/* ═══════════════════════════════════════════════════════════════════
   DPDP Act 2023 – AIBE 2026 Educational Webpage Styles
   Scoped under #dpdp-wrap to avoid WordPress theme conflicts
   ═══════════════════════════════════════════════════════════════════ */

/* ─── Google Font Import ─── */
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800;900&family=Fira+Code:wght@500&display=swap');

/* ─── CSS Variables ─── */
#dpdp-wrap {
  --dp-blue:      #2563eb;
  --dp-blue-l:    #dbeafe;
  --dp-blue-d:    #1e3a8a;
  --dp-green:     #16a34a;
  --dp-green-l:   #dcfce7;
  --dp-saffron:   #d97706;
  --dp-saffron-l: #fef3c7;
  --dp-violet:    #7c3aed;
  --dp-violet-l:  #f5f3ff;
  --dp-red:       #dc2626;
  --dp-red-l:     #fef2f2;
  --dp-teal:      #0e7490;
  --dp-teal-l:    #f0f9ff;
  --dp-orange:    #ea580c;
  --dp-orange-l:  #fff7ed;
  --dp-bg:        #f8fafc;
  --dp-bg2:       #ffffff;
  --dp-border:    #e2e8f0;
  --dp-text:      #1e293b;
  --dp-muted:     #64748b;
  --dp-radius:    12px;
  --dp-shadow:    0 4px 24px rgba(0,0,0,0.08);
  --dp-font:      'Nunito', 'Segoe UI', sans-serif;

  font-family: var(--dp-font);
  color: var(--dp-text);
  background: var(--dp-bg);
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 12px 60px;
  box-sizing: border-box;
  line-height: 1.7;
}

#dpdp-wrap *, #dpdp-wrap *::before, #dpdp-wrap *::after {
  box-sizing: border-box;
}

/* ═══════════════════════════════ HERO ══════════════════════════════ */
#dpdp-hero {
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 40%, #7c3aed 75%, #0e7490 100%);
  color: white;
  text-align: center;
  padding: 56px 24px 44px;
  border-radius: 0 0 32px 32px;
  margin-bottom: 0;
  position: relative;
  overflow: hidden;
}

#dpdp-hero::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 260px; height: 260px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
}

#dpdp-hero::after {
  content: '';
  position: absolute;
  bottom: -40px; left: -40px;
  width: 180px; height: 180px;
  background: rgba(255,255,255,0.04);
  border-radius: 50%;
}

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.3);
  padding: 5px 18px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

#dpdp-hero h1 {
  font-size: clamp(1.7rem, 5vw, 3rem);
  font-weight: 900;
  margin: 0 0 14px;
  line-height: 1.2;
  text-shadow: 0 2px 8px rgba(0,0,0,0.18);
}

.hero-sub {
  font-size: 1rem;
  opacity: 0.88;
  margin-bottom: 20px;
  font-weight: 600;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 24px;
}

.hero-meta span {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 700;
}

.hero-btns { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }

.hbtn {
  background: white;
  color: var(--dp-blue-d);
  border: none;
  padding: 11px 28px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 800;
  cursor: pointer;
  font-family: var(--dp-font);
  transition: transform 0.18s, box-shadow 0.18s;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.hbtn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }

.hbtn-alt {
  background: rgba(255,255,255,0.18);
  color: white;
  border: 2px solid rgba(255,255,255,0.4);
}

.hbtn-alt:hover { background: rgba(255,255,255,0.28); }

/* ═══════════════════════════════ NAV ═══════════════════════════════ */
#dpdp-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--dp-blue-d);
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 8px 12px;
  box-shadow: 0 3px 16px rgba(0,0,0,0.2);
}

.nbtn {
  background: rgba(255,255,255,0.1);
  color: white;
  border: 1px solid rgba(255,255,255,0.15);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.77rem;
  font-weight: 700;
  cursor: pointer;
  font-family: var(--dp-font);
  transition: background 0.18s, transform 0.15s;
  white-space: nowrap;
}

