/*
Theme Name: CALLONG
Theme URI: http://47.88.33.37
Author: CALLONG
Description: Custom OEM/ODM factory theme for feature phone & smartphone manufacturer. Bilingual EN/ZH single-page landing.
Version: 1.0
License: GNU General Public License v2 or later
Text Domain: globalphone
*/

* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --blue: #0a5bd3;
  --blue-dark: #063e91;
  --ink: #1a2130;
  --gray: #5b6577;
  --light: #f4f7fb;
  --line: #e3e8f0;
}
body {
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.btn {
  display: inline-block;
  background: var(--blue);
  color: #fff;
  padding: 14px 32px;
  border-radius: 6px;
  font-weight: 600;
  letter-spacing: .3px;
  transition: background .2s, transform .2s;
}
.btn:hover { background: var(--blue-dark); transform: translateY(-2px); }
.btn-ghost {
  background: transparent;
  border: 2px solid #fff;
  padding: 12px 30px;
}
.btn-ghost:hover { background: #fff; color: var(--blue); }
section { padding: 80px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 54px; }
.section-head .tag {
  color: var(--blue);
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-size: 14px;
}
.section-head h2 { font-size: 36px; margin: 10px 0 14px; }
.section-head p { color: var(--gray); font-size: 17px; }

/* ---------- HEADER ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: #fff;
  border-bottom: 1px solid var(--line);
  box-shadow: 0 2px 12px rgba(10,40,90,.05);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 800; color: var(--ink); }
.logo .logo-text { color: var(--blue); letter-spacing: .5px; }
.logo .logo-img { height: 38px; width: auto; display: block; }
.logo .mark {
  width: 38px; height: 38px; border-radius: 8px;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  display: grid; place-items: center; color: #fff; font-size: 20px;
}
.nav nav ul { display: flex; gap: 32px; list-style: none; font-weight: 500; }
.nav nav ul a:hover { color: var(--blue); }
.nav .btn { padding: 10px 24px; }
.lang-btn {
  background: #fff; border: 1px solid var(--line); color: var(--ink);
  padding: 8px 16px; border-radius: 6px; font-weight: 600; cursor: pointer;
  font-family: inherit; font-size: 15px; margin-right: 16px; transition: border-color .2s, color .2s;
}
.lang-btn:hover { border-color: var(--blue); color: var(--blue); }
.nav-right { display: flex; align-items: center; }
.menu-toggle { display: none; font-size: 26px; background: none; border: none; cursor: pointer; }

/* ---------- HERO ---------- */
.hero {
  position: relative;
  background:
    linear-gradient(rgba(6,20,45,.78), rgba(6,20,45,.78)),
    var(--hero-img) center/cover no-repeat;
  color: #fff;
  padding: 130px 0;
  text-align: center;
}
.hero .tagline {
  display: inline-block;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  padding: 7px 18px; border-radius: 40px;
  font-size: 14px; letter-spacing: 1px; margin-bottom: 22px;
}
.hero h1 { font-size: 52px; line-height: 1.2; max-width: 900px; margin: 0 auto 20px; }
.hero h1 em { color: #6fb0ff; font-style: normal; }
.hero p { font-size: 19px; max-width: 640px; margin: 0 auto 34px; color: #d6e0f0; }
.hero .actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------- STATS ---------- */
.stats { background: var(--blue-dark); color: #fff; padding: 46px 0; }
.stats .grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stats .num { font-size: 42px; font-weight: 800; }
.stats .lbl { color: #b9d0f5; letter-spacing: .5px; font-size: 15px; }

/* ---------- PRODUCTS ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.prod-card {
  border: 1px solid var(--line); border-radius: 14px; overflow: hidden;
  transition: box-shadow .25s, transform .25s; background: #fff;
}
.prod-card:hover { box-shadow: 0 18px 40px rgba(10,40,90,.12); transform: translateY(-4px); }
.prod-card .thumb { height: 300px; background: var(--light) center/cover no-repeat; position: relative; }
.prod-card .thumb::after {
  content: attr(data-cat);
  position: absolute; top: 18px; left: 18px;
  background: var(--blue); color: #fff; font-size: 13px; font-weight: 600;
  padding: 6px 14px; border-radius: 30px;
}
.prod-card .body { padding: 26px 28px; }
.prod-card h3 { font-size: 23px; margin-bottom: 8px; }
.prod-card p { color: var(--gray); margin-bottom: 16px; }
.prod-card .link { color: var(--blue); font-weight: 600; }
.prod-card .link:hover { text-decoration: underline; }

