/* ===========================================
   Custom Properties
   =========================================== */
:root {
  /* Colors */
  --bg: #0f1724;
  --bg-raised: #162032;
  --bg-section-alt: #111d2e;
  --accent: #0ea5a4;
  --accent-glow: rgba(14, 165, 164, 0.15);
  --text: #e6eef8;
  --text-muted: #7b8fa3;
  --border: #1e2d42;

  /* Category accents */
  --cat-strategist: #0ea5a4;
  --cat-technologist: #6366f1;
  --cat-maker: #f59e0b;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Typography */
  --font-display: "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;

  /* Sizes */
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.25);
  --shadow-card-hover: 0 8px 32px rgba(0, 0, 0, 0.35);
  --transition-fast: 150ms ease;
  --transition: 250ms ease;
}

/* ===========================================
   Light Theme (joke mode)
   =========================================== */
body.light-theme {
  --bg: #f5f7fa;
  --bg-raised: #ffffff;
  --bg-section-alt: #edf0f5;
  --text: #1a1a2e;
  --text-muted: #5a6577;
  --border: #d1d9e6;
  --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.08);
  --shadow-card-hover: 0 8px 32px rgba(0, 0, 0, 0.12);
  transition: none;
}

body.light-theme .hero {
  background:
    radial-gradient(ellipse at 25% 0%, rgba(14, 165, 164, 0.05) 0%, transparent 50%),
    radial-gradient(ellipse at 75% 20%, rgba(99, 102, 241, 0.04) 0%, transparent 50%),
    var(--bg);
}

body.light-theme .hero__name {
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

/* ===========================================
   Theme Toggle
   =========================================== */
.theme-toggle {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  z-index: 10;
  background: rgba(22, 32, 50, 0.6);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1;
  padding: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast),
    background var(--transition-fast);
}

.theme-toggle:hover {
  color: var(--text);
  border-color: rgba(14, 165, 164, 0.5);
  background: rgba(22, 32, 50, 0.8);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

body.light-theme .theme-toggle {
  background: rgba(255, 255, 255, 0.7);
}

body.light-theme .bg-switcher__select {
  background: rgba(255, 255, 255, 0.7) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%235a6577' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 4.5l3 3 3-3'/%3E%3C/svg%3E") no-repeat right 0.6rem center;
}

body.light-theme .bg-switcher__select:hover {
  background-color: rgba(255, 255, 255, 0.9);
}

/* ===========================================
   Theme Joke Overlay
   =========================================== */
.theme-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.55);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.theme-overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.theme-overlay.is-fading {
  opacity: 0;
}

.theme-overlay__text {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 700;
  color: #fff;
  text-align: center;
  padding: var(--space-xl);
  text-shadow:
    0 2px 8px rgba(0, 0, 0, 0.6),
    0 0 20px rgba(0, 0, 0, 0.4);
  animation: overlay-pop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.theme-overlay__text.is-surrender {
  color: #fbbf24;
  text-shadow:
    0 2px 12px rgba(251, 191, 36, 0.5),
    0 0 30px rgba(251, 191, 36, 0.3),
    0 4px 16px rgba(0, 0, 0, 0.5);
  animation: overlay-surrender 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes overlay-pop {
  from {
    opacity: 0;
    transform: scale(0.7);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes overlay-surrender {
  0% {
    opacity: 0;
    transform: scale(0.5) rotate(-3deg);
  }
  60% {
    opacity: 1;
    transform: scale(1.08) rotate(1deg);
  }
  100% {
    opacity: 1;
    transform: scale(1) rotate(0deg);
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-user-select: none;
  user-select: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

/* ===========================================
   Skip Link
   =========================================== */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  background: var(--accent);
  color: var(--bg);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius);
  font-weight: 600;
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-md);
}

/* ===========================================
   Hero
   =========================================== */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-3xl) var(--space-lg) var(--space-2xl);
  background:
    radial-gradient(ellipse at 25% 0%, rgba(14, 165, 164, 0.07) 0%, transparent 50%),
    radial-gradient(ellipse at 75% 20%, rgba(99, 102, 241, 0.05) 0%, transparent 50%),
    var(--bg);
  overflow: hidden;
}

