/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'Inter', sans-serif; background: #fff; color: #111; line-height: 1.6; }
h1, h2, h3 { font-family: 'Oswald', sans-serif; text-transform: uppercase; line-height: 1.1; }
a { text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.text-center { text-align: center; }

/* ===== SECTION BACKGROUNDS ===== */
.section-dark { background: #111; color: #fff; }
.section-light { background: #f7f7f7; color: #111; }
.section-dark .overline { color: #888; }
.section-dark h2 { color: #fff; }
.section-dark p { color: #bbb; }

/* ===== TYPOGRAPHY ===== */
.overline {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #888;
  margin-bottom: 12px;
  display: block;
}
h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 20px; }
.body-large { font-size: 1.1rem; max-width: 680px; margin: 0 auto; line-height: 1.75; }
.section-dark .body-large { color: #bbb; }
.section-light .body-large { color: #444; }

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-block;
  background: #fff;
  color: #000;
  font-family: 'Oswald', sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 16px 36px;
  border-radius: 3px;
  transition: background 0.2s, transform 0.1s;
  border: 2px solid #fff;
}
.btn-primary:hover { background: #e8e8e8; transform: translateY(-1px); }
.section-light .btn-primary {
  background: #111;
  color: #fff;
  border-color: #111;
}
.section-light .btn-primary:hover { background: #333; }
.btn-block { display: block; width: 100%; text-align: center; }
.btn-nav {
  display: inline-block;
  background: #fff;
  color: #000;
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 10px 22px;
  border-radius: 3px;
  transition: background 0.2s;
  white-space: nowrap;
}
.btn-nav:hover { background: #e0e0e0; }

/* ===== NAV ===== */
#navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #000;
  padding: 0 32px;
  transition: box-shadow 0.3s;
}
#navbar.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.5); }
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo { height: 40px; width: auto; }

/* ===== HERO ===== */
.hero {
  background: #0a0a0a;
  color: #fff;
  padding: 80px 48px;
  min-height: 92vh;
  display: flex;
  align-items: center;
}
.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 64px;
  width: 100%;
}
.hero-content { flex: 1; max-width: 560px; }
.tag {
  display: inline-block;
  background: #fff;
  color: #000;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 6px 14px;
  border-radius: 2px;
  margin-bottom: 24px;
}
.hero h1 {
  font-size: clamp(3.5rem, 7vw, 5.5rem);
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}
.hero-sub {
  font-size: 1.1rem;
  color: #bbb;
  margin-bottom: 32px;
  max-width: 460px;
  line-height: 1.7;
}
.hero-price {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.price-was-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.price-was {
  font-family: 'Oswald', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: #555;
  text-decoration: line-through;
  text-decoration-thickness: 3px;
  text-decoration-color: #888;
}
.price-savings {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #888;
}
.price-now-wrap {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}
.price-now {
  font-family: 'Oswald', sans-serif;
  font-size: 3.2rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}
.price-label {
  font-size: 0.75rem;
  color: #888;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border: 1px solid #333;
  padding: 3px 10px;
  border-radius: 20px;
}
.hero-fine {
  margin-top: 16px;
  font-size: 0.83rem;
  color: #555;
  letter-spacing: 0.02em;
}
.hero-visual { flex: 1; max-width: 520px; }
.hero-visual img { border-radius: 6px; width: 100%; }

/* ===== PROOF BAR ===== */
.proof-bar {
  background: #1a1a1a;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  padding: 14px 24px;
  border-top: 1px solid #2a2a2a;
}
.proof-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #ccc;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 8px 20px;
  white-space: nowrap;
}
.proof-icon { font-size: 1rem; }

/* ===== PROBLEM SECTION ===== */
.problem-section { padding: 96px 24px; }
.problem-section h2 { font-size: clamp(2rem, 4.5vw, 3.2rem); margin-bottom: 24px; }

/* ===== FEATURE SECTIONS ===== */
.feature-section { padding: 96px 24px; }
.feature-inner {
  display: flex;
  align-items: center;
  gap: 72px;
  max-width: 1100px;
  margin: 0 auto;
}
.feature-inner.reverse { flex-direction: row-reverse; }
.feature-text { flex: 1; }
.feature-text h2 { font-size: clamp(2rem, 3.5vw, 2.8rem); margin-bottom: 18px; }
.feature-text p { font-size: 1rem; line-height: 1.75; margin-bottom: 28px; }
.section-dark .feature-text p { color: #bbb; }
.section-light .feature-text p { color: #444; }
.feature-image { flex: 1; }
.feature-image img { border-radius: 6px; width: 100%; }

.check-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.check-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
}
.section-dark .check-list li { color: #ccc; }
.section-light .check-list li { color: #333; }
.check-list li::before {
  content: '✓';
  font-weight: 700;
  flex-shrink: 0;
}
.section-dark .check-list li::before { color: #fff; }
.section-light .check-list li::before { color: #111; }

