/* ============ LEARN PAGE - 30-Day Roadmap ============ */
.subject-filters { display: flex; flex-wrap: wrap; gap: 0.7rem; justify-content: center; margin-top: 2rem; }
.subject-tab {
  display: inline-flex; align-items: center; gap: 0.55rem;
  padding: 0.6rem 1.05rem; border-radius: 999px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  font-family: 'Poppins', sans-serif; font-size: 0.82rem; font-weight: 500;
  transition: all 0.25s ease; user-select: none;
}
.subject-tab i { font-size: 1rem; color: var(--muted); }
.subject-tab:hover { border-color: var(--primary); box-shadow: 0 0 18px var(--primary-soft); }
.subject-tab.active { background: var(--primary); color: #04100c; border-color: var(--primary); box-shadow: 0 0 22px var(--primary-glow); }
.subject-tab.active i { color: #04100c; }

/* ---------- progress panel ---------- */
.progress-panel {
  max-width: 1000px; margin: 2.5rem auto 0; padding: 1.4rem 1.6rem;
  border: 1px solid var(--border); border-radius: 18px; background: var(--glass);
  box-shadow: var(--card-shadow);
}
.progress-row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.progress-stats { display: flex; gap: 2rem; flex-wrap: wrap; }
.progress-stat b { display: block; font-family: 'Orbitron', sans-serif; font-size: 1.4rem; color: var(--primary); }
.progress-stat span { font-size: 0.74rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }
.progress-track { height: 10px; border-radius: 999px; background: var(--surface-2); overflow: hidden; margin: 1rem 0 0.3rem; }
.progress-fill { height: 100%; width: 0%; border-radius: 999px; background: linear-gradient(90deg, var(--primary-2), var(--primary)); box-shadow: 0 0 14px var(--primary-glow); transition: width 0.6s ease; }
.progress-label { font-size: 0.78rem; color: var(--muted); }

/* ---------- roadmap grid ---------- */
.roadmap { max-width: 1000px; margin: 2rem auto 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.1rem; }
.day-card {
  position: relative; border: 1px solid var(--border); border-radius: 16px;
  background: var(--surface); padding: 1.2rem 1.2rem 1rem; cursor: pointer; overflow: hidden;
  transition: all 0.25s ease;
}
.day-card:hover { border-color: var(--primary); box-shadow: 0 8px 30px var(--primary-soft); }
.day-card.locked { cursor: not-allowed; opacity: 0.6; filter: grayscale(0.5); }
.day-card.locked:hover { border-color: var(--border); box-shadow: none; }
.day-card.done { border-color: var(--primary-2); background: linear-gradient(135deg, rgba(0,230,118,0.10), var(--surface)); }
.day-card .day-no { font-family: 'Orbitron', sans-serif; font-size: 0.72rem; color: var(--primary); letter-spacing: 0.12em; display: flex; align-items: center; justify-content: space-between; }
.day-card .day-no .lock-ico { color: var(--muted); }
.day-card h4 { margin: 0.5rem 0 0.3rem; font-family: 'Orbitron', sans-serif; font-weight: 600; font-size: 1rem; }
.day-card p { color: var(--muted); font-size: 0.85rem; line-height: 1.6; margin: 0; }
.day-card .day-status { position: absolute; top: 0; right: 0; border-top-left-radius: 12px; padding: 0.25rem 0.8rem; font-size: 0.7rem; font-weight: 600; }
.day-card.done .day-status { background: var(--primary); color: #04100c; }
.day-card.current .day-status { background: var(--primary-soft); color: var(--primary); border: 1px solid var(--border); }

