/* ============================================================
   GK Practice Tool — Premium Frontend Styles v2
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Noto+Sans+Devanagari:wght@400;500;600;700&display=swap');

:root {
  --gk-blue:        #2563eb;
  --gk-blue-dk:     #1d4ed8;
  --gk-blue-light:  #eff6ff;
  --gk-blue-glow:   rgba(37,99,235,0.18);
  --gk-orange:      #f97316;
  --gk-orange-dk:   #ea6c00;
  --gk-orange-bg:   #fff7ed;
  --gk-green:       #16a34a;
  --gk-green-bg:    #f0fdf4;
  --gk-red:         #dc2626;
  --gk-red-bg:      #fef2f2;
  --gk-yellow:      #eab308;
  --gk-border:      #e2e8f0;
  --gk-bg:          #f0f4ff;
  --gk-card:        #ffffff;
  --gk-text:        #0f172a;
  --gk-subtext:     #64748b;
  --gk-radius-lg:   20px;
  --gk-radius:      14px;
  --gk-radius-sm:   10px;
  --gk-shadow:      0 4px 32px rgba(37,99,235,0.10);
  --gk-shadow-lg:   0 12px 48px rgba(37,99,235,0.16);
}

/* ── Base ──────────────────────────────────── */
.gk-wrap {
  font-family: 'Plus Jakarta Sans','Noto Sans Devanagari',sans-serif;
  max-width: 820px;
  margin: 28px auto;
  padding: 0 16px 40px;
  color: var(--gk-text);
  box-sizing: border-box;
  background: transparent;
}
.gk-wrap *, .gk-wrap *::before, .gk-wrap *::after { box-sizing: border-box; }
.gk-hidden { display: none !important; }

/* ── Screen Animation ──────────────────────── */
.gk-screen { animation: gkSlideUp 0.45s cubic-bezier(.22,.68,0,1.2) both; }
@keyframes gkSlideUp {
  from { opacity: 0; transform: translateY(22px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0)   scale(1); }
}

/* =============================================
   INTRO SCREEN — PREMIUM
   ============================================= */
.gk-intro-card {
  background: var(--gk-card);
  border-radius: var(--gk-radius-lg);
  box-shadow: var(--gk-shadow-lg);
  padding: 52px 44px 44px;
  text-align: center;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(37,99,235,0.08);
}

/* Decorative top stripe */
.gk-intro-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, #2563eb 0%, #7c3aed 50%, #f97316 100%);
}

/* Glow blob in background */
.gk-intro-glow {
  position: absolute; top: -80px; right: -80px;
  width: 300px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,0.08) 0%, transparent 70%);
  pointer-events: none;
}

/* Badge */
.gk-intro-badge-wrap {
  display: inline-flex; align-items: center; gap: 7px;
  background: linear-gradient(90deg, #eff6ff, #f5f3ff);
  border: 1px solid #c7d2fe;
  color: var(--gk-blue); border-radius: 50px;
  padding: 5px 14px; font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.3px; margin-bottom: 22px;
  text-transform: uppercase;
}
.gk-intro-live-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--gk-green);
  box-shadow: 0 0 0 3px rgba(22,163,74,0.25);
  animation: gkDotPulse 2s infinite;
}
@keyframes gkDotPulse {
  0%,100% { box-shadow: 0 0 0 3px rgba(22,163,74,0.25); }
  50%      { box-shadow: 0 0 0 6px rgba(22,163,74,0.08); }
}

/* Book icon */
.gk-intro-top-icon {
  font-size: 4rem;
  display: block;
  margin-bottom: 18px;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.12));
  animation: gkFloat 3s ease-in-out infinite;
}
@keyframes gkFloat {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}

.gk-intro-title {
  font-size: 2.1rem; font-weight: 800; margin: 0 0 16px;
  background: linear-gradient(135deg, var(--gk-blue) 0%, #7c3aed 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; letter-spacing: -0.5px;
}
.gk-intro-desc {
  font-size: 1rem; color: var(--gk-subtext); line-height: 1.9;
  max-width: 460px; margin: 0 auto 36px;
}
.gk-intro-desc strong { color: var(--gk-text); font-weight: 700; }