/* ===== SPECS ===== */
.specs-section { padding: 96px 24px; }
.specs-section h2 { margin-bottom: 56px; }
.specs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  max-width: 900px;
  margin: 0 auto;
  border: 1px solid #e0e0e0;
}
.spec-item {
  padding: 40px 24px;
  text-align: center;
  border: 1px solid #e0e0e0;
}
.spec-number {
  font-family: 'Oswald', sans-serif;
  font-size: 3.2rem;
  font-weight: 700;
  color: #111;
  line-height: 1;
  margin-bottom: 8px;
}
.spec-label {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #888;
  font-weight: 500;
}

/* ===== REVIEWS ===== */
.reviews-section { padding: 96px 24px; }
.reviews-section h2 { margin-bottom: 48px; }
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1100px;
  margin: 0 auto;
}
.review-card {
  background: #1a1a1a;
  border: 1px solid #2a2a2a;
  border-radius: 6px;
  padding: 32px 28px;
  text-align: left;
}
.review-stars {
  color: #fff;
  font-size: 1rem;
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.review-text {
  color: #bbb !important;
  font-style: italic;
  line-height: 1.75;
  margin-bottom: 20px;
  font-size: 0.95rem;
}
.review-author {
  color: #666 !important;
  font-size: 0.85rem;
  font-weight: 600;
}

/* ===== EMAIL SECTION ===== */
.email-section { padding: 96px 24px; }
.email-section h2 { margin-bottom: 16px; }
.email-section .body-large { margin-bottom: 36px; }
.email-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
  flex-wrap: wrap;
}
.email-form input {
  flex: 1;
  min-width: 220px;
  padding: 14px 18px;
  font-size: 1rem;
  border: 2px solid #ddd;
  border-radius: 3px;
  outline: none;
  font-family: 'Inter', sans-serif;
  transition: border-color 0.2s;
}
.email-form input:focus { border-color: #111; }
.email-form button {
  background: #111;
  color: #fff;
  font-family: 'Oswald', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 14px 28px;
  border: none;
  border-radius: 3px;
  cursor: pointer;
  transition: background 0.2s;
  white-space: nowrap;
}
.email-form button:hover { background: #333; }
.email-form button:disabled { background: #555; cursor: default; }

/* ===== PREORDER SECTION ===== */
.preorder-section { padding: 96px 24px; }
.preorder-section .overline { color: #ff9900; }
.preorder-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  gap: 64px;
}
.preorder-left { flex: 1.2; }
.preorder-left h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 20px; }
.preorder-left > p { color: #bbb; font-size: 1rem; margin-bottom: 32px; line-height: 1.75; }
.trust-items { display: flex; flex-direction: column; gap: 10px; }
.trust-item {
  font-size: 0.95rem;
  color: #bbb;
  padding: 8px 0;
  border-bottom: 1px solid #222;
}
.preorder-box {
  flex: 0 0 340px;
  background: #1a1a1a;
  border: 2px solid #fff;
  border-radius: 8px;
  padding: 40px 32px;
  text-align: center;
}
.preorder-logo { height: 80px; width: auto; margin: 0 auto 28px; }
.preorder-pricing {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin-bottom: 8px;
}
.preorder-was-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}
.preorder-was {
  font-family: 'Oswald', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: #555;
  text-decoration: line-through;
  text-decoration-thickness: 3px;
  text-decoration-color: #666;
}
.preorder-savings {
  background: #fff;
  color: #000;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 3px 10px;
  border-radius: 20px;
}
.preorder-price {
  font-family: 'Oswald', sans-serif;
  font-size: 3.8rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}
.preorder-label {
  font-size: 0.75rem;
  color: #888;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border: 1px solid #333;
  padding: 3px 10px;
  border-radius: 20px;
}
.preorder-ships {
  color: #888;
  font-size: 0.85rem;
  margin-bottom: 28px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.preorder-secure {
  color: #555;
  font-size: 0.8rem;
  margin-top: 14px;
}
.preorder-amazon {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid #2a2a2a;
}
.preorder-amazon p { color: #666; font-size: 0.82rem; margin-bottom: 4px; }
.preorder-amazon a {
  color: #ff9900;
  font-size: 0.9rem;
  font-weight: 600;
  transition: color 0.2s;
}
.preorder-amazon a:hover { color: #ffb733; }

/* ===== FAQ ===== */
.faq-section { padding: 96px 24px; }
.faq-section h2 { margin-bottom: 48px; }
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid #e0e0e0; }
.faq-q {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: 'Oswald', sans-serif;
  font-size: 1.05rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #111;
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color 0.2s;
}
.faq-q:hover { color: #555; }
.faq-arrow {
  font-size: 1.1rem;
  transition: transform 0.25s;
  flex-shrink: 0;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-a {
  display: none;
  padding: 0 0 20px;
  font-size: 0.95rem;
  color: #555;
  line-height: 1.75;
  max-width: 660px;
}
.faq-item.open .faq-a { display: block; }

