/* ═══════════════════════════════════════════════════════════════
   EXTRACURRICULAR.CSS  –  Extra Curricular Activities Section
   Jeeva Sivan Portfolio | Dark Futuristic Developer Theme
   ═══════════════════════════════════════════════════════════════ */

.extra-content {
  padding-block: var(--sp-20);
}

.extra-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--sp-6);
  max-width: var(--max-width);
  margin-inline: auto;
  margin-top: var(--sp-10);
}

/* Card base */
.extra-card {
  flex: 1 1 calc(33.333% - var(--sp-6));
  min-width: 280px;
  max-width: 380px;
  background: var(--clr-bg-glass);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-base), transform var(--transition-bounce), box-shadow var(--transition-base);
}

/* Subtle top gradient accent line on card */
.extra-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  opacity: 0.7;
  transition: opacity var(--transition-base), height var(--transition-fast);
}

.extra-card:hover {
  transform: translateY(-4px);
}

.extra-card:hover::before {
  opacity: 1;
  height: 3px;
}

/* Card Top: Icon and Year */
.extra-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-2);
}

.extra-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.extra-card:hover .extra-icon-box {
  transform: scale(1.08);
}

.extra-year {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: var(--fw-semibold);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
}

/* Card Title & Organization */
.extra-title {
  font-size: var(--fs-md);
  font-weight: var(--fw-bold);
  color: var(--clr-text-primary);
  line-height: var(--lh-snug);
}

.extra-org {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  font-family: var(--font-mono);
  line-height: var(--lh-normal);
}

.extra-event {
  font-size: 0.75rem;
  color: var(--clr-text-muted);
  font-style: italic;
}

/* Card Description */
.extra-desc {
  font-size: var(--fs-xs);
  color: var(--clr-text-secondary);
  line-height: var(--lh-relaxed);
  margin-top: auto;
  padding-top: var(--sp-2);
}

/* ── Color Accent Themes ── */

/* 1. Purple (SRM) */
.extra-accent-purple::before {
  background: linear-gradient(90deg, #8b5cf6, #a78bfa);
}
.extra-accent-purple .extra-icon-box {
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.25);
  color: #a78bfa;
}
.extra-accent-purple .extra-year {
  color: #a78bfa;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.25);
}
.extra-accent-purple .extra-org {
  color: #c4b5fd;
}
.extra-accent-purple:hover {
  border-color: rgba(139, 92, 246, 0.4);
  box-shadow: 0 10px 30px -10px rgba(139, 92, 246, 0.3);
}

/* 2. Green (KPR Hackathon) */
.extra-accent-green::before {
  background: linear-gradient(90deg, #10b981, #34d399);
}
.extra-accent-green .extra-icon-box {
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: #34d399;
}
.extra-accent-green .extra-year {
  color: #34d399;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
}
.extra-accent-green .extra-org {
  color: #6ee7b7;
}
.extra-accent-green:hover {
  border-color: rgba(16, 185, 129, 0.4);
  box-shadow: 0 10px 30px -10px rgba(16, 185, 129, 0.3);
}

/* 3. Orange (Sri Sai Ranganathan) */
.extra-accent-orange::before {
  background: linear-gradient(90deg, #f97316, #fb923c);
}
.extra-accent-orange .extra-icon-box {
  background: rgba(249, 115, 22, 0.12);
  border: 1px solid rgba(249, 115, 22, 0.25);
  color: #fb923c;
}
.extra-accent-orange .extra-year {
  color: #fb923c;
  background: rgba(249, 115, 22, 0.1);
  border: 1px solid rgba(249, 115, 22, 0.25);
}
.extra-accent-orange .extra-org {
  color: #fdba74;
}
.extra-accent-orange:hover {
  border-color: rgba(249, 115, 22, 0.4);
  box-shadow: 0 10px 30px -10px rgba(249, 115, 22, 0.3);
}

/* 4. Blue (LIRO) */
.extra-accent-blue::before {
  background: linear-gradient(90deg, #3b82f6, #60a5fa);
}
.extra-accent-blue .extra-icon-box {
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.25);
  color: #60a5fa;
}
.extra-accent-blue .extra-year {
  color: #60a5fa;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
}
.extra-accent-blue .extra-org {
  color: #93c5fd;
}
.extra-accent-blue:hover {
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: 0 10px 30px -10px rgba(59, 130, 246, 0.3);
}

