/* ===================================
   Achievements Page Specific Styles - Grid Layout
   =================================== */

/* Page Header */
.page-header {
  padding: calc(70px + var(--spacing-xl)) 0 var(--spacing-lg) 0;
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  animation: slideDownFade 0.6s ease-out;
}

.page-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: textGlow 0.8s ease-out;
}

.page-subtitle {
  font-size: clamp(0.9rem, 2.5vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  padding: 0 1rem;
  animation: fadeIn 0.8s ease-out 0.2s both;
}

/* Filter Section */
.filter-section {
  padding: var(--spacing-md) 0;
  background-color: var(--bg-primary);
  position: sticky;
  top: 70px;
  z-index: 100;
  border-bottom: 1px solid var(--border-color);
}

.filter-buttons {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding: 0 1rem;
}

.filter-btn {
  padding: 0.6rem 1.5rem;
  border: 2px solid var(--border-color);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border-radius: 25px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  animation: popIn 0.4s ease-out backwards;
}

.filter-btn:nth-child(1) { animation-delay: 0s; }
.filter-btn:nth-child(2) { animation-delay: 0.05s; }
.filter-btn:nth-child(3) { animation-delay: 0.1s; }
.filter-btn:nth-child(4) { animation-delay: 0.15s; }
.filter-btn:nth-child(5) { animation-delay: 0.2s; }

.filter-btn:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-2px) scale(1.05);
}

.filter-btn.active {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary));
  color: #ffffff;
  border-color: var(--accent-primary);
  box-shadow: 0 5px 15px rgba(0, 102, 204, 0.3);
}

/* Achievements Grid */
.achievements-grid {
  padding: var(--spacing-lg) 0;
  min-height: 60vh;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  padding: 0 1rem;
  max-width: 1400px;
  margin: 0 auto;
}

/* Achievement Card */
.achievement-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  min-height: 280px;
  animation: scaleUpFade 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.achievement-card:nth-child(1) { animation-delay: 0.05s; }
.achievement-card:nth-child(2) { animation-delay: 0.1s; }
.achievement-card:nth-child(3) { animation-delay: 0.15s; }
.achievement-card:nth-child(n+4) { animation-delay: 0.2s; }

.achievement-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-tertiary));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.achievement-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-primary);
}

.achievement-card:hover::before {
  opacity: 1;
}

/* Special Card Styles */
.achievement-card.highlight {
  border-color: #ffd700;
  background: linear-gradient(135deg, var(--bg-secondary), rgba(255, 215, 0, 0.05));
}

.achievement-card.certification {
  border-color: #4a90e2;
  background: linear-gradient(135deg, var(--bg-secondary), rgba(74, 144, 226, 0.05));
}

.achievement-card.leadership {
  border-color: #ff6b6b;
  background: linear-gradient(135deg, var(--bg-secondary), rgba(255, 107, 107, 0.05));
}

.achievement-card.academic {
  border-color: #6c5ce7;
  background: linear-gradient(135deg, var(--bg-secondary), rgba(108, 92, 231, 0.05));
}

/* Card Badge */
.card-badge {
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary));
  border-radius: 50%;
  color: #ffffff;
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
  flex-shrink: 0;
  animation: bounce 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55) 0.3s;
  box-shadow: 0 4px 15px rgba(0, 102, 204, 0.2);
}

.card-badge.highlight {
  background: linear-gradient(135deg, #ffd700, #ffed4e);
  box-shadow: 0 0 15px rgba(255, 215, 0, 0.3);
}

.card-badge.certification {
  background: linear-gradient(135deg, #4a90e2, #00d4ff);
}

.card-badge.leadership {
  background: linear-gradient(135deg, #ff6b6b, #ee5a6f);
}

.card-badge.academic {
  background: linear-gradient(135deg, #6c5ce7, #a29bfe);
}

/* Card Year */
.card-year {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent-primary);
  background-color: var(--bg-tertiary);
  padding: 0.25rem 0.6rem;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  animation: slideInRight 0.5s ease-out;
}

/* Card Content */
.card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  animation: fadeInUp 0.5s ease-out 0.1s both;
}

.card-org {
  color: var(--accent-primary);
  font-weight: 600;
  font-size: 0.75rem;
  margin-bottom: 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  animation: fadeInUp 0.5s ease-out 0.15s both;
}

.card-desc {
  color: var(--text-secondary);
  font-size: 0.75rem;
  line-height: 1.5;
  margin-bottom: 0.75rem;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  animation: fadeInUp 0.5s ease-out 0.2s both;
}

/* Card Tags */
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: auto;
}

.card-tags span {
  background-color: var(--bg-tertiary);
  color: var(--text-tertiary);
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
  font-size: 0.65rem;
  font-weight: 500;
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
  animation: slideInUp 0.4s ease-out backwards;
}