/* ── Stat Cards ───────────────────────────── */
.gk-intro-stats {
  display: flex; justify-content: center; gap: 14px;
  margin-bottom: 36px; flex-wrap: wrap;
}
.gk-stat-card {
  background: #fafbff;
  border: 1.5px solid #e8eeff;
  border-radius: var(--gk-radius);
  padding: 16px 20px;
  display: flex; align-items: center; gap: 14px;
  min-width: 150px; flex: 1 1 148px; max-width: 200px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  text-align: left;
}
.gk-stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(37,99,235,0.12);
  border-color: #c7d2fe;
}
.gk-stat-icon-wrap {
  width: 46px; height: 46px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; flex-shrink: 0;
}
.gk-icon-blue   { background: #eff6ff; }
.gk-icon-orange { background: #fff7ed; }
.gk-icon-green  { background: #f0fdf4; }
.gk-stat-meta { display: flex; flex-direction: column; gap: 2px; }
.gk-stat-label-top {
  font-size: 0.68rem; font-weight: 700; letter-spacing: 1.2px;
  color: var(--gk-subtext); text-transform: uppercase;
}
.gk-stat-value {
  font-size: 0.98rem; font-weight: 700; color: var(--gk-text);
}

/* ── Get Started Button ───────────────────── */
.gk-btn-primary {
  display: inline-flex; align-items: center; gap: 10px;
  background: linear-gradient(135deg, var(--gk-blue) 0%, #4f46e5 100%);
  color: #fff; border: none; border-radius: 50px;
  padding: 16px 44px; font-size: 1.05rem; font-weight: 700;
  cursor: pointer; transition: all 0.25s ease;
  box-shadow: 0 8px 24px rgba(37,99,235,0.40);
  letter-spacing: 0.2px; font-family: inherit;
  position: relative; overflow: hidden;
}
.gk-btn-primary::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 60%);
  pointer-events: none;
}
.gk-btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 14px 36px rgba(37,99,235,0.50);
}
.gk-btn-primary:active { transform: translateY(0) scale(0.98); }
.gk-btn-arrow { font-size: 1.1rem; }

.gk-intro-note {
  margin: 18px 0 0; font-size: 0.78rem; color: #94a3b8; letter-spacing: 0.2px;
}

.gk-btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; color: var(--gk-blue);
  border: 2px solid var(--gk-blue); border-radius: 50px;
  padding: 14px 32px; font-size: 1rem; font-weight: 700;
  cursor: pointer; transition: all 0.2s ease; font-family: inherit;
}
.gk-btn-outline:hover { background: var(--gk-blue-light); transform: translateY(-2px); }

/* ── Empty State ───────────────────────────── */
.gk-empty-state {
  text-align: center; padding: 70px 24px;
  background: var(--gk-card); border-radius: var(--gk-radius-lg);
  box-shadow: var(--gk-shadow);
}
.gk-empty-icon { font-size: 4rem; margin-bottom: 16px; }
.gk-empty-state h3 { font-size: 1.3rem; color: var(--gk-text); margin-bottom: 8px; }
.gk-empty-state p { color: var(--gk-subtext); font-size: 0.93rem; line-height: 1.7; }

