/* Convertissima landing — Inter, dark-first, editorial spacing (Linear/Vercel-adjacent) */

:root {
  color-scheme: dark;
  --pl-bg: #08080a;
  --pl-bg-elevated: #0e0e12;
  --pl-surface: rgba(18, 18, 24, 0.72);
  --pl-surface-solid: #12121a;
  --pl-border: rgba(255, 255, 255, 0.06);
  --pl-border-strong: rgba(255, 255, 255, 0.1);
  --pl-text: #f4f4f5;
  --pl-text-soft: #d4d4d8;
  --pl-muted: #a1a1aa;
  --pl-accent: #22d3ee;
  --pl-accent-dim: rgba(34, 211, 238, 0.14);
  --pl-accent-hover: #67e8f9;
  --pl-accent-on: #050505;
  --pl-radius: 10px;
  --pl-radius-lg: 12px;
  --pl-shadow: 0 18px 48px rgba(0, 0, 0, 0.45);
  --pl-shadow-soft: 0 8px 24px rgba(0, 0, 0, 0.28);
  --pl-space-section: clamp(1.5rem, 4vw, 3rem);
  --pl-space-inset: clamp(1.5rem, 5vw, 3rem);
  --pl-font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --pl-ease: cubic-bezier(0.25, 0.1, 0.25, 1);
}

:root[data-theme="light"] {
  color-scheme: light;
  --pl-bg: #f4f4f5;
  --pl-bg-elevated: #e4e4e7;
  --pl-surface: rgba(255, 255, 255, 0.78);
  --pl-surface-solid: #ffffff;
  --pl-border: rgba(9, 9, 11, 0.08);
  --pl-border-strong: rgba(9, 9, 11, 0.12);
  --pl-text: #09090b;
  --pl-text-soft: #27272a;
  --pl-muted: #71717a;
  --pl-accent: #0891b2;
  --pl-accent-dim: rgba(8, 145, 178, 0.12);
  --pl-accent-hover: #06b6d4;
  --pl-accent-on: #fafafa;
  --pl-shadow: 0 18px 48px rgba(9, 9, 11, 0.08);
  --pl-shadow-soft: 0 8px 24px rgba(9, 9, 11, 0.06);
}

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

html {
  scroll-behavior: smooth;
}

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

body.pl {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--pl-font);
  font-size: 1.0625rem;
  line-height: 1.65;
  letter-spacing: -0.01em;
  color: var(--pl-text-soft);
  background-color: var(--pl-bg);
  background-image:
    radial-gradient(ellipse 120% 80% at 50% -30%, rgba(34, 211, 238, 0.09), transparent 55%),
    linear-gradient(180deg, var(--pl-bg) 0%, #050508 100%);
}

:root[data-theme="light"] body.pl {
  background-image:
    radial-gradient(ellipse 100% 60% at 50% -20%, rgba(8, 145, 178, 0.08), transparent 50%),
    linear-gradient(180deg, var(--pl-bg) 0%, #ebebed 100%);
}

a {
  color: var(--pl-accent);
  text-decoration: none;
  transition: color 0.15s var(--pl-ease);
}

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

:focus-visible {
  outline: 2px solid var(--pl-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.pl-skip {
  position: absolute;
  left: -9999px;
  top: 0.75rem;
  padding: 0.5rem 1rem;
  background: var(--pl-surface-solid);
  border: 1px solid var(--pl-border-strong);
  border-radius: var(--pl-radius);
  color: var(--pl-text);
  z-index: 200;
}

.pl-skip:focus {
  left: 0.75rem;
}

/* Header */
.pl-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--pl-border);
  background: color-mix(in srgb, var(--pl-bg) 75%, transparent);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
}

@supports not (backdrop-filter: blur(1px)) {
  .pl-header {
    background: var(--pl-bg-elevated);
  }
}

.pl-header__inner {
  max-width: 72rem;
  margin: 0 auto;
  padding: 1rem var(--pl-space-inset);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.pl-logo {
  font-weight: 800;
  font-size: 1.125rem;
  letter-spacing: -0.03em;
  color: var(--pl-text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.pl-logo:hover {
  color: var(--pl-text);
  text-decoration: none;
}

