styles.css

:root {
  --bg: #fffdf8;
  --bg-alt: #fff7ed;
  --surface: #ffffff;
  --surface-muted: #fff8f1;
  --text: #132139;
  --text-muted: #435670;
  --line: #e8ddcd;
  --accent: #f97316;
  --accent-deep: #dc5b0c;
  --accent-ink: #3a1a07;
  --cool: #0ea5b7;
  --grad-a: #ffe5b4;
  --grad-b: #ffc57d;
  --grad-c: #ff8a3d;
  --shadow-soft: 0 10px 30px rgba(32, 16, 4, 0.08);
  --shadow-mid: 0 18px 40px rgba(32, 16, 4, 0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --hero: clamp(2rem, 4vw, 4rem);
  --h2: clamp(1.6rem, 3vw, 2.5rem);
  --h3: clamp(1.1rem, 2.2vw, 1.35rem);
  --body: 1rem;
  --caption: 0.88rem;
  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #071120;
  --bg-alt: #0b1a2e;
  --surface: #101f35;
  --surface-muted: #132743;
  --text: #ecf2ff;
  --text-muted: #afc1db;
  --line: #2a3f60;
  --accent: #ff8f3d;
  --accent-deep: #eb6f22;
  --accent-ink: #ffe7d5;
  --cool: #34c7d4;
  --grad-a: #3d6ea5;
  --grad-b: #235a96;
  --grad-c: #1c487a;
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-mid: 0 18px 40px rgba(0, 0, 0, 0.42);
  color-scheme: dark;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  font-size: var(--body);
  line-height: 1.5;
  color: var(--text);
  background:
    radial-gradient(circle at 8% 10%, rgba(255, 197, 125, 0.28), transparent 42%),
    radial-gradient(circle at 88% 12%, rgba(14, 165, 183, 0.12), transparent 45%),
    linear-gradient(180deg, var(--bg), #ffffff 40%, #fffaf2 100%);
}

body.lightbox-open {
  overflow: hidden;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
}

.shell {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -48px;
  background: var(--text);
  color: #ffffff;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(8px);
  background: rgba(255, 252, 246, 0.76);
  border-bottom: 1px solid rgba(232, 221, 205, 0.7);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: var(--space-4);
}

.header-actions {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.theme-toggle {
  width: 40px;
  min-width: 40px;
  min-height: 40px;
  padding: 0;
  border-radius: 50%;
  position: relative;
  cursor: pointer;
}

.theme-toggle::before {
  content: "\2600";
  font-size: 0.95rem;
  line-height: 1;
}

[data-theme="dark"] .theme-toggle::before {
  content: "\263D";
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  font-family: "Sora", "Segoe UI", sans-serif;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-mark {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(130deg, var(--grad-a), var(--grad-c));
  box-shadow: 0 0 0 5px rgba(249, 115, 22, 0.15);
}

.main-nav {
  display: inline-flex;
  align-items: center;
  gap: var(--space-5);
}

.main-nav a {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
}

.main-nav a:hover {
  color: var(--text);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 999px;
  padding: 0 var(--space-5);
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button:active {
  transform: translateY(0);
}

.button:focus-visible,
.main-nav a:focus-visible,
details summary:focus-visible {
  outline: 3px solid rgba(249, 115, 22, 0.35);
  outline-offset: 2px;
}

.button-sm {
  min-height: 38px;
  padding: 0 var(--space-4);
  font-size: 0.9rem;
}

.button-primary {
  color: #ffffff;
  background: linear-gradient(130deg, var(--accent), var(--accent-deep));
  box-shadow: 0 14px 28px rgba(220, 91, 12, 0.28);
}

.button-primary:hover {
  box-shadow: 0 16px 30px rgba(220, 91, 12, 0.34);
}

.button-ghost {
  color: var(--accent-ink);
  border-color: rgba(249, 115, 22, 0.4);
  background: rgba(255, 255, 255, 0.75);
}

.button-ghost:hover {
  background: rgba(255, 243, 229, 0.9);
}

.button-outline {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.8);
}

.hero {
  padding: var(--space-8) 0 var(--space-7);
  display: grid;
  gap: var(--space-6);
  align-items: center;
  grid-template-columns: 1.1fr 1fr;
}

