/* ---------- Fonts ---------- */

@font-face {
  font-family: "IBM Plex Sans";
  src: url("./assets/fonts/IBMPlexSans-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Sans";
  src: url("./assets/fonts/IBMPlexSans-Medium.ttf") format("truetype");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Sans";
  src: url("./assets/fonts/IBMPlexSans-SemiBold.ttf") format("truetype");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Sans";
  src: url("./assets/fonts/IBMPlexSans-Bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ---------- Design tokens ---------- */

:root {
  color-scheme: light dark;

  --color-purple: #5f00a8;
  --color-purple-strong: #4a0083;
  --color-purple-soft: #7f2dcf;
  --color-purple-tint: #f3ecfb;
  --color-ink: #101014;
  --color-text: #2a2a33;
  --color-muted: #6e6e7a;
  --color-line: #e7e5ed;
  --color-surface: #ffffff;
  --color-surface-soft: #f7f6fa;
  --color-topbar-bg: rgba(255, 255, 255, 0.85);
  --color-topbar-border: rgba(231, 229, 237, 0.7);
  --color-cta-bg: #101014;
  --color-cta-glow: rgba(127, 45, 207, 0.45);
  --color-hero-glow: rgba(127, 45, 207, 0.22);
  --color-screen-frame-start: #f2edfb;
  --color-screen-frame-end: #e7dff7;
  --color-phone-shell-start: #6b18bc;
  --color-phone-shell-end: #3d006c;

  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;

  --shadow-card: 0 1px 2px rgba(20, 10, 40, 0.04),
                 0 12px 32px rgba(60, 0, 120, 0.06);
  --shadow-hero: 0 30px 80px rgba(60, 0, 120, 0.25);
  --shadow-primary: 0 10px 24px rgba(95, 0, 168, 0.28);

  --max: 1120px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-purple: #af76ff;
    --color-purple-strong: #c596ff;
    --color-purple-soft: #8a4dff;
    --color-purple-tint: rgba(175, 118, 255, 0.14);
    --color-ink: #f4f2fa;
    --color-text: #c8c5d3;
    --color-muted: #8a8694;
    --color-line: #2a2635;
    --color-surface: #17141e;
    --color-surface-soft: #0f0d16;
    --color-topbar-bg: rgba(15, 13, 22, 0.78);
    --color-topbar-border: rgba(42, 38, 53, 0.7);
    --color-cta-bg: #08060e;
    --color-cta-glow: rgba(175, 118, 255, 0.4);
    --color-hero-glow: rgba(138, 77, 255, 0.22);
    --color-screen-frame-start: #2a1f48;
    --color-screen-frame-end: #181028;
    --color-phone-shell-start: #7a29cc;
    --color-phone-shell-end: #42087a;

    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.5),
                   0 12px 32px rgba(0, 0, 0, 0.45);
    --shadow-hero: 0 30px 80px rgba(138, 77, 255, 0.32);
    --shadow-primary: 0 10px 24px rgba(138, 77, 255, 0.32);
  }
}

/* ---------- Base ---------- */

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  font-weight: 400;
  color: var(--color-text);
  background: var(--color-surface);
  line-height: 1.55;
  font-size: 17px;
}

h1, h2, h3, h4 {
  color: var(--color-ink);
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0;
}

h1 {
  font-size: clamp(2.1rem, 4.4vw + 1rem, 3.6rem);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -0.025em;
}

h2 {
  font-size: clamp(1.6rem, 2vw + 1rem, 2.3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.125rem;
  line-height: 1.35;
}

p {
  margin: 0;
}

a {
  color: var(--color-purple);
  text-decoration: none;
}

a:hover {
  color: var(--color-purple-strong);
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
  background: var(--color-purple-tint);
  color: var(--color-purple-strong);
  padding: 1px 6px;
  border-radius: 6px;
}

/* ---------- Layout ---------- */

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 760px;
}

section {
  padding: 96px 0;
}

@media (max-width: 720px) {
  section {
    padding: 64px 0;
  }
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--color-purple);
  margin-bottom: 16px;
}

.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}

.section-head p {
  color: var(--color-muted);
  font-size: 1.075rem;
  margin-top: 14px;
}

/* ---------- Top bar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--color-topbar-bg);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--color-topbar-border);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--color-ink);
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.brand img {
  width: 28px;
  height: 28px;
  display: block;
}

.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}

.nav-links a {
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--color-purple);
}

@media (max-width: 640px) {
  .nav-links {
    gap: 18px;
  }
  .nav-links a.nav-secondary {
    display: none;
  }
}

/* ---------- Buttons ---------- */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: -0.005em;
  transition: transform 0.12s ease, background-color 0.12s ease,
    box-shadow 0.12s ease, color 0.12s ease;
  border: 1px solid transparent;
  cursor: pointer;
  line-height: 1;
}

.button-primary {
  background: var(--color-purple);
  color: #fff;
  box-shadow: var(--shadow-primary);
}

.button-primary:hover {
  background: var(--color-purple-strong);
  color: #fff;
  transform: translateY(-1px);
}

@media (prefers-color-scheme: dark) {
  .button-primary {
    color: #1a0735;
  }
  .button-primary:hover {
    color: #1a0735;
  }
}

.button-secondary {
  background: var(--color-surface);
  color: var(--color-ink);
  border-color: var(--color-line);
}

.button-secondary:hover {
  border-color: var(--color-purple);
  color: var(--color-purple);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 96px 0 72px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -160px -20% auto -20%;
  height: 560px;
  background: radial-gradient(
    60% 60% at 30% 50%,
    var(--color-hero-glow) 0%,
    transparent 70%
  );
  z-index: -1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 72px;
  align-items: center;
}

