.site-header {
  position: relative;
  z-index: 10;
  display: flex;
  width: min(100% - var(--gutter) * 2, var(--page-width));
  min-height: 5.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin-inline: auto;
  border-bottom: 1px solid var(--line);
  background: transparent;
}
.brand { display: inline-flex; align-items: center; gap: 0.85rem; }
.brand-glow-ring {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 8px;
  background: var(--surface);
  padding: 2px;
  overflow: hidden;
  box-shadow: 0 0 15px rgba(255, 215, 0, 0.25);
  transition: transform 250ms var(--ease), box-shadow 250ms var(--ease);
}
.brand-glow-ring::before {
  content: '';
  position: absolute;
  width: 200%;
  height: 200%;
  background: conic-gradient(from 0deg, #ffd700, #ffffff, #f5c518, #ffea79, #ffd700);
  animation: rotate-gradient 3s linear infinite;
  z-index: 0;
}
.brand-glow-ring::after {
  content: '';
  position: absolute;
  inset: 2px;
  border-radius: 6px;
  background: #090c0f;
  z-index: 1;
}
.brand-mark {
  position: relative;
  z-index: 2;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  color: var(--ink);
}
.brand-mark > span { color: var(--accent); }
.brand:hover .brand-glow-ring {
  transform: scale(1.08) rotate(2deg);
  box-shadow: 0 0 25px rgba(255, 215, 0, 0.6);
}
@keyframes rotate-gradient {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.brand-name, .site-nav, .language-toggle, .eyebrow, .hero-meta, .art-topline,
.section-label, .principle-index, .skill-number, .skill-status, .project-type,
.contact-top, .contact-key, .back-top, .scroll-indicator {
  font-family: var(--font-mono);
}
.brand-name { color: var(--muted); font-size: 0.68rem; letter-spacing: 0.13em; }
.site-nav { display: flex; align-items: center; gap: clamp(1rem, 2.5vw, 2.2rem); }
.nav-back-hub {
  padding: 0.35rem 0.65rem;
  border: 1px solid rgba(184, 255, 108, 0.3);
  border-radius: 4px;
  background: rgba(184, 255, 108, 0.08);
  color: var(--accent) !important;
  font-weight: 600;
  font-size: 0.74rem;
  transition: transform 180ms var(--ease), background-color 180ms var(--ease);
}
.nav-back-hub:hover {
  transform: translateX(-3px);
  background: rgba(184, 255, 108, 0.18);
}
.site-nav a { color: var(--muted); font-size: 0.76rem; transition: color 180ms var(--ease); }
.site-nav a:hover { color: var(--accent); }
.language-toggle {
  display: inline-flex;
  min-width: 4.2rem;
  justify-content: center;
  gap: 0.3rem;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.68rem;
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}
.language-toggle:hover { border-color: var(--accent); color: var(--accent); }
.language-current { color: var(--accent); }
.language-divider { color: var(--faint); }
.menu-toggle { display: none; }

.hero {
  position: relative;
  display: grid;
  min-height: min(760px, calc(100svh - 5.5rem));
  grid-template-columns: 1.04fr 0.96fr;
  align-items: center;
  gap: clamp(2rem, 6vw, 5rem);
  padding-block: 5rem 7rem;
}
.hero-content { position: relative; z-index: 1; padding-block: 1rem; }
.eyebrow { display: flex; align-items: center; gap: 0.8rem; margin-bottom: 1.6rem; color: var(--muted); font-size: 0.68rem; letter-spacing: 0.08em; }
.eyebrow-line { width: 2rem; height: 1px; background: var(--accent); }
.hero h1 { margin-bottom: 1.4rem; font-size: clamp(3.6rem, 7.5vw, 6.7rem); letter-spacing: -0.085em; }
.hero-name { color: var(--ink); white-space: nowrap; }
.accent { color: var(--accent); }
.hero-role { margin-bottom: 1.1rem; color: var(--ink); font-size: clamp(0.98rem, 1.4vw, 1.1rem); font-weight: 700; }
.role-prompt { color: var(--accent); font-family: var(--font-mono); }
.hero-description { max-width: 510px; color: var(--muted); font-size: 0.94rem; line-height: 1.9; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }
.button {
  display: inline-flex;
  min-height: 3.1rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.7rem;
  padding: 0.75rem 1rem;
  border: 1px solid transparent;
  border-radius: 3px;
  font-size: 0.77rem;
  font-weight: 800;
  transition: color 180ms var(--ease), background-color 180ms var(--ease), border-color 180ms var(--ease), transform 180ms var(--ease);
}
.button:hover { transform: translateY(-2px); }
.button:active { transform: scale(0.98); }
.button-primary { background: var(--accent); color: var(--on-accent); }
.button-primary:hover { background: var(--accent-hover); }
.button-quiet { border-color: var(--line); color: var(--ink); }
.button-quiet:hover { border-color: var(--muted); background: var(--surface); }
.hero-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 0.8rem; margin-top: 2.5rem; color: var(--faint); font-size: 0.63rem; letter-spacing: 0.04em; }
.availability { display: inline-flex; align-items: center; gap: 0.55rem; color: var(--muted); }
.availability-dot { width: 0.42rem; height: 0.42rem; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent-glow-55); }
.meta-separator { color: var(--line); }
.meta-github-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--accent);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: color 180ms var(--ease), transform 180ms var(--ease);
}
.meta-github-link:hover {
  color: var(--ink);
  transform: translateX(2px);
}
.meta-gh-icon {
  flex-shrink: 0;
}

