@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Thai:wght@300;400;500;700&display=swap');

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --c-red: #ff0000;
  --c-purple: #8b00ff;
  --c-dark: #261717;
  --c-dark2: #1a0f0f;
  --c-dark3: #0e0808;
  --c-glass: rgba(255,255,255,0.10);
  --c-glass-border: rgba(255,255,255,0.18);
  --c-glass-hover: rgba(255,255,255,0.18);
  --c-text: #f0e8e8;
  --c-text-muted: rgba(240,232,232,0.65);
  --c-accent: #ff0000;
  --c-accent2: #8b00ff;
  --font: 'Noto Sans Thai', 'Noto Sans SC', system-ui, sans-serif;
  --radius: 4px;
  --nav-h: 64px;
  --announce-h: 36px;
  --header-h: calc(var(--nav-h) + var(--announce-h));
  --max-w: 1200px;
  --trans: 0.25s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 17px;
  color: var(--c-text);
  background: var(--c-dark3);
}

body {
  font-family: var(--font);
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--c-dark3);
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-red); text-decoration: none; transition: color var(--trans), opacity var(--trans); }
a:hover { color: var(--c-purple); }
ul, menu { list-style: none; }

/* ===== Animated BG ===== */
.bg-scene {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background: radial-gradient(ellipse at 20% 30%, #3d0a0a 0%, #261717 40%, #0e0808 100%);
}
.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  animation: orbFloat 12s ease-in-out infinite alternate;
}
.orb1 {
  width: 520px; height: 520px;
  background: radial-gradient(circle, #ff000055, transparent 70%);
  top: -120px; left: -100px;
  animation-duration: 14s;
}
.orb2 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #8b00ff44, transparent 70%);
  bottom: -150px; right: -120px;
  animation-duration: 18s;
  animation-delay: -5s;
}
.orb3 {
  width: 380px; height: 380px;
  background: radial-gradient(circle, #ff004488, transparent 70%);
  top: 40%; left: 45%;
  animation-duration: 22s;
  animation-delay: -9s;
}
@keyframes orbFloat {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(40px, 30px) scale(1.08); }
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(38,23,23,0.72);
  border-bottom: 1px solid var(--c-glass-border);
}

.header-announce {
  height: var(--announce-h);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  background: linear-gradient(90deg, var(--c-red), var(--c-purple), var(--c-red));
  background-size: 200% 100%;
  animation: announceShift 6s linear infinite;
  color: #fff;
  text-align: center;
  padding: 0 1rem;
}
@keyframes announceShift {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

/* ===== Details / Summary nav structure ===== */
.nav-details {
  position: relative;
}
.nav-details[open] > summary .nav-toggle-icon { opacity: 0; }
.nav-details[open] > menu { display: flex; }

.nav-summary {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  cursor: default;
  list-style: none;
  padding: 0 1.5rem;
  max-width: var(--max-w);
  margin: 0 auto;
}
.nav-summary::-webkit-details-marker { display: none; }

.nav-brand-center {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.brand-link {
  display: flex;
  align-items: center;
  color: var(--c-text);
}
.brand-text {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: linear-gradient(135deg, var(--c-red), var(--c-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.brand-logo { height: 38px; width: auto; }

.nav-toggle-label { display: none; }
.nav-toggle-icon {
  display: none;
  font-size: 1.4rem;
  color: var(--c-text);
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
}

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem 0.5rem;
  flex-wrap: wrap;
  gap: 0.25rem 0;
}
.nav-menu li a {
  color: var(--c-text-muted);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.55rem 0.9rem;
  border-radius: var(--radius);
  display: block;
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: color var(--trans), background var(--trans);
  letter-spacing: 0.03em;
}
.nav-menu li a:hover {
  color: #fff;
  background: rgba(255,0,0,0.18);
}
.nav-brand-mobile { display: none; }

/* ===== Main layout ===== */
main {
  position: relative;
  z-index: 1;
  padding-top: var(--header-h);
}

