/*
Theme Name: ill.vn
Description: Theme riêng cho ill.vn (phần mềm quản lý xưởng in ấn) — viết tay, không dùng page builder, tối ưu tốc độ và bảo mật. Không phụ thuộc theme/plugin trả phí nào.
Author: ill.vn
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: illvn
*/

/* =========================================================
   TOKEN THIẾT KẾ — lấy từ logo ill.vn chính thức
   ========================================================= */
:root {
  --ill-green: #2bb673;
  --ill-green-dark: #1f8a58;
  --ill-green-tint: #e6f7ef;
  --ill-orange: #f7941d;
  --ill-orange-dark: #d97c0a;
  --ill-ink: #16202a;
  --ill-ink-soft: #46525d;
  --ill-gray-border: #e3e7ea;
  --ill-bg: #ffffff;
  --ill-bg-alt: #f7f9f8;
  --ill-white: #ffffff;
  --ill-radius: 12px;
  --ill-radius-sm: 8px;
  --ill-shadow: 0 4px 24px rgba(22, 32, 42, 0.07);
  --ill-shadow-sm: 0 2px 10px rgba(22, 32, 42, 0.06);
  --ill-font-display: 'Be Vietnam Pro', 'Segoe UI', system-ui, sans-serif;
  --ill-font-body: 'Be Vietnam Pro', 'Segoe UI', system-ui, sans-serif;
  --ill-container: 1160px;
}

/* =========================================================
   RESET TỐI THIỂU
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ill-bg);
  color: var(--ill-ink);
  font-family: var(--ill-font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3, h4 {
  font-family: var(--ill-font-display);
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 16px;
  text-wrap: balance;
  color: var(--ill-ink);
}
h1 { font-size: clamp(32px, 4.5vw, 52px); }
h2 { font-size: clamp(26px, 3.2vw, 36px); }
h3 { font-size: 20px; }
p { margin: 0 0 16px; color: var(--ill-ink-soft); }

.container {
  width: 100%;
  max-width: var(--ill-container);
  margin: 0 auto;
  padding: 0 20px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ill-green-dark);
  background: var(--ill-green-tint);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

/* Nút */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--ill-radius-sm);
  font-weight: 700;
  font-size: 15px;
  border: 2px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn-primary {
  background: var(--ill-green);
  color: #fff;
  box-shadow: var(--ill-shadow-sm);
}
.btn-primary:hover { background: var(--ill-green-dark); transform: translateY(-1px); }
.btn-accent {
  background: var(--ill-orange);
  color: #fff;
}
.btn-accent:hover { background: var(--ill-orange-dark); transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  border-color: var(--ill-gray-border);
  color: var(--ill-ink);
}
.btn-outline:hover { border-color: var(--ill-green); color: var(--ill-green-dark); }
.btn-lg { padding: 16px 32px; font-size: 16px; }

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--ill-gray-border);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 0;
}
.site-logo { display: flex; align-items: center; }
.site-logo img { height: 36px; width: auto; }
.site-logo-text { font-family: var(--ill-font-display); font-weight: 800; font-size: 22px; color: var(--ill-ink); }
.site-logo-text span { color: var(--ill-green); }

.main-nav { display: flex; align-items: center; gap: 4px; }
/* wp_nav_menu() (và fallback_cb) đều in ra <ul><li><a>...</a></li></ul> — .main-nav chỉ có đúng
   1 con trực tiếp là <ul> nên display:flex ở trên không tự làm các mục nằm ngang được; cần flex
   luôn cho <ul> và bỏ dấu chấm đầu dòng mặc định của <li>. */
.main-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.main-nav li { list-style: none; }
.main-nav a {
  padding: 10px 16px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  color: var(--ill-ink-soft);
}
.main-nav a:hover { background: var(--ill-bg-alt); color: var(--ill-ink); }
.header-cta { display: flex; align-items: center; gap: 10px; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ill-ink);
  margin: 5px 0;
  border-radius: 2px;
}

