:root {
  --bg-deep: #0b1526;
  --bg-card: #13223b;
  --bg-card-hover: #192d4d;
  --bg-elevated: #1b3154;
  --border-subtle: rgba(120, 175, 245, 0.22);
  --green: #70c557;
  --green-dark: #4ea337;
  --gold: #ffd740;
  --orange: #ff9f1c;
  --blue: #4da6e8;
  --purple: #b26bc7;
  --cyan: #00e1ff;
  --red: #eb5757;
  --text-main: #f4f8ff;
  --text-muted: #abc0df;
  --radius-lg: 20px;
  --radius-md: 14px;
  --shadow-card: 0 14px 36px rgba(4, 10, 22, 0.55);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: radial-gradient(circle at 20% 0%, #173058 0%, #0b1526 55%, #070e1a 100%);
  color: var(--text-main);
  line-height: 1.55;
  min-height: 100vh;
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* TOP NAVBAR */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 21, 38, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 2px solid rgba(112, 197, 87, 0.35);
  padding: 12px 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
}

.brand-logo {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid var(--green);
  object-fit: cover;
}

.brand-title {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  display: block;
}

.brand-sub {
  font-size: 0.76rem;
  color: var(--gold);
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.94rem;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--gold);
}

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

.lang-switch {
  display: inline-flex;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  padding: 3px;
}

.lang-btn {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.84rem;
  padding: 6px 13px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s;
}

.lang-btn.active {
  background: var(--green);
  color: #0b1526;
}

.xp-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 215, 64, 0.14);
  border: 1.5px solid var(--gold);
  color: var(--gold);
  padding: 6px 13px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.85rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 800;
  font-size: 0.94rem;
  padding: 11px 20px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-green {
  background: linear-gradient(135deg, #7ed964 0%, #52b03a 100%);
  color: #091423;
  box-shadow: 0 6px 20px rgba(112, 197, 87, 0.35);
}

.btn-orange {
  background: linear-gradient(135deg, #ffb340 0%, #ff8c00 100%);
  color: #0b1526;
  box-shadow: 0 6px 20px rgba(255, 159, 28, 0.35);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1.5px solid var(--border-subtle);
}

.btn-outline:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* HERO SECTION */
.hero {
  padding: 44px 0 36px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 32px;
  align-items: center;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(112, 197, 87, 0.18);
  border: 1.5px solid var(--green);
  color: #98f07e;
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: 2.75rem;
  line-height: 1.12;
  font-weight: 900;
  letter-spacing: -0.025em;
  margin-bottom: 16px;
}

.hero h1 .highlight {
  color: var(--gold);
}

.hero p.lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 22px;
}

.pillar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.pillar-tag {
  font-size: 0.78rem;
  font-weight: 800;
  padding: 5px 12px;
  border-radius: 999px;
  color: #0b1526;
}

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.channel-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.86rem;
  color: var(--text-muted);
}

.channel-links a {
  color: var(--blue);
  font-weight: 700;
  text-decoration: none;
}

.channel-links a:hover {
  text-decoration: underline;
}

/* HERO RIGHT CARD (QUICK LEAD CAPTURE & ACCOUNT SIGNUP) */
.signup-card {
  background: linear-gradient(165deg, #162947 0%, #101e36 100%);
  border: 2px solid var(--green);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-card);
  position: relative;
}

.signup-card h2 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.signup-card .sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.form-group {
  margin-bottom: 12px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 4px;
}

.form-input, .form-select {
  width: 100%;
  padding: 10px 13px;
  border-radius: 10px;
  border: 1.5px solid var(--border-subtle);
  background: rgba(9, 17, 32, 0.85);
  color: var(--text-main);
  font-size: 0.92rem;
  font-family: inherit;
}

.form-input:focus, .form-select:focus {
  outline: none;
  border-color: var(--green);
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.role-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 12px;
}

.role-chip {
  background: rgba(255, 255, 255, 0.05);
  border: 1.5px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 8px 6px;
  border-radius: 10px;
  font-size: 0.78rem;
  font-weight: 700;
  text-align: center;
  cursor: pointer;
  transition: all 0.15s;
}

.role-chip.active {
  background: rgba(112, 197, 87, 0.22);
  border-color: var(--green);
  color: #fff;
}

.privacy-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 10px;
  text-align: center;
}

/* SECTION HEADINGS */
.section {
  padding: 42px 0;
  border-top: 1px solid rgba(120, 175, 245, 0.12);
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 26px;
  flex-wrap: wrap;
}

.section-header h2 {
  font-size: 1.85rem;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.section-header p {
  color: var(--text-muted);
  font-size: 0.98rem;
}

/* EPISODE 1 FEATURED HUB + WORKSHEET CARD */
.ep1-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
}

.video-card, .worksheet-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-card);
}

.video-thumb-wrap {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  border: 2px solid var(--gold);
  margin-bottom: 16px;
  background: #060c17;
}

.video-thumb-wrap img {
  width: 100%;
  display: block;
}

.formula-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 14px 0;
}

.formula-pill {
  background: rgba(255, 159, 28, 0.15);
  border: 1.5px solid var(--orange);
  color: var(--gold);
  padding: 6px 13px;
  border-radius: 10px;
  font-weight: 800;
  font-size: 0.85rem;
}

