/*
Theme Name: Aether International Trade
Theme URI: https://aethergx.com
Author: Aether International Trade
Author URI: https://aethergx.com
Description: Custom B2B semiconductor trading website theme for Aether International Trade (Guangxi) Co., Ltd. Includes automatic dark mode support following system preference.
Version: 1.1.0
License: Private
Text Domain: aether
*/


  :root {
    --bg:      #F4F6F9;
    --bg2:     #EDF0F5;
    --bg3:     #FFFFFF;
    --bg-dark: #0A0F1E;
    --accent:  #00A688;
    --blue:    #0055CC;
    --ink:     #1A2236;
    --ink2:    #2E3D55;
    --mid:     #6B7A94;
    --dim:     #9AA3B2;
    --border:  #DDE2EC;
    --white:   #FFFFFF;
    --mono:    'Space Mono', monospace;
    --sans:    'Inter', sans-serif;
  }

  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }

  body {
    background: var(--bg);
    color: var(--ink2);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
  }

  /* ── CIRCUIT BACKGROUND ── */
  #bg-canvas {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    width: 100vw;
    height: 100vh;
  }

  /* ── NAV ── */
  nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 48px;
    height: 68px;
    background: rgba(244,246,249,0.94);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
  }

  .nav-logo {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
  }

  .nav-logo-text {
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 700;
    color: var(--ink);
    letter-spacing: 0.07em;
    line-height: 1.3;
  }

  .nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
    list-style: none;
  }

  .nav-links a {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--mid);
    text-decoration: none;
    transition: color 0.2s;
  }
  .nav-links a:hover { color: var(--ink); }

  .nav-right { display: flex; align-items: center; gap: 16px; }

  .lang-toggle {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    color: var(--mid);
    background: none;
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 4px 10px;
    cursor: pointer;
    transition: all 0.2s;
  }
  .lang-toggle:hover { border-color: var(--ink); color: var(--ink); }

  .nav-cta {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--white);
    background: var(--ink);
    border: none;
    border-radius: 3px;
    padding: 8px 18px;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s;
  }
  .nav-cta:hover { background: var(--ink2); }

  /* ── HERO ── */
  .hero {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 120px 48px 80px;
    max-width: 1200px;
    margin: 0 auto;
  }

  .hero-eyebrow {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.26em;
    text-transform: uppercase;
    color: var(--mid);
    margin-bottom: 28px;
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .hero-eyebrow::before {
    content: '';
    display: block;
    width: 28px; height: 1px;
    background: var(--accent);
  }

  .hero-headline {
    font-family: var(--mono);
    font-size: clamp(34px, 4.8vw, 62px);
    font-weight: 700;
    color: var(--ink);
    line-height: 1.14;
    letter-spacing: -0.015em;
    margin-bottom: 24px;
  }
  .hero-headline .hl { color: var(--ink); position: relative; display: inline-block; }
  .hero-headline .hl::after {
    content: '';
    position: absolute;
    bottom: 2px; left: 0; right: 0;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
  }

  .hero-sub {
    font-size: 17px;
    font-weight: 300;
    color: var(--mid);
    max-width: 500px;
    margin-bottom: 48px;
    line-height: 1.75;
  }

  .hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 72px; }

  .btn-primary {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--white);
    background: var(--ink);
    border: none;
    border-radius: 3px;
    padding: 14px 26px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: background 0.2s;
  }
  .btn-primary:hover { background: var(--ink2); }

  .btn-ghost {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink2);
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 14px 26px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s;
  }
  .btn-ghost:hover { border-color: var(--ink2); }

  .hero-stats {
    display: flex;
    gap: 48px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
  }
  .stat-num {
    font-family: var(--mono);
    font-size: 28px;
    font-weight: 700;
    color: var(--ink);
    line-height: 1;
    margin-bottom: 4px;
  }
  .stat-num span { color: var(--accent); }
  .stat-label { font-size: 11px; color: var(--dim); letter-spacing: 0.04em; }

  /* ── SECTIONS ── */
  section { position: relative; z-index: 1; }
  .container { max-width: 1200px; margin: 0 auto; padding: 0 48px; }

  .section-eyebrow {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.26em;
    text-transform: uppercase;
    color: var(--mid);
    margin-bottom: 14px;
  }

