/* ===========================================================
   PHÁT WEB STUDIO — DESIGN SYSTEM
   Bright / classic light theme for an advertising-focused
   freelance web studio.

   Palette
     --void        #FFFFFF  main canvas (was near-black)
     --navy        #F4F6FB  primary surface (was dark navy)
     --navy-soft   #EAEEF6  elevated surface
     --blue        #3D8BFF  electric blue (primary accent)
     --blue-glow   #2766CC  bright accent / highlights (darkened for contrast on light bg)
     --gold        #B8893F  certification / trust accent (sparingly, darkened for light bg)
     --ink         #10172A  primary text on light
     --mist        #545F7D  secondary / muted text

   Type
     Display : 'Space Grotesk' — headlines, signature
     Body    : 'Inter'         — paragraphs, UI
     Mono    : 'JetBrains Mono' — eyebrows, labels, data
   =========================================================== */

:root {
  --void: #ffffff;
  --navy: #f4f6fb;
  --navy-soft: #eaeef6;
  --navy-soft-2: #e1e7f2;
  --blue: #3d8bff;
  --blue-glow: #2766cc;
  --blue-dim: rgba(61, 139, 255, 0.12);
  --gold: #b8893f;
  --ink: #10172a;
  --mist: #545f7d;
  --mist-dim: #7b86a3;
  --line: rgba(16, 23, 42, 0.09);
  --line-strong: rgba(16, 23, 42, 0.16);
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-bg-soft: rgba(255, 255, 255, 0.55);
  --glass-border: rgba(16, 23, 42, 0.08);
  --shadow-deep: 0 30px 80px -30px rgba(16, 23, 42, 0.22);
  --shadow-soft: 0 16px 40px -20px rgba(16, 23, 42, 0.16);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --container: 1240px;
  --nav-h: 84px;
}

/* ---------------- Reset ---------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}
body, h1, h2, h3, h4, p, figure, blockquote { margin: 0; }
ul { list-style: none; margin: 0; padding: 0; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }

body {
  background: var(--void);
  color: var(--ink);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--blue); color: var(--void); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--blue);
  color: var(--void);
  padding: 10px 16px;
  z-index: 999;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

:focus-visible {
  outline: 2px solid var(--blue-glow);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------------- Typography ---------------- */
h1, h2, h3, h4 {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.12;
  color: var(--ink);
}
.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-glow);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--blue);
}
.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-title { font-size: clamp(28px, 4vw, 44px); margin-top: 14px; }
.section-sub { color: var(--mist); margin-top: 16px; font-size: 17px; max-width: 56ch; }
.section-head.center .section-sub { margin-left: auto; margin-right: auto; }

.text-gradient {
  background: linear-gradient(100deg, var(--ink) 20%, var(--blue-glow) 55%, var(--blue) 80%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------------- Layout helpers ---------------- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 110px 0; position: relative; }
.section-tight { padding: 80px 0; }
.surface-navy { background: var(--navy); }
.surface-void { background: var(--void); }
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
  border: none;
}

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 15px;
  white-space: nowrap;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), background 0.25s ease, border-color 0.25s ease;
}
.btn .icon { width: 18px; height: 18px; flex-shrink: 0; }
.btn-primary {
  background: linear-gradient(135deg, var(--blue), #2a6fe0);
  color: #fff;
  box-shadow: 0 12px 30px -10px rgba(61, 139, 255, 0.55);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 40px -10px rgba(61, 139, 255, 0.7); }
.btn-ghost {
  background: var(--glass-bg-soft);
  border: 1px solid var(--glass-border);
  color: var(--ink);
  backdrop-filter: blur(12px);
}
.btn-ghost:hover { border-color: var(--blue); background: var(--blue-dim); }
.btn-outline {
  border: 1px solid var(--line-strong);
  color: var(--ink);
}
.btn-outline:hover { border-color: var(--blue); color: var(--blue-glow); }
.btn-lg { padding: 17px 32px; font-size: 16px; }
.btn-block { width: 100%; }

