/* ============================================================
   Xưởng in MK — Đồng phục thể thao
   Design system  (Raksul-inspired bright blue, clean B2B)
   ============================================================ */

:root {
  /* Brand */
  --blue:        #0091E6;   /* primary bright cyan-blue */
  --blue-600:    #0072CC;
  --blue-700:    #005CAB;
  --sky:         #E8F5FE;   /* light tint backgrounds */
  --sky-2:       #F2F9FE;
  --accent:      #FF6A3D;   /* warm coral — used sparingly for energy */
  --accent-soft: #FFEDE6;
  --green:       #16A572;   /* quality / success */
  --green-soft:  #E4F6EF;

  /* Neutrals */
  --ink:    #0B1B2B;        /* near-black navy text */
  --ink-2:  #35506A;        /* secondary text */
  --muted:  #6A7E91;        /* tertiary / captions */
  --line:   #E2EAF1;        /* borders */
  --line-2: #EDF2F7;
  --bg:     #FFFFFF;
  --bg-2:   #F5F8FB;        /* page section gray */
  --bg-3:   #EEF3F8;

  /* Radii */
  --r-sm: 10px;
  --r:    16px;
  --r-lg: 24px;
  --r-pill: 999px;

  /* Shadow */
  --sh-sm: 0 1px 2px rgba(11,27,43,.06), 0 1px 3px rgba(11,27,43,.04);
  --sh:    0 4px 16px rgba(11,27,43,.07), 0 1px 4px rgba(11,27,43,.04);
  --sh-lg: 0 18px 48px rgba(11,27,43,.12), 0 4px 12px rgba(11,27,43,.06);
  --sh-blue: 0 10px 26px rgba(0,114,204,.28);

  --maxw: 1200px;
  --nav-h: 72px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Be Vietnam Pro", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { margin: 0; line-height: 1.12; letter-spacing: -.02em; font-weight: 800; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-weight: 700; font-size: 15.5px;
  padding: 14px 26px; border-radius: var(--r-pill);
  border: 1.5px solid transparent; transition: .18s ease;
  white-space: nowrap; line-height: 1;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--blue); color: #fff; box-shadow: var(--sh-blue); }
.btn-primary:hover { background: var(--blue-600); transform: translateY(-2px); }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue-600); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 10px 26px rgba(255,106,61,.32); }
.btn-accent:hover { filter: brightness(.96); transform: translateY(-2px); }
.btn-lg { padding: 17px 34px; font-size: 17px; }
.btn-block { width: 100%; justify-content: center; }

/* ---------- Tags / chips ---------- */
.tag {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 13px; font-weight: 700; letter-spacing: .01em;
  padding: 7px 13px; border-radius: var(--r-pill);
  background: var(--sky); color: var(--blue-700);
}
.tag.accent { background: var(--accent-soft); color: #C0421E; }
.tag.green  { background: var(--green-soft); color: #0E7A53; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 13.5px; font-weight: 800; letter-spacing: .08em;
  text-transform: uppercase; color: var(--blue-600);
}
.eyebrow::before { content: ""; width: 22px; height: 2.5px; background: var(--blue); border-radius: 2px; }

/* ---------- Navigation ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.86); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-2);
}
.nav-inner { height: var(--nav-h); display: flex; align-items: center; gap: 30px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 800; font-size: 21px; letter-spacing: -.03em; white-space: nowrap; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 11px;
  background: linear-gradient(135deg, var(--blue) 0%, #00B4F0 100%);
  display: grid; place-items: center; color: #fff; flex: none;
  box-shadow: 0 6px 14px rgba(0,145,230,.34);
}
.brand-mark svg { width: 21px; height: 21px; }
.brand b { color: var(--blue); }
.nav-links { display: flex; gap: 30px; margin-left: 14px; }
.nav-links a { font-size: 15px; font-weight: 600; color: var(--ink-2); transition: .15s; }
.nav-links a:hover, .nav-links a.active { color: var(--blue-600); }
.nav-cta { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.nav-phone { font-weight: 700; font-size: 15px; color: var(--ink); display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.nav-phone svg { width: 17px; height: 17px; color: var(--blue); }
.nav-burger { display: none; background: none; border: none; padding: 6px; color: var(--ink); }

/* ---------- Image placeholders ---------- */
.ph {
  position: relative; overflow: hidden;
  background-color: var(--bg-3);
  background-image: repeating-linear-gradient(
    -45deg, rgba(0,114,204,.05) 0 11px, rgba(0,114,204,.0) 11px 22px);
  display: grid; place-items: center;
  color: var(--blue-700);
}
.ph::after {
  content: attr(data-label);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12px; letter-spacing: .04em; font-weight: 600;
  color: #5E7B96; background: rgba(255,255,255,.78);
  padding: 6px 12px; border-radius: var(--r-pill);
  border: 1px solid rgba(0,114,204,.14);
  text-align: center; max-width: 80%;
}
.ph.dark {
  background-color: #0F2336;
  background-image: repeating-linear-gradient(-45deg, rgba(255,255,255,.045) 0 11px, transparent 11px 22px);
}
.ph.dark::after { color: #Bcd; background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.16); color: #CFE2F2; }

/* ---------- Section scaffold ---------- */
section { position: relative; }
.sec { padding: 92px 0; }
.sec-head { max-width: 680px; margin-bottom: 48px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head h2 { font-size: clamp(30px, 4vw, 44px); margin: 16px 0 14px; }
.sec-head p { font-size: 18px; color: var(--ink-2); }

/* ---------- Cards ---------- */
.card {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--r); box-shadow: var(--sh-sm);
  transition: .2s ease;
}

/* ---------- Footer ---------- */
.footer { background: #0B1B2B; color: #AebfcF; padding: 64px 0 36px; }
.footer a { color: #AEC3D6; }
.footer a:hover { color: #fff; }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 18px; letter-spacing: 0; }
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 11px; font-size: 14.5px; }
.foot-brand .brand { color: #fff; margin-bottom: 16px; }
.foot-brand p { font-size: 14.5px; line-height: 1.7; max-width: 280px; }
.foot-bottom {
  border-top: 1px solid rgba(255,255,255,.1); margin-top: 48px; padding-top: 24px;
  display: flex; justify-content: space-between; gap: 16px; font-size: 13.5px; color: #7E94A8; flex-wrap: wrap;
}

/* ---------- Utilities ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .nav-links, .nav-phone { display: none; }
  .nav-burger { display: block; }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .sec { padding: 64px 0; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  .foot-grid { grid-template-columns: 1fr; }
}