.hero-art {
  position: relative;
  display: grid;
  min-height: 440px;
  overflow: hidden;
  place-items: center;
  border: 1px solid var(--terminal-border);
  background: linear-gradient(145deg, var(--surface-glass), var(--surface-glass-soft));
}
.art-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--art-grid-line) 1px, transparent 1px), linear-gradient(90deg, var(--art-grid-line) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(135deg, black, transparent 82%);
}
.art-topline { position: absolute; z-index: 2; top: 1.25rem; right: 1.35rem; left: 1.35rem; display: flex; justify-content: space-between; color: var(--faint); font-size: 0.59rem; letter-spacing: 0.1em; }
.hero-avatar-wrap {
  position: absolute;
  top: 46%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  display: grid;
  place-items: center;
}
.hero-avatar-glow {
  width: clamp(210px, 24vw, 260px);
}
.terminal-card { position: absolute; z-index: 3; right: 4%; bottom: 7%; width: min(75%, 315px); border: 1px solid var(--terminal-border); background: var(--terminal-glass); box-shadow: 0 18px 55px var(--black-shadow-35); }
.terminal-bar { display: flex; height: 2.15rem; align-items: center; gap: 0.35rem; padding-inline: 0.7rem; border-bottom: 1px solid var(--terminal-border); }
.terminal-bar i, .window-head > span { width: 0.4rem; height: 0.4rem; border-radius: 50%; background: var(--terminal-dot); }
.terminal-bar i:first-child { background: var(--terminal-red); }
.terminal-bar i:nth-child(2) { background: var(--terminal-yellow); }
.terminal-bar i:nth-child(3) { background: var(--terminal-green); }
.terminal-bar > span { margin-left: auto; color: var(--faint); font-family: var(--font-mono); font-size: 0.57rem; }
.terminal-code { padding: 0.7rem 0.85rem 0.85rem; font-family: var(--font-mono); font-size: clamp(0.52rem, 1vw, 0.67rem); line-height: 1.9; }
.terminal-code p { overflow: hidden; margin: 0; white-space: nowrap; }
.code-muted { color: var(--code-muted); }
.code-purple { color: var(--purple); }
.code-white { color: var(--ink); }
.code-blue { color: var(--blue); }
.code-green { color: var(--accent); }
.cursor { color: var(--accent); animation: blink 1.1s steps(2, start) infinite; }
@keyframes blink { to { visibility: hidden; } }
.art-orbit { position: absolute; width: 64%; aspect-ratio: 1; border: 1px solid var(--accent-line-15); border-radius: 50%; }
.orbit-one { transform: rotate(-27deg) scaleY(0.58); }
.orbit-two { transform: rotate(48deg) scaleY(0.58); }
.art-spark { position: absolute; top: 26%; right: 17%; color: var(--accent); font-size: 1.5rem; }
.scroll-indicator { position: absolute; bottom: 2rem; left: 0; display: flex; align-items: center; gap: 0.7rem; color: var(--faint); font-size: 0.58rem; letter-spacing: 0.12em; }
.scroll-line { width: 2rem; height: 1px; background: var(--accent); }

.ticker { overflow: hidden; padding: 0.95rem 0; border-block: 1px solid var(--accent-line-15); background: var(--accent-wash-045); }
.ticker-track { display: flex; width: max-content; align-items: center; gap: 2.3rem; animation: ticker-roll 27s linear infinite; color: var(--muted); font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.15em; }
.ticker-track i { color: var(--accent); font-size: 0.8rem; font-style: normal; }
@keyframes ticker-roll { to { transform: translateX(-50%); } }

.section-label { display: flex; gap: 0.7rem; color: var(--faint); font-size: 0.66rem; letter-spacing: 0.08em; }
.section-label > span:first-child { color: var(--accent); }
.about-content {
  max-width: 820px;
  padding-block: 1.8rem 2.8rem;
}
.about-content h2, .section-heading h2, .contact h2 {
  margin: 0 0 1.4rem 0;
  font-size: clamp(2.5rem, 5.4vw, 4.5rem);
  letter-spacing: -0.065em;
  line-height: 1.05;
}
.about-content h2 span, .section-heading h2 span, .contact h2 span { color: var(--accent); }
.about-copy p { color: var(--muted); font-size: 0.91rem; line-height: 1.9; }
.about-copy p + p { margin-top: 0.9rem; }
.text-link { display: inline-flex; align-items: center; gap: 0.9rem; margin-top: 1.5rem; padding-bottom: 0.4rem; border-bottom: 1px solid var(--line); color: var(--ink); font-size: 0.77rem; font-weight: 700; transition: color 180ms var(--ease), border-color 180ms var(--ease); }
.text-link:hover { border-color: var(--accent); color: var(--accent); }
.principle-list { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.principle { min-height: 150px; padding: 1.2rem 1.4rem 0 0; }
.principle + .principle { padding-left: 1.4rem; border-left: 1px solid var(--line); }
.principle-index { color: var(--accent); font-size: 0.63rem; }
.principle h3 { margin: 1.2rem 0 0.45rem; font-size: 0.98rem; }
.principle p { max-width: 230px; color: var(--muted); font-size: 0.76rem; line-height: 1.7; }

