/* ============================================================
   PDFTransAI — styles.css  (landing page)
   Brand: Red #DE1620 + Navy #08234C
   ============================================================ */
:root {
  --red: #de1620;
  --red-dark: #b81019;
  --red-soft: #fdeaec;
  --navy: #08234c;
  --navy-2: #0f356f;
  --navy-soft: #eaeff7;
  --bg: #f6f8fb;
  --ink: #12203a;
  --muted: #5b6b82;
  --card: #fff;
  --line: #e6ebf3;
  --shadow-sm: 0 4px 12px rgba(8, 35, 76, .06);
  --shadow-md: 0 12px 32px rgba(8, 35, 76, .10);
  --shadow-lg: 0 24px 48px rgba(8, 35, 76, .16);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0
}

html {
  scroll-behavior: smooth
}

body {
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px
}

/* ---------- Nav ---------- */
header.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(230, 235, 243, .9)
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 21px;
  letter-spacing: -.3px
}

.brand img {
  height: 44px;
  width: 44px;
  object-fit: contain
}

.brand .pdf {
  color: var(--red)
}

.brand .trans {
  color: var(--navy)
}

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

.nav-links a {
  color: var(--muted);
  font-weight: 600;
  font-size: 14.5px;
  transition: color .2s
}

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  border: 0;
  transition: all .22s ease;
  white-space: nowrap
}

.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0
}

.btn-primary {
  background: linear-gradient(135deg, var(--red), #f0323d);
  color: #fff;
  box-shadow: 0 4px 14px rgba(222, 22, 32, .35)
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--red-dark), var(--red));
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(222, 22, 32, .42)
}

.btn-ghost {
  background: var(--navy-soft);
  color: var(--navy)
}

.btn-ghost:hover {
  background: #dde5f2;
  transform: translateY(-1px)
}

.btn-lg {
  padding: 16px 34px;
  font-size: 17px;
  border-radius: 12px
}

.nav-links .btn {
  padding: 10px 20px;
  font-size: 14px
}

/* Keep the navigation CTA understated; reserve the red gradient for primary actions in the page body. */
.nav-links .btn-primary {
  background: var(--navy-soft);
  color: var(--navy);
  box-shadow: none;
}

.nav-links .btn-primary:hover {
  background: #dde5f2;
  color: var(--navy);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(8, 35, 76, .10);
}

/* ---------- Hero ---------- */
.hero {
  padding: 88px 0 72px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 85% -10%, rgba(222, 22, 32, .08) 0%, transparent 55%),
    radial-gradient(ellipse 70% 50% at 5% 0%, rgba(8, 35, 76, .08) 0%, transparent 50%),
    linear-gradient(180deg, #fff 0%, var(--bg) 100%)
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 48px;
  align-items: center
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--red-soft);
  color: var(--red-dark);
  font-weight: 700;
  font-size: 13px;
  padding: 7px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
  letter-spacing: .2px
}

.hero h1 {
  font-size: 48px;
  line-height: 1.12;
  letter-spacing: -1.1px;
  margin-bottom: 18px;
  font-weight: 800;
  color: var(--navy)
}

.hero h1 .grad {
  background: linear-gradient(105deg, var(--red) 0%, var(--navy) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent
}

.hero p.lead {
  font-size: 18.5px;
  color: var(--muted);
  margin-bottom: 30px;
  max-width: 520px;
  line-height: 1.7
}

.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap
}

.hero-note {
  margin-top: 20px;
  font-size: 13.5px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px
}

.hero-note span {
  display: inline-flex;
  align-items: center;
  gap: 5px
}

.hero-art {
  display: flex;
  justify-content: center;
  position: relative
}

.hero-art::before {
  content: "";
  position: absolute;
  width: 440px;
  height: 440px;
  background: radial-gradient(circle, rgba(222, 22, 32, .12) 0%, rgba(222, 22, 32, .045) 32%, transparent 70%);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 0
}

.hero-art::after {
  content: "";
  position: absolute;
  width: 430px;
  height: 430px;
  border: 1px solid rgba(8, 35, 76, .07);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 0;
  box-shadow: 0 0 0 34px rgba(8, 35, 76, .025), 0 0 0 68px rgba(8, 35, 76, .018)
}

