/* ============================================
   DIGIADS — Hi-fi Variant B (Growth-Forward)
   Brand: Electric Blue + Deep Navy + Authority Silver
   Type: Playfair Display / Inter / JetBrains Mono
   ============================================ */

:root {
  /* Brand colors */
  --c-white: #FFFFFF;
  --c-snow: #F5F5F7;
  --c-silver: #C7C8D6;
  --c-electric: #0066FF;
  --c-cyan: #00D4FF;
  --c-navy: #0B1220;
  --c-navy-2: #0F1A30;
  --c-success: #00DB84;
  --c-ink: #0B1220;
  --c-ink-soft: #4A5468;
  --c-ink-mute: #8A92A6;
  --c-line: #E5E7EE;
  --c-line-soft: #EEF0F5;

  /* Type */
  --f-display: "Playfair Display", "Times New Roman", serif;
  --f-body: "Inter", system-ui, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, monospace;

  /* Effects */
  --grad-power: linear-gradient(90deg, #00D4FF 0%, #0066FF 60%, #0B1220 100%);
  --grad-electric: linear-gradient(135deg, #00D4FF 0%, #0066FF 100%);
  --shadow-card: 0 1px 0 rgba(11,18,32,0.04), 0 24px 48px -24px rgba(11,18,32,0.18);
  --shadow-deep: 0 30px 80px -30px rgba(0,102,255,0.35);

  /* Radii */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;

  --max-w: 1280px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--c-white); }
body {
  font-family: var(--f-body);
  color: var(--c-ink);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- Typography ---------- */
.display {
  font-family: var(--f-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.02;
  margin: 0;
}
.display-xl { font-size: clamp(48px, 6vw, 88px); }
.display-lg { font-size: clamp(40px, 4.4vw, 64px); }
.display-md { font-size: clamp(28px, 2.6vw, 40px); }
.display-sm { font-size: clamp(22px, 1.8vw, 28px); }
.italic-emphasis {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 500;
  color: var(--c-electric);
}
.eyebrow {
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-electric);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow-num {
  font-family: var(--f-mono);
  font-size: 11px;
  border: 1px solid var(--c-electric);
  color: var(--c-electric);
  padding: 2px 7px;
  border-radius: 4px;
  letter-spacing: 0.04em;
}
.mono { font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.04em; color: var(--c-ink-soft); }
.lead { font-size: 17px; line-height: 1.55; color: var(--c-ink-soft); }

/* ---------- Layout ---------- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
}
section { padding: 96px 0; position: relative; }
.section-tight { padding: 56px 0; }
.section-dark { background: var(--c-navy); color: var(--c-white); }
.section-snow { background: var(--c-snow); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--c-line);
}
.site-header .row {
  max-width: var(--max-w); margin: 0 auto; padding: 16px 32px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.site-header img { height: 26px; }
.site-nav { display: flex; gap: 28px; }
.site-nav a {
  color: var(--c-ink); text-decoration: none; font-size: 14px; font-weight: 500;
  display: inline-flex; align-items: center; gap: 6px;
}
.site-nav a:hover { color: var(--c-electric); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 22px; border-radius: 999px;
  font-family: var(--f-body); font-weight: 600; font-size: 14px;
  border: 1.5px solid var(--c-ink); background: var(--c-white); color: var(--c-ink);
  cursor: pointer; text-decoration: none; transition: transform .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--c-electric); color: #fff; border-color: var(--c-electric); box-shadow: 0 8px 24px -8px rgba(0,102,255,0.6); }
.btn-primary:hover { background: #0052cc; }
.btn-ghost { background: transparent; }
.btn-on-dark { background: transparent; color: #fff; border-color: rgba(255,255,255,0.4); }
.btn-on-dark:hover { background: rgba(255,255,255,0.08); }

/* ---------- Cards ---------- */
.card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-3px); border-color: var(--c-electric); }
.card-tight { padding: 22px; }

/* Tile cards (dashboard module style) */
.tile {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  padding: 18px;
}
.tile-dark {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--r-md);
  padding: 18px;
  color: #fff;
}

