/* ============================================================
   CSS-переменные: тёмная тема (default) + светлая
   ============================================================ */
:root {
  --bg-primary:     #0f1117;
  --bg-secondary:   #1a1d27;
  --bg-card:        #20232f;
  --bg-input:       #2a2d3a;
  --border:         #2f3347;
  --text-primary:   #e8eaf0;
  --text-secondary: #8b91a8;
  --text-muted:     #555c78;
  --accent:         #5b7cf6;
  --accent-hover:   #7090ff;
  --accent-dim:     rgba(91, 124, 246, 0.15);
  --success:        #3ecf8e;
  --warning:        #f5a623;
  --danger:         #e5534b;
  --shadow:         0 4px 24px rgba(0,0,0,.4);
  --radius:         12px;
  --radius-sm:      8px;
}

[data-theme="light"] {
  --bg-primary:     #f0f2f8;
  --bg-secondary:   #ffffff;
  --bg-card:        #ffffff;
  --bg-input:       #f4f5f9;
  --border:         #e2e5ef;
  --text-primary:   #1a1d27;
  --text-secondary: #555c78;
  --text-muted:     #9ba3bf;
  --accent:         #4a68e8;
  --accent-hover:   #3a58d8;
  --accent-dim:     rgba(74, 104, 232, 0.1);
  --shadow:         0 4px 24px rgba(0,0,0,.08);
}

/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background .2s, color .2s;
}

/* ============================================================
   Layout
   ============================================================ */
.app { display: flex; flex-direction: column; min-height: 100vh; }

header {
  position: sticky; top: 0; z-index: 100;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo { font-weight: 700; font-size: 1.1rem; letter-spacing: -.01em; }
.header-stats {
  font-size: .8rem; color: var(--text-muted);
  display: flex; gap: 12px;
}
.header-right { display: flex; gap: 10px; align-items: center; }

main { flex: 1; max-width: 900px; margin: 0 auto; width: 100%; padding: 24px 16px; }

/* ============================================================
   Screens
   ============================================================ */
.screen { display: none; }
.screen.active { display: block; }

/* ============================================================
   Auth screen
   ============================================================ */
.auth-wrap {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; min-height: 70vh; gap: 24px;
  text-align: center;
}
.auth-title { font-size: 2rem; font-weight: 700; }
.auth-sub { color: var(--text-secondary); max-width: 360px; }

/* ============================================================
   Onboarding / Consent
   ============================================================ */
.consent-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  max-width: 620px;
  margin: 0 auto;
}
.consent-box h2 { margin-bottom: 16px; }
.consent-section {
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin: 12px 0;
  font-size: .9rem;
  color: var(--text-secondary);
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid var(--border);
}
.consent-check {
  display: flex; align-items: flex-start; gap: 10px;
  margin: 16px 0; font-size: .92rem;
}
.consent-check input[type="checkbox"] {
  margin-top: 3px; width: 16px; height: 16px; flex-shrink: 0;
  accent-color: var(--accent);
}

/* Блок 7 — особые категории */
.warning-block {
  border: 1px solid var(--warning);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin: 16px 0;
  background: rgba(245, 166, 35, .08);
  font-size: .88rem;
  color: var(--text-primary);
}
.warning-block .w-icon { font-size: 1.4rem; margin-bottom: 8px; }

/* ============================================================
   Free chat widget (главный экран, над карточками)
   ============================================================ */
.free-chat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 28px;
  overflow: hidden;
  transition: box-shadow .2s;
}
.free-chat:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

/* Область сообщений — скрыта пока пустая, разворачивается плавно */
.free-chat-messages {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
  padding: 0 16px;
}
.free-chat-messages.has-messages {
  max-height: 340px;
  overflow-y: auto;
  padding: 16px;
}
.free-chat-messages .msg {
  max-width: 88%;
  margin-bottom: 10px;
}

/* Разделитель появляется когда есть сообщения */
.free-chat-divider {
  display: none;
  height: 1px;
  background: var(--border);
  margin: 0;
}
.free-chat-messages.has-messages + .free-chat-divider {
  display: block;
}

/* Поле ввода */
.free-chat-input-wrap {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  padding: 14px 16px;
}
.free-chat-input-wrap textarea {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font: inherit;
  font-size: .95rem;
  resize: none;
  min-height: 24px;
  max-height: 120px;
  line-height: 1.5;
}
.free-chat-input-wrap textarea::placeholder {
  color: var(--text-muted);
}
.free-chat-send {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background .15s, transform .1s;
}
.free-chat-send:hover { background: var(--accent-hover); }
.free-chat-send:active { transform: scale(.92); }
.free-chat-send:disabled { opacity: .45; cursor: default; }

/* Секция-разделитель перед карточками */
.section-label {
  font-size: .8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 12px;
}

/* ============================================================
   Home screen — cards
   ============================================================ */
.mode-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 16px;
  margin-top: 24px;
}
.mode-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  cursor: pointer;
  transition: border-color .15s, box-shadow .15s, transform .1s;
}
.mode-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.mode-card .icon { font-size: 2rem; margin-bottom: 10px; }
.mode-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; }
.mode-card p { font-size: .85rem; color: var(--text-secondary); }
.mode-card .badge {
  display: inline-block;
  font-size: .72rem;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 20px;
  padding: 2px 10px;
  margin-top: 12px;
}

/* ============================================================
   Chat (Appeals mode)
   ============================================================ */
.chat-screen { display: flex; flex-direction: column; height: calc(100vh - 80px); }
.chat-header {
  display: flex; align-items: center; gap: 12px;
  padding-bottom: 16px; border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}
.back-btn {
  background: none; border: none; color: var(--text-secondary);
  cursor: pointer; font-size: 1.2rem; padding: 4px;
}
.back-btn:hover { color: var(--text-primary); }

.messages {
  flex: 1; overflow-y: auto; display: flex;
  flex-direction: column; gap: 12px;
  padding: 8px 0;
}
.msg {
  max-width: 80%;
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: .92rem;
  line-height: 1.55;
  white-space: pre-wrap;
}
.msg.user {
  align-self: flex-end;
  background: var(--accent);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.msg.assistant {
  align-self: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}
.msg.thinking {
  align-self: flex-start;
  color: var(--text-muted);
  font-style: italic;
  background: none;
  padding: 4px 0;
}

.chat-input-wrap {
  padding-top: 12px;
  border-top: 1px solid var(--border);
  display: flex; gap: 10px; align-items: flex-end;
}
.chat-input-wrap textarea {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  color: var(--text-primary);
  font: inherit;
  resize: none;
  max-height: 160px;
  min-height: 48px;
  outline: none;
  transition: border-color .15s;
}
.chat-input-wrap textarea:focus { border-color: var(--accent); }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: none; cursor: pointer;
  font: inherit; font-weight: 600; font-size: .9rem;
  transition: background .15s, opacity .15s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled { opacity: .5; cursor: default; }
.btn-ghost {
  background: var(--bg-input);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-ghost:hover { color: var(--text-primary); border-color: var(--accent); }
.btn-icon {
  width: 44px; height: 44px; padding: 0;
  background: var(--accent); color: #fff;
  border-radius: var(--radius-sm); border: none;
  cursor: pointer; font-size: 1.1rem;
  flex-shrink: 0;
  transition: background .15s;
}
.btn-icon:hover { background: var(--accent-hover); }
.btn-icon:disabled { opacity: .5; cursor: default; }

/* Theme toggle */
#theme-toggle { background: none; border: none; cursor: pointer; font-size: 1.2rem; }