/* ============================================
   IQ TEST PRO - Main Stylesheet
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --iq-primary: #6366F1;
  --iq-primary-dark: #4F46E5;
  --iq-primary-light: #A5B4FC;
  --iq-accent: #EC4899;
  --iq-success: #10B981;
  --iq-danger: #EF4444;
  --iq-warning: #F59E0B;
  --iq-bg: #0F0F1A;
  --iq-surface: #1A1A2E;
  --iq-surface2: #252540;
  --iq-border: rgba(99, 102, 241, 0.2);
  --iq-text: #E2E8F0;
  --iq-text-muted: #94A3B8;
  --iq-radius: 16px;
  --iq-shadow: 0 20px 60px rgba(0,0,0,0.5);
  --iq-font: 'DM Sans', sans-serif;
  --iq-font-display: 'Space Grotesk', sans-serif;
  --iq-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== WRAPPER ===== */
.iq-test-wrapper {
  font-family: var(--iq-font);
  color: var(--iq-text);
  max-width: 720px;
  margin: 0 auto;
  padding: 16px;
  position: relative;
}

.iq-screen {
  display: none;
  animation: iqFadeIn 0.4s ease;
}

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

@keyframes iqFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ===== HERO / START SCREEN ===== */
.iq-hero {
  background: linear-gradient(135deg, #1A1A2E 0%, #16213E 50%, #0F3460 100%);
  border: 1px solid var(--iq-border);
  border-radius: 24px;
  padding: 48px 40px;
  text-align: center;
  box-shadow: var(--iq-shadow), inset 0 1px 0 rgba(255,255,255,0.05);
  position: relative;
  overflow: hidden;
}

.iq-hero::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(99,102,241,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.iq-hero-icon {
  font-size: 64px;
  margin-bottom: 16px;
  display: block;
  filter: drop-shadow(0 0 20px rgba(99,102,241,0.5));
  animation: iqFloat 3s ease-in-out infinite;
}

@keyframes iqFloat {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.iq-hero-title {
  font-family: var(--iq-font-display);
  font-size: 2.4rem;
  font-weight: 700;
  margin: 0 0 8px;
  background: linear-gradient(135deg, #E2E8F0, var(--iq-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.iq-hero-subtitle {
  color: var(--iq-text-muted);
  font-size: 1.05rem;
  margin: 0 0 32px;
}

.iq-info-grid {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
}

.iq-info-card {
  background: rgba(99,102,241,0.1);
  border: 1px solid var(--iq-border);
  border-radius: 12px;
  padding: 16px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  min-width: 90px;
}

.iq-info-icon { font-size: 1.4rem; }
.iq-info-card strong { font-size: 1.6rem; font-weight: 700; color: var(--iq-primary-light); font-family: var(--iq-font-display); }
.iq-info-card span { font-size: 0.8rem; color: var(--iq-text-muted); }

.iq-name-field {
  margin-bottom: 28px;
  text-align: left;
}

.iq-name-field label {
  display: block;
  font-size: 0.85rem;
  color: var(--iq-text-muted);
  margin-bottom: 8px;
}

.iq-name-field input {
  width: 100%;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--iq-border);
  border-radius: 10px;
  padding: 12px 16px;
  color: var(--iq-text);
  font-size: 0.95rem;
  font-family: var(--iq-font);
  transition: var(--iq-transition);
  box-sizing: border-box;
}

.iq-name-field input:focus {
  outline: none;
  border-color: var(--iq-primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

.iq-name-field input::placeholder { color: var(--iq-text-muted); }

.iq-tips {
  background: rgba(99,102,241,0.07);
  border: 1px solid var(--iq-border);
  border-radius: 12px;
  padding: 20px 24px;
  text-align: left;
  margin-bottom: 32px;
}

.iq-tips h3 {
  margin: 0 0 12px;
  font-size: 0.95rem;
  color: var(--iq-primary-light);
}

