/* Profile — Trần Duy Thức (premium dark portfolio) */
:root {
  --pf-bg: #070b14;
  --pf-bg-elevated: #0b1120;
  --pf-bg-glow: rgba(99, 102, 241, 0.18);
  --pf-surface: #121a2e;
  --pf-surface-raised: #1a2438;
  --pf-glass: rgba(22, 29, 47, 0.72);
  --pf-text: #f1f5f9;
  --pf-muted: #94a3b8;
  --pf-muted-soft: #64748b;
  --pf-border: rgba(148, 163, 184, 0.12);
  --pf-border-hover: rgba(45, 212, 191, 0.5);
  --pf-primary: #2dd4bf;
  --pf-primary-dark: #14b8a6;
  --pf-accent: #38bdf8;
  --pf-accent-soft: rgba(45, 212, 191, 0.14);
  --pf-violet: #818cf8;
  --pf-blue-soft: rgba(59, 130, 246, 0.16);
  --pf-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --pf-shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.5);
  --pf-shadow-glow: 0 0 48px rgba(45, 212, 191, 0.12);
  --pf-radius: 16px;
  --pf-radius-lg: 22px;
  --pf-max: 1120px;
  --pf-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --pf-gradient-hero: linear-gradient(135deg, #1e1b4b 0%, #1e3a8a 42%, #0e7490 100%);
  --pf-font-display: 'Roboto', system-ui, -apple-system, sans-serif;
  --pf-font-body: 'Roboto', system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

html.pf-profile-html {
  font-family: var(--pf-font-body);
}

body.pf-page {
  margin: 0;
  font-family: var(--pf-font-body);
  font-size: 15px;
  line-height: 1.65;
  color: var(--pf-text);
  background: var(--pf-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Ambient background */
.pf-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.pf-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 0%, black 20%, transparent 75%);
}

.pf-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  animation: pfOrbFloat 18s var(--pf-ease) infinite alternate;
}

.pf-orb--1 {
  width: 420px;
  height: 420px;
  top: -120px;
  left: -80px;
  background: rgba(99, 102, 241, 0.35);
}

.pf-orb--2 {
  width: 320px;
  height: 320px;
  top: 8%;
  right: -60px;
  background: rgba(14, 165, 233, 0.28);
  animation-delay: -6s;
}

.pf-orb--3 {
  width: 280px;
  height: 280px;
  bottom: 20%;
  left: 30%;
  background: rgba(45, 212, 191, 0.2);
  animation-delay: -12s;
}

@keyframes pfOrbFloat {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(24px, -18px) scale(1.06); }
}

.pf-wrap {
  position: relative;
  z-index: 1;
  max-width: var(--pf-max);
  margin: 0 auto;
  padding: 0 24px 72px;
}

/* Hero */
.pf-hero {
  position: relative;
  padding: 56px 0 44px;
  margin-bottom: 8px;
}

.pf-hero-card {
  position: relative;
  padding: 36px 40px;
  border-radius: var(--pf-radius-lg);
  background: var(--pf-gradient-hero);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--pf-shadow-lg), var(--pf-shadow-glow);
  overflow: hidden;
}

.pf-hero-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 85% 15%, rgba(45, 212, 191, 0.25) 0%, transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(129, 140, 248, 0.2) 0%, transparent 40%);
  pointer-events: none;
}

.pf-hero-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
}

.pf-hero-shine {
  position: absolute;
  inset: -50%;
  background: conic-gradient(from 0deg at 50% 50%, transparent 0deg, rgba(255, 255, 255, 0.06) 60deg, transparent 120deg);
  animation: pfHeroShine 12s linear infinite;
  pointer-events: none;
}

@keyframes pfHeroShine {
  to { transform: rotate(360deg); }
}

.pf-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 32px 40px;
  align-items: center;
}

@media (max-width: 720px) {
  .pf-hero-card {
    padding: 28px 22px;
  }

  .pf-hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    justify-items: center;
  }
}

.pf-photo-wrap {
  position: relative;
  animation: pfFadeUp 0.8s var(--pf-ease) both;
}

