/* ============================================================
   CV Portfolio — Dark cinematic layout
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Space+Grotesk:wght@400;500;700&display=swap');

:root {
  --color-white: #ffffff;
  --color-black: #000000;
  --color-void: #050607;
  --color-deep: #071111;
  --color-forest: #0f1f1b;
  --color-card: rgba(7, 17, 17, 0.76);
  --color-card-strong: rgba(11, 23, 20, 0.92);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(54, 244, 164, 0.18);
  --color-muted: #a1a1aa;
  --color-soft: #c9f5db;
  --color-accent: #36f4a4;
  --shadow-soft: 0 1px 0 rgba(255,255,255,0.04) inset, 0 24px 60px rgba(0,0,0,0.34);
  --shadow-card: 0 1px 0 rgba(255,255,255,0.04) inset, 0 12px 40px rgba(0,0,0,0.28);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-pill: 9999px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 40px;
  --space-8: 56px;
  --space-9: 72px;
  --space-10: 96px;
  --container: 1180px;
  --transition-fast: 180ms ease;
  --transition-medium: 320ms ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* Kích hoạt momentum scrolling trên iOS */
  -webkit-overflow-scrolling: touch;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  color: var(--color-white);
  background:
    radial-gradient(circle at top, rgba(54, 244, 164, 0.08), transparent 28%),
    radial-gradient(circle at 85% 20%, rgba(54, 244, 164, 0.06), transparent 26%),
    linear-gradient(180deg, #030404 0%, var(--color-void) 38%, #040606 100%);
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
svg {
  display: block;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.page-shell {
  position: relative;
}

.container {
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
}

.ambient {
  position: fixed;
  inset: auto;
  width: 42vw;
  height: 42vw;
  pointer-events: none;
  filter: blur(80px);
  opacity: 0.45;
  z-index: 0;
}

.ambient-one {
  top: -10vw;
  left: -12vw;
  background: radial-gradient(circle, rgba(54, 244, 164, 0.16), transparent 65%);
}

.ambient-two {
  top: 32vw;
  right: -18vw;
  background: radial-gradient(circle, rgba(196, 255, 224, 0.1), transparent 62%);
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  height: 76px;
  display: flex;
  align-items: center;
  transition: background var(--transition-medium), backdrop-filter var(--transition-medium), border-color var(--transition-medium);
}

.nav.scrolled {
  background: rgba(5, 6, 7, 0.82);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-inner {
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  position: relative;
}

.nav-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: lowercase;
}

.nav-logo span {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  position: relative;
  color: rgba(255,255,255,0.86);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 100%;
  height: 1px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-fast);
}

.nav-link:hover::after {
  transform: scaleX(1);
}

.nav-cta {
  position: absolute;
  right: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-hamburger {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: rgba(255,255,255,0.03);
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-direction: column;
  padding: 0;
  cursor: pointer;
}

.nav-hamburger span {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--color-white);
}

.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 92px 24px 28px;
  background: rgba(4, 6, 6, 0.96);
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity 400ms ease, visibility 400ms ease, transform 400ms cubic-bezier(0.2, 0.8, 0.2, 1);
  pointer-events: none;
}

.mobile-nav.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.mobile-nav .nav-link {
  font-size: 22px;
}

.mobile-nav-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: rgba(255,255,255,0.03);
  color: var(--color-white);
  cursor: pointer;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 12px 22px 12px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.btn-primary {
  background: var(--color-white);
  color: var(--color-black);
}

.btn-primary:hover {
  transform: translateY(-1px);
  background: rgba(255,255,255,0.88);
}

.btn-secondary {
  color: var(--color-white);
  border-color: rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.02);
}

.btn-secondary:hover,
.btn-badge:hover {
  transform: translateY(-1px);
  background: rgba(255,255,255,0.08);
}

.btn-discord {
  background: #5865F2;
  color: #ffffff;
}
.btn-discord:hover {
  background: #4752C4;
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(88, 101, 242, 0.3);
}

.btn-telegram {
  background: #229ED9;
  color: #ffffff;
}
.btn-telegram:hover {
  background: #1C84B6;
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(34, 158, 217, 0.3);
}

.btn-github {
  background: #181717;
  color: #ffffff;
  border: 1px solid rgba(255,255,255,0.1);
}
.btn-github:hover {
  background: #2b2a2a;
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.btn-facebook {
  background: #1877F2;
  color: #ffffff;
}
.btn-facebook:hover {
  background: #1664D9;
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(24, 119, 242, 0.3);
}

.btn-badge {
  border-color: rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.06);
  color: var(--color-white);
}