.hero-avatar-card {
  position: relative;
  display: grid;
  min-height: 480px;
  overflow: hidden;
  place-items: center;
  border: 1px solid var(--terminal-border);
  background: linear-gradient(145deg, var(--surface-glass), var(--surface-glass-soft));
}
/* ---------- Avatar Glow Frame (Ảnh đứng yên, viền tròn màu xoay quanh) ---------- */
.avatar-glow-wrapper {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
  width: clamp(240px, 30vw, 320px);
  aspect-ratio: 1;
  margin-bottom: 0;
}
/* Vòng hào quang phát sáng mờ bên ngoài - xoay độc lập */
.avatar-glow-ring {
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, #ffd700, #ffffff, #f5c518, #ffea79, #ffd700);
  animation: rotate-gradient 4s linear infinite;
  filter: blur(14px);
  opacity: 0.75;
  z-index: 0;
}
/* Khung tròn chứa viền xoay và ảnh đứng yên */
.avatar-image-container {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  padding: 4px;
  background: transparent;
  overflow: hidden;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.8), 0 0 20px rgba(255, 215, 0, 0.2);
  z-index: 1;
}
/* Dải viền màu xoay quanh ảnh - ĐỘC LẬP VỚI ẢNH */
.avatar-image-container::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(from 0deg, #ffd700, #ffffff, #f5c518, #ffe57f, #ffd700);
  animation: rotate-gradient 3.5s linear infinite;
  z-index: 1;
}
/* Ảnh đứng yên 100% bên trong lớp viền */
.avatar-img {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  border-radius: 50%;
  background: #07090c;
  display: block;
  /* Giữ ảnh đứng im hoàn toàn, không xoay theo viền */
  transform: none !important;
  transition: filter 300ms var(--ease);
}
.avatar-image-container:hover .avatar-img {
  filter: brightness(1.08) contrast(1.05);
}
.avatar-badge {
  position: absolute;
  z-index: 3;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  background: rgba(7, 9, 12, 0.92);
  border: 1px solid rgba(255, 215, 0, 0.5);
  backdrop-filter: blur(8px);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  white-space: nowrap;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.6), 0 0 10px rgba(255, 215, 0, 0.2);
}
.badge-dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: pulse-dot 1.8s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(0.75); }
}

/* ---------- 3D Flip Skill Cards & Progress Bars ---------- */
.skills { border-block: 1px solid var(--line); background: var(--surface-overlay); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 3rem; padding: 2.5rem 0 3rem; }
.section-heading > p { max-width: 390px; color: var(--muted); font-size: 0.87rem; line-height: 1.8; }
.section-heading > p strong { color: var(--accent); font-weight: 600; }
.skill-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }

.flip-skill-card {
  perspective: 1000px;
  min-height: 260px;
  background: transparent;
  cursor: pointer;
}
.flip-skill-inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 260px;
  transition: transform 650ms var(--ease);
  transform-style: preserve-3d;
}
.flip-skill-card:hover .flip-skill-inner,
.flip-skill-card:focus-visible .flip-skill-inner,
.flip-skill-card.is-flipped .flip-skill-inner {
  transform: rotateY(180deg);
}

.flip-skill-front,
.flip-skill-back {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--surface-transparent);
  backdrop-filter: blur(8px);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  transition: border-color 250ms var(--ease), box-shadow 250ms var(--ease);
}
.flip-skill-card:hover .flip-skill-front,
.flip-skill-card:hover .flip-skill-back {
  border-color: rgba(184, 255, 108, 0.4);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35), 0 0 20px rgba(184, 255, 108, 0.08);
}

/* Front Face */
.skill-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.skill-card-head .skill-number { color: var(--faint); font-size: 0.62rem; font-family: var(--font-mono); }
.skill-card-head .skill-status {
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  background: rgba(255, 215, 0, 0.12);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 800;
  border: 1px solid rgba(255, 215, 0, 0.25);
}
.flip-skill-front .skill-symbol {
  display: block;
  margin: 1rem 0 0.4rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
}
.flip-skill-front h3 {
  margin: 0 0 0.3rem;
  font-size: 1.1rem;
  color: var(--ink);
  font-weight: 700;
}
.flip-skill-front p {
  margin: 0;
  color: var(--muted);
  font-size: 0.74rem;
  line-height: 1.5;
}

/* Progress Bar */
.skill-progress-bar {
  width: 100%;
  height: 6px;
  margin-top: auto;
  margin-bottom: 0.75rem;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
  position: relative;
}
.skill-progress-fill {
  height: 100%;
  width: var(--skill-pct, 0%);
  border-radius: 3px;
  background: linear-gradient(90deg, #ffffff, #ffd700);
  box-shadow: 0 0 12px rgba(255, 215, 0, 0.65);
  animation: grow-progress 1.5s var(--ease) forwards;
}
@keyframes grow-progress {
  from { width: 0%; }
  to { width: var(--skill-pct); }
}
.flip-hint {
  font-family: var(--font-mono);
  font-size: 0.56rem;
  color: var(--faint);
  letter-spacing: 0.05em;
  transition: color 180ms var(--ease);
}
.flip-skill-card:hover .flip-hint { color: var(--accent); }

/* Back Face */
.flip-skill-back {
  transform: rotateY(180deg);
  background: #0f1318;
  border-color: rgba(255, 215, 0, 0.4);
  justify-content: space-between;
}
.skill-badge-mini {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}
.flip-skill-back h4 {
  margin: 0.6rem 0 0.4rem;
  font-size: 0.95rem;
  color: var(--ink);
  font-weight: 700;
}
.flip-skill-back p {
  margin: 0;
  color: var(--muted);
  font-size: 0.73rem;
  line-height: 1.6;
}
.skill-tags-mini {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.8rem 0 0;
  padding: 0;
  list-style: none;
}
.skill-tags-mini li {
  padding: 0.2rem 0.45rem;
  border-radius: 2px;
  background: rgba(255, 215, 0, 0.08);
  border: 1px solid rgba(255, 215, 0, 0.3);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.55rem;
  font-weight: 600;
}
.flip-return-hint {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 0.56rem;
  color: var(--muted);
}

