/* =========================================================
   AutoPro Parts — Auto & Motorcycle Parts Export Website
   Color palette: #0A2540 (navy) / #FFFFFF (white) / rgb(31,81,255) (#1F51FF blue)
   ========================================================= */

:root {
  --navy: #0A2540;
  --navy-soft: #123456;
  --blue: rgb(31, 81, 255);
  --blue-dark: #1238cc;
  --white: #ffffff;
  --orange:#F26B1D;
  --gray-100: #f5f7fa;
  --gray-300: #d9e1ea;
  --gray-500: #64748b;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(10, 37, 64, 0.10);
  --font: "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--navy);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container { width: min(1160px, 92%); margin: 0 auto; }

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all .2s ease;
  font-family: var(--font);
}
.btn-primary {
  background: var(--blue);
  color: var(--white);
}
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(31, 81, 255, .35); }
.btn-outline {
  border-color: rgba(255, 255, 255, .7);
  color: var(--white);
}
.btn-outline:hover { background: rgba(255, 255, 255, .12); }
.btn-lg { padding: 15px 34px; font-size: 16px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .6; cursor: not-allowed; transform: none; }

/* ---------- Header ---------- */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(10, 37, 64, .92);
  backdrop-filter: blur(10px);
  padding: 14px 0;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo-mark {
  width: 42px; height: 42px;
  background: var(--blue);
  color: var(--white);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 17px;
}
.logo-text { color: var(--white); font-weight: 700; font-size: 20px; }
.logo-text em { color: var(--orange); font-style: normal;font-size: 26px; }
.nav { display: flex; align-items: center; gap: 28px; }
.nav a {
  color: rgba(255, 255, 255, .85);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  transition: color .2s;
}
.nav a:hover { color: var(--white); }
.nav-cta { background: var(--blue); color: var(--white) !important; padding: 10px 22px; border-radius: 10px; }
.nav-cta:hover { background: var(--blue-dark); }
.menu-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; }
.menu-toggle span { width: 24px; height: 2px; background: var(--white); display: block; }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(1000px 500px at 85% -10%, rgba(31, 81, 255, .35), transparent 60%),
    linear-gradient(135deg, var(--navy) 0%, #0d2f52 100%);
  color: var(--white);
  padding: 170px 0 100px;
}
.hero-inner { display: grid; grid-template-columns: 1.15fr .85fr; gap: 60px; align-items: center; }
.hero-badge {
  display: inline-block;
  background: rgba(31, 81, 255, .18);
  border: 1px solid rgba(31, 81, 255, .5);
  color: #b8c8ff;
  font-size: 13px;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero h1 { font-size: clamp(32px, 4.5vw, 52px); font-weight: 800; line-height: 1.15; }
.hero h1 .highlight { color: #6d8bff; }
.hero-sub { margin: 22px 0 32px; font-size: 18px; color: rgba(255, 255, 255, .78); max-width: 540px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-points { display: flex; gap: 26px; list-style: none; margin-top: 34px; font-size: 14px; color: rgba(255, 255, 255, .85); }
.hero-visual { display: grid; gap: 18px; }
.hero-card {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: var(--radius);
  padding: 28px;
  backdrop-filter: blur(6px);
}
.hero-card-alt { transform: translateX(40px); background: var(--blue); border-color: var(--blue); }
.hero-card-icon { font-size: 34px; }
.hero-card-title { font-size: 20px; font-weight: 700; margin-top: 10px; }
.hero-card-sub { font-size: 14px; color: rgba(255, 255, 255, .75); }

/* ---------- Stats ---------- */
.stats { background: var(--navy); color: var(--white); padding: 0; border-top: 1px solid rgba(255,255,255,.08); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); padding: 34px 0; }
.stat { text-align: center; }
.stat strong { display: block; font-size: 34px; font-weight: 800; color: var(--blue); filter: brightness(1.35); }
.stat span { font-size: 14px; color: rgba(255, 255, 255, .7); }

/* ---------- Sections ---------- */
.section { padding: 90px 0; }
.section-alt { background: var(--gray-100); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 55px; }
.section-tag {
  display: inline-block;
  color: var(--blue);
  background: rgba(31, 81, 255, .09);
  font-weight: 700;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.section-tag.light { background: rgba(255,255,255,.12); color: #9db4ff; }
.section-head h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; margin-bottom: 14px; }
.section-head p { color: var(--gray-500); font-size: 16px; }