/* 5. Pink (Chess) */
.extra-accent-pink::before {
  background: linear-gradient(90deg, #ec4899, #f472b6);
}
.extra-accent-pink .extra-icon-box {
  background: rgba(236, 72, 153, 0.12);
  border: 1px solid rgba(236, 72, 153, 0.25);
  color: #f472b6;
}
.extra-accent-pink .extra-year {
  color: #f472b6;
  background: rgba(236, 72, 153, 0.1);
  border: 1px solid rgba(236, 72, 153, 0.25);
}
.extra-accent-pink .extra-org {
  color: #fbcfe8;
}
.extra-accent-pink:hover {
  border-color: rgba(236, 72, 153, 0.4);
  box-shadow: 0 10px 30px -10px rgba(236, 72, 153, 0.3);
}

/* Bottom Statement */
.extra-footer-statement {
  margin-top: var(--sp-12);
  text-align: center;
  max-width: 720px;
  margin-inline: auto;
}

.extra-footer-box {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-8);
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid rgba(6, 182, 212, 0.2);
  border-radius: var(--radius-full);
  backdrop-filter: blur(8px);
}

.extra-footer-icon {
  font-size: 1.2rem;
  color: #f59e0b;
  flex-shrink: 0;
}

.extra-footer-text {
  font-size: var(--fs-xs);
  color: var(--clr-text-secondary);
  font-weight: var(--fw-medium);
  line-height: var(--lh-relaxed);
  letter-spacing: 0.01em;
}

/* ── Responsive Layout Breakpoints ── */

/* Tablet: 2 per row */
@media (max-width: 900px) {
  .extra-card {
    flex: 1 1 calc(50% - var(--sp-6));
    max-width: calc(50% - var(--sp-6));
  }
}

/* Mobile: 1 per row */
@media (max-width: 600px) {
  .extra-card {
    flex: 1 1 100%;
    max-width: 100%;
  }
  .extra-footer-box {
    flex-direction: column;
    text-align: center;
    border-radius: var(--radius-xl);
    padding: var(--sp-4) var(--sp-5);
  }
}

/* ── Certificate Link Button ── */
.extra-cert-btn {
  margin-top: var(--sp-3);
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  text-decoration: none;
  width: fit-content;
  transition: all var(--transition-bounce);
  backdrop-filter: blur(8px);
}

.extra-accent-purple .extra-cert-btn {
  color: #a78bfa;
  background: rgba(139, 92, 246, 0.08);
  border: 1px solid rgba(139, 92, 246, 0.25);
}
.extra-accent-purple .extra-cert-btn:hover {
  color: #ffffff;
  background: rgba(139, 92, 246, 0.25);
  border-color: rgba(139, 92, 246, 0.6);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(139, 92, 246, 0.3);
}

.extra-accent-green .extra-cert-btn {
  color: #34d399;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
}
.extra-accent-green .extra-cert-btn:hover {
  color: #ffffff;
  background: rgba(16, 185, 129, 0.25);
  border-color: rgba(16, 185, 129, 0.6);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.extra-accent-orange .extra-cert-btn {
  color: #fb923c;
  background: rgba(249, 115, 22, 0.08);
  border: 1px solid rgba(249, 115, 22, 0.25);
}
.extra-accent-orange .extra-cert-btn:hover {
  color: #ffffff;
  background: rgba(249, 115, 22, 0.25);
  border-color: rgba(249, 115, 22, 0.6);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.3);
}

.extra-accent-blue .extra-cert-btn {
  color: #60a5fa;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.25);
}
.extra-accent-blue .extra-cert-btn:hover {
  color: #ffffff;
  background: rgba(59, 130, 246, 0.25);
  border-color: rgba(59, 130, 246, 0.6);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3);
}

.extra-cert-btn svg {
  transition: transform var(--transition-fast);
}

.extra-cert-btn:hover svg {
  transform: translate(2px, -2px);
}