.hero-art img {
  width: 100%;
  max-width: 420px;
  position: relative;
  z-index: 1;
  display: block;
  border-radius: 30px;
  box-shadow: 0 26px 60px rgba(8, 35, 76, .16), 0 6px 18px rgba(8, 35, 76, .08);
  transition: transform .4s ease, box-shadow .4s ease
}

.hero-art img:hover {
  transform: scale(1.02) translateY(-4px);
  box-shadow: 0 32px 72px rgba(8, 35, 76, .20), 0 8px 22px rgba(8, 35, 76, .10)
}

/* ---------- Section base ---------- */
section {
  padding: 80px 0
}

.section-head {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 52px
}

.section-head h2 {
  font-size: 34px;
  letter-spacing: -.6px;
  margin-bottom: 12px;
  font-weight: 800;
  color: var(--navy)
}

.section-head p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.65
}

/* ---------- Features ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 32px 28px;
  transition: all .28s ease;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red), var(--navy));
  opacity: 0;
  transition: opacity .28s ease
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: #dbe2ee
}

.card:hover::before {
  opacity: 1
}

.card .ico {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  background: linear-gradient(145deg, var(--red-soft), var(--navy-soft));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .8);
  transition: transform .28s ease
}

.card:hover .ico {
  transform: scale(1.08)
}

.card .ico svg {
  width: 28px;
  height: 28px
}

.card h3 {
  font-size: 18.5px;
  margin-bottom: 10px;
  font-weight: 700;
  letter-spacing: -.2px;
  color: var(--navy)
}

.card p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65
}

/* ---------- How it works ---------- */
#how {
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line)
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px
}

.step {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 36px 26px 28px;
  transition: all .25s ease
}

.step:hover {
  background: #fff;
  box-shadow: var(--shadow-sm);
  border-color: #dce3ef
}

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--red), #f0323d);
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  box-shadow: 0 6px 16px rgba(222, 22, 32, .35)
}

.step h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--navy)
}

.step p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6
}

/* ---------- Languages ---------- */
#languages {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 8% 18%, rgba(222, 22, 32, .09), transparent 25%),
    radial-gradient(circle at 92% 82%, rgba(8, 35, 76, .10), transparent 28%),
    linear-gradient(160deg, #f8faff 0%, #fff 48%, #fff7f7 100%)
}

#languages::before {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  right: -180px;
  top: -220px;
  border: 1px solid rgba(222, 22, 32, .10);
  border-radius: 50%;
  box-shadow: 0 0 0 55px rgba(222, 22, 32, .025), 0 0 0 110px rgba(222, 22, 32, .018);
  pointer-events: none
}

#languages .container {
  position: relative;
  z-index: 1
}

#languages .section-head {
  margin-bottom: 38px
}

#languages .section-head h2 {
  margin-bottom: 10px
}

#languages .section-head p {
  max-width: 540px;
  margin: 0 auto
}

.lang-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  max-width: 960px;
  margin: 0 auto
}

.lang-item {
  position: relative;
  min-height: 122px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 18px 12px;
  overflow: hidden;
  cursor: default;
  background: rgba(255, 255, 255, .88);
  border: 1px solid rgba(8, 35, 76, .09);
  border-radius: 18px;
  box-shadow: 0 8px 24px rgba(8, 35, 76, .07), inset 0 1px 0 rgba(255, 255, 255, .95);
  transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease, background .28s ease
}

.lang-item::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  background: linear-gradient(135deg, rgba(222, 22, 32, .07), transparent 42%, rgba(8, 35, 76, .06));
  transition: opacity .28s ease;
  pointer-events: none
}

.lang-item::after {
  content: "";
  position: absolute;
  width: 72px;
  height: 72px;
  right: -34px;
  bottom: -42px;
  border-radius: 50%;
  background: rgba(222, 22, 32, .07);
  transition: transform .35s ease
}

.lang-item:hover {
  transform: translateY(-7px);
  border-color: rgba(222, 22, 32, .22);
  box-shadow: 0 16px 34px rgba(8, 35, 76, .13), 0 5px 18px rgba(222, 22, 32, .08)
}

