/* ===== Variables & Reset ===== */
:root {
    --background: #020202;
    --foreground: #eeeeee;
    --muted-foreground: #8f8f8f;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: Geist, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  text-decoration: none;
}

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

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

@media (min-width: 768px) {
  h1 { font-size: 3.5rem; }
  h2 { font-size: 2.5rem; }
  h3 { font-size: 1.75rem; }
}

/* ===== Layout ===== */
.container {
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 768px) {
  .container {
    padding: 0 2rem;
  }
}

/* ===== Buttons ===== */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--foreground);
  border-radius: 0.5rem;
  border: 2px solid var(--foreground);
  cursor: pointer;
  transition: all 0.2s ease;
}

.button:hover, 
.button:active {
    background-color: #181818;
}

/* ===== Navigation ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--background);
  backdrop-filter: blur(10px);
  color: var(--foreground);
}

.nav-container {
  display: flex;
  flex-direction: row-reverse;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.nav-links {
  display: none;
  list-style: none;
  gap: 2rem;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted-foreground);
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--foreground);
}

/* Mobile menu */
.mobile-menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

@media (min-width: 768px) {
  .mobile-menu-toggle {
    display: none;
  }
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--foreground);
  transition: all 0.3s ease;
}

.mobile-menu-checkbox {
  display: none;
}

.mobile-menu {
  display: none;
  position: absolute;
  top: 4rem;
  left: 0;
  right: 0;
  background-color: var(--background);
  border-bottom: 1px solid rgb(54, 54, 54);
  padding: 1rem;
}

.mobile-menu-checkbox:checked ~ .mobile-menu {
  display: block;
}

.mobile-menu-checkbox:checked ~ .mobile-menu-toggle span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-checkbox:checked ~ .mobile-menu-toggle span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-checkbox:checked ~ .mobile-menu-toggle span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-menu a {
  display: block;
  padding: 0.5rem 0;
  font-weight: 500;
  color: var(--muted-foreground);
}

.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--foreground);
}

/* ===== Sections ===== */
.section {
  padding: 4rem 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 2rem;
}

.section-header p {
  margin-top: 1rem;
  color: var(--muted-foreground);
}

.button-container {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
}

/* ===== Hero ===== */
.hero-text {
  padding: 4rem 0;
  text-align: center;
}

.hero h1 {
  margin-bottom: 1.5rem;
  text-wrap: balance;
}

.hero p {
  font-size: 1.125rem;
  color: var(--muted-foreground);
  max-width: 600px;
  margin: 0 auto 2.5rem;
}

.hero-image {
    overflow: hidden;
    border-radius: 1rem;
}

.hero-image img {
    width: 100%;
    height: auto;
    transform: scale(1.2);
    transform-origin: center bottom;
}

@media (min-width: 1024px) {
    .hero {
        padding: 6rem 0;
    }
    
    .hero-container {
        display: grid;
        grid-template-columns: 1fr 2fr;
        gap: 4rem;
        align-items: center;
    }

    .hero-image {
        border-radius: 0;
    }

    .hero-image img {
        transform: scale(1);
        border-radius: 1rem;
    }
}

/* ===== Header ===== */
.page-header {
  text-align: center;
  padding: 4rem 0;
}

@media (min-width: 1024px) {
  .page-header {
    padding: 6rem 0;
  }
}

/* ===== Main Section ===== */
.main-container {
  max-width: 1200px;
}

.about-grid {
  display: flex;
  flex-direction: column;
}

@media (min-width: 1024px) {
  .about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    column-gap: 4rem;
  }
}

.main-images {
  padding: 4rem 0;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

@media (min-width: 768px) {
  .main-images {
    padding: 4rem 2rem;
    gap: 4rem;
  }
}

@media (min-width: 1024px) {
  .main-images {
    padding: 0;
  }
}

.main-images img {
  width: 100%;
  border-radius: 1rem;
}

.main-text {
  color: var(--muted-foreground);
}

/* ===== Photo Preview ===== */
.preview-grid {
    display: grid;
    grid-template-rows: repeat(3, 1fr);
    margin-bottom: 4rem;
}

@media (min-width: 768px) {
    .preview-grid {
        grid-template-rows: 1fr;
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }
}

.photo-card img {
    width: 100%;
    height: auto;
    border-radius: 1rem;
}

/* ===== Member Cards ===== */
.member-cards-grid {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.member-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 80%;
  border-radius: 2rem;
  padding: 1rem;
}

.member-card-img {
  border-radius: 1rem;
  margin-bottom: 1.5rem;
}

.member-card-role {
  padding: 0.5rem 0;
  font-weight: 700;
}

.member-card-name {
  font-size: 1.5rem;
  color: white;
}

.member-card-year {
  color: var(--muted-foreground);
  margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
  .member-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }

  .member-card {
    width: 100%;
  }
}

@media (min-width: 1024px) {
  .member-cards-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
  }
}

/* ===== Photo Gallery ===== */
.photo-grid {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.row {
  max-width: 1200px;
  gap: 2rem;
  padding-top: 2rem;
}

.row.bottom {
  grid-auto-rows: 250px;
}

.row img {
  border-radius: 1rem;
  object-fit: cover;
  width: 100%;
  height: 100%;
}

.col2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
}

.col3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.col4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.span2 {
  grid-column: span 2;
}

@media (max-width: 520px) {
  .col2 {
    display: flex;
    flex-direction: column;
  }

  .col3 {
    display: flex;
    flex-direction: column;
  }

  .col4 {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
  }
}

/* ===== Utility Classes ===== */
.highlighted { color: var(--foreground); }
.text-center { text-align: center; }