/* ==========================================================================
   DESIGN TOKENS
   ========================================================================== */

:root {
  /* Type Scale (fluid clamp) */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);

  /* Spacing (4px base) */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Fonts */
  --font-display: 'JetBrains Mono', 'Pretendard Variable', 'Pretendard', 'Apple SD Gothic Neo', 'Courier New', monospace;
  --font-body: 'Satoshi', 'Pretendard Variable', 'Pretendard', 'Apple SD Gothic Neo', 'Helvetica Neue', sans-serif;
  --font-mono: 'JetBrains Mono', 'Pretendard Variable', 'Pretendard', 'Apple SD Gothic Neo', 'Courier New', monospace;

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   DARK THEME (only dark — per user request)
   ========================================================================== */

:root, [data-theme="dark"] {
  --color-bg:          #0a0e1a;
  --color-surface:     #0f1424;
  --color-surface-2:   #141a2e;
  --color-border:      #1e2640;
  --color-border-glow: rgba(0, 212, 255, 0.15);

  --color-text:        #c8cdd8;
  --color-text-muted:  #6b7280;
  --color-text-faint:  #3d4555;

  --color-primary:       #00d4ff;
  --color-primary-dim:   rgba(0, 212, 255, 0.12);
  --color-primary-hover: #33ddff;

  --color-accent:       #00ff88;
  --color-accent-dim:   rgba(0, 255, 136, 0.1);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.1);
}

/* ==========================================================================
   BASE RESET
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"], ol[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.15; }
p, li, figcaption { text-wrap: pretty; max-width: 72ch; }

::selection {
  background: rgba(0, 212, 255, 0.25);
  color: #ffffff;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

a, button, [role="button"] {
  transition: color var(--transition-interactive),
              background var(--transition-interactive),
              border-color var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
}

button { cursor: pointer; background: none; border: none; }

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

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: var(--color-bg);
  font-weight: 700;
  border-radius: var(--radius-sm);
  z-index: 999;
  text-decoration: none;
}
.skip-link:focus { top: var(--space-4); }

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

/* ==========================================================================
   NAVIGATION
   ========================================================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 14, 26, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: transform 0.3s var(--ease-out-expo),
              box-shadow 0.3s var(--ease-out-expo);
  /* Promote the nav to its own GPU layer to prevent the brief
     "transparent frame" flash some mobile browsers (iOS Safari in
     particular) show when re-compositing a fixed element with
     backdrop-filter on top of scrolling content. */
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  will-change: transform;
}

.nav--scrolled { box-shadow: var(--shadow-md); }

.nav__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
}

.nav__logo {
  color: var(--color-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.nav__logo:hover { color: var(--color-primary-hover); }

.nav__avatar {
  border-radius: 50%;
  object-fit: cover;
  transition: opacity 0.2s ease;
}
.nav__avatar:hover { opacity: 0.8; }

.nav__brand {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  white-space: nowrap;
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity 0.5s var(--ease-out-expo),
              transform 0.5s var(--ease-out-expo);
  pointer-events: none;
}

.nav--scrolled .nav__brand {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

.nav__brand-name {
  color: #ffffff;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.nav__brand-sep {
  color: var(--color-text-faint);
}

.nav__brand-company,
.nav__brand-role {
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

@media (max-width: 768px) {
  /* Keep nav__brand visible on scroll just like desktop — show name + company
     so users can identify the site once they've scrolled past the hero. */
  .nav__brand {
    display: inline-flex;
    font-size: 10px;
    gap: var(--space-1);
    max-width: 60vw;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* Hide the role on narrow screens to keep the nav compact. */
  .nav__brand-role {
    display: none;
  }

  /* Mobile fix: backdrop-filter blur on a position:fixed nav layer causes
     iOS Safari (and some Android Chromium builds) to flash a transparent
     frame on scroll. Force a fully opaque background and disable the blur
     filter on touch devices. */
  .nav {
    background: rgba(10, 14, 26, 0.98);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  /* Mobile fix: the hero's animated dot pattern uses mask-image + an
     infinite transform animation. On mobile GPUs, this occasionally
     flickers a white frame when the layer re-composites during scroll.
     Disable the animation and the radial mask on small screens. */
  .hero__particles {
    animation: none;
    mask-image: none;
    -webkit-mask-image: none;
  }
  .hero__grid-bg {
    mask-image: none;
    -webkit-mask-image: none;
  }
}