/* ---------- WHY US ---------- */
.why { background: var(--light); }
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.why-card { background: #fff; border-radius: 14px; padding: 34px 26px; text-align: center; border: 1px solid var(--line); }
.why-card .ico {
  width: 66px; height: 66px; margin: 0 auto 18px; border-radius: 16px;
  background: linear-gradient(135deg, #e7f0ff, #d3e3ff);
  display: grid; place-items: center; font-size: 30px;
}
.why-card h3 { font-size: 19px; margin-bottom: 10px; }
.why-card p { color: var(--gray); font-size: 15px; }

/* ---------- CERTS ---------- */
.certs { text-align: center; }
.cert-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 22px; margin-top: 10px; }
.cert-badge {
  border: 1px solid var(--line); border-radius: 12px;
  padding: 22px 34px; min-width: 140px; background: #fff;
  font-weight: 800; font-size: 22px; color: var(--blue-dark); letter-spacing: 1px;
}
.cert-badge small { display: block; font-weight: 500; font-size: 12px; color: var(--gray); letter-spacing: .3px; margin-top: 4px; }

/* ---------- PROCESS ---------- */
.process { background: var(--ink); color: #fff; }
.process .section-head h2 { color: #fff; }
.process .section-head p { color: #aeb8c9; }
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.step { text-align: center; position: relative; }
.step .n {
  width: 58px; height: 58px; margin: 0 auto 14px; border-radius: 50%;
  background: var(--blue); display: grid; place-items: center; font-size: 22px; font-weight: 800;
}
.step h4 { font-size: 16px; margin-bottom: 4px; }
.step p { color: #aeb8c9; font-size: 13px; }

/* ---------- ABOUT ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; align-items: center; }
.about-img { border-radius: 16px; height: 420px; background: var(--light) center/cover no-repeat; box-shadow: 0 20px 50px rgba(10,40,90,.15); }
.about-txt h2 { font-size: 34px; margin-bottom: 18px; }
.about-txt p { color: var(--gray); margin-bottom: 16px; font-size: 16px; }
.about-txt ul { list-style: none; margin: 20px 0 28px; }
.about-txt li { padding: 8px 0 8px 30px; position: relative; }
.about-txt li::before { content: "\2714"; position: absolute; left: 0; color: var(--blue); font-weight: 800; }

/* ---------- CONTACT ---------- */
.contact { background: var(--light); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; }
.contact-info h3 { font-size: 26px; margin-bottom: 20px; }
.info-item { display: flex; gap: 14px; margin-bottom: 22px; }
.info-item .ico { font-size: 22px; color: var(--blue); }
.info-item strong { display: block; }
.info-item span { color: var(--gray); }
.contact form { background: #fff; padding: 34px; border-radius: 16px; border: 1px solid var(--line); }
.contact form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact form label { display: block; font-weight: 600; font-size: 14px; margin: 14px 0 6px; }
.contact form input, .contact form textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line);
  border-radius: 8px; font-size: 15px; font-family: inherit;
}
.contact form input:focus, .contact form textarea:focus { outline: none; border-color: var(--blue); }
.contact form button { margin-top: 22px; width: 100%; border: none; cursor: pointer; font-size: 16px; }

/* ---------- FOOTER ---------- */
.site-footer { background: #0a1020; color: #9aa6bb; padding: 60px 0 26px; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 40px; margin-bottom: 40px; }
.site-footer h4 { color: #fff; margin-bottom: 16px; font-size: 17px; }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 9px; }
.site-footer a:hover { color: #fff; }
.foot-logo { display: flex; align-items: center; gap: 10px; font-size: 21px; font-weight: 800; color: #fff; margin-bottom: 16px; }
.foot-logo .foot-logo-img { height: 34px; width: auto; display: block; filter: brightness(0) invert(1); }
.foot-bottom { border-top: 1px solid #1e2740; padding-top: 24px; text-align: center; font-size: 14px; }

