/* ===== IMPORTS & RESET ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #7c3aed;
  --primary-dark: #6d28d9;
  --primary-light: #a78bfa;
  --accent: #3b82f6;
  --accent-light: #93c5fd;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --bg: #ffffff;
  --bg-soft: #f8f9fc;
  --bg-card: #ffffff;
  --text: #1e1b4b;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(124, 58, 237, 0.10);
  --shadow-lg: 0 8px 32px rgba(124, 58, 237, 0.15);
  --shadow-xl: 0 20px 60px rgba(124, 58, 237, 0.18);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}


/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 32px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.home-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--primary);
  transition: var(--transition);
  text-decoration: none;
}

.home-btn:hover {
  transform: scale(1.04);
}

.home-btn img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
}

.nav-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.nav-btn.primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
}

.nav-btn.secondary {
  background: var(--bg-soft);
  color: var(--text);
  border: 1px solid var(--border);
}

.nav-btn.danger {
  background: var(--danger);
  color: #fff;
}

.user-greeting {
  font-weight: 600;
  color: var(--primary);
  font-size: 0.95rem;
}

/* ===== HERO / HOME ===== */
.page {
  display: none;
}

.page.active {
  display: block;
}

.hero {
  margin-top: 20px;
  text-align: center;
  padding: 40px 24px 40px;
}

.hero-tagline {
  max-width: 700px;
  margin: 0 auto 16px;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-muted);
  line-height: 1.7;
}

.hero-tagline strong {
  color: var(--primary);
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.hero-logo {
  width: 100px;
  height: 100px;
  border-radius: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-lg);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

/* ===== CATEGORY CARDS ===== */
.categories {
  display: flex;
  justify-content: center;
  align-items: stretch;
  gap: 28px;
  padding: 20px 32px 80px;
  flex-wrap: wrap;
}

.category-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px 36px;
  width: 300px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  border-radius: var(--radius) var(--radius) 0 0;
  transition: height var(--transition);
}

.category-card.puzzle::before {
  background: linear-gradient(90deg, #7c3aed, #a78bfa);
}

.category-card.riddle::before {
  background: linear-gradient(90deg, #3b82f6, #93c5fd);
}

.category-card.quiz::before {
  background: linear-gradient(90deg, #10b981, #6ee7b7);
}

.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.category-card:hover::before {
  height: 6px;
}

.card-icon {
  font-size: 3.2rem;
  margin-bottom: 16px;
  display: block;
}

.category-card h2 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.category-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.card-badge {
  display: inline-block;
  margin-top: 18px;
  padding: 6px 18px;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.category-card.puzzle .card-badge {
  background: #f5f3ff;
  color: var(--primary);
}

.category-card.riddle .card-badge {
  background: #eff6ff;
  color: var(--accent);
}

.category-card.quiz .card-badge {
  background: #ecfdf5;
  color: var(--success);
}

/* ===== CHALLENGE VIEW ===== */
.challenge-container {
  margin-top: 20px;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  padding: 20px 24px 80px;
}

.challenge-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.challenge-title {
  font-size: 1.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.counter-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--primary);
}

.counter-badge .current {
  font-size: 1.3rem;
}

.question-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 36px;
  box-shadow: var(--shadow-md);
  margin-bottom: 24px;
  animation: slideUp 0.4s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.question-label {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--primary-light);
  margin-bottom: 16px;
}

.question-image {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  display: block;
}

.question-text {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.7;
  color: var(--text);
}

/* Quiz options */
.quiz-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 24px;
}

.quiz-option {
  padding: 14px 20px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  background: var(--bg);
  color: var(--text);
  transition: var(--transition);
  text-align: left;
}

.quiz-option:hover {
  border-color: var(--primary-light);
  background: #f5f3ff;
}

.quiz-option.selected {
  border-color: var(--primary);
  background: #f5f3ff;
  color: var(--primary);
}

.quiz-option.correct {
  border-color: var(--success);
  background: #ecfdf5;
  color: var(--success);
}

.quiz-option.wrong {
  border-color: var(--danger);
  background: #fef2f2;
  color: var(--danger);
}

/* Answer area */
.answer-area {
  display: none;
  margin-top: 20px;
  padding: 20px 24px;
  background: linear-gradient(135deg, #f5f3ff, #eff6ff);
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--primary);
  animation: slideUp 0.3s ease;
}

.answer-area.visible {
  display: block;
}

.answer-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--success);
  margin-bottom: 6px;
}

.answer-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}

/* Answer input */
.answer-input-area {
  margin-top: 20px;
  margin-bottom: 16px;
}

.answer-input-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--primary-light);
  margin-bottom: 8px;
}

.answer-input {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
  background: var(--bg-soft);
  color: var(--text);
}

.answer-input:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.1);
}

.answer-input:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* Score badge */
.score-badge {
  background: #ecfdf5 !important;
  color: var(--success) !important;
}

/* Answer area states */
.answer-area.correct {
  background: linear-gradient(135deg, #ecfdf5, #d1fae5);
  border-left-color: var(--success);
}

.answer-area.wrong {
  background: linear-gradient(135deg, #fef2f2, #fee2e2);
  border-left-color: var(--danger);
}