.lang-item:hover::before {
  opacity: 1
}

.lang-item:hover::after {
  transform: scale(1.8)
}

.lang-flag {
  position: relative;
  z-index: 1;
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  font-size: 31px;
  line-height: 1;
  border-radius: 16px;
  background: linear-gradient(145deg, #fff, #f2f5fa);
  border: 1px solid rgba(8, 35, 76, .08);
  box-shadow: 0 6px 14px rgba(8, 35, 76, .08), inset 0 1px 0 #fff;
  transition: transform .28s ease, box-shadow .28s ease
}

.lang-item:hover .lang-flag {
  transform: scale(1.08) rotate(-2deg);
  box-shadow: 0 9px 18px rgba(8, 35, 76, .12)
}

.lang-name {
  position: relative;
  z-index: 1;
  margin: 0;
  font-weight: 750;
  font-size: 14px;
  letter-spacing: .1px;
  color: var(--navy)
}

.lang-item.special {
  background: linear-gradient(135deg, #fff1f2, #eef3fb);
  border-color: rgba(222, 22, 32, .12)
}

.lang-item.special .lang-flag {
  background: linear-gradient(145deg, var(--red), var(--navy));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 18px rgba(222, 22, 32, .20)
}

.lang-item.special .lang-name {
  color: var(--red-dark)
}

/* ---------- Get started (CTA) ---------- */
#get-started {
  padding: 70px 0
}

.cta-box {
  background: linear-gradient(125deg, var(--navy) 0%, #14346e 55%, var(--red) 130%);
  color: #fff;
  text-align: center;
  border-radius: 24px;
  padding: 56px 32px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden
}

.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, .12) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255, 255, 255, .08) 0%, transparent 45%);
  pointer-events: none
}

.cta-box h2 {
  font-size: 32px;
  margin-bottom: 12px;
  font-weight: 800;
  letter-spacing: -.5px;
  position: relative
}

.cta-box p {
  opacity: .92;
  font-size: 17.5px;
  margin-bottom: 28px;
  position: relative
}

.cta-box .btn-primary {
  background: #fff;
  color: var(--red);
  position: relative;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .15)
}

.cta-box .btn-primary:hover {
  background: #fff5f5;
  transform: translateY(-2px)
}

.cta-box .btn-primary svg {
  stroke: var(--red)
}

/* ---------- Footer ---------- */
footer {
  background: var(--navy);
  color: #c7d2e4;
  padding: 48px 0 28px
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 28px
}

footer h4 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 12px;
  font-weight: 700
}

footer p {
  font-size: 14.5px;
  line-height: 1.6;
  color: #aeb9cf
}

footer ul {
  list-style: none
}

footer li {
  margin-bottom: 8px
}

footer a {
  font-size: 14.5px;
  color: #c7d2e4;
  transition: color .2s
}

footer a:hover {
  color: #fff
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .12);
  padding-top: 20px;
  text-align: center;
  font-size: 13px;
  color: #93a1bd
}

/* ---------- Responsive ---------- */
@media(max-width:900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 36px
  }

  .hero p.lead {
    margin-left: auto;
    margin-right: auto
  }

  .hero-cta {
    justify-content: center
  }

  .hero-note {
    justify-content: center
  }

  .hero-art {
    order: -1
  }

  .features,
  .steps {
    grid-template-columns: 1fr
  }

  .lang-grid {
    grid-template-columns: repeat(3, 1fr)
  }

  .nav-links a:not(.btn) {
    display: none
  }

  .hero h1 {
    font-size: 36px;
    letter-spacing: -.8px
  }

  .section-head h2 {
    font-size: 28px
  }

  .cta-box h2 {
    font-size: 26px
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    text-align: center
  }
}

@media(max-width:480px) {
  .hero {
    padding: 56px 0 48px
  }

  .hero h1 {
    font-size: 30px
  }

  section {
    padding: 56px 0
  }

  .lang-grid {
    grid-template-columns: repeat(2, 1fr)
  }

  .cta-box {
    padding: 40px 20px;
    border-radius: 20px
  }
}

/* ---------- PDF visual showcase ---------- */
.pdf-showcase {
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden
}

.showcase-kicker {
  display: inline-flex;
  align-items: center;
  padding: 7px 13px;
  border-radius: 999px;
  background: var(--red-soft);
  color: var(--red-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .8px;
  margin-bottom: 14px
}

.pdf-compare {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 88px minmax(0, 1fr);
  gap: 20px;
  align-items: center;
  max-width: 1020px;
  margin: 0 auto
}