/* ---------- PRODUCTS PAGE ---------- */
.page-hero {
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
  color: #fff; text-align: center; padding: 80px 0 70px;
}
.page-hero h1 { font-size: 42px; margin-bottom: 12px; }
.page-hero p { color: #d6e0f0; font-size: 18px; max-width: 640px; margin: 0 auto; }

.filter-bar { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-bottom: 46px; }
.filter-btn {
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  padding: 11px 26px; border-radius: 40px; font-weight: 600; font-size: 15px;
  cursor: pointer; font-family: inherit; transition: all .2s;
}
.filter-btn:hover { border-color: var(--blue); color: var(--blue); }
.filter-btn.active { background: var(--blue); border-color: var(--blue); color: #fff; }

.catalog { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.pcard {
  border: 1px solid var(--line); border-radius: 14px; overflow: hidden;
  background: #fff; transition: box-shadow .25s, transform .25s;
  display: flex; flex-direction: column; color: inherit; text-decoration: none;
}
.pcard:hover { box-shadow: 0 16px 36px rgba(10,40,90,.13); transform: translateY(-4px); }
.pcard h3 { color: var(--ink); }
.pcard .pic {
  height: 260px; background: #f7f9fc center/contain no-repeat; padding: 18px;
  display: flex; align-items: center; justify-content: center;
}
.pcard .pic img { max-height: 224px; width: auto; margin: 0 auto; }
.pcard .pinfo { padding: 18px 20px 22px; border-top: 1px solid var(--line); display: flex; flex-direction: column; flex: 1; }
.pcard .pcat {
  display: inline-block; align-self: flex-start; font-size: 12px; font-weight: 700; letter-spacing: .5px;
  color: var(--blue); background: #e7f0ff; padding: 3px 10px; border-radius: 20px; margin-bottom: 8px;
}
.pcard h3 { font-size: 19px; margin-bottom: 5px; }
.pcard p { color: var(--gray); font-size: 14px; margin-bottom: 16px; }
.inquiry-btn {
  margin-top: auto; align-self: flex-start;
  background: var(--blue); color: #fff; font-weight: 600; font-size: 14px;
  padding: 9px 22px; border-radius: 6px; transition: background .2s, transform .2s;
}
.inquiry-btn:hover { background: var(--blue-dark); transform: translateY(-2px); }

.inquiry-btn { cursor: pointer; }

.catalog-cta { text-align: center; margin-top: 52px; }
.catalog-cta p { color: var(--gray); margin-bottom: 18px; font-size: 17px; }

/* ---------- PRODUCT DETAIL PAGE ---------- */
.pd-wrap { padding: 40px 0 72px; }
.pd-back {
  display: inline-block; margin-bottom: 26px; color: var(--blue);
  font-weight: 600; font-size: 15px;
}
.pd-back:hover { color: var(--blue-dark); }
.pd-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 48px; align-items: start; }
.pd-media {
  background: #f7f9fc; border: 1px solid var(--line); border-radius: 16px;
  padding: 32px; display: flex; align-items: center; justify-content: center;
  position: sticky; top: 100px;
}
.pd-media img { max-width: 100%; max-height: 460px; width: auto; }
.pd-info .pcat {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .5px;
  color: var(--blue); background: #e7f0ff; padding: 4px 12px; border-radius: 20px; margin-bottom: 12px;
}
.pd-info h1 { font-size: 34px; margin-bottom: 12px; line-height: 1.2; }
.pd-tag { color: var(--gray); font-size: 17px; margin-bottom: 22px; }
.pd-inquiry { margin-bottom: 34px; }
.pd-spec-title {
  font-size: 20px; margin-bottom: 14px; padding-bottom: 10px;
  border-bottom: 2px solid var(--blue); display: inline-block;
}
.pd-specs { width: 100%; border-collapse: collapse; }
.pd-specs th, .pd-specs td {
  text-align: left; padding: 12px 16px; font-size: 15px; vertical-align: top;
  border-bottom: 1px solid var(--line);
}
.pd-specs th {
  width: 34%; color: var(--ink); font-weight: 600; background: #f7f9fc;
  white-space: nowrap;
}
.pd-specs td { color: var(--gray); }
.pd-specs tr:hover td, .pd-specs tr:hover th { background: #eef4ff; }

