/* ==========================================================================
   Pletec LLC — Modern Dark-Tech Theme
   ========================================================================== */

:root {
  --bg: #0a0e14;
  --bg-soft: #0f1620;
  --bg-card: #131c28;
  --bg-card-hover: #18222f;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #e6edf3;
  --text-soft: #9aa7b4;
  --text-dim: #6b7785;
  --accent: #38bdf8;
  --accent-2: #818cf8;
  --accent-3: #34d399;
  --grad: linear-gradient(120deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
  --grad-soft: linear-gradient(120deg, rgba(56,189,248,.15), rgba(129,140,248,.15));
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.7);
  --maxw: 1120px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
    "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
}

/* Light theme overrides */
[data-theme="light"] {
  --bg: #f6f8fc;
  --bg-soft: #eef2f8;
  --bg-card: #ffffff;
  --bg-card-hover: #f3f6fb;
  --border: rgba(15, 30, 55, 0.10);
  --border-strong: rgba(15, 30, 55, 0.20);
  --text: #0f1825;
  --text-soft: #4a5667;
  --text-dim: #7c8a9a;
  --shadow: 0 20px 50px -24px rgba(20, 40, 80, 0.25);
}

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

html { transition: background-color .3s ease; }
body { transition: background-color .3s ease, color .3s ease; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Ambient background glow */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(60% 50% at 15% 0%, rgba(56, 189, 248, 0.12), transparent 70%),
    radial-gradient(50% 50% at 85% 10%, rgba(129, 140, 248, 0.12), transparent 70%),
    radial-gradient(60% 60% at 50% 100%, rgba(192, 132, 252, 0.08), transparent 70%);
  pointer-events: none;
}

a { color: var(--accent); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--accent-2); }

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

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

.section { padding: 110px 0; position: relative; }
.section--tight { padding: 80px 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--accent);
  display: inline-block;
}

.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}

.section-lead {
  color: var(--text-soft);
  font-size: 17px;
  max-width: 680px;
}

.center { text-align: center; }
.center .section-lead { margin-left: auto; margin-right: auto; }

.gradient-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ==========================================================================
   Navbar
   ========================================================================== */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(10, 14, 20, 0.72);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--text);
}
.brand:hover { color: var(--text); }
.brand-mark {
  width: 30px; height: 30px;
  border-radius: 9px;
  background: var(--grad);
  display: grid;
  place-items: center;
  font-size: 15px;
  font-weight: 900;
  color: #0a0e14;
}
.nav-right { display: flex; align-items: center; gap: 6px; }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  color: var(--text-soft);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  transition: color .2s ease, background .2s ease;
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,.05); }
.nav-cta {
  background: var(--grad);
  color: #0a0e14 !important;
  font-weight: 700 !important;
}
.nav-cta:hover { opacity: .9; }
.nav-toggle {
  -webkit-appearance: none;
  appearance: none;
  display: none;
  background: none; border: none;
  color: var(--text);
  font-size: 24px;
  line-height: 1;
  padding: 4px 8px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

/* Theme toggle */
.theme-toggle {
  -webkit-appearance: none;
  appearance: none;
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  padding: 0;
  margin-left: 6px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  -webkit-tap-highlight-color: transparent;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.theme-toggle:hover { background: rgba(255, 255, 255, 0.09); color: var(--accent); }
[data-theme="light"] .theme-toggle { background: rgba(15, 30, 55, 0.04); }
[data-theme="light"] .theme-toggle:hover { background: rgba(15, 30, 55, 0.08); }
.theme-toggle svg { display: block; width: 18px; height: 18px; }
.theme-toggle .icon-moon { display: none; }
.theme-toggle .icon-sun { display: block; }
[data-theme="light"] .theme-toggle .icon-sun { display: none; }
[data-theme="light"] .theme-toggle .icon-moon { display: block; }