.nbtn:hover { background: rgba(255,255,255,0.22); transform: translateY(-1px); }

/* ═══════════════════════════ SECTIONS ═══════════════════════════════ */
.dpdp-section {
  background: var(--dp-bg2);
  border: 1px solid var(--dp-border);
  border-radius: var(--dp-radius);
  padding: 32px 28px;
  margin-top: 28px;
  box-shadow: var(--dp-shadow);
}

.sec-title {
  font-size: 1.45rem;
  font-weight: 900;
  color: var(--dp-blue-d);
  margin: 0 0 24px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--dp-blue);
}

/* ═══════════════════════════════ TOC ════════════════════════════════ */
.toc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.toc-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(135deg, var(--dp-teal-l), #e0f2fe);
  border: 1px solid #bae6fd;
  border-radius: 10px;
  padding: 12px 14px;
  cursor: pointer;
  transition: transform 0.18s, box-shadow 0.18s;
  font-weight: 700;
  font-size: 0.88rem;
}

.toc-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(14,116,144,0.18);
  background: linear-gradient(135deg, #bae6fd, #cffafe);
}

.toc-num {
  background: var(--dp-teal);
  color: white;
  min-width: 34px;
  height: 34px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 900;
}

/* ═══════════════════════════ INTRO GRID ══════════════════════════ */
.intro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.intro-card {
  border-radius: var(--dp-radius);
  padding: 20px 18px;
  font-size: 0.93rem;
}

.intro-card h3 { font-size: 1rem; font-weight: 800; margin: 0 0 8px; }
.intro-card p { margin: 0; }

.ic-blue   { background: var(--dp-blue-l);    border-left: 4px solid var(--dp-blue);    }
.ic-green  { background: var(--dp-green-l);   border-left: 4px solid var(--dp-green);   }
.ic-saffron{ background: var(--dp-saffron-l); border-left: 4px solid var(--dp-saffron); }
.ic-violet { background: var(--dp-violet-l);  border-left: 4px solid var(--dp-violet);  }

.chapter-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  background: linear-gradient(90deg, #f0f9ff, #faf5ff);
  border: 1px solid var(--dp-border);
  border-radius: 10px;
  padding: 14px 16px;
  margin-top: 8px;
}

.cs-item {
  background: var(--dp-blue-d);
  color: white;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 800;
  text-align: center;
  line-height: 1.3;
}

.cs-arrow { color: var(--dp-muted); font-size: 1.1rem; font-weight: 900; }

/* ═══════════════════════════ TABS ═══════════════════════════════ */
.tab-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--dp-border);
  padding-bottom: 10px;
}

.tab-btn {
  background: #f1f5f9;
  border: 1px solid var(--dp-border);
  border-radius: 8px 8px 0 0;
  padding: 8px 16px;
  font-size: 0.83rem;
  font-weight: 700;
  cursor: pointer;
  font-family: var(--dp-font);
  color: var(--dp-muted);
  transition: all 0.18s;
}

.tab-btn.active {
  background: var(--dp-blue);
  color: white;
  border-color: var(--dp-blue);
}

.tab-btn:hover:not(.active) {
  background: var(--dp-blue-l);
  color: var(--dp-blue-d);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn 0.25s ease; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

.tp-head {
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--dp-blue-d);
  margin: 0 0 18px;
  padding: 10px 14px;
  background: linear-gradient(90deg, var(--dp-blue-l), #f0f9ff);
  border-left: 4px solid var(--dp-blue);
  border-radius: 6px;
}

/* ═══════════════════════════ ACCORDION ══════════════════════════ */
.acc-item { border: 1px solid var(--dp-border); border-radius: 10px; margin-bottom: 10px; overflow: hidden; }

.acc-btn {
  width: 100%;
  background: #f8fafc;
  border: none;
  text-align: left;
  padding: 14px 18px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  font-family: var(--dp-font);
  color: var(--dp-blue-d);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.18s;
}

.acc-btn:hover { background: var(--dp-blue-l); }
.acc-btn.open  { background: var(--dp-blue); color: white; }

.acc-arrow { font-size: 0.8rem; transition: transform 0.25s; }
.acc-btn.open .acc-arrow { transform: rotate(180deg); }

.acc-body {
  display: none;
  padding: 18px;
  background: white;
  border-top: 1px solid var(--dp-border);
  animation: fadeIn 0.2s ease;
}