#hero-particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* ===========================================
   Background Switcher
   =========================================== */
.bg-switcher {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  z-index: 10;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.bg-switcher__select {
  appearance: none;
  -webkit-appearance: none;
  background: rgba(22, 32, 50, 0.6) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%237b8fa3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 4.5l3 3 3-3'/%3E%3C/svg%3E") no-repeat right 0.6rem center;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.3rem 1.8rem 0.3rem 0.6rem;
  border-radius: var(--radius);
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast);
  min-height: 44px;
}

.bg-switcher__select:hover {
  color: var(--text);
  border-color: rgba(14, 165, 164, 0.5);
  background-color: rgba(22, 32, 50, 0.8);
}

.bg-switcher__select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.bg-switcher__select option {
  background: var(--bg-raised);
  color: var(--text);
}

.bg-switcher__eye {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: rgba(22, 32, 50, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.bg-switcher__eye svg {
  width: 18px;
  height: 18px;
}

.bg-switcher__eye:hover {
  color: var(--text);
  border-color: rgba(14, 165, 164, 0.5);
  background: rgba(22, 32, 50, 0.8);
}

.bg-switcher__eye:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

body.light-theme .bg-switcher__eye {
  background: rgba(255, 255, 255, 0.7);
}

/* "Try me" hint for background selector */
.bg-hint {
  position: absolute;
  top: calc(var(--space-md) + 52px);
  left: calc(var(--space-md) + 4px);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  opacity: 0;
  animation: bgHintIn 0.5s ease 0.8s forwards;
  pointer-events: none;
  transition: opacity 0.5s ease;
}

.bg-hint svg {
  width: 14px;
  height: 14px;
  animation: bgHintBounce 1s ease-in-out infinite;
}

@keyframes bgHintIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 0.7; transform: translateY(0); }
}

@keyframes bgHintBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

/* Matrix cursor — white rabbit (follow the white rabbit) */
.hero--matrix-cursor {
  cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='32'%3E%3Cg fill='white' stroke='%23000' stroke-width='0.5'%3E%3Crect x='7' y='0' width='3' height='9' rx='1.5'/%3E%3Crect x='14' y='0' width='3' height='9' rx='1.5'/%3E%3Ccircle cx='12' cy='13' r='5.5'/%3E%3Cellipse cx='12' cy='22' rx='6' ry='5'/%3E%3Ccircle cx='6' cy='21' r='2.5'/%3E%3C/g%3E%3Ccircle cx='10' cy='12' r='1' fill='%23f00'/%3E%3Ccircle cx='14' cy='12' r='1' fill='%23f00'/%3E%3C/svg%3E") 12 16, crosshair;
}

.hero--matrix-cursor.hero--immersive {
  cursor: none;
}

/* Asteroids cursor — hide in immersive (TIE Fighter drawn on canvas) */
.hero--asteroids-cursor.hero--immersive {
  cursor: none;
}

/* Fruit Ninja cursor — hide in immersive (blade trail drawn on canvas) */
.hero--ninja-cursor.hero--immersive {
  cursor: none;
}

/* Immersive mode — hide hero content to enjoy backgrounds */
.hero--immersive .hero__inner,
.hero--immersive .cards {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.hero__inner,
.cards {
  transition: opacity 0.3s ease;
}

.hero__inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 640px;
  margin-bottom: var(--space-3xl);
}

.hero__name {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__tagline {
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-sm);
}

.hero__contact-link {
  display: inline-block;
  margin-top: var(--space-xl);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  padding: var(--space-sm) var(--space-lg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-raised);
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast);
}

.hero__contact-link:hover {
  border-color: var(--accent);
  text-decoration: none;
}

/* ===========================================
   Cards Navigation
   =========================================== */
.cards {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

.cards__row-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
  padding-left: var(--space-xs);
}

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

/* ===========================================
   Card
   =========================================== */
.card {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-lg);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  text-decoration: none;
  color: var(--text);
  position: relative;
  overflow: hidden;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    border-color var(--transition);
  min-height: 44px;
}

/* Category top accent bar */
.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--cat-strategist);
  transition: height var(--transition-fast);
}

.card[data-category="technologist"]::before {
  background: var(--cat-technologist);
}

