/* Sapphire Echo — Cyber DevOps Hub */
:root {
  --sapphire-deep: #071433;
  --sapphire: #0b1d4a;
  --sapphire-mid: #1a3a7a;
  --indigo-shadow: #15102e;
  --cyan-glass: #5ec8d8;
  --cyan-soft: #7dd3e8;
  --frost: #e8f4f8;
  --white: #ffffff;
  --ink: #d7e8f2;
  --ink-muted: #9bb6c9;
  --glass: rgba(26, 58, 122, 0.42);
  --glass-border: rgba(125, 211, 232, 0.28);
  --radius: 2px;
  --shell: min(1120px, calc(100% - 2.5rem));
  --font-display: "IBM Plex Sans Thai", "Sarabun", sans-serif;
  --font-body: "Sarabun", "IBM Plex Sans Thai", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--ink);
  background:
    radial-gradient(ellipse 90% 60% at 10% -10%, rgba(94, 200, 216, 0.18), transparent 55%),
    radial-gradient(ellipse 70% 50% at 95% 15%, rgba(26, 58, 122, 0.55), transparent 50%),
    linear-gradient(165deg, var(--sapphire-deep) 0%, var(--sapphire) 38%, var(--indigo-shadow) 100%);
  background-attachment: fixed;
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--cyan-soft);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--frost);
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px);
  background: linear-gradient(180deg, rgba(7, 20, 51, 0.92), rgba(7, 20, 51, 0.72));
  border-bottom: 1px solid var(--glass-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--frost);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-mark {
  width: 1.65rem;
  height: 1.65rem;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, var(--white), transparent 40%),
    conic-gradient(from 200deg, var(--cyan-glass), var(--sapphire-mid), var(--cyan-soft), var(--cyan-glass));
  box-shadow: 0 0 0 1px rgba(232, 244, 248, 0.35), 0 0 18px rgba(94, 200, 216, 0.35);
  animation: crystal-pulse 5s ease-in-out infinite;
}

.brand-text {
  font-size: 1.05rem;
}

.site-nav {
  display: flex;
  gap: 1.35rem;
  align-items: center;
}

.site-nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.98rem;
  font-weight: 500;
  position: relative;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.35rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan-glass), transparent);
  transform: scaleX(0);
  transition: transform 0.35s ease;
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-nav a[aria-current="page"] {
  color: var(--frost);
}

.nav-toggle {
  display: none;
  width: 2.6rem;
  height: 2.6rem;
  border: 1px solid var(--glass-border);
  background: var(--glass);
  border-radius: var(--radius);
  padding: 0.55rem;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  height: 2px;
  background: var(--frost);
  border-radius: 1px;
}

/* Buttons — crystalline waveform */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.85rem;
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.3s ease, background 0.3s ease;
}

.btn-wave {
  position: relative;
  overflow: hidden;
  color: var(--sapphire-deep);
  background: linear-gradient(135deg, var(--frost), var(--cyan-soft));
  border-color: rgba(232, 244, 248, 0.55);
  isolation: isolate;
}

.btn-wave::before,
.btn-wave::after {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  width: 12px;
  height: 12px;
  border: 1.5px solid rgba(11, 29, 74, 0.35);
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0.4);
  opacity: 0;
  pointer-events: none;
  z-index: -1;
}

.btn-wave:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 28px rgba(94, 200, 216, 0.28);
}

.btn-wave:hover::before {
  animation: wave-expand 1.4s ease-out infinite;
}

.btn-wave:hover::after {
  animation: wave-expand 1.4s ease-out 0.35s infinite;
}

.btn-ghost {
  color: var(--frost);
  background: transparent;
  border-color: var(--glass-border);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  background: rgba(94, 200, 216, 0.1);
  color: var(--white);
}

@keyframes wave-expand {
  0% {
    opacity: 0.55;
    transform: translate(-50%, -50%) scale(0.5);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(8);
  }
}

@keyframes crystal-pulse {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.18); }
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shimmer-line {
  0% { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}

/* Hero — asymmetric brand-led composition */
.hero {
  position: relative;
  min-height: min(92vh, 820px);
  display: grid;
  align-items: stretch;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(7, 20, 51, 0.88) 0%, rgba(7, 20, 51, 0.55) 42%, rgba(7, 20, 51, 0.25) 68%, rgba(7, 20, 51, 0.55) 100%),
    url("https://images.unsplash.com/photo-1497366216548-37526070297c?w=1600&h=1000&fit=crop") center / cover no-repeat;
  z-index: 0;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 35%;
  background: linear-gradient(180deg, transparent, rgba(7, 20, 51, 0.95));
  z-index: 1;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  align-content: end;
  padding: 7rem 0 4.5rem;
  max-width: 38rem;
  animation: rise-in 0.9s ease both;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--white);
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
  text-shadow: 0 8px 40px rgba(0, 0, 0, 0.35);
}

.hero-lead {
  margin: 0 0 1.75rem;
  font-size: 1.15rem;
  color: var(--frost);
  max-width: 32rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.wave-divider {
  height: 2px;
  width: 100%;
  margin: 0;
  border: 0;
  background: linear-gradient(90deg, transparent, var(--cyan-glass), var(--frost), var(--cyan-glass), transparent);
  background-size: 200% 100%;
  animation: shimmer-line 7s linear infinite;
  opacity: 0.55;
}