.work { padding-bottom: clamp(5rem, 9vw, 7.5rem); }
/* --- Work Heading: Khac phuc triet de chu tuyen khong xuong dong --- */
.section-heading.work-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 2rem;
  padding-bottom: 2.5rem;
}

#work-title,
.section-heading.work-heading h2 {
  margin: 0;
  font-size: clamp(2rem, 3.6vw, 3.6rem) !important;
  letter-spacing: -0.055em;
  line-height: 1.1;
}

#work-title span,
.section-heading.work-heading h2 span {
  color: var(--accent);
  display: inline-block;
  white-space: nowrap;
}

.no-orphan {
  white-space: nowrap;
}

.section-heading.work-heading > p {
  max-width: 350px;
  margin-bottom: 0.35rem;
}

@media (max-width: 900px) {
  .section-heading.work-heading {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  #work-title,
  .section-heading.work-heading h2 {
    font-size: clamp(1.45rem, 5.8vw, 2.5rem) !important;
    letter-spacing: -0.045em;
  }
  .section-heading.work-heading > p {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  #work-title,
  .section-heading.work-heading h2 {
    font-size: clamp(1.3rem, 5.3vw, 1.6rem) !important;
    letter-spacing: -0.04em;
  }
  #work-title span,
  .section-heading.work-heading h2 span {
    white-space: nowrap;
  }
}

.portfolio-project {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: clamp(2rem, 5vw, 4rem);
  padding: clamp(1.2rem, 4vw, 2.6rem);
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(120deg, var(--project-glass), var(--project-glass-soft));
  transition: border-color 0.45s ease, box-shadow 0.45s ease, transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}
.portfolio-project:hover {
  border-color: rgba(255, 215, 0, 0.45);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.55), 0 0 30px rgba(255, 215, 0, 0.08);
}
.project-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  overflow: visible;
  perspective: 1000px;
}

/* 3D Tech Artwork Banner Container */
.project-banner-card {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9.2;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255, 215, 0, 0.22);
  background: #07090c;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.65), inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  transform: perspective(1000px) rotateX(1.5deg) rotateY(-1.8deg) translateZ(0);
  transition: transform 0.65s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.65s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.45s ease;
  will-change: transform, box-shadow;
}
.portfolio-project:hover .project-banner-card {
  transform: perspective(1000px) rotateX(0deg) rotateY(0deg) translateY(-5px) scale(1.025);
  border-color: rgba(255, 215, 0, 0.75);
  box-shadow: 0 26px 65px rgba(0, 0, 0, 0.75), 0 0 40px rgba(255, 215, 0, 0.28), 0 0 80px rgba(255, 215, 0, 0.12);
}

.project-banner-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.002);
  filter: brightness(0.96) contrast(1.04);
  transition: transform 0.75s cubic-bezier(0.16, 1, 0.3, 1), filter 0.5s ease;
}
.portfolio-project:hover .project-banner-img {
  transform: scale(1.045);
  filter: brightness(1.04) contrast(1.08);
}

.banner-glass-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(7, 9, 12, 0.08) 0%, transparent 45%, rgba(7, 9, 12, 0.65) 100%);
  mix-blend-mode: multiply;
  transition: opacity 0.4s ease;
}
.portfolio-project:hover .banner-glass-overlay {
  opacity: 0.5;
}

.banner-glow-border {
  position: absolute;
  inset: 0;
  z-index: 3;
  border-radius: inherit;
  pointer-events: none;
  border: 1px solid transparent;
  box-shadow: inset 0 0 25px rgba(255, 215, 0, 0);
  transition: box-shadow 0.5s ease, border-color 0.45s ease;
}
.portfolio-project:hover .banner-glow-border {
  border-color: rgba(255, 215, 0, 0.6);
  box-shadow: inset 0 0 30px rgba(255, 215, 0, 0.18);
}

.banner-floating-badge {
  position: absolute;
  left: 0.9rem;
  bottom: 0.9rem;
  z-index: 4;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: rgba(9, 12, 18, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 215, 0, 0.35);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.55);
  color: #ffd700;
  font-family: var(--font-mono, 'DM Mono', monospace);
  font-size: 0.54rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  transform: translateY(0);
  transition: transform 0.4s ease, border-color 0.4s ease, background 0.4s ease, box-shadow 0.4s ease;
}
.portfolio-project:hover .banner-floating-badge {
  transform: translateY(-2px);
  border-color: rgba(255, 215, 0, 0.85);
  background: rgba(9, 12, 18, 0.94);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.65), 0 0 18px rgba(255, 215, 0, 0.3);
}
.badge-pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #ffd700;
  box-shadow: 0 0 8px #ffd700;
  animation: badgePulse 2s infinite ease-in-out;
}
@keyframes badgePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.85); }
}