.answer-area.wrong .answer-label {
  color: var(--danger);
}

.challenge-header {
  gap: 10px;
  flex-wrap: wrap;
}

/* Buttons */
.btn-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 8px;
}

.challenge-btn {
  padding: 14px 36px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.challenge-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.challenge-btn.show-answer {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
}

.challenge-btn.next {
  background: linear-gradient(135deg, var(--accent), #2563eb);
  color: #fff;
  display: none;
}

.challenge-btn.next.visible {
  display: flex;
}

.challenge-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ===== COMPLETION SCREEN ===== */
.completion-screen {
  display: none;
  text-align: center;
  padding: 60px 24px;
  animation: slideUp 0.5s ease;
}

.completion-screen.active {
  display: block;
}

.completion-icon {
  font-size: 5rem;
  margin-bottom: 20px;
}

.completion-screen h2 {
  font-size: 2rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.completion-screen p {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 32px;
}

.score-display {
  font-size: 3rem;
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 8px;
}

/* ===== JOKE OVERLAY ===== */
.joke-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  z-index: 200;
  align-items: center;
  justify-content: center;
}

.joke-overlay.active {
  display: flex;
}

.joke-card {
  background: var(--bg-card);
  border-radius: 24px;
  padding: 48px 40px;
  max-width: 480px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow-xl);
  animation: popIn 0.4s ease;
}

@keyframes popIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

.joke-card .reward-badge {
  display: inline-block;
  padding: 6px 20px;
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  color: #fff;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.joke-card .joke-icon {
  font-size: 4rem;
  margin-bottom: 16px;
  display: block;
}

.joke-card .joke-setup {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text);
  line-height: 1.6;
}

.joke-card .joke-punchline {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 28px;
  line-height: 1.6;
}

.joke-dismiss {
  padding: 12px 32px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
}

.joke-dismiss:hover {
  transform: scale(1.05);
}

/* ===== MODALS ===== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(8px);
  z-index: 200;
  align-items: center;
  justify-content: center;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--bg-card);
  border-radius: 24px;
  padding: 40px 36px;
  max-width: 440px;
  width: 90%;
  box-shadow: var(--shadow-xl);
  animation: popIn 0.35s ease;
}

.modal h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 8px;
  text-align: center;
}

.modal .modal-subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 28px;
  font-size: 0.92rem;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  margin-bottom: 6px;
  color: var(--text);
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  transition: var(--transition);
  background: var(--bg-soft);
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.1);
}

.form-error {
  color: var(--danger);
  font-size: 0.82rem;
  font-weight: 600;
  margin-top: 6px;
  display: none;
}

.form-error.visible {
  display: block;
}

.modal-btn {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  margin-top: 8px;
}

.modal-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.modal-btn.secondary {
  background: var(--bg-soft);
  color: var(--text);
  border: 1px solid var(--border);
  margin-top: 10px;
}

.modal-toggle {
  text-align: center;
  margin-top: 18px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.modal-toggle a {
  color: var(--primary);
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
}

.modal-toggle a:hover {
  text-decoration: underline;
}

.close-modal {
  position: absolute;
  top: 16px;
  right: 20px;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--text-muted);
}

/* ===== PROGRESS MODAL ===== */
.progress-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 14px;
  margin-bottom: 24px;
}

.progress-item {
  text-align: center;
  padding: 18px 12px;
  background: var(--bg-soft);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.progress-item .progress-value {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--primary);
  display: block;
}

.progress-item .progress-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 4px;
}

.streak-display {
  text-align: center;
  padding: 20px;
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}

.streak-display .streak-icon {
  font-size: 2.5rem;
}

.streak-display .streak-count {
  font-size: 2rem;
  font-weight: 900;
  color: #92400e;
}

.streak-display .streak-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: #b45309;
}

/* ===== PROGRESS BAR ===== */
.progress-bar-container {
  width: 100%;
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 28px;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 4px;
  transition: width 0.5s ease;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.2rem;
  }

  .categories {
    flex-direction: column;
    align-items: center;
  }

  .category-card {
    width: 100%;
    max-width: 380px;
  }

  .navbar {
    padding: 12px 16px;
  }

  .nav-btn {
    padding: 8px 14px;
    font-size: 0.82rem;
  }

  .quiz-options {
    grid-template-columns: 1fr;
  }

  .challenge-container {
    padding: 30px 16px 60px;
  }

  .progress-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-light);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* ===== TAB SWITCHER (Auth Modal) ===== */
.auth-tabs {
  display: flex;
  background: var(--bg-soft);
  border-radius: var(--radius-sm);
  padding: 4px;
  margin-bottom: 24px;
}

.auth-tab {
  flex: 1;
  padding: 10px;
  border: none;
  background: none;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  border-radius: 8px;
  transition: var(--transition);
  color: var(--text-muted);
}

.auth-tab.active {
  background: #fff;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

/* Forgot password link */
.forgot-link {
  text-align: center;
  margin-top: 14px;
}

.forgot-link a {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
}

.forgot-link a:hover {
  text-decoration: underline;
  color: var(--primary-dark);
}

/* Success message */
.form-success {
  color: var(--success);
  font-size: 0.88rem;
  font-weight: 600;
  margin-top: 6px;
  display: none;
  padding: 10px 14px;
  background: #ecfdf5;
  border-radius: 8px;
  border: 1px solid #6ee7b7;
  line-height: 1.5;
}

.form-success.visible {
  display: block;
}