.card[data-category="maker"]::before {
  background: var(--cat-maker);
}

.card {
  --_cat: var(--cat-strategist);
}

.card[data-category="technologist"] {
  --_cat: var(--cat-technologist);
}

.card[data-category="maker"] {
  --_cat: var(--cat-maker);
}

.card:hover,
.card:focus-visible {
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--_cat);
  text-decoration: none;
}

.card:hover::before,
.card:focus-visible::before {
  height: 4px;
}

.card:focus {
  outline: none;
}

.card:focus-visible {
  outline: 2px solid var(--_cat);
  outline-offset: 2px;
}

.card.is-active {
  border-color: var(--_cat);
  box-shadow: 0 0 0 1px var(--_cat), var(--shadow-card);
}

.card__icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  opacity: 0.7;
}

.card[data-category="strategist"] .card__icon {
  color: var(--cat-strategist);
}

.card[data-category="technologist"] .card__icon {
  color: var(--cat-technologist);
}

.card[data-category="maker"] .card__icon {
  color: var(--cat-maker);
}

.card__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.3;
}

.card__desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ===========================================
   Sections
   =========================================== */
.section {
  padding: var(--space-4xl) var(--space-lg);
  border-top: 1px solid var(--border);
  scroll-margin-top: var(--space-lg);
}

.section:nth-child(even) {
  background: var(--bg-section-alt);
}

.section:focus {
  outline: none;
}

.section__title:focus {
  outline: none;
}

.section__inner {
  max-width: 720px;
  margin: 0 auto;
}

.section__header {
  margin-bottom: var(--space-2xl);
}

.section__label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: var(--space-xs) var(--space-sm);
  border-radius: 4px;
  margin-bottom: var(--space-md);
}

.section[data-category="strategist"] .section__label {
  color: var(--cat-strategist);
  background: rgba(14, 165, 164, 0.1);
}

.section[data-category="technologist"] .section__label {
  color: var(--cat-technologist);
  background: rgba(99, 102, 241, 0.1);
}

.section[data-category="maker"] .section__label {
  color: var(--cat-maker);
  background: rgba(245, 158, 11, 0.1);
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-sm);
}

.section__subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.5;
}

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

.section__highlights li {
  position: relative;
  padding-left: var(--space-lg);
  color: var(--text-muted);
  line-height: 1.6;
}

.section__highlights li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.section[data-category="technologist"] .section__highlights li::before {
  background: var(--cat-technologist);
}

.section[data-category="maker"] .section__highlights li::before {
  background: var(--cat-maker);
}


/* ===========================================
   Section Explore Button
   =========================================== */
.section__explore {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-2xl);
  padding: var(--space-sm) var(--space-lg);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition:
    border-color var(--transition),
    transform var(--transition);
  min-height: 44px;
}

.section__explore:hover {
  border-color: var(--accent);
  transform: translateX(4px);
}

.section__explore:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.section__explore-icon {
  width: 18px;
  height: 18px;
  color: var(--accent);
  transition: transform var(--transition);
}

.section__explore:hover .section__explore-icon {
  transform: translateX(3px);
}

/* ===========================================
   Detail Panel (slide-in from right)
   =========================================== */
.detail-panel {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--bg);
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.detail-panel.is-open {
  transform: translateX(0);
}

.detail-panel__header {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.detail-panel__back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition:
    border-color var(--transition-fast),
    transform var(--transition-fast);
  min-height: 44px;
}

.detail-panel__back svg {
  width: 18px;
  height: 18px;
}

.detail-panel__back:hover {
  border-color: var(--accent);
  transform: translateX(-2px);
}

.detail-panel__back:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.detail-panel__label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.detail-panel__content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-lg) var(--space-4xl);
}

.detail-panel__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-2xl);
}

.detail-panel__content p {
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
}

.detail-panel__gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin: var(--space-2xl) 0;
}

.detail-panel__image-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  aspect-ratio: 16 / 9;
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
  font-size: 0.85rem;
}

.detail-panel__image-placeholder svg {
  width: 32px;
  height: 32px;
  opacity: 0.5;
}

