:root {
  --bg-main: #f4f9f4;
  --bg-alt: #ffffff;
  --ink: #16271f;
  --ink-muted: #4a5a52;
  --primary: #0c7b5f;
  --primary-strong: #085a46;
  --accent: #e68d23;
  --accent-soft: #ffe3c1;
  --line: #d7e3db;
  --success: #2f8f4e;
  --warning: #c77700;
  --danger: #a42f2f;
  --shadow: 0 20px 40px rgba(10, 33, 24, 0.09);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Rubik", "Arial", sans-serif;
  background: radial-gradient(circle at top right, #d8efe3, #f4f9f4 42%);
  color: var(--ink);
}

a {
  color: var(--primary-strong);
}

.app-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 22px 20px 58px;
}

.loading {
  text-align: center;
  color: var(--ink-muted);
  padding: 42px 0;
}

.hero {
  background: var(--hero-gradient);
  border-radius: 28px;
  color: #f8fff8;
  padding: 30px;
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -40px -100px auto;
  width: 220px;
  height: 220px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 50%;
}

.hero-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  position: relative;
  z-index: 1;
}

.brand {
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  opacity: 0.9;
}

.install-btn,
.primary-btn,
.secondary-btn,
.action-btn,
.quiz-btn {
  border: none;
  border-radius: 999px;
  padding: 10px 16px;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
}

.city-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.city-link {
  text-decoration: none;
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
  background: rgba(255, 255, 255, 0.15);
}

.city-link.current {
  background: rgba(255, 255, 255, 0.32);
  color: #114336;
  border-color: rgba(255, 255, 255, 0.48);
  pointer-events: none;
}

.install-btn {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.install-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.hero h1 {
  margin: 18px 0 10px;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.05;
  position: relative;
  z-index: 1;
}

.hero p {
  margin: 0;
  max-width: 760px;
  color: rgba(247, 255, 250, 0.93);
  position: relative;
  z-index: 1;
}

.quick-stats {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 1fr));
  gap: 12px;
  position: relative;
  z-index: 1;
}

.stat-card {
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 14px;
  padding: 14px;
}

.stat-card .label {
  font-size: 12px;
  opacity: 0.9;
  margin-bottom: 4px;
}

.stat-card .value {
  font-size: 21px;
  font-weight: 700;
}

.nav-strip {
  margin: 18px 0 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.nav-strip a {
  text-decoration: none;
  color: var(--ink);
  background: #ffffffa6;
  border: 1px solid #fff;
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
}

.layout {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
}

.card {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 20px rgba(15, 30, 24, 0.06);
  padding: 22px;
}

.card h2,
.card h3 {
  margin-top: 0;
}

.card h2 {
  font-size: 24px;
  margin-bottom: 10px;
}

.card p {
  color: var(--ink-muted);
}

.field-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 12px 0;
}

.input,
.select {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 15px;
  font-family: inherit;
  min-width: 140px;
}

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

.secondary-btn {
  background: #fff;
  border: 1px solid var(--line);
  color: var(--ink);
}

.level-track {
  margin-top: 14px;
}

.progress-bar {
  width: 100%;
  background: #e4ece8;
  border-radius: 999px;
  height: 13px;
  overflow: hidden;
}

.progress {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  width: 0;
  transition: width 0.4s ease;
}

.level-labels {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-top: 8px;
  font-size: 12px;
  color: var(--ink-muted);
}

.actions-grid,
.badges-grid,
.course-grid,
.video-grid,
.rules-grid,
.challenge-grid,
.qa-grid,
.guide-grid {
  display: grid;
  gap: 12px;
}

.actions-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.action-btn {
  background: #f0f7f2;
  border: 1px solid #d7e6dd;
  text-align: left;
  color: var(--ink);
}

.action-btn small {
  display: block;
  font-size: 12px;
  color: var(--ink-muted);
  margin-top: 5px;
}

.badges-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.badge {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fcfefc;
}

.badge.locked {
  opacity: 0.55;
}

.badge .name {
  font-weight: 600;
}

.badge .meta {
  font-size: 12px;
  color: var(--ink-muted);
}

.course-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.course-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 14px;
  background: #fcfffd;
}

