var(--color-white-paper); }

.section--dark { background: var(--color-navy); }

.section--cta {
  background: #0F1923;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-top: 1px solid rgba(200, 150, 58, 0.15);
}

/* Subtle texture on CTA */
.section--cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 16px 16px;
  pointer-events: none;
}

.section__inner { max-width: var(--max-width); margin: 0 auto; position: relative; }
.section__inner--narrow { max-width: var(--max-width-narrow); }

.section__label {
  font-family: var(--font-sans); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-amber); margin-bottom: var(--space-sm);
}
.section__label--light { color: rgba(200, 150, 58, 0.9); }

.section__headline {
  font-family: var(--font-serif); font-optical-sizing: auto; font-size: clamp(2rem, 4vw, 3rem); font-weight: 300; line-height: 1.2; color: var(--color-ink); margin-bottom: var(--space-md); letter-spacing: -0.01em;
}
.section__headline--light { color: var(--color-white-paper); }
.section__headline em { font-style: italic; color: var(--color-amber); }

.section__body {
  font-family: var(--font-serif); font-optical-sizing: auto; font-size: 1.0625rem; line-height: 1.7; color: var(--color-ink-mid); max-width: 640px; margin-bottom: var(--space-sm);
}
.section__body strong { color: var(--color-ink); font-weight: 600; }

/* ─── Comparison Grid ────────────────────── */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: var(--space-lg);
  max-width: 720px;
}

.compare-grid__col {
  padding: 2rem;
  border-radius: var(--radius-md);
  transition: transform 0.3s ease;
}

.compare-grid__col:hover { transform: translateY(-2px); }

.compare-grid__col--them {
  background: rgba(174, 174, 178, 0.08);
  border: 1px solid rgba(174, 174, 178, 0.2);
}

.compare-grid__col--us {
  background: rgba(26, 58, 92, 0.03);
  border: 1px solid rgba(26, 58, 92, 0.15);
  box-shadow: var(--shadow-subtle);
}

.compare-grid__head {
  font-family: var(--font-sans); font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 1.25rem; color: var(--color-ref-mid);
}

.compare-grid__col--us .compare-grid__head { color: var(--color-navy); }

.compare-grid__list { list-style: none; display: flex; flex-direction: column; gap: 0.75rem; }
.compare-grid__list li {
  font-family: var(--font-sans); font-size: 0.9375rem; color: var(--color-ink-mid); padding-left: 1.5rem; position: relative; line-height: 1.5;
}

.compare-grid__col--them .compare-grid__list li::before {
  content: '×'; position: absolute; left: 0; top: -2px; color: var(--color-terracotta); font-weight: 500; font-size: 1.1rem;
}

.compare-grid__col--us .compare-grid__list li::before {
  content: '→'; position: absolute; left: 0; color: var(--color-amber); font-family: var(--font-mono); font-size: 0.875rem; top: 2px;
}

.compare-grid__col--us .compare-grid__list li { color: var(--color-ink); font-weight: 400; }

/* ─── Steps ──────────────────────────────── */
.steps {
  display: flex; align-items: stretch; gap: var(--space-sm); margin-top: var(--space-lg); flex-wrap: wrap;
}

.step {
  flex: 1; min-width: 200px; padding: 2rem; background: rgba(255,255,255,0.03); border: 1px solid rgba(247,244,239,0.1); border-radius: var(--radius-md); transition: all 0.3s ease;
}

.step:hover {
  transform: translateY(-4px); background: rgba(255,255,255,0.06); border-color: rgba(247,244,239,0.25);
}

.step__number {
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--color-amber); margin-bottom: 1rem; letter-spacing: 0.05em; font-weight: 500;
}

.step__title {
  font-family: var(--font-serif); font-optical-sizing: auto; font-size: 1.25rem; font-weight: 500; color: var(--color-white-paper); margin-bottom: 0.75rem;
}

.step__body {
  font-family: var(--font-sans); font-size: 0.9375rem; line-height: 1.65; color: rgba(247, 244, 239, 0.7);
}