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}
.hero-grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 40%, transparent 100%);
}
.hero-inner { max-width: 860px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,.03);
  font-size: 13px;
  color: var(--text-soft);
  margin-bottom: 28px;
}
.hero-badge .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent-3);
  box-shadow: 0 0 0 4px rgba(52, 211, 153, .2);
}
.hero h1 {
  font-size: clamp(40px, 7vw, 76px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}
.hero-sub {
  font-size: clamp(17px, 2.2vw, 21px);
  color: var(--text-soft);
  max-width: 640px;
  margin-bottom: 38px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .15s ease, opacity .2s ease, background .2s ease, border-color .2s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--grad); color: #0a0e14; }
.btn-primary:hover { color: #0a0e14; opacity: .92; }
.btn-ghost {
  background: rgba(255,255,255,.04);
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-ghost:hover { background: rgba(255,255,255,.08); color: var(--text); }

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  margin-top: 64px;
  padding-top: 36px;
  border-top: 1px solid var(--border);
}
.hero-stats .stat-num {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.hero-stats .stat-label {
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: .04em;
}

/* ==========================================================================
   Marquee / tech strip
   ========================================================================== */

.techstrip {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 28px 0;
  background: var(--bg-soft);
}
.techstrip-label {
  text-align: center;
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 18px;
}
.techstrip-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px 28px;
  list-style: none;
}
.techstrip-list li {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-soft);
  opacity: .85;
}

/* ==========================================================================
   Services
   ========================================================================== */

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
}
.card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 30px;
  text-align: left;
  transition: transform .25s ease, border-color .25s ease, background .25s ease;
  overflow: hidden;
}
.card::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}
.card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  background: var(--bg-card-hover);
}
.card:hover::after { transform: scaleX(1); }
.card-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: var(--grad-soft);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  margin-bottom: 22px;
}
.card-icon img { width: 30px; height: 30px; filter: brightness(0) invert(1); opacity: .92; }
.card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.card p { color: var(--text-soft); font-size: 15px; margin-bottom: 20px; }
.card-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-soft);
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 5px 11px;
}

/* ==========================================================================
   Process
   ========================================================================== */

.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-top: 56px;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 30px 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  text-align: left;
}
.step-num {
  font-size: 14px;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  margin-bottom: 14px;
  letter-spacing: .05em;
}
.step h4 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.step p { color: var(--text-soft); font-size: 14.5px; }

/* ==========================================================================
   Why / Feature list
   ========================================================================== */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.feature-list { list-style: none; display: grid; gap: 22px; }
.feature-list li { display: flex; gap: 16px; text-align: left; }
.feature-check {
  flex: none;
  width: 38px; height: 38px;
  border-radius: 11px;
  background: var(--grad-soft);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  color: var(--accent);
  font-weight: 800;
}
.feature-list h4 { font-size: 16.5px; font-weight: 700; margin-bottom: 4px; }
.feature-list p { color: var(--text-soft); font-size: 14.5px; margin: 0; }

.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
}
.panel-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.panel-row:last-child { border-bottom: 0; }
.panel-row .k { color: var(--text-soft); font-size: 14.5px; }
.panel-row .v { font-weight: 700; }
.bar {
  height: 8px;
  border-radius: 99px;
  background: rgba(255,255,255,.06);
  overflow: hidden;
  margin-top: 8px;
}
.bar span { display: block; height: 100%; background: var(--grad); border-radius: 99px; }

/* ==========================================================================
   FAQ
   ========================================================================== */

.faq { max-width: 800px; margin: 48px auto 0; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  margin-bottom: 14px;
  overflow: hidden;
}
.faq-q {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  color: var(--text);
  font-size: 16.5px;
  font-weight: 600;
  padding: 22px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-family: inherit;
}
.faq-q .chev { transition: transform .25s ease; color: var(--accent); flex: none; }
.faq-item.open .faq-q .chev { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}
.faq-a p {
  color: var(--text-soft);
  font-size: 15px;
  padding: 0 24px 22px;
  margin: 0;
}

/* ==========================================================================
   Company table
   ========================================================================== */

.info-table {
  width: 100%;
  max-width: 760px;
  margin: 48px auto 0;
  border-collapse: collapse;
}
.info-table tr { border-bottom: 1px solid var(--border); }
.info-table th {
  text-align: left;
  vertical-align: top;
  padding: 22px 24px 22px 0;
  width: 200px;
  color: var(--text-soft);
  font-weight: 600;
  font-size: 14.5px;
  letter-spacing: .02em;
}
.info-table td {
  text-align: left;
  vertical-align: top;
  padding: 22px 0;
  color: var(--text);
}