/* =============================================
   QUIZ HEADER
   ============================================= */
.gk-quiz-header {
  background: var(--gk-card);
  border-radius: var(--gk-radius);
  padding: 18px 24px;
  box-shadow: var(--gk-shadow);
  margin-bottom: 18px;
  display: flex; justify-content: space-between; align-items: center;
  gap: 20px; flex-wrap: wrap;
  border: 1px solid var(--gk-border);
}
.gk-progress-wrap { flex: 1; min-width: 180px; }
.gk-progress-text {
  display: flex; justify-content: space-between;
  font-size: 0.82rem; color: var(--gk-subtext); font-weight: 600;
  margin-bottom: 8px;
}
.gk-progress-bar {
  height: 7px; background: #e8eeff; border-radius: 50px; overflow: hidden;
}
.gk-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gk-blue) 0%, #7c3aed 100%);
  border-radius: 50px; transition: width 0.5s cubic-bezier(.4,0,.2,1);
  width: 0%;
}
.gk-timer-wrap {
  display: flex; align-items: center; gap: 8px;
  background: var(--gk-orange-bg);
  border: 1.5px solid #fed7aa;
  border-radius: 50px; padding: 9px 20px;
  white-space: nowrap;
}
.gk-timer-icon { font-size: 1rem; }
.gk-timer {
  font-size: 1.2rem; font-weight: 800; color: var(--gk-orange);
  font-variant-numeric: tabular-nums; letter-spacing: 1.5px;
}
.gk-timer.gk-danger { color: var(--gk-red); animation: gkBlink 0.9s infinite; }
@keyframes gkBlink { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

/* =============================================
   QUESTION CARD
   ============================================= */
.gk-question-card {
  background: var(--gk-card);
  border-radius: var(--gk-radius-lg);
  box-shadow: var(--gk-shadow);
  padding: 34px 36px 30px;
  position: relative;
  margin-bottom: 18px;
  min-height: 300px;
  border: 1px solid var(--gk-border);
  transition: opacity 0.22s ease;
}
.gk-question-card::before {
  content: '';
  position: absolute; top: 0; left: 0; width: 4px;
  bottom: 0; border-radius: 20px 0 0 20px;
  background: linear-gradient(180deg, var(--gk-blue), #7c3aed);
}
.gk-qnum {
  font-size: 0.75rem; font-weight: 800; letter-spacing: 1.5px;
  color: var(--gk-blue); text-transform: uppercase; margin-bottom: 12px;
  display: flex; align-items: center; gap: 8px;
}
.gk-qnum::after {
  content: ''; flex: 1; height: 1px; background: var(--gk-border);
}
.gk-qbookmark {
  position: absolute; top: 20px; right: 22px;
  font-size: 1.4rem; cursor: pointer; transition: all 0.2s;
  color: #cbd5e1; user-select: none; line-height: 1;
}
.gk-qbookmark:hover { color: var(--gk-orange); transform: scale(1.2); }
.gk-qbookmark.bookmarked { color: var(--gk-orange); }
.gk-question-text {
  font-size: 1.1rem; font-weight: 600; line-height: 1.75;
  margin-bottom: 26px; color: var(--gk-text); padding-right: 30px;
}

/* ── Options ─────────────────────────────── */
.gk-options { display: flex; flex-direction: column; gap: 11px; }
.gk-option {
  display: flex; align-items: center; gap: 14px;
  padding: 13px 18px; border-radius: var(--gk-radius-sm);
  border: 1.5px solid var(--gk-border);
  cursor: pointer; transition: all 0.18s ease;
  font-size: 0.96rem; font-weight: 500; background: #fafbff;
}
.gk-option:hover {
  border-color: var(--gk-blue); background: var(--gk-blue-light);
  transform: translateX(3px);
}
.gk-option.selected {
  border-color: var(--gk-blue); background: var(--gk-blue-light);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.10);
}
.gk-option-key {
  min-width: 34px; height: 34px; border-radius: 8px;
  background: var(--gk-border); color: var(--gk-subtext);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 0.88rem; flex-shrink: 0;
  transition: all 0.18s;
}
.gk-option.selected .gk-option-key {
  background: var(--gk-blue); color: #fff;
  box-shadow: 0 3px 10px rgba(37,99,235,0.35);
}