.step__arrow {
  font-family: var(--font-mono); font-size: 1.5rem; color: rgba(200, 150, 58, 0.3); flex-shrink: 0; margin-top: 2.5rem; align-self: center;
}

/* ─── Ecosystem Grid ─────────────────────── */
.eco-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; margin-top: var(--space-lg);
}

.eco-card {
  padding: 2rem; border: 1px solid var(--color-paper-tint); border-radius: var(--radius-md); background: #fff; transition: all 0.3s ease; display: flex; flex-direction: column;
}

.eco-card:hover {
  transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(26,58,92,0.2);
}

.eco-card__icon { width: 44px; height: 44px; margin-bottom: 1.25rem; transition: transform 0.3s ease; }
.eco-card:hover .eco-card__icon { transform: scale(1.05); }
.eco-card__icon svg { width: 100%; height: 100%; }

.eco-card__title {
  font-family: var(--font-serif); font-optical-sizing: auto; font-size: 1.125rem; font-weight: 500; color: var(--color-ink); margin-bottom: 0.75rem;
}

.eco-card__body {
  font-family: var(--font-sans); font-size: 0.9375rem; line-height: 1.65; color: var(--color-ref-mid);
}

.eco-card__body code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--color-navy);
  background: rgba(26,58,92,0.06);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

.eco-card__screenshot {
  margin-top: auto;
  padding-top: 1.25rem;
}

.eco-card__screenshot img {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--color-paper-tint);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  transition: box-shadow 0.3s ease;
}

.eco-card:hover .eco-card__screenshot img {
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}

/* ─── CTA Section ────────────────────────── */
.cta-graph { width: 90px; margin: 0 auto var(--space-md); opacity: 0.8; }
.cta__headline {
  font-family: var(--font-serif); font-optical-sizing: auto; font-size: clamp(2rem, 4vw, 3rem); font-weight: 300; color: var(--color-white-paper); line-height: 1.2; margin-bottom: var(--space-sm);
}
.cta__sub {
  font-family: var(--font-sans); font-size: 1.0625rem; color: rgba(247,244,239,0.65); margin-bottom: var(--space-md); line-height: 1.6;
}

/* ─── Footer ─────────────────────────────── */
.footer {
  border-top: 1px solid var(--color-paper-tint); padding: var(--space-md); background: var(--color-white-paper);
}

.footer__inner {
  max-width: var(--max-width); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--space-sm);
}

.footer__logo {
  display: flex; align-items: center; gap: 10px; font-family: var(--font-serif); font-size: 1rem; color: var(--color-ref-mid);
}

.footer__nav {
  display: none;
}

.footer__links { display: flex; gap: var(--space-md); }
.footer__links a {
  font-family: var(--font-sans); font-size: 0.9375rem; color: var(--color-ref-mid); transition: color 0.2s ease;
}
.footer__links a:hover { color: var(--color-navy); }

.footer__legal {
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--color-doc-light); width: 100%; margin-top: var(--space-xs);
}

/* ─── Responsive ─────────────────────────── */
@media (max-width: 820px) {
  .nav__links { display: none; }
  .hero { padding: var(--space-lg) var(--space-sm); min-height: auto; }
  .section { padding: var(--space-lg) var(--space-sm); }
  .compare-grid { grid-template-columns: 1fr; }
  .steps { flex-direction: column; }
  .step__arrow { display: none; }
  .step__number { font-size: 1rem; font-weight: 600; }
  .footer__inner { flex-direction: column; align-items: flex-start; }
  .footer__nav {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    width: 100%;
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-paper-tint);
    margin-bottom: var(--space-xs);
  }
  .footer__nav a {
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: var(--color-ink-mid);
    transition: color 0.2s ease;
  }
  .footer__nav a:hover { color: var(--color-navy); }
  .footer__links { flex-wrap: wrap; }
}

@media (max-width: 480px) {
  .hero__cta-group { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .eco-grid { grid-template-columns: 1fr; }
  .hero__headline { font-size: 2.75rem; }
}