/* ===== RESET & BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
 --primary: #111827;
 --primary-light: #1f2937;
 --accent: #22c55e;
 --accent-hover: #16a34a;
  --text: #2d3748;
  --text-light: #718096;
  --bg: #ffffff;
  --bg-alt: #f7fafc;
  --border: #e2e8f0;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --radius: 12px;
  --max-width: 1200px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: 16px;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--primary);
}

.logo img {
  height: 44px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav a {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  transition: all 0.2s;
}

.nav a:hover,
.nav a.active {
  background: var(--primary);
  color: #fff;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--primary);
}

/* ===== HERO ===== */
  .hero {
  position: relative;
  padding: 140px 0 120px;
  color: #fff;
  text-align: center;
  background-image: url('../images/hero-cnc.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  overflow: hidden;
}

/* Dark overlay so text stays readable */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(26, 54, 93, 0.85) 0%,
    rgba(44, 82, 130, 0.75) 100%
  );
  z-index: 0;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.hero p {
  font-size: clamp(1rem, 2vw, 1.25rem);
  opacity: 0.9;
  max-width: 640px;
  margin: 0 auto 32px;
}

.hero-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border-color: #fff;
}

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

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

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-header h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.section-header p {
  color: var(--text-light);
  font-size: 1.05rem;
}

/* ===== CARDS ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 0.3s;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: transparent;
}

.card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--primary);
}

.card p {
  color: var(--text-light);
  font-size: 0.95rem;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

/* ===== PROFILE CARDS ===== */
.profile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}

.profile-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  transition: all 0.3s;
}

.profile-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.profile-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0 auto 16px;
}

.profile-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.profile-card .role {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 8px;
}

.profile-card .meta {
  font-size: 0.8rem;
  color: var(--text-light);
}

/* ===== TIMELINE ===== */
.timeline {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  padding-left: 64px;
  margin-bottom: 40px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 16px;
  top: 6px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
  box-shadow: 0 0 0 2px var(--accent);
}

.timeline-item h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 4px;
}

.timeline-item .date {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 8px;
}

.timeline-item p {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* ===== EVENT LIST ===== */
.event-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.event-item {
  display: flex;
  gap: 20px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all 0.2s;
}

.event-item:hover {
  box-shadow: var(--shadow);
  border-color: var(--primary);
}

.event-date {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.event-date .day {
  font-size: 1.25rem;
  line-height: 1;
}

.event-date .month {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.8;
}

.event-content h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--primary);
}

.event-content p {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* ===== GALLERY ===== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.gallery-item {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--bg-alt);
  border: 1px solid var(--border);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

/* ===== DOWNLOADS ===== */
.download-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.download-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.2s;
}

.download-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

.download-item span {
  font-weight: 500;
  font-size: 0.95rem;
}

.download-item a {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 16px;
}

.contact-info p {
  color: var(--text-light);
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.contact-info a {
  color: var(--primary);
  font-weight: 500;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s;
  background: var(--bg);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.8);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer h4 {
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.footer p {
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer a {
  color: rgba(255, 255, 255, 0.8);
  display: block;
  padding: 4px 0;
  font-size: 0.9rem;
}

.footer a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
  }

  .nav.open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .hero {
    padding: 72px 0 56px;
  }

  .section {
    padding: 56px 0;
  }

  .profile-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }

  .event-item {
    flex-direction: column;
    gap: 12px;
  }

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

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

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

/* ===== UTILITIES ===== */
.text-center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.mt-4 { margin-top: 32px; }
.hidden { display: none; }

/* ===== ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== PROFILE PHOTOS ===== */
.profile-photo {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover; 
  object-position: center; /* Keeps faces centered */
  margin: 0 auto 16px;
  display: block;
  border: 3px solid var(--border);
  transition: transform 0.3s ease, border-color 0.3s ease;
  background-color: var(--bg-alt); /* Shows while loading */
}

.profile-card:hover .profile-photo {
  transform: scale(1.08);
  border-color: var(--accent);
}

/* ===== MENTOR PHOTO ===== */
.mentor-photo {
  width: 140px; /* Larger than the 100px team photos */
  height: 140px;
  border-radius: 50%;
  object-fit: cover; 
  object-position: center; 
  margin: 0 auto 20px;
  display: block;
  border: 4px solid var(--primary); /* Stronger border color */
  box-shadow: var(--shadow);
  transition: transform 0.3s ease;
}

.profile-card:hover .mentor-photo {
  transform: scale(1.05);
}

/* ===== DOWNLOADS TABS ===== */
.tabs-container {
  max-width: 900px;
  margin: 0 auto;
}

.tabs-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 16px;
}

.tab-btn {
  background: transparent;
  border: none;
  padding: 12px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-light);
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.2s ease;
  font-family: inherit;
}

.tab-btn:hover {
  background: var(--bg-alt);
  color: var(--primary);
}

.tab-btn.active {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow);
}

.tab-pane {
  display: none;
  animation: fadeInTab 0.3s ease;
}

.tab-pane.active {
  display: block;
}

@keyframes fadeInTab {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Mobile responsive */
@media (max-width: 768px) {
  .tabs-nav {
    flex-direction: column;
  }
  .tab-btn {
    width: 100%;
    text-align: left;
  }
}