/* =====================================================
   CAO HOÀNG ĐIỆN LẠNH – STYLE.CSS  (Modern Minimal)
===================================================== */

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── TOKENS ── */
:root {
  --blue:      #2563eb;
  --blue-lt:   #3b82f6;
  --cyan:      #06b6d4;
  --bg:        #f8fafc;
  --bg-white:  #ffffff;
  --text:      #0f172a;
  --text-2:    #475569;
  --text-3:    #94a3b8;
  --border:    #e2e8f0;
  --radius:    12px;
  --nav-h:     68px;
  --shadow:    0 1px 3px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.1);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Be Vietnam Pro', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── UTILITIES ── */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.gradient-text {
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: inherit;
  font-size: .9rem;
  font-weight: 600;
  border-radius: 8px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all .2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--blue);
  color: #fff;
}
.btn-primary:hover { background: #1d4ed8; transform: translateY(-1px); box-shadow: 0 4px 14px rgba(37,99,235,.35); }

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { border-color: var(--blue); color: var(--blue); }

/* ── HEADER ── */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(248,250,252,.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  z-index: 900;
  transition: box-shadow .3s;
}

.header.scrolled { box-shadow: var(--shadow-lg); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-icon { width: 38px; height: 38px; }

.logo-text { display: flex; flex-direction: column; line-height: 1.15; }

.logo-name {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -.02em;
}

.logo-sub {
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--blue);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}

.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-2);
  text-decoration: none;
  border-radius: 6px;
  transition: color .2s, background .2s;
}
.nav-link:hover { color: var(--text); background: rgba(0,0,0,.04); }

.nav-cta {
  margin-left: 8px;
  padding: 9px 20px;
  background: var(--blue);
  color: #fff;
  font-size: .875rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 8px;
  transition: background .2s, transform .2s;
}
.nav-cta:hover { background: #1d4ed8; transform: translateY(-1px); }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ════════════════════════════════════════════
   HERO – DARK FULL-BLEED REDESIGN
════════════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-h);
  position: relative;
  overflow: hidden;
  background: #0b1120;
}

/* Real photo background */
.hero-bg-img {
  display: block !important;
  position: absolute;
  inset: 0;
  background: url('images/hero.jpg') center center / cover no-repeat;
  filter: brightness(.32) saturate(1.2);
  transform: scale(1.05);
  animation: hero-zoom 22s ease-in-out infinite alternate;
}
@keyframes hero-zoom {
  from { transform: scale(1.05); }
  to   { transform: scale(1.13); }
}

/* Colour overlay */
.hero-overlay {
  display: block !important;
  position: absolute;
  inset: 0;
  background:
    linear-gradient(110deg,
      rgba(7,15,36,.94) 0%,
      rgba(15,30,70,.80) 45%,
      rgba(37,99,235,.18) 100%),
    radial-gradient(ellipse 80% 60% at 72% 50%, rgba(6,182,212,.10) 0%, transparent 70%);
}

/* Grid lines */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 1;
  pointer-events: none;
}

/* Glow orbs */
.hero-particles { position: absolute; inset: 0; z-index: 1; pointer-events: none; overflow: hidden; }
.hp {
  position: absolute;
  left: var(--x); top: var(--y);
  width: var(--s); height: var(--s);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,.28) 0%, transparent 70%);
  animation: orb-pulse var(--d) ease-in-out infinite alternate;
  filter: blur(8px);
}
@keyframes orb-pulse {
  from { opacity: .35; transform: scale(1); }
  to   { opacity: 1;   transform: scale(1.35); }
}

/* hide old elements */
.hero-particle, .snowflake, .hero-bg, .hero-ac-visual { display: none !important; }

/* 2-column grid inner layout */
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 460px;
  gap: 56px;
  align-items: center;
  padding: 96px 0 80px;
  width: 100%;
}

.hero-content {
  position: relative;
  display: flex;
  flex-direction: column;
}

/* Live dot badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  background: rgba(6,182,212,.10);
  border: 1px solid rgba(6,182,212,.28);
  border-radius: 50px;
  font-size: .8rem;
  font-weight: 600;
  color: #67e8f9;
  margin-bottom: 28px;
  width: fit-content;
}

.badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #22d3ee;
  box-shadow: 0 0 0 3px rgba(34,211,238,.25);
  animation: badge-pulse 1.8s ease-in-out infinite;
}
@keyframes badge-pulse {
  0%,100% { box-shadow: 0 0 0 3px rgba(34,211,238,.25); }
  50%      { box-shadow: 0 0 0 7px rgba(34,211,238,.07); }
}

/* Hero title */
.hero-title {
  font-size: clamp(2.8rem, 5.5vw, 4.6rem);
  font-weight: 900;
  letter-spacing: -.04em;
  line-height: 1.05;
  margin-bottom: 22px;
  color: #fff;
}

/* Shimmer gradient on "Diện Lạnh" */
.hero-title-highlight {
  display: inline-block;
  background: linear-gradient(90deg, #38bdf8, #2563eb, #06b6d4, #38bdf8);
  background-size: 300% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: title-shimmer 4s linear infinite;
}
@keyframes title-shimmer {
  0%   { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

.hero-desc {
  font-size: 1.08rem;
  color: rgba(255,255,255,.68);
  line-height: 1.8;
  margin-bottom: 32px;
}
.desktop-br { display: inline; }

/* CTA buttons */
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  background: linear-gradient(135deg, #2563eb, #0ea5e9);
  color: #fff;
  font-family: inherit;
  font-size: .95rem;
  font-weight: 700;
  border-radius: 10px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 24px rgba(37,99,235,.45);
  transition: all .25s ease;
  animation: cta-glow 2.4s ease-in-out infinite;
  white-space: nowrap;
}
@keyframes cta-glow {
  0%,100% { box-shadow: 0 4px 24px rgba(37,99,235,.45); }
  50%      { box-shadow: 0 6px 36px rgba(37,99,235,.6), 0 0 0 8px rgba(37,99,235,.07); }
}
.btn-hero-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 40px rgba(37,99,235,.6); }

.btn-hero-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 28px;
  background: rgba(255,255,255,.07);
  color: rgba(255,255,255,.9);
  font-family: inherit;
  font-size: .95rem;
  font-weight: 600;
  border-radius: 10px;
  text-decoration: none;
  border: 1px solid rgba(255,255,255,.18);
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: all .25s ease;
  white-space: nowrap;
}
.btn-hero-outline:hover { background: rgba(255,255,255,.14); border-color: rgba(255,255,255,.38); transform: translateY(-2px); }

/* Trust strip */
.hero-trust {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .79rem;
  font-weight: 600;
  color: rgba(255,255,255,.6);
}
.trust-item svg { color: #22d3ee; flex-shrink: 0; }
.trust-sep { width: 1px; height: 14px; background: rgba(255,255,255,.18); margin: 0 4px; }

/* Stats bar removed */

/* Photo card */
.hero-photo-card {
  position: relative;
  z-index: 2;
  animation: float-photo 5s ease-in-out infinite;
}
@keyframes float-photo {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-14px); }
}

.hero-photo-wrap {
  position: relative;
  border-radius: 24px;
  overflow: visible;
}
/* Gradient border ring */
.hero-photo-wrap::before {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 27px;
  background: linear-gradient(135deg, #2563eb, #06b6d4, #2563eb);
  background-size: 200% 200%;
  animation: card-border 4s linear infinite;
  z-index: -1;
}
@keyframes card-border {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.hero-photo-wrap img {
  display: block;
  width: 100%;
  height: 430px;
  object-fit: cover;
  object-position: center top;
  border-radius: 22px;
  box-shadow: 0 32px 80px rgba(0,0,0,.55);
}

/* Floating info badges on photo */
.photo-float {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(12px);
  border-radius: 50px;
  padding: 9px 16px;
  font-size: .8rem;
  font-weight: 700;
  color: #1e293b;
  box-shadow: 0 8px 24px rgba(0,0,0,.2);
  white-space: nowrap;
}
.photo-float-tl {
  top: 22px; left: -20px;
  animation: float-badge 3s ease-in-out infinite alternate;
}
.photo-float-br {
  bottom: 24px; right: -20px;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  border-radius: 14px;
  padding: 10px 14px;
  animation: float-badge 3.5s ease-in-out infinite alternate-reverse;
}
.photo-float-stars { display: flex; gap: 1px; }
@keyframes float-badge {
  from { transform: translateY(0); }
  to   { transform: translateY(-8px); }
}

