@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
  --green: #1F7A63;
  --white: #FFFFFF;
  --grey: #F5F5F5;
  --yellow: #F5C518;
  --text-dark: #1A1A1A;
  --text-light: #FFFFFF;
  --text-muted: #6B7280;
  --border: #E8E8E8;
  --font-sans: "Plus Jakarta Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

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

html, body {
  font-family: var(--font-sans);
  font-size: 16px;
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Buttons */
.btn-primary {
  display: inline-block;
  background: var(--yellow);
  color: var(--text-dark);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 15px;
  padding: 14px 28px;
  border: none;
  border-radius: 0;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s;
  text-align: center;
}
.btn-primary:hover { background: #E0B315; }
.btn-primary:disabled { background: #ccc; cursor: not-allowed; color: #888; }

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--green);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 14px;
  padding: 10px 20px;
  border: 1.5px solid var(--green);
  border-radius: 0;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s, color 0.15s;
  text-align: center;
}
.btn-secondary:hover { background: var(--green); color: var(--white); }

/* Inputs */
.input {
  display: block;
  width: 100%;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: 0;
  padding: 14px 16px;
  font-family: var(--font-sans);
  font-size: 16px;
  color: var(--text-dark);
  transition: border-color 0.15s;
  outline: none;
}
.input:focus { border-color: var(--green); }
.input.error { border-color: #DC2626; }
textarea.input { resize: vertical; min-height: 120px; }

/* Cards */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 28px;
}

/* Day badge label */
.day-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--green);
}

/* Sidebar */
.sidebar {
  width: 240px;
  min-height: 100vh;
  background: var(--green);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar-logo {
  padding: 24px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}

.sidebar-logo .sk-mark {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 22px;
  color: var(--white);
  line-height: 1;
}

.sidebar-logo .challenge-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  margin-top: 4px;
}

.sidebar-name {
  padding: 12px 24px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--yellow);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-nav { flex: 1; padding: 8px 0; overflow-y: auto; }

.sidebar-day {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  text-decoration: none;
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.15s;
  border-left: 4px solid transparent;
  cursor: default;
}
.sidebar-day.completed { color: rgba(255,255,255,0.7); cursor: pointer; }
.sidebar-day.completed:hover { color: var(--white); }
.sidebar-day.current { color: var(--white); font-weight: 700; border-left-color: var(--yellow); }
.sidebar-day.locked { color: rgba(255,255,255,0.35); cursor: not-allowed; }

.sidebar-day .day-num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 16px 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.sidebar-footer a {
  display: block;
  color: rgba(255,255,255,0.6);
  font-size: 13px;
  text-decoration: none;
  padding: 4px 0;
  transition: color 0.15s;
}
.sidebar-footer a:hover { color: var(--white); }

/* Chat bubbles */
.bubble-agent {
  background: var(--green);
  color: var(--white);
  max-width: 75%;
  border-radius: 0 12px 12px 12px;
  padding: 12px 16px;
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 4px;
  white-space: pre-wrap;
}

.bubble-participant {
  background: var(--grey);
  color: var(--text-dark);
  max-width: 75%;
  border-radius: 12px 0 12px 12px;
  padding: 12px 16px;
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 4px;
  white-space: pre-wrap;
}

.msg-row { display: flex; margin-bottom: 16px; }
.msg-row.agent { justify-content: flex-start; }
.msg-row.participant { justify-content: flex-end; }

/* Typing indicator */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
  background: var(--green);
  border-radius: 0 12px 12px 12px;
  width: fit-content;
}
.typing-indicator span {
  width: 6px; height: 6px;
  background: rgba(255,255,255,0.7);
  border-radius: 50%;
  animation: bounce 1.2s infinite;
}
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }
@keyframes bounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-6px); }
}

/* Lesson content */
.lesson-body {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-dark);
}
.lesson-body h2 { font-size: 22px; font-weight: 700; margin: 32px 0 16px; }
.lesson-body h3 { font-size: 18px; font-weight: 600; margin: 24px 0 12px; }
.lesson-body p { margin-bottom: 20px; }
.lesson-body ul, .lesson-body ol { margin: 0 0 20px 24px; }
.lesson-body li { margin-bottom: 8px; }
.lesson-body strong { font-weight: 700; }
.lesson-body em { font-style: italic; }
.lesson-body blockquote {
  border-left: 4px solid var(--yellow);
  padding-left: 20px;
  margin: 24px 0;
  color: var(--text-muted);
  font-style: italic;
}
.lesson-body hr { border: none; border-top: 1px solid var(--border); margin: 32px 0; }

/* Dashboard layout */
.dashboard-layout {
  display: flex;
  min-height: 100vh;
}

.content-area {
  flex: 1;
  padding: 40px;
  max-width: 800px;
  overflow-y: auto;
}

/* Admin table */
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th { text-align: left; font-family: var(--font-mono); font-size: 11px; letter-spacing: 1px; text-transform: uppercase; color: var(--text-muted); padding: 12px 16px; border-bottom: 1px solid var(--border); }
.admin-table td { padding: 14px 16px; border-bottom: 1px solid var(--border); font-size: 14px; }
.admin-table tr.stuck { background: #FEF2F2; }
.admin-table tr:hover { background: var(--grey); cursor: pointer; }

/* Status dot */
.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 6px;
}
.status-dot.active { background: var(--yellow); }
.status-dot.completed { background: var(--green); }
.status-dot.stuck { background: #DC2626; }
.status-dot.locked { background: var(--border); }

/* Stat cards */
.stat-card { text-align: center; padding: 24px; }
.stat-card .stat-num { font-size: 36px; font-weight: 800; color: var(--green); font-family: var(--font-mono); }
.stat-card .stat-label { font-family: var(--font-mono); font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--text-muted); margin-top: 6px; }

/* Audience output card */
.audience-layer { border-top: 1px solid var(--border); padding-top: 20px; margin-top: 20px; }
.audience-layer:first-child { border-top: none; padding-top: 0; margin-top: 0; }
.interest-item { padding: 12px 0; border-bottom: 1px solid var(--border); }
.interest-item:last-child { border-bottom: none; }
.interest-name { font-weight: 700; }
.interest-search { font-family: var(--font-mono); font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.interest-reason { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* Copy variation card */
.variation-badge { font-family: var(--font-mono); font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 2px; color: var(--text-dark); margin-bottom: 12px; }
.variation-body { font-size: 16px; color: var(--text-dark); line-height: 1.7; margin: 16px 0; white-space: pre-wrap; }
.variation-block { background: var(--grey); padding: 16px; margin: 12px 0; font-size: 14px; }
.use-when { font-style: italic; color: var(--text-muted); margin-bottom: 16px; }

/* Mobile */
.hamburger-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--white);
  font-size: 20px;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 49;
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: -240px;
    top: 0;
    bottom: 0;
    z-index: 50;
    transition: left 0.2s;
    min-height: 100%;
  }
  .sidebar.open { left: 0; }
  .sidebar-overlay.open { display: block; }
  .hamburger-btn { display: block; }
  .content-area { padding: 20px; max-width: 100%; }
  .dashboard-layout { flex-direction: column; }
}