.iq-tips ul {
  margin: 0;
  padding-left: 20px;
  list-style: none;
}

.iq-tips ul li {
  padding: 4px 0;
  font-size: 0.9rem;
  color: var(--iq-text-muted);
  position: relative;
}

.iq-tips ul li::before {
  content: '→';
  position: absolute;
  left: -18px;
  color: var(--iq-primary);
}

/* ===== BUTTONS ===== */
.iq-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--iq-font);
  cursor: pointer;
  border: none;
  transition: var(--iq-transition);
}

.iq-btn-primary {
  background: linear-gradient(135deg, var(--iq-primary), var(--iq-primary-dark));
  color: #fff;
  box-shadow: 0 4px 20px rgba(99,102,241,0.4);
}

.iq-btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99,102,241,0.5);
}

.iq-btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.iq-btn-outline {
  background: transparent;
  border: 2px solid var(--iq-border);
  color: var(--iq-text);
}

.iq-btn-outline:hover {
  border-color: var(--iq-primary);
  color: var(--iq-primary-light);
}

.iq-btn-secondary {
  background: rgba(236,72,153,0.15);
  border: 1px solid rgba(236,72,153,0.3);
  color: #F9A8D4;
}

.iq-btn-secondary:hover {
  background: rgba(236,72,153,0.25);
}

/* ===== QUIZ SCREEN ===== */
.iq-quiz-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  padding: 0 4px;
}

.iq-progress-info {
  font-family: var(--iq-font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--iq-text);
}

.iq-progress-sep { color: var(--iq-text-muted); margin: 0 4px; }

.iq-timer-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--iq-font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--iq-text);
  background: rgba(99,102,241,0.1);
  border: 1px solid var(--iq-border);
  border-radius: 10px;
  padding: 8px 16px;
}

.iq-timer-wrap.urgent {
  color: var(--iq-danger) !important;
  border-color: rgba(239,68,68,0.4) !important;
  animation: iqPulse 1s ease infinite;
}

@keyframes iqPulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(239,68,68,0.3); }
  50% { box-shadow: 0 0 0 6px rgba(239,68,68,0); }
}

.iq-category-badge {
  background: rgba(16,185,129,0.1);
  border: 1px solid rgba(16,185,129,0.3);
  border-radius: 20px;
  padding: 4px 14px;
  font-size: 0.8rem;
  color: #6EE7B7;
}

.iq-progress-bar-wrap {
  width: 100%;
  height: 6px;
  background: rgba(255,255,255,0.05);
  border-radius: 100px;
  margin-bottom: 24px;
  overflow: hidden;
}

.iq-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--iq-primary), var(--iq-accent));
  border-radius: 100px;
  transition: width 0.4s ease;
}

.iq-question-area {
  background: linear-gradient(135deg, #1A1A2E, #16213E);
  border: 1px solid var(--iq-border);
  border-radius: var(--iq-radius);
  padding: 32px;
  margin-bottom: 16px;
  min-height: 360px;
  box-shadow: var(--iq-shadow);
}

.iq-question-number {
  font-size: 0.8rem;
  color: var(--iq-primary-light);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.iq-question-text {
  font-family: var(--iq-font-display);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--iq-text);
  line-height: 1.6;
  margin-bottom: 28px;
}

.iq-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.iq-option {
  background: rgba(255,255,255,0.04);
  border: 2px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 14px 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: var(--iq-transition);
  text-align: left;
  color: var(--iq-text);
  font-size: 0.95rem;
  font-family: var(--iq-font);
}

.iq-option:hover {
  background: rgba(99,102,241,0.12);
  border-color: rgba(99,102,241,0.4);
  transform: translateY(-1px);
}

.iq-option.selected {
  background: rgba(99,102,241,0.2);
  border-color: var(--iq-primary);
  color: #fff;
}

.iq-option.correct {
  background: rgba(16,185,129,0.15);
  border-color: var(--iq-success);
  color: #6EE7B7;
}

