/* ===== Asher Tools - Modern Industrial CSS ===== */

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

:root {
  --max-width: 1280px;
  --content-width: 1100px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --radius: 4px;
  --transition: 0.25s ease;
}

/* Style A: Charcoal + Safety Orange */
.style-a {
  --color-bg: #ffffff;
  --color-bg-alt: #F5F5F5;
  --color-bg-dark: #1A1A1A;
  --color-bg-darker: #0D0D0D;
  --color-text: #1A1A1A;
  --color-text-muted: #525252;
  --color-text-on-dark: #ffffff;
  --color-text-on-dark-muted: #B8B8B8;
  --color-accent: #FF6B00;
  --color-accent-hover: #E55C00;
  --color-border: #E0E0E0;
  --color-border-dark: #2A2A2A;
}

/* Style B: Industrial Navy */
.style-b {
  --color-bg: #ffffff;
  --color-bg-alt: #F4F7FA;
  --color-bg-dark: #0F2A44;
  --color-bg-darker: #0A1F33;
  --color-text: #0F2A44;
  --color-text-muted: #5C7081;
  --color-text-on-dark: #ffffff;
  --color-text-on-dark-muted: #B8C5D1;
  --color-accent: #4A90B8;
  --color-accent-hover: #3B7B9E;
  --color-border: #DDE5ED;
  --color-border-dark: #1F3D5C;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }

.container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.logo-mark {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-text { display: flex; flex-direction: column; line-height: 1; }
.logo-text .name { font-weight: 800; }
.logo-text .est { font-size: 0.625rem; font-weight: 500; color: var(--color-text-muted); letter-spacing: 0.1em; margin-top: 2px; }

.main-nav { display: flex; gap: 2rem; align-items: center; }
.main-nav a { font-size: 0.9rem; font-weight: 500; color: var(--color-text-muted); }
.main-nav a:hover { color: var(--color-accent); }
.main-nav a.cta {
  background: var(--color-accent);
  color: white;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
}
.main-nav a.cta:hover { background: var(--color-accent-hover); color: white; }

.mobile-toggle { display: none; background: none; border: none; cursor: pointer; }

/* ===== Hero ===== */
.hero {
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  padding: var(--space-xl) 0 var(--space-xl);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(135deg, rgba(0,0,0,0.4) 0%, transparent 60%),
    repeating-linear-gradient(45deg, transparent 0, transparent 40px, rgba(255,255,255,0.02) 40px, rgba(255,255,255,0.02) 41px);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 1.75rem;
  color: var(--color-text-on-dark-muted);
}

.hero-badge .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 12px var(--color-accent);
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.hero h1 .accent { color: var(--color-accent); }

.hero-sub {
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  color: var(--color-text-on-dark-muted);
  margin-bottom: 2.5rem;
  max-width: 600px;
  line-height: 1.6;
}

.hero-cta-group { display: flex; gap: 1rem; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.95rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--color-accent);
  color: white !important;
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: white !important;
  border: 1px solid rgba(255,255,255,0.3);
}
.btn-secondary:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.5); }

/* ===== Stats Strip ===== */
.stats-strip {
  background: var(--color-bg-darker);
  color: var(--color-text-on-dark);
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-border-dark);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.stat-item {
  text-align: center;
  padding: 1rem;
}
.stat-num {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-on-dark-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 500;
}

/* ===== Section Base ===== */
.section {
  padding: var(--space-xl) 0;
}
.section-alt { background: var(--color-bg-alt); }
.section-dark { background: var(--color-bg-dark); color: var(--color-text-on-dark); }

.section-header { max-width: 720px; margin: 0 auto var(--space-lg); text-align: center; }
.section-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
}
.section h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
.section-lead {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}
.section-dark .section-lead { color: var(--color-text-on-dark-muted); }