/* ---------------- Trust chips / badges ---------------- */
.trust-chip {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--mist);
  background: var(--glass-bg-soft);
  border: 1px solid var(--glass-border);
  padding: 7px 13px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

/* ===========================================================
   NAVIGATION
   =========================================================== */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(0px);
  transition: background 0.4s ease, backdrop-filter 0.4s ease, border-color 0.4s ease, height 0.4s ease;
  border-bottom: 1px solid transparent;
}
.site-nav.is-scrolled {
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
  height: 72px;
}
.nav-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo { display: inline-flex; align-items: center; gap: 10px; }
.nav-logo-mark {
  width: 30px; height: 30px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--blue), var(--gold));
  position: relative;
  flex-shrink: 0;
}
.nav-logo-mark::after {
  content: '';
  position: absolute; inset: 6px;
  border-radius: 5px;
  background: var(--void);
}
.nav-logo-text {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.01em;
}
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
  font-size: 14.5px;
  color: var(--mist);
  position: relative;
  padding: 6px 0;
  transition: color 0.25s ease;
}
.nav-links a::after {
  content: '';
  position: absolute; left: 0; right: 100%; bottom: 0;
  height: 1px; background: var(--blue-glow);
  transition: right 0.3s var(--ease);
}
.nav-links a:hover, .nav-links a.is-active { color: var(--ink); }
.nav-links a:hover::after, .nav-links a.is-active::after { right: 0; }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-phone span { font-family: 'JetBrains Mono', monospace; font-size: 13.5px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; width: 30px; }
.nav-toggle span { display: block; height: 2px; background: var(--ink); border-radius: 2px; transition: transform 0.3s var(--ease), opacity 0.3s ease; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  top: var(--nav-h); left: 0; right: 0;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  padding: 12px 24px 28px;
  gap: 4px;
  transform: translateY(-12px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: transform 0.35s var(--ease), opacity 0.35s ease, visibility 0.35s;
  z-index: 199;
}
.mobile-menu.is-open { transform: translateY(0); opacity: 1; visibility: visible; pointer-events: auto; }
.mobile-menu a { padding: 14px 6px; border-bottom: 1px solid var(--line); font-size: 16px; }
.mobile-menu .mobile-cta { border-bottom: none; margin-top: 14px; text-align: center; }

/* ---------------- Sticky mobile contact bar ---------------- */
.mobile-contact-bar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 190;
  display: none;
  grid-template-columns: repeat(3, 1fr);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom, 0);
}
.mcb-btn {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 10px 0 8px;
  font-size: 11.5px;
  color: var(--mist);
  border-right: 1px solid var(--line);
}
.mcb-btn:last-child { border-right: none; }
.mcb-btn svg { width: 21px; height: 21px; }
.mcb-call { color: var(--blue-glow); }
.mcb-zalo { color: #1f7fd1; }
.mcb-messenger { color: var(--gold); }

@media (max-width: 880px) {
  .nav-links, .nav-actions { display: none; }
  .nav-toggle { display: flex; }
  .mobile-contact-bar { display: grid; }
  body { padding-bottom: 64px; }
}

/* ===========================================================
   HERO
   =========================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-h);
  overflow: hidden;
  background:
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(61, 139, 255, 0.14), transparent 60%),
    radial-gradient(ellipse 50% 40% at 10% 90%, rgba(184, 137, 63, 0.08), transparent 60%),
    var(--void);
}
#heroCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}
.hero-fallback-orb {
  position: absolute;
  right: -10%;
  top: 50%;
  transform: translateY(-50%);
  width: 640px; height: 640px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, rgba(111, 168, 255, 0.35), rgba(61, 139, 255, 0.06) 55%, transparent 70%);
  filter: blur(2px);
  display: none;
  z-index: 1;
}
.hero-grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 30%, transparent 75%);
  opacity: 0.35;
  z-index: 1;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 64px 24px 80px;
}
.hero-content { max-width: 660px; }
.hero-title {
  font-size: clamp(38px, 6vw, 68px);
  margin-top: 22px;
  line-height: 1.06;
}
.hero-sub {
  margin-top: 26px;
  font-size: 18px;
  color: var(--mist);
  max-width: 52ch;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }
.hero-proof {
  margin-top: 56px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.hero-scroll-cue {
  position: absolute;
  bottom: 36px; left: 24px;
  display: flex; align-items: center; gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mist-dim);
  z-index: 2;
}
.hero-scroll-cue .line { width: 1px; height: 34px; background: linear-gradient(var(--blue-glow), transparent); }