.acc-body ul { padding-left: 20px; margin: 8px 0; }
.acc-body ul li { margin-bottom: 5px; }
.acc-body p { margin: 6px 0; }

/* ═══════════════════════════ EXAMPLE & TRAP BOXES ══════════════ */
.example-box {
  background: linear-gradient(135deg, #f0fdf4, #dcfce7);
  border: 1px solid #86efac;
  border-left: 4px solid var(--dp-green);
  border-radius: 8px;
  padding: 14px 16px;
  margin: 12px 0;
  font-size: 0.9rem;
}

.ex-label {
  display: block;
  font-weight: 800;
  color: var(--dp-green);
  margin-bottom: 6px;
  font-size: 0.85rem;
}

.trap-box {
  background: linear-gradient(135deg, #fff7ed, #fef3c7);
  border: 1px solid #fcd34d;
  border-left: 4px solid var(--dp-saffron);
  border-radius: 8px;
  padding: 14px 16px;
  margin: 12px 0;
  font-size: 0.9rem;
}

.trap-label {
  display: block;
  font-weight: 800;
  color: var(--dp-saffron);
  margin-bottom: 6px;
  font-size: 0.85rem;
}

/* ═══════════════════════════ TABLES ══════════════════════════════ */
.table-wrap { overflow-x: auto; }

.dpdp-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.87rem;
  margin: 8px 0;
}

.dpdp-table th {
  background: var(--dp-blue-d);
  color: white;
  padding: 11px 14px;
  text-align: left;
  font-weight: 800;
  font-size: 0.83rem;
}

.dpdp-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--dp-border);
  vertical-align: top;
}

.dpdp-table tr:nth-child(even) td { background: #f8fafc; }
.dpdp-table tr:hover td { background: var(--dp-blue-l); }

.dpdp-table-alt th { background: var(--dp-teal); }

/* Penalty table */
.penalty-table .pen-high td  { background: #fef2f2; border-left: 4px solid var(--dp-red); }
.penalty-table .pen-high2 td { background: #fff7ed; border-left: 4px solid #f97316; }
.penalty-table .pen-med td   { background: #fefce8; border-left: 4px solid #eab308; }
.penalty-table .pen-low td   { background: #f0fdf4; border-left: 4px solid var(--dp-green); }
.penalty-table .pen-var td   { background: #eff6ff; border-left: 4px solid var(--dp-blue); }
.penalty-table .pen-other td { background: var(--dp-violet-l); border-left: 4px solid var(--dp-violet); }

.penalty-note {
  background: #fef2f2;
  border: 1px solid #fca5a5;
  border-radius: 8px;
  padding: 14px 16px;
  margin-top: 14px;
  font-size: 0.88rem;
}

.sub-head {
  font-size: 1rem;
  font-weight: 800;
  padding: 8px 12px;
  border-radius: 6px;
  margin: 0 0 10px;
}
.sub-head.green { color: var(--dp-green); background: var(--dp-green-l); }
.sub-head.red   { color: var(--dp-red);   background: var(--dp-red-l);   }

.rights-duties-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

@media (max-width: 650px) { .rights-duties-grid { grid-template-columns: 1fr; } }

/* ═══════════════════════════ FLOWCHART & MIND MAP ══════════════ */
.flowchart-wrap {
  background: white;
  border: 1px solid var(--dp-border);
  border-radius: var(--dp-radius);
  padding: 16px;
  overflow-x: auto;
}

.flowchart-wrap svg {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

/* ═══════════════════════════ ROADMAP ═══════════════════════════ */
.roadmap-wrap { display: flex; flex-direction: column; gap: 0; }

.rm-step {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  background: white;
  border: 1px solid var(--dp-border);
  border-radius: 12px;
  padding: 18px 20px;
  position: relative;
}

.rm-num {
  min-width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 900;
  color: white;
  flex-shrink: 0;
}

.rm-step-1 .rm-num { background: var(--dp-blue); }
.rm-step-2 .rm-num { background: var(--dp-teal); }
.rm-step-3 .rm-num { background: var(--dp-violet); }
.rm-step-4 .rm-num { background: var(--dp-green); }
.rm-step-5 .rm-num { background: var(--dp-red); }
.rm-step-6 .rm-num { background: var(--dp-orange); }
.rm-step-7 .rm-num { background: var(--dp-saffron); }
.rm-step-8 .rm-num { background: #0f766e; }