.pl-logo__mark {
  width: 0.5rem;
  height: 1.25rem;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--pl-accent), var(--pl-accent-hover));
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.35);
}

.pl-nav-toggle {
  display: none;
  border: 1px solid var(--pl-border-strong);
  background: var(--pl-surface-solid);
  border-radius: var(--pl-radius);
  padding: 0.55rem 0.65rem;
  cursor: pointer;
  color: var(--pl-text);
}

.pl-nav-toggle__bar {
  display: block;
  width: 1.25rem;
  height: 2px;
  background: currentColor;
  margin: 5px 0;
  border-radius: 1px;
}

.pl-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.pl-nav__list {
  display: flex;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.pl-nav__list a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--pl-muted);
}

.pl-nav__list a:hover {
  color: var(--pl-text);
  text-decoration: none;
}

.pl-nav__list a[aria-current="page"] {
  color: var(--pl-text);
  font-weight: 600;
}

.pl-nav__actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.pl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.35rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  border-radius: var(--pl-radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.12s var(--pl-ease), box-shadow 0.15s var(--pl-ease), background 0.15s var(--pl-ease), border-color 0.15s var(--pl-ease), color 0.15s var(--pl-ease);
}

.pl-btn:active {
  transform: scale(0.98);
}

.pl-btn--primary {
  background: var(--pl-accent);
  color: var(--pl-accent-on);
  border-color: color-mix(in srgb, var(--pl-accent) 88%, #000);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.06) inset, var(--pl-shadow-soft);
}

.pl-btn--primary:hover {
  background: var(--pl-accent-hover);
  color: var(--pl-accent-on);
  text-decoration: none;
  box-shadow: 0 0 32px rgba(34, 211, 238, 0.22), var(--pl-shadow-soft);
}

.pl-btn--ghost {
  background: transparent;
  color: var(--pl-text-soft);
  border-color: var(--pl-border-strong);
}

.pl-btn--ghost:hover {
  background: var(--pl-surface);
  border-color: var(--pl-border-strong);
  color: var(--pl-text);
  text-decoration: none;
}

.pl-btn--sm {
  padding: 0.45rem 0.85rem;
  font-size: 0.8125rem;
  font-weight: 600;
}

/* Main */
.pl-main {
  flex: 1 0 auto;
  width: 100%;
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 var(--pl-space-inset);
}

/* Hero */
.pl-hero {
  padding: var(--pl-space-section) 0 clamp(2.5rem, 6vw, 4rem);
}

.pl-hero__eyebrow {
  margin: 0 0 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--pl-accent);
}

.pl-hero__title {
  margin: 0 0 1.25rem;
  max-width: 14ch;
  font-size: clamp(2.75rem, 7vw, 4.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.045em;
  color: var(--pl-text);
}

.pl-hero__lead {
  margin: 0;
  max-width: 38rem;
  font-size: 1.125rem;
  line-height: 1.65;
  font-weight: 400;
  color: var(--pl-muted);
}

.pl-hero__actions {
  margin-top: 2.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

/* Feature cards */
.pl-section {
  padding: var(--pl-space-section) 0;
  border-top: 1px solid var(--pl-border);
}

.pl-section__head {
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.pl-section__title {
  margin: 0 0 0.65rem;
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.15;
  color: var(--pl-text);
}

.pl-section__subtitle {
  margin: 0;
  max-width: 40rem;
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--pl-muted);
}

.pl-grid {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .pl-grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pl-card {
  padding: clamp(1.5rem, 3vw, 2rem);
  border-radius: var(--pl-radius-lg);
  border: 1px solid var(--pl-border);
  background: var(--pl-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--pl-shadow-soft);
  transition: border-color 0.2s var(--pl-ease), box-shadow 0.2s var(--pl-ease), transform 0.2s var(--pl-ease);
}

.pl-card:hover {
  border-color: color-mix(in srgb, var(--pl-accent) 28%, var(--pl-border));
  box-shadow: var(--pl-shadow);
  transform: translateY(-2px);
}

