:root {
  --black: #050505;
  --dark: #0a0a0a;
  --dark2: #111;
  --green: #00e676;
  --green-dim: #00e67612;
  --green-glow: #00e67640;
  --green-mid: #00c853;
  --white: #e8f5e9;
  --gray: #333;
  --text: #9ecf9e;
}

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

body {
  background-color: var(--black);
  background-image:
    linear-gradient(rgba(0,230,118,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,230,118,0.035) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--white);
  font-family: Arial, sans-serif;
  font-weight: 400;
  min-height: 100vh;
  overflow-x: hidden;
}

.page {
  display: none;
  position: relative;
  z-index: 1;
  min-height: 100vh;
  padding: 0 0 40px;
  animation: fadeInPage 0.6s ease;
}
.page.active { display: block; }

@keyframes fadeInPage {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero {
  position: relative;
  padding: 52px 24px 36px;
  text-align: center;
  border-bottom: 1px solid #1a2e1a;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 0%, #00e67610 0%, transparent 70%);
}

.badge {
  display: inline-block;
  font-family: Arial, sans-serif;
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.5px;
  color: var(--green);
  border: 1px solid var(--green-glow);
  padding: 4px 13px;
  border-radius: 20px;
  margin-bottom: 18px;
  background: var(--green-dim);
}

h1 {
  font-family: Arial, sans-serif;
  font-size: clamp(24px, 7vw, 40px);
  font-weight: 500;
  line-height: 1.2;
  color: #fff;
}
h1 span { color: var(--green); }

.subtitle {
  font-size: 14px;
  color: var(--text);
  margin-top: 10px;
  font-weight: 400;
  letter-spacing: 0.5px;
}

.content-section {
  margin: 20px 20px;
  background: rgba(13, 26, 13, 0.5);
  border: 1px solid #1c2e1c;
  border-radius: 14px;
  padding: 20px 18px;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.content-section::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 2px; height: 100%;
  background: linear-gradient(to bottom, var(--green), transparent);
}

.section-label {
  font-family: Arial, sans-serif;
  font-size: 8px;
  font-weight: 400;
  letter-spacing: 0.5px;
  color: var(--green);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.content-section h2 {
  font-size: 17px;
  font-weight: 500;
  margin-bottom: 9px;
  color: #fff;
}

.content-section p {
  font-size: 14px;
  color: var(--text);
  line-height: 1.75;
  font-weight: 400;
}

.stats-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 0 20px 20px;
}
.stat-card {
  background: rgba(13, 21, 13, 0.6);
  border: 1px solid #1c2e1c;
  border-radius: 12px;
  padding: 15px 12px;
  text-align: center;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.stat-card::after {
  content: '';
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--green-glow), transparent);
}
.stat-number {
  font-family: Arial, sans-serif;
  font-size: 22px;
  font-weight: 500;
  color: var(--green);
  display: block;
}
.stat-label {
  font-size: 11px;
  font-weight: 400;
  color: var(--text);
  letter-spacing: 0.3px;
  line-height: 1.4;
  margin-top: 4px;
  display: block;
}

.icon-wrap {
  width: 68px; height: 68px;
  border-radius: 50%;
  border: 1px solid var(--green-glow);
  background: var(--green-dim);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px;
  animation: pulse-ring 2.5s ease infinite;
  font-size: 28px;
}
@keyframes pulse-ring {
  0%, 100% { box-shadow: 0 0 0 0 var(--green-glow), 0 0 16px var(--green-dim); }
  50%       { box-shadow: 0 0 0 8px transparent, 0 0 24px var(--green-glow); }
}

.btn-glass {
  display: inline-flex;
  align-items: center; justify-content: center;
  gap: 8px;
  font-family: Arial, sans-serif;
  font-size: 10px;
  letter-spacing: 0.4px;
  font-weight: 400;
  color: var(--green);
  border: 1px solid var(--green-glow);
  background: rgba(0,230,118,0.02);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 14px 30px;
  min-height: 48px;
  border-radius: 40px;
  cursor: pointer;
  transition: background 0.3s ease, box-shadow 0.3s ease, transform 0.15s ease;
  text-decoration: none;
  position: relative;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
}
.btn-glass:hover {
  background: rgba(0,230,118,0.06);
  box-shadow: 0 0 16px var(--green-glow), 0 4px 16px rgba(0,0,0,0.3);
}
.btn-glass:active {
  background: rgba(0,230,118,0.1);
  box-shadow: none;
  transform: scale(0.97);
}