/* AC visual — keep but simplify */
.hero-ac-visual {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 340px;
  opacity: .6;
  pointer-events: none;
}

.ac-unit { position: relative; }

.ac-body {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-lg);
}

.ac-vent {
  flex: 1;
  height: 4px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  border-radius: 3px;
  opacity: .4;
}

.ac-display { display: flex; flex-direction: column; align-items: center; gap: 5px; margin-left: auto; }

.ac-temp {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--blue);
  letter-spacing: -.02em;
}

.ac-led {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22c55e;
}

.ac-blades {
  background: var(--bg);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 10px 10px;
  padding: 10px 22px;
  display: flex;
  gap: 6px;
}

.blade {
  height: 5px;
  flex: 1;
  max-width: 60px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  border-radius: 3px;
  opacity: .35;
}

/* Scroll hint */
.hero-scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  z-index: 3;
}
.hero-scroll span {
  font-size: .68rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.32);
}
.scroll-icon {
  width: 22px; height: 36px;
  border: 1.5px solid rgba(255,255,255,.18);
  border-radius: 50px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 5px;
}
.scroll-dot {
  width: 3px; height: 7px;
  background: rgba(255,255,255,.45);
  border-radius: 3px;
  animation: scroll-anim 1.6s ease-in-out infinite;
}
@keyframes scroll-anim {
  0%, 100% { transform: translateY(0); opacity: 1; }
  60%       { transform: translateY(9px); opacity: .2; }
}

/* ── SECTION BASE ── */
.section { padding: 96px 0; }

.section-header { text-align: center; margin-bottom: 56px; }

.section-tag {
  display: inline-block;
  padding: 5px 14px;
  background: rgba(37,99,235,.07);
  border: 1px solid rgba(37,99,235,.12);
  border-radius: 50px;
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.2;
  margin-bottom: 14px;
  color: var(--text);
}

.section-desc {
  font-size: .97rem;
  color: var(--text-2);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.75;
}

/* ── SERVICES ── */
.services { background: var(--bg-white); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.service-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow .25s, border-color .25s, transform .25s;
  position: relative;
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: rgba(37,99,235,.25);
  transform: translateY(-4px);
}

/* Image header */
.service-img-wrap {
  position: relative;
  height: 170px;
  overflow: hidden;
  flex-shrink: 0;
}

.service-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
  display: block;
}

.service-card:hover .service-img-wrap img { transform: scale(1.06); }

.service-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 40%, rgba(15,23,42,.55) 100%);
}

/* Body below image */
.service-body {
  padding: 22px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* SVG icon pill */
.service-icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: rgba(37,99,235,.08);
  border: 1px solid rgba(37,99,235,.14);
  border-radius: 12px;
  margin-bottom: 14px;
  color: var(--blue);
  flex-shrink: 0;
}

.service-title {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: 8px;
  color: var(--text);
}

.service-desc {
  font-size: .845rem;
  color: var(--text-2);
  line-height: 1.65;
  margin-bottom: 14px;
  flex: 1;
}

.service-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.service-list li {
  font-size: .8rem;
  color: var(--text-3);
  padding-left: 14px;
  position: relative;
}

.service-list li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--blue);
}

.service-tag {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 4px 12px;
  background: var(--blue);
  color: #fff;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  border-radius: 50px;
  z-index: 2;
  box-shadow: 0 2px 8px rgba(37,99,235,.3);
}

/* ── WHY US ── */
.why-us { background: var(--bg); }

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.why-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  position: relative;
  transition: box-shadow .25s, transform .25s, border-color .25s;
}

.why-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: rgba(37,99,235,.2);
}

.why-number {
  position: absolute;
  top: 20px;
  right: 22px;
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--border);
  letter-spacing: -.05em;
  line-height: 1;
}

/* SVG icon container for why-cards */
.why-icon-svg {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: rgba(37,99,235,.07);
  border: 1px solid rgba(37,99,235,.12);
  border-radius: 14px;
  color: var(--blue);
  margin-bottom: 16px;
  transition: background .25s, transform .25s;
}
.why-card:hover .why-icon-svg {
  background: rgba(37,99,235,.13);
  transform: scale(1.08);
}