@media (max-width: 375px) {
  /* Very narrow screens: show only the name + company initial. */
  .nav__brand-sep:not(:last-of-type) {
    display: none;
  }
}

.nav__links {
  display: flex;
  gap: var(--space-6);
  align-items: center;
}

/* Language toggle */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: var(--space-2);
  padding: 4px 10px;
  border: 1px solid var(--color-border, rgba(255,255,255,0.12));
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.02);
}

.lang-toggle__btn {
  background: transparent;
  border: 0;
  padding: 2px 4px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  cursor: pointer;
  text-transform: uppercase;
  transition: color 0.2s ease;
  line-height: 1;
}

.lang-toggle__btn:hover {
  color: var(--color-text);
}

.lang-toggle__btn--active {
  color: var(--color-primary);
  font-weight: 700;
}

.lang-toggle__sep {
  color: var(--color-text-muted);
  opacity: 0.4;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  user-select: none;
}

.nav__link {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  position: relative;
  padding: var(--space-1) 0;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-primary);
  transition: width 0.3s var(--ease-out-expo);
}

.nav__link:hover,
.nav__link--active { color: var(--color-primary); }
.nav__link:hover::after,
.nav__link--active::after { width: 100%; }

/* Mobile toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}

.nav__toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform 0.3s var(--ease-out-expo),
              opacity 0.2s ease;
}

/* Mobile nav state */
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) {
  opacity: 0;
}
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 768px) {
  .nav__toggle { display: flex; }

  .nav__links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 14, 26, 0.97);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-8);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 90;
  }

  .nav__links--open {
    opacity: 1;
    pointer-events: all;
  }

  .nav__link {
    font-size: var(--text-lg);
    text-transform: uppercase;
    letter-spacing: 0.12em;
  }

  .lang-toggle {
    margin-left: 0;
    margin-top: var(--space-2);
  }

  .lang-toggle__btn {
    font-size: var(--text-sm);
    padding: 4px 8px;
  }
}

/* ==========================================================================
   HERO
   ========================================================================== */

.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-32) var(--space-6) var(--space-16);
  overflow: hidden;
}

/* Grid background pattern */
.hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black, transparent);
}

/* Subtle dot particles */
.hero__particles {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle 1.5px, rgba(0, 212, 255, 0.15) 100%, transparent 100%);
  background-size: 40px 40px;
  background-position: 20px 20px;
  mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 20%, transparent);
  -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 20%, transparent);
  animation: particles-drift 20s ease-in-out infinite alternate;
}

@keyframes particles-drift {
  0%   { transform: translate(0, 0); }
  100% { transform: translate(10px, -10px); }
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: var(--content-default);
}

.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
  background: var(--color-accent-dim);
  border: 1px solid rgba(0, 255, 136, 0.2);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-8);
  animation: fadeInUp 0.6s var(--ease-out-expo) both;
}

.hero__status-dot {
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.4; }
}

.hero__name {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: var(--space-4);
  animation: fadeInUp 0.6s var(--ease-out-expo) 0.1s both;
}

.hero__title {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  animation: fadeInUp 0.6s var(--ease-out-expo) 0.2s both;
}

.hero__subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 50ch;
  margin: 0 auto var(--space-8);
  animation: fadeInUp 0.6s var(--ease-out-expo) 0.3s both;
}

.hero__meta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
  animation: fadeInUp 0.6s var(--ease-out-expo) 0.4s both;
}

.hero__meta-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.hero__meta-item a {
  color: var(--color-text-muted);
  text-decoration: none;
}
.hero__meta-item a:hover { color: var(--color-primary); }

.hero__actions {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  animation: fadeInUp 0.6s var(--ease-out-expo) 0.5s both;
}

/* Scroll indicator */
.hero__scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  animation: fadeInUp 0.6s var(--ease-out-expo) 0.7s both;
}