@media (max-width: 860px) {
  .main-nav { position: fixed; inset: 64px 0 0 0; background: #fff; flex-direction: column; align-items: stretch; padding: 16px 20px; gap: 4px; display: none; overflow-y: auto; }
  .main-nav.is-open { display: flex; }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 4px; width: 100%; }
  .main-nav a { padding: 14px 16px; font-size: 17px; }
  .nav-toggle { display: block; }
  .header-cta .btn-outline { display: none; }
}

/* =========================================================
   HERO
   ========================================================= */
.hero { padding: 72px 0 56px; }
.hero__grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
.hero__kpis { display: flex; gap: 28px; margin-top: 32px; flex-wrap: wrap; }
.hero__kpi-num { font-family: var(--ill-font-display); font-weight: 800; font-size: 28px; color: var(--ill-green-dark); }
.hero__kpi-label { font-size: 13px; color: var(--ill-ink-soft); }
.hero__cta { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.hero__art {
  background: linear-gradient(160deg, var(--ill-green-tint), #fff 70%);
  border: 1px solid var(--ill-gray-border);
  border-radius: var(--ill-radius);
  padding: 28px;
  box-shadow: var(--ill-shadow);
}
@media (max-width: 860px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero { padding: 40px 0 36px; }
}

/* =========================================================
   SECTION chung
   ========================================================= */
.section { padding: 64px 0; }
.section-alt { background: var(--ill-bg-alt); }
.section-head { max-width: 640px; margin: 0 0 40px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card {
  background: #fff;
  border: 1px solid var(--ill-gray-border);
  border-radius: var(--ill-radius);
  padding: 28px;
}
.card-feature .icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: var(--ill-green-tint);
  border-radius: var(--ill-radius-sm);
  font-size: 22px;
  margin-bottom: 16px;
}

/* Bảng giá */
.pricing-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; align-items: stretch; }
@media (max-width: 900px) { .pricing-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; } }
@media (max-width: 560px) { .pricing-grid { grid-template-columns: 1fr; } }
.price-card {
  background: #fff;
  border: 1px solid var(--ill-gray-border);
  border-radius: var(--ill-radius);
  padding: 22px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
@media (min-width: 901px) {
  .price-card h3 { font-size: 16px; }
  .price-card .amount { font-size: 24px; }
  .price-card .amount small { font-size: 12px; }
  .price-card p { font-size: 12.5px; }
  .price-card li { font-size: 12.5px; }
}
.price-card.featured {
  border-color: var(--ill-green);
  box-shadow: var(--ill-shadow);
  position: relative;
}
.price-card.featured::before {
  content: "Phổ biến nhất";
  position: absolute; top: -13px; left: 16px;
  background: var(--ill-orange); color: #fff;
  font-size: 12px; font-weight: 700;
  padding: 4px 12px; border-radius: 999px;
}
.price-card .amount { font-family: var(--ill-font-display); font-size: 34px; font-weight: 800; }
.price-card .amount small { font-size: 14px; font-weight: 500; color: var(--ill-ink-soft); }
.price-card .price-sub { min-height: 18px; font-size: 12.5px; font-weight: 600; color: var(--ill-green-dark); }
.price-card ul { display: flex; flex-direction: column; gap: 10px; margin: 8px 0; }
.price-card li { display: flex; gap: 10px; font-size: 14.5px; color: var(--ill-ink-soft); align-items: flex-start; }
.price-card li::before { content: "✓"; color: var(--ill-green); font-weight: 800; }
.price-note {
  background: #fff8ec; border: 1px dashed var(--ill-orange);
  border-radius: var(--ill-radius-sm); padding: 14px 18px;
  font-size: 13.5px; color: var(--ill-ink-soft); margin-top: 24px;
}

