/* ============================================================
   stage4.css  |  Achievements · Coding Profiles · Currently Building
   ============================================================ */

/* ════════════════════════════════════════════════
   ACHIEVEMENTS
════════════════════════════════════════════════ */
.achievements-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  box-shadow: var(--shadow-card);
  position: relative; overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.stat-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--stat-color, var(--accent-primary));
  border-radius: var(--radius-full) var(--radius-full) 0 0;
}
.stat-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--border-accent); }

.stat-icon      { font-size: 32px; margin-bottom: var(--space-sm); display: block; }
.stat-number    { font-size: clamp(32px, 5vw, 48px); font-weight: 700; font-family: var(--font-mono); color: var(--stat-color, var(--accent-primary)); line-height: 1; margin-bottom: 6px; display: block; }
.stat-label     { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; display: block; }
.stat-sublabel  { font-size: 12px; color: var(--text-muted); display: block; font-family: var(--font-mono); }

.achievements-lower {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.achievements-block-title {
  font-size: 18px; font-weight: 700; color: var(--text-primary);
  margin-bottom: var(--space-lg);
  display: flex; align-items: center; gap: 10px;
}
.achievements-block-title span { font-size: 20px; }

.cert-list { display: flex; flex-direction: column; gap: var(--space-sm); }
.cert-item {
  display: flex; align-items: center; gap: var(--space-md);
  background: var(--bg-secondary); border: 1px solid var(--border-light);
  border-radius: var(--radius-md); padding: 12px var(--space-md);
  transition: all var(--transition); cursor: default;
}
.cert-item:hover { border-color: var(--border-accent); background: var(--accent-light); transform: translateX(4px); }
.cert-logo  { width: 36px; height: 36px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
.cert-info  { flex: 1; min-width: 0; }
.cert-name  { font-size: 13px; font-weight: 600; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cert-issuer { font-size: 12px; color: var(--text-muted); font-family: var(--font-mono); }
.cert-badge { font-size: 11px; font-weight: 600; padding: 2px 9px; border-radius: var(--radius-full); background: #f0fdf4; color: #166534; border: 1px solid rgba(22,101,52,0.2); white-space: nowrap; flex-shrink: 0; }

.simulation-list { display: flex; flex-direction: column; gap: var(--space-sm); }
.simulation-item {
  background: var(--bg-secondary); border: 1px solid var(--border-light);
  border-radius: var(--radius-md); padding: var(--space-md);
  transition: all var(--transition); cursor: default;
}
.simulation-item:hover { border-color: var(--border-accent); transform: translateX(4px); }
.simulation-header { display: flex; align-items: center; justify-content: space-between; gap: var(--space-sm); margin-bottom: 5px; flex-wrap: wrap; }
.simulation-name   { font-size: 13px; font-weight: 600; color: var(--text-primary); }
.simulation-org    { font-size: 12px; color: var(--text-muted); font-family: var(--font-mono); }
.simulation-tags   { display: flex; gap: 5px; flex-wrap: wrap; margin-top: 6px; }

@media (max-width: 1024px) { .achievements-stats { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px)  { .achievements-lower { grid-template-columns: 1fr; } }
@media (max-width: 480px)  { .achievements-stats { grid-template-columns: repeat(2, 1fr); gap: var(--space-md); } .stat-card { padding: var(--space-lg) var(--space-md); } }

/* ════════════════════════════════════════════════
   CODING PROFILES
════════════════════════════════════════════════ */
.coding-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.coding-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-card);
  display: flex; flex-direction: column; gap: var(--space-md);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  text-decoration: none; color: inherit;
  position: relative; overflow: hidden;
}
.coding-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--coding-color, var(--accent-primary));
}
.coding-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--border-accent); color: inherit; }

.coding-card-header { display: flex; align-items: center; justify-content: space-between; }
.coding-platform-info { display: flex; align-items: center; gap: 12px; }
.coding-platform-icon {
  width: 44px; height: 44px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center; font-size: 22px;
  background: var(--bg-secondary); border: 1px solid var(--border-light); flex-shrink: 0;
}
.coding-platform-name   { font-size: 18px; font-weight: 700; color: var(--text-primary); }
.coding-platform-handle { font-size: 12px; color: var(--text-muted); font-family: var(--font-mono); }
.coding-visit-arrow { font-size: 18px; color: var(--text-subtle); transition: transform var(--transition), color var(--transition); }
.coding-card:hover .coding-visit-arrow { transform: translate(3px, -3px); color: var(--accent-primary); }

