:root {
  --bg: #f7f8f4;
  --surface: #ffffff;
  --surface-soft: #eef3ef;
  --text: #102033;
  --muted: #66737f;
  --line: #dfe6e1;
  --green: #2ecc71;
  --teal: #14b8a6;
  --blue: #3b82f6;
  --navy: #0f1d2d;
  --radius: 28px;
  --shadow: 0 24px 70px rgba(15, 29, 45, .08);
  --container: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; }

.container {
  width: min(calc(100% - 40px), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 248, 244, .88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(223, 230, 225, .75);
}

.nav-wrap {
  height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1;
}


.brand img {
  display: block;
  width: 190px;
  height: auto;
}
.brand-footer img {
  width: 210px;
}
.brand-main {
  font-family: Sora, sans-serif;
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -1.8px;
  color: var(--navy);
}
.brand-e {
  background: linear-gradient(120deg, var(--green), var(--teal), var(--blue));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.brand-sub {
  margin-top: 6px;
  font-size: 8px;
  letter-spacing: 5px;
  font-weight: 600;
  color: #65727b;
}

.nav {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 14px;
  color: #42505c;
}
.nav a { transition: .2s ease; }
.nav a:hover { color: var(--blue); }

.menu-toggle {
  display: none;
  border: 0;
  background: transparent;
  width: 44px;
  height: 44px;
  padding: 11px;
}
.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--navy);
  margin: 6px 0;
}

.hero {
  padding: 98px 0 92px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.12fr .88fr;
  gap: 70px;
  align-items: center;
}

.eyebrow, .section-kicker {
  margin: 0 0 18px;
  color: #5e6c77;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2.2px;
}

.hero h1, .section h2 {
  font-family: Sora, sans-serif;
  margin: 0;
  letter-spacing: -2.4px;
  color: var(--navy);
}

.hero h1 {
  max-width: 760px;
  font-size: clamp(46px, 6.2vw, 82px);
  line-height: 1.02;
}
.hero h1 span {
  background: linear-gradient(100deg, var(--green), var(--teal), var(--blue));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-text {
  max-width: 650px;
  margin: 28px 0 0;
  font-size: 18px;
  line-height: 1.75;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 34px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
}
.btn-primary {
  color: white;
  background: linear-gradient(110deg, #18b96f, #2389ef);
  box-shadow: 0 12px 30px rgba(35, 137, 239, .20);
}
.btn-ghost {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.58);
}

.hero-card {
  position: relative;
  min-height: 500px;
  border-radius: 36px;
  overflow: hidden;
  background:
    radial-gradient(circle at 28% 22%, rgba(46,204,113,.22), transparent 32%),
    radial-gradient(circle at 76% 62%, rgba(59,130,246,.22), transparent 36%),
    linear-gradient(145deg, #edf8f0, #eff6fb 50%, #f9fbfc);
  border: 1px solid #e1e8e4;
  box-shadow: var(--shadow);
}

.hero-orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(25, 65, 84, .13);
}
.orbit-a { width: 360px; height: 360px; top: 68px; left: 65px; }
.orbit-b { width: 250px; height: 250px; top: 122px; left: 120px; border-color: rgba(20,184,166,.24); }

.hero-mark {
  position: absolute;
  left: 50%;
  top: 46%;
  transform: translate(-50%, -50%);
  font-family: Sora, sans-serif;
  font-size: 56px;
  font-weight: 800;
  letter-spacing: -4px;
  color: var(--navy);
}
.hero-mark span { color: var(--teal); }

.hero-card-copy {
  position: absolute;
  left: 36px;
  right: 36px;
  bottom: 34px;
  padding-top: 20px;
  border-top: 1px solid rgba(15,29,45,.11);
}
.hero-card-copy strong, .hero-card-copy span { display: block; }
.hero-card-copy strong { font-family: Sora, sans-serif; font-size: 18px; }
.hero-card-copy span { margin-top: 7px; color: var(--muted); font-size: 14px; }

.section {
  padding: 110px 0;
  border-top: 1px solid var(--line);
}
.section h2 {
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.08;
}
.split {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 90px;
}
.copy { max-width: 680px; }
.copy p {
  margin: 0 0 22px;
  font-size: 18px;
  line-height: 1.8;
  color: var(--muted);
}
.copy strong { color: var(--navy); }

