/* ============================================================
   Learning Pages – SIE RACHID TRAORE Portfolio
   ============================================================ */

/* ─── LEARNING HERO ─────────────────────────────────────────── */
.learning-hero {
  min-height: 55vh; display: flex; align-items: center;
  padding: calc(var(--nav-h) + 60px) 0 80px;
  position: relative; overflow: hidden;
  --hero-color: #1e56ff;
}
.learning-hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at top right, rgba(var(--hero-color-rgb, 30,86,255), 0.15) 0%, transparent 60%);
}
.learning-hero-content {
  max-width: var(--container-w); margin: 0 auto;
  padding: 0 clamp(24px, 6vw, 80px);
  position: relative; z-index: 2;
}
.back-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.85rem; color: var(--text-secondary);
  margin-bottom: 32px; transition: color var(--transition-base);
}
.back-link:hover { color: var(--blue-glow); }
.back-link i { transition: transform var(--transition-spring); }
.back-link:hover i { transform: translateX(-4px); }

.learning-hero-icon {
  width: 72px; height: 72px; border-radius: var(--radius-lg);
  overflow: hidden; border: 1px solid var(--border-glass);
  margin-bottom: 20px; background: rgba(0,0,0,0.3);
}
.learning-hero-icon img { width: 100%; height: 100%; object-fit: cover; }
.learning-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800; line-height: 1.1;
  margin-bottom: 16px;
}
.learning-hero > .learning-hero-content > p {
  font-size: 1rem; color: var(--text-secondary); max-width: 600px;
  line-height: 1.7; margin-bottom: 24px;
}
.learning-hero-meta {
  display: flex; flex-wrap: wrap; gap: 20px;
}
.learning-hero-meta span {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.85rem; color: var(--text-muted);
  font-family: var(--font-mono);
}
.learning-hero-meta i { color: var(--blue-glow); }

/* ─── LAYOUT ─────────────────────────────────────────────────── */
.learning-content-section { padding: 60px 0 100px; }
.learning-layout {
  display: grid; grid-template-columns: 260px 1fr;
  gap: 40px; align-items: start;
}

/* ─── SIDEBAR ────────────────────────────────────────────────── */
.learning-sidebar {
  position: sticky; top: calc(var(--nav-h) + 20px);
  max-height: calc(100vh - var(--nav-h) - 40px);
  overflow-y: auto;
}
.learning-sidebar::-webkit-scrollbar { width: 3px; }
.learning-sidebar::-webkit-scrollbar-thumb { background: var(--border-glass); }

.sidebar-nav {
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg); padding: 20px;
  backdrop-filter: blur(16px);
}
.sidebar-nav h3 {
  font-size: 0.72rem; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.12em;
  margin-bottom: 12px; padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}
.sidebar-nav ul { display: flex; flex-direction: column; gap: 2px; margin-bottom: 24px; }
.sidebar-link {
  display: block; padding: 9px 12px; border-radius: var(--radius-sm);
  font-size: 0.84rem; color: var(--text-secondary);
  transition: all var(--transition-base); line-height: 1.4;
}
.sidebar-link:hover { color: var(--text-primary); background: rgba(59,130,246,0.08); }
.sidebar-link.active { color: var(--blue-glow); background: rgba(59,130,246,0.12); }

.sidebar-tools { display: flex; flex-direction: column; gap: 6px; }
.tool-link {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: var(--radius-sm);
  font-size: 0.84rem; color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-base);
}
.tool-link:hover { color: var(--blue-glow); border-color: rgba(59,130,246,0.3); background: rgba(59,130,246,0.06); }
.tool-link i { width: 16px; color: var(--blue-bright); }

/* ─── MODULE ─────────────────────────────────────────────────── */
.learning-module {
  margin-bottom: 60px; padding-bottom: 60px;
  border-bottom: 1px solid var(--border-subtle);
}
.learning-module:last-child { border-bottom: none; margin-bottom: 0; }

.module-header { margin-bottom: 20px; }
.module-num {
  display: inline-block;
  font-family: var(--font-mono); font-size: 0.7rem; font-weight: 500;
  color: var(--blue-glow); text-transform: uppercase; letter-spacing: 0.1em;
  padding: 4px 10px; border-radius: var(--radius-full);
  background: rgba(59,130,246,0.1); border: 1px solid rgba(59,130,246,0.2);
  margin-bottom: 10px;
}
.module-header h2 {
  font-family: var(--font-display); font-size: clamp(1.4rem, 2.5vw, 1.8rem);
  font-weight: 700; line-height: 1.2;
}
.learning-module > p {
  color: var(--text-secondary); line-height: 1.75;
  font-size: 0.97rem; margin-bottom: 24px; max-width: 700px;
}

/* ─── CODE BLOCKS ────────────────────────────────────────────── */
.code-block {
  border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border-glass);
  margin: 24px 0;
}
.code-header {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 18px;
  background: rgba(15, 25, 55, 0.9);
  border-bottom: 1px solid var(--border-subtle);
}
.code-lang {
  padding: 3px 10px; border-radius: var(--radius-full);
  font-family: var(--font-mono); font-size: 0.7rem; font-weight: 600;
  background: rgba(59,130,246,0.2); color: var(--blue-glow);
  border: 1px solid rgba(59,130,246,0.3);
}
.code-header span:nth-child(2) { flex: 1; font-size: 0.82rem; color: var(--text-muted); }
.code-copy {
  padding: 5px 10px; border-radius: var(--radius-sm);
  color: var(--text-muted); font-size: 0.8rem;
  transition: all var(--transition-base);
  border: 1px solid var(--border-subtle);
}
.code-copy:hover { color: var(--text-primary); border-color: rgba(59,130,246,0.4); }

.code-block pre {
  margin: 0; padding: 22px 20px;
  background: rgba(8, 14, 35, 0.95);
  overflow-x: auto; font-size: 0.88rem; line-height: 1.7;
}
.code-block code {
  font-family: var(--font-mono); color: var(--text-primary);
}
.code-block .c { color: #64748b; font-style: italic; }   /* comments */
.code-block .s { color: #86efac; }                        /* strings */
.code-block .n { color: #93c5fd; }                        /* numbers */
.code-block .k { color: #f9a8d4; }                        /* keywords */

/* ─── INFO BOX ───────────────────────────────────────────────── */
.info-box {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 16px 20px; border-radius: var(--radius-md);
  background: rgba(59,130,246,0.07); border: 1px solid rgba(59,130,246,0.2);
  margin: 20px 0;
}
.info-box i { color: var(--blue-bright); font-size: 1rem; margin-top: 2px; flex-shrink: 0; }
.info-box p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6; }
.info-box p strong { color: var(--text-primary); }

/* ─── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .learning-layout { grid-template-columns: 1fr; }
  .learning-sidebar { position: static; max-height: none; }
  .sidebar-nav ul { flex-direction: row; flex-wrap: wrap; gap: 4px; }
  .sidebar-link { padding: 7px 12px; }
  .sidebar-tools { flex-direction: row; flex-wrap: wrap; }
}
@media (max-width: 640px) {
  .learning-hero { min-height: auto; padding-top: calc(var(--nav-h) + 40px); }
  .code-block pre { font-size: 0.78rem; padding: 16px; }
}