/* Teknavals static website styles
   Brand logic: navy = trust, teal = technical clarity, amber = action/commerce. */
:root {
  --navy: #0B1F3A;
  --navy-2: #12365A;
  --teal: #00A6A6;
  --teal-dark: #087A7A;
  --amber: #F4B942;
  --sand: #F7F3E8;
  --white: #FFFFFF;
  --ink: #15202B;
  --muted: #657786;
  --line: rgba(11, 31, 58, 0.14);
  --shadow: 0 22px 60px rgba(11, 31, 58, 0.18);
  --radius: 22px;
  --radius-sm: 14px;
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
}

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

img, svg {
  display: block;
  max-width: 100%;
}

.container {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.navbar {
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  letter-spacing: 0.04em;
  color: var(--navy);
}

.brand img {
  width: 48px;
  height: 48px;
}

.brand span {
  font-size: 1.05rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--navy);
  font-weight: 700;
  font-size: 0.94rem;
}

.nav-links a {
  opacity: 0.86;
}

.nav-links a:hover,
.nav-links a:focus {
  opacity: 1;
  color: var(--teal-dark);
}

.lang-switch {
  display: flex;
  gap: 8px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px;
  background: var(--white);
}

.lang-switch a {
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--navy);
}

.lang-switch a.active {
  background: var(--navy);
  color: var(--white);
}

.mobile-toggle {
  display: none;
  border: 0;
  background: var(--navy);
  color: var(--white);
  border-radius: 12px;
  padding: 10px 12px;
  font-weight: 800;
}

.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at top right, rgba(0,166,166,0.27), transparent 30%),
    linear-gradient(135deg, var(--navy) 0%, #09213A 50%, #0E4961 100%);
  color: var(--white);
}

.hero:after {
  content: "";
  position: absolute;
  inset: auto -10% -38% -10%;
  height: 52%;
  background: rgba(255,255,255,0.07);
  transform: rotate(-4deg);
}

.hero-grid {
  position: relative;
  z-index: 1;
  padding: 92px 0 82px;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 54px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 12px;
  border: 1px solid rgba(255,255,255,0.26);
  border-radius: 999px;
  background: rgba(255,255,255,0.10);
  color: rgba(255,255,255,0.92);
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.eyebrow:before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--amber);
  box-shadow: 0 0 0 5px rgba(244,185,66,0.16);
}

.hero h1 {
  margin: 18px 0 18px;
  max-width: 820px;
  font-size: clamp(2.55rem, 6vw, 5.25rem);
  line-height: 0.95;
  letter-spacing: -0.065em;
}

.hero p {
  margin: 0 0 28px;
  max-width: 680px;
  color: rgba(255,255,255,0.82);
  font-size: 1.15rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 900;
  border: 1px solid transparent;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--amber);
  color: #1A1A1A;
  box-shadow: 0 16px 36px rgba(244,185,66,0.27);
}

.button-secondary {
  color: var(--white);
  border-color: rgba(255,255,255,0.34);
  background: rgba(255,255,255,0.08);
}

.hero-card {
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.20);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.book-mockup {
  min-height: 410px;
  border-radius: 20px;
  position: relative;
  overflow: hidden;
  padding: 26px;
  background:
    linear-gradient(160deg, rgba(255,255,255,0.13), rgba(255,255,255,0.03)),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.08) 0, rgba(255,255,255,0.08) 1px, transparent 1px, transparent 22px);
}

.book-cover {
  width: min(310px, 92%);
  margin: 6px auto 0;
  min-height: 365px;
  border-radius: 18px 26px 26px 18px;
  background:
    linear-gradient(160deg, #FFFFFF 0%, #E6F4F4 52%, #D4E1D5 100%);
  color: var(--navy);
  box-shadow: 18px 24px 50px rgba(0,0,0,0.28);
  padding: 30px 24px;
  transform: rotate(-3deg);
  position: relative;
}

.book-cover:before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 18px;
  background: linear-gradient(180deg, var(--teal), var(--navy));
  border-radius: 18px 0 0 18px;
}

.book-cover strong {
  display: block;
  margin-left: 14px;
  font-size: 4.2rem;
  line-height: .8;
  letter-spacing: -0.08em;
}

.book-cover span {
  display: block;
  margin: 28px 0 0 14px;
  font-weight: 900;
  text-transform: uppercase;
  line-height: 1;
  font-size: 1.9rem;
  letter-spacing: -0.04em;
}

.book-cover small {
  display: block;
  margin: 18px 0 0 14px;
  color: var(--teal-dark);
  font-weight: 800;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 28px;
}

.stat {
  padding: 18px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.09);
  border: 1px solid rgba(255,255,255,0.15);
}

.stat b {
  display: block;
  font-size: 1.45rem;
  color: var(--amber);
}

.stat span {
  color: rgba(255,255,255,0.78);
  font-size: 0.9rem;
}

.section {
  padding: 82px 0;
}

.section-alt {
  background: var(--sand);
}

.section-title {
  max-width: 760px;
  margin-bottom: 38px;
}

.section-title h2 {
  margin: 0 0 12px;
  color: var(--navy);
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1;
  letter-spacing: -0.055em;
}

.section-title p {
  margin: 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: 0 14px 34px rgba(11,31,58,0.08);
}