/* Sections */
.section {
  padding: 4.5rem 0;
}

.section-head {
  max-width: 38rem;
  margin-bottom: 2.5rem;
  animation: rise-in 0.7s ease both;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  line-height: 1.25;
  margin: 0 0 0.75rem;
  color: var(--white);
  font-weight: 700;
}

.section-head p {
  margin: 0;
  color: var(--ink-muted);
}

.panel {
  background:
    linear-gradient(145deg, rgba(26, 58, 122, 0.35), rgba(7, 20, 51, 0.55)),
    linear-gradient(180deg, rgba(232, 244, 248, 0.06), transparent 40%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
  box-shadow:
    inset 0 1px 0 rgba(232, 244, 248, 0.12),
    0 18px 40px rgba(0, 0, 0, 0.22);
}

/* Service preview — interaction containers, not decorative cards clutter */
.offer-list {
  display: grid;
  gap: 1.25rem;
}

.offer-row {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr);
  gap: 0;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.3s ease, transform 0.25s ease;
}

.offer-row:hover {
  border-color: rgba(125, 211, 232, 0.55);
  transform: translateY(-2px);
  color: inherit;
}

.offer-media {
  min-height: 220px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.offer-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 40%, rgba(7, 20, 51, 0.55));
}

.offer-body {
  padding: 1.6rem 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.55rem;
}

.offer-body h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--frost);
}

.offer-body p {
  margin: 0;
  color: var(--ink-muted);
}

.offer-meta {
  font-size: 0.92rem;
  color: var(--cyan-soft);
  font-weight: 600;
}

/* Evidence / quotes */
.evidence {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.quote {
  padding: 1.75rem;
}

.quote blockquote {
  margin: 0 0 1rem;
  font-size: 1.08rem;
  color: var(--frost);
}

.quote cite {
  font-style: normal;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

/* Framework steps */
.steps {
  counter-reset: step;
  display: grid;
  gap: 1.5rem;
}

.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  padding: 1.5rem 1.6rem;
  align-items: start;
}

.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--cyan-glass);
  line-height: 1;
  padding-top: 0.15rem;
}

.step h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  color: var(--frost);
  font-size: 1.2rem;
}

.step p {
  margin: 0;
  color: var(--ink-muted);
}

/* Blog */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.blog-item {
  display: grid;
  grid-template-rows: 200px 1fr;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform 0.25s ease, border-color 0.3s ease;
}

.blog-item:hover {
  transform: translateY(-3px);
  border-color: rgba(125, 211, 232, 0.5);
  color: inherit;
}

.blog-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.blog-item-body {
  padding: 1.35rem 1.45rem 1.55rem;
}

.blog-item time {
  display: block;
  font-size: 0.85rem;
  color: var(--cyan-soft);
  margin-bottom: 0.45rem;
}

.blog-item h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--frost);
  line-height: 1.35;
}

.blog-item p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.98rem;
}

/* Page hero (inner pages) */
.page-hero {
  padding: 4rem 0 2.5rem;
  position: relative;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  margin: 0 0 0.85rem;
  color: var(--white);
  line-height: 1.2;
  max-width: 18ch;
}

.page-hero p {
  margin: 0;
  max-width: 40rem;
  color: var(--ink-muted);
  font-size: 1.08rem;
}

.page-hero-media {
  margin-top: 2rem;
  min-height: 280px;
  background-size: cover;
  background-position: center;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: inset 0 0 60px rgba(7, 20, 51, 0.35);
  position: relative;
  overflow: hidden;
}

.page-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(7, 20, 51, 0.45), transparent 50%),
    linear-gradient(0deg, rgba(7, 20, 51, 0.5), transparent 40%);
}

/* Prose */
.prose {
  max-width: 42rem;
}

.prose h2 {
  font-family: var(--font-display);
  color: var(--frost);
  font-size: 1.45rem;
  margin: 2.2rem 0 0.75rem;
}

.prose p,
.prose li {
  color: var(--ink);
}

.prose ul {
  padding-left: 1.2rem;
}

.prose li + li {
  margin-top: 0.4rem;
}

.include-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 0.65rem;
}

.include-list li {
  padding: 0.75rem 1rem;
  border-left: 2px solid var(--cyan-glass);
  background: rgba(26, 58, 122, 0.28);
}

/* Team */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.person {
  text-align: left;
}

.person img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border: 1px solid var(--glass-border);
  margin-bottom: 1rem;
  filter: saturate(0.92);
}

.person h3 {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  color: var(--frost);
  font-size: 1.15rem;
}

.person .role {
  margin: 0 0 0.65rem;
  color: var(--cyan-soft);
  font-size: 0.92rem;
  font-weight: 600;
}