.eyebrow {
  display: inline-flex;
  margin: 0 0 var(--space-3);
  padding: var(--space-1) var(--space-3);
  border-radius: 999px;
  background: rgba(249, 115, 22, 0.12);
  color: var(--accent-ink);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Sora", "Segoe UI", sans-serif;
  line-height: 1.16;
  letter-spacing: -0.01em;
}

h1 {
  font-size: var(--hero);
  max-width: 18ch;
}

h2 {
  font-size: var(--h2);
  max-width: 22ch;
}

h3 {
  font-size: var(--h3);
}

p {
  margin: 0;
}

.hero-copy code,
.step-card code,
.install-hint code,
.faq p code {
  font-family: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
  font-size: 0.88em;
  padding: 0.08em 0.32em;
  border-radius: 6px;
  background: rgba(19, 33, 57, 0.08);
  color: #2c3d59;
}

.hero-lead,
.section-lead {
  margin-top: var(--space-4);
  color: var(--text-muted);
  max-width: 58ch;
}

.hero-actions {
  margin-top: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.hero-proof {
  margin: var(--space-5) 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  color: var(--text-muted);
}

.hero-proof li::before {
  content: "• ";
  color: var(--cool);
}

.hero-visual {
  margin: 0;
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  background: linear-gradient(170deg, rgba(255, 229, 180, 0.8), rgba(14, 165, 183, 0.1));
  box-shadow: var(--shadow-mid);
}

.hero-visual img {
  display: block;
  border-radius: calc(var(--radius-lg) - 6px);
  border: 1px solid rgba(230, 208, 180, 0.9);
  background: #fff;
}

.hero-visual figcaption {
  margin-top: var(--space-3);
  font-size: var(--caption);
  color: var(--text-muted);
}

.value-strip {
  padding: 0 0 var(--space-7);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.value-grid article {
  padding: var(--space-3) var(--space-2) 0;
  background: transparent;
  border: 0;
  border-top: 2px solid rgba(249, 115, 22, 0.35);
  border-radius: 0;
  box-shadow: none;
}

.value-grid h2 {
  font-size: 1.05rem;
  margin-bottom: var(--space-1);
}

.value-grid p {
  color: var(--text-muted);
  max-width: 30ch;
}

.section {
  padding: var(--space-7) 0;
}

.steps {
  margin: var(--space-6) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.step-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-soft);
}

.step-number {
  display: inline-flex;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  margin-bottom: var(--space-3);
  color: #ffffff;
  font-weight: 700;
  background: linear-gradient(150deg, var(--cool), #0b7896);
}

.step-card p {
  margin-top: var(--space-3);
  color: var(--text-muted);
}

.feature-grid {
  margin-top: var(--space-6);
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-soft);
}

.feature-card p {
  margin-top: var(--space-3);
  color: var(--text-muted);
}

.proof {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px dashed #e8d7bf;
  font-size: var(--caption);
  color: #6a4f2f;
}

.social-proof {
  background: linear-gradient(180deg, rgba(255, 247, 237, 0.5), rgba(255, 255, 255, 0.2));
  border-top: 1px solid rgba(232, 221, 205, 0.7);
  border-bottom: 1px solid rgba(232, 221, 205, 0.7);
}

.tool-section {
  background: linear-gradient(180deg, rgba(255, 247, 237, 0.45), rgba(255, 255, 255, 0.2));
  border-top: 1px solid rgba(232, 221, 205, 0.7);
  border-bottom: 1px solid rgba(232, 221, 205, 0.7);
}

.tool-grid {
  margin-top: var(--space-6);
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.tool-card {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #fffdfa;
  box-shadow: var(--shadow-soft);
}

.tool-card img {
  display: block;
  width: 100%;
  height: auto;
  cursor: zoom-in;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tool-card img:hover {
  transform: scale(1.01);
  box-shadow: 0 12px 24px rgba(32, 16, 4, 0.18);
}

.tool-card figcaption {
  padding: var(--space-3) var(--space-4);
  font-size: var(--caption);
  color: var(--text-muted);
  border-top: 1px solid #f0e6d8;
  text-align: center;
}

