@font-face {
  font-family: "Quicksand";
  src: url("assets/fonts/quicksand-latin.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "Quicksand";
  src: url("assets/fonts/quicksand-latin-ext.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: "Quicksand";
  src: url("assets/fonts/quicksand-vietnamese.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;
}

:root {
  --bg: #f4f7f0;
  --surface: #ffffff;
  --surface-alt: #eef3e8;
  --text: #1a2a12;
  --muted: #5a6e48;
  --primary: #7bbb2a;
  --primary-dark: #5a9018;
  --primary-light: #d6edba;
  --accent: #8060b8;
  --accent-light: #c4a8f0;
  --shadow: 0 8px 24px rgba(60, 90, 30, 0.12);
  --radius: 18px;
  --topbar-bg: #1a2a12;
}

html { scroll-behavior: smooth; }
* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Quicksand", "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
}

h1, h2, h3 { font-weight: 700; }

a { text-decoration: none; }

/* ── Buttons ── */
.btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), #9ed44a);
  color: #ffffff;
  padding: 12px 24px;
  border-radius: 999px;
  box-shadow: 0 6px 18px rgba(90, 144, 24, 0.35);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(90, 144, 24, 0.45);
}
.btn-secondary {
  background: var(--surface-alt);
  color: var(--text);
  border: 1px solid var(--primary-light);
  box-shadow: var(--shadow);
}
.btn-outline {
  background: transparent;
  color: var(--primary-dark);
  border: 2px solid var(--primary);
  box-shadow: none;
}
.btn-outline:hover { background: var(--primary-light); }
.btn-small { padding: 8px 16px; font-size: 1rem; }

/* ── Layout ── */
.inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

/* ── Topbar ── */
.topbar {
  background: var(--topbar-bg);
  position: sticky;
  top: 0;
  z-index: 100;
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  padding-bottom: 20px;
}
.brand {
  color: #ffffff;
  font-weight: 700;
  font-size: 1.5rem;
}
.brand span { color: var(--primary); }
.topbar nav a {
  color: #ffffff;
  margin-left: 24px;
  font-size: 1rem;
  font-weight: 600;
}
.topbar nav a:hover { color: var(--primary); }

/* ── Hero ── */
.hero {
  min-height: 680px;
  max-width: 1400px;
  margin: 0 auto;
  background:
    linear-gradient(to right, rgba(26, 42, 18, 0.82) 0%, rgba(26, 42, 18, 0.35) 55%, transparent 85%),
    url("assets/blanik3.jpeg") 15% center/cover no-repeat;
  display: flex;
  flex-direction: column;
  padding: 80px 0 0;
}
.hero-inner {
  flex: 1;
  display: flex;
  align-items: center;
}
.hero-headline {
  width: 40%;
  max-width: 460px;
  min-width: 260px;
}
.label {
  color: var(--accent-light);
  background: rgba(128, 96, 184, 0.20);
  border-radius: 6px;
  padding: 3px 10px;
  font-size: 1.2rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  display: inline-block;
  margin: 14px 0 20px;
}
.hero-sample-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  color: var(--accent-light);
  background: rgba(128, 96, 184, 0.18);
  border: 1px solid rgba(196, 168, 240, 0.40);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease, color 0.2s ease;
}
.hero-sample-link:hover {
  background: rgba(128, 96, 184, 0.32);
  border-color: var(--accent-light);
  transform: translateY(-2px);
  color: #fff;
}
.hero-sample-link .arrow { transition: transform 0.2s ease; }
.hero-sample-link:hover .arrow { transform: translateX(4px); }
.hero h1 { font-size: clamp(1.8rem, 5vw, 4.5rem); margin: 0; letter-spacing: 0.08em; color: #ffffff; white-space: nowrap; }
.hero h1 span { color: var(--primary); }
.hero p { margin: 0 0 28px; color: rgba(255, 255, 255, 0.82); font-size: 1.15rem; line-height: 1.6; }

/* ── Sections ── */
.section { padding: 80px 0; }

/* About: extra top padding to clear the stats-strip overlap */
#about.section {
  padding-top: 130px;
}

/* ── Grids ── */
.about-grid,
.specs-grid,
.parts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.about-img img,
.specs-image img,
.parts-img img {
  width: 100%;
  border-radius: var(--radius);
  object-fit: cover;
  box-shadow: var(--shadow);
  display: block;
}

/* ── Section heading accent ── */
.about h2, .specs h2, .parts h2 {
  border-left: 3px solid var(--accent);
  padding-left: 14px;
  margin-top: 0;
}

/* ── About text card ── */
.about-text {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 40px 36px;
  box-shadow: var(--shadow);
  margin-left: -24px;
  position: relative;
  z-index: 1;
}
/* ── Specs section ── */
.specs { background: var(--surface-alt); border-radius: var(--radius); padding: 64px 40px; }
.spec-list { list-style: none; padding: 0; margin: 24px 0; }
.spec-list li { padding: 10px 0; border-bottom: 1px solid var(--accent-light); color: var(--muted); }
.spec-list li strong { color: var(--text); }

/* ── Parts section ── */
.parts p { color: var(--muted); line-height: 1.5; }

/* ── Free sample callout ── */
.free-sample-callout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 48px;
  background: rgba(128, 96, 184, 0.08);
  border: 1px solid var(--accent-light);
  border-radius: var(--radius);
  padding: 28px 32px;
}
.free-sample-text p { margin: 6px 0 0; color: var(--muted); font-size: 1rem; }
.free-sample-text strong { color: var(--text); font-size: 1.05rem; }