  .section-title {
    font-family: var(--mono);
    font-size: clamp(22px, 2.8vw, 34px);
    font-weight: 700;
    color: var(--ink);
    line-height: 1.2;
    margin-bottom: 14px;
  }

  .section-body {
    font-size: 15px;
    color: var(--mid);
    max-width: 460px;
    line-height: 1.75;
  }

  /* ── PRODUCTS ── */
  .products {
    padding: 100px 0;
    background: rgba(255,255,255,0.82);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .products-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 48px;
  }

  .products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
  }

  .product-card {
    background: rgba(255,255,255,0.88);
    padding: 32px 28px;
    cursor: pointer;
    transition: background 0.2s;
    position: relative;
  }
  .product-card:hover { background: rgba(237,240,245,0.92); }
  .product-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 2px;
    background: var(--accent);
    opacity: 0;
    transition: opacity 0.25s;
  }
  .product-card:hover::before { opacity: 1; }

  .product-icon { width: 36px; height: 36px; margin-bottom: 18px; }

  .product-name {
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 700;
    color: var(--ink);
    letter-spacing: 0.05em;
    margin-bottom: 10px;
  }

  .product-desc { font-size: 13px; color: var(--mid); line-height: 1.65; margin-bottom: 18px; }

  .product-link {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--ink2);
    text-decoration: none;
    display: flex; align-items: center; gap: 6px;
    transition: color 0.2s;
  }
  .product-link::after { content: '→'; transition: transform 0.2s; }
  .product-card:hover .product-link { color: var(--accent); }
  .product-card:hover .product-link::after { transform: translateX(4px); }

  /* ── WHY ── */
  .why { padding: 100px 0; background: rgba(244,246,249,0.78); }

  .why-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 72px;
    align-items: start;
    margin-top: 60px;
  }

  .why-list { display: flex; flex-direction: column; gap: 0; }

  .why-item {
    display: flex;
    gap: 20px;
    padding: 28px 0;
    border-bottom: 1px solid var(--border);
  }
  .why-item:first-child { border-top: 1px solid var(--border); }

  .why-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
    margin-top: 8px;
  }

  .why-title {
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 6px;
    letter-spacing: 0.04em;
  }

  .why-text { font-size: 13px; color: var(--mid); line-height: 1.72; }

  .cert-panel {
    background: rgba(255,255,255,0.88);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 36px 32px;
    position: sticky;
    top: 88px;
  }

  .cert-title {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--mid);
    margin-bottom: 24px;
  }

  .cert-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 28px; }

  .cert-badge {
    background: rgba(237,240,245,0.80);
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 16px;
    text-align: center;
  }

  .cert-badge-name {
    font-family: var(--mono);
    font-size: 15px;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 4px;
  }

  .cert-badge-sub { font-size: 11px; color: var(--mid); }

  .cert-note {
    font-size: 12px;
    color: var(--dim);
    line-height: 1.65;
    border-top: 1px solid var(--border);
    padding-top: 20px;
  }

  /* ── INQUIRY ── */
  .inquiry {
    padding: 100px 0;
    background: rgba(255,255,255,0.82);
    border-top: 1px solid var(--border);
  }

  .inquiry-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }

  .contact-methods { display: flex; flex-direction: column; gap: 12px; margin-top: 36px; }

  .contact-method {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    background: rgba(237,240,245,0.80);
    border: 1px solid var(--border);
    border-radius: 3px;
    text-decoration: none;
    transition: border-color 0.2s;
  }
  .contact-method:hover { border-color: var(--ink2); }

  .cm-icon {
    width: 34px; height: 34px;
    background: rgba(255,255,255,0.9);
    border: 1px solid var(--border);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
  }

  .cm-label {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: none;
    color: var(--mid);
    margin-bottom: 1px;
  }

  .cm-value { font-size: 14px; color: var(--ink2); }

  /* Form */
  .inquiry-form { display: flex; flex-direction: column; gap: 14px; }

  .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

  .form-group { display: flex; flex-direction: column; gap: 6px; }

  .form-label {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: none;
    color: var(--mid);
  }