.project-section { background: #fbfcfa; }
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 25px;
  margin-bottom: 38px;
}
.status {
  display: inline-flex;
  padding: 9px 12px;
  border-radius: 999px;
  background: #e8f8ef;
  color: #1f8f57;
  border: 1px solid #cdeedb;
  font-size: 11px;
  letter-spacing: 1px;
  font-weight: 700;
}

.project-card {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.project-visual {
  min-height: 540px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(#cfe8f4, #eff4ed);
}
.project-sky {
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 65% 20%, rgba(255,255,255,.95), transparent 18%),
    linear-gradient(180deg, #bfe1ef 0%, #d8e7e7 42%, #a6c2af 100%);
}
.project-mountain {
  position: absolute;
  bottom: -80px;
  width: 110%;
  height: 70%;
  left: -5%;
  background: linear-gradient(140deg, #517268, #1f3e40);
  clip-path: polygon(0 100%, 10% 76%, 22% 65%, 34% 74%, 44% 44%, 55% 60%, 67% 31%, 76% 51%, 86% 38%, 100% 72%, 100% 100%);
}
.mountain-b {
  opacity: .46;
  bottom: -120px;
  left: -15%;
  transform: scale(1.08);
  background: #76958d;
}
.project-light {
  position: absolute;
  width: 320px; height: 320px;
  border-radius: 50%;
  top: 65px; right: 70px;
  background: radial-gradient(circle, rgba(255,255,255,.72), rgba(46,204,113,.06) 45%, transparent 67%);
}
.project-title {
  position: absolute;
  left: 38px; bottom: 36px;
  font-family: Sora, sans-serif;
  font-size: clamp(36px, 4vw, 62px);
  font-weight: 800;
  line-height: .95;
  letter-spacing: -3px;
  color: white;
  text-shadow: 0 8px 30px rgba(0,0,0,.24);
}

.project-info {
  padding: 54px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.project-type {
  margin: 0 0 18px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.4px;
}
.project-info h3 {
  margin: 0;
  font-family: Sora, sans-serif;
  font-size: 34px;
  line-height: 1.15;
  letter-spacing: -1.2px;
}
.project-info > p:not(.project-type) {
  margin: 22px 0 30px;
  line-height: 1.8;
  color: var(--muted);
}
.project-meta {
  border-top: 1px solid var(--line);
}
.project-meta div {
  display: flex;
  justify-content: space-between;
  gap: 22px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}
.project-meta span { color: var(--muted); }
.project-meta strong { text-align: right; }

.values-grid {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.values-grid article {
  padding: 34px;
  min-height: 250px;
  border-radius: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
}
.values-grid article > span {
  color: var(--teal);
  font-weight: 700;
  font-size: 12px;
}
.values-grid h3 {
  margin: 46px 0 12px;
  font-family: Sora, sans-serif;
  font-size: 22px;
}
.values-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.company-section { background: #f0f4f1; }
.company-grid {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 70px;
  align-items: start;
}
.company-note {
  max-width: 430px;
  color: var(--muted);
  line-height: 1.7;
}
.company-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 10px 30px;
}
.company-card div {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 30px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.company-card div:last-child { border-bottom: 0; }
.company-card span { color: var(--muted); font-size: 13px; }
.company-card strong { font-size: 14px; line-height: 1.5; }

.contact-box {
  padding: 54px;
  border-radius: 28px;
  color: white;
  background:
    radial-gradient(circle at 80% 0%, rgba(59,130,246,.42), transparent 34%),
    radial-gradient(circle at 0% 100%, rgba(46,204,113,.32), transparent 32%),
    var(--navy);
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 50px;
}
.contact-box .section-kicker { color: #98aab8; }
.contact-box h2 { color: white; }
.contact-actions { align-self: end; }
.contact-mail {
  display: inline-block;
  font-family: Sora, sans-serif;
  font-size: clamp(20px, 2.2vw, 30px);
  font-weight: 700;
}
.contact-actions p {
  margin: 12px 0 0;
  color: #9eafba;
}