.hero__scroll-indicator span {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.hero__scroll-indicator svg {
  color: var(--color-text-faint);
  animation: scroll-bounce 2s ease-in-out infinite;
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(4px); }
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  cursor: pointer;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-bg);
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.3);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.1);
}

/* ==========================================================================
   SECTIONS
   ========================================================================== */

.section {
  padding: clamp(var(--space-16), 8vw, var(--space-32)) var(--space-6);
  position: relative;
}

.section__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
}

.section__heading {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: #ffffff;
  margin-bottom: var(--space-12);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.section__number {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 400;
}

.section__heading::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--color-border), transparent);
  margin-left: var(--space-4);
}

/* ==========================================================================
   ENTRANCE ANIMATIONS (CSS-only, IntersectionObserver triggers)
   ========================================================================== */

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

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-out-expo),
              transform 0.6s var(--ease-out-expo);
}

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

/* ==========================================================================
   ABOUT
   ========================================================================== */

.about__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
}

.about__text {
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: 1.75;
  max-width: 65ch;
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.about__stat {
  text-align: center;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-interactive),
              box-shadow var(--transition-interactive);
}

.about__stat:hover {
  border-color: var(--color-border-glow);
  box-shadow: var(--shadow-glow);
}

.about__stat-value {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

.about__stat-label {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@media (max-width: 600px) {
  .about__stats {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   SKILLS
   ========================================================================== */

.skills__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

.skills__category {
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
  transition: border-color var(--transition-interactive),
              box-shadow var(--transition-interactive);
}

.skills__category:hover {
  border-color: rgba(0, 212, 255, 0.25);
  box-shadow: var(--shadow-glow), inset 0 0 40px rgba(0, 212, 255, 0.03);
}

.skills__category-title {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.skills__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.skill-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text);
  background: var(--color-primary-dim);
  border: 1px solid rgba(0, 212, 255, 0.15);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: background var(--transition-interactive),
              border-color var(--transition-interactive);
}

.skill-tag:hover {
  background: rgba(0, 212, 255, 0.18);
  border-color: rgba(0, 212, 255, 0.3);
}

.skill-tag[data-skill] {
  cursor: pointer;
  position: relative;
}

.skill-tag[data-skill]:hover {
  background: rgba(0, 212, 255, 0.28);
  border-color: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.18);
  transform: translateY(-1px);
}

.skill-tag[data-skill]:active {
  transform: translateY(0);
  background: rgba(0, 212, 255, 0.4);
}

.skill-tag[data-skill]::after {
  content: '→';
  display: inline-block;
  margin-left: 0.35em;
  opacity: 0.45;
  font-family: var(--font-mono);
  transition: opacity var(--transition-interactive),
              transform var(--transition-interactive);
}

.skill-tag[data-skill]:hover::after {
  opacity: 1;
  transform: translateX(2px);
}

@media (max-width: 600px) {
  .skills__grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   EXPERIENCE
   ========================================================================== */

.experience__timeline {
  position: relative;
  padding-left: var(--space-8);
}

.experience__timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-border) 80%, transparent);
}

.experience__item {
  position: relative;
  margin-bottom: var(--space-10);
}

.experience__item:last-child { margin-bottom: 0; }

.experience__marker {
  position: absolute;
  left: calc(-1 * var(--space-8) + 3px);
  top: var(--space-6);
  width: 9px;
  height: 9px;
  background: var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.4);
}

.experience__card {
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-interactive),
              box-shadow var(--transition-interactive);
}

.experience__card:hover {
  border-color: rgba(0, 212, 255, 0.2);
  box-shadow: var(--shadow-glow);
}

.experience__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.experience__role {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 700;
  color: #ffffff;
}

.experience__company {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.experience__date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  white-space: nowrap;
}

.experience__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.experience__list li {
  font-size: var(--text-sm);
  color: var(--color-text);
  padding-left: var(--space-5);
  position: relative;
  line-height: 1.65;
}

.experience__list li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-size: var(--text-sm);
}

/* Experience — header layout with logo */
.experience__header-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.experience__logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  object-fit: contain;
  background: rgba(255, 255, 255, 0.08);
  padding: 4px;
  flex-shrink: 0;
}