.person p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

/* Forms */
.form-panel {
  padding: 2rem;
  max-width: 36rem;
}

.form-group {
  margin-bottom: 1.15rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 600;
  color: var(--frost);
  font-family: var(--font-display);
  font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  background: rgba(7, 20, 51, 0.55);
  color: var(--frost);
  font-family: var(--font-body);
  font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: 2px solid rgba(94, 200, 216, 0.55);
  outline-offset: 1px;
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.field-error {
  display: none;
  margin-top: 0.35rem;
  color: #ffb4b4;
  font-size: 0.88rem;
}

.form-group.is-invalid .field-error {
  display: block;
}

.form-group.is-invalid input,
.form-group.is-invalid select,
.form-group.is-invalid textarea {
  border-color: #e88a8a;
}

.form-status {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  display: none;
}

.form-status.is-success {
  display: block;
  background: rgba(94, 200, 216, 0.15);
  border: 1px solid rgba(94, 200, 216, 0.45);
  color: var(--frost);
}

.form-status.is-error {
  display: block;
  background: rgba(180, 60, 60, 0.2);
  border: 1px solid rgba(232, 138, 138, 0.45);
  color: #ffd0d0;
}

/* Footer */
.site-footer {
  margin-top: 3rem;
  border-top: 1px solid var(--glass-border);
  background: rgba(7, 20, 51, 0.65);
  padding: 3rem 0 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 2rem;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--white);
  margin: 0 0 0.5rem;
}

.footer-note,
.site-footer p {
  color: var(--ink-muted);
  margin: 0 0 0.45rem;
  font-size: 0.95rem;
}

.footer-label {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--frost) !important;
  margin-bottom: 0.75rem !important;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li + li {
  margin-top: 0.4rem;
}

.footer-links a {
  text-decoration: none;
  color: var(--ink-muted);
}

.footer-links a:hover {
  color: var(--cyan-soft);
}

.footer-bottom {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(125, 211, 232, 0.15);
}

.footer-bottom p {
  margin: 0;
  font-size: 0.88rem;
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  inset: auto 0 0 0;
  z-index: 60;
  padding: 1rem 0 1.25rem;
  background: linear-gradient(180deg, rgba(7, 20, 51, 0.2), rgba(7, 20, 51, 0.95));
  backdrop-filter: blur(14px);
  border-top: 1px solid var(--glass-border);
}

.cookie-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  background: var(--glass);
  border: 1px solid var(--glass-border);
}

.cookie-title {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--white);
}

.cookie-copy {
  flex: 1 1 18rem;
}

.cookie-copy p {
  margin: 0;
  color: var(--ink);
  font-size: 0.95rem;
}

.cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.cookie-error {
  flex-basis: 100%;
  margin: 0;
  color: #ffb4b4;
  font-size: 0.9rem;
}

/* 404 */
.error-page {
  min-height: 60vh;
  display: grid;
  align-content: center;
  padding: 4rem 0;
}

.error-page h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  color: var(--white);
  margin: 0 0 0.75rem;
}

.error-code {
  font-family: var(--font-display);
  color: var(--cyan-glass);
  letter-spacing: 0.2em;
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}

/* Service detail layout */
.detail-layout {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr;
  gap: 2rem;
  align-items: start;
}

.detail-aside {
  padding: 1.5rem;
  position: sticky;
  top: 5.5rem;
}

.detail-aside dl {
  margin: 0 0 1.25rem;
}

.detail-aside dt {
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin-top: 0.85rem;
}

.detail-aside dd {
  margin: 0.2rem 0 0;
  color: var(--frost);
  font-weight: 600;
  font-family: var(--font-display);
}

.cta-band {
  padding: 2.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.cta-band h2 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  color: var(--white);
  font-size: 1.55rem;
}

.cta-band p {
  margin: 0;
  color: var(--ink-muted);
  max-width: 32rem;
}

/* Framework visual */
.resonance-map {
  display: grid;
  gap: 0.85rem;
  margin-top: 2rem;
}

.resonance-row {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 1rem;
  align-items: center;
}

.resonance-row span {
  font-family: var(--font-display);
  font-size: 0.88rem;
  color: var(--cyan-soft);
  font-weight: 600;
}

.resonance-bar {
  height: 10px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--sapphire-mid), var(--cyan-glass), var(--frost));
  transform-origin: left center;
  animation: rise-in 1s ease both;
  box-shadow: 0 0 16px rgba(94, 200, 216, 0.35);
}

/* Responsive */
@media (max-width: 900px) {
  .offer-row,
  .detail-layout,
  .evidence,
  .blog-grid,
  .team-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .offer-media {
    min-height: 180px;
  }

  .offer-media::after {
    background: linear-gradient(180deg, transparent 30%, rgba(7, 20, 51, 0.65));
  }
}

@media (max-width: 760px) {
  :root {
    --shell: min(1120px, calc(100% - 1.5rem));
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 4.25rem;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 1.25rem 1.25rem;
    background: rgba(7, 20, 51, 0.97);
    border-bottom: 1px solid var(--glass-border);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 0.85rem 0.25rem;
    border-bottom: 1px solid rgba(125, 211, 232, 0.12);
  }

  .hero-inner {
    padding: 5.5rem 0 3.25rem;
  }

  .header-inner {
    position: relative;
  }

  .resonance-row {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
}