.pf-photo-wrap::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--pf-primary), var(--pf-violet), var(--pf-accent));
  z-index: 0;
  animation: pfBorderGlow 4s ease-in-out infinite alternate;
}

@keyframes pfBorderGlow {
  from { opacity: 0.65; filter: blur(0); }
  to { opacity: 1; filter: blur(1px); }
}

.pf-photo {
  position: relative;
  z-index: 1;
  width: 168px;
  height: 168px;
  border-radius: 20px;
  object-fit: cover;
  object-position: center top;
  border: 3px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
  background: var(--pf-surface);
  transition: transform 0.4s var(--pf-ease);
}

.pf-photo-wrap:hover .pf-photo {
  transform: scale(1.02) rotate(-0.5deg);
}

.pf-hero-text {
  animation: pfFadeUp 0.8s var(--pf-ease) 0.1s both;
}

.pf-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  padding: 6px 14px 6px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #ecfdf5;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(45, 212, 191, 0.35);
  backdrop-filter: blur(8px);
}

.pf-hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--pf-primary);
  box-shadow: 0 0 12px var(--pf-primary);
  animation: pfPulse 2s ease-in-out infinite;
}

@keyframes pfPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(0.85); }
}

.pf-hero-text h1 {
  margin: 0 0 8px;
  font-family: var(--pf-font-display);
  font-size: clamp(1.85rem, 4.5vw, 2.5rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.pf-hero-text .pf-tagline {
  margin: 0 0 14px;
  font-size: 1.02rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.92);
  line-height: 1.5;
}

.pf-role-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

@media (max-width: 720px) {
  .pf-role-chips {
    justify-content: center;
  }
}

.pf-role-chip {
  padding: 5px 12px;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  color: #e0f2fe;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(4px);
  transition: background 0.2s, transform 0.2s;
}

.pf-role-chip:hover {
  background: rgba(45, 212, 191, 0.2);
  transform: translateY(-1px);
}

.pf-hero-text .pf-org {
  margin: 0 0 20px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.5;
}

.pf-org-address {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.65);
}

.pf-contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (max-width: 720px) {
  .pf-contact-row {
    justify-content: center;
  }
}

.pf-contact-row a,
.pf-contact-row span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 12px;
  font-size: 0.84rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--pf-text);
  background: rgba(11, 17, 32, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  transition: border-color 0.25s, transform 0.25s var(--pf-ease), box-shadow 0.25s;
}

.pf-contact-row a:hover {
  border-color: var(--pf-border-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.pf-contact-row svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--pf-primary);
}

/* Tabs */
.pf-tabs {
  position: sticky;
  top: 0;
  z-index: 50;
  margin: 0 -24px 32px;
  padding: 12px 24px 0;
  background: rgba(7, 11, 20, 0.88);
  backdrop-filter: blur(16px) saturate(1.2);
  border-bottom: 1px solid var(--pf-border);
}

.pf-tabs-inner {
  position: relative;
  max-width: var(--pf-max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: center;
  padding-bottom: 2px;
}

.pf-tab-indicator {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--pf-violet), var(--pf-primary));
  box-shadow: 0 0 12px rgba(45, 212, 191, 0.6);
  transition: transform 0.35s var(--pf-ease), width 0.35s var(--pf-ease), opacity 0.2s;
  opacity: 0;
  pointer-events: none;
}

.pf-tab-btn {
  position: relative;
  z-index: 1;
  padding: 12px 18px;
  border: 0;
  border-radius: 10px;
  font-family: inherit;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--pf-muted);
  background: transparent;
  cursor: pointer;
  transition: color 0.25s, background 0.25s;
}

.pf-tab-btn:hover {
  color: var(--pf-primary);
  background: var(--pf-accent-soft);
}

.pf-tab-btn.is-active {
  color: var(--pf-primary);
  background: rgba(45, 212, 191, 0.08);
}

/* Tab panels */
.pf-tab-panel {
  display: none;
}

.pf-tab-panel.is-active {
  display: block;
}

.pf-tab-panel.is-entering {
  animation: pfTabIn 0.45s var(--pf-ease) both;
}

@keyframes pfTabIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pfFadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Scroll reveal */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.65s var(--pf-ease) var(--reveal-delay, 0ms),
    transform 0.65s var(--pf-ease) var(--reveal-delay, 0ms);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Section headers */
.pf-section {
  margin-bottom: 48px;
}

