/* ==========================================================================
   Flashlight 3D — styles.css
   ========================================================================== */

:root {
  /* Background */
  --bg-base: #05011C;
  --bg-elevated: rgba(15, 15, 48, 0.6);
  --bg-elevated-strong: rgba(12, 12, 40, 0.85);

  /* Accents */
  --accent-green: #BFFF85;
  --accent-green-dim: rgba(191, 255, 133, 0.7);
  --accent-orange: #FFB44D;
  --accent-orange-dim: rgba(255, 180, 77, 0.7);

  /* Text */
  --text-primary: #EEF5FF;
  --text-secondary: #B7C4D9;
  --text-dim: #808AA3;

  /* Borders */
  --border-subtle: rgba(191, 255, 133, 0.12);
  --border-accent: rgba(191, 255, 133, 0.35);
  --border-neutral: rgba(255, 255, 255, 0.08);

  /* Glows */
  --glow-green-sm: 0 0 12px rgba(191, 255, 133, 0.35);
  --glow-green-md: 0 0 20px rgba(191, 255, 133, 0.4), 0 0 40px rgba(191, 255, 133, 0.2);
  --glow-green-lg: 0 0 32px rgba(191, 255, 133, 0.5), 0 0 64px rgba(191, 255, 133, 0.25);
  --glow-orange-sm: 0 0 12px rgba(255, 180, 77, 0.35);
  --glow-orange-md: 0 0 20px rgba(255, 180, 77, 0.4), 0 0 40px rgba(255, 180, 77, 0.2);

  /* Layout */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --content-max: 1160px;
  --prose-max: 760px;
  --nav-h: 72px;

  /* Type scale */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-body: 1.08rem;
  --text-lg: 1.17rem;
  --text-xl: 1.5rem;
  --text-3xl: clamp(2rem, 3.8vw, 3rem);
  --text-4xl: clamp(2.7rem, 6vw, 4.7rem);
  --text-pullquote: clamp(2rem, 4vw, 3rem);
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: var(--text-body);
  line-height: 1.78;
  color: var(--text-primary);
  background:
    radial-gradient(circle at 22% 18%, rgba(191, 255, 133, 0.10), transparent 28%),
    radial-gradient(circle at 78% 12%, rgba(255, 180, 77, 0.10), transparent 26%),
    radial-gradient(circle at 50% 85%, rgba(191, 255, 133, 0.06), transparent 30%),
    linear-gradient(180deg, #040116 0%, #07022A 45%, #05011C 100%);
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(191, 255, 133, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(191, 255, 133, 0.025) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.8;
}

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

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4 { margin: 0; font-family: 'Space Grotesk', sans-serif; }

h1 {
  font-size: var(--text-4xl);
  line-height: 0.98;
  letter-spacing: -0.04em;
  font-weight: 700;
  color: var(--text-primary);
  text-wrap: balance;
}

h2 {
  font-size: var(--text-3xl);
  line-height: 1.02;
  letter-spacing: -0.03em;
  font-weight: 700;
  color: var(--text-primary);
  text-wrap: balance;
}

h3 {
  font-size: var(--text-xl);
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: 600;
}

p { margin: 0 0 1.2rem; }
p:last-child { margin-bottom: 0; }

a { color: var(--accent-green); }
a:hover { text-shadow: var(--glow-green-sm); }

.prose {
  max-width: var(--prose-max);
  color: var(--text-secondary);
}
.prose strong { color: var(--text-primary); font-weight: 600; }
.prose h2 + p,
.prose h2 + .lede,
.prose h1 + p { margin-top: 1.5rem; }

.prose ul {
  margin: 0 0 1.2rem;
  padding-left: 1.25rem;
  color: var(--text-secondary);
}
.prose li { margin-bottom: 0.6rem; line-height: 1.7; }
.prose li strong { color: var(--text-primary); }

.lede {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--text-primary);
  max-width: 52ch;
  font-weight: 500;
}