.btn-center { text-align: center; margin: 16px 20px 10px; }

.quiz-header {
  padding: 44px 20px 18px;
  text-align: center;
}
.quiz-header h1 {
  font-size: clamp(20px, 6vw, 30px);
}

.progress-bar-wrap {
  margin: 0 20px 20px;
  background: #111;
  border-radius: 20px;
  height: 5px;
  overflow: hidden;
  border: 1px solid #1c2e1c;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(to right, var(--green-mid), var(--green));
  border-radius: 20px;
  transition: width 0.5s ease;
  box-shadow: 0 0 6px var(--green-glow);
  width: 0%;
}
.progress-label {
  font-size: 11px;
  font-weight: 400;
  color: var(--green);
  font-family: Arial, sans-serif;
  margin: -18px 20px 18px;
  letter-spacing: 0.4px;
  text-align: right;
}

.question-card {
  margin: 0 20px 18px;
  background: rgba(10, 15, 10, 0.55);
  border: 1px solid #1c2e1c;
  border-radius: 14px;
  padding: 20px 18px;
  min-height: 80px;
  display: flex; align-items: center;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.question-text {
  font-size: 15px;
  font-weight: 400;
  line-height: 1.55;
  color: #fff;
}

.options-grid {
  display: flex; flex-direction: column;
  gap: 9px;
  margin: 0 20px;
}
.option-btn {
  width: 100%;
  background: rgba(0,230,118,0.02);
  border: 1px solid #1c2e1c;
  border-radius: 12px;
  padding: 15px 16px;
  min-height: 52px;
  text-align: left;
  font-family: Arial, sans-serif;
  font-size: 14px;
  font-weight: 400;
  color: var(--text);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
  display: flex; align-items: center; gap: 12px;
  position: relative;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
}
.option-btn .opt-letter {
  font-family: Arial, sans-serif;
  font-size: 9px;
  font-weight: 400;
  color: var(--green);
  border: 1px solid var(--green-glow);
  border-radius: 5px;
  padding: 2px 6px;
  flex-shrink: 0;
  background: var(--green-dim);
}
.option-btn:hover:not(:disabled) {
  border-color: var(--green-glow);
  background: rgba(0,230,118,0.06);
  color: #fff;
}
.option-btn.correct {
  border-color: var(--green);
  background: rgba(0,230,118,0.12);
  color: #fff;
}
.option-btn.wrong {
  border-color: #f44336;
  background: rgba(244,67,54,0.08);
  color: #ff8a80;
}
.option-btn:disabled { cursor: default; }

.feedback-msg {
  text-align: center;
  font-size: 13px;
  font-weight: 400;
  margin: 10px 20px 0;
  min-height: 20px;
  transition: all 0.3s;
  letter-spacing: 0.3px;
  line-height: 1.5;
}
.feedback-msg.ok  { color: var(--green); }
.feedback-msg.bad { color: #f44336; }

.result-page {
  padding: 32px 0 40px;
  text-align: center;
  min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: flex-start;
}
.result-score {
  font-family: Arial, sans-serif;
  font-size: clamp(48px, 15vw, 72px);
  font-weight: 500;
  color: var(--green);
  text-shadow: 0 0 24px var(--green-glow);
  display: block;
  margin: 18px 0 8px;
  animation: scoreAnim 1s cubic-bezier(0.34,1.56,0.64,1) both;
}
@keyframes scoreAnim {
  from { transform: scale(0.4); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}
.result-title {
  font-family: Arial, sans-serif;
  font-size: 18px;
  font-weight: 500;
  color: #fff;
  margin-bottom: 8px;
}
.result-sub {
  font-size: 14px;
  font-weight: 400;
  color: var(--text);
  line-height: 1.65;
  max-width: 320px;
  margin-bottom: 28px;
}