/* Legacy emoji fallback (hidden) */
.why-icon { display: none; }

.why-card h3 {
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -.02em;
  color: var(--text);
}

.why-card p {
  font-size: .855rem;
  color: var(--text-2);
  line-height: 1.65;
}

/* ── PROCESS ── */
.process { background: var(--bg-white); }

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}

.process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  padding: 0 16px;
}

.step-circle {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 900;
  color: #fff;
  position: relative;
  z-index: 2;
  margin-bottom: 18px;
  flex-shrink: 0;
}

.step-connector {
  position: absolute;
  top: 26px;
  left: calc(50% + 26px);
  width: calc(100% - 52px);
  height: 1px;
  background: var(--border);
}

.process-step:last-child .step-connector { display: none; }

.step-info h4 {
  font-size: .95rem;
  font-weight: 800;
  margin-bottom: 6px;
  letter-spacing: -.01em;
  color: var(--text);
}

.step-info p {
  font-size: .82rem;
  color: var(--text-2);
  line-height: 1.6;
}

/* ── ABOUT ── */
.about { background: var(--bg); }

.about-container {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 72px;
  align-items: center;
}

.about-visual {
  position: relative;
  height: 480px;
}

/* Real photo fills the about visual */
.about-main-photo {
  position: absolute;
  inset: 0;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-main-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.about-photo-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,23,42,.45) 0%, transparent 60%);
}

/* Experience badge on photo */
.about-exp-badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(8px);
  border-radius: 14px;
  padding: 14px 20px;
  box-shadow: 0 8px 24px rgba(0,0,0,.12);
  animation: float-badge 4s ease-in-out infinite;
}

@keyframes float-badge {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}

.exp-num {
  font-size: 2rem;
  font-weight: 900;
  color: var(--blue);
  line-height: 1;
  letter-spacing: -.04em;
}

.exp-label {
  font-size: .72rem;
  font-weight: 700;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: .06em;
  line-height: 1.4;
}

/* Floating info cards */
.about-card-float {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.8);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,.1);
  z-index: 2;
  animation: float-card 3.5s ease-in-out infinite alternate;
}

.about-card-float.top-right { top: 20px; right: -12px; animation-delay: 0s; }
.about-card-float.bottom-left { bottom: 90px; left: -12px; animation-delay: -1.5s; }

@keyframes float-card {
  from { transform: translateY(0); }
  to   { transform: translateY(-8px); }
}

/* SVG icon in float cards */
.float-icon-svg {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(37,99,235,.06);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Legacy emoji float icon — hide */
.float-icon { display: none; }

.float-text { display: flex; flex-direction: column; line-height: 1.3; }

.float-text strong {
  font-size: 1rem;
  font-weight: 800;
  color: var(--blue);
}

.float-text span {
  font-size: .72rem;
  color: var(--text-3);
}

.about-glow { display: none; }

/* Legacy about-card-main (hidden if photo replaces it) */
.about-card-main { display: none; }

.about-content { display: flex; flex-direction: column; gap: 16px; }

.about-content p {
  font-size: .93rem;
  color: var(--text-2);
  line-height: 1.75;
}

.about-highlights { display: flex; flex-direction: column; gap: 10px; margin-top: 4px; }

.highlight {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .88rem;
  color: var(--text-2);
}

.h-check {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(37,99,235,.1);
  color: var(--blue);
  font-size: .7rem;
  font-weight: 900;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

/* ── TESTIMONIALS ── */
.testimonials { background: var(--bg-white); }

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.testimonial-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: box-shadow .25s, transform .25s;
}

.testimonial-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.stars {
  display: flex;
  gap: 2px;
  margin-bottom: 14px;
}

.review-text {
  font-size: .875rem;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 20px;
  font-style: italic;
  position: relative;
  padding-left: 18px;
}

.review-text::before {
  content: '\201C';
  position: absolute;
  left: 0;
  top: -2px;
  font-size: 1.8rem;
  color: var(--blue);
  font-style: normal;
  line-height: 1;
  opacity: .5;
}

.reviewer { display: flex; align-items: center; gap: 10px; }

/* Real avatar image */
.reviewer-avatar-img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid rgba(37,99,235,.15);
  flex-shrink: 0;
  object-fit: cover;
  background: var(--bg);
}

/* Legacy text avatar — keep hidden */
.reviewer-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .75rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}