/* Company-themed colors — Bithumb (orange) */
.experience__item--bithumb .experience__marker {
  background: #f58220;
  box-shadow: 0 0 8px rgba(245, 130, 32, 0.4);
}
.experience__item--bithumb .experience__card:hover {
  border-color: rgba(245, 130, 32, 0.3);
  box-shadow: 0 0 20px rgba(245, 130, 32, 0.1);
}
.experience__item--bithumb .experience__date {
  color: #f58220;
}
.experience__item--bithumb .experience__list li::before {
  color: #f58220;
}

/* Company-themed colors — JobKorea/Worxphere (dark navy) */
.experience__item--jobkorea .experience__marker {
  background: #4B7FA6;
  box-shadow: 0 0 8px rgba(75, 127, 166, 0.4);
}
.experience__item--jobkorea .experience__card:hover {
  border-color: rgba(75, 127, 166, 0.3);
  box-shadow: 0 0 20px rgba(75, 127, 166, 0.1);
}
.experience__item--jobkorea .experience__date {
  color: #4B7FA6;
}
.experience__item--jobkorea .experience__list li::before {
  color: #4B7FA6;
}

/* Company-themed colors — Bespin Global (blue) */
.experience__item--bespin .experience__marker {
  background: #0078d4;
  box-shadow: 0 0 8px rgba(0, 120, 212, 0.4);
}
.experience__item--bespin .experience__card:hover {
  border-color: rgba(0, 120, 212, 0.3);
  box-shadow: 0 0 20px rgba(0, 120, 212, 0.1);
}
.experience__item--bespin .experience__date {
  color: #0078d4;
}
.experience__item--bespin .experience__list li::before {
  color: #0078d4;
}

/* ==========================================================================
   PROJECTS
   ========================================================================== */

.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.project-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
  transition: border-color 0.3s var(--ease-out-expo),
              box-shadow 0.3s var(--ease-out-expo),
              transform 0.3s var(--ease-out-expo);
}

.project-card:hover {
  border-color: rgba(0, 212, 255, 0.25);
  box-shadow: var(--shadow-glow), inset 0 0 60px rgba(0, 212, 255, 0.03);
  transform: translateY(-4px);
}

.project-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-5);
  color: var(--color-primary);
}

.project-card__link {
  color: var(--color-text-muted);
  text-decoration: none;
}
.project-card__link:hover { color: var(--color-primary); }

.project-card__badge {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.project-card__title {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 700;
  color: #ffffff;
  margin-bottom: var(--space-3);
}

.project-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  flex: 1;
  margin-bottom: var(--space-5);
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
}

.project-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text);
  background: var(--color-primary-dim);
  border: 1px solid rgba(0, 212, 255, 0.15);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: background var(--transition-interactive),
              border-color var(--transition-interactive);
}

.project-tag:hover {
  background: rgba(0, 212, 255, 0.2);
  border-color: rgba(0, 212, 255, 0.35);
}

.project-tag + .project-tag::before {
  content: none;
}

@media (max-width: 900px) {
  .projects__grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   EDUCATION
   ========================================================================== */

.education__card {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  max-width: 600px;
  transition: border-color var(--transition-interactive),
              box-shadow var(--transition-interactive);
}

.education__card:hover {
  border-color: rgba(0, 212, 255, 0.2);
  box-shadow: var(--shadow-glow);
}

.education__icon {
  color: var(--color-primary);
  flex-shrink: 0;
}

.education__degree {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 700;
  color: #ffffff;
}

.education__school {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.education__year {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  margin-top: var(--space-1);
  display: block;
}

.education__thesis {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  line-height: 1.65;
  max-width: 70ch;
}

/* ==========================================================================
   CERTIFICATIONS / AWARDS / PUBLICATIONS
   ========================================================================== */

.certs {
  margin-top: var(--space-10);
}

.certs__subheading {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
  margin-top: var(--space-8);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}

.certs__subheading:first-child {
  margin-top: 0;
}

.certs__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

.cert-item {
  display: flex;
  flex-direction: column;
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-interactive),
              box-shadow var(--transition-interactive);
}

.cert-item:hover {
  border-color: rgba(0, 212, 255, 0.2);
  box-shadow: var(--shadow-glow);
}