.worksheet-preview-box {
  display: grid;
  grid-template-columns: 155px 1fr;
  gap: 16px;
  align-items: center;
  background: rgba(9, 17, 32, 0.65);
  border: 1.5px solid var(--border-subtle);
  border-radius: 14px;
  padding: 14px;
  margin: 14px 0 18px;
}

.worksheet-preview-box img {
  width: 100%;
  border-radius: 8px;
  border: 2px solid var(--green);
  cursor: pointer;
  transition: transform 0.2s;
}

.worksheet-preview-box img:hover {
  transform: scale(1.03);
}

.checklist {
  list-style: none;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.checklist li {
  margin-bottom: 7px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.checklist li::before {
  content: "✔";
  color: var(--green);
  font-weight: 900;
}

/* INTERACTIVE CURIOQUIZ */
.quiz-container {
  background: linear-gradient(160deg, #142744 0%, #0e1c33 100%);
  border: 2px solid var(--blue);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
}

.quiz-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.quiz-progress {
  font-weight: 800;
  color: var(--gold);
  font-size: 0.95rem;
}

.quiz-question-card {
  background: rgba(9, 17, 32, 0.72);
  border: 1.5px solid var(--border-subtle);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 16px;
}

.quiz-question-card h3 {
  font-size: 1.12rem;
  margin-bottom: 14px;
}

.quiz-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.quiz-opt-btn {
  text-align: left;
  padding: 12px 15px;
  border-radius: 10px;
  border: 1.5px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  transition: all 0.15s;
}

.quiz-opt-btn:hover:not(:disabled) {
  border-color: var(--gold);
  background: rgba(255, 215, 64, 0.1);
}

.quiz-opt-btn.correct {
  background: rgba(112, 197, 87, 0.25);
  border-color: var(--green);
  color: #b4ff9e;
}

.quiz-opt-btn.wrong {
  background: rgba(235, 87, 87, 0.25);
  border-color: var(--red);
  color: #ffb8b8;
}

.quiz-feedback {
  margin-top: 12px;
  padding: 11px 14px;
  border-radius: 10px;
  font-size: 0.88rem;
  font-weight: 600;
  display: none;
}

.quiz-feedback.show {
  display: block;
}

/* UPCOMING EPISODES GRID */
.episodes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.ep-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.ep-card .ep-tag {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
  width: fit-content;
}

.ep-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.ep-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

/* CHARACTERS GRID */
.chars-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.char-card {
  background: var(--bg-card);
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px 14px;
  text-align: center;
  transition: transform 0.2s;
}

.char-card:hover {
  transform: translateY(-4px);
}

.char-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 10px;
  display: block;
  border: 3px solid var(--green);
}

.char-card h3 {
  font-size: 1.08rem;
  margin-bottom: 4px;
}

.char-role {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--gold);
  margin-bottom: 8px;
}

.char-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* REVIEWS & TOPIC VOTING */
.community-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.review-card, .vote-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.star-picker {
  display: inline-flex;
  gap: 6px;
  font-size: 1.55rem;
  cursor: pointer;
  user-select: none;
  margin-bottom: 10px;
}

.star-picker span {
  color: #4a5d7c;
  transition: color 0.15s;
}

.star-picker span.lit {
  color: var(--gold);
}

.review-list {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 330px;
  overflow-y: auto;
}

.review-item {
  background: rgba(9, 17, 32, 0.65);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 12px 14px;
}

.review-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.vote-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: rgba(9, 17, 32, 0.65);
  border: 1.5px solid var(--border-subtle);
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 10px;
}

.vote-btn {
  background: rgba(112, 197, 87, 0.16);
  border: 1.5px solid var(--green);
  color: var(--green);
  font-weight: 800;
  padding: 7px 14px;
  border-radius: 10px;
  cursor: pointer;
  white-space: nowrap;
}

.vote-btn.voted {
  background: var(--green);
  color: #0b1526;
}

/* FOOTER & CREATOR ADMIN DRAWER */
.footer {
  background: #070e1a;
  border-top: 2px solid rgba(112, 197, 87, 0.3);
  padding: 36px 0;
  margin-top: 40px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.admin-drawer {
  display: none;
  margin-top: 20px;
  background: #101e36;
  border: 2px solid var(--gold);
  border-radius: 16px;
  padding: 20px;
}

.admin-drawer.open {
  display: block;
}

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #142b4d;
  border: 2px solid var(--green);
  color: #fff;
  padding: 14px 20px;
  border-radius: 14px;
  font-weight: 700;
  box-shadow: 0 12px 32px rgba(0,0,0,0.6);
  z-index: 999;
  display: none;
}

.toast.show {
  display: block;
}

@media (max-width: 980px) {
  .hero-grid, .ep1-grid, .community-grid {
    grid-template-columns: 1fr;
  }
  .episodes-grid {
    grid-template-columns: 1fr 1fr;
  }
  .chars-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .quiz-options {
    grid-template-columns: 1fr;
  }
}