/* ============================================================
   Telcopro — Company Website
   ============================================================ */

:root {
  --navy-900: #081726;
  --navy-800: #0B1E31;
  --navy-700: #0D2235;
  --navy-600: #123049;
  --blue-500: #3B8BC4;
  --blue-400: #4A9FD8;
  --blue-300: #7FB2DC;
  --blue-100: #D9E9F5;
  --amber-500: #F5A93B;
  --amber-600: #E8931C;
  --ink: #14212E;
  --ink-soft: #45586B;
  --paper: #F6F9FC;
  --white: #FFFFFF;
  --line: rgba(20, 47, 74, 0.1);
  --line-dark: rgba(127, 178, 220, 0.16);
  --font-sans: 'IBM Plex Sans Thai', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
  --radius: 14px;
  --container: 1160px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 104px 0; }

h1, h2, h3 { line-height: 1.25; font-weight: 700; }

h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); letter-spacing: -0.01em; }

.kicker {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber-500);
  margin-bottom: 18px;
}

.kicker::before {
  content: "";
  display: inline-block;
  width: 26px;
  height: 2px;
  background: var(--amber-500);
  vertical-align: middle;
  margin-right: 12px;
}

.kicker-dark { color: var(--amber-600); }
.kicker-dark::before { background: var(--amber-600); }

.section-head { max-width: 640px; margin-bottom: 56px; }
.section-sub { margin-top: 16px; color: var(--ink-soft); }

/* ============ NAVBAR ============ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo { height: 42px; width: auto; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 34px;
  font-weight: 500;
  font-size: 0.95rem;
}

.main-nav a:not(.nav-cta) {
  position: relative;
  padding: 4px 0;
  color: var(--ink);
  transition: color 0.2s;
}

.main-nav a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 2px;
  background: var(--amber-500);
  transition: width 0.25s;
}

.main-nav a:not(.nav-cta):hover { color: var(--blue-500); }
.main-nav a:not(.nav-cta):hover::after { width: 100%; }

.nav-cta {
  background: var(--navy-800);
  color: var(--white) !important;
  padding: 10px 22px;
  border-radius: 999px;
  font-weight: 600;
  transition: background 0.2s, transform 0.2s;
}

.nav-cta:hover { background: var(--blue-500); transform: translateY(-1px); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--ink);
  transition: transform 0.25s, opacity 0.25s;
}

/* ============ HERO ============ */

.hero {
  position: relative;
  background: linear-gradient(160deg, var(--navy-900) 0%, var(--navy-700) 70%, #0E2A42 100%);
  color: var(--white);
  overflow: hidden;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(127, 178, 220, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(127, 178, 220, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 40%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 40%, #000 40%, transparent 100%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
  padding-top: 96px;
  padding-bottom: 104px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  letter-spacing: -0.015em;
  margin-bottom: 24px;
}

.hero h1 .accent {
  color: var(--amber-500);
  position: relative;
}

.hero-sub {
  color: var(--blue-100);
  opacity: 0.85;
  max-width: 520px;
  margin-bottom: 36px;
  font-weight: 300;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.2s, background 0.2s, border-color 0.2s;
}

.btn-primary {
  background: var(--amber-500);
  color: var(--navy-900);
}

.btn-primary:hover { background: #FFBE55; transform: translateY(-2px); }

.btn-ghost {
  border: 1px solid var(--line-dark);
  color: var(--blue-100);
}

.btn-ghost:hover { border-color: var(--blue-400); color: var(--white); }

.hero-visual { position: relative; }

.visual-tabs {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-bottom: 14px;
}

.vtab {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--blue-300);
  background: transparent;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  padding: 7px 16px;
  cursor: pointer;
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}

.vtab:hover { color: var(--white); border-color: var(--blue-400); }

.vtab.active {
  background: var(--amber-500);
  border-color: var(--amber-500);
  color: var(--navy-900);
  font-weight: 500;
}

.vpanel { display: none; }

.vpanel.active { display: block; animation: panelFade 0.5s ease; }

@keyframes panelFade {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

.route-svg {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 24px 48px rgba(0, 0, 0, 0.35));
  border-radius: 14px;
  border: 1px solid var(--line-dark);
}

.route-line {
  stroke-dashoffset: 0;
  animation: dashMove 30s linear infinite;
}

@keyframes dashMove {
  to { stroke-dashoffset: -660; }
}

.pulse-dot { animation: pulse 2s ease-in-out infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ============ ABOUT ============ */

.about-inner {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: start;
}

.about-head { position: sticky; top: 110px; }

.about-body p { color: var(--ink-soft); margin-bottom: 20px; }

.about-points { margin-top: 44px; display: grid; gap: 0; }

.point {
  display: flex;
  gap: 24px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}

.point-no {
  font-family: var(--font-mono);
  color: var(--amber-600);
  font-size: 0.9rem;
  padding-top: 4px;
}

.point h3 { font-size: 1.08rem; margin-bottom: 6px; }
.point p { font-size: 0.95rem; margin-bottom: 0; }

/* ============ SERVICES ============ */

.services {
  background: var(--navy-800);
  color: var(--white);
}

.services h2 { color: var(--white); }

.service-list { border-top: 1px solid var(--line-dark); }

.service-row {
  display: grid;
  grid-template-columns: 72px 1fr 220px;
  gap: 32px;
  padding: 40px 12px;
  border-bottom: 1px solid var(--line-dark);
  border-radius: 6px;
  transition: background 0.25s;
}

.service-row:hover { background: rgba(74, 159, 216, 0.06); }

.service-no {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--blue-300);
  padding-top: 6px;
}