@supports not (backdrop-filter: blur(1px)) {
  .pl-card {
    background: var(--pl-surface-solid);
  }
}

.pl-card__icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--pl-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
  background: var(--pl-accent-dim);
  color: var(--pl-accent);
  border: 1px solid color-mix(in srgb, var(--pl-accent) 22%, transparent);
}

.pl-card__title {
  margin: 0 0 0.65rem;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--pl-text);
}

.pl-card__text {
  margin: 0;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--pl-muted);
}

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

@media (min-width: 900px) {
  .pl-steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pl-step {
  padding: clamp(1.5rem, 3vw, 2rem);
  border-radius: var(--pl-radius-lg);
  border: 1px solid var(--pl-border);
  background: var(--pl-surface-solid);
  box-shadow: var(--pl-shadow-soft);
}

.pl-step__num {
  display: block;
  margin-bottom: 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--pl-accent);
}

.pl-step__title {
  margin: 0 0 0.5rem;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--pl-text);
  letter-spacing: -0.02em;
}

.pl-step__text {
  margin: 0;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--pl-muted);
}

/* CTA band */
.pl-cta {
  margin: var(--pl-space-section) 0;
  padding: clamp(2rem, 5vw, 3rem);
  border-radius: var(--pl-radius-lg);
  border: 1px solid var(--pl-border);
  background: linear-gradient(135deg, var(--pl-accent-dim), transparent 55%), var(--pl-surface-solid);
  box-shadow: var(--pl-shadow-soft);
}

.pl-cta__title {
  margin: 0 0 0.75rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--pl-text);
}

.pl-cta__text {
  margin: 0 0 1.5rem;
  max-width: 36rem;
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--pl-muted);
}

/* Footer */
.pl-footer {
  margin-top: auto;
  border-top: 1px solid var(--pl-border);
  padding: clamp(1.5rem, 3vw, 2rem) var(--pl-space-inset);
  background: var(--pl-bg-elevated);
}

.pl-footer__inner {
  max-width: 72rem;
  margin: 0 auto;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--pl-muted);
}

.pl-footer__inner > p {
  margin: 0 0 0.5rem;
}

.pl-footer__inner > p:last-child {
  margin-bottom: 0;
}

.pl-footer__keywords {
  font-size: 0.7rem;
  line-height: 1.5;
  letter-spacing: 0.01em;
  opacity: 0.55;
}

.pl-footer a {
  color: var(--pl-text-soft);
  text-decoration: underline;
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}

.pl-footer a:hover {
  color: var(--pl-text);
}

.pl-footer code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.8125em;
  padding: 0.15em 0.4em;
  border-radius: 6px;
  background: var(--pl-surface-solid);
  border: 1px solid var(--pl-border);
  color: var(--pl-text-soft);
}

/* ── Hamburger ✕ animation (bar transitions always present) ─────────────── */
.pl-nav-toggle {
  transition: background 0.15s var(--pl-ease), border-color 0.15s var(--pl-ease);
}

.pl-nav-toggle__bar {
  transition: transform 0.22s var(--pl-ease), opacity 0.15s var(--pl-ease), width 0.15s;
}

.pl-nav-toggle[aria-expanded="true"] {
  background: color-mix(in srgb, var(--pl-accent) 10%, var(--pl-surface-solid));
  border-color: color-mix(in srgb, var(--pl-accent) 30%, var(--pl-border-strong));
}

.pl-nav-toggle[aria-expanded="true"] .pl-nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.pl-nav-toggle[aria-expanded="true"] .pl-nav-toggle__bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.pl-nav-toggle[aria-expanded="true"] .pl-nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (prefers-reduced-motion: reduce) {
  .pl-nav-toggle__bar {
    transition: none;
  }
}

/* ── 768 px — tablet / large phone ──────────────────────────────────────── */
@media (max-width: 768px) {
  .pl-nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-width: 44px;
    min-height: 44px;
    padding: 0.5rem 0.6rem;
  }