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ===== Hero ===== */
.hero-section {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding: 3rem 0 2rem;
  position: relative;
}
.hero-article {
  width: 100%;
  position: relative;
}
.hero-inner {
  display: flex;
  align-items: center;
  gap: 3rem;
}
.hero-media {
  flex: 0 0 42%;
  max-width: 42%;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--c-glass-border);
  box-shadow: 0 0 60px rgba(255,0,0,0.25);
}
.hero-media .hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
}
.hero-copy {
  flex: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.2rem;
}
.hero-eyebrow {
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--c-red);
  text-transform: uppercase;
  border: 1px solid rgba(255,0,0,0.35);
  padding: 0.3rem 1rem;
  border-radius: 2rem;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  background: rgba(255,0,0,0.08);
}
.hero-h1 {
  font-size: clamp(1.8rem, 4.5vw, 3rem);
  font-weight: 700;
  line-height: 1.3;
  background: linear-gradient(135deg, #fff 30%, var(--c-red), var(--c-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1rem;
  color: var(--c-text-muted);
  max-width: 400px;
}
.hero-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 2rem;
  background: linear-gradient(135deg, var(--c-red), var(--c-purple));
  color: #fff;
  font-weight: 700;
  border-radius: var(--radius);
  font-size: 1rem;
  letter-spacing: 0.04em;
  transition: transform var(--trans), box-shadow var(--trans);
  box-shadow: 0 4px 24px rgba(255,0,0,0.35);
}
.hero-cta:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(139,0,255,0.5);
}
.hero-bg-text {
  position: absolute;
  right: -0.5rem;
  bottom: -1.5rem;
  font-size: clamp(6rem, 18vw, 14rem);
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, rgba(255,0,0,0.08), rgba(139,0,255,0.06));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  pointer-events: none;
  user-select: none;
  letter-spacing: -0.04em;
}

/* ===== Content layout: aside + main-content ===== */
.content-layout {
  display: flex;
  gap: 2.5rem;
  padding: 3rem 0 4rem;
  align-items: flex-start;
}

/* ===== Aside / Sidebar ===== */
aside.sidebar {
  flex: 0 0 220px;
  width: 220px;
  position: sticky;
  top: calc(var(--header-h) + 1.5rem);
}
.sidebar-glass {
  background: var(--c-glass);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border: 1px solid var(--c-glass-border);
  border-radius: 8px;
  padding: 1.4rem 1.2rem;
}
.sidebar-title {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--c-red);
  margin-bottom: 1rem;
  text-transform: uppercase;
}
.sidebar-title span { display: inline-block; }
.sidebar-nav { display: flex; flex-direction: column; gap: 0.25rem; }
.sidebar-link {
  display: block;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  color: var(--c-text-muted);
  border-radius: var(--radius);
  transition: background var(--trans), color var(--trans), padding-left var(--trans);
  min-height: 40px;
  display: flex;
  align-items: center;
}
.sidebar-link:hover {
  color: #fff;
  background: rgba(255,0,0,0.15);
  padding-left: 1.1rem;
}
.sidebar-tip {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--c-glass-border);
}
.sidebar-tip-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--c-purple);
  margin-bottom: 0.5rem;
  letter-spacing: 0.08em;
}
.sidebar-tip-title span { display: inline-block; }
.sidebar-tip p {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  line-height: 1.55;
}

/* ===== Main content area ===== */
.main-content {
  flex: 1;
  min-width: 0;
}

/* ===== Section styles (content injected) ===== */
.main-content div {
  scroll-margin-top: calc(var(--header-h) + 1rem);
  margin-bottom: 3.5rem;
  padding: 2rem;
  background: var(--c-glass);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border: 1px solid var(--c-glass-border);
  border-radius: 8px;
  position: relative;
  overflow: hidden;
}
.main-content div::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-red), var(--c-purple), transparent);
}

.main-content h2 {
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  font-weight: 700;
  margin-bottom: 1.2rem;
  line-height: 1.3;
  background: linear-gradient(120deg, #fff 40%, var(--c-red));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.main-content h2 span { display: inline; }
.main-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--c-text);
  margin: 1.5rem 0 0.75rem;
}
.main-content h3 span { display: inline; }
.main-content p {
  margin-bottom: 1rem;
  color: var(--c-text);
  font-size: 1rem;
  line-height: 1.75;
}
.main-content ul, .main-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}
.main-content li {
  margin-bottom: 0.5rem;
  color: var(--c-text);
  line-height: 1.65;
}
.main-content strong { color: var(--c-red); font-weight: 600; }
.main-content a {
  color: var(--c-red);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.main-content a:hover { color: var(--c-purple); }
.main-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.2rem;
  font-size: 0.92rem;
}
.main-content th {
  background: rgba(255,0,0,0.18);
  color: #fff;
  padding: 0.6rem 0.8rem;
  text-align: left;
  border: 1px solid var(--c-glass-border);
}
.main-content td {
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--c-glass-border);
  color: var(--c-text);
}
.main-content tr:nth-child(even) td {
  background: rgba(255,255,255,0.04);
}
.main-content blockquote {
  border-left: 3px solid var(--c-purple);
  padding: 0.75rem 1.2rem;
  margin: 1.2rem 0;
  background: rgba(139,0,255,0.08);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--c-text-muted);
  font-style: italic;
}