.iq-option.wrong {
  background: rgba(239,68,68,0.12);
  border-color: var(--iq-danger);
  color: #FCA5A5;
}

.iq-option-letter {
  width: 28px; height: 28px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.iq-option.selected .iq-option-letter { background: var(--iq-primary); }
.iq-option.correct .iq-option-letter { background: var(--iq-success); }
.iq-option.wrong .iq-option-letter { background: var(--iq-danger); }

.iq-quiz-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.iq-answered-count {
  font-size: 0.9rem;
  color: var(--iq-text-muted);
}

/* ===== LOADING SCREEN ===== */
#iq-screen-loading {
  text-align: center;
  padding: 80px 40px;
}

.iq-brain-anim {
  font-size: 72px;
  display: block;
  animation: iqBrain 1.5s ease-in-out infinite;
  filter: drop-shadow(0 0 20px rgba(99,102,241,0.6));
}

@keyframes iqBrain {
  0%,100% { transform: scale(1) rotate(-5deg); }
  50% { transform: scale(1.1) rotate(5deg); }
}

#iq-screen-loading h2 {
  font-family: var(--iq-font-display);
  font-size: 1.8rem;
  margin: 24px 0 8px;
}

#iq-screen-loading p {
  color: var(--iq-text-muted);
  margin-bottom: 32px;
}

.iq-loading-bar {
  width: 100%;
  max-width: 400px;
  height: 8px;
  background: rgba(255,255,255,0.05);
  border-radius: 100px;
  overflow: hidden;
  margin: 0 auto 24px;
}

.iq-loading-progress {
  height: 100%;
  background: linear-gradient(90deg, var(--iq-primary), var(--iq-accent));
  border-radius: 100px;
  width: 0%;
  transition: width 0.3s ease;
}

.iq-loading-steps { color: var(--iq-text-muted); font-size: 0.9rem; }
.iq-loading-step { display: none; }
.iq-loading-step.active { display: block; animation: iqFadeIn 0.3s ease; }

/* ===== RESULTS SCREEN ===== */
.iq-results-inner {
  max-width: 680px;
  margin: 0 auto;
}

.iq-results-header {
  text-align: center;
  padding: 40px 20px 32px;
  background: linear-gradient(135deg, #1A1A2E, #16213E);
  border: 1px solid var(--iq-border);
  border-radius: 24px;
  margin-bottom: 20px;
  box-shadow: var(--iq-shadow);
}

.iq-iq-badge {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.iq-iq-ring {
  position: relative;
  width: 160px; height: 160px;
}

.iq-iq-ring svg {
  width: 100%; height: 100%;
}

.iq-ring-content {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.iq-score-number {
  font-family: var(--iq-font-display);
  font-size: 2.8rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}

.iq-score-label {
  font-size: 0.9rem;
  color: var(--iq-text-muted);
  font-weight: 600;
}

.iq-level-badge {
  display: inline-block;
  padding: 8px 24px;
  border-radius: 100px;
  font-weight: 700;
  font-size: 1.1rem;
  font-family: var(--iq-font-display);
  margin-bottom: 12px;
}

.iq-level-desc {
  color: var(--iq-text-muted);
  font-size: 0.95rem;
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Stats */
.iq-results-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.iq-stat-card {
  background: var(--iq-surface);
  border: 1px solid var(--iq-border);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.iq-stat-num {
  font-family: var(--iq-font-display);
  font-size: 1.6rem;
  font-weight: 700;
}

.iq-stat-lbl {
  font-size: 0.78rem;
  color: var(--iq-text-muted);
}

.iq-stat-correct .iq-stat-num { color: var(--iq-success); }
.iq-stat-wrong .iq-stat-num { color: var(--iq-danger); }
.iq-stat-time .iq-stat-num { color: var(--iq-warning); }
.iq-stat-pct .iq-stat-num { color: var(--iq-primary-light); }