.pf-section-head {
  margin-bottom: 28px;
}

.pf-section-eyebrow {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--pf-primary);
}

.pf-section h2 {
  margin: 0 0 10px;
  font-family: var(--pf-font-display);
  font-size: clamp(1.35rem, 3vw, 1.55rem);
  font-weight: 800;
  color: var(--pf-text);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 12px;
}

.pf-section h2::before {
  content: '';
  width: 4px;
  height: 1.15em;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--pf-violet), var(--pf-primary));
  box-shadow: 0 0 12px rgba(45, 212, 191, 0.4);
}

.pf-section-intro {
  margin: 0;
  font-size: 0.96rem;
  color: var(--pf-muted);
  line-height: 1.65;
  max-width: 680px;
}

.pf-card {
  background: var(--pf-glass);
  border: 1px solid var(--pf-border);
  border-radius: var(--pf-radius);
  padding: 28px 32px;
  box-shadow: var(--pf-shadow);
  backdrop-filter: blur(12px);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.pf-card:hover {
  border-color: rgba(45, 212, 191, 0.2);
  box-shadow: var(--pf-shadow), var(--pf-shadow-glow);
}

.pf-lead {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--pf-muted);
}

.pf-lead + .pf-lead {
  margin-top: 1.1rem;
}

.pf-lead strong {
  color: var(--pf-text);
  font-weight: 600;
}

.pf-lead-strength {
  display: block;
  margin-top: 1rem;
  padding: 0.9rem 1.1rem;
  border-radius: 12px;
  border: 1px solid rgba(45, 212, 191, 0.35);
  border-left: 4px solid var(--pf-primary);
  background: linear-gradient(
    105deg,
    rgba(45, 212, 191, 0.14) 0%,
    rgba(99, 102, 241, 0.1) 55%,
    rgba(56, 189, 248, 0.08) 100%
  );
  color: #e2e8f0;
  font-weight: 500;
  line-height: 1.65;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.pf-lead-strength strong {
  color: var(--pf-primary);
  font-weight: 700;
  letter-spacing: 0.02em;
}

/* Stats */
.pf-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.pf-stat {
  position: relative;
  padding: 20px 16px;
  border-radius: 14px;
  background: var(--pf-surface-raised);
  border: 1px solid var(--pf-border);
  text-align: center;
  overflow: hidden;
  transition: transform 0.3s var(--pf-ease), border-color 0.3s;
}

.pf-stat::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(45, 212, 191, 0.08), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
}

.pf-stat:hover {
  transform: translateY(-3px);
  border-color: var(--pf-border-hover);
}

.pf-stat:hover::after {
  opacity: 1;
}

.pf-stat .num {
  position: relative;
  display: block;
  font-family: var(--pf-font-display);
  font-size: 1.65rem;
  font-weight: 800;
  background: linear-gradient(135deg, #a5f3fc, var(--pf-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.pf-stat .lbl {
  position: relative;
  font-size: 0.78rem;
  color: var(--pf-muted);
  font-weight: 500;
}

/* Skills */
.pf-skills-featured {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  margin-bottom: 22px;
}

.pf-skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.pf-skill-block {
  position: relative;
  padding: 22px;
  border-radius: 14px;
  border: 1px solid var(--pf-border);
  background: var(--pf-surface);
  transition: transform 0.3s var(--pf-ease), border-color 0.3s, box-shadow 0.3s;
}

.pf-skill-block:hover {
  transform: translateY(-3px);
  border-color: rgba(148, 163, 184, 0.25);
  box-shadow: var(--pf-shadow);
}