.card-tags span:nth-child(1) { animation-delay: 0.25s; }
.card-tags span:nth-child(2) { animation-delay: 0.3s; }
.card-tags span:nth-child(3) { animation-delay: 0.35s; }

.card-tags span:hover {
  background-color: var(--accent-primary);
  color: #ffffff;
  border-color: var(--accent-primary);
  transform: translateY(-2px) scale(1.1);
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
  padding: var(--spacing-xl) 0;
  text-align: center;
  border-top: 1px solid var(--border-color);
  animation: fadeIn 0.8s ease-out;
}

.cta-content h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  margin-bottom: var(--spacing-sm);
  animation: slideDownFade 0.6s ease-out;
}

.cta-content p {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
  padding: 0 1rem;
}

/* Animations */
@keyframes slideDownFade {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleUpFade {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes popIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

@keyframes textGlow {
  from {
    text-shadow: 0 0 20px rgba(0, 102, 204, 0);
  }
  to {
    text-shadow: 0 0 20px rgba(0, 102, 204, 0.3);
  }
}

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

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Hidden state for filtered cards */
.achievement-card.hidden {
  display: none;
}

/* Responsive Design */
@media (max-width: 1200px) {
  .cards-grid {
    gap: 1rem;
  }
  
  .achievement-card {
    min-height: 260px;
    padding: 0.9rem;
  }
}

@media (max-width: 768px) {
  .filter-section {
    top: 60px;
    padding: 0.75rem 0;
  }

  .filter-buttons {
    gap: 0.5rem;
  }

  .filter-btn {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
  }

  /* 2x2 Grid on Mobile */
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    padding: 0 0.75rem;
  }

  .achievement-card {
    padding: 0.75rem;
    min-height: 240px;
    border-radius: 10px;
  }

  .card-badge {
    width: 35px;
    height: 35px;
    font-size: 1rem;
    margin-bottom: 0.5rem;
  }

  .card-year {
    font-size: 0.65rem;
    padding: 0.2rem 0.5rem;
    top: 0.5rem;
    right: 0.5rem;
  }

  .card-title {
    font-size: 0.85rem;
    margin-bottom: 0.3rem;
  }

  .card-org {
    font-size: 0.7rem;
    margin-bottom: 0.4rem;
  }

  .card-desc {
    font-size: 0.7rem;
    -webkit-line-clamp: 3;
    margin-bottom: 0.5rem;
  }

  .card-tags {
    gap: 0.25rem;
  }

  .card-tags span {
    font-size: 0.6rem;
    padding: 0.2rem 0.4rem;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: stretch;
    max-width: 400px;
    margin: 0 auto;
  }

  .cta-buttons .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .page-header {
    padding: calc(60px + var(--spacing-md)) 0 var(--spacing-md) 0;
  }

  .filter-section {
    padding: 0.5rem 0;
  }

  .filter-btn {
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
  }

  /* 2x2 Grid maintained on small mobile */
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
    padding: 0 0.5rem;
  }

  .achievement-card {
    padding: 0.6rem;
    min-height: 220px;
    border-radius: 8px;
  }

  .card-badge {
    width: 30px;
    height: 30px;
    font-size: 0.9rem;
  }

  .card-year {
    font-size: 0.6rem;
    padding: 0.15rem 0.4rem;
  }

  .card-title {
    font-size: 0.75rem;
    -webkit-line-clamp: 2;
  }

  .card-org {
    font-size: 0.65rem;
    -webkit-line-clamp: 1;
  }

  .card-desc {
    font-size: 0.65rem;
    -webkit-line-clamp: 2;
  }

  .card-tags span {
    font-size: 0.55rem;
    padding: 0.15rem 0.35rem;
  }
}

/* Extra small screens */
@media (max-width: 360px) {
  .cards-grid {
    gap: 0.4rem;
    padding: 0 0.4rem;
  }

  .achievement-card {
    padding: 0.5rem;
    min-height: 200px;
  }

  .card-badge {
    width: 28px;
    height: 28px;
    font-size: 0.85rem;
  }

  .card-title {
    font-size: 0.7rem;
  }

  .card-org {
    font-size: 0.6rem;
  }

  .card-desc {
    font-size: 0.6rem;
  }
}

/* Landscape mobile view */
@media (max-width: 768px) and (orientation: landscape) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .achievement-card {
    min-height: 200px;
  }
}

.card-link {
  display: inline-block;
  margin-top: 10px;
  padding: 5px 10px;
  font-size: 12px;
  color: white;
  background-color: #007bff;
  border-radius: 5px;
  text-decoration: none;
  transition: all 0.3s ease;
  animation: slideInUp 0.4s ease-out;
}

.card-link:hover {
  background-color: #0056b3;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 86, 179, 0.3);
}