/* Categories */
.iq-categories-wrap {
  background: var(--iq-surface);
  border: 1px solid var(--iq-border);
  border-radius: var(--iq-radius);
  padding: 24px;
  margin-bottom: 20px;
}

.iq-categories-wrap h3 {
  margin: 0 0 20px;
  font-size: 1rem;
  font-family: var(--iq-font-display);
}

.iq-category-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.iq-cat-name {
  width: 120px;
  font-size: 0.85rem;
  color: var(--iq-text-muted);
  flex-shrink: 0;
}

.iq-cat-bar-wrap {
  flex: 1;
  height: 8px;
  background: rgba(255,255,255,0.05);
  border-radius: 100px;
  overflow: hidden;
}

.iq-cat-bar {
  height: 100%;
  border-radius: 100px;
  background: linear-gradient(90deg, var(--iq-primary), var(--iq-accent));
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.iq-cat-pct {
  font-size: 0.85rem;
  font-weight: 600;
  width: 36px;
  text-align: right;
  color: var(--iq-text);
}

/* IQ Scale */
.iq-scale-wrap {
  background: var(--iq-surface);
  border: 1px solid var(--iq-border);
  border-radius: var(--iq-radius);
  padding: 24px;
  margin-bottom: 20px;
}

.iq-scale-wrap h3 {
  margin: 0 0 20px;
  font-size: 1rem;
  font-family: var(--iq-font-display);
}

.iq-scale-bar {
  width: 100%;
  height: 16px;
  background: linear-gradient(90deg, #DC2626, #EF4444, #F59E0B, #10B981, #6366F1, #8B5CF6);
  border-radius: 100px;
  position: relative;
  margin-bottom: 8px;
}

.iq-scale-marker {
  position: absolute;
  top: -6px;
  width: 28px; height: 28px;
  background: #fff;
  border: 3px solid #1A1A2E;
  border-radius: 50%;
  transform: translateX(-50%);
  box-shadow: 0 2px 12px rgba(0,0,0,0.4);
  transition: left 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.iq-scale-labels, .iq-scale-zones {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--iq-text-muted);
  margin-top: 4px;
}

/* Answers review */
.iq-answers-review {
  background: var(--iq-surface);
  border: 1px solid var(--iq-border);
  border-radius: var(--iq-radius);
  padding: 20px 24px;
  margin-bottom: 20px;
  cursor: pointer;
}

.iq-answers-review summary {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--iq-text);
  list-style: none;
  cursor: pointer;
}

.iq-answers-review summary::-webkit-details-marker { display: none; }

.iq-answers-list {
  margin-top: 20px;
}

.iq-answer-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.iq-answer-item:last-child { border-bottom: none; }

.iq-answer-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 0.9rem;
}

.iq-answer-icon.correct { background: rgba(16,185,129,0.2); color: var(--iq-success); }
.iq-answer-icon.wrong { background: rgba(239,68,68,0.2); color: var(--iq-danger); }

.iq-answer-text { flex: 1; }
.iq-answer-q { font-size: 0.85rem; color: var(--iq-text-muted); margin-bottom: 4px; }
.iq-answer-yours { font-size: 0.9rem; color: var(--iq-text); }
.iq-answer-correct { font-size: 0.85rem; color: var(--iq-success); }

/* Actions */
.iq-results-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  padding: 8px 0;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 600px) {
  .iq-hero { padding: 32px 20px; }
  .iq-hero-title { font-size: 1.8rem; }
  .iq-info-grid { gap: 8px; }
  .iq-info-card { padding: 12px 14px; min-width: 70px; }
  .iq-options { grid-template-columns: 1fr; }
  .iq-question-area { padding: 20px; }
  .iq-results-stats { grid-template-columns: repeat(2, 1fr); }
  .iq-results-actions { flex-direction: column; }
  .iq-btn { justify-content: center; }
  .iq-quiz-header { flex-wrap: wrap; gap: 8px; }
}