/* ==========================================================================
   CTA
   ========================================================================== */

.cta-wrap {
  position: relative;
  border: 1px solid var(--border-strong);
  border-radius: 24px;
  padding: 64px 40px;
  text-align: center;
  background:
    radial-gradient(70% 120% at 50% 0%, rgba(129,140,248,.18), transparent 70%),
    var(--bg-card);
  overflow: hidden;
}
.cta-wrap h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.cta-wrap p { color: var(--text-soft); max-width: 560px; margin: 0 auto 32px; }

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  border-top: 1px solid var(--border);
  padding: 56px 0 32px;
  background: var(--bg-soft);
}
.footer-top {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 32px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--border);
}
.footer-brand { max-width: 320px; text-align: left; }
.footer-brand p { color: var(--text-dim); font-size: 14px; margin-top: 14px; }
.footer-cols { display: flex; gap: 64px; flex-wrap: wrap; }
.footer-col h5 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--text-dim);
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  color: var(--text-soft);
  font-size: 14.5px;
  margin-bottom: 11px;
}
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text-dim);
  font-size: 13.5px;
}

/* ==========================================================================
   Reveal animation
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.in { opacity: 1; transform: none; }

/* ==========================================================================
   Privacy page
   ========================================================================== */

.prose { max-width: 800px; margin: 0 auto; text-align: left; }
.prose h2 {
  font-size: 26px;
  font-weight: 700;
  margin: 48px 0 18px;
  letter-spacing: -0.01em;
}
.prose h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 32px 0 10px;
  color: var(--text);
}
.prose p { color: var(--text-soft); margin-bottom: 16px; }
.prose ul { color: var(--text-soft); padding-left: 22px; margin-bottom: 20px; }
.prose li { margin-bottom: 8px; }
.prose dl { margin-top: 12px; }
.prose dt { font-weight: 700; color: var(--text); }
.prose dd { color: var(--text-soft); margin: 6px 0 0; }
.page-head { padding: 150px 0 40px; text-align: center; }

/* ==========================================================================
   Light-mode element fixes (values hard-coded for dark)
   ========================================================================== */

[data-theme="light"] .nav.scrolled {
  background: rgba(246, 248, 252, 0.78);
  border-bottom: 1px solid var(--border);
}
[data-theme="light"] .hero-grid {
  background-image:
    linear-gradient(rgba(15, 30, 55, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 30, 55, .05) 1px, transparent 1px);
}
[data-theme="light"] body::before {
  background:
    radial-gradient(60% 50% at 15% 0%, rgba(56, 189, 248, 0.18), transparent 70%),
    radial-gradient(50% 50% at 85% 10%, rgba(129, 140, 248, 0.16), transparent 70%),
    radial-gradient(60% 60% at 50% 100%, rgba(192, 132, 252, 0.12), transparent 70%);
}
[data-theme="light"] .card-icon img { filter: none; opacity: 1; }
[data-theme="light"] .hero-badge,
[data-theme="light"] .btn-ghost,
[data-theme="light"] .tag,
[data-theme="light"] .bar { background: rgba(15, 30, 55, 0.04); }
[data-theme="light"] .btn-ghost:hover { background: rgba(15, 30, 55, 0.08); }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 880px) {
  .cards { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .nav-links {
    position: fixed;
    top: 68px; right: 16px; left: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: rgba(15, 22, 32, 0.96);
    backdrop-filter: blur(14px);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 12px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s ease, transform .25s ease;
  }
  .nav-links.open { opacity: 1; transform: none; pointer-events: auto; }
  [data-theme="light"] .nav-links {
    background: rgba(255, 255, 255, 0.97);
    border-color: var(--border);
  }
  .nav-links a { padding: 12px 14px; }
  .nav-toggle { display: block; }
  .section { padding: 80px 0; }
}

@media (max-width: 540px) {
  .process { grid-template-columns: 1fr; }
  .info-table th { width: 120px; padding-right: 14px; }
  .hero-stats { gap: 28px; }
  .footer-top { flex-direction: column; }
}