.pf-skill-block--featured {
  padding: 26px 24px;
  border: 1px solid rgba(45, 212, 191, 0.4);
  background: linear-gradient(145deg, rgba(30, 41, 89, 0.95) 0%, rgba(18, 26, 46, 0.98) 50%, rgba(15, 118, 110, 0.15) 100%);
  box-shadow:
    0 0 0 1px rgba(99, 102, 241, 0.12),
    0 16px 48px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.pf-skill-block--featured::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(129, 140, 248, 0.5), rgba(45, 212, 191, 0.6));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.pf-skill-badge {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #0b1120;
  background: linear-gradient(135deg, #67e8f9, var(--pf-primary));
}

.pf-skill-block--featured h3 {
  font-size: 1.1rem;
  background: linear-gradient(135deg, #e0f2fe, var(--pf-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.pf-tag--highlight {
  background: rgba(45, 212, 191, 0.16);
  color: #99f6e4;
  border-color: rgba(45, 212, 191, 0.35);
  font-weight: 600;
}

.pf-skill-block h3 {
  margin: 0 0 8px;
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--pf-primary);
}

.pf-skill-summary {
  margin: 0 0 12px;
  font-size: 0.84rem;
  line-height: 1.55;
  color: var(--pf-muted);
}

.pf-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pf-tag {
  padding: 5px 11px;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 500;
  background: rgba(0, 0, 0, 0.25);
  color: var(--pf-muted);
  border: 1px solid var(--pf-border);
  transition: background 0.2s, color 0.2s, transform 0.2s;
}

.pf-tag:hover {
  background: var(--pf-accent-soft);
  color: #ccfbf1;
  transform: translateY(-1px);
}

/* Projects */
.pf-project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.pf-project-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--pf-radius);
  border: 1px solid var(--pf-border);
  background: var(--pf-surface);
  overflow: hidden;
  color: inherit;
  transition: transform 0.35s var(--pf-ease), box-shadow 0.35s, border-color 0.35s;
}

.pf-project-card-main {
  display: flex;
  flex-direction: column;
  flex: 1;
  text-decoration: none;
  color: inherit;
}

.pf-project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 3;
  background: linear-gradient(105deg, transparent 40%, rgba(255, 255, 255, 0.06) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.6s var(--pf-ease);
  pointer-events: none;
}

.pf-project-card {
  position: relative;
}

.pf-project-card:hover {
  transform: translateY(-6px);
  border-color: var(--pf-border-hover);
  box-shadow: var(--pf-shadow-lg), var(--pf-shadow-glow);
}

.pf-project-card:hover::before {
  transform: translateX(100%);
}

.pf-project-card-cover {
  position: relative;
  aspect-ratio: 16 / 10;
  background: linear-gradient(145deg, #1e293b 0%, #0f172a 100%);
  overflow: hidden;
}

.pf-project-card-cover img,
.pf-project-card-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  z-index: 1;
  transition: transform 0.5s var(--pf-ease);
}

.pf-project-card-cover img.is-hidden {
  display: none;
}

.pf-project-card:hover .pf-project-card-cover img {
  transform: scale(1.06);
}

.pf-project-card-cover--placeholder {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 0;
  background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 55%, #0d9488 100%);
}

.pf-project-card-cover--placeholder.is-visible {
  display: flex;
}

.pf-project-card-cover--placeholder svg {
  width: 48px;
  height: 48px;
  color: rgba(255, 255, 255, 0.85);
}

.pf-project-card-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
  padding: 5px 11px;
  border-radius: 8px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #fff;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(45, 212, 191, 0.3);
}

.pf-project-card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 20px 22px 22px;
  gap: 10px;
}

.pf-project-card-body h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--pf-text);
  transition: color 0.25s;
}

.pf-project-card:hover .pf-project-card-main h3 {
  color: var(--pf-primary);
}

.pf-project-card-body p {
  margin: 0;
  flex: 1;
  font-size: 0.84rem;
  line-height: 1.55;
  color: var(--pf-muted);
}

.pf-project-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.pf-project-card-tags span {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 500;
  background: var(--pf-blue-soft);
  color: #93c5fd;
}

.pf-project-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 20px 18px;
  margin-top: auto;
}

.pf-project-card-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, transform 0.2s;
}

.pf-project-card-btn--muted {
  color: var(--pf-muted);
  background: rgba(0, 0, 0, 0.22);
  border: 1px solid var(--pf-border);
}