.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--white);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  padding: 30px;
  transition: transform .2s ease, box-shadow .2s ease;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: rgba(31, 81, 255, .4); }
.card-icon { font-size: 32px; margin-bottom: 14px; }
.card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.card p { color: var(--gray-500); font-size: 15px; }
.card-line { border-top: 4px solid var(--blue); }

/* ---------- About ---------- */
.about-inner { display: grid; grid-template-columns: 1.2fr .8fr; gap: 60px; align-items: center; }
.about-text h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; margin-bottom: 18px; }
.about-text p { color: var(--gray-500); margin-bottom: 16px; font-size: 15.5px; }
.about-text .btn { margin-top: 10px; }
.about-facts { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.fact {
  background: var(--navy);
  color: var(--white);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
}
.fact strong { display: block; font-size: 30px; font-weight: 800; color: #6d8bff; }
.fact span { font-size: 13px; color: rgba(255, 255, 255, .75); }

/* ---------- Inquiry ---------- */
.section-inquiry {
  background:
    radial-gradient(800px 400px at 15% 0%, rgba(31, 81, 255, .30), transparent 60%),
    var(--navy);
  color: var(--white);
}
.inquiry-inner { display: grid; grid-template-columns: .9fr 1.1fr; gap: 60px; align-items: start; }
.inquiry-info h2 { font-size: clamp(26px, 3.2vw, 36px); font-weight: 800; margin-bottom: 16px; }
.inquiry-info p { color: rgba(255, 255, 255, .78); margin-bottom: 28px; }
.inquiry-contact { list-style: none; display: grid; gap: 14px; font-size: 15px; color: rgba(255, 255, 255, .85); }
.inquiry-contact a { color: #9db4ff; text-decoration: none; }
.inquiry-contact a:hover { text-decoration: underline; }

.inquiry-form {
  background: var(--white);
  color: var(--navy);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, .25);
  display: grid;
  gap: 18px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { display: grid; gap: 7px; }
.form-group label { font-weight: 600; font-size: 14px; }
.form-group label em { color: var(--blue); font-style: normal; }
.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font);
  font-size: 15px;
  padding: 12px 14px;
  border: 1.5px solid var(--gray-300);
  border-radius: 10px;
  background: var(--white);
  color: var(--navy);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  width: 100%;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(31, 81, 255, .15);
}
.form-group input.invalid,
.form-group textarea.invalid { border-color: #e0453a; }
.form-group textarea { resize: vertical; }
.hp-field { position: absolute; left: -9999px; height: 0; width: 0; opacity: 0; }

.form-msg { font-size: 14px; font-weight: 600; text-align: center; min-height: 20px; margin: 0; }
.form-msg.success { color: #0d8a4f; }
.form-msg.error { color: #e0453a; }

/* ---------- Footer ---------- */
.footer { background: #06192b; color: rgba(255, 255, 255, .8); }
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding: 60px 0 40px;
}
.logo-footer { margin-bottom: 14px; }
.footer-col p { font-size: 14px; color: rgba(255, 255, 255, .6); max-width: 300px; }
.footer-col h4 { color: var(--white); font-size: 15px; margin-bottom: 16px; }
.footer-col a, .footer-col span {
  display: block;
  color: rgba(255, 255, 255, .65);
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 10px;
}
.footer-col a:hover { color: var(--white); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); padding: 18px 0; }
.footer-bottom p { font-size: 13px; color: rgba(255, 255, 255, .45); text-align: center; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-inner, .about-inner, .inquiry-inner { grid-template-columns: 1fr; }
  .hero { padding: 140px 0 70px; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .hero-card-alt { transform: none; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .nav {
    position: fixed;
    top: 70px; left: 0; right: 0;
    background: var(--navy);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    display: none;
    border-top: 1px solid rgba(255,255,255,.1);
  }
  .nav.open { display: flex; }
  .menu-toggle { display: flex; }
}
@media (max-width: 600px) {
  .grid-3 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .inquiry-form { padding: 24px; }
}