.hl-green { color: var(--accent-green); text-shadow: var(--glow-green-sm); }
.hl-orange { color: var(--accent-orange); text-shadow: var(--glow-orange-sm); }

/* Eyebrow */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-green);
  margin-bottom: 1.25rem;
}

@keyframes eyebrow-pulse {
  0%, 100% { box-shadow: 0 0 0 rgba(191, 255, 133, 0); }
  50% { box-shadow: 0 0 16px rgba(191, 255, 133, 0.15); }
}
.hero-eyebrow { animation: eyebrow-pulse 4s ease-in-out infinite; }

/* Pullquote */
.pullquote {
  font-family: 'Space Grotesk', sans-serif;
  font-size: var(--text-pullquote);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.02em;
  text-align: center;
  text-wrap: balance;
  color: var(--accent-green);
  text-shadow: var(--glow-green-md);
  max-width: 22ch;
  margin: 4rem auto;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
  width: min(var(--content-max), calc(100% - 2.5rem));
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

@media (min-width: 768px) {
  .container { width: min(var(--content-max), calc(100% - 4rem)); }
}

section {
  padding: 4rem 0;
  position: relative;
  z-index: 1;
}
@media (min-width: 768px) {
  section { padding: 5rem 0; }
}

.hero {
  padding: 4rem 0 3rem;
  min-height: 75vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  z-index: 1;
}

main { position: relative; z-index: 1; }

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent-green);
  color: #05011C;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  z-index: 100;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* Visually hidden utility */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0);
  white-space: nowrap; border: 0;
}

/* Focus states */
a:focus-visible,
button:focus-visible,
summary:focus-visible,
.nav-toggle:focus-visible {
  outline: 2px solid var(--accent-green);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ==========================================================================
   Info bar
   ========================================================================== */

.info-bar {
  background: rgba(5, 1, 28, 0.92);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.5rem 1.5rem;
  position: relative;
  z-index: 2;
}

.info-bar-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-green);
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

@media (min-width: 768px) {
  .info-bar-inner { justify-content: flex-start; gap: 1.5rem; }
}

/* ==========================================================================
   Header / nav
   ========================================================================== */

header.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(5, 1, 28, 0.82);
  border-bottom: 1px solid var(--border-neutral);
}

header .inner {
  max-width: var(--content-max);
  margin: 0 auto;
  min-height: var(--nav-h);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo-link {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-link img {
  height: 44px;
  width: auto;
  display: block;
  filter: drop-shadow(0 0 12px rgba(191, 255, 133, 0.2));
}

nav ul {
  display: flex;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: color 160ms ease;
}

nav a:hover,
nav a[aria-current="page"] {
  color: var(--accent-green);
  text-shadow: var(--glow-green-sm);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--accent-green);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  min-height: 44px;
  min-width: 44px;
}

/* Mobile nav */
@media (max-width: 767px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  nav#primary-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(5, 1, 28, 0.97);
    border-bottom: 1px solid var(--border-subtle);
    border-top: 1px solid var(--border-neutral);
    padding: 1rem 1.5rem;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
  }
  nav#primary-nav.open { display: block; }
  nav#primary-nav ul {
    flex-direction: column;
    gap: 0;
  }
  nav#primary-nav li { border-bottom: 1px solid var(--border-neutral); }
  nav#primary-nav li:last-child { border-bottom: none; }
  nav#primary-nav a {
    display: block;
    padding: 0.9rem 0;
    font-size: var(--text-base);
    min-height: 44px;
  }
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.5rem;
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: var(--text-base);
  text-decoration: none;
  cursor: pointer;
  min-height: 44px;
  line-height: 1;
}

.btn-primary {
  background: var(--accent-green);
  color: #05011C;
  border: 1px solid var(--accent-green);
  transition: transform 180ms ease, box-shadow 180ms ease;
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--glow-green-md);
  text-shadow: none;
}

.btn-secondary {
  background: transparent;
  color: var(--accent-green);
  border: 1px solid var(--accent-green);
  transition: background 180ms ease, box-shadow 180ms ease;
}
.btn-secondary:hover {
  background: rgba(191, 255, 133, 0.08);
  box-shadow: var(--glow-green-sm);
  text-shadow: none;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