.cert-item__name {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.5;
}

a.cert-item--link {
  text-decoration: none;
  display: flex;
  flex-direction: column;
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  position: relative;
  transition: border-color var(--transition-interactive),
              box-shadow var(--transition-interactive),
              background var(--transition-interactive),
              transform var(--transition-interactive);
}

a.cert-item--link:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-dim);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.15);
  transform: translateY(-1px);
}

a.cert-item--link .cert-item__name {
  color: var(--color-text);
  padding-right: var(--space-6);
}

a.cert-item--link:hover .cert-item__name {
  color: var(--color-primary);
}

.cert-item__icon {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  color: var(--color-text-faint);
  opacity: 0.6;
  transition: opacity var(--transition-interactive),
              color var(--transition-interactive),
              transform var(--transition-interactive);
}

a.cert-item--link:hover .cert-item__icon {
  color: var(--color-primary);
  opacity: 1;
  transform: translate(1px, -1px);
}

.cert-item__date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  margin-top: var(--space-1);
}

/* ==========================================================================
   MILITARY
   ========================================================================== */

.military {
  margin-top: var(--space-10);
}

.military__text {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: var(--space-3) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: inline-block;
}

@media (max-width: 600px) {
  .certs__grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   CONTACT
   ========================================================================== */

.contact__text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  max-width: 50ch;
}

.contact__note {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-6);
  letter-spacing: 0.02em;
}

.contact__links {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.contact__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text);
  text-decoration: none;
  padding: var(--space-4) var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color 0.3s var(--ease-out-expo),
              box-shadow 0.3s var(--ease-out-expo),
              transform 0.3s var(--ease-out-expo),
              color 0.3s var(--ease-out-expo);
}

.contact__link:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.15);
  transform: translateY(-2px);
  color: var(--color-primary);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer {
  padding: var(--space-8) var(--space-6);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer__attribution {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
}
.footer__attribution:hover { color: var(--color-text-muted); }

/* ==========================================================================
   RESPONSIVE OVERRIDES
   ========================================================================== */

@media (max-width: 768px) {
  .hero {
    padding-top: var(--space-24);
  }

  .hero__name {
    font-size: var(--text-3xl);
  }

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .section__heading {
    font-size: var(--text-lg);
  }

  .about__stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 375px) {
  .hero__meta {
    flex-direction: column;
    gap: var(--space-3);
  }

  .about__stats {
    grid-template-columns: 1fr;
  }

  .contact__links {
    flex-direction: column;
  }
}

/* ==========================================================================
   CAREER — 3-VIEW TAB SWITCHER
   ========================================================================== */

.career__prompt {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: #ffffff;
  margin-bottom: var(--space-6);
  text-align: center;
}

.career__tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.career__tab {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: var(--space-3) var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: transparent;
  cursor: pointer;
  position: relative;
  min-width: 140px;
  text-align: center;
  transition: color var(--transition-interactive),
              border-color var(--transition-interactive),
              background var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
}

.career__tab:hover {
  color: var(--color-text);
  border-color: rgba(0, 212, 255, 0.2);
}

.career__tab:hover {
  color: var(--color-text);
  border-color: rgba(0, 212, 255, 0.2);
  transform: translateY(-1px);
}

.career__tab--active {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-dim);
  font-weight: 700;
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.12);
  transform: translateY(-1px);
}

.career__view {
  display: none;
  animation: fadeInUp 0.4s var(--ease-out-expo) both;
}

.career__view--active {
  display: block;
}

.career__view[hidden] {
  display: none !important;
}

@media (max-width: 600px) {
  .career__tabs {
    flex-direction: column;
    gap: var(--space-2);
  }

  .career__tab {
    text-align: left;
  }
}

/* ==========================================================================
   TECH MINDMAP GRAPH
   ========================================================================== */

.career__hint {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  letter-spacing: 0.02em;
}

.career__legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
  padding: var(--space-3) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

.legend-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid transparent;
}

.legend-dot--hub {
  background: var(--color-primary);
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.4);
}

.legend-dot--tech {
  background: transparent;
  border-color: var(--color-primary);
}