.reviewer strong { display: block; font-size: .875rem; font-weight: 700; color: var(--text); }
.reviewer span { font-size: .75rem; color: var(--text-3); }

/* ── CONTACT ── */
.contact { background: var(--bg); }

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 48px;
  align-items: start;
}

.contact-info { display: flex; flex-direction: column; gap: 16px; }

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color .2s;
}

.contact-item:hover { border-color: rgba(37,99,235,.25); }

.contact-icon {
  font-size: 1.25rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(37,99,235,.07);
  border-radius: 8px;
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--blue);
  margin-bottom: 3px;
}

.contact-item p { font-size: .875rem; color: var(--text-2); line-height: 1.6; }

.contact-link {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: .975rem;
  transition: color .2s;
}
.contact-link:hover { color: var(--blue); }

.contact-note { font-size: .75rem !important; color: var(--text-3) !important; margin-top: 3px; }

.contact-cta { display: flex; gap: 10px; flex-wrap: wrap; padding-top: 4px; }

.contact-map {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.contact-map iframe { display: block; }

/* ── FOOTER ── */
.footer {
  background: var(--text);
  padding-top: 52px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}

.footer .logo-name { color: #fff; }
.footer .logo-sub { color: #60a5fa; }

.footer-brand p {
  font-size: .85rem;
  color: #64748b;
  line-height: 1.65;
  margin-top: 14px;
  max-width: 280px;
}

.footer-links h4 {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #64748b;
  margin-bottom: 18px;
}

.footer-links ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }

.footer-links li { font-size: .855rem; color: #94a3b8; }

.footer-links a {
  color: #94a3b8;
  text-decoration: none;
  transition: color .2s;
}
.footer-links a:hover { color: #fff; }

.footer-bottom {
  border-top: 1px solid #1e293b;
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p { font-size: .8rem; color: #475569; }

/* ── FLOATING CTA ── */
.floating-cta {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 800;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.float-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: 50px;
  text-decoration: none;
  font-size: .83rem;
  font-weight: 700;
  color: #fff;
  box-shadow: 0 4px 16px rgba(0,0,0,.15);
  transition: transform .2s, box-shadow .2s;
}

.float-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.2); }

.phone-btn { background: var(--blue); }
.zalo-btn  { background: #0068ff; }

/* ── BACK TO TOP ── */
.back-to-top {
  position: fixed;
  bottom: 24px;
  left: 24px;
  z-index: 800;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--bg-white);
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .3s, transform .3s, background .2s;
  pointer-events: none;
  box-shadow: var(--shadow);
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover { background: var(--blue); color: #fff; border-color: var(--blue); }

/* ── SCROLL REVEAL ── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.in-view { opacity: 1; transform: none; }

/* ── RESPONSIVE ── */
@media (max-width: 1100px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; padding: 72px 0 100px; }
  .hero-photo-card { display: none; }
  .hero-content { max-width: 680px; margin: 0 auto; text-align: center; }
  .hero-badge { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-trust { justify-content: center; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .about-container { grid-template-columns: 1fr; gap: 40px; }
  .about-visual { height: 380px; }
  .about-card-float.top-right { right: 4px; }
  .about-card-float.bottom-left { left: 4px; }
  .contact-wrapper { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  :root { --nav-h: 60px; }

  /* ── NAV MOBILE ── */
  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(248,250,252,.97);
    backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 20px 28px;
    gap: 2px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-110%);
    transition: transform .35s ease;
    z-index: 850;
    pointer-events: none;
    visibility: hidden;
  }

  .nav-links.open {
    transform: translateY(0);
    pointer-events: auto;
    visibility: visible;
  }
  .nav-link { padding: 12px 14px; font-size: .95rem; }
  /* Ẩn nav-cta trên mobile: floating CTA button đã thay thế */
  .nav-cta { display: none; }

  /* ── SECTIONS ── */
  .section { padding: 60px 0; }
  .section-header { margin-bottom: 36px; }
  .section-title { font-size: clamp(1.5rem, 6vw, 2rem); }

