/* --- FONTS --- */
@font-face {
  font-family: 'Montserrat';
  src: url('../assets/regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Montserrat';
  src: url('../assets/semibold.ttf') format('truetype');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

/* --- VARIABLES --- */
:root {
  --color-bg: #FFFFFF;
  --color-surface: #F5F3F4;
  --color-text-primary: #231F20;
  --color-text-secondary: #6B6B6B;
  --color-accent: #2D6BE4;
  --color-modal-overlay: rgba(245, 243, 244, 0.94);

  --font-family: 'Montserrat', system-ui, -apple-system, sans-serif;
  --font-weight-regular: 400;
  --font-weight-semibold: 600;
}

/* --- DARK MODE --- */
html.dark {
  --color-bg: #231F20;
  --color-surface: #161314;
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #6B6B6B;
  --color-accent: #2D6BE4;
  --color-modal-overlay: rgba(35, 31, 32, 0.9);
}

html.dark .wordmark-light {
  display: none;
}

html.dark .wordmark-dark {
  display: block;
}

html.dark .logo-light {
  display: none;
}

html.dark .logo-dark {
  display: block;
}

html.dark .theme-toggle-label {
  background: var(--color-text-secondary);
  border-color: var(--color-text-secondary);
  opacity: 0.55;
}

html.dark .theme-toggle-label::after {
  transform: translateX(0);
}

html.dark .theme-toggle-label:hover {
  opacity: 1;
}

/* --- SVG THEME VARIANTS --- */
/* Two-class selectors (0,2,0) beat single-class layout rules like .hero-logo (0,1,0) */
.hero-logo.logo-dark,
.header-wordmark.wordmark-dark {
  display: none;
}

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

html {
  scroll-behavior: smooth;
}

/* --- BASE --- */
body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-regular);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* --- ANIMATIONS --- */
@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(14px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- HEADER --- */
header {
  border-bottom: 1px solid var(--color-surface);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-wordmark {
  height: 28px;
  width: auto;
  display: block;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* --- THEME TOGGLE --- */
.theme-toggle-input {
  position: absolute;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
}

.theme-toggle-label {
  display: inline-block;
  width: 38px;
  height: 20px;
  background: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: 10px;
  position: relative;
  cursor: pointer;
  flex-shrink: 0;
  opacity: 1;
  transition: background 0.25s ease, border-color 0.25s ease, opacity 0.25s ease;
}

.theme-toggle-label:hover {
  opacity: 0.85;
}

.theme-toggle-label::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  background: #FFFFFF;
  border-radius: 50%;
  transform: translateX(18px);
  transition: transform 0.25s ease;
}

/* --- MAIN --- */
main {
  flex: 1;
}

/* --- CONTAINER --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

/* --- HERO --- */
.hero {
  padding: 100px 2rem 80px;
  text-align: center;
  animation: fade-in 0.8s ease both;
}

.hero-logo {
  display: block;
  margin: 0 auto 2.75rem;
  height: 72px;
  width: auto;
}

.hero h1 {
  font-size: clamp(1.75rem, 3.5vw, 3rem);
  font-weight: var(--font-weight-regular);
  line-height: 1.2;
  color: var(--color-text-primary);
  max-width: 720px;
  margin: 0 auto 1.25rem;
}

.hero-tagline {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  max-width: 540px;
  margin: 0 auto 2.5rem;
  line-height: 1.75;
}

.cta-group {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- BUTTONS --- */
.btn {
  display: inline-block;
  padding: 13px 32px;
  font-family: var(--font-family);
  font-weight: var(--font-weight-semibold);
  font-size: 0.725rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  outline: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: #4a82ee;
  border-color: #4a82ee;
}

.btn-outline {
  background: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-surface);
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-close {
  padding: 11px 24px;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
  border-color: rgba(107, 107, 107, 0.25);
  background: transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.btn-close:hover {
  color: var(--color-text-primary);
  border-color: var(--color-text-secondary);
}

/* --- STACK LIST --- */
.stack-list {
  border-top: 1px solid var(--color-surface);
  border-bottom: 1px solid var(--color-surface);
  padding: 1.5rem 2rem;
}