.pf-project-card-btn--muted:hover {
  color: var(--pf-text);
  border-color: var(--pf-border-hover);
}

.pf-project-card-btn--primary {
  color: #0b1120;
  background: var(--pf-primary);
}

.pf-project-card-btn--primary:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

/* Services */
.pf-services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.pf-service-card {
  display: flex;
  flex-direction: column;
  position: relative;
  border-radius: var(--pf-radius);
  border: 1px solid var(--pf-border);
  background: var(--pf-surface);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform 0.35s var(--pf-ease), box-shadow 0.35s, border-color 0.35s;
}

.pf-service-card:hover {
  transform: translateY(-6px);
  border-color: var(--pf-border-hover);
  box-shadow: var(--pf-shadow-lg);
}

.pf-service-card-cover {
  position: relative;
  aspect-ratio: 16 / 10;
  background: linear-gradient(145deg, #1e293b 0%, #0f172a 100%);
  overflow: hidden;
}

.pf-service-card-cover img,
.pf-service-card-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  z-index: 1;
  transition: transform 0.5s var(--pf-ease);
}

.pf-service-card-cover img.is-hidden {
  display: none;
}

.pf-service-card:hover .pf-service-card-cover img {
  transform: scale(1.06);
}

.pf-service-card-cover--placeholder {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 0;
  color: rgba(255, 255, 255, 0.9);
}

.pf-service-card-cover--placeholder.is-visible {
  display: flex;
}

.pf-service-card--default .pf-service-card-cover--placeholder {
  background: linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);
}

.pf-service-card--blog .pf-service-card-cover--placeholder {
  background: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%);
}

.pf-service-card--gis .pf-service-card-cover--placeholder {
  background: linear-gradient(135deg, #06b6d4 0%, #2563eb 100%);
}

.pf-service-card-icon-badge {
  position: absolute;
  bottom: 12px;
  left: 12px;
  z-index: 2;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: transform 0.3s var(--pf-ease);
}

.pf-service-card:hover .pf-service-card-icon-badge {
  transform: scale(1.08);
}

.pf-service-card--default .pf-service-card-icon-badge {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.9), rgba(99, 102, 241, 0.9));
}

.pf-service-card--blog .pf-service-card-icon-badge {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.9), rgba(234, 88, 12, 0.9));
}

.pf-service-card--gis .pf-service-card-icon-badge {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.9), rgba(37, 99, 235, 0.9));
}

.pf-svc-icon {
  display: block;
  flex-shrink: 0;
}

.pf-svc-icon--lg {
  width: 3rem;
  height: 3rem;
}

.pf-svc-icon--sm {
  width: 1.35rem;
  height: 1.35rem;
}

.pf-service-card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 20px 22px 22px;
  gap: 10px;
}

.pf-service-card-body h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  transition: color 0.25s;
}

.pf-service-card:hover .pf-service-card-body h3 {
  color: var(--pf-primary);
}

.pf-service-card-body p {
  margin: 0;
  flex: 1;
  font-size: 0.84rem;
  line-height: 1.55;
  color: var(--pf-muted);
}

.pf-service-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.pf-service-card-tags span {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 500;
  background: var(--pf-blue-soft);
  color: #93c5fd;
}

.pf-service-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--pf-primary);
}

.pf-service-card-foot svg {
  width: 18px;
  height: 18px;
  transition: transform 0.3s var(--pf-ease);
}

.pf-service-card:hover .pf-service-card-foot svg {
  transform: translate(4px, -4px);
}

/* Research */
.pf-subsection {
  margin-bottom: 36px;
}

.pf-subsection h3 {
  margin: 0 0 18px;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--pf-text);
}

.pf-subsection-count {
  font-weight: 500;
  color: var(--pf-muted);
  font-size: 0.9em;
}

.pf-topic-list {
  display: grid;
  gap: 14px;
}

.pf-topic-card {
  padding: 20px 22px;
  border-radius: 14px;
  border: 1px solid var(--pf-border);
  background: var(--pf-surface);
  transition: transform 0.3s var(--pf-ease), border-color 0.3s, box-shadow 0.3s;
}