.legend-dot--company {
  background: var(--color-accent);
  box-shadow: 0 0 6px rgba(0, 255, 136, 0.3);
}

.legend-dot--project {
  background: rgba(255, 200, 50, 0.85);
  box-shadow: 0 0 6px rgba(255, 200, 50, 0.25);
}

.tech-graph {
  position: relative;
  width: 100%;
  min-height: 520px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(8px);
}

.tech-graph::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black, transparent);
  pointer-events: none;
}

.tech-graph svg {
  width: 100%;
  height: 100%;
  display: block;
  min-height: 520px;
}

.tech-graph__fallback {
  padding: var(--space-10);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  text-align: center;
}

/* SVG node styles */
.tech-graph .node-circle {
  cursor: pointer;
  transition: opacity 0.25s var(--ease-out-expo),
              stroke-width 0.25s var(--ease-out-expo),
              fill 0.25s var(--ease-out-expo);
}

.tech-graph .node-label {
  font-family: var(--font-mono);
  font-size: 11px;
  pointer-events: none;
  user-select: none;
  transition: opacity 0.25s var(--ease-out-expo),
              fill 0.25s var(--ease-out-expo);
}

.tech-graph .edge {
  stroke: rgba(0, 212, 255, 0.18);
  stroke-width: 1px;
  fill: none;
  transition: stroke 0.25s var(--ease-out-expo),
              stroke-width 0.25s var(--ease-out-expo),
              opacity 0.25s var(--ease-out-expo);
}

/* Node type fills */
.tech-graph .node--hub .node-circle {
  fill: var(--color-primary);
  stroke: rgba(0, 212, 255, 0.5);
  stroke-width: 1.5px;
  filter: drop-shadow(0 0 6px rgba(0, 212, 255, 0.4));
}

.tech-graph .node--hub .node-label {
  fill: var(--color-primary);
  font-weight: 700;
}

.tech-graph .node--tech .node-circle {
  fill: rgba(10, 14, 26, 0.95);
  stroke: var(--color-primary);
  stroke-width: 1.5px;
}

.tech-graph .node--tech .node-label {
  fill: var(--color-text);
}

.tech-graph .node--company .node-circle {
  fill: var(--color-accent);
  stroke: rgba(0, 255, 136, 0.4);
  stroke-width: 1.5px;
  filter: drop-shadow(0 0 4px rgba(0, 255, 136, 0.3));
}

.tech-graph .node--company .node-label {
  fill: var(--color-accent);
  font-weight: 600;
}

.tech-graph .node--project .node-circle {
  fill: rgba(255, 200, 50, 0.85);
  stroke: rgba(255, 200, 50, 0.5);
  stroke-width: 1.5px;
  filter: drop-shadow(0 0 4px rgba(255, 200, 50, 0.2));
}

.tech-graph .node--project .node-label {
  fill: rgba(255, 230, 150, 0.95);
}

/* Dimmed state (when another node is highlighted) */
.tech-graph.is-focusing .node-group:not(.is-highlight) {
  opacity: 0.18;
}

.tech-graph.is-focusing .edge:not(.is-highlight) {
  opacity: 0.08;
}

/* Highlighted state */
.tech-graph .node-group.is-highlight .node-circle {
  stroke-width: 2.5px;
}

.tech-graph .node-group.is-highlight .node-label {
  font-weight: 700;
}

.tech-graph .edge.is-highlight {
  stroke: var(--color-primary);
  stroke-width: 1.8px;
  opacity: 1;
}

.tech-graph .node-group:hover .node-circle {
  stroke-width: 2.5px;
}

@media (max-width: 600px) {
  .tech-graph,
  .tech-graph svg {
    min-height: 400px;
  }

  .tech-graph .node-label {
    font-size: 9px;
  }

  .career__legend {
    gap: var(--space-3);
  }
}

/* ==========================================================================
   PROJECT DETAIL MODAL
   ========================================================================== */

/* Clickable project card affordance */
.project-card {
  cursor: pointer;
  text-align: left;
  font: inherit;
  color: inherit;
  width: 100%;
}