@media (max-width: 880px) {
  .hero { min-height: 92vh; }
  .hero-inner { padding-top: 40px; padding-bottom: 56px; }
  .hero-fallback-orb { width: 420px; height: 420px; right: -30%; }
}

/* ===========================================================
   GLASS CARDS (shared component)
   =========================================================== */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-soft);
  transition: transform 0.4s var(--ease), border-color 0.4s ease, box-shadow 0.4s ease;
}
.glass-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-deep);
}

/* ===========================================================
   WHY CHOOSE ME
   =========================================================== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.why-card { padding: 30px 26px; }
.why-icon {
  width: 42px; height: 42px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--blue-dim);
  color: var(--blue-glow);
  margin-bottom: 20px;
}
.why-icon svg { width: 21px; height: 21px; }
.why-card h3 { font-size: 18px; margin-bottom: 10px; }
.why-card p { color: var(--mist); font-size: 14.5px; }

@media (max-width: 980px) { .why-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .why-grid { grid-template-columns: 1fr; } }

/* ===========================================================
   SERVICES
   =========================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.service-card {
  padding: 30px 26px;
  display: flex;
  flex-direction: column;
}
.service-card .why-icon { background: linear-gradient(135deg, var(--blue-dim), rgba(201, 169, 97, 0.12)); }
.service-card h3 { font-size: 19px; margin-bottom: 10px; }
.service-card p { color: var(--mist); font-size: 14.5px; flex-grow: 1; }
.service-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.service-tags span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--mist-dim);
  border: 1px solid var(--line);
  padding: 4px 9px;
  border-radius: var(--radius-pill);
}

@media (max-width: 1080px) { .services-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .services-grid { grid-template-columns: 1fr; } }

.services-cta {
  margin-top: 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  padding: 32px;
}

/* ===========================================================
   PORTFOLIO
   =========================================================== */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.portfolio-card { overflow: hidden; display: flex; flex-direction: column; }
.portfolio-media { position: relative; aspect-ratio: 16/10; overflow: hidden; }
.portfolio-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.portfolio-card:hover .portfolio-media img { transform: scale(1.05); }
.portfolio-type {
  position: absolute; top: 16px; left: 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  color: var(--blue-glow);
  padding: 6px 12px;
  border-radius: var(--radius-pill);
}
.portfolio-body { padding: 26px; flex-grow: 1; display: flex; flex-direction: column; }
.portfolio-body h3 { font-size: 20px; margin-bottom: 8px; }
.portfolio-body p { color: var(--mist); font-size: 14.5px; flex-grow: 1; }
.portfolio-metric {
  margin-top: 18px;
  display: flex; align-items: center; gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--gold);
}
.portfolio-link {
  margin-top: 18px;
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600;
  color: var(--ink);
}
.portfolio-link svg { width: 16px; height: 16px; transition: transform 0.3s var(--ease); }
.portfolio-card:hover .portfolio-link svg { transform: translateX(4px); }

@media (max-width: 880px) { .portfolio-grid { grid-template-columns: 1fr; } }

/* ===========================================================
   CERTIFICATES
   =========================================================== */
.cert-masonry {
  columns: 4 220px;
  column-gap: 18px;
}
.cert-item {
  break-inside: avoid;
  margin-bottom: 18px;
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  border: 1px solid var(--glass-border);
  cursor: zoom-in;
  background: var(--navy-soft);
}
.cert-item img { width: 100%; display: block; transition: transform 0.5s var(--ease), filter 0.5s ease; }
.cert-item:hover img { transform: scale(1.04); filter: brightness(1.05); }
.cert-item::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(5,7,12,0.85));
  opacity: 0;
  transition: opacity 0.35s ease;
}
.cert-item:hover::after { opacity: 1; }
.cert-label {
  position: absolute; bottom: 14px; left: 14px; right: 14px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: #f5f7fa;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.35s ease, transform 0.35s ease;
  z-index: 1;
}
.cert-item:hover .cert-label { opacity: 1; transform: translateY(0); }