/* ── Footer ── */
.footer {
  background: var(--topbar-bg);
  color: rgba(255, 255, 255, 0.70);
  padding: 48px 20px;
  font-size: 1rem;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-logo { font-weight: 800; font-size: 1.2rem; color: #ffffff; }
.footer-logo span { color: var(--primary); }
.footer-links a { color: rgba(255, 255, 255, 0.70); margin-left: 20px; font-size: 1rem; }
.footer-links a:hover { color: var(--primary); }
.footer-copy {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.50);
  width: 100%;
  text-align: center;
  margin-top: 8px;
}

/* ── Animations ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
.hero h1           { animation: fadeUp 0.6s ease 0.10s both; }
.label             { animation: fadeUp 0.5s ease 0.25s both; }
.hero p            { animation: fadeUp 0.6s ease 0.40s both; }
.hero .btn         { animation: fadeUp 0.6s ease 0.55s both; }
.hero-sample-link  { animation: fadeUp 0.6s ease 0.65s both; }

/* Scroll fade-in */
.fade-in {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* Stagger: included cards */
.included-card:nth-child(2) { transition-delay: 0.10s; }
.included-card:nth-child(3) { transition-delay: 0.20s; }
.included-card:nth-child(4) { transition-delay: 0.30s; }

/* Stagger: stats */
.stat:nth-child(2) { transition-delay: 0.08s; }
.stat:nth-child(3) { transition-delay: 0.16s; }
.stat:nth-child(4) { transition-delay: 0.24s; }

/* Image hover zoom */
.about-img, .specs-image, .parts-img { overflow: hidden; }
.about-img img,
.specs-image img,
.parts-img img { transition: transform 0.45s ease; }
.about-img img:hover,
.specs-image img:hover,
.parts-img img:hover { transform: scale(1.05); }

/* Card hover lift */
.included-card {
  transition: opacity 0.55s ease, transform 0.55s ease, box-shadow 0.2s ease;
}
.included-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 18px 40px rgba(60, 90, 30, 0.18);
}

/* Stat hover */
.stat { transition: background 0.2s ease; }
.stat:hover { background: var(--surface-alt); }

/* ── Stats strip ── */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--primary-light);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  position: relative;
  z-index: 10;
  margin-bottom: -50px;
}
.stat {
  background: var(--surface);
  padding: 24px 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-dark);
  line-height: 1;
}
.stat-value small { font-size: 1rem; font-weight: 600; }
.stat-label {
  font-size: 1rem;
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── What's Included ── */
.included h2 {
  border-left: none;
  padding-left: 0;
  text-align: center;
  font-size: 2rem;
  margin-bottom: 8px;
}
.included-intro {
  text-align: center;
  color: var(--muted);
  margin: 0 auto 40px;
  max-width: 520px;
}
.included-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.included-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  border-top: 3px solid var(--primary);
}
.included-icon {
  color: var(--primary);
  font-size: 1.4rem;
  margin-bottom: 12px;
}
.included-card h3 { margin: 0 0 10px; font-size: 1rem; color: var(--text); }
.included-card p { margin: 0; font-size: 1rem; color: var(--muted); line-height: 1.6; }

/* ── Feature callout ── */
.feature-callout {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: linear-gradient(135deg, rgba(128, 96, 184, 0.10), rgba(128, 96, 184, 0.05));
  border: 1px solid var(--accent-light);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-top: 48px;
}
.feature-callout-icon {
  color: var(--accent);
  font-size: 1.6rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}
.feature-callout-body h3 { margin: 0 0 8px; color: var(--text); font-size: 1.1rem; }
.feature-callout-body p  { margin: 0; color: var(--muted); line-height: 1.65; font-size: 1rem; }
.feature-callout-body strong { color: var(--text); }

/* ── Hamburger toggle ── */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Responsive ── */
@media (max-width: 900px) {
  .included-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .about-grid,
  .specs-grid,
  .parts-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .about-text { margin-left: 0; }
  .specs { padding: 40px 24px; }
}
@media (max-width: 640px) {
  .nav-toggle { display: flex; }
  .topbar { position: relative; }
  .topbar nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--topbar-bg);
    flex-direction: column;
    padding: 8px 20px 16px;
    border-radius: 0 0 14px 14px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
  }
  .topbar nav.open { display: flex; }
  .topbar nav a { margin-left: 0; padding: 16px 0; border-bottom: 1px solid rgba(255, 255, 255, 0.07); }
  .topbar nav a:last-child { border-bottom: none; padding-bottom: 4px; }
  .topbar nav a.btn { padding: 10px 20px; align-self: flex-start; margin-top: 4px; }

  .hero {
    min-height: 520px;
    padding: 60px 0 0;
    background:
      linear-gradient(to bottom, rgba(26, 42, 18, 0.85) 0%, rgba(26, 42, 18, 0.65) 60%, rgba(26, 42, 18, 0.4) 100%),
      url("assets/blanik3.jpeg") 60% center/cover no-repeat;
  }
  .hero-headline { width: 100%; max-width: none; }
  .hero h1 { font-size: clamp(1.8rem, 8vw, 3rem); white-space: normal; }
  .hero p { font-size: 1rem; }

  .section { padding-top: 56px; padding-bottom: 56px; }
  .specs { padding: 32px 20px; }
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
  .free-sample-callout { flex-direction: column; }
  .feature-callout { flex-direction: column; gap: 12px; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 12px; }
  .footer-links { display: flex; flex-direction: column; gap: 0; }
  .footer-links a { margin-left: 0; margin-right: 0; padding: 8px 0; }
}
@media (max-width: 520px) {
  .included-grid { grid-template-columns: 1fr; }
}