.rm-content h4 { margin: 0 0 5px; font-size: 1rem; font-weight: 800; color: var(--dp-blue-d); }
.rm-content p  { margin: 0 0 8px; font-size: 0.9rem; }
.rm-tag {
  display: inline-block;
  background: var(--dp-blue-l);
  color: var(--dp-blue-d);
  padding: 2px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
}

.rm-arrow {
  text-align: center;
  font-size: 1.6rem;
  color: var(--dp-blue);
  line-height: 1.2;
  margin: 0;
  padding: 0;
}

/* ══════════════════════════ MCQ SECTIONS ═══════════════════════ */
.mcq-intro {
  font-size: 0.9rem;
  color: var(--dp-muted);
  margin-bottom: 16px;
  font-style: italic;
}

.mcq-list { display: flex; flex-direction: column; gap: 16px; }

.mcq-card {
  background: white;
  border: 1px solid var(--dp-border);
  border-radius: 10px;
  padding: 18px 20px;
  position: relative;
  transition: box-shadow 0.2s;
}

.mcq-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.08); }

.mcq-arg { border-left: 4px solid var(--dp-violet); }
.mcq-stmt { border-left: 4px solid var(--dp-teal); }

.mcq-q {
  font-size: 0.93rem;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--dp-text);
  line-height: 1.5;
}

.mcq-num { color: var(--dp-blue); font-weight: 900; }

.mcq-opts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.mcq-opts label {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.87rem;
  cursor: pointer;
  padding: 7px 10px;
  border-radius: 6px;
  border: 1px solid #e5e7eb;
  transition: background 0.15s;
}

.mcq-opts label:hover { background: var(--dp-blue-l); }
.mcq-opts input[type=radio] { margin-top: 2px; flex-shrink: 0; }

.diff-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 2px 10px;
  border-radius: 20px;
  margin-top: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.easy     { background: #dcfce7; color: #166534; }
.moderate { background: #fef9c3; color: #854d0e; }
.hard     { background: #fee2e2; color: #991b1b; }

@media (max-width: 550px) { .mcq-opts { grid-template-columns: 1fr; } }

/* ══════════════════════ SHORT & DESCRIPTIVE Q ══════════════════ */
.short-q-list { display: flex; flex-direction: column; gap: 10px; }

.sq-item {
  display: flex;
  gap: 12px;
  background: var(--dp-teal-l);
  border: 1px solid #bae6fd;
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 0.9rem;
  font-weight: 600;
}

.sq-num {
  min-width: 28px;
  height: 28px;
  background: var(--dp-teal);
  color: white;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 800;
  flex-shrink: 0;
}

.desc-q-list { display: flex; flex-direction: column; gap: 14px; }

.dq-item {
  display: flex;
  gap: 14px;
  background: var(--dp-violet-l);
  border: 1px solid #ddd6fe;
  border-radius: 10px;
  padding: 18px 18px;
}

.dq-num {
  min-width: 44px;
  height: 44px;
  background: var(--dp-violet);
  color: white;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 900;
  flex-shrink: 0;
}

.dq-content h4 { margin: 0 0 6px; font-size: 0.95rem; font-weight: 800; color: var(--dp-violet); }
.dq-content p  { margin: 0; font-size: 0.88rem; }

/* ════════════════════════ ANSWER KEY ═══════════════════════════ */
.ak-toggle-bar { text-align: center; margin-bottom: 20px; }

.ak-btn {
  background: linear-gradient(135deg, var(--dp-blue-d), var(--dp-blue));
  color: white;
  border: none;
  padding: 13px 36px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  font-family: var(--dp-font);
  box-shadow: 0 4px 16px rgba(37,99,235,0.3);
  transition: transform 0.18s, box-shadow 0.18s;
}

.ak-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,99,235,0.4); }

.ak-sub {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--dp-blue-d);
  padding: 10px 14px;
  background: var(--dp-blue-l);
  border-radius: 8px;
  margin: 20px 0 14px;
}