.project-window { position: relative; width: 83%; max-width: 430px; overflow: hidden; transform: rotate(-3deg); border: 1px solid var(--preview-window-border); background: var(--preview-window-bg); box-shadow: 0 22px 55px var(--black-shadow-45); }
.window-head { display: flex; height: 2rem; align-items: center; gap: 0.35rem; padding-inline: 0.7rem; border-bottom: 1px solid var(--preview-window-line); }
.window-head > span:first-child { background: var(--terminal-red); }
.window-head > span:nth-child(2) { background: var(--terminal-yellow); }
.window-head > span:nth-child(3) { background: var(--terminal-green); }
.window-head b { margin-left: auto; color: var(--preview-window-muted); font-family: var(--font-mono); font-size: 0.48rem; font-weight: 400; letter-spacing: 0.08em; }
.window-body { position: relative; min-height: 225px; padding: 1.5rem; }
.window-kicker { display: block; color: var(--accent); font-family: var(--font-mono); font-size: 0.48rem; letter-spacing: 0.15em; }
.window-title { display: block; margin-top: 1rem; font-size: clamp(1.7rem, 4vw, 2.6rem); font-weight: 800; letter-spacing: -0.08em; line-height: 0.99; }
.window-title em { color: var(--accent); font-style: normal; }
.window-button { display: block; width: 76px; height: 19px; margin-top: 1.3rem; background: var(--accent); }
.window-shape { position: absolute; right: 5%; bottom: -32%; width: 46%; aspect-ratio: 1; border: 1px solid var(--accent-glow-65); border-radius: 50%; box-shadow: 0 0 0 18px var(--accent-halo-035), 0 0 0 38px var(--accent-halo-025); }
.project-type { color: var(--accent); font-size: 0.57rem; letter-spacing: 0.1em; }
.project-caption h3 { margin: 0.8rem 0 0.75rem; font-size: clamp(1.4rem, 2.5vw, 1.9rem); letter-spacing: -0.04em; }
.project-caption > p { color: var(--muted); font-size: 0.83rem; line-height: 1.8; }
.tag-list { display: flex; flex-wrap: wrap; gap: 0.45rem; margin: 1.3rem 0 0; padding: 0; list-style: none; }
.tag-list li { padding: 0.35rem 0.6rem; border: 1px solid var(--line); color: var(--tag-ink); font-family: var(--font-mono); font-size: 0.58rem; }

.contact {
  position: relative;
  overflow: hidden;
  padding-block: clamp(3rem, 6vw, 4.8rem);
  padding-inline: clamp(1.8rem, 4vw, 3.5rem);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: radial-gradient(ellipse at 81% 50%, var(--accent-wash-09), transparent 52%), var(--surface);
  box-shadow: 0 16px 45px rgba(0, 0, 0, 0.4);
}
.contact-top {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.65rem;
  letter-spacing: 0.09em;
}
.contact h2 {
  position: relative;
  z-index: 1;
  margin-top: 3.5rem;
  font-size: clamp(3rem, 7vw, 5.4rem);
  letter-spacing: -0.05em;
}
.contact-intro {
  position: relative;
  z-index: 1;
  max-width: 540px;
  margin-top: 1.2rem;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.85;
}
.contact-cta {
  position: relative;
  z-index: 1;
  margin-top: 2rem;
}
.contact-links {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 4.5rem;
  padding-top: 1.8rem;
  border-top: 1px solid var(--line);
}
.contact-links a {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  min-width: 0;
  color: var(--ink);
  font-size: 0.8rem;
  overflow-wrap: anywhere;
  transition: transform 180ms var(--ease);
}
.contact-links a:hover {
  transform: translateY(-2px);
}
.contact-links a > span:nth-child(2) {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
}
.contact-links a > span:last-child {
  align-self: flex-start;
  color: var(--accent);
  font-size: 0.85rem;
}
.contact-links a:hover > span:nth-child(2) {
  color: var(--accent);
}
.contact-key {
  color: var(--faint);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
}
.contact-decoration {
  position: absolute;
  right: -2rem;
  bottom: -9rem;
  color: var(--contact-decoration);
  font-size: 26rem;
  line-height: 1;
  pointer-events: none;
}

.site-footer { display: grid; grid-template-columns: 1fr 0.8fr 1.2fr; gap: 3rem; padding-block: 2.5rem; }
.footer-group { align-self: center; }
.footer-group-name { margin-top: 0.8rem; color: var(--muted); font-size: 0.72rem; }
.footer-copy { margin-top: 0.35rem; color: var(--faint); font-size: 0.65rem; }
.footer-nav { display: grid; justify-items: start; gap: 0.45rem; }
.footer-heading { margin: 0 0 0.45rem; color: var(--faint); font-family: var(--font-mono); font-size: 0.6rem; font-weight: 400; letter-spacing: 0.08em; }
.footer-nav a { color: var(--muted); font-size: 0.72rem; transition: color 180ms var(--ease); }
.footer-nav a:hover { color: var(--accent); }
.footer-signup { align-self: center; }
.newsletter-form { display: flex; min-height: 2.8rem; border: 1px solid var(--line); }
.newsletter-form:focus-within { border-color: var(--accent); }
.newsletter-form input { width: 100%; min-width: 0; padding: 0.65rem 0.8rem; border: 0; outline: 0; background: transparent; color: var(--ink); font: inherit; font-size: 0.72rem; }
.newsletter-form input::placeholder { color: var(--faint); }
.newsletter-form button { padding-inline: 0.9rem; border: 0; background: var(--accent); color: var(--on-accent); cursor: pointer; font-size: 0.7rem; font-weight: 800; }
.newsletter-note { margin-top: 0.55rem; color: var(--faint); font-size: 0.62rem; }