/* =============================================
   NAVIGATION
   ============================================= */
.gk-nav {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 14px; gap: 12px;
}
.gk-btn-nav {
  background: var(--gk-card); color: var(--gk-blue);
  border: 1.5px solid #c7d2fe; border-radius: 50px;
  padding: 10px 24px; font-size: 0.92rem; font-weight: 700;
  cursor: pointer; transition: all 0.2s; font-family: inherit;
  box-shadow: 0 2px 8px rgba(37,99,235,0.08);
}
.gk-btn-nav:hover { background: var(--gk-blue); color: #fff; border-color: var(--gk-blue); }
.gk-btn-nav:disabled { opacity: 0.35; cursor: not-allowed; box-shadow: none; }

/* Dot nav */
.gk-dot-nav {
  display: flex; gap: 5px; flex-wrap: wrap;
  justify-content: center; max-width: 380px;
}
.gk-dot {
  width: 18px; height: 18px; border-radius: 50%;
  cursor: pointer; transition: all 0.2s;
  border: 2px solid var(--gk-border); background: var(--gk-card);
  flex-shrink: 0;
}
.gk-dot.answered  { background: var(--gk-blue);   border-color: var(--gk-blue); }
.gk-dot.current   { border-color: var(--gk-orange); box-shadow: 0 0 0 3px rgba(249,115,22,0.22); }
.gk-dot.bookmarked-dot { background: var(--gk-orange); border-color: var(--gk-orange); }

/* Submit */
.gk-submit-wrap { text-align: center; padding-top: 6px; }
.gk-btn-submit {
  background: linear-gradient(135deg, var(--gk-green) 0%, #15803d 100%);
  color: #fff; border: none; border-radius: 50px;
  padding: 15px 46px; font-size: 1.02rem; font-weight: 800;
  cursor: pointer; transition: all 0.22s;
  box-shadow: 0 8px 24px rgba(22,163,74,0.38);
  font-family: inherit; letter-spacing: 0.2px;
}
.gk-btn-submit:hover { transform: translateY(-3px); box-shadow: 0 14px 32px rgba(22,163,74,0.45); }

/* =============================================
   RESULT SCREEN
   ============================================= */
.gk-result-header {
  background: var(--gk-card);
  border-radius: var(--gk-radius-lg);
  box-shadow: var(--gk-shadow-lg);
  padding: 52px 32px 36px;
  text-align: center; margin-bottom: 18px;
  border: 1px solid var(--gk-border);
  position: relative; overflow: hidden;
}
.gk-result-header::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--gk-green), #4ade80);
}
.gk-result-icon { font-size: 3.8rem; margin-bottom: 10px; display: block; }
.gk-result-title {
  font-size: 1.75rem; font-weight: 800; color: var(--gk-text); margin: 0 0 28px;
}
.gk-score-circle {
  width: 140px; height: 140px; border-radius: 50%;
  background: linear-gradient(135deg, var(--gk-blue) 0%, #4f46e5 100%);
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; margin: 0 auto;
  box-shadow: 0 12px 36px rgba(37,99,235,0.40);
}
.gk-score-val { font-size: 2.4rem; font-weight: 800; color: #fff; line-height: 1; }
.gk-score-lbl { font-size: 0.72rem; color: rgba(255,255,255,0.8); font-weight: 700; text-transform: uppercase; letter-spacing: 1px; margin-top: 2px; }

.gk-result-stats {
  display: grid; grid-template-columns: repeat(4,1fr);
  gap: 12px; margin-bottom: 22px;
}
.gk-rstat {
  background: var(--gk-card); border-radius: var(--gk-radius);
  padding: 22px 12px; text-align: center;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  border-top: 3px solid var(--gk-border);
  border: 1px solid var(--gk-border);
  border-top-width: 3px;
}
.gk-rstat.gk-total    { border-top-color: var(--gk-blue); }
.gk-rstat.gk-attempted{ border-top-color: var(--gk-orange); }
.gk-rstat.gk-correct  { border-top-color: var(--gk-green); }
.gk-rstat.gk-wrong    { border-top-color: var(--gk-red); }
.gk-rstat-num { font-size: 2rem; font-weight: 800; color: var(--gk-text); }
.gk-rstat-lbl { font-size: 0.78rem; color: var(--gk-subtext); font-weight: 600; margin-top: 4px; }