/* ===== FOOTER ===== */
footer {
  background: #000;
  padding: 48px 24px;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}
.footer-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  width: 100%;
}
.footer-logo { height: 44px; width: auto; }
.footer-links {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-links a {
  color: #666;
  font-size: 0.88rem;
  transition: color 0.2s;
}
.footer-links a:hover { color: #fff; }
.footer-bottom {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-top: 1px solid #1a1a1a;
  padding-top: 24px;
  width: 100%;
}
.footer-bottom p {
  color: #444;
  font-size: 0.8rem;
}

/* ===== PARTS & ACCESSORIES ===== */
.parts-section { padding: 96px 24px; }
.parts-section h2 { margin-bottom: 16px; }
.parts-section .body-large { margin-bottom: 56px; }
.parts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
  text-align: left;
}
.part-card {
  background: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s;
}
.part-card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.1); }
.part-img-wrap {
  width: 100%;
  aspect-ratio: 4/3;
  background: #f0f0f0;
  overflow: hidden;
}
.part-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.part-img-wrap.no-img {
  display: flex;
  align-items: center;
  justify-content: center;
}
.part-img-wrap.no-img::after {
  content: 'Photo coming soon';
  font-size: 0.8rem;
  color: #aaa;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.part-img-wrap.no-img img { display: none; }
.part-info {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.part-info h3 {
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
  color: #111;
}
.part-info p {
  font-size: 0.88rem;
  color: #666;
  line-height: 1.65;
  flex: 1;
  margin-bottom: 16px;
}
.part-price {
  font-family: 'Oswald', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: #111;
  margin-bottom: 16px;
}
.btn-part {
  display: block;
  background: #111;
  color: #fff;
  font-family: 'Oswald', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 12px 20px;
  border-radius: 3px;
  text-align: center;
  transition: background 0.2s;
}
.btn-part:hover { background: #333; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .hero { padding: 60px 24px; min-height: auto; }
  .hero-inner { flex-direction: column; gap: 40px; }
  .hero-visual { order: -1; max-width: 100%; }
  .hero-content { max-width: 100%; }

  .feature-inner,
  .feature-inner.reverse { flex-direction: column; gap: 40px; }

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

  .reviews-grid { grid-template-columns: 1fr; }

  .preorder-inner { flex-direction: column; }
  .preorder-box { flex: none; width: 100%; max-width: 420px; }

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

  .proof-bar { gap: 0; }
  .proof-item { padding: 8px 12px; font-size: 0.8rem; }
}

@media (max-width: 600px) {
  /* Nav */
  nav { padding: 0 16px; }
  .nav-logo { height: 34px; }
  .btn-nav { font-size: 0.78rem; padding: 8px 14px; }

  /* Hero */
  .hero { padding: 40px 20px; }
  .hero h1 { font-size: 2.6rem; }
  .hero-sub { font-size: 1rem; }
  .hero-price { flex-direction: column; align-items: flex-start; gap: 12px; }
  .btn-primary { font-size: 0.95rem; padding: 14px 24px; }

  /* Proof bar — single column */
  .proof-bar { flex-direction: column; align-items: flex-start; padding: 12px 20px; gap: 4px; }
  .proof-item { padding: 6px 0; font-size: 0.85rem; }

  /* Sections */
  .feature-section, .specs-section, .reviews-section,
  .email-section, .preorder-section, .faq-section,
  .parts-section, .problem-section { padding: 64px 20px; }

  /* Specs */
  h2 { font-size: 1.8rem; }
  .specs-grid { grid-template-columns: repeat(2, 1fr); }
  .spec-number { font-size: 2.4rem; }
  .spec-item { padding: 28px 16px; }

  /* Parts */
  .parts-grid { grid-template-columns: 1fr; }

  /* Email form */
  .email-form { flex-direction: column; }
  .email-form input, .email-form button { width: 100%; }

  /* Preorder box */
  .preorder-box { flex: none; width: 100%; max-width: 100%; padding: 28px 20px; }
  .preorder-price { font-size: 3rem; }

  /* FAQ */
  .faq-q { font-size: 0.9rem; }
}

/* ===== CONTACT ===== */
.contact-section { padding: 100px 0; }
.contact-section h2 { margin-bottom: 50px; }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  max-width: 800px;
  margin: 0 auto 48px;
}

.contact-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.contact-icon {
  font-size: 1.75rem;
  margin-bottom: 4px;
}

.contact-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #888;
}

.contact-item a, .contact-item p {
  font-size: 0.95rem;
  color: #111;
  line-height: 1.6;
  text-align: center;
}

.contact-item a:hover { text-decoration: underline; }

.social-bar {
  display: flex;
  justify-content: center;
  gap: 24px;
}

.social-link {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #111;
  border-bottom: 2px solid #111;
  padding-bottom: 2px;
  transition: opacity 0.2s;
}

.social-link:hover { opacity: 0.5; }

@media (max-width: 600px) {
  .contact-grid { grid-template-columns: 1fr; gap: 24px; }
}