/* ---------- day modal ---------- */
.learn-overlay { position: fixed; inset: 0; background: rgba(2,6,4,0.8); backdrop-filter: blur(6px); display: grid; place-items: center; z-index: 1000; padding: 1rem; }
.learn-modal { width: min(860px, 100%); max-height: 88vh; overflow: auto; border-radius: 20px; border: 1px solid var(--primary); background: var(--glass-strong); box-shadow: 0 20px 70px rgba(0,0,0,0.7), 0 0 40px var(--primary-soft); padding: 1.8rem; position: relative; }
.learn-modal::-webkit-scrollbar { width: 8px; }
.learn-modal::-webkit-scrollbar-thumb { background: var(--primary-2); border-radius: 8px; }
.learn-modal h3 { font-family: 'Orbitron', sans-serif; color: var(--primary); margin: 0 0 0.2rem; }
.learn-modal .day-sub { color: var(--muted); font-size: 0.85rem; margin-bottom: 1.2rem; }
.learn-modal h5 { margin: 1.1rem 0 0.4rem; font-family: 'Orbitron', sans-serif; font-size: 0.95rem; letter-spacing: 0.05em; color: var(--text); }
.learn-modal ul { margin: 0 0 0.2rem; padding-left: 1.2rem; }
.learn-modal li { color: var(--muted); font-size: 0.95rem; line-height: 1.75; margin-bottom: 0.3rem; }
.learn-modal .read-box { background: var(--surface); border-left: 3px solid var(--primary); border-radius: 0 12px 12px 0; padding: 0.9rem 1.1rem; margin: 0 0 0.2rem; color: var(--text); font-size: 0.95rem; line-height: 1.8; white-space: pre-line; }
.learn-modal .check-list { list-style: none; padding: 0; margin: 0 0 0.2rem; }
.learn-modal .check-list li { display: flex; gap: 0.6rem; align-items: flex-start; color: var(--text); }
.learn-modal .check-list i { color: var(--primary); margin-top: 0.25rem; }
.learn-modal .code-box { background: #051209; border: 1px solid var(--border); border-radius: 12px; padding: 1rem 1.2rem; overflow-x: auto; margin: 0.4rem 0; }
.learn-modal .code-box pre { font-family: 'Consolas', 'Monaco', monospace; font-size: 0.85rem; color: #d7ffe9; white-space: pre; line-height: 1.6; }
.learn-modal .task-box { background: var(--primary-soft); border: 1px dashed var(--primary); border-radius: 12px; padding: 1rem 1.2rem; margin: 0.4rem 0 1rem; }
.learn-modal .task-box b { color: var(--primary); }
.learn-modal .modal-actions { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-top: 1.2rem; }
.learn-modal .btn-reset { background: transparent; color: var(--muted); border: 1px solid var(--border); }

/* ---------- AI mentor ---------- */
.ai-panel { max-width: 1000px; margin: 2.5rem auto 0; padding: 1.4rem 1.6rem; border: 1px solid var(--primary); border-radius: 18px; background: var(--glass); box-shadow: var(--card-shadow); }
.ai-head { display: flex; align-items: center; gap: 0.8rem; margin-bottom: 0.9rem; }
.ai-head .ai-ico { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; background: var(--primary); color: #04100c; font-size: 1.2rem; box-shadow: 0 0 20px var(--primary-glow); }
.ai-head h3 { font-family: 'Orbitron', sans-serif; color: var(--text); margin: 0; font-size: 1.1rem; }
.ai-head span { color: var(--muted); font-size: 0.78rem; }
.ai-input-row { display: flex; gap: 0.7rem; flex-wrap: wrap; }
.ai-input-row input { flex: 1; min-width: 220px; background: var(--surface); border: 1px solid var(--border); color: var(--text); border-radius: 12px; padding: 0.8rem 1rem; font-family: 'Poppins', sans-serif; }
.ai-input-row input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.ai-output { margin-top: 1rem; padding: 1rem 1.2rem; border-radius: 12px; background: var(--surface); border: 1px solid var(--border); min-height: 60px; color: var(--text); font-size: 0.93rem; line-height: 1.75; white-space: pre-line; display: none; }
.ai-output.busy::before { content: 'Mentor is thinking...'; color: var(--primary); }
.ask-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.9rem; }
.ask-chip { font-size: 0.76rem; padding: 0.35rem 0.8rem; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); background: var(--surface); cursor: pointer; transition: all 0.2s ease; }
.ask-chip:hover { color: var(--primary); border-color: var(--primary); box-shadow: 0 0 12px var(--primary-soft); }

/* ---------- completion toast ---------- */
.learn-toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(140%); background: var(--primary); color: #04100c; font-weight: 600; padding: 0.8rem 1.5rem; border-radius: 999px; box-shadow: 0 10px 40px var(--primary-glow); z-index: 1200; transition: transform 0.4s ease; font-family: 'Poppins', sans-serif; }
.learn-toast.show { transform: translateX(-50%) translateY(0); }

@media (max-width: 620px) {
  .progress-row { flex-direction: column; align-items: flex-start; }
  .roadmap { grid-template-columns: 1fr; }
  .learn-modal { padding: 1.2rem; }
}