  .form-input, .form-select, .form-textarea {
    background: rgba(237,240,245,0.85);
    border: 1px solid var(--border);
    border-radius: 3px;
    color: var(--ink);
    font-family: var(--sans);
    font-size: 14px;
    padding: 11px 14px;
    outline: none;
    transition: border-color 0.2s;
    width: 100%;
  }
  .form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--ink2); }
  .form-input::placeholder, .form-textarea::placeholder { color: var(--dim); }
  .form-select option { background: var(--bg3); }
  .form-textarea { resize: vertical; min-height: 110px; }

  .form-submit {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #08101F !important;
    -webkit-text-fill-color: #08101F !important;
    background: #3DBDA6 !important;
    border: none;
    border-radius: 3px;
    padding: 14px 28px;
    cursor: pointer;
    transition: background 0.2s;
    width: 100%;
    margin-top: 4px;
    opacity: 1 !important;
  }
  .form-submit:hover {
    background: #2EA898 !important;
    color: #08101F !important;
    -webkit-text-fill-color: #08101F !important;
  }

  .form-note { font-size: 11px; color: var(--dim); text-align: center; }

  /* ── DARK STRIP (CTA banner) ── */
  .dark-strip {
    background: var(--bg-dark);
    padding: 72px 0;
    position: relative;
    z-index: 1;
    overflow: hidden;
  }

  .dark-strip-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
  }

  .dark-strip h2 {
    font-family: var(--mono);
    font-size: clamp(20px, 2.5vw, 30px);
    font-weight: 700;
    color: #E8EDF5;
    line-height: 1.25;
  }

  .dark-strip p {
    font-size: 14px;
    color: #4B6080;
    margin-top: 10px;
    max-width: 420px;
  }

  .btn-light {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--bg-dark);
    background: #C8D0E0;
    border: none;
    border-radius: 3px;
    padding: 14px 28px;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    transition: background 0.2s;
    flex-shrink: 0;
  }
  .btn-light:hover { background: #E8EDF5; }

  /* ── FOOTER ── */
  footer {
    position: relative; z-index: 1;
    background: rgba(237,240,245,0.92);
    border-top: 1px solid var(--border);
    padding: 60px 0 32px;
  }

  .footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 28px;
  }

  .footer-logo {
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 12px;
  }

  .footer-desc { font-size: 13px; color: var(--mid); line-height: 1.7; max-width: 300px; margin-bottom: 16px; }
  .footer-address { font-size: 12px; color: var(--dim); line-height: 1.7; }

  .footer-col-title {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--mid);
    margin-bottom: 16px;
  }

  .footer-links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
  .footer-links a { font-size: 13px; color: var(--mid); text-decoration: none; transition: color 0.2s; }
  .footer-links a:hover { color: var(--ink); }

  .footer-bottom { display: flex; justify-content: space-between; align-items: center; }
  .footer-copy { font-family: var(--mono); font-size: 11px; color: var(--dim); }
  .footer-zone { font-family: var(--mono); font-size: 10px; color: var(--dim); }

  /* ── LANG ── */
  .lang-zh [data-en] { display: none; }
  .lang-zh [data-zh] { display: block; }
  .lang-en [data-zh] { display: none; }
  .lang-en [data-en] { display: block; }
  span[data-en], span[data-zh] { display: inline; }
  .lang-zh span[data-en] { display: none; }
  .lang-en span[data-zh] { display: none; }

  /* ── REVEAL ── */
  .reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.55s ease, transform 0.55s ease; }
  .reveal.visible { opacity: 1; transform: none; }

  /* ── RESPONSIVE ── */
  @media (max-width: 900px) {
    nav { padding: 0 24px; }
    .nav-links { display: none; }
    .hero, .container { padding-left: 24px; padding-right: 24px; }
    .products-grid { grid-template-columns: 1fr; }
    .why-grid, .inquiry-inner, .footer-inner { grid-template-columns: 1fr; gap: 40px; }
    .form-row { grid-template-columns: 1fr; }
    .hero-stats { gap: 28px; flex-wrap: wrap; }
    .dark-strip-inner { flex-direction: column; align-items: flex-start; }
  }