.pf-topic-card:hover {
  transform: translateX(4px);
  border-color: var(--pf-border-hover);
  box-shadow: var(--pf-shadow);
  background: var(--pf-surface-raised);
}

.pf-topic-card h4 {
  margin: 0 0 10px;
  font-size: 0.96rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--pf-text);
}

.pf-topic-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pf-topic-meta span {
  padding: 4px 10px;
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(0, 0, 0, 0.22);
  color: var(--pf-muted);
  border: 1px solid var(--pf-border);
}

.pf-topic-meta .level {
  background: var(--pf-blue-soft);
  color: #93c5fd;
  border-color: transparent;
}

.pf-topic-meta .status {
  background: var(--pf-accent-soft);
  color: var(--pf-primary);
  border-color: transparent;
}

.pf-pub-list {
  display: grid;
  gap: 12px;
}

.pf-pub-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  padding: 18px 20px;
  border-radius: 14px;
  border: 1px solid var(--pf-border);
  background: var(--pf-surface);
  transition: transform 0.3s var(--pf-ease), border-color 0.3s, box-shadow 0.3s;
}

.pf-pub-item:hover {
  transform: translateX(4px);
  border-color: var(--pf-border-hover);
  box-shadow: var(--pf-shadow);
  background: var(--pf-surface-raised);
}

.pf-pub-year {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 6px;
  padding-top: 2px;
}

.pf-pub-year strong {
  font-family: var(--pf-font-display);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--pf-primary);
  line-height: 1;
}

.pf-pub-year .isi {
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: rgba(251, 191, 36, 0.2);
  color: #fbbf24;
}

.pf-pub-body h4 {
  margin: 0 0 6px;
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--pf-text);
}

.pf-pub-body h4 a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

.pf-pub-body h4 a:hover {
  color: var(--pf-primary);
}

.pf-pub-body .journal {
  font-size: 0.82rem;
  color: var(--pf-muted);
  font-style: italic;
}

.pf-pub-actions {
  margin-top: 12px;
}

.pf-pub-detail-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--pf-muted);
  background: rgba(0, 0, 0, 0.22);
  border: 1px solid var(--pf-border);
  transition: color 0.2s, border-color 0.2s, transform 0.2s var(--pf-ease);
}

.pf-pub-detail-btn:hover {
  color: var(--pf-text);
  border-color: var(--pf-border-hover);
  transform: translateY(-1px);
}

@media (max-width: 560px) {
  .pf-pub-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .pf-pub-year {
    flex-direction: row;
    align-items: center;
  }
}

/* Education timeline */
.pf-edu-timeline {
  display: grid;
  gap: 20px;
}

.pf-edu-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 24px;
  padding: 24px 28px;
  border-radius: var(--pf-radius);
  border: 1px solid var(--pf-border);
  background: var(--pf-surface);
  transition: transform 0.3s var(--pf-ease), border-color 0.3s, box-shadow 0.3s;
}

.pf-edu-item:hover {
  transform: translateY(-3px);
  border-color: var(--pf-border-hover);
  box-shadow: var(--pf-shadow);
}

.pf-edu-year {
  font-family: var(--pf-font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--pf-primary);
  line-height: 1;
}

.pf-edu-item h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--pf-text);
}

.pf-edu-school {
  margin: 0 0 4px;
  font-size: 0.9rem;
  color: var(--pf-muted);
}

.pf-edu-major {
  margin: 0;
  font-size: 0.84rem;
  color: var(--pf-muted-soft);
}

@media (max-width: 600px) {
  .pf-edu-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

.pf-section-intro--tight {
  margin: -8px 0 20px;
  font-size: 0.9rem;
}

.pf-edu-summary {
  margin: 28px 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--pf-border);
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
}

.pf-course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.pf-course-card {
  padding: 20px 22px;
  border-radius: 14px;
  border: 1px solid var(--pf-border);
  background: var(--pf-surface);
  transition: transform 0.3s var(--pf-ease), border-color 0.3s, box-shadow 0.3s;
}

.pf-course-card:hover {
  transform: translateY(-3px);
  border-color: var(--pf-border-hover);
  box-shadow: var(--pf-shadow);
  background: var(--pf-surface-raised);
}