@media (max-width: 980px) { .cert-masonry { columns: 3 180px; } }
@media (max-width: 620px) { .cert-masonry { columns: 2 140px; column-gap: 12px; } }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 300;
  background: rgba(5, 7, 12, 0.92);
  backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  padding: 40px;
  opacity: 0; visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s;
}
.lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox img { max-width: min(90vw, 800px); max-height: 84vh; border-radius: var(--radius-md); box-shadow: var(--shadow-deep); }
.lightbox-close {
  position: absolute; top: 28px; right: 28px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  display: flex; align-items: center; justify-content: center;
}
.lightbox-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  display: flex; align-items: center; justify-content: center;
}
.lightbox-prev { left: 24px; }
.lightbox-next { right: 24px; }

/* ===========================================================
   PROCESS
   =========================================================== */
.process-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.process-step {
  background: var(--navy);
  padding: 38px 28px;
  position: relative;
}
.process-n {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--blue-glow);
  letter-spacing: 0.08em;
}
.process-step h3 { font-size: 19px; margin: 18px 0 10px; }
.process-step p { color: var(--mist); font-size: 14px; }
.process-step:not(:last-child)::after {
  content: '';
  position: absolute; right: -1px; top: 38px; bottom: 38px; width: 1px;
  background: var(--line);
}

@media (max-width: 980px) { .process-list { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .process-list { grid-template-columns: 1fr; } }

/* ===========================================================
   TESTIMONIALS
   =========================================================== */
.testimonial-track {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.testimonial-card { padding: 32px 28px; }
.testimonial-stars { color: var(--gold); font-size: 14px; letter-spacing: 2px; margin-bottom: 18px; }
.testimonial-quote { font-size: 16px; line-height: 1.7; color: var(--ink); }
.testimonial-author { margin-top: 22px; display: flex; align-items: center; gap: 12px; }
.testimonial-avatar {
  width: 38px; height: 38px; border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--gold));
  display: flex; align-items: center; justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600; font-size: 14px; color: var(--void);
}
.testimonial-name { font-weight: 600; font-size: 14.5px; }
.testimonial-role { font-size: 13px; color: var(--mist); }

@media (max-width: 980px) { .testimonial-track { grid-template-columns: 1fr; } }

/* ===========================================================
   FAQ
   =========================================================== */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-question {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px;
  padding: 24px 4px;
  text-align: left;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 17px;
  font-weight: 500;
}
.faq-question .plus {
  flex-shrink: 0;
  width: 26px; height: 26px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  position: relative;
  transition: transform 0.35s var(--ease), border-color 0.3s ease;
}
.faq-question .plus::before, .faq-question .plus::after {
  content: '';
  position: absolute; top: 50%; left: 50%;
  background: var(--mist);
  transition: transform 0.3s ease, background 0.3s ease;
}
.faq-question .plus::before { width: 10px; height: 1.4px; transform: translate(-50%, -50%); }
.faq-question .plus::after { width: 1.4px; height: 10px; transform: translate(-50%, -50%); }
.faq-item.is-open .faq-question .plus { border-color: var(--blue); transform: rotate(180deg); }
.faq-item.is-open .faq-question .plus::after { transform: translate(-50%, -50%) rotate(90deg); opacity: 0; }
.faq-item.is-open .faq-question .plus::before { background: var(--blue-glow); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease);
}
.faq-answer p { padding: 0 4px 24px; color: var(--mist); font-size: 15px; max-width: 64ch; }