.card.dark {
  background: var(--navy);
  color: var(--white);
  border: 0;
}

.card h3 {
  color: var(--navy);
  margin: 0 0 10px;
  line-height: 1.15;
  font-size: 1.35rem;
  letter-spacing: -0.025em;
}

.card.dark h3 {
  color: var(--white);
}

.card p {
  margin: 0;
  color: var(--muted);
}

.card.dark p {
  color: rgba(255,255,255,0.76);
}

.icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: rgba(0,166,166,0.12);
  color: var(--teal-dark);
  font-size: 1.5rem;
  margin-bottom: 18px;
}

.product-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.product-tag {
  color: var(--teal-dark);
  font-weight: 900;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

.product-card ul {
  margin: 18px 0 24px;
  padding-left: 20px;
  color: var(--muted);
}

.product-card .button {
  margin-top: auto;
  align-self: flex-start;
  background: var(--navy);
  color: var(--white);
}

.feature-band {
  border-radius: 34px;
  padding: 44px;
  background:
    radial-gradient(circle at right, rgba(244,185,66,0.22), transparent 28%),
    linear-gradient(135deg, var(--navy), var(--navy-2));
  color: var(--white);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center;
  overflow: hidden;
}

.feature-band h2 {
  margin: 0 0 12px;
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1;
  letter-spacing: -0.055em;
}

.feature-band p {
  color: rgba(255,255,255,0.78);
  margin: 0;
}

.check-list {
  display: grid;
  gap: 12px;
}

.check-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px;
  border-radius: 14px;
  background: rgba(255,255,255,0.08);
}

.check-item:before {
  content: "✓";
  display: grid;
  place-items: center;
  flex: 0 0 24px;
  height: 24px;
  border-radius: 999px;
  background: var(--teal);
  color: var(--white);
  font-weight: 900;
}

.process {
  counter-reset: step;
}

.process .card {
  position: relative;
}

.process .card:before {
  counter-increment: step;
  content: "0" counter(step);
  color: rgba(11,31,58,0.13);
  position: absolute;
  right: 22px;
  top: 16px;
  font-weight: 950;
  font-size: 3.8rem;
  line-height: 1;
}

.contact-panel {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 28px;
  align-items: start;
}

.contact-box {
  background: var(--navy);
  color: var(--white);
  border-radius: var(--radius);
  padding: 34px;
}

.contact-box h2 {
  margin: 0 0 14px;
  font-size: 2.4rem;
  line-height: 1;
  letter-spacing: -0.05em;
}

.contact-box p {
  color: rgba(255,255,255,0.78);
}

.contact-box a {
  color: var(--amber);
  font-weight: 900;
}

.form {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 16px 40px rgba(11,31,58,0.08);
}

.form label {
  display: block;
  margin: 0 0 6px;
  color: var(--navy);
  font-weight: 850;
  font-size: 0.9rem;
}

.form input,
.form textarea,
.form select {
  width: 100%;
  border: 1px solid rgba(11,31,58,0.22);
  border-radius: 14px;
  padding: 13px 14px;
  font: inherit;
  margin-bottom: 14px;
  background: #fff;
}

.form textarea {
  min-height: 120px;
  resize: vertical;
}

.form .button {
  width: 100%;
  border: 0;
  cursor: pointer;
}

.note {
  margin-top: 12px;
  font-size: 0.84rem;
  color: var(--muted);
}

.legal-page {
  padding: 64px 0 90px;
}

.legal-page article {
  max-width: 880px;
}

.legal-page h1 {
  color: var(--navy);
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 1;
  letter-spacing: -0.06em;
  margin: 0 0 18px;
}

.legal-page h2 {
  color: var(--navy);
  margin-top: 36px;
}

.legal-page p,
.legal-page li {
  color: #334155;
}

.site-footer {
  background: #07182C;
  color: var(--white);
  padding: 48px 0 26px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr .8fr;
  gap: 30px;
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(255,255,255,0.14);
}

.footer-grid h3,
.footer-grid h4 {
  margin: 0 0 12px;
}

.footer-grid p,
.footer-grid a,
.footer-bottom {
  color: rgba(255,255,255,0.72);
}

.footer-grid a:hover {
  color: var(--amber);
}

.footer-links {
  display: grid;
  gap: 8px;
}

.footer-bottom {
  padding-top: 22px;
  font-size: 0.88rem;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  background: rgba(244,185,66,0.16);
  color: #FFD97E;
  border: 1px solid rgba(244,185,66,0.25);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 850;
}

@media (max-width: 960px) {
  .hero-grid,
  .feature-band,
  .contact-panel,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-grid {
    padding-top: 60px;
  }
}

@media (max-width: 760px) {
  .navbar {
    height: auto;
    padding: 14px 0;
    align-items: flex-start;
  }

  .mobile-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .nav-links {
    display: none;
    position: absolute;
    inset: 74px 20px auto 20px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 18px;
    box-shadow: var(--shadow);
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links.open {
    display: flex;
  }

  .brand span {
    display: none;
  }

  .lang-switch {
    margin-left: auto;
  }

  .hero h1 {
    font-size: 3.1rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 52px 0 56px;
  }

  .grid-3,
  .grid-4,
  .stats {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 58px 0;
  }

  .feature-band {
    padding: 28px;
    border-radius: 24px;
  }

  .footer-bottom {
    display: grid;
  }
}