/* ============================================
   PROJECTS PAGE STYLES - OKUTE JOSEPH PORTFOLIO
   ============================================ */

/* === 1. RESET & BOX-SIZING === */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* === 2. CSS CUSTOM PROPERTIES === */
:root {
  --clr-primary: #0a2942;
  --clr-primary-light: #1a3a5c;
  --clr-accent: #2c7a6e;
  --clr-accent-light: #3e9487;
  --clr-text: #1f2a3e;
  --clr-text-light: #4a5568;
  --clr-white: #ffffff;
  --clr-border: #e2e8f0;
  --clr-bg-light: #f8fafc;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 15px 30px rgba(0, 0, 0, 0.12);
  --radius: 20px;
  --max-width: 1200px;
  --transition: all 0.3s ease;
}

/* === 3. BASE STYLES === */
body {
  font-family: 'Segoe UI', system-ui, -apple-system, 'Inter', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--clr-text);
  background: var(--clr-white);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

/* === 4. SKIP LINK === */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--clr-primary);
  color: white;
  padding: 0.75rem 1.5rem;
  z-index: 9999;
  text-decoration: none;
  border-radius: 0 0 8px 8px;
  font-weight: 500;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid var(--clr-accent);
}

/* === 5. HEADER & NAVIGATION === */
header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  height: 70px;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--clr-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
  transition: var(--transition);
}

.logo:hover {
  color: var(--clr-accent);
}

nav ul {
  list-style: none;
  display: flex;
  gap: 0.5rem;
}

nav a {
  display: inline-block;
  padding: 0.5rem 1.2rem;
  text-decoration: none;
  color: var(--clr-text-light);
  font-weight: 500;
  border-radius: 40px;
  transition: var(--transition);
}

nav a:hover {
  background-color: rgba(44, 122, 110, 0.1);
  color: var(--clr-accent);
}

nav a.active {
  background-color: var(--clr-accent);
  color: white;
}

/* === 6. PROJECTS SECTION === */
.projects-section {
  padding: 4rem 0;
  background: linear-gradient(135deg, #f8fafe 0%, #f0f4f9 100%);
  min-height: 70vh;
}

.section-title {
  font-size: 2.2rem;
  color: var(--clr-primary);
  text-align: center;
  margin-bottom: 1rem;
  position: relative;
  padding-bottom: 1rem;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: var(--clr-accent);
  border-radius: 3px;
}

.projects-intro {
  text-align: center;
  color: var(--clr-text-light);
  font-size: 1.1rem;
  margin-bottom: 3rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* === 7. CARDS GRID === */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* === 8. CARD STYLES === */
.card {
  background: var(--clr-white);
  border-radius: var(--radius);
  padding: 2rem;
  border: 1px solid var(--clr-border);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  transition: var(--transition);
  height: 100%;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-primary));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.card:hover::before {
  transform: scaleX(1);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--clr-accent-light);
}

/* Featured Card */
.card.featured {
  background: linear-gradient(135deg, var(--clr-white) 0%, rgba(44, 122, 110, 0.05) 100%);
  border: 2px solid var(--clr-accent);
  position: relative;
}

.card.featured::after {
  content: '⭐ Featured';
  position: absolute;
  top: 1rem;
  right: -2rem;
  background: var(--clr-accent);
  color: white;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.3rem 2rem;
  transform: rotate(45deg);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  z-index: 1;
}

.card.featured .card-tag {
  background: var(--clr-accent);
  color: white;
}

/* Card Tag */
.card-tag {
  display: inline-block;
  background: rgba(44, 122, 110, 0.1);
  color: var(--clr-accent);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 1rem;
  border-radius: 30px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  align-self: flex-start;
  border: 1px solid rgba(44, 122, 110, 0.2);
  transition: var(--transition);
}

.card:hover .card-tag {
  background: var(--clr-accent);
  color: white;
}

/* Card Title */
.card h3 {
  font-size: 1.3rem;
  color: var(--clr-primary);
  margin: 0.2rem 0;
  font-weight: 600;
  line-height: 1.3;
}

