/* ============================================================
   CSS Custom Properties
   ============================================================ */
:root {
  --color-bg: #F7F8FA;
  --color-surface: #FFFFFF;
  --color-text: #1A1D23;
  --color-text-muted: #5A6070;
  --color-accent: #0E7C6B;
  --color-accent-hover: #0B6357;
  --color-hero-bg: #111827;
  --color-hero-text: #F0F4F8;
  --color-border: #E2E6ED;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Monaco, Consolas, monospace;

  --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.07), 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-card-hover: 0 4px 12px rgba(0, 0, 0, 0.12), 0 2px 6px rgba(0, 0, 0, 0.06);
  --radius: 8px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  margin: 0;
  line-height: 1.2;
}

p {
  margin: 0;
}

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

a:hover {
  text-decoration: underline;
}

/* ============================================================
   Layout Primitives
   ============================================================ */
.section-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ============================================================
   Navigation
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.nav-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 1.25rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

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

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color 150ms ease;
}

.nav-links a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  background-color: var(--color-hero-bg);
  color: var(--color-hero-text);
  padding: 5rem 1.25rem 4.5rem;
  text-align: center;
}

.hero-inner {
  max-width: 680px;
  margin: 0 auto;
}

.hero-name {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-hero-text);
  margin-bottom: 0.5rem;
}

.hero-title {
  font-size: 1.25rem;
  font-weight: 400;
  color: #94A3B8;
  margin-bottom: 1.25rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.hero-tagline {
  font-size: 1.15rem;
  line-height: 1.6;
  color: #CBD5E1;
  margin-bottom: 2.5rem;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  gap: 0.875rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: background-color 150ms ease, color 150ms ease, border-color 150ms ease;
  min-height: 44px;
}

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

.btn--primary:hover {
  background-color: var(--color-accent-hover);
  text-decoration: none;
  color: #FFFFFF;
}

.btn--outline {
  background-color: transparent;
  color: var(--color-hero-text);
  border: 1.5px solid rgba(240, 244, 248, 0.3);
}

.btn--outline:hover {
  border-color: rgba(240, 244, 248, 0.7);
  background-color: rgba(240, 244, 248, 0.07);
  text-decoration: none;
  color: var(--color-hero-text);
}

.btn--outline-dark {
  background-color: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}

.btn--outline-dark:hover {
  background-color: var(--color-accent);
  color: #FFFFFF;
  text-decoration: none;
}

/* ============================================================
   Sections
   ============================================================ */
.section {
  padding: 4rem 0;
  background-color: var(--color-surface);
}

.section--alt {
  background-color: var(--color-bg);
}

.section-heading {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.section-subtext {
  font-size: 0.975rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  max-width: 620px;
  margin-top: -0.75rem;
  margin-bottom: 1.75rem;
}

/* ============================================================
   Highlights
   ============================================================ */
.section--highlights {
  background-color: var(--color-surface);
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.highlights-grid {
  display: flex;
  gap: 0;
  flex-wrap: wrap;
}

.highlight-item {
  flex: 1;
  min-width: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 1rem 1.5rem;
  border-right: 1px solid var(--color-border);
}

.highlight-item:last-child {
  border-right: none;
}

.highlight-number {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.highlight-label {
  font-size: 0.825rem;
  color: var(--color-text-muted);
  margin-top: 0.35rem;
  line-height: 1.4;
  max-width: 140px;
}

@media (max-width: 480px) {
  .highlight-item {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    padding: 1rem;
  }
  .highlight-item:last-child {
    border-bottom: none;
  }
}

/* ============================================================
   Summary
   ============================================================ */
.summary-text {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--color-text);
  max-width: 680px;
}

/* ============================================================
   Profile Links (Connect section)
   ============================================================ */
.profile-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.profile-link-card {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.25rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-surface);
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
  min-height: 44px;
  transition: border-color 150ms ease, color 150ms ease, box-shadow 150ms ease;
  text-decoration: none;
}

.profile-link-card:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(14, 124, 107, 0.08);
  text-decoration: none;
}

.profile-link-card svg {
  flex-shrink: 0;
  opacity: 0.7;
}

.profile-link-card:hover svg {
  opacity: 1;
}

/* ============================================================
   Projects Grid
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.project-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.project-card--coming-soon {
  border-style: dashed;
  opacity: 0.65;
  box-shadow: none;
}

.project-card--coming-soon:hover {
  transform: none;
  box-shadow: none;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.card-description {
  font-size: 0.925rem;
  line-height: 1.65;
  color: var(--color-text-muted);
  flex: 1;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.01em;
}

.card-why {
  background-color: var(--color-bg);
  border-radius: calc(var(--radius) - 2px);
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.card-why-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.card-why p {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin: 0;
}

.card-explore-list {
  margin: 0;
  padding-left: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.card-explore-list li {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-text-muted);
}

.card-actions {
  margin-top: 0.25rem;
  display: flex;
  gap: 0.625rem;
  flex-wrap: wrap;
}

/* ============================================================
   Testimonials
   ============================================================ */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.testimonial-card {
  margin: 0;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.testimonial-quote {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--color-text);
  font-style: italic;
  flex: 1;
}

.testimonial-quote::before {
  content: '\201C';
  font-size: 1.5rem;
  line-height: 0;
  vertical-align: -0.4rem;
  color: var(--color-accent);
  margin-right: 0.15rem;
}

.testimonial-attribution {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.testimonial-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
}

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

.testimonial-link {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-accent);
  margin-top: 0.35rem;
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background-color: var(--color-hero-bg);
  padding: 2rem 1.25rem;
  text-align: center;
}

.footer-text {
  font-size: 0.875rem;
  color: #64748B;
}

/* ============================================================
   Media Queries
   ============================================================ */
@media (max-width: 480px) {
  .hero-name {
    font-size: 2rem;
  }

  .hero-tagline {
    font-size: 1rem;
  }
}