@media (max-width: 900px) {
  .hero { min-height: auto; grid-template-columns: 1fr 0.85fr; gap: 2rem; padding-block: 4.5rem 6.5rem; }
  .hero-art { min-height: 370px; }
  .hero h1 { font-size: clamp(3.4rem, 7vw, 5rem); }
  .about-layout { gap: 2.5rem; }
  .section-heading { align-items: start; flex-direction: column; gap: 1.2rem; }
  .skill-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  :root { --gutter: 1.2rem; }
  html { scroll-padding-top: 5rem; }
  .site-header { min-height: 4.6rem; gap: 0.65rem; }
  .brand { margin-right: auto; }
  .brand-name { display: none; }
  .menu-toggle { display: grid; width: 2.55rem; aspect-ratio: 1; align-content: center; justify-items: center; gap: 5px; border: 1px solid var(--line); border-radius: 3px; background: var(--surface); cursor: pointer; }
  .menu-toggle span { width: 0.95rem; height: 1px; background: var(--ink); transition: transform 180ms var(--ease); }
  .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3px) rotate(-45deg); }
  .site-nav { position: fixed; z-index: 11; top: 4.6rem; right: 0; bottom: 0; display: flex; width: min(21rem, 86vw); flex-direction: column; align-items: stretch; gap: 0; padding: 0 1.4rem; clip-path: inset(0 0 0 100%); border-left: 1px solid var(--line); background: var(--bg); box-shadow: -1.5rem 0 3rem var(--black-shadow-28); opacity: 0; visibility: hidden; transition: clip-path 320ms var(--ease), opacity 220ms var(--ease), visibility 0s linear 320ms; }
  .site-nav.is-open { padding-block: 1.25rem; clip-path: inset(0); opacity: 1; visibility: visible; transition-delay: 0s; }
  .site-nav a { padding: 0.7rem 0; border-bottom: 1px solid var(--accent-grid-muted); }
  .site-nav a:last-child { border-bottom: 0; }
  .language-toggle { min-width: 3.8rem; padding-inline: 0.45rem; }
  .hero { grid-template-columns: 1fr; gap: 2.3rem; padding-block: 3.5rem 5rem; }
  .hero h1 { font-size: clamp(3.6rem, 15vw, 5.4rem); }
  .hero-description { font-size: 0.87rem; }
  .hero-meta { margin-top: 1.8rem; }
  .hero-art { min-height: min(102vw, 410px); }
  .monogram-wrap { top: 10%; }
  .monogram { font-size: clamp(7rem, 31vw, 10rem); }
  .monogram-shadow { font-size: clamp(7.5rem, 33vw, 10.5rem); }
  .terminal-card { right: 4%; bottom: 6%; }
  .scroll-indicator { bottom: 1.8rem; }
  .ticker-track { gap: 1.5rem; }
  .about-layout { grid-template-columns: 1fr; gap: 1.5rem; padding-block: 2.2rem 3rem; }
  .about-layout h2, .section-heading h2 { font-size: clamp(2.5rem, 10vw, 3.8rem); }
  .principle-list { grid-template-columns: 1fr; }
  .principle, .principle + .principle { min-height: auto; padding: 1.1rem 0; border-left: 0; }
  .principle + .principle { border-top: 1px solid var(--line); }
  .principle h3 { margin-top: 0.55rem; }
  .skill-grid { grid-template-columns: 1fr; gap: 0.9rem; }
  .flip-skill-card { min-height: 230px; }
  .flip-skill-inner { min-height: 230px; }
  .flip-skill-front, .flip-skill-back { padding: 1.1rem; }
  .flip-skill-front h3 { font-size: 1.05rem; }
  .portfolio-project { grid-template-columns: 1fr; gap: 1.5rem; padding: 1rem; }
  .project-visual { min-height: 270px; }
  .contact { width: 100%; padding: 2.2rem 1.4rem; }
  .contact-top { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .contact h2 { margin-top: 3.2rem; font-size: clamp(3rem, 12vw, 4.5rem); }
  .contact-links { grid-template-columns: 1fr; gap: 0; margin-top: 2.8rem; }
  .contact-links a { padding-block: 0.9rem; border-bottom: 1px solid var(--line); }
  .contact-links a:last-child { border-bottom: 0; }
  .site-footer { grid-template-columns: 1fr 1fr; gap: 2rem 1.2rem; padding-block: 2rem; }
  .footer-signup { grid-column: 1 / -1; }
}

@media (max-width: 370px) {
  .hero h1 { font-size: 3.3rem; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .button { width: 100%; }
  .flip-skill-card { min-height: 220px; }
  .flip-skill-inner { min-height: 220px; }
}

@media (max-width: 420px) {
  .site-footer { grid-template-columns: 1fr; }
  .footer-signup { grid-column: auto; }
}

/* ===================================================================== */
/* FLOATING BACKGROUND MUSIC TOGGLE                                      */
/* ===================================================================== */
.music-toggle {
  position: fixed;
  z-index: 99;
  bottom: 1.5rem;
  right: 1.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 9999px;
  background: rgba(14, 18, 23, 0.88);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  transition:
    border-color 220ms var(--ease),
    color 220ms var(--ease),
    box-shadow 220ms var(--ease),
    transform 220ms var(--ease);
  user-select: none;
}

.music-toggle:hover {
  border-color: var(--accent);
  color: var(--ink);
  transform: translateY(-2px);
}

.music-toggle:active {
  transform: translateY(0);
}

.music-toggle.is-playing {
  border-color: rgba(255, 215, 0, 0.5);
  color: var(--accent);
  box-shadow:
    0 0 16px rgba(255, 215, 0, 0.25),
    0 4px 20px rgba(0, 0, 0, 0.45);
}

.music-bars {
  display: inline-flex;
  align-items: flex-end;
  gap: 2.5px;
  width: 13px;
  height: 13px;
}

.music-bar {
  flex: 1;
  height: 100%;
  background: currentColor;
  border-radius: 1px;
  transform-origin: bottom;
  transform: scaleY(0.28);
  transition: transform 180ms ease;
}

.music-toggle.is-playing .music-bar:nth-child(1) {
  animation: eq-pulse-1 0.85s ease-in-out infinite;
}