/* Card Description */
.card p {
  font-size: 0.95rem;
  color: var(--clr-text-light);
  flex: 1;
  line-height: 1.6;
}

/* Tech Stack */
.card-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0.5rem 0;
}

.card-tech span {
  background: var(--clr-bg-light);
  color: var(--clr-primary);
  font-size: 0.75rem;
  padding: 0.3rem 1rem;
  border-radius: 30px;
  border: 1px solid var(--clr-border);
  font-weight: 500;
  transition: var(--transition);
}

.card-tech span:hover {
  background: var(--clr-accent);
  color: white;
  border-color: var(--clr-accent);
  transform: translateY(-2px);
}

/* Card Link */
.card-link {
  margin-top: auto;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--clr-accent);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: gap 0.2s ease;
  padding: 0.6rem 0;
  border-top: 1px solid var(--clr-border);
  text-decoration: none;
}

.card-link:hover {
  gap: 0.8rem;
  color: var(--clr-primary);
}

/* === 9. FOOTER === */
footer {
  background: var(--clr-primary);
  color: rgba(255, 255, 255, 0.75);
  text-align: center;
  padding: 2rem 0;
  font-size: 0.9rem;
  margin-top: auto;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.cvn-footer {
  color: var(--clr-accent-light);
  font-weight: 500;
  font-size: 0.85rem;
}

/* === 10. ANIMATIONS === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card {
  animation: fadeInUp 0.5s ease forwards;
  opacity: 0;
}

.card:nth-child(1) { animation-delay: 0.05s; }
.card:nth-child(2) { animation-delay: 0.1s; }
.card:nth-child(3) { animation-delay: 0.15s; }
.card:nth-child(4) { animation-delay: 0.2s; }
.card:nth-child(5) { animation-delay: 0.25s; }
.card:nth-child(6) { animation-delay: 0.3s; }

/* === 11. RESPONSIVE DESIGN === */
@media (max-width: 768px) {
  .container {
    padding: 0 1.5rem;
  }

  header .container {
    flex-direction: column;
    height: auto;
    padding: 1rem 0;
  }

  nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .projects-intro {
    font-size: 1rem;
    padding: 0 1rem;
  }

  .cards {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 0;
  }

  .card {
    padding: 1.5rem;
  }

  .card h3 {
    font-size: 1.2rem;
  }

  .card.featured::after {
    font-size: 0.6rem;
    padding: 0.2rem 1.8rem;
    top: 0.8rem;
    right: -1.8rem;
  }
}

@media (max-width: 480px) {
  .projects-section {
    padding: 2rem 0;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .projects-intro {
    font-size: 0.9rem;
    margin-bottom: 2rem;
  }

  .card {
    padding: 1.2rem;
  }

  .card-tag {
    font-size: 0.65rem;
    padding: 0.2rem 0.8rem;
  }

  .card h3 {
    font-size: 1.1rem;
  }

  .card p {
    font-size: 0.85rem;
  }

  .card-tech span {
    font-size: 0.65rem;
    padding: 0.2rem 0.8rem;
  }

  .card-link {
    font-size: 0.85rem;
  }

  .card.featured::after {
    font-size: 0.55rem;
    padding: 0.2rem 1.5rem;
    top: 0.6rem;
    right: -1.5rem;
  }

  footer {
    padding: 1.2rem 0;
    font-size: 0.8rem;
  }
}

/* === 12. UTILITY CLASSES === */
.text-center {
  text-align: center;
}

.mt-1 {
  margin-top: 0.5rem;
}

.mt-2 {
  margin-top: 1rem;
}

.mb-1 {
  margin-bottom: 0.5rem;
}

.mb-2 {
  margin-bottom: 1rem;
}

/* === 13. SCROLLBAR STYLING (Optional) === */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--clr-bg-light);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: var(--clr-accent);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--clr-primary);
}