.btn-icon {
  width: 18px;
  height: 18px;
}

/* Tối ưu cuộn trên mobile (Mobile Inertia & Snap) */
@media (max-width: 768px) {
  body {
    scroll-snap-type: y proximity;
  }
  
  section {
    scroll-snap-align: start;
    scroll-margin-top: 20px;
  }
}

.hero {
  position: relative;
  padding: 140px 0 64px;
  overflow: hidden;
}

.hero-bg,
.hero-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-bg {
  background:
    radial-gradient(circle at 20% 20%, rgba(54, 244, 164, 0.12), transparent 22%),
    radial-gradient(circle at 80% 18%, rgba(255,255,255,0.05), transparent 18%),
    linear-gradient(180deg, rgba(255,255,255,0.02), transparent 65%);
}

.hero-glow {
  left: 50%;
  top: 18%;
  width: 460px;
  height: 460px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(54, 244, 164, 0.18), transparent 68%);
  filter: blur(20px);
  animation: pulse-glow 6s ease-in-out infinite;
  transition: left 0.15s ease-out, top 0.15s ease-out;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 420px);
  gap: 28px;
  align-items: end;
}

.hero-copy,
.hero-card,
.glass-card,
.skill-card,
.timeline-card,
.contact-panel,
.cv-frame,
.side-card,
.stat-card {
  border: 1px solid var(--color-border);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  box-shadow: var(--shadow-card);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.hero-copy {
  padding: 34px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero-badge,
.cv-chip,
.hero-card-chip,
.hero-card-status,
.card-kicker,
.timeline-year,
.section-overline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
}

.hero-badge {
  margin-bottom: 18px;
  padding: 10px 14px;
  border-radius: var(--radius-pill);
  background: rgba(54, 244, 164, 0.1);
  border: 1px solid rgba(54, 244, 164, 0.18);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 6px rgba(54, 244, 164, 0.12);
}

.hero-title,
.section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  letter-spacing: -0.04em;
  margin: 0;
}

.hero-title {
  font-size: clamp(64px, 10vw, 112px);
  line-height: 0.92;
}

.hero-title em {
  color: var(--color-soft);
  font-style: normal;
}

.hero-subtitle,
.section-text,
.section-copy p,
.glass-card p,
.skill-card p,
.timeline-card p,
.side-card p,
.contact-panel p,
.cv-fallback p,
.hero-card-body p {
  color: rgba(255,255,255,0.76);
  line-height: 1.7;
  font-size: 17px;
}

.hero-subtitle {
  max-width: 58ch;
  margin: 18px 0 0;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.contact-actions.right-aligned {
  margin-top: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  flex: none;
  width: fit-content;
}

.contact-actions.right-aligned .btn {
  min-width: 180px;
  padding: 14px 24px;
}

.hero-socials {
  display: flex;
  gap: 12px;
  margin-top: 28px;
}

.hero-social-link {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: rgba(255,255,255,0.03);
  color: var(--color-white);
  transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.hero-social-link:hover {
  transform: translateY(-2px);
  background: rgba(54, 244, 164, 0.08);
  border-color: rgba(54, 244, 164, 0.2);
}

.hero-card {
  border-radius: var(--radius-lg);
  padding: 20px;
}

.hero-card-top,
.cv-frame-topbar,
.footer-inner,
.split-grid,
.cv-grid,
.stats-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.hero-card-top {
  margin-bottom: 18px;
}

.hero-card-chip,
.hero-card-status,
.cv-chip {
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--color-border);
}

.hero-card-status {
  color: var(--color-accent);
  border-color: rgba(54, 244, 164, 0.24);
}

.hero-card-body {
  padding: 10px 0 6px;
}

.hero-card-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(44px, 6vw, 72px);
  font-weight: 700;
  line-height: 1;
}

.hero-card-number span {
  font-size: 14px;
  color: var(--color-muted);
  margin-left: 8px;
}

.hero-mini-grid {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.hero-mini-grid div {
  padding: 16px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
}

.hero-mini-grid strong,
.stat-number,
.timeline-card h3,
.glass-card h3,
.skill-card h3,
.side-card h3,
.contact-panel h2,
.cv-frame h2 {
  font-family: 'Space Grotesk', sans-serif;
}

.hero-mini-grid strong {
  display: block;
  font-size: 18px;
  margin-bottom: 6px;
}

.hero-mini-grid span {
  color: var(--color-muted);
  font-size: 14px;
}

.marquee {
  position: relative;
  z-index: 1;
  overflow: hidden;
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  background: rgba(255,255,255,0.02);
}

.marquee-track {
  display: flex;
  gap: 16px;
  width: max-content;
  padding: 18px 0;
  animation: marquee 28s linear infinite;
}

.marquee-item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.04);
  white-space: nowrap;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 18px rgba(54, 244, 164, 0.5);
}

.stats-section,
.section {
  position: relative;
  z-index: 1;
  padding: 88px 0 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.stat-card {
  border-radius: var(--radius-md);
  padding: 22px;
}

.stat-number {
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1;
}

.stat-number span {
  font-size: 16px;
  color: var(--color-accent);
}

.stat-card p,
.skill-card p,
.timeline-card p,
.side-card p {
  margin: 10px 0 0;
  color: rgba(255,255,255,0.72);
}

.split-grid,
.cv-grid {
  align-items: start;
}

.section-split .split-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 450px);
  gap: 24px;
}