.service-main h3 { font-size: 1.3rem; margin-bottom: 4px; }

.service-en {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--amber-500);
  margin-bottom: 14px;
}

.service-main > p:last-child {
  color: var(--blue-100);
  opacity: 0.75;
  font-weight: 300;
  font-size: 0.97rem;
  max-width: 560px;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-content: flex-start;
  justify-content: flex-end;
}

.service-tags span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--blue-300);
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  padding: 5px 12px;
  height: fit-content;
  white-space: nowrap;
}

/* ============ PROJECTS ============ */

.projects { background: var(--paper); }

.project-groups {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.project-group {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
}

.project-group:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(13, 34, 53, 0.09);
}

.pg-head {
  padding: 26px 26px 20px;
  border-bottom: 2px solid var(--amber-500);
}

.pg-head h3 { font-size: 1.12rem; }
.pg-head p { font-size: 0.88rem; color: var(--ink-soft); margin-top: 2px; }

.pg-list li {
  display: grid;
  gap: 2px;
  padding: 18px 26px;
  border-bottom: 1px solid var(--line);
}

.pg-list li:last-child { border-bottom: 0; }

.pg-name { font-weight: 600; font-size: 0.94rem; }
.pg-desc { font-size: 0.84rem; color: var(--ink-soft); }

/* ---- site photo marquee ---- */

.site-gallery { margin-top: 72px; }

.sg-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.sg-head h3 { font-size: 1.2rem; }

.sg-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
}

.sg-marquee {
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}

.sg-track {
  display: flex;
  width: max-content;
  animation: sgScroll 60s linear infinite;
}

.sg-marquee:hover .sg-track { animation-play-state: paused; }

@keyframes sgScroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.sg-card {
  width: 250px;
  margin-right: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
}

.sg-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.sg-card figcaption { padding: 12px 16px 14px; }

.sg-card strong {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sg-card span {
  display: block;
  font-size: 0.76rem;
  color: var(--ink-soft);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (prefers-reduced-motion: reduce) {
  .sg-track { animation: none; }
  .sg-marquee { overflow-x: auto; mask-image: none; -webkit-mask-image: none; }
}

/* ============ TEAM ============ */

.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 880px;
}

.team-card {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.team-card:hover {
  border-color: var(--blue-400);
  box-shadow: 0 14px 34px rgba(13, 34, 53, 0.08);
}

.team-avatar {
  flex: 0 0 auto;
  width: 64px; height: 64px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--blue-500), var(--navy-600));
  color: var(--white);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.team-info h3 { font-size: 1.15rem; }
.team-info h3 span { font-weight: 400; color: var(--ink-soft); }

.team-role {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--amber-600);
  margin: 4px 0 10px;
}

.team-desc { font-size: 0.92rem; color: var(--ink-soft); }

/* ============ CONTACT ============ */

.contact {
  position: relative;
  background: linear-gradient(150deg, var(--navy-900), var(--navy-700));
  color: var(--white);
  overflow: hidden;
}

.contact-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.contact-sub {
  margin-top: 18px;
  color: var(--blue-100);
  opacity: 0.8;
  font-weight: 300;
  max-width: 440px;
}

.contact-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.contact-card {
  display: block;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  padding: 22px;
  background: rgba(16, 42, 66, 0.5);
  transition: border-color 0.25s, background 0.25s, transform 0.25s;
}

a.contact-card:hover {
  border-color: var(--amber-500);
  background: rgba(16, 42, 66, 0.9);
  transform: translateY(-2px);
}

.cc-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--amber-500);
  margin-bottom: 8px;
}

.cc-value { font-weight: 600; font-size: 0.98rem; line-height: 1.5; }

/* ============ FOOTER ============ */

.site-footer {
  background: var(--navy-900);
  border-top: 1px solid var(--line-dark);
  padding: 44px 0;
  color: var(--blue-300);
}

.footer-inner { text-align: center; }

.footer-logo {
  height: 52px;
  width: auto;
  margin: 0 auto 14px;
}

.footer-tag { font-size: 0.86rem; margin-bottom: 6px; }
.footer-copy { font-size: 0.78rem; opacity: 0.6; font-family: var(--font-mono); }

.footer-admin { color: inherit; text-decoration: underline; text-underline-offset: 3px; }
.footer-admin:hover { color: var(--amber-500); }

/* ============ REVEAL ANIMATION ============ */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .route-line, .pulse-dot { animation: none; }
  .vpanel.active { animation: none; }
  html { scroll-behavior: auto; }
}

/* ============ RESPONSIVE ============ */

@media (max-width: 960px) {
  .section { padding: 76px 0; }

  .hero-inner { grid-template-columns: 1fr; padding-top: 64px; padding-bottom: 72px; }
  .hero-visual { max-width: 480px; }

  .about-inner { grid-template-columns: 1fr; gap: 36px; }
  .about-head { position: static; }

  .service-row { grid-template-columns: 48px 1fr; }
  .service-tags { grid-column: 2; justify-content: flex-start; margin-top: 4px; }

  .project-groups { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 700px) {
  .nav-toggle { display: flex; }

  .main-nav {
    position: fixed;
    top: 72px;
    right: 0;
    left: 0;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 12px 24px 20px;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 40px rgba(13, 34, 53, 0.12);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.25s, opacity 0.25s, visibility 0.25s;
  }

  .main-nav.open { transform: none; opacity: 1; visibility: visible; }

  .main-nav a:not(.nav-cta) { padding: 14px 0; width: 100%; border-bottom: 1px solid var(--line); }
  .nav-cta { margin-top: 16px; text-align: center; width: 100%; }

  .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); }

  .contact-cards { grid-template-columns: 1fr; }
}