.quote-grid {
  margin-top: var(--space-6);
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.quote-card {
  margin: 0;
  padding: var(--space-5);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fffdfa;
  box-shadow: var(--shadow-soft);
}

.quote-card p {
  color: var(--text);
}

.quote-card cite {
  display: block;
  margin-top: var(--space-3);
  color: var(--text-muted);
  font-style: normal;
  font-size: var(--caption);
}

.stat-row {
  margin: var(--space-6) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.stat-row li {
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: #ffffff;
  padding: var(--space-4);
  text-align: center;
}

.stat-row strong {
  display: block;
  font-family: "Sora", "Segoe UI", sans-serif;
  font-size: 1.3rem;
}

.stat-row span {
  color: var(--text-muted);
  font-size: var(--caption);
}

.demo-section {
  background:
    radial-gradient(circle at 70% 20%, rgba(255, 197, 125, 0.25), transparent 45%),
    linear-gradient(180deg, #fffef9 0%, #fff8ef 100%);
}

.demo-grid {
  display: grid;
  align-items: center;
  gap: var(--space-6);
  grid-template-columns: 1fr 1.1fr;
}

.demo-frame {
  margin: 0;
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  background: #ffffff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-mid);
}

.demo-frame img {
  display: block;
  border-radius: var(--radius-md);
}

.demo-frame figcaption {
  margin-top: var(--space-3);
  font-size: var(--caption);
  color: var(--text-muted);
}

.demo-frame .code-block {
  margin: 0;
}

.code-block {
  margin: var(--space-5) 0 var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid #2b3854;
  background: #11213f;
  color: #e7edf7;
  box-shadow: var(--shadow-soft);
  overflow-x: auto;
}

.code-block code {
  display: block;
  margin: 0;
  font-family: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
  font-size: 0.9rem;
  line-height: 1.55;
  white-space: pre;
}

.install-hint {
  margin-top: var(--space-2);
  margin-bottom: var(--space-5);
  color: #685238;
  font-size: var(--caption);
}

.faq details {
  margin-top: var(--space-3);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  background: #ffffff;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
}

.faq p {
  margin-top: var(--space-3);
  color: var(--text-muted);
}

.final-shell {
  padding-top: var(--space-6);
}

.final-cta {
  background: linear-gradient(115deg, rgba(255, 229, 180, 0.65), rgba(255, 255, 255, 0.95) 55%);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--space-7);
  box-shadow: var(--shadow-mid);
}

.final-cta p {
  margin-top: var(--space-4);
  color: var(--text-muted);
  max-width: 58ch;
}

.pulse {
  animation: pulse 2.3s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 12px 26px rgba(220, 91, 12, 0.22);
  }
  50% {
    box-shadow: 0 18px 34px rgba(220, 91, 12, 0.38);
  }
}

.lightbox {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  background: rgba(18, 24, 39, 0.78);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
  z-index: 1000;
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.lightbox-frame {
  margin: 0;
  max-width: min(1100px, 92vw);
  max-height: 86vh;
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  background: #ffffff;
  box-shadow: 0 24px 60px rgba(12, 18, 29, 0.35);
  display: grid;
  gap: var(--space-3);
}

.lightbox-image {
  width: 100%;
  height: auto;
  max-height: 68vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  border: 1px solid rgba(232, 221, 205, 0.8);
}

.lightbox-close {
  position: absolute;
  top: var(--space-5);
  right: var(--space-5);
  border: none;
  border-radius: 999px;
  padding: 0 var(--space-4);
  height: 40px;
  font-weight: 600;
  background: #ffffff;
  color: var(--text);
  box-shadow: 0 10px 22px rgba(12, 18, 29, 0.2);
  cursor: pointer;
}

.lightbox-close:focus-visible {
  outline: 3px solid rgba(249, 115, 22, 0.35);
  outline-offset: 2px;
}

.site-footer {
  border-top: 1px solid rgba(232, 221, 205, 0.9);
  margin-top: var(--space-7);
  padding: var(--space-5) 0;
  background: rgba(255, 252, 246, 0.8);
}

.footer-shell {
  display: flex;
  gap: var(--space-4);
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: var(--caption);
}