.course-card h3 {
  margin: 4px 0;
  font-size: 18px;
}

.tag {
  display: inline-block;
  border-radius: 999px;
  padding: 3px 9px;
  background: #e9f4ee;
  color: var(--primary-strong);
  font-size: 12px;
  font-weight: 600;
}

.lesson-list {
  margin: 8px 0;
  padding-left: 18px;
  color: var(--ink-muted);
}

.lesson-list li {
  margin: 4px 0;
}

.quiz-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-bottom: 12px;
}

.quiz-card h3 {
  margin: 0 0 4px;
}

.question {
  border-top: 1px dashed #d9e4dc;
  padding-top: 10px;
  margin-top: 10px;
}

.options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.quiz-btn {
  background: #f4f8f5;
  border: 1px solid #d4e2d9;
}

.quiz-btn.correct {
  background: #e4f8e9;
  border-color: #8bc49a;
}

.quiz-btn.wrong {
  background: #fde9e9;
  border-color: #e3a6a6;
}

.feedback {
  margin-top: 6px;
  font-size: 14px;
}

.feedback.good {
  color: var(--success);
}

.feedback.bad {
  color: var(--danger);
}

.video-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.video-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 14px;
  background: linear-gradient(180deg, #fff, #f6fbf7);
}

.video-card h3 {
  margin-top: 0;
}

.video-meta {
  font-size: 13px;
  color: var(--ink-muted);
}

.video-link {
  display: inline-block;
  margin-top: 10px;
  font-weight: 600;
}

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

.rule-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 12px;
  background: #fcfffd;
}

.rule-item h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.guide-search {
  margin: 0 0 12px;
}

.guide-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.guide-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 14px;
  background: #fff;
}

.guide-card h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.steps {
  margin: 0;
  padding-left: 18px;
  color: var(--ink-muted);
}

.steps li {
  margin-bottom: 6px;
}

.plan-result {
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 14px;
  background: #f9fdf9;
}

.plan-result ul {
  margin: 0;
  padding-left: 18px;
}

.plan-result li {
  margin-bottom: 6px;
}

.challenge-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.challenge-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 12px;
  background: #fff;
}

.challenge-card h3 {
  margin: 0 0 6px;
  font-size: 17px;
}

.mini-progress {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: #e5ebe7;
  margin: 8px 0;
  overflow: hidden;
}

.mini-progress > span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--primary));
}

.leaderboard {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
  font-size: 14px;
}

.leaderboard th,
.leaderboard td {
  border-bottom: 1px solid var(--line);
  padding: 8px 6px;
  text-align: left;
}

.leaderboard tbody tr.me {
  background: #f3faf5;
  font-weight: 600;
}

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

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

.call-btn {
  width: 100%;
  text-align: center;
}

.call-meta {
  margin-top: 8px;
  font-size: 13px;
  color: var(--ink-muted);
}

.qa-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 12px;
}

.qa-item h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.certificate-card {
  background: linear-gradient(140deg, #fffdf6, #f5faf4);
  border: 1px solid #e4dfc8;
}

.certificate-preview {
  border: 2px dashed #d7c983;
  border-radius: var(--radius-md);
  padding: 14px;
  margin-top: 12px;
  background: #fffdf9;
}

.footer-note {
  margin-top: 20px;
  color: var(--ink-muted);
  font-size: 13px;
}

.reveal {
  animation: revealUp 0.5s ease;
}

@keyframes revealUp {
  from {
    transform: translateY(16px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@media (max-width: 1020px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .quick-stats {
    grid-template-columns: repeat(2, minmax(120px, 1fr));
  }
}

@media (max-width: 680px) {
  .app-shell {
    padding: 14px 12px 38px;
  }

  .hero {
    padding: 20px;
    border-radius: 22px;
  }

  .hero h1 {
    font-size: clamp(24px, 8vw, 34px);
  }

  .quick-stats {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 16px;
  }

  .field-row {
    flex-direction: column;
  }

  .input,
  .select,
  .primary-btn,
  .secondary-btn {
    width: 100%;
  }
}