.pf-course-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.pf-course-cat {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.pf-course-cat--dl {
  background: rgba(129, 140, 248, 0.2);
  color: #c7d2fe;
}

.pf-course-cat--ml {
  background: rgba(45, 212, 191, 0.16);
  color: #99f6e4;
}

.pf-course-cat--ai {
  background: rgba(56, 189, 248, 0.18);
  color: #7dd3fc;
}

.pf-course-cat--code {
  background: rgba(251, 191, 36, 0.15);
  color: #fcd34d;
}

.pf-course-year {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--pf-primary);
}

.pf-course-card h4 {
  margin: 0 0 6px;
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--pf-text);
}

.pf-course-provider {
  margin: 0 0 8px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--pf-muted);
}

.pf-course-focus {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.55;
  color: var(--pf-muted-soft);
}

.pf-edu-table-wrap {
  padding: 0;
  overflow: hidden;
}

.pf-edu-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.pf-edu-table thead {
  background: var(--pf-surface-raised);
}

.pf-edu-table th,
.pf-edu-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--pf-border);
  vertical-align: top;
}

.pf-edu-table th {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--pf-muted);
}

.pf-edu-table tbody tr {
  transition: background 0.2s;
}

.pf-edu-table tbody tr:last-child td {
  border-bottom: 0;
}

.pf-edu-table tbody tr:hover td {
  background: rgba(45, 212, 191, 0.05);
}

.pf-edu-table td strong {
  color: var(--pf-primary);
  font-weight: 600;
}

.pf-edu-table td:last-child {
  white-space: nowrap;
  color: var(--pf-text);
  font-weight: 500;
}

@media (max-width: 720px) {
  .pf-edu-table thead {
    display: none;
  }

  .pf-edu-table tbody tr {
    display: block;
    padding: 14px 18px;
    border-bottom: 1px solid var(--pf-border);
  }

  .pf-edu-table tbody tr:last-child {
    border-bottom: 0;
  }

  .pf-edu-table td {
    display: block;
    padding: 4px 0;
    border: 0;
  }

  .pf-edu-table td::before {
    content: attr(data-label);
    display: block;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--pf-muted);
    margin-bottom: 2px;
  }
}

/* CTA */
.pf-cta {
  position: relative;
  text-align: center;
  padding: 48px 32px;
  border-radius: var(--pf-radius-lg);
  border: 1px solid rgba(45, 212, 191, 0.25);
  background: linear-gradient(135deg, #1e1b4b 0%, #1e3a8a 40%, #0f766e 100%);
  color: #fff;
  box-shadow: var(--pf-shadow-lg);
  overflow: hidden;
}

.pf-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(45, 212, 191, 0.2), transparent 50%);
  pointer-events: none;
}

.pf-cta-inner {
  position: relative;
  z-index: 1;
}

.pf-cta h2 {
  margin: 0 0 12px;
  font-family: var(--pf-font-display);
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
  justify-content: center;
}

.pf-cta h2::before {
  display: none;
}

.pf-cta p {
  margin: 0 auto 28px;
  opacity: 0.92;
  max-width: 520px;
  font-size: 1rem;
  line-height: 1.65;
}

.pf-cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

.pf-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  transition: box-shadow 0.3s, background 0.3s;
}

.pf-btn-primary {
  background: var(--pf-primary);
  color: #0b1120;
  box-shadow: 0 4px 20px rgba(45, 212, 191, 0.4);
}

.pf-btn-primary:hover {
  box-shadow: 0 8px 32px rgba(45, 212, 191, 0.5);
}

.pf-btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.65);
}

.pf-btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

/* Footer */
.pf-footer {
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--pf-border);
  text-align: center;
  font-size: 0.85rem;
  color: var(--pf-muted);
}

.pf-footer a,
.pf-footer-link {
  color: var(--pf-primary);
  text-decoration: none;
  transition: opacity 0.2s;
}

.pf-footer a:hover {
  opacity: 0.85;
  text-decoration: underline;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .pf-orb {
    animation: none;
  }

  .pf-hero-shine {
    display: none;
  }
}