/* Tags */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 11px; border-radius: 999px;
  font-family: var(--f-body); font-size: 11px; font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid var(--c-line); background: #fff; color: var(--c-ink-soft);
}
.chip-blue { background: rgba(0,102,255,0.08); border-color: rgba(0,102,255,0.25); color: var(--c-electric); }
.chip-green { background: rgba(0,219,132,0.1); border-color: rgba(0,219,132,0.3); color: #00904f; }
.chip-dark { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.18); color: #fff; }

/* Metric tile */
.metric { padding: 14px 16px; border: 1px solid var(--c-line); border-radius: 10px; background: #fff; }
.metric .k { font-family: var(--f-mono); font-size: 10px; color: var(--c-ink-mute); letter-spacing: 0.08em; text-transform: uppercase; }
.metric .v { font-family: var(--f-display); font-size: 28px; font-weight: 700; line-height: 1.1; margin-top: 4px; }
.metric .v-blue { color: var(--c-electric); }
.metric .v-green { color: #00904f; }
.metric .d { font-size: 11px; font-weight: 600; margin-top: 2px; color: var(--c-success); }
.metric.dark { background: rgba(255,255,255,0.05); border-color: rgba(255,255,255,0.12); }
.metric.dark .k { color: rgba(255,255,255,0.6); }
.metric.dark .v { color: #fff; }

/* Stat */
.stat .v { font-family: var(--f-display); font-size: 56px; line-height: 1; font-weight: 700; }
.stat .v-blue { color: var(--c-electric); }
.stat .l { font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--c-ink-mute); margin-top: 8px; }

/* Grids */
.grid { display: grid; gap: 20px; }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); }
.g-5 { grid-template-columns: repeat(5, 1fr); }
.g-split { grid-template-columns: 1.05fr 0.95fr; align-items: center; }
.g-side { grid-template-columns: 320px 1fr; }
.g-12 { grid-template-columns: repeat(12, 1fr); }

/* utility */
.hstack { display: flex; align-items: center; gap: 12px; }
.vstack { display: flex; flex-direction: column; gap: 12px; }
.flex-wrap { display: flex; flex-wrap: wrap; gap: 8px; }
.center { text-align: center; }
.muted { color: var(--c-ink-soft); }

/* dotted divider */
.swiss-rule {
  height: 1px; background: var(--c-line);
  margin: 64px 0;
  position: relative;
}
.swiss-rule::before {
  content: ""; position: absolute; left: 0; top: -2px; width: 5px; height: 5px;
  background: var(--c-electric); border-radius: 50%;
}

/* gradient line */
.power-line {
  height: 2px; background: var(--grad-power);
  border-radius: 2px;
}

/* Section header pattern */
.s-head {
  display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: end;
  margin-bottom: 48px;
  padding-bottom: 24px; border-bottom: 1px solid var(--c-line);
}
.s-head .display { max-width: 800px; }
.section-dark .s-head { border-color: rgba(255,255,255,0.12); }

/* Service card */
.service-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  padding: 28px;
  overflow: hidden;
  transition: all .2s ease;
}
.service-card:hover { border-color: var(--c-electric); box-shadow: var(--shadow-card); transform: translateY(-3px); }
.service-card .num {
  font-family: var(--f-display); font-size: 56px; line-height: 1;
  color: var(--c-snow); position: absolute; top: 18px; right: 22px; font-weight: 700;
}
.service-card:hover .num { color: rgba(0,102,255,0.15); }
.service-card.featured {
  background: linear-gradient(135deg, #0B1220 0%, #0F1A30 100%);
  color: #fff; border-color: transparent;
}
.service-card.featured .num { color: rgba(0,212,255,0.15); }

/* Process timeline */
.timeline-step {
  display: grid; grid-template-columns: 80px 1fr; gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--c-line);
  position: relative;
}
.timeline-step:last-child { border-bottom: 0; }
.timeline-step .dot {
  width: 40px; height: 40px; border-radius: 50%;
  background: #fff; border: 1.5px solid var(--c-ink);
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--f-display); font-weight: 700; font-size: 16px;
  position: relative; z-index: 1;
}
.timeline-step.active .dot { background: var(--c-electric); border-color: var(--c-electric); color: #fff; }
.timeline-rail {
  position: relative;
}
.timeline-rail::before {
  content: ""; position: absolute; left: 19px; top: 28px; bottom: 28px;
  width: 1.5px; background: var(--c-line); z-index: 0;
}