.music-toggle.is-playing .music-bar:nth-child(2) {
  animation: eq-pulse-2 0.7s ease-in-out infinite 0.15s;
}

.music-toggle.is-playing .music-bar:nth-child(3) {
  animation: eq-pulse-3 0.95s ease-in-out infinite 0.3s;
}

@keyframes eq-pulse-1 {
  0%, 100% { transform: scaleY(0.3); }
  50% { transform: scaleY(1); }
}

@keyframes eq-pulse-2 {
  0%, 100% { transform: scaleY(0.85); }
  50% { transform: scaleY(0.25); }
}

@keyframes eq-pulse-3 {
  0%, 100% { transform: scaleY(0.35); }
  50% { transform: scaleY(0.9); }
}

@media (max-width: 768px) {
  .music-toggle {
    bottom: 1rem;
    right: 1rem;
    padding: 0.4rem 0.75rem;
    font-size: 0.68rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .music-toggle.is-playing .music-bar {
    animation: none;
    transform: scaleY(0.7);
  }
}

/* ===================================================================== */
/* AI ASSISTANT CHATBOX (Cyberpunk Terminal & Local RAG)                 */
/* ===================================================================== */

/* Toggle Button — ngay TREN nut music (bottom: 4.8rem) */
.ai-chat-toggle {
  position: fixed;
  z-index: 98;
  bottom: 4.8rem;
  right: 1.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.42rem 0.85rem;
  border: 1px solid rgba(255, 215, 0, 0.35);
  border-radius: 9999px;
  background: rgba(10, 14, 20, 0.92);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(0,0,0,0.4), 0 0 14px rgba(255,215,0,0.15);
  transition: border-color 220ms, box-shadow 220ms, transform 200ms var(--ease);
  user-select: none;
}

.ai-chat-toggle:hover {
  border-color: rgba(255,215,0,0.8);
  box-shadow: 0 0 24px rgba(255,215,0,0.35), 0 6px 22px rgba(0,0,0,0.5);
  transform: translateY(-2px);
}

.ai-chat-toggle[aria-expanded="true"] {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(14, 20, 28, 0.96);
  box-shadow: 0 0 20px rgba(255,215,0,0.3);
}

.ai-toggle-icon {
  font-size: 0.9rem;
  animation: aiLogoGlow 2.5s ease-in-out infinite;
}

@keyframes aiLogoGlow {
  0%, 100% { color: #ffd700; text-shadow: 0 0 10px rgba(255, 215, 0, 0.8); }
  50% { color: #00f0ff; text-shadow: 0 0 12px rgba(0, 240, 255, 0.8); }
}

/* Chat Window: Cyberpunk Terminal Style */
.ai-chat-window {
  position: fixed;
  z-index: 97;
  bottom: 9.4rem;
  right: 1.5rem;
  width: 380px;
  max-height: 520px;
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(255, 215, 0, 0.28);
  border-radius: 14px;
  background: rgba(8, 11, 16, 0.96);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  box-shadow:
    0 0 0 1px rgba(255, 215, 0, 0.12),
    0 24px 65px rgba(0, 0, 0, 0.85),
    0 0 45px rgba(255, 215, 0, 0.12);
  overflow: hidden;
  transform-origin: bottom right;
  transform: scale(0.92) translateY(14px);
  opacity: 0;
  pointer-events: none;
  transition: transform 240ms cubic-bezier(0.16, 1, 0.3, 1), opacity 240ms ease;
}

.ai-chat-window.is-open {
  transform: scale(1) translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.ai-chat-window[hidden] {
  display: flex !important;
  visibility: hidden;
}

/* Scanline Effect */
.ai-terminal-scanline {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.22),
    rgba(0, 0, 0, 0.22) 1px,
    transparent 1px,
    transparent 2px
  );
  z-index: 6;
  opacity: 0.5;
}

/* Header */
.ai-chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(255, 215, 0, 0.15);
  background: rgba(12, 16, 23, 0.95);
  position: relative;
  z-index: 7;
  flex-shrink: 0;
}

.ai-header-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ai-chat-logo {
  font-size: 1.05rem;
  animation: aiLogoGlow 2.5s ease-in-out infinite;
}

.ai-chat-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.05em;
}

.ai-online-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #27c93f;
  box-shadow: 0 0 8px #27c93f, 0 0 12px rgba(39, 201, 63, 0.4);
  animation: ai-pulse 2s ease-in-out infinite;
  display: inline-block;
}

.ai-header-right {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.ai-chat-reset, .ai-chat-close {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--muted);
  font-size: 0.72rem;
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  display: grid;
  place-items: center;
  transition: all 150ms ease;
}

.ai-chat-reset:hover {
  color: #ffd700;
  border-color: rgba(255, 215, 0, 0.5);
  background: rgba(255, 215, 0, 0.1);
}

.ai-chat-close:hover {
  color: #ff5f56;
  border-color: rgba(255, 95, 86, 0.5);
  background: rgba(255, 95, 86, 0.1);
}

/* Chat Body (Terminal Log Container) */
.ai-chat-body {
  flex: 1;
  overflow-y: auto;
  padding: 0.9rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  position: relative;
  z-index: 5;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 215, 0, 0.2) transparent;
}

/* Message Blocks (Hacker/Terminal Log Cards) */
.ai-msg-block {
  width: 100%;
  border-radius: 8px;
  padding: 0.65rem 0.8rem;
  border: 1px solid rgba(255, 215, 0, 0.18);
  background: rgba(14, 18, 25, 0.88);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  animation: aiFadeIn 200ms ease-out forwards;
}

