/* Lynepad – dark theme, refined */

:root {
  --color-bg: #0a0a0a;
  --color-bg-secondary: #141414;
  --color-bg-card: #1a1a1a;
  --color-text: #f0f0f0;
  --color-text-muted: #9ca3af;
  --color-btn-primary-bg: #ffffff;
  --color-btn-primary-text: #0a0a0a;
  --color-btn-primary-hover-bg: #e8e8e8;
  --color-link: #c4c4c4;
  --color-link-hover: #ffffff;
  --color-border: #262626;
  --color-border-subtle: #1f1f1f;
  --color-notice-bg: #2a2200;
  --color-notice-text: #f5ecd0;
  --color-notice-border: #4a3d10;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --container: 1100px;
  --section-padding: 5rem 1.5rem;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --transition: 0.2s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

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

a {
  color: var(--color-link);
  text-decoration: none;
}

a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: block;
  line-height: 0;
  transition: opacity var(--transition);
}

.logo:hover {
  opacity: 0.85;
}

.logo img {
  height: 38px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav a {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
  transition: color var(--transition);
}

.nav a:hover {
  color: var(--color-link-hover);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 52px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: 1rem 1.5rem;
    gap: 0.75rem;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.2s, opacity 0.2s, visibility 0.2s;
  }

  .nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-toggle {
    display: flex;
  }
}

/* Availability banner – high visibility */
.availability-banner {
  background: var(--color-notice-bg);
  color: var(--color-notice-text);
  padding: 1rem 1.5rem;
  text-align: center;
  border-bottom: 2px solid var(--color-notice-border);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
}

.banner-inner {
  max-width: var(--container);
  margin: 0 auto;
}

.availability-banner p {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.availability-banner strong {
  font-weight: 700;
}

.availability-banner a {
  color: #fff8e0;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.availability-banner a:hover {
  text-decoration: none;
  color: #ffffff;
}

/* Hero – content at bottom so keyboard in center stays visible */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 2rem 1.5rem 4rem;
}

.hero-image-wrap {
  position: absolute;
  inset: 0;
  line-height: 0;
}

.hero-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.2) 0%,
    rgba(0, 0, 0, 0.35) 40%,
    rgba(0, 0, 0, 0.6) 70%,
    rgba(0, 0, 0, 0.85) 100%
  );
  pointer-events: none;
}

.hero-text {
  position: relative;
  z-index: 1;
  max-width: 640px;
  width: 100%;
  margin: 0 auto;
  text-align: center;
}

.hero-title {
  margin: 0 0 1.25rem;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  color: var(--color-text);
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.4);
}

.hero-title strong {
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero-desc {
  margin: 0 0 2rem;
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  max-width: 44ch;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9375rem 1.875rem;
  font-family: var(--font);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.btn:hover {
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 2px;
}

a:focus-visible {
  outline: 2px solid var(--color-link);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--color-btn-primary-bg);
  color: var(--color-btn-primary-text);
  border: 1px solid var(--color-btn-primary-bg);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--color-btn-primary-hover-bg);
  border-color: var(--color-btn-primary-hover-bg);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text);
  border-color: rgba(255, 255, 255, 0.6);
}

/* Container */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Three feature cards */
.features-row {
  padding: var(--section-padding);
  background: var(--color-bg-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
}

.feature-card {
  text-align: center;
  padding: 2rem 1.5rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.feature-card img,
.feature-card .feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1.25rem;
  object-fit: contain;
  opacity: 0.95;
}

.feature-card .feature-icon {
  background: linear-gradient(135deg, #2a2a2a, #1a1a1a);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  position: relative;
  overflow: hidden;
}

.feature-card .feature-icon::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 24px;
  height: 24px;
  background: var(--color-text);
  opacity: 0.3;
  border-radius: 4px;
}

.feature-card h3 {
  margin: 0 0 0.5rem;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text);
}

.feature-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* Aluminum hero – short section with bg image, black overlay, text on top */
.aluminum-hero {
  position: relative;
  min-height: 38vh;
  max-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: url("../img/Brushed-Aluminum-Sheet2.jpg");
  background-size: cover;
  background-position: center;
  padding: 3rem 1.5rem;
}

.aluminum-hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  pointer-events: none;
}

.aluminum-hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 640px;
}

.aluminum-hero .section-heading {
  margin-bottom: 0.5rem;
}

.aluminum-hero .section-lead {
  margin: 0;
  color: var(--color-text-muted);
}

/* Full-bleed image sections */
.full-bleed {
  width: 100%;
  line-height: 0;
  overflow: hidden;
}

.full-bleed img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

/* Sections */
.section {
  padding: var(--section-padding);
}

.section-aluminum {
  text-align: center;
}

.section-heading {
  margin: 0 0 0.75rem;
  font-size: clamp(1.5rem, 3.2vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  text-transform: uppercase;
  color: var(--color-text);
  line-height: 1.2;
}

.section-heading strong {
  font-weight: 800;
}

.section-lead {
  margin: 0 0 2.5rem;
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-left: auto;
  margin-right: auto;
}

.section-image {
  max-width: 880px;
  margin: 0 auto;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.section-image img {
  width: 100%;
  display: block;
}

/* Feature blocks (Every second / Thumbwheel / Multilayer) */
.section-feature-blocks {
  background: var(--color-bg-secondary);
}

.feature-blocks {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .feature-blocks {
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
  }
}