@media (min-width: 640px) {
  .detail-panel__gallery {
    grid-template-columns: 1fr 1fr;
  }
}

/* Prevent body scroll when panel is open */
body.detail-open {
  overflow: hidden;
}

/* ===========================================
   Contact Section
   =========================================== */
.section--contact .section__header {
  text-align: center;
}

.contact-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  color: var(--text);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    border-color var(--transition);
  min-height: 44px;
}

.contact-link:hover,
.contact-link:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--accent);
  text-decoration: none;
}

.contact-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.contact-link__icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--accent);
}

.contact-link__label {
  white-space: nowrap;
}

/* ===========================================
   Footer
   =========================================== */
.footer {
  border-top: 1px solid var(--border);
  padding: var(--space-2xl) var(--space-lg);
}

.footer__inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.footer__text {
  font-size: 0.8rem;
  color: var(--text-muted);
}

#footer-direction {
  display: inline-block;
  transition: opacity 0.15s ease;
}

#footer-direction.is-switching {
  opacity: 0;
}

.footer__name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: var(--space-xs);
}

.footer__joke {
  display: block;
  margin-top: var(--space-sm);
  opacity: 0;
  font-style: italic;
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: opacity 0.3s ease;
}

.footer:hover .footer__joke {
  opacity: 0.5;
}

/* ===========================================
   Ping Packet-Loss Overlay (immersive mode)
   =========================================== */
.ping-packet-overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.ping-packet-overlay.is-visible {
  opacity: 1;
}

.ping-packet-overlay.is-fading {
  opacity: 0;
}

.ping-packet-overlay__text {
  font-family: 'Courier New', monospace;
  font-size: clamp(1.5rem, 5vw, 3rem);
  font-weight: 700;
  color: #39ff14;
  text-shadow:
    0 2px 12px rgba(57, 255, 20, 0.5),
    0 0 30px rgba(57, 255, 20, 0.3),
    0 4px 16px rgba(0, 0, 0, 0.5);
  animation: overlay-surrender 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.light-theme .ping-packet-overlay__text {
  color: #006600;
  text-shadow:
    0 2px 12px rgba(0, 102, 0, 0.5),
    0 0 30px rgba(0, 102, 0, 0.3),
    0 4px 16px rgba(0, 0, 0, 0.3);
}

/* ===========================================
   Gravity Black Hole Overlay
   =========================================== */
.gravity-blackhole-overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.gravity-blackhole-overlay.is-visible {
  opacity: 1;
}

.gravity-blackhole-overlay.is-fading {
  opacity: 0;
}

.gravity-blackhole-overlay__text {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 5vw, 3rem);
  font-weight: 700;
  color: #fbbf24;
  text-align: center;
  padding: 0 1rem;
  text-shadow:
    0 2px 12px rgba(251, 191, 36, 0.5),
    0 0 30px rgba(251, 191, 36, 0.3),
    0 4px 16px rgba(0, 0, 0, 0.5);
  animation: overlay-surrender 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

/* ===========================================
   Scroll reveal animation
   =========================================== */
.section__inner {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.section.is-revealed .section__inner {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================================
   Responsive: Tablet (640px+)
   =========================================== */
@media (min-width: 640px) {
  .cards__pair {
    grid-template-columns: 1fr 1fr;
  }

  .card {
    padding: var(--space-xl);
  }
}

/* ===========================================
   Responsive: Desktop (900px+)
   =========================================== */
@media (min-width: 900px) {
  .hero {
    padding: var(--space-4xl) var(--space-xl) var(--space-3xl);
  }

  .hero__inner {
    margin-bottom: var(--space-4xl);
  }

  .cards {
    max-width: 1000px;
  }

  .section {
    padding: var(--space-4xl) var(--space-xl);
  }

  .section__inner {
    max-width: 800px;
  }
}

/* ===========================================
   Responsive: Wide (1200px+)
   =========================================== */
@media (min-width: 1200px) {
  .cards {
    max-width: 1100px;
  }
}

/* ===========================================
   Reduced Motion
   =========================================== */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .card {
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  }

  .card:hover,
  .card:focus-visible {
    transform: none;
  }

  .section__inner {
    opacity: 1;
    transform: none;
    transition: none;
  }
}