.footer-links {
  display: inline-flex;
  gap: var(--space-4);
}

.footer-links a {
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
}

[data-theme="dark"] body {
  background:
    radial-gradient(circle at 8% 10%, rgba(61, 110, 165, 0.28), transparent 42%),
    radial-gradient(circle at 88% 12%, rgba(52, 199, 212, 0.12), transparent 45%),
    linear-gradient(180deg, #071120, #091a30 40%, #0a1b33 100%);
}

[data-theme="dark"] .site-header {
  background: rgba(10, 20, 36, 0.82);
  border-bottom: 1px solid rgba(42, 63, 96, 0.9);
}

[data-theme="dark"] .button-ghost {
  color: #ffe5cf;
  border-color: rgba(255, 143, 61, 0.5);
  background: rgba(16, 31, 53, 0.88);
}

[data-theme="dark"] .button-ghost:hover {
  background: rgba(22, 40, 67, 0.95);
}

[data-theme="dark"] .button-outline {
  color: #e3eeff;
  background: rgba(16, 31, 53, 0.8);
  border-color: var(--line);
}

[data-theme="dark"] .hero-visual {
  background: linear-gradient(170deg, rgba(31, 62, 102, 0.75), rgba(52, 199, 212, 0.12));
}

[data-theme="dark"] .hero-visual img {
  border: 1px solid rgba(42, 63, 96, 0.95);
  background: #0f213c;
}

[data-theme="dark"] .proof {
  border-top: 1px dashed #395174;
  color: #c3d0e7;
}

[data-theme="dark"] .social-proof {
  background: linear-gradient(180deg, rgba(14, 27, 48, 0.65), rgba(9, 20, 36, 0.5));
  border-top: 1px solid rgba(42, 63, 96, 0.8);
  border-bottom: 1px solid rgba(42, 63, 96, 0.8);
}

[data-theme="dark"] .tool-section {
  background: linear-gradient(180deg, rgba(14, 27, 48, 0.55), rgba(9, 20, 36, 0.35));
  border-top: 1px solid rgba(42, 63, 96, 0.8);
  border-bottom: 1px solid rgba(42, 63, 96, 0.8);
}

[data-theme="dark"] .tool-card,
[data-theme="dark"] .quote-card,
[data-theme="dark"] .stat-row li,
[data-theme="dark"] .demo-frame,
[data-theme="dark"] .faq details {
  background: #101f35;
}

[data-theme="dark"] .tool-card figcaption {
  border-top: 1px solid #2a3f60;
}

[data-theme="dark"] .demo-section {
  background:
    radial-gradient(circle at 70% 20%, rgba(61, 110, 165, 0.22), transparent 45%),
    linear-gradient(180deg, #081324 0%, #0b1a30 100%);
}

[data-theme="dark"] .install-hint {
  color: #c8d7ee;
}

[data-theme="dark"] .final-cta {
  background: linear-gradient(115deg, rgba(31, 62, 102, 0.5), rgba(16, 31, 53, 0.95) 55%);
}

[data-theme="dark"] .lightbox-frame {
  background: #0f1e34;
}

[data-theme="dark"] .lightbox-image {
  border: 1px solid rgba(42, 63, 96, 0.9);
}

[data-theme="dark"] .lightbox-close {
  background: #101f35;
  color: #e9f2ff;
}

[data-theme="dark"] .site-footer {
  border-top: 1px solid rgba(42, 63, 96, 0.92);
  background: rgba(8, 17, 32, 0.88);
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.js [data-reveal].in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero,
  .demo-grid {
    grid-template-columns: 1fr;
  }

  .value-grid,
  .steps,
  .feature-grid,
  .tool-grid,
  .quote-grid,
  .stat-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero {
    padding-top: var(--space-7);
  }
}

@media (max-width: 760px) {
  .main-nav {
    display: none;
  }

  .header-actions {
    width: 100%;
  }

  .value-grid,
  .steps,
  .feature-grid,
  .tool-grid,
  .quote-grid,
  .stat-row {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }

  .final-cta {
    padding: var(--space-6);
  }

  .footer-shell {
    flex-direction: column;
    align-items: flex-start;
  }

  .lightbox {
    padding: var(--space-4);
  }

  .lightbox-close {
    top: var(--space-4);
    right: var(--space-4);
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}