/* ═══════════════════════════════════════════════════════════════
   MDS Interview Agent — Styles
   ═══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --primary: #26738a;
  --primary-dark: #1f5f73;
  --primary-light: #4a9bb0;
  --content-bg: #f0f2f5;
  --text-dark: #1a1a2e;
  --text-muted: #6c757d;
  --border-color: #e9ecef;
  --white: #ffffff;
  --success: #28a745;
  --warning: #f59e0b;
  --error: #dc3545;
  --info: #17a2b8;
  --info-bg: #e7f5f8;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.1);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.12);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--content-bg);
  color: var(--text-dark);
  font-size: 14px;
  line-height: 1.5;
}

/* ── Landing Page ── */

.landing {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a3c5e 0%, var(--primary) 50%, var(--primary-light) 100%);
  color: var(--white);
  text-align: center;
  padding: 40px 20px;
}

.landing-logo {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  opacity: 0.7;
  margin-bottom: 24px;
}

.landing h1 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 12px;
}

.landing p {
  font-size: 16px;
  opacity: 0.85;
  max-width: 600px;
  margin-bottom: 32px;
}

.landing-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: var(--white);
  color: var(--primary);
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  font-family: var(--font);
}

.landing-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.landing-features {
  display: flex;
  gap: 32px;
  margin-top: 48px;
  max-width: 800px;
}

.landing-feature {
  flex: 1;
  padding: 20px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(4px);
}

.landing-feature h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
}

.landing-feature p {
  font-size: 12px;
  opacity: 0.75;
  margin-bottom: 0;
}

/* ── App Layout ── */

.app { display: none; height: 100vh; flex-direction: column; }
.app.active { display: flex; }

/* ── Header ── */

.app-header {
  height: 56px;
  background: var(--white);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 16px;
  flex-shrink: 0;
}

.app-header-logo {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
}

.app-header-title {
  font-size: 13px;
  color: var(--text-muted);
}

.back-btn {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
  color: var(--text-muted);
  font-family: var(--font);
  margin-left: auto;
}

.back-btn:hover { border-color: var(--primary); color: var(--primary); }

/* ── Persona Tabs ── */

.persona-tabs {
  display: flex;
  background: var(--white);
  border-bottom: 1px solid var(--border-color);
  padding: 0 20px;
  flex-shrink: 0;
}

.persona-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border: none;
  background: none;
  cursor: pointer;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 3px solid transparent;
  transition: all 0.2s;
}

.persona-tab:hover { color: var(--text-dark); }
.persona-tab.active { color: var(--text-dark); border-bottom-color: var(--primary); }

.persona-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  color: var(--white);
}

.persona-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.persona-meta small {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 400;
}

/* ── Split Layout ── */

.split-layout {
  display: grid;
  grid-template-columns: 2fr 3fr;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

/* ── Form Panel (Left) ── */

.form-panel {
  overflow-y: auto;
  padding: 20px;
  background: var(--content-bg);
}

.form-section {
  background: var(--white);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.form-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--info-bg);
  cursor: pointer;
  user-select: none;
}

.form-section-header:hover { background: #d4edf2; }

.form-section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-section-progress {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--text-muted);
}

.progress-bar {
  width: 80px;
  height: 4px;
  background: var(--border-color);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.5s ease;
}

.form-section-body {
  padding: 12px 16px;
  display: none;
}

.form-section.open .form-section-body { display: block; }

.form-field {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-color);
  transition: background 0.5s;
}

.form-field:last-child { border-bottom: none; }

.form-field-label {
  font-size: 12px;
  color: var(--text-muted);
  flex: 0 0 45%;
}

.form-field-value {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-dark);
  text-align: right;
  flex: 1;
}

.form-field-value.empty {
  color: var(--text-muted);
  font-weight: 400;
  font-style: italic;
}

.form-field-value.gap {
  color: var(--warning);
  font-weight: 500;
}

.form-field.highlight {
  background: rgba(38, 115, 138, 0.12);
  border-radius: var(--radius-sm);
  margin: 0 -8px;
  padding: 8px;
}

@keyframes fieldFill {
  0% { background: rgba(38, 115, 138, 0.2); }
  100% { background: transparent; }
}

.form-field.just-filled {
  animation: fieldFill 1.5s ease-out;
}

/* ── Chat Sidebar (Right) ── */

.chat-sidebar {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border-left: 1px solid var(--border-color);
  min-height: 0;
}

.chat-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.chat-agent-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.chat-agent-info {
  display: flex;
  flex-direction: column;
}

.chat-agent-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dark);
}

.chat-agent-status {
  font-size: 11px;
  color: var(--success);
}

.chat-messages {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.chat-msg {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 13px;
  line-height: 1.5;
  animation: msgIn 0.3s ease-out;
}

@keyframes msgIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.chat-msg.agent {
  align-self: flex-start;
  background: var(--info-bg);
  color: var(--text-dark);
  border-bottom-left-radius: 4px;
}

.chat-msg.user {
  align-self: flex-end;
  background: var(--primary);
  color: var(--white);
  border-bottom-right-radius: 4px;
}

.chat-msg strong { font-weight: 600; }

.typing-indicator {
  align-self: flex-start;
  display: flex;
  gap: 4px;
  padding: 12px 16px;
  background: var(--info-bg);
  border-radius: 16px;
  border-bottom-left-radius: 4px;
}

.typing-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary-light);
  animation: typingBounce 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) { animation-delay: 0s; }
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

/* ── Chat Controls ── */

.chat-controls {
  padding: 12px 16px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  background: var(--content-bg);
}

.chat-btn {
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--white);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font);
  transition: all 0.15s;
}

.chat-btn:hover { border-color: var(--primary); color: var(--primary); }

.chat-btn.primary {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.chat-btn.primary:hover { background: var(--primary-dark); }

.chat-progress {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-muted);
}

/* ── Data Overview ── */

.data-overview {
  display: none;
  background: var(--white);
  border-top: 1px solid var(--border-color);
  max-height: 300px;
  overflow-y: auto;
}

.data-overview.active { display: block; }

.data-overview-header {
  padding: 10px 16px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dark);
  background: var(--content-bg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.data-json {
  padding: 16px;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 11px;
  white-space: pre-wrap;
  color: var(--text-dark);
  line-height: 1.6;
}

.data-json .key { color: var(--primary); }
.data-json .string { color: var(--success); }
.data-json .null { color: var(--text-muted); }
.data-json .number { color: var(--warning); }

/* ── Persona Info Card ── */

.persona-info {
  padding: 12px 16px;
  background: var(--content-bg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.persona-info-text {
  flex: 1;
}

.persona-info-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dark);
}

.persona-info-desc {
  font-size: 11px;
  color: var(--text-muted);
}

.completeness-badge {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  color: var(--white);
}

/* ── Hidden ── */
.hidden { display: none; }

/* ── Responsive ── */
@media (max-width: 900px) {
  .split-layout { grid-template-columns: 1fr; }
  .form-panel { display: none; }
  .landing-features { flex-direction: column; }
}