.footer {
  padding: 52px 0;
  background: #f7f8f4;
  border-top: 1px solid var(--line);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 40px;
  align-items: end;
}
.brand-footer .brand-main { font-size: 24px; }
.footer-grid > div > p {
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--muted);
}
.footer-links {
  display: flex;
  gap: 20px;
  font-size: 13px;
  color: #53616c;
}
.footer-copy {
  text-align: right;
  font-size: 12px;
  color: var(--muted);
}
.footer-copy p { margin: 5px 0 !important; }

@media (max-width: 900px) {
  .nav { display: none; }
  .menu-toggle { display: block; }
  .nav.is-open {
    display: flex;
    position: absolute;
    left: 20px;
    right: 20px;
    top: 74px;
    padding: 18px;
    background: white;
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: var(--shadow);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .nav.is-open a { padding: 13px 8px; }

  .hero { padding: 64px 0 70px; }
  .hero-grid, .split, .project-card, .company-grid, .contact-box {
    grid-template-columns: 1fr;
  }
  .hero-grid { gap: 42px; }
  .hero-card { min-height: 390px; }
  .split, .company-grid { gap: 38px; }
  .project-visual { min-height: 420px; }
  .values-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; align-items: start; }
  .footer-copy { text-align: left; }
}

@media (max-width: 600px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .nav-wrap { height: 72px; }
  .brand-main { font-size: 24px; }
  .brand-sub { letter-spacing: 4px; }

  .hero h1 { letter-spacing: -1.8px; }
  .hero-text { font-size: 16px; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; }

  .section { padding: 78px 0; }
  .section-head { align-items: flex-start; flex-direction: column; }
  .project-info { padding: 34px 26px; }
  .project-info h3 { font-size: 28px; }
  .project-meta div { flex-direction: column; gap: 5px; }
  .project-meta strong { text-align: left; }
  .company-card { padding: 8px 22px; }
  .company-card div { grid-template-columns: 1fr; gap: 7px; }
  .contact-box { padding: 36px 26px; }
  .footer-links { flex-wrap: wrap; }
}

@media (max-width: 600px) {
  .brand img { width: 158px; }
  .brand-footer img { width: 190px; }
}
/* =========================
   PROJECT CARD - HOVER EFFECT
   ========================= */

.project-card {
  position: relative;
  overflow: hidden;

  color: inherit;
  text-decoration: none;
  cursor: pointer;

  transition:
    transform 0.35s ease,
    box-shadow 0.35s ease,
    border-color 0.35s ease;
}


/* Card nổi nhẹ khi hover */
.project-card:hover {
  transform: translateY(-6px);

  box-shadow:
    0 20px 45px rgba(20, 45, 40, 0.12),
    0 6px 16px rgba(20, 45, 40, 0.06);
}


/* Ảnh chuyển động nhẹ */
.project-card .project-visual {
  overflow: hidden;
}

.project-card .project-visual img {
  transition:
    transform 0.6s ease,
    filter 0.6s ease;
}

.project-card:hover .project-visual img {
  transform: scale(1.035);
  filter: brightness(1.05) contrast(1.03);
}


/* Tiêu đề chuyển sang màu nhận diện DAMMe */
.project-card h3 {
  transition:
    color 0.3s ease,
    transform 0.3s ease;
}

.project-card:hover h3 {
  color: #3f765f;
  transform: translateX(3px);
}


/* Metadata chuyển động cực nhẹ */
.project-card .project-meta {
  transition: transform 0.35s ease;
}

.project-card:hover .project-meta {
  transform: translateY(-2px);
}


/* Ánh sáng quét rất nhẹ trên card */
.project-card::after {
  content: "";
  position: absolute;

  top: 0;
  left: -120%;

  width: 60%;
  height: 100%;

  background: linear-gradient(
    110deg,
    transparent,
    rgba(255, 255, 255, 0.16),
    transparent
  );

  transform: skewX(-15deg);
  pointer-events: none;

  transition: left 0.7s ease;
}

.project-card:hover::after {
  left: 140%;
}


/* Khi click */
.project-card:active {
  transform: translateY(-2px) scale(0.995);
}


/* Hỗ trợ người dùng tắt animation */
@media (prefers-reduced-motion: reduce) {
  .project-card,
  .project-card *,
  .project-card::after {
    transition: none !important;
  }
}