.coding-main-stat {
  text-align: center; padding: var(--space-md) 0;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.coding-main-number { font-size: clamp(36px, 5vw, 52px); font-weight: 700; font-family: var(--font-mono); color: var(--coding-color, var(--accent-primary)); line-height: 1; display: block; }
.coding-main-label  { font-size: 13px; color: var(--text-muted); margin-top: 5px; display: block; font-weight: 500; }

.coding-sub-stats { display: flex; justify-content: space-around; gap: var(--space-sm); }
.coding-sub-stat  { text-align: center; flex: 1; }
.coding-sub-value { font-size: 18px; font-weight: 700; color: var(--text-primary); font-family: var(--font-mono); display: block; }
.coding-sub-label { font-size: 11px; color: var(--text-muted); display: block; margin-top: 2px; }

.coding-tags { display: flex; flex-wrap: wrap; gap: 6px; }

@media (max-width: 900px) { .coding-grid { grid-template-columns: 1fr; max-width: 480px; margin-left: auto; margin-right: auto; } }
@media (max-width: 640px) { .coding-grid { max-width: 100%; } }

/* ════════════════════════════════════════════════
   CURRENTLY BUILDING
════════════════════════════════════════════════ */
.building-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-2xl);
  align-items: start;
}

.building-intro h3 { margin-bottom: var(--space-md); font-size: 22px; }
.building-intro p  { color: var(--text-muted); font-size: 15px; line-height: 1.8; margin-bottom: var(--space-lg); }

.building-learning-tags { display: flex; flex-wrap: wrap; gap: var(--space-sm); }
.learning-tag {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 500; color: var(--text-secondary);
  background: var(--bg-card); border: 1px solid var(--border-light);
  border-radius: var(--radius-full); padding: 6px 14px; transition: all var(--transition);
}
.learning-tag:hover { border-color: var(--border-accent); color: var(--accent-primary); background: var(--accent-light); }

.building-list { display: flex; flex-direction: column; gap: var(--space-md); }
.building-item {
  background: var(--bg-card); border: 1px solid var(--border-light);
  border-radius: var(--radius-lg); padding: var(--space-lg);
  display: flex; gap: var(--space-md); align-items: flex-start;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.building-item:hover { transform: translateX(5px); box-shadow: var(--shadow-md); border-color: var(--border-accent); }

.building-item-strip { width: 4px; border-radius: var(--radius-full); flex-shrink: 0; align-self: stretch; background: var(--item-color, var(--accent-primary)); }
.building-item-icon  { font-size: 28px; flex-shrink: 0; line-height: 1; padding-top: 2px; }
.building-item-body  { flex: 1; min-width: 0; }
.building-item-header { display: flex; align-items: center; justify-content: space-between; gap: var(--space-sm); margin-bottom: 5px; flex-wrap: wrap; }
.building-item-title  { font-size: 16px; font-weight: 700; color: var(--text-primary); }

.building-status-pill { font-size: 11px; font-weight: 600; padding: 3px 10px; border-radius: var(--radius-full); white-space: nowrap; flex-shrink: 0; }
.pill-active  { background: var(--accent-light); color: var(--accent-primary); border: 1px solid var(--border-accent); }
.pill-wip     { background: #fffbeb; color: #92400e; border: 1px solid rgba(146,64,14,0.2); }
.pill-queue   { background: #f9fafb; color: #374151; border: 1px solid var(--border-light); }

.building-item-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 10px; }
.building-item-tech { display: flex; flex-wrap: wrap; gap: 5px; }

.building-progress-wrap  { margin-top: 10px; }
.building-progress-label { display: flex; justify-content: space-between; font-size: 11px; color: var(--text-muted); font-family: var(--font-mono); margin-bottom: 5px; }
.building-progress-track { height: 4px; background: var(--bg-tertiary); border-radius: var(--radius-full); overflow: hidden; }
.building-progress-fill  { height: 100%; border-radius: var(--radius-full); background: var(--item-color, var(--accent-primary)); width: 0%; transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1); }

@media (max-width: 900px) {
  .building-layout { grid-template-columns: 1fr; }
  .building-intro  { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); align-items: start; }
  .building-intro h3, .building-intro p { grid-column: 1 / -1; }
}
@media (max-width: 500px) { .building-intro { grid-template-columns: 1fr; } }