.ak-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 10px;
}

.ak-card {
  background: white;
  border: 1px solid var(--dp-border);
  border-radius: 8px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.83rem;
}

.ak-q { font-weight: 800; color: var(--dp-muted); font-size: 0.78rem; }
.ak-ans {
  font-size: 1.2rem;
  font-weight: 900;
  color: var(--dp-green);
  border-bottom: 1px solid var(--dp-border);
  padding-bottom: 4px;
}
.ak-exp { color: var(--dp-text); font-size: 0.8rem; font-weight: 600; }

/* ════════════════════ QUICK REVISION CARDS ═════════════════════ */
.qr-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.qr-card {
  border-radius: 12px;
  padding: 18px 16px;
  border: 1px solid transparent;
}

.qr-card h4 {
  font-size: 0.95rem;
  font-weight: 900;
  margin: 0 0 10px;
}

.qr-card ul { padding-left: 18px; margin: 0; }
.qr-card ul li { font-size: 0.84rem; margin-bottom: 4px; }

.qrc-blue   { background: var(--dp-blue-l);    border-color: #93c5fd;  }
.qrc-green  { background: var(--dp-green-l);   border-color: #86efac;  }
.qrc-saffron{ background: var(--dp-saffron-l); border-color: #fcd34d;  }
.qrc-violet { background: var(--dp-violet-l);  border-color: #c4b5fd;  }
.qrc-red    { background: var(--dp-red-l);     border-color: #fca5a5;  }
.qrc-teal   { background: #f0fdf4;             border-color: #6ee7b7;  }
.qrc-indigo { background: #eef2ff;             border-color: #a5b4fc;  }
.qrc-orange { background: var(--dp-orange-l);  border-color: #fdba74;  }
.qrc-pink   { background: #fdf2f8;             border-color: #f9a8d4;  }
.qrc-gray   { background: #f9fafb;             border-color: #d1d5db;  }
.qrc-lime   { background: #f7fee7;             border-color: #bef264;  }
.qrc-dark   { background: #1e293b; color: #f1f5f9; border-color: #334155; }
.qrc-dark h4 { color: #60a5fa; }
.qrc-dark li { color: #e2e8f0; }

/* ════════════════════════ DISCLAIMER ══════════════════════════ */
.dpdp-disclaimer {
  background: #1e293b;
  color: #94a3b8;
  border-radius: 12px;
  padding: 22px 24px;
  font-size: 0.83rem;
  line-height: 1.6;
  margin-top: 28px;
}

.dpdp-disclaimer strong { color: #fbbf24; }
.disc-copy { color: #64748b; font-size: 0.75rem; margin: 10px 0 0; text-align: center; }

/* ═══════════════════════ BACK TO TOP ════════════════════════ */
#dpdp-top-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--dp-blue-d);
  color: white;
  border: none;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
  display: none;
  z-index: 999;
  transition: background 0.18s, transform 0.18s;
}

#dpdp-top-btn:hover { background: var(--dp-blue); transform: scale(1.1); }

/* ═══════════════════════════ PRINT STYLES ══════════════════════ */
@media print {
  #dpdp-nav, #dpdp-top-btn, .hero-btns, .ak-toggle-bar { display: none !important; }
  .tab-panel { display: block !important; }
  .acc-body  { display: block !important; }
  #dpdp-ak-content { display: block !important; }
  #dpdp-wrap { max-width: 100%; padding: 0; }
  .dpdp-section { break-inside: avoid; box-shadow: none; border-color: #ccc; }
  #dpdp-hero { border-radius: 0; }
  .mcq-opts { grid-template-columns: 1fr 1fr; }
}

/* ═══════════════════════ RESPONSIVE ═══════════════════════════ */
@media (max-width: 780px) {
  .dpdp-section { padding: 20px 16px; }
  .tab-btn { padding: 7px 10px; font-size: 0.76rem; }
  .qr-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
  .chapter-strip { gap: 6px; }
  .intro-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  #dpdp-hero h1 { font-size: 1.5rem; }
  .hero-meta span { font-size: 0.75rem; }
  .mcq-opts { grid-template-columns: 1fr; }
  .ak-grid { grid-template-columns: 1fr; }
  .toc-grid { grid-template-columns: 1fr; }
}