.project-card:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.project-card__title::after {
  content: " →";
  color: var(--color-text-faint);
  font-weight: 400;
  margin-left: var(--space-1);
  transition: color var(--transition-interactive),
              transform var(--transition-interactive);
  display: inline-block;
}

.project-card:hover .project-card__title::after,
.project-card:focus-visible .project-card__title::after {
  color: var(--color-primary);
  transform: translateX(3px);
}

/* Modal container */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.modal[hidden] {
  display: none;
}

/* Backdrop */
.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(5, 8, 18, 0.78);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.25s var(--ease-out-expo);
}

.modal--open .modal__backdrop {
  opacity: 1;
}

/* Dialog panel */
.modal__dialog {
  position: relative;
  width: 100%;
  max-width: 720px;
  max-height: calc(100dvh - var(--space-8));
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(0, 212, 255, 0.08),
              0 0 60px rgba(0, 212, 255, 0.08);
  overflow: hidden;
  transform: scale(0.94) translateY(12px);
  opacity: 0;
  transition: transform 0.3s var(--ease-out-expo),
              opacity 0.25s var(--ease-out-expo);
}

.modal--open .modal__dialog {
  transform: scale(1) translateY(0);
  opacity: 1;
}

/* Header */
.modal__header {
  position: relative;
  padding: var(--space-6) var(--space-6) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  background:
    linear-gradient(180deg, rgba(0, 212, 255, 0.04), transparent 70%),
    var(--color-surface);
  flex-shrink: 0;
}

.modal__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.modal__badge {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.modal__owner {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  padding: 2px var(--space-2);
  background: var(--color-primary-dim);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
}

.modal__title {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: 700;
  color: #ffffff;
  line-height: 1.2;
  padding-right: var(--space-12); /* room for close button */
  margin: 0;
}

.modal__close {
  position: absolute;
  top: var(--space-5);
  right: var(--space-5);
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color var(--transition-interactive),
              background var(--transition-interactive),
              border-color var(--transition-interactive);
}

.modal__close:hover,
.modal__close:focus-visible {
  color: var(--color-primary);
  background: var(--color-primary-dim);
  border-color: rgba(0, 212, 255, 0.35);
}

/* Body — scrollable */
.modal__body {
  padding: var(--space-6);
  overflow-y: auto;
  overflow-x: hidden;
  color: var(--color-text);
  font-size: var(--text-sm);
  line-height: 1.7;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.modal__body::-webkit-scrollbar {
  width: 8px;
}

.modal__body::-webkit-scrollbar-track {
  background: transparent;
}

.modal__body::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

.modal__body:focus {
  outline: none;
}

.modal__body h4 {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 700;
  color: #ffffff;
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.modal__body h4:first-child {
  margin-top: 0;
}

.modal__body h4::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.6);
}

.modal__body p {
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.modal__body ul {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.modal__body ul li {
  position: relative;
  padding-left: var(--space-5);
  color: var(--color-text);
  font-size: var(--text-sm);
  line-height: 1.65;
}

.modal__body ul li::before {
  content: "▸";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-primary);
  font-size: 0.85em;
  line-height: 1.65;
}

.modal__body strong {
  color: #ffffff;
  font-weight: 600;
}

.modal__body em {
  color: var(--color-primary);
  font-style: normal;
  font-weight: 500;
}

.modal__body code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  padding: 1px 6px;
  background: var(--color-primary-dim);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: var(--radius-sm);
  color: var(--color-primary-hover);
}

/* Body lock when modal is open */
body.modal-open {
  overflow: hidden;
}

@media (max-width: 600px) {
  .modal {
    padding: 0;
    align-items: flex-end;
  }

  .modal__dialog {
    max-width: 100%;
    max-height: 92dvh;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    transform: translateY(100%);
    /* Override desktop initial state — keep dialog fully opaque so
       the slide-up animation is visible on mobile. */
    opacity: 1;
  }

  .modal--open .modal__dialog {
    transform: translateY(0);
  }

  .modal__header {
    padding: var(--space-5) var(--space-5) var(--space-4);
  }

  .modal__title {
    font-size: var(--text-lg);
    padding-right: var(--space-12);
  }

  .modal__body {
    padding: var(--space-5);
  }
}