@media (max-width: 1024px) { .catalog { grid-template-columns: repeat(3, 1fr); } }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
  /* Mobile dropdown menu */
  .menu-toggle { display: block; order: 3; }
  .nav { position: relative; }
  .nav nav {
    position: absolute; top: 100%; left: 0; right: 0;
    background: #fff; border-top: 1px solid var(--line);
    box-shadow: 0 12px 24px rgba(10,40,90,.12);
    max-height: 0; overflow: hidden; transition: max-height .28s ease;
  }
  .site-header.nav-open .nav nav { max-height: 340px; }
  .nav nav ul {
    display: flex; flex-direction: column; gap: 0; padding: 8px 0;
  }
  .nav nav ul li { border-bottom: 1px solid var(--light); }
  .nav nav ul li:last-child { border-bottom: none; }
  .nav nav ul a { display: block; padding: 15px 24px; font-size: 16px; }

  .hero { padding: 90px 0; }
  .hero h1 { font-size: 34px; }
  .hero p { font-size: 17px; }
  .page-hero h1 { font-size: 32px; }
  .section-head h2 { font-size: 30px; }
  .stats .grid, .why-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid, .about-grid, .contact-grid, .foot-grid { grid-template-columns: 1fr; }
  .catalog { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .about-img { height: 300px; order: -1; }
  .pd-grid { grid-template-columns: 1fr; gap: 30px; }
  .pd-media { position: static; }
  .pd-info h1 { font-size: 28px; }
}

@media (max-width: 600px) {
  section { padding: 56px 0; }
  .wrap { padding: 0 18px; }
  .nav { height: 64px; }
  .logo .logo-img { height: 32px; }
  /* Free up the crowded header: quote button lives in the menu (Contact) */
  .nav-right .btn { display: none; }
  .lang-btn { margin-right: 10px; padding: 7px 13px; font-size: 14px; }

  .hero { padding: 70px 0; }
  .hero h1 { font-size: 28px; }
  .hero p { font-size: 16px; }
  .hero .actions { flex-direction: column; align-items: stretch; }
  .hero .actions .btn { text-align: center; }

  .section-head { margin-bottom: 38px; }
  .section-head h2 { font-size: 26px; }
  .section-head p { font-size: 16px; }

  .stats .grid { grid-template-columns: repeat(2, 1fr); gap: 28px 16px; }
  .stats .num { font-size: 34px; }

  /* Stack the name/email row in the contact form */
  .contact form .row { grid-template-columns: 1fr; gap: 0; }
  .contact form { padding: 24px; }

  .prod-card .thumb { height: 220px; }
  /* Keep the big catalog at 2 columns on phones; tighten cards to fit */
  .catalog { gap: 14px; }
  .pcard .pic { height: 150px; padding: 12px; }
  .pcard .pic img { max-height: 126px; }
  .pcard .pinfo { padding: 14px 14px 16px; }
  .pcard h3 { font-size: 16px; }
  .pcard p { font-size: 13px; margin-bottom: 12px; }
  .pcard .inquiry-btn { padding: 8px 16px; font-size: 13px; }

  .page-hero { padding: 56px 0 48px; }
  .page-hero h1 { font-size: 27px; }
  .filter-bar { gap: 8px; margin-bottom: 32px; }
  .filter-btn { padding: 9px 18px; font-size: 14px; }

  /* Spec table: let labels wrap instead of forcing horizontal scroll */
  .pd-specs th { white-space: normal; width: 42%; }
  .pd-specs th, .pd-specs td { padding: 10px 12px; font-size: 14px; }
  .pd-info h1 { font-size: 24px; }

  .cert-badge { padding: 18px 24px; min-width: 120px; font-size: 19px; }
  .foot-grid { gap: 30px; text-align: left; }
}

@media (max-width: 420px) {
  /* Homepage featured cards have more copy — 1 column reads better.
     The full catalog stays at 2 columns to keep 156 products browsable. */
  .prod-grid { grid-template-columns: 1fr; }
}