/* ==========================================================================
   Home: hero
   ========================================================================== */

.hero-inner { max-width: var(--content-max); }

.hero-headline {
  font-size: var(--text-4xl);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  max-width: 18ch;
  margin: 0 0 1.5rem;
  text-wrap: balance;
}

.hero-tagline {
  font-size: var(--text-4xl);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  max-width: 20ch;
  margin: 0;
  text-wrap: balance;
}

/* ==========================================================================
   Cards grid (Home Section 2)
   ========================================================================== */

.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

@media (min-width: 768px) {
  .cards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
  }
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color 250ms ease, transform 250ms ease, background 250ms ease;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
  background: var(--bg-elevated-strong);
}

.card-icon {
  width: 36px;
  height: 36px;
  color: var(--accent-green);
  filter: drop-shadow(var(--glow-green-sm));
  margin-bottom: 1rem;
  display: block;
}

.card h3 {
  color: var(--accent-green);
  margin-bottom: 0.75rem;
  font-size: var(--text-xl);
}

.card p {
  color: var(--text-secondary);
  font-size: var(--text-base);
  line-height: 1.7;
  margin: 0;
}

/* ==========================================================================
   Section heading block
   ========================================================================== */

.section-heading { max-width: var(--prose-max); margin-bottom: 1.75rem; }
.section-heading h2 { margin-bottom: 0; }

.section-inner { max-width: var(--prose-max); }

.section-inner p + p { margin-top: 0; }

/* ==========================================================================
   Internship: accordion
   ========================================================================== */

.roles-list { margin-top: 2rem; }

.role-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 0.875rem;
  overflow: hidden;
  transition: border-color 250ms ease;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.role-card[open] { border-color: var(--border-accent); }

.role-card summary {
  padding: 1.1rem 1.5rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: var(--text-lg);
  color: var(--accent-green);
  list-style: none;
  min-height: 44px;
}
.role-card summary::-webkit-details-marker { display: none; }

.role-chevron {
  transition: transform 250ms ease;
  color: var(--accent-green);
  font-size: 1rem;
  flex-shrink: 0;
}
.role-card[open] .role-chevron { transform: rotate(180deg); }

.role-body {
  padding: 0 1.5rem 1.25rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.sub-roles {
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent-orange);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  margin-top: 0.75rem;
  line-height: 1.6;
}

/* Internship meta line */
.meta-line {
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent-green);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  margin: 1.5rem 0 2rem;
  text-transform: uppercase;
}

/* ==========================================================================
   About page layout
   ========================================================================== */

.about-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .about-hero {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 3rem;
  }
  .about-hero .about-headshot { order: 2; }
  .about-hero .about-intro { order: 1; }
}

.headshot {
  width: 100%;
  max-width: 340px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  display: block;
}

@media (max-width: 767px) {
  .headshot { margin: 0 auto; }
}

/* ==========================================================================
   Footer
   ========================================================================== */

footer.site-footer {
  padding: 3rem 1.5rem 2rem;
  border-top: 1px solid var(--border-subtle);
  margin-top: 5rem;
  text-align: center;
  color: var(--text-secondary);
  font-size: var(--text-sm);
  position: relative;
  z-index: 1;
}

footer.site-footer .footer-line {
  margin: 0 0 0.5rem;
}

footer.site-footer a {
  color: var(--accent-green);
  text-decoration: none;
}

footer.site-footer a:hover { text-shadow: var(--glow-green-sm); }

footer .disclaimer {
  color: var(--text-dim);
  font-size: var(--text-xs);
  margin: 1.5rem auto 0;
  font-style: italic;
  max-width: 60ch;
}

footer .copyright {
  color: var(--text-dim);
  font-size: var(--text-xs);
  margin-top: 1.25rem;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.08em;
}

/* ==========================================================================
   Reduced motion
   ========================================================================== */

@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;
  }
}