.pdf-panel {
  background: linear-gradient(145deg, #f8faff, #fff);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 18px;
  box-shadow: 0 18px 44px rgba(8, 35, 76, .10);
  transition: transform .28s ease, box-shadow .28s ease
}

.pdf-panel:hover {
  transform: translateY(-5px);
  box-shadow: 0 24px 52px rgba(8, 35, 76, .15)
}

.pdf-panel-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 15px;
  color: var(--navy)
}

.pdf-panel-top strong {
  display: block;
  font-size: 15px;
  line-height: 1.25
}

.pdf-panel-top small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-top: 2px
}

.pdf-badge {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, #ff3340, var(--red));
  color: #fff;
  font-weight: 900;
  font-size: 12px;
  box-shadow: 0 8px 18px rgba(222, 22, 32, .25)
}

.pdf-badge.translated {
  background: linear-gradient(145deg, var(--navy), #17477f);
  box-shadow: 0 8px 18px rgba(8, 35, 76, .20)
}

.pdf-sheet {
  position: relative;
  min-height: 290px;
  background: #fff;
  border: 1px solid #e4e9f1;
  border-radius: 10px;
  padding: 24px 24px 20px;
  overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .9)
}

.pdf-sheet:before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 7px;
  background: linear-gradient(90deg, var(--red), #f13a45)
}

.translated-panel .pdf-sheet:before {
  background: linear-gradient(90deg, var(--navy), var(--red))
}

.sheet-title {
  font-size: 19px;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -.35px;
  margin-top: 3px;
  max-width: 92%
}

.sheet-subtitle {
  font-size: 10.5px;
  color: var(--muted);
  margin-top: 4px
}

.sheet-chart {
  height: 92px;
  display: flex;
  align-items: flex-end;
  gap: 9px;
  padding: 12px 15px 0;
  margin: 18px 0 14px;
  border-left: 1px solid #dfe5ef;
  border-bottom: 1px solid #dfe5ef
}

.sheet-chart span {
  display: block;
  width: 12%;
  min-width: 15px;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(180deg, #f13a45, var(--red));
  box-shadow: 0 4px 10px rgba(222, 22, 32, .14)
}

.translated-panel .sheet-chart span {
  background: linear-gradient(180deg, #2f5f98, var(--navy))
}

.sheet-lines {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px
}

.sheet-lines i,
.sheet-columns i {
  height: 5px;
  border-radius: 5px;
  background: #dfe5ee;
  display: block
}

.sheet-lines i.short,
.sheet-columns i.short {
  width: 65%
}

.sheet-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px
}

.sheet-columns>div {
  display: flex;
  flex-direction: column;
  gap: 6px
}

.translated-stamp {
  position: absolute;
  right: -31px;
  top: 24px;
  transform: rotate(38deg);
  padding: 5px 36px;
  background: var(--red);
  color: #fff;
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 1.2px;
  box-shadow: 0 5px 14px rgba(222, 22, 32, .2)
}

.compare-arrow {
  text-align: center;
  color: var(--red)
}

.compare-arrow span {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  margin: 0 auto 8px;
  border-radius: 50%;
  background: var(--red-soft);
  font-size: 31px;
  font-weight: 500;
  box-shadow: 0 8px 20px rgba(222, 22, 32, .10)
}

.compare-arrow small {
  font-size: 11px;
  font-weight: 800;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .7px
}

.showcase-points {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin-top: 30px;
  color: var(--muted);
  font-size: 13.5px;
  font-weight: 600
}

.showcase-points span::first-letter {
  color: var(--red)
}

@media(max-width:900px) {
  .pdf-compare {
    grid-template-columns: 1fr;
    max-width: 620px
  }

  .compare-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 2px 0
  }

  .compare-arrow span {
    margin: 0;
    transform: rotate(90deg)
  }

  .compare-arrow small {
    display: none
  }
}

@media(max-width:480px) {
  .pdf-panel {
    padding: 13px;
    border-radius: 18px
  }

  .pdf-sheet {
    min-height: 240px;
    padding: 20px 18px 16px
  }

  .sheet-title {
    font-size: 16px
  }

  .sheet-chart {
    height: 76px;
    gap: 6px
  }

  .showcase-points {
    align-items: center;
    flex-direction: column;
    gap: 8px
  }
}