/* ===========================================================
   CONTACT SECTION (home) + CONTACT PAGE
   =========================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: stretch;
}
.contact-info { padding: 40px; display: flex; flex-direction: column; justify-content: space-between; }
.contact-method {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}
.contact-method:first-of-type { border-top: none; }
.contact-method-icon {
  width: 40px; height: 40px; border-radius: 11px;
  background: var(--blue-dim);
  color: var(--blue-glow);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.contact-method-icon svg { width: 19px; height: 19px; }
.contact-method-label { font-size: 12.5px; color: var(--mist); }
.contact-method-value { font-size: 15.5px; font-weight: 500; }

.contact-form-card { padding: 40px; }
.form-row { margin-bottom: 18px; }
.form-row label {
  display: block;
  font-size: 13px;
  color: var(--mist);
  margin-bottom: 8px;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.02em;
}
.form-row input, .form-row textarea, .form-row select {
  width: 100%;
  background: rgba(16, 23, 42, 0.03);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  font-size: 15px;
  transition: border-color 0.25s ease, background 0.25s ease;
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus {
  border-color: var(--blue);
  background: rgba(61, 139, 255, 0.06);
  outline: none;
}
.form-row textarea { resize: vertical; min-height: 120px; }
.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-honeypot { position: absolute; left: -9999px; opacity: 0; }
.form-note { font-size: 13px; color: var(--mist-dim); margin-top: 14px; text-align: center; }
.form-success, .form-error {
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  margin-bottom: 20px;
}
.form-success { background: rgba(61, 139, 255, 0.12); border: 1px solid var(--blue); color: var(--blue-glow); }
.form-error { background: rgba(255, 90, 90, 0.1); border: 1px solid rgba(255, 90, 90, 0.5); color: #ff8a8a; }

@media (max-width: 880px) {
  .contact-grid { grid-template-columns: 1fr; }
  .form-grid-2 { grid-template-columns: 1fr; }
}

/* ===========================================================
   CTA BAND
   =========================================================== */
.cta-band {
  padding: 80px;
  text-align: center;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(61, 139, 255, 0.14), rgba(201, 169, 97, 0.06));
  border: 1px solid var(--glass-border);
  position: relative;
  overflow: hidden;
}
.cta-band h2 { font-size: clamp(26px, 4vw, 38px); }
.cta-band p { color: var(--mist); margin-top: 14px; max-width: 50ch; margin-left: auto; margin-right: auto; }
.cta-band .hero-ctas { justify-content: center; margin-top: 30px; }

@media (max-width: 700px) { .cta-band { padding: 48px 28px; } }

/* ===========================================================
   PAGE HEADER (inner pages)
   =========================================================== */
.page-header {
  padding: calc(var(--nav-h) + 64px) 0 70px;
  background:
    radial-gradient(ellipse 50% 50% at 85% 0%, rgba(61, 139, 255, 0.16), transparent 60%),
    var(--void);
  border-bottom: 1px solid var(--line);
}
.page-header h1 { font-size: clamp(32px, 5vw, 52px); margin-top: 16px; max-width: 720px; }
.page-header p { color: var(--mist); margin-top: 18px; max-width: 56ch; font-size: 17px; }
.breadcrumb {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  color: var(--mist-dim);
  display: flex; gap: 8px; align-items: center;
  margin-top: 22px;
}
.breadcrumb a { color: var(--mist); }
.breadcrumb a:hover { color: var(--blue-glow); }

/* ===========================================================
   ABOUT PAGE SPECIFIC
   =========================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
  align-items: center;
}
.about-portrait {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/5;
  background: linear-gradient(160deg, var(--navy-soft), var(--navy));
  border: 1px solid var(--glass-border);
}
.about-portrait-glow {
  position: absolute; inset: -20%;
  background: radial-gradient(circle at 30% 20%, rgba(61, 139, 255, 0.3), transparent 60%);
}
.about-portrait .initials {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 96px; font-weight: 600;
  color: rgba(16, 23, 42, 0.08);
}
.about-points { display: grid; gap: 18px; margin-top: 28px; }
.about-point { display: flex; gap: 14px; align-items: flex-start; }
.about-point-mark {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--blue-dim); color: var(--blue-glow);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; margin-top: 2px;
}
.about-point-mark svg { width: 13px; height: 13px; }
.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 44px;
}
.about-stat { padding: 24px; }
.about-stat .num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 32px; font-weight: 600;
  color: var(--blue-glow);
}
.about-stat .label { font-size: 13px; color: var(--mist); margin-top: 6px; }