.section-copy,
.feature-stack {
  display: grid;
  gap: 18px;
}

.section-title {
  font-size: clamp(34px, 5vw, 64px);
  line-height: 0.98;
  margin-top: 14px;
  max-width: 12ch;
}

.section-text {
  max-width: 64ch;
  margin: 16px 0 0;
}

.narrow {
  max-width: 58ch;
}

.glass-card,
.skill-card,
.timeline-card,
.side-card,
.contact-panel,
.cv-frame {
  border-radius: var(--radius-lg);
}

.glass-card,
.skill-card,
.timeline-card,
.side-card {
  padding: 22px;
}

.glass-card h3,
.skill-card h3,
.side-card h3,
.timeline-card h3 {
  margin: 10px 0 0;
  font-size: 26px;
}

.muted-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
}

.card-kicker {
  color: var(--color-accent);
}

.cv-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  gap: 24px;
  align-items: start;
}

.cv-frame {
  overflow: hidden;
}

.cv-frame-topbar {
  padding: 18px 18px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  flex-wrap: wrap;
}

.cv-file-name {
  margin-left: 10px;
  font-size: 14px;
  color: var(--color-white);
  font-weight: 600;
}

.cv-viewer {
  width: calc(100% + 18px); /* Hides internal PDF scrollbar by pushing it outside the hidden container */
  height: min(88vh, 960px);
  min-height: 720px;
  border: 0;
  background: #0b1211;
  overflow: hidden;
  scrollbar-width: none;
  display: block;
}

.cv-viewer::-webkit-scrollbar {
  display: none;
}

.cv-fallback {
  min-height: 720px;
  display: grid;
  place-items: center;
  padding: 32px;
  text-align: center;
}

.cv-side {
  display: grid;
  gap: 18px;
}

.side-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
}

.accent-side-card {
  border-color: rgba(54, 244, 164, 0.18);
  background: linear-gradient(180deg, rgba(54, 244, 164, 0.08), rgba(255,255,255,0.03));
}

.meta-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
  padding: 0;
  list-style: none;
}

.meta-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

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

.meta-list strong {
  color: rgba(255,255,255,0.92);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.skill-card {
  min-height: 190px;
}

.timeline {
  position: relative;
  display: grid;
  gap: 18px;
  padding-left: 16px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 17px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, rgba(54, 244, 164, 0.6), rgba(255,255,255,0.08));
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 16px;
  align-items: start;
}

.timeline-dot {
  width: 14px;
  height: 14px;
  margin-top: 20px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 8px rgba(54, 244, 164, 0.12);
}

.timeline-card {
  border-radius: var(--radius-md);
}

.contact-panel {
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.footer {
  position: relative;
  z-index: 1;
  padding: 42px 0 36px;
}

.footer-inner {
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.7);
  font-size: 14px;
}

.reveal {
  opacity: 0;
  transform: translateY(30px) scale(0.98);
  transition: opacity 800ms cubic-bezier(0.2, 0.8, 0.2, 1), transform 800ms cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: opacity, transform;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.reveal-delay-1 { transition-delay: 120ms; }
.reveal-delay-2 { transition-delay: 240ms; }
.reveal-delay-3 { transition-delay: 360ms; }

@keyframes pulse-glow {
  0%, 100% { transform: translateX(-50%) scale(1); opacity: 0.65; }
  50% { transform: translateX(-50%) scale(1.08); opacity: 1; }
}

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

@media (max-width: 1080px) {
  .nav-links,
  .nav-cta .btn-primary {
    display: none;
  }

  .nav-hamburger {
    display: inline-flex;
  }

  .hero-content,
  .section-split .split-grid,
  .cv-grid,
  .stats-grid,
  .skills-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 124px;
  }

  .hero-card {
    max-width: 560px;
  }
}

@media (max-width: 720px) {
  .container,
  .nav-inner {
    width: min(100% - 24px, var(--container));
  }

  .hero-title {
    font-size: clamp(52px, 18vw, 84px);
  }

  .section-title {
    max-width: none;
    font-size: clamp(30px, 11vw, 48px);
  }

  .hero-subtitle,
  .section-text,
  .glass-card p,
  .skill-card p,
  .timeline-card p,
  .side-card p,
  .contact-panel p {
    font-size: 16px;
  }

  .hero-mini-grid,
  .contact-actions {
    grid-template-columns: 1fr;
  }

  .contact-actions.right-aligned {
    grid-template-columns: repeat(2, 1fr);
    width: 100%;
  }

  .contact-actions.right-aligned .btn {
    min-width: 0;
  }

  .contact-panel {
    padding: 20px;
  }

  .cv-viewer,
  .cv-fallback {
    min-height: 520px;
    height: 72vh;
  }

  .timeline {
    padding-left: 0;
  }

  .timeline::before {
    left: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .marquee-track,
  .hero-glow,
  .reveal {
    animation: none !important;
    transition: none !important;
  }

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