/* manthaApps — landing page
   Palette and type follow Images/manthaApps-brand-guide.md */

:root {
  --ink:            #171320;
  --ink-soft:       #211A30;
  --ink-lift:       #241B34;
  --accent:         #A987F0;
  --grad-top:       #C9B4F7;
  --grad-bottom:    #9A78EE;
  --text:           #F5F2FC;
  --text-dim:       rgba(245, 242, 252, 0.68);
  --text-faint:     rgba(245, 242, 252, 0.44);
  --hairline:       rgba(169, 135, 240, 0.18);
  --hairline-soft:  rgba(245, 242, 252, 0.08);

  --wrap:  1120px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
}

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

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: "Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-weight: 300;
  font-size: 17px;
  line-height: 1.65;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--grad-top); }

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

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--ink);
  padding: 10px 18px;
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 100;
}
.skip-link:focus { left: 0; }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(23, 19, 32, 0.82);
  backdrop-filter: saturate(150%) blur(14px);
  -webkit-backdrop-filter: saturate(150%) blur(14px);
  border-bottom: 1px solid var(--hairline-soft);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
  padding-block: 12px;
}

.brand img {
  width: clamp(168px, 22vw, 224px);
  height: auto;
}

.site-nav {
  display: flex;
  gap: clamp(18px, 3vw, 34px);
  font-size: 15px;
  letter-spacing: 0.02em;
}

.site-nav a {
  color: var(--text-dim);
  padding-block: 4px;
  border-bottom: 1px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}
.site-nav a:hover {
  color: var(--text);
  border-bottom-color: var(--accent);
}

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

.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(72px, 13vw, 148px) clamp(56px, 10vw, 108px);
}

.hero::before {
  content: "";
  position: absolute;
  inset: -30% -10% auto -10%;
  height: 620px;
  background:
    radial-gradient(58% 62% at 22% 8%, rgba(169, 135, 240, 0.20), transparent 70%),
    radial-gradient(46% 50% at 84% 22%, rgba(201, 180, 247, 0.11), transparent 72%);
  pointer-events: none;
  z-index: 0;
}

.hero .wrap { position: relative; z-index: 1; }

.eyebrow {
  margin: 0 0 20px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero h1 {
  margin: 0 0 28px;
  font-size: clamp(2.35rem, 6.2vw, 4.15rem);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: -0.018em;
  max-width: 18ch;
}

.lede {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(1.03rem, 1.6vw, 1.2rem);
  color: var(--text-dim);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 40px;
}

.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  transition: transform 160ms ease, background 160ms ease,
              border-color 160ms ease, color 160ms ease;
}

.btn-primary {
  background: linear-gradient(180deg, var(--grad-top), var(--grad-bottom));
  color: var(--ink);
}
.btn-primary:hover {
  color: var(--ink);
  transform: translateY(-1px);
}

.btn-ghost {
  border-color: var(--hairline);
  color: var(--text);
  background: rgba(245, 242, 252, 0.03);
}
.btn-ghost:hover {
  color: var(--text);
  border-color: var(--accent);
  transform: translateY(-1px);
}

/* ---------- Section shared ---------- */

.section-title {
  margin: 0 0 12px;
  font-size: clamp(1.05rem, 1.5vw, 1.15rem);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

/* ---------- Apps ---------- */

.apps { padding-block: clamp(48px, 8vw, 88px); }

.app-grid {
  display: grid;
  gap: 24px;
  margin-top: 32px;
  grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
}

.app-card {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 3.4vw, 38px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--hairline-soft);
  background: linear-gradient(165deg, var(--ink-lift), var(--ink-soft));
  transition: border-color 200ms ease, transform 200ms ease;
}

.app-card::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--card-accent, var(--accent)), transparent);
  opacity: 0.55;
}

.app-card:hover {
  border-color: var(--hairline);
  transform: translateY(-2px);
}

.app-card--diffivo { --card-accent: #6DBE45; }
.app-card--pourivo { --card-accent: #F2A93B; }

.app-card-head {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.app-icon {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  flex: none;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.35);
}

.app-card h3 {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.app-meta {
  margin: 2px 0 0;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--text-faint);
}

.badge {
  margin-left: auto;
  align-self: flex-start;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  border: 1px solid var(--hairline);
  color: var(--grad-top);
  background: rgba(169, 135, 240, 0.10);
}

.badge--date {
  border-color: rgba(201, 180, 247, 0.40);
  background: rgba(201, 180, 247, 0.16);
}

.app-line {
  margin: 0 0 10px;
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--text);
}

.app-copy {
  margin: 0 0 22px;
  color: var(--text-dim);
}

.app-points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  border-top: 1px solid var(--hairline-soft);
  padding-top: 22px;
}

.app-points li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  color: var(--text-dim);
}

.app-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(180deg, var(--grad-top), var(--grad-bottom));
}

.app-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 24px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--grad-top);
}

.app-link::after {
  content: "→";
  transition: transform 160ms ease;
}

.app-link:hover::after { transform: translateX(3px); }

/* ---------- Studio ---------- */

.studio {
  padding-block: clamp(48px, 8vw, 88px);
  border-top: 1px solid var(--hairline-soft);
}

.studio-inner {
  display: grid;
  gap: clamp(32px, 5vw, 64px);
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: start;
}

.studio p {
  max-width: 52ch;
  color: var(--text-dim);
}

.studio em { color: var(--text); font-style: italic; }

.tenets {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 4px;
}

.tenets li {
  padding: 20px 22px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: background 180ms ease, border-color 180ms ease;
}
.tenets li:hover {
  background: rgba(245, 242, 252, 0.026);
  border-color: var(--hairline-soft);
}

.tenets h3 {
  margin: 0 0 4px;
  font-size: 1.02rem;
  font-weight: 500;
  letter-spacing: 0.005em;
}

.tenets p { margin: 0; font-size: 15px; }

/* ---------- Contact ---------- */

.contact {
  padding-block: clamp(56px, 9vw, 104px);
  border-top: 1px solid var(--hairline-soft);
  text-align: center;
}

.contact .lede { margin-inline: auto; margin-bottom: 32px; }

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

.site-footer {
  border-top: 1px solid var(--hairline-soft);
  padding-block: 32px;
}

.footer-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--text-faint);
}

.footer-inner p { margin: 0; }
.footer-contact { margin-left: auto !important; }
.footer-contact a { color: var(--text-dim); }
.footer-contact a:hover { color: var(--accent); }

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .studio-inner { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .site-nav { font-size: 14px; gap: 16px; }
  .header-inner { min-height: 66px; }
  .badge { margin-left: 0; }
  .app-grid { grid-template-columns: 1fr; }
  .footer-contact { margin-left: 0 !important; }
}

@media (max-width: 400px) {
  .site-nav a:first-child { display: none; }
}