/* Cards inside content (if any) */
.main-content .card {
  border: 1px solid var(--c-glass-border);
  border-radius: var(--radius);
  padding: 1.2rem;
  background: rgba(255,255,255,0.05);
  transition: border-color var(--trans), transform var(--trans);
}
.main-content .card:hover {
  border-color: rgba(255,0,0,0.4);
  transform: translateY(-2px);
}

/* ===== Footer ===== */
.site-footer {
  position: relative;
  z-index: 1;
  background: rgba(14,8,8,0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--c-glass-border);
  padding: 0 1.25rem 2rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto auto;
  gap: 0;
  max-width: 100%;
}
.footer-brand-block {
  grid-column: 1 / -1;
  text-align: center;
  padding: 2.5rem 1rem 1.5rem;
  overflow: hidden;
}
.footer-brand-super {
  font-size: clamp(3rem, 10vw, 7rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
  background: linear-gradient(135deg, rgba(255,0,0,0.18), rgba(139,0,255,0.12));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}
.footer-col {
  padding: 1.5rem 1.5rem 1.5rem;
  border-top: 1px solid var(--c-glass-border);
}
.footer-col:not(:last-child) {
  border-right: 1px solid var(--c-glass-border);
}
.footer-col-title {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--c-red);
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.footer-col-title span { display: inline-block; }
.footer-col p {
  font-size: 0.85rem;
  color: var(--c-text-muted);
  line-height: 1.65;
}
.footer-col ul { display: flex; flex-direction: column; gap: 0.4rem; }
.footer-col ul li a {
  font-size: 0.88rem;
  color: var(--c-text-muted);
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: color var(--trans);
}
.footer-col ul li a:hover { color: var(--c-red); }
.footer-copy {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  margin-bottom: 0.5rem;
}
.footer-disclaimer {
  font-size: 0.78rem;
  color: rgba(240,232,232,0.4);
  line-height: 1.55;
}

/* ===== Scroll reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

/* ===== Responsive: tablet ===== */
@media (max-width: 960px) {
  .hero-inner { flex-direction: column; gap: 2rem; }
  .hero-media { flex: none; max-width: 100%; width: 100%; }
  .content-layout { flex-direction: column; gap: 2rem; }
  aside.sidebar { width: 100%; position: static; }
  .site-footer {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-col:nth-child(3) { border-right: none; }
  .footer-col:nth-child(odd) { border-right: 1px solid var(--c-glass-border); }
  .footer-col:nth-child(even) { border-right: none; }
}

/* ===== Responsive: mobile ===== */
@media (max-width: 600px) {
  :root { --nav-h: 56px; --announce-h: 32px; }
  html { font-size: 16px; }

  .nav-toggle-icon { display: block; }
  .nav-summary { justify-content: flex-start; }
  .nav-brand-center { left: 50%; }

  .nav-details:not([open]) > menu { display: none; }
  .nav-details[open] > menu {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0.5rem 1rem 1rem;
    border-top: 1px solid var(--c-glass-border);
    background: rgba(14,8,8,0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
  }
  .nav-brand-mobile { display: list-item; }
  .nav-menu li a { min-height: 44px; font-size: 1rem; padding: 0.55rem 1rem; }

  .hero-section { min-height: auto; padding: 2rem 0 1.5rem; }
  .hero-bg-text { font-size: 5rem; bottom: -1rem; right: -0.5rem; }
  .hero-h1 { font-size: 1.6rem; }

  .main-content div { padding: 1.2rem 1rem; }

  .site-footer {
    grid-template-columns: 1fr;
  }
  .footer-col { border-right: none !important; }
  .footer-col:nth-child(odd),
  .footer-col:nth-child(even) { border-right: none; }

  .sidebar-glass { padding: 1rem; }
  .sidebar-nav { flex-direction: row; flex-wrap: wrap; gap: 0.4rem; }
  .sidebar-link { min-height: 40px; padding: 0.4rem 0.7rem; font-size: 0.82rem; }
}