/* ========================================
   ShowPoint — Main Stylesheet
   Design: Clean, fast, professional
   ======================================== */

:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #eff6ff;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-border: #e2e8f0;
  --color-accent: #0ea5e9;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --container-max: 1200px;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.08), 0 4px 6px rgba(0, 0, 0, 0.04);
}

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

html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--color-primary-dark); }

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

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ========================================
   Header
   ======================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(8px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
}
.nav__logo:hover { color: var(--color-primary); }

.nav__links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
}

.nav__link {
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: background 0.15s, color 0.15s;
}
.nav__link:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  flex-direction: column;
  gap: 4px;
}
.nav__toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.2s;
}

/* ========================================
   Hero
   ======================================== */
.hero {
  padding: 5rem 0 4rem;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-bg) 100%);
  text-align: center;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.hero__highlight {
  color: var(--color-primary);
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.hero__categories {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  max-width: 720px;
  margin: 0 auto;
}

.hero__tag {
  display: inline-block;
  padding: 0.375rem 1rem;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 500;
  background: var(--color-bg);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  transition: all 0.15s;
}
.hero__tag:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ========================================
   Section Title
   ======================================== */
.section__title {
  font-size: 1.75rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 2.5rem;
}

/* ========================================
   Category Cards
   ======================================== */
.categories {
  padding: 5rem 0;
}

.categories__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.category-card {
  display: block;
  padding: 2rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: box-shadow 0.2s, border-color 0.2s;
  color: var(--color-text);
}
.category-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
  color: var(--color-text);
}

.category-card__icon {
  width: 48px;
  height: 48px;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.category-card__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.category-card__desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ========================================
   Mission
   ======================================== */
.mission {
  padding: 5rem 0;
  background: var(--color-bg-alt);
}

.mission__text {
  max-width: 720px;
  margin: 0 auto 3rem;
  text-align: center;
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.mission__values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.mission__value {
  text-align: center;
  padding: 1.5rem;
}

.mission__value strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

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

/* ========================================
   Footer
   ======================================== */
.footer {
  padding: 3rem 0 2rem;
  background: var(--color-text);
  color: #cbd5e1;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer__logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
}

.footer__tagline {
  font-size: 0.875rem;
  margin-top: 0.5rem;
  color: #94a3b8;
}

.footer__col h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.75rem;
}

.footer__col ul {
  list-style: none;
}

.footer__col li {
  margin-bottom: 0.375rem;
}

.footer__col a {
  color: #94a3b8;
  font-size: 0.8125rem;
}
.footer__col a:hover {
  color: #fff;
}

.footer__bottom {
  border-top: 1px solid #334155;
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.8125rem;
  color: #64748b;
}

.footer__disclaimer {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: #475569;
}

/* ========================================
   Responsive
   ======================================== */

/* ========================================
   Article Cards (public listing)
   ======================================== */
.articles-listing { padding: 4rem 0; }

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.article-card {
  display: block;
  padding: 1.5rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: box-shadow 0.2s, border-color 0.2s;
  color: var(--color-text);
}
.article-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
  color: var(--color-text);
}

.article-card__category {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.article-card__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.article-card__excerpt {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.article-card__meta {
  display: flex;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

@media (max-width: 768px) {
  .nav__links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
  }

  .nav__links.active {
    display: flex;
  }

  .nav__toggle {
    display: flex;
  }

  .hero {
    padding: 3rem 0;
  }

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

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 480px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
}