/* Bộ chọn thời hạn đăng ký */
.duration-toggle { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin: 0 0 32px; }
.dur-btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: #fff; border: 1px solid var(--ill-gray-border); border-radius: 999px;
  padding: 9px 16px; font-size: 14px; font-weight: 600; color: var(--ill-ink-soft);
  cursor: pointer; transition: border-color .15s ease, background .15s ease, color .15s ease;
}
.dur-btn:hover { border-color: var(--ill-green); color: var(--ill-ink); }
.dur-btn.active { background: var(--ill-green); border-color: var(--ill-green); color: #fff; }
.dur-btn .dur-badge { font-size: 11.5px; font-weight: 700; color: var(--ill-orange-dark); background: #fff3e2; padding: 2px 7px; border-radius: 999px; }
.dur-btn.active .dur-badge { background: rgba(255,255,255,.22); color: #fff; }

/* Case study / đánh giá */
.testi-card { background: #fff; border: 1px solid var(--ill-gray-border); border-radius: var(--ill-radius); padding: 26px; }
.testi-card .name { font-weight: 700; margin-top: 12px; }
.testi-card .role { font-size: 13px; color: var(--ill-ink-soft); }
.testi-placeholder {
  border: 1.5px dashed var(--ill-orange);
  background: #fff8ec;
  border-radius: var(--ill-radius);
  padding: 22px;
  font-size: 14px;
  color: var(--ill-ink-soft);
}

/* Form liên hệ */
.contact-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
@media (max-width: 860px) { .contact-wrap { grid-template-columns: 1fr; } }
.form-box { background: #fff; border: 1px solid var(--ill-gray-border); border-radius: var(--ill-radius); padding: 32px; box-shadow: var(--ill-shadow-sm); }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.field input, .field textarea, .field select {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--ill-gray-border);
  border-radius: var(--ill-radius-sm);
  font-size: 15px;
  font-family: inherit;
  background: #fff;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--ill-green);
  box-shadow: 0 0 0 3px var(--ill-green-tint);
}
.hp-field { position: absolute !important; left: -9999px !important; top: -9999px !important; }
.form-note { font-size: 13px; color: var(--ill-ink-soft); margin-top: 10px; }
.form-alert { border-radius: var(--ill-radius-sm); padding: 14px 16px; font-size: 14.5px; margin-bottom: 20px; }
.form-alert.success { background: var(--ill-green-tint); color: var(--ill-green-dark); border: 1px solid var(--ill-green); }
.form-alert.error { background: #fdecec; color: #b42318; border: 1px solid #f3a9a4; }

/* Zalo nổi */
.zalo-float {
  position: fixed; right: 20px; bottom: 20px; z-index: 60;
  width: 56px; height: 56px; border-radius: 50%;
  background: #0068ff; color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 20px rgba(0,104,255,0.35);
  font-weight: 800; font-size: 13px;
}
.zalo-float:hover { filter: brightness(1.05); }

/* Blog */
.post-card { border: 1px solid var(--ill-gray-border); border-radius: var(--ill-radius); overflow: hidden; background: #fff; }
.post-card__thumb { aspect-ratio: 16/10; background: var(--ill-bg-alt); overflow: hidden; }
.post-card__thumb img { width: 100%; height: 100%; object-fit: cover; }
.post-card__body { padding: 20px; }
.post-card__meta { font-size: 12.5px; color: var(--ill-ink-soft); margin-bottom: 8px; }
.single-content { max-width: 760px; margin: 0 auto; }
.single-content img { border-radius: var(--ill-radius-sm); }

/* Footer */
.site-footer { background: var(--ill-ink); color: #cfd6db; padding: 56px 0 28px; margin-top: 64px; }
.site-footer a { color: #cfd6db; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.1fr 0.8fr 0.8fr 1.3fr; gap: 32px; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid h4 { color: #fff; font-size: 14px; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 14px; }
.footer-grid li { margin-bottom: 10px; font-size: 14px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); margin-top: 40px; padding-top: 20px; font-size: 13px; color: #90999f; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* Utility */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.skip-link {
  position: absolute; left: -9999px; top: 0; background: #fff; padding: 10px 16px; z-index: 100;
}
.skip-link:focus { left: 10px; top: 10px; }