.stack-list-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.stack-item {
  font-size: 0.625rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-surface);
  padding: 6px 14px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.stack-item:hover {
  color: var(--color-text-primary);
  border-color: var(--color-text-secondary);
}

/* --- SECTIONS --- */
.section {
  padding: 80px 0;
}

.section-header {
  margin-bottom: 3rem;
}

.section-label {
  display: block;
  font-size: 0.625rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.6rem;
}

.section-title {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  font-weight: var(--font-weight-regular);
  color: var(--color-text-primary);
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-surface);
}

/* --- FEATURE GRID & CARDS --- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-surface);
}

.card {
  background: var(--color-bg);
  padding: 2rem 2.25rem;
  transition: background 0.2s ease;
}

.card:hover {
  background: var(--color-surface);
}

.card-icon {
  display: inline;
  font-size: 0.7rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-right: 0.5em;
}

.card h3 {
  font-size: 0.925rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: 0.6rem;
}

.card p,
.card ul li {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
}

.card ul {
  list-style: none;
  margin-top: 0.5rem;
}

.card ul li {
  padding-left: 1em;
  position: relative;
}

.card ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-size: 0.75rem;
}

/* --- MODAL (pure CSS via :target — zero JavaScript) --- */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--color-modal-overlay);
  justify-content: center;
  align-items: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.modal-overlay:target {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
}

.modal-content {
  position: relative;
  z-index: 1;
  background: var(--color-surface);
  border: 1px solid rgba(45, 107, 228, 0.25);
  padding: 2.5rem;
  width: 90%;
  max-width: 460px;
}

.modal-title {
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: 0.4rem;
}

.modal-subtitle {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.75rem;
  line-height: 1.6;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.625rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.form-input {
  width: 100%;
  padding: 11px 14px;
  background: var(--color-bg);
  border: 1px solid rgba(107, 107, 107, 0.25);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-weight: var(--font-weight-regular);
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.form-input::placeholder {
  color: var(--color-text-secondary);
  opacity: 0.55;
}

.form-input:focus {
  border-color: var(--color-accent);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 0.75rem;
  margin-top: 2rem;
}

/* --- FOOTER --- */
footer {
  border-top: 1px solid var(--color-surface);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-copy {
  font-size: 0.725rem;
  letter-spacing: 0.07em;
  color: var(--color-text-secondary);
}

/* --- HIRING DIRECTORY --- */
.position-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-surface);
}

.position-card {
  background: var(--color-bg);
  padding: 2rem 2.25rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  transition: background 0.2s ease;
}

.position-card:hover {
  background: var(--color-surface);
}

.position-body {
  flex: 1;
  min-width: 0;
}

.position-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 0.75rem;
}

.position-tag {
  font-size: 0.575rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-surface);
  padding: 4px 10px;
}

.position-title {
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: 0.6rem;
}


.position-excerpt {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
  max-width: 640px;
}

.position-action {
  flex-shrink: 0;
  align-self: center;
}

/* --- JOB DETAIL --- */
.intro-block {
  background: var(--color-surface);
  padding: 2.5rem;
  border: 1px solid var(--color-surface);
  font-size: 0.925rem;
  color: var(--color-text-secondary);
  line-height: 1.85;
  max-width: 840px;
}

.cta-section {
  padding: 80px 0;
  border-top: 1px solid var(--color-surface);
}

.cta-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.cta-text h2 {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: var(--font-weight-regular);
  color: var(--color-text-primary);
  margin-bottom: 0.4rem;
}

.cta-text p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  .hero {
    padding: 60px 1.5rem 60px;
  }

  .hero-logo {
    height: 52px;
    margin-bottom: 2rem;
  }

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

  .header-inner {
    padding: 1.25rem 1.5rem;
  }

  .stack-list {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .container {
    padding: 0 1.5rem;
  }

  .footer-inner {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
    padding: 1.75rem 1.5rem;
  }

  .position-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .position-action {
    align-self: flex-start;
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 0 1.5rem;
  }
}