.feature-block {
  text-align: center;
  padding: 1.5rem 1rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.feature-block:hover {
  background: rgba(255, 255, 255, 0.02);
}

.feature-block h3 {
  margin: 0 0 0.625rem;
  font-size: 0.9375rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text);
}

.feature-block h4 {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* Gallery */
.section-gallery .gallery-three {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 768px) {
  .section-gallery .gallery-three {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }
}

.gallery-three img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

/* Support section */
.section-support {
  text-align: center;
}

.section-support .section-lead {
  margin-bottom: 2rem;
  font-size: 1.125rem;
}

.section-support .btn {
  margin-top: 0.25rem;
}

/* Testimonial */
.section-testimonial {
  background: var(--color-bg-secondary);
}

.testimonial {
  margin: 0;
  padding: 2.5rem 2rem 2.5rem 2.25rem;
  border: none;
  text-align: center;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  border-left: 3px solid rgba(255, 255, 255, 0.15);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--color-bg-card);
}

.testimonial-quote {
  font-size: 1.5rem;
  font-style: italic;
  color: var(--color-text);
  margin: 0 0 1rem;
  line-height: 1.5;
}

.testimonial-meta {
  margin: 0 0 0.5rem;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.testimonial a {
  font-size: 0.9rem;
  font-weight: 500;
}

/* FAQ */
.section-faq .section-heading {
  margin-bottom: 2.5rem;
}

.faq-list {
  margin: 0;
  padding: 0;
  list-style: none;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.faq-item {
  padding: 1.25rem 1rem;
  margin: 0 -1rem;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
  border-radius: var(--radius-sm);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item:hover {
  background: rgba(255, 255, 255, 0.02);
}

.faq-item dt {
  margin: 0 0 0.4rem;
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text);
  padding-right: 1rem;
}

.faq-item dd {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

.faq-item dd a {
  text-underline-offset: 2px;
}

/* Footer */
.site-footer {
  padding: 3rem 1.5rem;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.site-footer .container {
  max-width: var(--container);
  margin: 0 auto;
}

.footer-brand {
  margin: 0 0 0.75rem;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.02em;
  color: var(--color-text);
}

.site-footer a {
  color: var(--color-text-muted);
  transition: color var(--transition);
  text-underline-offset: 2px;
}

.site-footer a:hover {
  color: var(--color-text);
}

.site-footer p {
  margin: 0.35rem 0;
}

/* ========== Mobile & responsive ========== */
@media (max-width: 768px) {
  :root {
    --section-padding: 3rem 1rem;
  }

  body {
    overflow-x: hidden;
  }

  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .header-inner {
    padding: 0.75rem 1rem;
  }

  .logo img {
    height: 32px;
  }

  .availability-banner {
    padding: 1rem;
  }

  .availability-banner p {
    font-size: 1rem;
  }

  /* Hero: taller, text at bottom so keyboard visible */
  .hero {
    min-height: 100vh;
    padding: 1.5rem 1rem 2.5rem;
  }

  .hero-title {
    font-size: clamp(1.5rem, 7vw, 2rem);
    margin-bottom: 0.75rem;
  }

  .hero-desc {
    font-size: 1rem;
    margin-bottom: 1.5rem;
  }

  .hero-cta {
    gap: 0.75rem;
    flex-direction: column;
    align-items: center;
  }

  .hero-cta .btn {
    width: 100%;
    max-width: 280px;
    min-height: 48px;
    padding: 0.875rem 1.5rem;
  }

  /* Buttons: touch-friendly */
  .btn {
    min-height: 48px;
    padding: 0.875rem 1.5rem;
  }

  .section-support .btn {
    width: 100%;
    max-width: 280px;
  }

  /* Aluminum hero: less tall on mobile */
  .aluminum-hero {
    min-height: 32vh;
    max-height: 320px;
    padding: 2rem 1rem;
  }

  .aluminum-hero .section-heading {
    font-size: clamp(1.2rem, 4.5vw, 1.5rem);
  }

  .aluminum-hero .section-lead {
    font-size: 0.9375rem;
  }

  /* Feature cards */
  .feature-card {
    padding: 1.5rem 1rem;
  }

  .feature-card h3 {
    font-size: 0.75rem;
    letter-spacing: 0.08em;
  }

  .feature-card p {
    font-size: 0.875rem;
  }

  /* Section headings */
  .section-heading {
    font-size: clamp(1.25rem, 5vw, 1.5rem);
  }

  .section-lead {
    font-size: 1rem;
    margin-bottom: 2rem;
  }

  /* Testimonial */
  .testimonial {
    padding: 1.75rem 1.25rem 1.75rem 1.5rem;
  }

  .testimonial-quote {
    font-size: 1.25rem;
  }

  /* FAQ */
  .faq-item {
    padding: 1rem 0.75rem;
    margin: 0 -0.75rem;
  }

  .faq-item dt {
    font-size: 0.9375rem;
  }

  .faq-item dd {
    font-size: 0.875rem;
  }

  /* Footer */
  .site-footer {
    padding: 2rem 1rem;
    font-size: 0.875rem;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 1rem 0.75rem 2rem;
  }

  .hero-title {
    font-size: 1.375rem;
  }

  .aluminum-hero {
    min-height: 28vh;
    max-height: 260px;
  }

  .section-image {
    margin-left: -0.75rem;
    margin-right: -0.75rem;
    max-width: none;
    border-radius: 0;
  }
}