.hero-copy .eyebrow {
  margin-bottom: 20px;
}

.hero-copy p.lead {
  margin-top: 22px;
  font-size: 1.15rem;
  color: var(--color-muted);
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.hero-meta {
  margin-top: 28px;
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-meta span::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--color-purple-soft);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-shell {
  position: relative;
  width: min(320px, 100%);
  aspect-ratio: 1284 / 2778;
  border-radius: 42px;
  padding: 10px;
  box-shadow: var(--shadow-hero);
}

.phone-shell img {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: 32px;
  object-fit: cover;
}

@media (max-width: 900px) {
  .hero {
    padding: 72px 0 32px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .phone-shell {
    transform: none;
    width: min(280px, 70%);
  }
}

/* ---------- Feature grid ---------- */

.features {
  background: var(--color-surface-soft);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: transform 0.15s ease, box-shadow 0.15s ease,
    border-color 0.15s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
  border-color: rgba(127, 45, 207, 0.35);
}

.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--color-purple-tint);
  color: var(--color-purple);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.feature-icon svg {
  width: 20px;
  height: 20px;
}

.feature-card h3 {
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--color-muted);
  font-size: 0.98rem;
}

@media (max-width: 900px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Screens ---------- */

.screens-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  align-items: start;
}

.screen-card {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.screen-frame {
  border-radius: 28px;
  padding: 8px;
  background: linear-gradient(
    165deg,
    var(--color-screen-frame-start) 0%,
    var(--color-screen-frame-end) 100%
  );
  box-shadow: var(--shadow-card);
}

.screen-frame img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 22px;
}

.screen-card h3 {
  margin-top: 4px;
}

.screen-card p {
  color: var(--color-muted);
  font-size: 0.95rem;
}

@media (max-width: 900px) {
  .screens-grid {
    grid-template-columns: 1fr;
    max-width: 380px;
    margin: 0 auto;
  }
}

/* ---------- Workflow / steps ---------- */

.workflow {
  background: var(--color-surface-soft);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: step;
}

.step {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 28px;
  position: relative;
}

.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--color-purple);
  display: block;
  margin-bottom: 14px;
}

.step h3 {
  margin-bottom: 8px;
}

.step p {
  color: var(--color-muted);
  font-size: 0.95rem;
}

@media (max-width: 900px) {
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .steps {
    grid-template-columns: 1fr;
  }
}

/* ---------- Integrations ---------- */

.integrations-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.integration-card {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 28px;
  background: var(--color-surface);
}

.integration-card h3 {
  margin-bottom: 6px;
}

.integration-card .integration-role {
  color: var(--color-purple);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 16px;
  display: block;
}

.integration-card p {
  color: var(--color-muted);
  font-size: 0.95rem;
}

@media (max-width: 900px) {
  .integrations-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Platforms strip ---------- */

.platforms {
  padding: 56px 0;
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-surface-soft) 100%);
  border-top: 1px solid var(--color-line);
}

.platforms-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.platforms h2 {
  font-size: 1.35rem;
}

.platforms-list {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.platform-pill {
  padding: 8px 14px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  background: var(--color-surface);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text);
}

/* ---------- CTA ---------- */

.cta {
  text-align: center;
  background: var(--color-cta-bg);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
      50% 70% at 50% 0%,
      var(--color-cta-glow) 0%,
      transparent 75%
    );
  pointer-events: none;
}

.cta h2 {
  color: #fff;
  max-width: 640px;
  margin: 0 auto;
}

.cta p {
  color: rgba(255, 255, 255, 0.72);
  max-width: 520px;
  margin: 16px auto 0;
}

.cta .hero-actions {
  justify-content: center;
  margin-top: 32px;
}

.cta .button-secondary {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.25);
}

.cta .button-secondary:hover {
  border-color: #fff;
  color: #fff;
}

/* ---------- Footer ---------- */

.footer {
  padding: 48px 0;
  border-top: 1px solid var(--color-line);
  background: var(--color-surface);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--color-muted);
}

.footer-links a:hover {
  color: var(--color-purple);
}

/* ---------- Inner pages (support / privacy) ---------- */

.page-hero {
  padding: 72px 0 32px;
  border-bottom: 1px solid var(--color-line);
}

.page-hero p {
  color: var(--color-muted);
  max-width: 580px;
  margin-top: 14px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.92rem;
  font-weight: 500;
  margin-bottom: 24px;
  color: var(--color-muted);
}

.back-link:hover {
  color: var(--color-purple);
}

.back-link::before {
  content: "←";
  font-size: 1.05em;
  line-height: 1;
}

.content-stack {
  display: grid;
  gap: 24px;
  padding: 56px 0 96px;
}

.content-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 32px;
}

.content-card h2 {
  font-size: 1.3rem;
  margin-bottom: 14px;
}

.content-card h3 {
  font-size: 1.02rem;
  margin-top: 22px;
  margin-bottom: 6px;
  color: var(--color-ink);
}

.content-card p + p {
  margin-top: 12px;
}

.content-card ul {
  margin: 0;
  padding-left: 1.25em;
  color: var(--color-text);
}

.content-card li {
  margin-bottom: 8px;
}

.content-card li::marker {
  color: var(--color-purple);
}

.content-card p,
.content-card li {
  color: var(--color-text);
  font-size: 0.98rem;
}

.faq details {
  border-top: 1px solid var(--color-line);
  padding: 18px 0;
}

.faq details:first-of-type {
  border-top: none;
  padding-top: 0;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--color-ink);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 1.02rem;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  color: var(--color-purple);
  font-weight: 500;
  font-size: 1.3rem;
  line-height: 1;
  transition: transform 0.15s ease;
}

.faq details[open] summary::after {
  content: "−";
}

.faq details > p,
.faq details > ul {
  margin-top: 12px;
  color: var(--color-muted);
}