  .pl-nav {
    position: fixed;
    inset: 0 0 auto 0;
    top: 3.5rem;
    background: var(--pl-surface-solid);
    border-bottom: 1px solid var(--pl-border);
    padding: 1rem max(1.25rem, env(safe-area-inset-left)) max(1.5rem, env(safe-area-inset-bottom));
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
    display: none;
    box-shadow: var(--pl-shadow);
    overflow-y: auto;
    max-height: calc(100dvh - 3.5rem);
  }

  .pl-nav.is-open {
    display: flex;
    animation: nav-slide-in 0.18s var(--pl-ease) both;
  }

  body.nav-open {
    overflow: hidden;
  }

  @keyframes nav-slide-in {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: translateY(0); }
  }

  @media (prefers-reduced-motion: reduce) {
    .pl-nav.is-open { animation: none; }
  }

  .pl-nav__list {
    flex-direction: column;
    gap: 0;
  }

  .pl-nav__list li {
    border-bottom: 1px solid var(--pl-border);
  }

  .pl-nav__list li:last-child {
    border-bottom: none;
  }

  .pl-nav__list a {
    display: flex;
    align-items: center;
    padding: 0.85rem 0;
    font-size: 1.0625rem;
    font-weight: 500;
    color: var(--pl-text-soft);
    min-height: 48px;
  }

  .pl-nav__list a:hover {
    color: var(--pl-text);
  }

  .pl-nav__actions {
    flex-direction: column;
    align-items: stretch;
    gap: 0.65rem;
    padding-top: 0.5rem;
  }

  .pl-nav__actions .pl-btn {
    min-height: 48px;
    justify-content: center;
    width: 100%;
  }

  /* Hero: stack buttons vertically */
  .pl-hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .pl-hero__actions .pl-btn {
    min-height: 52px;
    justify-content: center;
    width: 100%;
  }

  /* CTA: full-width button */
  .pl-cta .pl-btn {
    display: flex;
    width: 100%;
    min-height: 52px;
    justify-content: center;
  }
}

/* ── 480 px — small phones ───────────────────────────────────────────────── */
@media (max-width: 480px) {
  body.pl {
    font-size: 1rem;
  }

  .pl-header__inner {
    padding-left: max(1rem, env(safe-area-inset-left));
    padding-right: max(1rem, env(safe-area-inset-right));
  }

  .pl-main {
    padding-left: max(1rem, env(safe-area-inset-left));
    padding-right: max(1rem, env(safe-area-inset-right));
  }

  .pl-hero {
    padding-top: 2rem;
  }

  .pl-hero__eyebrow {
    font-size: 0.7rem;
    letter-spacing: 0.16em;
    margin-bottom: 0.75rem;
  }

  .pl-hero__title {
    font-size: clamp(2rem, 11vw, 2.75rem);
    letter-spacing: -0.03em;
    max-width: none;
  }

  .pl-hero__lead {
    font-size: 0.9375rem;
    line-height: 1.6;
  }

  .pl-hero__actions {
    margin-top: 1.75rem;
    gap: 0.65rem;
  }

  .pl-section__title {
    font-size: clamp(1.4rem, 7vw, 1.75rem);
  }

  .pl-section__subtitle,
  .pl-card__text,
  .pl-step__text,
  .pl-cta__text {
    font-size: 0.9375rem;
  }

  .pl-card__icon {
    width: 2rem;
    height: 2rem;
    font-size: 0.9rem;
    margin-bottom: 0.85rem;
  }

  .pl-card__title {
    font-size: 1rem;
    margin-bottom: 0.45rem;
  }

  .pl-step__num {
    margin-bottom: 0.65rem;
  }

  .pl-step__title {
    font-size: 1rem;
  }

  .pl-cta {
    padding: 1.5rem 1.1rem;
  }

  .pl-cta__title {
    font-size: 1.35rem;
  }

  .pl-cta__text {
    margin-bottom: 1.25rem;
  }

  .pl-footer {
    padding-top: 1.25rem;
    padding-bottom: max(1.25rem, env(safe-area-inset-bottom, 0px));
    padding-left: max(1rem, env(safe-area-inset-left));
    padding-right: max(1rem, env(safe-area-inset-right));
  }

  .pl-footer__inner {
    font-size: 0.8125rem;
  }

  .pl-footer__keywords {
    display: none;
  }
}