.cert-wrap {
  width: calc(100% - 40px);
  margin: 0 20px 22px;
  background: rgba(11, 26, 11, 0.4);
  border: 1px solid var(--green-glow);
  border-radius: 16px;
  padding: 22px 18px;
  position: relative;
  overflow: hidden;
  text-align: center;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.cert-wrap::before {
  content: '';
  position: absolute; inset: 2px;
  border-radius: 14px;
  border: 1px solid #1c2e1c;
  pointer-events: none;
}
.cert-wrap::after {
  content: '';
  position: absolute; top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(ellipse at center, rgba(0,230,118,0.03) 0%, transparent 60%);
  animation: rotateGlow 8s linear infinite;
}
@keyframes rotateGlow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
.cert-icon {
  font-size: 38px;
  display: block;
  margin-bottom: 10px;
  position: relative; z-index: 1;
}
.cert-title {
  font-family: Arial, sans-serif;
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.5px;
  color: var(--green);
  text-transform: uppercase;
  margin-bottom: 12px;
  position: relative; z-index: 1;
}
.cert-name {
  font-family: Arial, sans-serif;
  font-size: clamp(15px, 5vw, 20px);
  font-weight: 500;
  color: #fff;
  margin-bottom: 10px;
  position: relative; z-index: 1;
  text-shadow: 0 0 12px var(--green-glow);
}
.cert-text {
  font-size: 12px;
  font-weight: 400;
  color: var(--text);
  line-height: 1.75;
  position: relative; z-index: 1;
}
.cert-seal {
  display: inline-flex;
  align-items: center; justify-content: center;
  width: 48px; height: 48px;
  border-radius: 50%;
  border: 1px solid var(--green);
  background: var(--green-dim);
  font-size: 20px;
  margin: 14px auto 0;
  animation: pulse-ring 2.5s ease infinite;
  position: relative; z-index: 1;
}

.video-section {
  margin: 0 20px 22px;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid #1c2e1c;
  position: relative;
}
.video-section video {
  width: 100%;
  display: block;
  background: #000;
  max-height: 260px;
  object-fit: contain;
}
.video-overlay-label {
  position: absolute; top: 10px; left: 10px;
  background: rgba(0,0,0,0.75);
  border: 1px solid var(--green-glow);
  border-radius: 5px;
  padding: 3px 10px;
  font-family: Arial, sans-serif;
  font-size: 8px;
  font-weight: 400;
  letter-spacing: 0.4px;
  color: var(--green);
}

.name-input-wrap {
  width: calc(100% - 40px);
  margin: 0 20px 18px;
  position: relative;
}
.name-input-wrap label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.4px;
  color: var(--green);
  font-family: Arial, sans-serif;
  margin-bottom: 7px;
}
.name-input {
  width: 100%;
  background: rgba(0,230,118,0.03);
  border: 1px solid #1c2e1c;
  border-radius: 10px;
  padding: 12px 16px;
  font-family: Arial, sans-serif;
  font-size: 15px;
  font-weight: 400;
  color: #fff;
  outline: none;
  transition: border-color 0.3s;
}
.name-input::placeholder {
  color: #3a503a;
  font-weight: 400;
}
.name-input:focus { border-color: var(--green-glow); }

.field-highlight label {
  font-size: 11px !important;
  letter-spacing: 0.4px !important;
}

.confetti-piece {
  position: fixed;
  width: 7px; height: 7px;
  border-radius: 2px;
  opacity: 0;
  animation: confettiFall 3s ease-in forwards;
  pointer-events: none;
  z-index: 999;
}
@keyframes confettiFall {
  0%   { transform: translateY(-20px) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

.divider {
  height: 1px;
  background: linear-gradient(to right, transparent, #1c2e1c, transparent);
  margin: 6px 20px 22px;
}

.scroll-hint {
  text-align: center;
  padding: 14px;
  font-size: 10px;
  font-weight: 400;
  color: #2a3a2a;
  letter-spacing: 0.5px;
  font-family: Arial, sans-serif;
  animation: blink 2s ease infinite;
}
@keyframes blink {
  0%, 100% { opacity: 0.4; }
  50%       { opacity: 1; }
}

.bombom-wrap {
  text-align: center;
  font-size: 46px;
  margin: 10px 0 4px;
  animation: bounce 1.2s ease infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-7px); }
}
.bombom-label {
  font-size: 12px;
  font-weight: 400;
  color: var(--text);
  letter-spacing: 0.5px;
  text-align: center;
  margin-bottom: 20px;
}

.nav-dots {
  display: flex;
  gap: 6px;
  justify-content: center;
  margin: 0 0 18px;
}
.nav-dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: #1c2e1c;
  transition: all 0.3s;
}
.nav-dot.active {
  background: var(--green);
  box-shadow: 0 0 5px var(--green);
  width: 16px;
  border-radius: 3px;
}

.watch-timer {
  font-family: Arial, sans-serif;
  font-size: 10px;
  font-weight: 400;
  color: var(--green);
  text-align: center;
  letter-spacing: 0.4px;
  margin: -10px 20px 14px;
}

.alert-box {
  margin: 0 20px 18px;
  background: rgba(0,230,118,0.04);
  border: 1px solid var(--green-glow);
  border-radius: 10px;
  padding: 11px 16px;
  font-size: 13px;
  font-weight: 400;
  color: var(--text);
  text-align: center;
  line-height: 1.65;
}

.btn-square {
  border-radius: 12px;
}