@media (max-width: 940px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-portrait { max-width: 360px; margin: 0 auto; }
}
@media (max-width: 560px) { .about-stats { grid-template-columns: 1fr; } }

/* ===========================================================
   SERVICES PAGE — pricing-style detail blocks
   =========================================================== */
.service-detail {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  padding: 56px 0;
  align-items: center;
}
.service-detail:not(:last-child) { border-bottom: 1px solid var(--line); }
.service-detail.reverse { grid-template-columns: 1.1fr 0.9fr; }
.service-detail.reverse .service-detail-visual { order: 2; }
.service-detail-visual {
  aspect-ratio: 4/3;
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, var(--navy-soft), var(--navy));
  border: 1px solid var(--glass-border);
  position: relative;
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.service-detail-visual svg { width: 88px; height: 88px; color: var(--blue); opacity: 0.85; }
.service-detail-list { display: grid; gap: 12px; margin-top: 22px; }
.service-detail-list li { display: flex; gap: 10px; align-items: flex-start; font-size: 14.5px; color: var(--mist); }
.service-detail-list svg { width: 16px; height: 16px; color: var(--blue-glow); margin-top: 3px; flex-shrink: 0; }

@media (max-width: 880px) {
  .service-detail, .service-detail.reverse { grid-template-columns: 1fr; }
  .service-detail.reverse .service-detail-visual { order: 0; }
}

/* ===========================================================
   PORTFOLIO PAGE — filters
   =========================================================== */
.portfolio-filters {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-bottom: 44px;
}
.filter-btn {
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-strong);
  font-size: 13.5px;
  color: var(--mist);
  transition: all 0.25s ease;
}
.filter-btn.is-active, .filter-btn:hover { border-color: var(--blue); color: var(--ink); background: var(--blue-dim); }

/* ===========================================================
   FOOTER
   =========================================================== */
.site-footer {
  position: relative;
  background: var(--navy);
  border-top: 1px solid var(--line);
  overflow: hidden;
  padding-top: 80px;
}
.footer-glow {
  position: absolute; top: -200px; left: 50%; transform: translateX(-50%);
  width: 600px; height: 400px;
  background: radial-gradient(ellipse, rgba(61, 139, 255, 0.18), transparent 70%);
  pointer-events: none;
}
.footer-inner { position: relative; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: 40px;
  padding-bottom: 56px;
}
.footer-tagline { color: var(--mist); font-size: 14.5px; margin-top: 16px; max-width: 32ch; }
.footer-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.footer-col h3 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mist-dim);
  margin-bottom: 18px;
  font-weight: 500;
}
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col a { color: var(--mist); font-size: 14.5px; transition: color 0.25s ease; }
.footer-col a:hover { color: var(--blue-glow); }
.footer-location { color: var(--mist-dim); font-size: 13.5px; }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 26px 0 calc(26px + env(safe-area-inset-bottom, 0));
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  font-size: 13px; color: var(--mist-dim);
}

@media (max-width: 880px) {
  .footer-top { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; }
}

/* ===========================================================
   SCROLL REVEAL utility (driven by GSAP / IO fallback in main.js)
   =========================================================== */
.reveal-up { opacity: 0; transform: translateY(28px); }
.reveal-up.is-visible { opacity: 1; transform: translateY(0); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }

/* ===========================================================
   RESPONSIVE: global container/section tightening
   =========================================================== */
@media (max-width: 880px) {
  .section { padding: 76px 0; }
  .section-head { margin-bottom: 40px; }
}