.gk-result-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }

/* =============================================
   REVIEW SCREEN
   ============================================= */
.gk-review-header {
  display: flex; align-items: center; gap: 16px;
  margin-bottom: 18px; flex-wrap: wrap;
}
.gk-review-header h2 { font-size: 1.3rem; font-weight: 800; margin: 0; color: var(--gk-text); }
.gk-btn-back {
  background: var(--gk-card); color: var(--gk-blue);
  border: 1.5px solid #c7d2fe; border-radius: 50px;
  padding: 8px 20px; font-size: 0.88rem; font-weight: 700;
  cursor: pointer; font-family: inherit; transition: all 0.2s;
}
.gk-btn-back:hover { background: var(--gk-blue); color: #fff; }

.gk-review-item {
  background: var(--gk-card); border-radius: var(--gk-radius);
  padding: 24px 26px; margin-bottom: 14px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.05);
  border: 1px solid var(--gk-border);
  border-left: 4px solid var(--gk-border);
}
.gk-review-item.gk-rv-correct  { border-left-color: var(--gk-green); }
.gk-review-item.gk-rv-wrong    { border-left-color: var(--gk-red); }
.gk-review-item.gk-rv-skipped  { border-left-color: #94a3b8; }
.gk-rv-qnum  { font-size: 0.73rem; font-weight: 700; color: var(--gk-subtext); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 6px; }
.gk-rv-status { display: inline-flex; align-items: center; gap: 5px; margin-bottom: 10px; font-size: 0.82rem; font-weight: 700; border-radius: 50px; padding: 3px 12px; }
.gk-rv-status.correct { background: var(--gk-green-bg); color: var(--gk-green); }
.gk-rv-status.wrong   { background: var(--gk-red-bg);   color: var(--gk-red); }
.gk-rv-status.skipped { background: #f1f5f9; color: #64748b; }
.gk-rv-question { font-size: 1rem; font-weight: 600; margin-bottom: 16px; line-height: 1.65; color: var(--gk-text); }
.gk-rv-options { display: flex; flex-direction: column; gap: 8px; }
.gk-rv-opt {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-radius: 8px;
  font-size: 0.9rem; font-weight: 500;
  background: #f8fafc; border: 1px solid var(--gk-border);
}
.gk-rv-opt.gk-opt-correct { background: var(--gk-green-bg); border-color: #86efac; color: #166534; }
.gk-rv-opt.gk-opt-wrong   { background: var(--gk-red-bg);   border-color: #fca5a5; color: #991b1b; }
.gk-rv-opt-key  { font-weight: 800; min-width: 22px; }
.gk-rv-badge    { margin-left: auto; font-size: 0.78rem; font-weight: 700; white-space: nowrap; }

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 600px) {
  .gk-intro-card { padding: 36px 20px 30px; }
  .gk-intro-title { font-size: 1.55rem; }
  .gk-intro-stats { flex-direction: column; align-items: stretch; }
  .gk-stat-card   { max-width: 100%; }
  .gk-question-card { padding: 24px 18px 20px; }
  .gk-question-text { font-size: 1rem; }
  .gk-quiz-header { flex-direction: column; align-items: stretch; }
  .gk-timer-wrap  { justify-content: center; }
  .gk-result-stats { grid-template-columns: repeat(2,1fr); }
  .gk-nav { flex-direction: column; align-items: stretch; }
  .gk-btn-nav { text-align: center; }
  .gk-dot-nav { max-width: 100%; }
  .gk-dot { width: 15px; height: 15px; }
  .gk-review-item { padding: 18px 16px; }
  .gk-btn-primary, .gk-btn-outline { padding: 14px 28px; font-size: 0.97rem; width: 100%; justify-content: center; }
  .gk-result-actions { flex-direction: column; align-items: stretch; }
}