/* ===================================
   LAB PAGE — lab.css
   Extends style.css (loaded after it)
=================================== */

/* Active nav link */
.nav-active {
  color: var(--primary-light) !important;
  background: rgba(108, 99, 255, 0.15) !important;
}

/* ===================================
   LAB HERO
=================================== */
.lab-hero {
  position: relative;
  padding: 140px 0 80px;
  overflow: hidden;
}
.lab-hero-bg {
  position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(ellipse 700px 500px at 70% 30%, rgba(108,99,255,0.14) 0%, transparent 70%),
    radial-gradient(ellipse 500px 300px at 10% 70%, rgba(0,212,170,0.09) 0%, transparent 70%),
    var(--dark);
}
.back-link {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--text-muted); font-size: 14px; font-weight: 500;
  margin-bottom: 36px;
  transition: color var(--transition);
}
.back-link:hover { color: var(--primary-light); }

.lab-hero-content { max-width: 700px; }
.lab-hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(108, 99, 255, 0.12);
  border: 1px solid var(--border);
  color: var(--primary-light);
  padding: 7px 20px; border-radius: 50px;
  font-size: 13px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 1px;
  margin-bottom: 20px;
}
.lab-hero-content h1 {
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 800; line-height: 1.15; margin-bottom: 18px;
}
.lab-hero-content > p {
  font-size: 17px; color: var(--text-muted);
  line-height: 1.8; margin-bottom: 40px; max-width: 600px;
}
.lab-hero-stats {
  display: flex; gap: 40px; flex-wrap: wrap;
}
.lab-stat { text-align: left; }
.lab-stat-num {
  display: block;
  font-size: 32px; font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.lab-stat-label {
  display: block;
  font-size: 13px; color: var(--text-muted); margin-top: 2px;
}

/* ===================================
   FILTER BAR
=================================== */
.lab-filter-bar {
  background: var(--dark-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky; top: 62px; z-index: 100;
  backdrop-filter: blur(10px);
}
.filter-tabs { display: flex; gap: 10px; flex-wrap: wrap; }
.filter-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 8px 20px; border-radius: 50px;
  font-size: 13px; font-weight: 500;
  cursor: pointer; transition: all var(--transition);
  font-family: 'Inter', sans-serif;
}
.filter-btn:hover { border-color: var(--primary); color: var(--primary-light); }
.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ===================================
   LAB SECTION
=================================== */
.lab-section { padding: 70px 0; background: var(--dark); }

.lab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(480px, 1fr));
  gap: 32px;
}

/* ===================================
   LAB CARD
=================================== */
.lab-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  display: flex; flex-direction: column; gap: 24px;
  transition: all var(--transition);
  position: relative; overflow: hidden;
}
.lab-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}
.lab-card:hover {
  border-color: var(--primary);
  transform: translateY(-5px);
  box-shadow: 0 16px 50px rgba(108, 99, 255, 0.2);
}
.lab-card.hidden { display: none; }

.lab-card-header {
  display: flex; align-items: center; justify-content: space-between;
}
.lab-card-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, rgba(108,99,255,0.2), rgba(0,212,170,0.1));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; color: var(--primary);
}
.lab-card-meta { display: flex; align-items: center; gap: 12px; }

.lab-status {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 14px; border-radius: 50px;
  font-size: 12px; font-weight: 600;
}
.lab-status.live {
  background: rgba(0, 212, 170, 0.12);
  color: var(--accent);
  border: 1px solid rgba(0,212,170,0.3);
}
.lab-status.live i { font-size: 8px; animation: pulse 2s infinite; }

.lab-status.in-progress {
  background: rgba(255, 193, 7, 0.12);
  color: #ffc107;
  border: 1px solid rgba(255,193,7,0.3);
}
.lab-status.planned {
  background: rgba(144, 144, 176, 0.1);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.lab-number {
  color: var(--text-muted); font-size: 13px; font-weight: 600;
  font-family: monospace;
}

.lab-card-title {
  font-size: 22px; font-weight: 700; line-height: 1.3;
}

.lab-card-desc {
  color: var(--text-muted); font-size: 15px; line-height: 1.75;
}

/* Milestones */
.lab-milestones h4 {
  font-size: 13px; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.8px;
  margin-bottom: 14px;
  display: flex; align-items: center; gap: 8px;
}
.lab-milestones h4 i { color: var(--primary); }

.milestone-list {
  display: flex; flex-direction: column; gap: 10px;
}
.milestone-list li {
  display: flex; align-items: center; gap: 10px;
  font-size: 14px; color: var(--text-muted);
}
.milestone-list li i { font-size: 15px; }
.milestone-list li.done { color: var(--text); }
.milestone-list li.done i { color: var(--accent); }
.milestone-list li.pending i { color: var(--text-muted); opacity: 0.4; }