  /* ── HERO MOBILE ── */
  .hero { min-height: 100svh; }
  .hero-inner { padding: 64px 0 88px; text-align: center; }
  .hero-content { align-items: center; }
  .hero-badge { font-size: .75rem; padding: 6px 14px; }
  .hero-title { font-size: clamp(2rem, 9vw, 2.8rem); margin-bottom: 16px; }
  .hero-desc { font-size: 1rem; margin-bottom: 24px; }
  .desktop-br { display: none; }

  /* CTA buttons full-width on mobile */
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    margin-bottom: 24px;
  }
  .btn-hero-primary,
  .btn-hero-outline {
    justify-content: center;
    padding: 15px 20px;
    font-size: .95rem;
  }

  /* Trust strip wrap gracefully */
  .hero-trust {
    justify-content: center;
    gap: 8px;
    row-gap: 10px;
    margin-bottom: 0;
  }
  .trust-sep { display: none; }
  .trust-item {
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 50px;
    padding: 5px 12px;
    font-size: .75rem;
  }

  /* ── SERVICES ── */
  .services-grid { grid-template-columns: 1fr; }
  .service-img-wrap { height: 200px; }

  /* ── WHY US ── */
  .why-grid { grid-template-columns: 1fr; }

  /* ── TESTIMONIALS ── */
  .testimonials-grid { grid-template-columns: 1fr; }

  /* ── PROCESS ── */
  .process-steps { grid-template-columns: 1fr; gap: 16px; }
  .process-step { flex-direction: row; align-items: flex-start; text-align: left; gap: 16px; }
  .step-circle { margin-bottom: 0; flex-shrink: 0; }
  .step-connector { display: none; }

  /* ── ABOUT ── */
  .about-visual { height: 300px; }
  .about-card-float.top-right { right: 4px; top: 8px; }
  .about-card-float.bottom-left { left: 4px; bottom: 8px; }

  /* ── CONTACT ── */
  .contact-cta { flex-direction: column; }
  .contact-cta .btn { justify-content: center; }

  /* ── BOOKING ── */
  .booking-section { padding: 64px 0; }
  .booking-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .booking-title { font-size: clamp(1.6rem, 7vw, 2.4rem); }
  .booking-hotline { width: 100%; }
  .booking-form-card { padding: 28px 20px; border-radius: 16px; }
  .form-row { grid-template-columns: 1fr; }

  /* ── FOOTER ── */
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-brand { grid-column: 1; }

  /* ── FLOATING ── */
  .floating-cta { bottom: 16px; right: 16px; }
  .float-label { display: none; }
  .float-btn { width: 52px; height: 52px; border-radius: 50%; padding: 0; justify-content: center; }
  .back-to-top { left: 16px; bottom: 16px; }
}

/* Extra small phones */
@media (max-width: 400px) {
  .container { padding: 0 14px; }
  .hero-title { font-size: clamp(1.8rem, 10vw, 2.4rem); }
  .hero-badge { font-size: .7rem; }
  .btn-hero-primary, .btn-hero-outline { font-size: .88rem; padding: 13px 16px; }
  .booking-form-card { padding: 22px 16px; }
}

/* =============================================
   BOOKING FORM SECTION
   ============================================= */
.booking-section {
  position: relative;
  padding: 100px 0;
  overflow: hidden;
  background: #0b1120;
}

.booking-bg {
  position: absolute; inset: 0;
  background: url('images/service-ac.jpg') center / cover no-repeat;
  filter: brightness(.18) saturate(1.2);
}
.booking-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(120deg, rgba(7,15,36,.96) 0%, rgba(15,35,80,.88) 55%, rgba(37,99,235,.15) 100%);
}

.booking-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 520px;
  gap: 64px;
  align-items: center;
}

/* Left info */
.booking-tag { color: #67e8f9 !important; background: rgba(6,182,212,.1) !important; border-color: rgba(6,182,212,.25) !important; }

.booking-title {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 900;
  color: #fff;
  letter-spacing: -.035em;
  line-height: 1.1;
  margin: 16px 0 18px;
}
.booking-hl {
  display: inline;
  background: linear-gradient(90deg, #38bdf8, #2563eb, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.booking-desc {
  font-size: .97rem;
  color: rgba(255,255,255,.65);
  line-height: 1.75;
  margin-bottom: 28px;
}
.booking-desc strong { color: #38bdf8; }

