/* ===== Theme Variables ===== */
:root {
  --bg: #f3f6f4;
  --bg-warm: #eef2ef;
  --surface: #ffffff;
  --text: #2d3a33;
  --text-muted: #7a8a80;
  --text-secondary: #7a8a80;
  --primary-color: #2d3a33;
  --accent: #5f8f72;
  --accent-color: #5f8f72;
  --accent-light: #e4efe8;
  --accent-dark: #3d6b50;
  --accent-glow: rgba(95, 143, 114, 0.2);
  --border: #d4ddd8;
  --shadow: 0 2px 16px rgba(45, 58, 51, 0.06);
  --shadow-lg: 0 8px 32px rgba(45, 58, 51, 0.1);
  --radius: 16px;
  --radius-sm: 10px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans), sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== Progress Bar ===== */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), #7aab8e, var(--accent-dark));
  z-index: 1000;
  transition: width 0.6s var(--ease-out);
  border-radius: 0 2px 2px 0;
}

/* ===== Step Indicator ===== */
.step-indicator {
  position: fixed;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 14px;
  z-index: 100;
}

.step-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--border);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.35s ease;
  position: relative;
}

.step-dot.active {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.5);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.step-dot.completed {
  background: var(--accent-light);
  border-color: var(--accent);
}

.step-dot::before {
  content: attr(data-label);
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  white-space: nowrap;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-muted);
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

.step-dot:hover::before {
  opacity: 1;
}

/* ===== Layout ===== */
.container {
  max-width: 820px;
  margin: 0 auto;
  padding: 40px 24px 80px;
  display: flex;
  flex-direction: column;
  transition: padding-top 0.7s var(--ease-out);
}

/* ===== Section Wrapper ===== */
.section-wrap {
  display: none;
  margin-bottom: 28px;
}

.section-wrap.open {
  display: block;
}

/* ===== Section ===== */
.section {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 40px 48px 32px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  position: relative;
  transition: border-color 0.6s ease, box-shadow 0.6s ease;
}

/* New section highlight pulse */
.section.highlight {
  border-color: var(--accent);
  box-shadow: var(--shadow-lg), 0 0 0 4px var(--accent-glow);
}

/* Pulsing arrow indicator on new section */
.section.highlight::before {
  content: "▼";
  position: absolute;
  top: -28px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--accent);
  font-size: 1rem;
  animation: bounce-down 1s ease infinite;
}

@keyframes bounce-down {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
  50% { transform: translateX(-50%) translateY(6px); opacity: 0.6; }
}

/* ===== Bilingual Layout ===== */
.bilingual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  position: relative; /* contain the divider */
}

/* Vertical divider — scoped to .bilingual only */
.bilingual::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(
    to bottom,
    transparent,
    var(--border) 10%,
    var(--border) 90%,
    transparent
  );
  pointer-events: none;
}

.lang-block {
  position: relative;
}

.lang-block::before {
  content: attr(data-lang);
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  background: var(--accent-light);
  padding: 2px 10px;
  border-radius: 6px;
  margin-bottom: 14px;
}

/* ===== Markdown Content Styles ===== */
.lang-block h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
  line-height: 1.3;
}

.lang-block h2 {
  font-size: 1.35rem;
  font-weight: 650;
  margin-top: 20px;
  margin-bottom: 12px;
  color: var(--accent-dark);
}

.lang-block h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 18px;
  margin-bottom: 8px;
  color: var(--text);
}

.lang-block p {
  margin-bottom: 12px;
  color: var(--text);
}

.lang-block ul,
.lang-block ol {
  margin-bottom: 12px;
  padding-left: 22px;
}

.lang-block li {
  margin-bottom: 5px;
}

.lang-block code {
  font-family: var(--font-mono), monospace;
  background: var(--accent-light);
  padding: 2px 7px;
  border-radius: 5px;
  font-size: 0.88em;
  color: var(--accent-dark);
}

.lang-block pre {
  background: #1e2a23;
  color: #c8d6cc;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin-bottom: 16px;
  font-size: 0.86rem;
  line-height: 1.6;
}

.lang-block pre code {
  background: none;
  padding: 0;
  color: inherit;
}

.lang-block blockquote {
  border-left: 3px solid var(--accent);
  padding: 10px 16px;
  margin-bottom: 12px;
  background: var(--accent-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text);
  font-size: 0.95rem;
}

.lang-block table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 16px;
  font-size: 0.9rem;
}

.lang-block th,
.lang-block td {
  padding: 9px 14px;
  border: 1px solid var(--border);
  text-align: left;
}

.lang-block th {
  background: var(--bg-warm);
  font-weight: 600;
  color: var(--accent-dark);
}

.lang-block strong {
  font-weight: 600;
  color: var(--text);
}

/* ===== Mermaid ===== */
.mermaid {
  text-align: center;
  margin: 16px 0;
}

.mermaid svg {
  max-width: 100%;
}

/* ===== Shared Button Style ===== */
.btn {
  padding: 12px 28px;
  border-radius: 12px;
  border: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

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

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.16);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}

/* ===== Continue Button ===== */
.continue-btn {
  display: block;
  margin: 28px auto 0;
  padding: 12px 40px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: var(--font-sans), sans-serif;
  letter-spacing: 0.02em;
  position: relative;
  z-index: 1;
  text-align: center;
  text-decoration: none;
}

.continue-btn:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.continue-btn:active {
  transform: translateY(0);
}

.continue-btn.finish {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
}

.continue-btn.finish:hover {
  box-shadow: 0 6px 24px var(--accent-glow);
}

/* ===== Final Action Buttons ===== */
.onboarding-actions {
  margin-top: 28px;
}

.lang-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.onboarding-link-btn {
  min-height: 46px;
}

.onboarding-link-btn,
.server-address {
  min-width: min(100%, 280px);
}

/* ===== Server Address (theme overrides) ===== */
.section .server-address-group {
  margin: 0;
  align-items: flex-start;
  width: min(100%, 280px);
  max-width: 100%;
}

.section .server-address {
  background: var(--accent-light);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  width: 100%;
  justify-content: space-between;
  padding: 12px 16px;
}

.section .server-address:hover {
  background: #d6ebe0;
}

.section .server-address:focus-visible,
.onboarding-link-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.section .server-address-note {
  color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .bilingual {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .bilingual::after {
    display: none;
  }

  .lang-block + .lang-block {
    padding-top: 20px;
    border-top: 1px solid var(--border);
  }

  .lang-actions {
    width: 100%;
  }

  .section {
    padding: 28px 22px;
  }

  .container {
    padding: 20px 16px 80px;
  }

  .step-indicator {
    right: 12px;
  }

  .step-dot::before {
    display: none;
  }

  .lang-block h1 {
    font-size: 1.4rem;
  }

  .lang-block h2 {
    font-size: 1.2rem;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 22px 16px;
    border-radius: 12px;
  }

  .lang-block h1 {
    font-size: 1.25rem;
  }

  .continue-btn {
    width: 100%;
  }

  .onboarding-link-btn,
  .server-address {
    width: 100%;
    min-width: 0;
  }
}