@keyframes aiFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.ai-msg-block.bot {
  border-left: 3px solid #ffd700;
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.05) 0%, rgba(10, 14, 20, 0.9) 100%);
}

.ai-msg-block.user {
  border-left: 3px solid #00f0ff;
  border-color: rgba(0, 240, 255, 0.25);
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.06) 0%, rgba(10, 14, 20, 0.9) 100%);
}

.ai-msg-meta {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.55rem;
}

.ai-avatar-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.12rem 0.45rem;
  border-radius: 4px;
  background: rgba(255, 215, 0, 0.18);
  border: 1px solid rgba(255, 215, 0, 0.45);
  color: #ffd700;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.user-avatar-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.12rem 0.45rem;
  border-radius: 4px;
  background: rgba(0, 240, 255, 0.18);
  border: 1px solid rgba(0, 240, 255, 0.45);
  color: #00f0ff;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.ai-msg-tag {
  color: var(--muted);
  font-size: 0.52rem;
  letter-spacing: 0.08em;
}

.ai-msg-content {
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--ink);
  word-break: break-word;
}

.ai-msg-content p {
  margin: 0 0 0.4rem 0;
}
.ai-msg-content p:last-child {
  margin-bottom: 0;
}

.ai-highlight {
  color: #ffd700;
  font-weight: 600;
  background: rgba(255, 215, 0, 0.1);
  padding: 0.05rem 0.25rem;
  border-radius: 3px;
  border: 1px solid rgba(255, 215, 0, 0.2);
}

.ai-link {
  color: #00f0ff;
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 500;
}
.ai-link:hover {
  color: #ffd700;
}

/* Scanning / Analyzing Phase Terminal Logs */
.ai-scanning-box {
  padding: 0.55rem 0.75rem;
  border-radius: 6px;
  background: rgba(6, 9, 13, 0.95);
  border: 1px dashed rgba(255, 215, 0, 0.3);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  animation: aiFadeIn 180ms ease-out;
}

.ai-scan-line {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--muted);
}

.ai-scan-tag {
  color: #00f0ff;
  font-weight: 600;
}

.ai-scan-tag.success {
  color: #ffd700;
}

/* Typing Indicator */
.ai-typing-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: #ffd700;
  padding: 0.3rem 0.5rem;
}

.typing-dot {
  animation: typingBlink 1.4s infinite ease-in-out;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBlink {
  0%, 100% { opacity: 0.2; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.15); }
}

/* Quick Prompts */
.ai-quick-prompts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0.55rem 0.85rem;
  border-top: 1px solid rgba(255, 215, 0, 0.1);
  background: rgba(10, 14, 20, 0.9);
  position: relative;
  z-index: 7;
  flex-shrink: 0;
}

.ai-quick-btn {
  padding: 0.28rem 0.65rem;
  border: 1px solid rgba(255, 215, 0, 0.18);
  border-radius: 4px;
  background: rgba(255, 215, 0, 0.04);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, color 180ms ease, background 180ms ease, box-shadow 180ms ease;
  white-space: nowrap;
}

.ai-quick-btn:hover {
  transform: translateX(4px);
  border-color: rgba(255, 215, 0, 0.7);
  color: #ffd700;
  background: rgba(255, 215, 0, 0.12);
  box-shadow: 0 0 12px rgba(255, 215, 0, 0.25);
}

/* Input Row */
.ai-chat-input-row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.65rem 0.85rem;
  border-top: 1px solid rgba(255, 215, 0, 0.15);
  background: rgba(12, 16, 23, 0.95);
  position: relative;
  z-index: 7;
  flex-shrink: 0;
}

.ai-input-prompt {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: #ffd700;
  user-select: none;
}

.ai-chat-input {
  flex: 1;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 215, 0, 0.2);
  border-radius: 6px;
  padding: 0.45rem 0.65rem;
  outline: none;
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  caret-color: #ffd700;
  transition: border-color 180ms ease, box-shadow 180ms ease;
  min-width: 0;
}

.ai-chat-input:focus {
  border-color: rgba(255, 215, 0, 0.65);
  box-shadow: 0 0 12px rgba(255, 215, 0, 0.2);
}

.ai-chat-input::placeholder {
  color: rgba(166, 177, 187, 0.45);
}

.ai-chat-send {
  flex-shrink: 0;
  width: 2.1rem;
  height: 2.1rem;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 215, 0, 0.45);
  border-radius: 6px;
  background: rgba(255, 215, 0, 0.12);
  color: #ffd700;
  font-size: 0.95rem;
  cursor: pointer;
  text-shadow: 0 0 8px #ffd700;
  transition: background 160ms, border-color 160ms, transform 160ms;
}

.ai-chat-send:hover {
  background: rgba(255, 215, 0, 0.25);
  border-color: #ffd700;
  transform: scale(1.05);
}

/* Mobile adjustments */
@media (max-width: 768px) {
  .ai-chat-toggle { bottom: 4.2rem; right: 1rem; }
  .ai-chat-window { bottom: 8.8rem; right: 1rem; width: calc(100vw - 2rem); max-width: 360px; max-height: 480px; }
}

@media (prefers-reduced-motion: reduce) {
  .ai-toggle-icon { animation: none; }
  .ai-online-dot { animation: none; }
  .ai-chat-window { transition: none; }
  .ai-quick-btn:hover { transform: none; }
}

/* Mobile adjustments */
@media (max-width: 768px) {
  .about-layout { grid-template-columns: 1fr; gap: 2.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  .ai-toggle-icon { animation: none; }
  .ai-online-dot { animation: none; }
  .ai-chat-window { transition: none; }
}