/* ===== Value Pillars ===== */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.pillar-card {
  background: var(--color-bg);
  padding: 2.5rem 2rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}
.pillar-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}
.pillar-icon {
  width: 56px;
  height: 56px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--color-accent);
}
.pillar-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.pillar-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===== Product Categories Grid ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}
.product-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 1.75rem 1.5rem;
  text-align: left;
  border-radius: var(--radius);
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.product-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 100%;
  height: 3px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.product-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}
.product-card:hover::after { transform: scaleX(1); }
.product-icon {
  width: 44px;
  height: 44px;
  color: var(--color-accent);
  margin-bottom: 1rem;
}
.product-card h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}
.product-card p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ===== Why Taiwan / Comparison ===== */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: var(--space-lg);
}
.comparison-card {
  padding: 2.5rem;
  border-radius: var(--radius);
  position: relative;
}
.comparison-card.us {
  background: var(--color-bg);
  border: 2px solid var(--color-accent);
  box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.comparison-card.them {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
}
.comparison-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
}
.us .comparison-label { background: var(--color-accent); color: white; }
.them .comparison-label { background: var(--color-text-muted); color: white; }
.comparison-card h3 { font-size: 1.5rem; font-weight: 800; margin-bottom: 1.5rem; }
.comparison-list { list-style: none; }
.comparison-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.6rem 0;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}
.comparison-list .check {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-weight: 800;
}
.them .comparison-list .check { color: var(--color-text-muted); }
.comparison-list strong { color: var(--color-text); }

/* ===== ICE+EV Strip ===== */
.dual-coverage {
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-bg-darker) 100%);
  color: var(--color-text-on-dark);
  padding: var(--space-xl) 0;
}
.dual-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.dual-content h2 { color: var(--color-text-on-dark); margin-bottom: 1.5rem; }
.dual-content p { color: var(--color-text-on-dark-muted); margin-bottom: 1.5rem; font-size: 1.05rem; line-height: 1.7; }
.dual-bars {
  display: flex;
  gap: 1.5rem;
}
.dual-bar {
  flex: 1;
  padding: 2rem 1.5rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  text-align: center;
}
.dual-bar h4 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}
.dual-bar.ice h4 { color: var(--color-accent); }
.dual-bar.ev h4 { color: #5DD5C5; }
.dual-bar p {
  font-size: 0.85rem;
  color: var(--color-text-on-dark-muted);
  margin: 0;
}

/* ===== CTA Banner ===== */
.cta-banner {
  background: var(--color-accent);
  color: white;
  padding: var(--space-lg) 0;
  text-align: center;
}
.cta-banner h2 { color: white; margin-bottom: 1rem; }
.cta-banner p { font-size: 1.1rem; margin-bottom: 2rem; opacity: 0.95; }
.cta-banner .btn-primary {
  background: white;
  color: var(--color-bg-dark) !important;
}
.cta-banner .btn-primary:hover { background: var(--color-bg-alt); }

/* ===== Footer ===== */
.site-footer {
  background: var(--color-bg-darker);
  color: var(--color-text-on-dark-muted);
  padding: var(--space-lg) 0 var(--space-md);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: var(--space-lg);
}
.footer-brand h4 {
  color: white;
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 1rem;
}
.footer-brand p { font-size: 0.9rem; line-height: 1.6; margin-bottom: 1rem; }
.footer-col h5 {
  color: white;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.6rem; }
.footer-col ul a { font-size: 0.9rem; color: var(--color-text-on-dark-muted); }
.footer-col ul a:hover { color: var(--color-accent); }
.footer-bottom {
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border-dark);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
}
.footer-bottom a:hover { color: var(--color-accent); }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .pillars-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .comparison-grid { grid-template-columns: 1fr; }
  .dual-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .main-nav { display: none; }
  .mobile-toggle { display: block; }
}

@media (max-width: 600px) {
  .products-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; gap: 1rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: var(--space-lg) 0; }
  .hero { padding: var(--space-lg) 0; }
}

/* ===== Big Product Cards (3-Category Layout) ===== */
.big-products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}
.big-product-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.big-product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.big-product-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
  transform: translateY(-4px);
}
.big-product-card:hover::before { transform: scaleX(1); }