/* Tech Tags */
.lab-tech {
  display: flex; flex-wrap: wrap; gap: 10px;
}
.tech-tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: 50px;
  font-size: 13px; font-weight: 600;
  border: 1px solid transparent;
}
.tech-tag.python  { background: rgba(55, 118, 171, 0.15); color: #4da6e8; border-color: rgba(77,166,232,0.25); }
.tech-tag.docker  { background: rgba(29, 99, 237, 0.12);  color: #4faeff; border-color: rgba(79,174,255,0.25); }
.tech-tag.aws     { background: rgba(255, 153, 0, 0.12);  color: #ff9900; border-color: rgba(255,153,0,0.25); }
.tech-tag.cicd    { background: rgba(108, 99, 255, 0.12); color: var(--primary-light); border-color: var(--border); }
.tech-tag.node    { background: rgba(104, 160, 99, 0.15); color: #68a063; border-color: rgba(104,160,99,0.25); }
.tech-tag.react   { background: rgba(97, 218, 251, 0.12); color: #61dafb; border-color: rgba(97,218,251,0.25); }
.tech-tag.laravel { background: rgba(255, 45, 32, 0.12);  color: #ff6b6b; border-color: rgba(255,107,107,0.25); }
.tech-tag.mongo     { background: rgba(77, 179, 61, 0.12);  color: #4db33d; border-color: rgba(77,179,61,0.25); }
.tech-tag.mysql     { background: rgba(0, 117, 143, 0.15);  color: #00a8cc; border-color: rgba(0,168,204,0.25); }
.tech-tag.bootstrap { background: rgba(121, 82, 179, 0.15); color: #9b72cf; border-color: rgba(121,82,179,0.25); }

/* Features Grid */
.lab-features h4 {
  font-size: 13px; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.8px;
  margin-bottom: 14px;
  display: flex; align-items: center; gap: 8px;
}
.lab-features h4 i { color: var(--accent); }
.feature-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px;
}
.feature-item {
  display: flex; align-items: center; gap: 9px;
  font-size: 13px; color: var(--text-muted);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
}
.feature-item i { color: var(--primary); font-size: 13px; min-width: 14px; }

/* CI/CD Flow */
.cicd-flow h4 {
  font-size: 13px; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.8px;
  margin-bottom: 14px;
  display: flex; align-items: center; gap: 8px;
}
.cicd-flow h4 i { color: var(--primary); }
.flow-steps {
  display: flex; align-items: center; gap: 8px;
  flex-wrap: wrap;
}
.flow-step {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  background: rgba(108, 99, 255, 0.08);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  flex: 1; min-width: 70px;
}
.flow-step i { font-size: 18px; color: var(--primary); }
.flow-step span { font-size: 11px; font-weight: 600; color: var(--text-muted); text-align: center; }
.flow-arrow { color: var(--primary); font-size: 12px; opacity: 0.6; }

/* Card Footer */
.lab-card-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 4px;
  border-top: 1px solid var(--border);
  margin-top: auto; flex-wrap: wrap; gap: 12px;
}
.lab-link {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 22px; border-radius: 50px;
  font-size: 14px; font-weight: 600;
  transition: all var(--transition);
}
.lab-link.primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 16px rgba(108,99,255,0.35);
}
.lab-link.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(108,99,255,0.5);
}
.lab-url {
  display: flex; align-items: center; gap: 7px;
  color: var(--text-muted); font-size: 13px;
  font-family: monospace;
}
.lab-url i { color: var(--primary); font-size: 13px; }

/* Full-width combined card */
.lab-card-full {
  grid-column: 1 / -1;
}
.lab-card-icon-group {
  display: flex; align-items: flex-end; gap: -8px; position: relative;
}
.lab-card-icon-sub {
  width: 32px; height: 32px;
  background: rgba(108,99,255,0.2);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; color: var(--primary-light);
  margin-left: -10px; margin-bottom: -4px;
  border: 2px solid var(--card-bg);
}
.lab-card-body {
  display: grid; grid-template-columns: 1fr 1fr; gap: 32px;
}
.lab-col { display: flex; flex-direction: column; gap: 24px; }

@media (max-width: 720px) {
  .lab-card-body { grid-template-columns: 1fr; }
}

/* ===================================
   PLACEHOLDER CARD
=================================== */
.lab-card-placeholder {
  border-style: dashed;
  background: transparent;
  display: flex; align-items: center; justify-content: center;
  min-height: 280px;
}
.lab-card-placeholder::before { display: none; }
.lab-card-placeholder:hover {
  border-color: var(--primary);
  background: rgba(108,99,255,0.04);
  transform: none;
  box-shadow: none;
}
.placeholder-inner { text-align: center; }
.placeholder-icon {
  width: 60px; height: 60px;
  background: rgba(108,99,255,0.1);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; color: var(--primary);
  margin: 0 auto 16px;
}
.placeholder-inner h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.placeholder-inner p { color: var(--text-muted); font-size: 14px; }

/* ===================================
   LEARNING JOURNEY
=================================== */
.lab-journey { padding: 80px 0; background: var(--dark-2); }
.journey-grid {
  display: flex; flex-wrap: wrap; gap: 20px; justify-content: center;
}
.journey-item {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 32px;
  min-width: 120px;
  transition: all var(--transition);
}
.journey-item:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.journey-icon {
  font-size: 32px; color: var(--primary);
}
.journey-item span {
  font-size: 13px; font-weight: 600; color: var(--text-muted);
}

/* ===================================
   RESPONSIVE
=================================== */
@media (max-width: 900px) {
  .lab-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .lab-hero { padding: 120px 0 60px; }
  .lab-hero-stats { gap: 24px; }
  .lab-card-footer { flex-direction: column; align-items: flex-start; }
  .filter-tabs { gap: 8px; }
  .filter-btn { padding: 7px 14px; font-size: 12px; }
}