  /* ── DARK MODE ── */
  @media (prefers-color-scheme: dark) {
    :root {
      --bg:     #0E1118;
      --bg2:    #141920;
      --bg3:    #1A2030;
      --ink:    #D4DAE5;
      --ink2:   #A8B4C4;
      --mid:    #7A90A8;
      --dim:    #4A5E72;
      --border: #2A3548;
      --white:  #D4DAE5;
      --silver: #2A3548;
    }
    nav {
      background: rgba(14,17,24,0.94);
      border-bottom-color: rgba(255,255,255,0.06);
    }
    .product-card { background: rgba(20,25,32,0.92); }
    .product-card:hover { background: rgba(26,32,44,0.96); }
    .cert-panel { background: rgba(20,25,32,0.92); }
    .cert-badge { background: rgba(26,32,44,0.80); }
    .contact-method { background: rgba(20,25,32,0.88); }
    .cm-icon { background: rgba(26,32,44,0.90); }
    .form-input, .form-select, .form-textarea { background: rgba(20,25,32,0.88); color: var(--ink); }
    footer { background: rgba(14,17,24,0.94); }
    .inquiry { background: rgba(14,17,24,0.88); }
    .products { background: rgba(20,25,32,0.85); }
    .why { background: rgba(14,17,24,0.82); }
    /* Buttons: teal on both light and dark — WordPress themes cannot override */
    .nav-cta, .btn-primary, .form-submit,
    .wpcf7-form input[type="submit"],
    input[type="submit"], button[type="submit"] {
      background: #3DBDA6 !important;
      color: #08101F !important;
      -webkit-text-fill-color: #08101F !important;
      opacity: 1 !important;
    }
    .nav-cta:hover, .btn-primary:hover, .form-submit:hover,
    .wpcf7-form input[type="submit"]:hover,
    input[type="submit"]:hover, button[type="submit"]:hover {
      background: #2EA898 !important;
      color: #08101F !important;
      -webkit-text-fill-color: #08101F !important;
    }
    /* SVG icons hardcoded with dark stroke/fill become invisible on dark bg — invert them */
    .product-icon, .cm-icon svg {
      filter: invert(0.55) brightness(0.85);
      opacity: 0.75;
    }
    /* Form placeholder text should be dimmer than actual typed content */
    .form-input::placeholder,
    .form-textarea::placeholder,
    .wpcf7-form input::placeholder,
    .wpcf7-form textarea::placeholder {
      color: var(--dim);
      opacity: 0.65;
    }
    /* CF7 submit already covered above — keep block for specificity */
    .wpcf7-form input[type="submit"] {
      background: #3DBDA6 !important;
      color: #08101F !important;
      -webkit-text-fill-color: #08101F !important;
    }
    .wpcf7-form input[type="submit"]:hover {
      background: #2EA898 !important;
      color: #08101F !important;
      -webkit-text-fill-color: #08101F !important;
    }
  }



/* ── Contact Form 7 styling override ── */
.wpcf7-form { display: flex; flex-direction: column; gap: 14px; }
.wpcf7-form p { margin: 0; }
.wpcf7-form input[type="text"],
.wpcf7-form input[type="email"],
.wpcf7-form input[type="tel"],
.wpcf7-form select,
.wpcf7-form textarea {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 14px;
  padding: 11px 14px;
  outline: none;
  width: 100%;
  transition: border-color 0.2s;
}
.wpcf7-form input:focus,
.wpcf7-form select:focus,
.wpcf7-form textarea:focus { border-color: var(--ink2); }
.wpcf7-form textarea { resize: vertical; min-height: 110px; }
.wpcf7-form input[type="submit"] {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #08101F !important;
  -webkit-text-fill-color: #08101F !important;
  background: #3DBDA6 !important;
  border: none;
  border-radius: 3px;
  padding: 14px 28px;
  cursor: pointer;
  width: 100%;
  margin-top: 4px;
  transition: background 0.2s;
  opacity: 1 !important;
}
.wpcf7-form input[type="submit"]:hover {
  background: #2EA898 !important;
  color: #08101F !important;
  -webkit-text-fill-color: #08101F !important;
}
.wpcf7-form .wpcf7-not-valid-tip { font-size: 12px; color: #C84B4B; margin-top: 4px; }
.wpcf7-response-output {
  font-size: 12px;
  color: var(--mid);
  border: 1px solid var(--border) !important;
  border-radius: 3px;
  padding: 10px 14px !important;
  margin-top: 12px !important;
}