.big-product-icon {
  width: 64px;
  height: 64px;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
}
.big-product-card h3 {
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 0.75rem;
}
.big-product-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 1.5rem;
  flex-grow: 0;
}
.big-product-tags {
  list-style: none;
  margin: 0 0 1.75rem 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex-grow: 1;
}
.big-product-tags li {
  font-size: 0.9rem;
  color: var(--color-text);
  padding-left: 1.25rem;
  position: relative;
}
.big-product-tags li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}
.big-product-cta {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-accent);
  text-decoration: none;
  letter-spacing: 0.02em;
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.big-product-cta:hover {
  color: var(--color-accent-hover);
}

/* Custom sourcing box */
.custom-sourcing-box {
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  padding: 2.5rem;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.custom-sourcing-box h3 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--color-text-on-dark);
}
.custom-sourcing-box p {
  font-size: 0.95rem;
  color: var(--color-text-on-dark-muted);
  margin: 0;
  max-width: 600px;
  line-height: 1.6;
}
.custom-sourcing-box > div { flex: 1 1 400px; }

@media (max-width: 900px) {
  .big-products-grid { grid-template-columns: 1fr; }
  .custom-sourcing-box { flex-direction: column; align-items: flex-start; }
}

/* ===== Inner Page Hero (About, Contact) ===== */
.page-hero {
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  padding: 5rem 0 4rem;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(135deg, rgba(0,0,0,0.3) 0%, transparent 60%),
                    repeating-linear-gradient(45deg, transparent 0, transparent 40px, rgba(255,255,255,0.02) 40px, rgba(255,255,255,0.02) 41px);
  pointer-events: none;
}
.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  position: relative;
}
.page-hero .lead {
  font-size: 1.15rem;
  color: var(--color-text-on-dark-muted);
  max-width: 700px;
  line-height: 1.6;
  position: relative;
}

/* ===== Article Content ===== */
.article-content {
  max-width: 760px;
  margin: 0 auto;
}
.article-content h2 {
  font-size: 1.75rem;
  font-weight: 800;
  margin: 3rem 0 1rem;
  letter-spacing: -0.02em;
}
.article-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
}
.article-content p {
  font-size: 1.05rem;
  line-height: 1.75;
  margin-bottom: 1.25rem;
  color: #2a2a2a;
}
.article-content ul, .article-content ol { margin: 1rem 0 1.5rem 1.5rem; }
.article-content li { margin-bottom: 0.5rem; font-size: 1.05rem; line-height: 1.7; }
.article-content blockquote {
  border-left: 4px solid var(--color-accent);
  padding: 0.5rem 0 0.5rem 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

/* ===== RFQ Form ===== */
.rfq-form {
  background: var(--color-bg);
  padding: 2.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 16px rgba(0,0,0,0.04);
}
.rfq-form h2 { margin-bottom: 0.5rem; }
.rfq-form > p { color: var(--color-text-muted); margin-bottom: 2rem; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}
.form-field { margin-bottom: 1rem; }
.form-field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.4rem;
  letter-spacing: 0.02em;
}
.form-field label .req { color: var(--color-accent); }
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition);
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}
.form-field textarea { min-height: 120px; resize: vertical; }
.form-field .hint { font-size: 0.8rem; color: var(--color-text-muted); margin-top: 0.3rem; }
.form-submit { margin-top: 1rem; }

@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
  .rfq-form { padding: 1.5rem; }
}

/* ===== Two-column About ===== */
.two-col {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
  align-items: start;
}
@media (max-width: 900px) {
  .two-col { grid-template-columns: 1fr; gap: 2rem; }
}
.side-card {
  background: var(--color-bg-alt);
  padding: 2rem;
  border-radius: var(--radius);
  border-left: 4px solid var(--color-accent);
}
.side-card h3 {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--color-bg-dark);
}
.side-card ul { list-style: none; }
.side-card li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
  display: flex;
  justify-content: space-between;
}
.side-card li:last-child { border-bottom: none; }
.side-card li strong { color: var(--color-bg-dark); }

/* ===== Footer B2B Note ===== */
.b2b-note {
  font-size: 0.85rem;
  color: var(--color-text-on-dark-muted);
  border-top: 1px solid var(--color-border-dark);
  padding-top: 1rem;
  margin-top: 1rem;
}