/* Phone style sticky nav */
.toc-sticky {
  position: sticky; top: 110px; align-self: start;
}

/* Logo wall */
.logo-cell {
  height: 60px; display: flex; align-items: center; justify-content: center;
  font-family: var(--f-mono); font-size: 12px; color: rgba(255,255,255,0.45);
  border: 1px dashed rgba(255,255,255,0.18);
  border-radius: 10px;
  letter-spacing: 0.1em;
}

/* footer */
.site-footer { background: var(--c-navy); color: #fff; padding: 80px 0 32px; }
.site-footer img { height: 28px; filter: brightness(0) invert(1); }

/* responsive */
@media (max-width: 900px) {
  .g-2, .g-3, .g-4, .g-5, .g-split, .g-side { grid-template-columns: 1fr; }
  section { padding: 64px 0; }
  .s-head { grid-template-columns: 1fr; }
  .site-nav { display: none; }
}

/* ── Additions for headless Astro build ── */

/* Fix: thêm display:grid vào các g-* class (CSS gốc chỉ có trên .grid) */
.g-2, .g-3, .g-4, .g-5 { display: grid; gap: 24px; }
.g-split { display: grid; gap: 48px; }
.g-side  { display: grid; gap: 40px; }

/* Alias .section → dùng padding của native <section> tag */
.section { padding: 96px 0; position: relative; }

/* Alias italic-emphasis dùng trong headings */
.italic-emphasis { font-style: italic; color: var(--c-electric, #0066FF); }

:root {
  --c-blue: #0066FF;
  --c-cyan: #00D4FF;
  --c-dark: #0B1220;
  --c-line: #E5E7EE;
  --c-muted: #8A92A6;
  --c-snow: #F5F5F7;
}

.wp-content {
  font-size: 16px;
  line-height: 1.75;
  color: #1a1a1a;
}

.wp-content h2 { font-size: 28px; font-weight: 700; margin: 2rem 0 1rem; }
.wp-content h3 { font-size: 22px; font-weight: 600; margin: 1.5rem 0 0.75rem; }
.wp-content p  { margin: 0 0 1.25rem; }
.wp-content ul, .wp-content ol { margin: 0 0 1.25rem; padding-left: 1.5rem; }
.wp-content li { margin-bottom: 0.4rem; }
.wp-content img { max-width: 100%; border-radius: 12px; margin: 1.5rem 0; }
.wp-content a  { color: var(--c-blue); text-decoration: underline; }
.wp-content blockquote {
  border-left: 3px solid var(--c-cyan);
  margin: 1.5rem 0;
  padding: 0.75rem 1.25rem;
  background: #F0F6FF;
  font-style: italic;
  border-radius: 0 8px 8px 0;
}

@media (max-width: 768px) {
  .g-split { grid-template-columns: 1fr !important; }
  .g-3     { grid-template-columns: 1fr !important; }
  .g-4     { grid-template-columns: 1fr 1fr !important; }
  .g-5     { grid-template-columns: 1fr 1fr !important; }
  .g-side  { grid-template-columns: 1fr !important; }
  .toc-sticky { position: static !important; }
  .container { padding: 0 20px; }
  .section  { padding: 64px 0; }
  .display-xl { font-size: clamp(38px, 10vw, 64px); }
  .display-lg { font-size: clamp(30px, 8vw, 48px); }
  /* Footer grid: stack on mobile */
  .site-footer > .container > div:first-child {
    grid-template-columns: 1fr !important;
  }
}

/* ── Smooth scroll ── */
html { scroll-behavior: smooth; }

/* ── Scroll-reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal-fast {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}

/* ── Blog card hover ── */
.blog-card {
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.blog-card:hover {
  box-shadow: 0 8px 32px rgba(0,102,255,0.12);
  transform: translateY(-3px);
}
.blog-card:hover img {
  transform: scale(1.04);
}

/* ── Focus-visible ring ── */
a:focus-visible, button:focus-visible {
  outline: 2px solid #0066FF;
  outline-offset: 3px;
  border-radius: 4px;
}

/* ── Selection color ── */
::selection { background: rgba(0,102,255,0.15); color: #0B1220; }

/* ── Print ── */
@media print {
  .site-header, .site-footer, #scroll-top { display: none !important; }
}