.booking-perks {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 36px;
}
.booking-perks li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: .9rem;
  color: rgba(255,255,255,.75);
  font-weight: 500;
}
.perk-icon {
  width: 34px; height: 34px;
  border-radius: 8px;
  background: rgba(37,99,235,.18);
  border: 1px solid rgba(37,99,235,.3);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: #38bdf8;
}

.booking-hotline {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 12px;
  backdrop-filter: blur(8px);
  width: fit-content;
}
.booking-hotline svg { color: #38bdf8; flex-shrink: 0; }
.booking-hotline div { display: flex; flex-direction: column; gap: 2px; }
.booking-hotline span { font-size: .72rem; font-weight: 600; text-transform: uppercase; letter-spacing: .07em; color: rgba(255,255,255,.45); }
.booking-hotline a { font-size: 1.15rem; font-weight: 800; color: #fff; text-decoration: none; letter-spacing: -.02em; }
.booking-hotline a:hover { color: #38bdf8; }

/* Right: form card */
.booking-form-card {
  background: #fff;
  border-radius: 20px;
  padding: 40px 36px;
  box-shadow: 0 32px 80px rgba(0,0,0,.35), 0 0 0 1px rgba(37,99,235,.08);
}

.form-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -.03em;
  margin-bottom: 4px;
}
.form-subtitle {
  font-size: .82rem;
  color: var(--text-3);
  margin-bottom: 26px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 16px;
}
.form-group label {
  font-size: .8rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .01em;
}
.req { color: #ef4444; }

/* Input with leading icon */
.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.input-wrap > svg:first-child {
  position: absolute;
  left: 13px;
  color: var(--text-3);
  pointer-events: none;
  flex-shrink: 0;
  z-index: 1;
}
.input-wrap input,
.input-wrap select {
  width: 100%;
  padding: 11px 13px 11px 38px;
  font-family: inherit;
  font-size: .875rem;
  color: var(--text);
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: 9px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  -webkit-appearance: none;
  appearance: none;
}
.input-wrap input:focus,
.input-wrap select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37,99,235,.1);
  background: #fff;
}
.input-wrap input.error,
.input-wrap select.error {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239,68,68,.1);
}

/* Select arrow */
.select-wrap { position: relative; }
.select-arrow {
  position: absolute !important;
  right: 13px;
  color: var(--text-3);
  pointer-events: none;
  left: auto !important;
}

/* Textarea */
.form-group textarea {
  width: 100%;
  padding: 11px 13px;
  font-family: inherit;
  font-size: .875rem;
  color: var(--text);
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: 9px;
  outline: none;
  resize: vertical;
  min-height: 80px;
  transition: border-color .2s, box-shadow .2s;
}
.form-group textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37,99,235,.1);
  background: #fff;
}

/* Field error */
.field-err {
  font-size: .75rem;
  color: #ef4444;
  font-weight: 600;
  min-height: 16px;
}

/* Submit button */
.btn-submit {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, #2563eb, #0ea5e9);
  color: #fff;
  font-family: inherit;
  font-size: .95rem;
  font-weight: 700;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  margin-top: 6px;
  transition: all .25s ease;
  box-shadow: 0 4px 20px rgba(37,99,235,.35);
}
.btn-submit:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(37,99,235,.45); }
.btn-submit:disabled { opacity: .7; cursor: not-allowed; }

.submit-text, .submit-loading { display: flex; align-items: center; gap: 8px; }

@keyframes spin { to { transform: rotate(360deg); } }
.spin { animation: spin 0.8s linear infinite; }

/* Success message */
.form-success {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 16px;
  padding: 16px;
  background: rgba(16,185,129,.08);
  border: 1.5px solid rgba(16,185,129,.25);
  border-radius: 10px;
  color: #065f46;
}
.form-success svg { color: #10b981; flex-shrink: 0; margin-top: 1px; }
.form-success div { display: flex; flex-direction: column; gap: 3px; }
.form-success strong { font-size: .9rem; font-weight: 800; }
.form-success span { font-size: .82rem; }

/* Error message */
.form-error-msg {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  padding: 13px 16px;
  background: rgba(239,68,68,.07);
  border: 1.5px solid rgba(239,68,68,.2);
  border-radius: 10px;
  color: #991b1b;
  font-size: .83rem;
  font-weight: 600;
}
.form-error-msg svg { color: #ef4444; flex-shrink: 0; }