:root {
  --quinn-blue: #153770;
  --quinn-navy: #0f2446;
  --quinn-gold: #f4b953;
  --quinn-gold-dark: #e6a23c;
  --quinn-coral: #e24a53;
  --quinn-cyan: #00add8;
  --quinn-text: #1e1e1e;
  --quinn-muted: #99a8c2;
  --quinn-light-bg: #f0f2f6;
  --quinn-white: #ffffff;
  --quinn-border: #cdd3df;
  --quinn-green: #16a34a;
  --quinn-green-light: #dcfce7;

  --header-h: 64px;
  --composer-min-h: 76px;

  --font-heading: "Poppins", system-ui, sans-serif;
  --font-body: "Roboto", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--quinn-light-bg);
  color: var(--quinn-text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ========== Header ========== */
.app-header {
  background: var(--quinn-navy);
  color: var(--quinn-white);
  padding: 12px 20px;
  padding-top: calc(12px + env(safe-area-inset-top, 0));
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 4px solid var(--quinn-gold);
  position: sticky;
  top: 0;
  z-index: 10;
}

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

.brand-logo {
  height: 36px;
  width: auto;
  display: block;
  flex-shrink: 0;
}

.brand-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.2px;
}

/* ========== Chat ========== */
.chat {
  flex: 1;
  overflow-y: auto;
  padding: 24px 20px 8px;
  max-width: 880px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.message {
  display: flex;
  max-width: 85%;
}

.message.user {
  align-self: flex-end;
}

.message.ai,
.message.welcome {
  align-self: flex-start;
}

.bubble {
  padding: 12px 16px;
  border-radius: 14px;
  background: var(--quinn-white);
  border: 1px solid var(--quinn-border);
  box-shadow: 0 1px 2px rgba(15, 36, 70, 0.04);
  font-size: 14.5px;
  line-height: 1.55;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}

.message.user .bubble {
  background: var(--quinn-blue);
  color: var(--quinn-white);
  border-color: var(--quinn-blue);
  border-bottom-right-radius: 4px;
}

.message.ai .bubble {
  border-bottom-left-radius: 4px;
}

.message.ai.error .bubble {
  background: #fff0f1;
  border-color: var(--quinn-coral);
  color: #7a1f24;
}

.bubble p {
  margin: 0 0 8px;
}

.bubble p:last-child {
  margin-bottom: 0;
}

.bubble .hint {
  font-size: 13px;
  color: var(--quinn-muted);
}

/* Markdown styling inside AI bubbles */
.bubble h1,
.bubble h2,
.bubble h3 {
  font-family: var(--font-heading);
  color: var(--quinn-blue);
  margin: 14px 0 8px;
  line-height: 1.25;
}

.bubble h1 {
  font-size: 18px;
  border-bottom: 2px solid var(--quinn-gold);
  padding-bottom: 4px;
}

.bubble h2 {
  font-size: 16px;
}

.bubble h3 {
  font-size: 14.5px;
}

.bubble ul,
.bubble ol {
  margin: 6px 0 8px;
  padding-left: 22px;
}

.bubble li {
  margin: 2px 0;
}

.bubble code {
  background: var(--quinn-light-bg);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 13px;
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  color: var(--quinn-navy);
}

.message.user .bubble code {
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
}

.bubble pre {
  background: var(--quinn-navy);
  color: #e6edf7;
  padding: 10px 12px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 12.5px;
  margin: 8px 0;
}

.bubble pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.bubble table {
  border-collapse: collapse;
  width: 100%;
  margin: 8px 0;
  font-size: 13.5px;
}

.bubble th,
.bubble td {
  border: 1px solid var(--quinn-border);
  padding: 6px 10px;
  text-align: left;
  vertical-align: top;
}

.bubble th {
  background: var(--quinn-light-bg);
  font-family: var(--font-heading);
  color: var(--quinn-blue);
  font-weight: 700;
}

.bubble strong {
  color: var(--quinn-blue);
}

.message.user .bubble strong {
  color: var(--quinn-gold);
}

.bubble a {
  color: var(--quinn-blue);
  text-decoration: underline;
}

.message.user .bubble a {
  color: var(--quinn-gold);
}

/* User message photos preview */
.user-photos {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.user-photos img {
  width: 80px;
  height: 80px;
  border-radius: 8px;
  object-fit: cover;
  border: 2px solid rgba(255, 255, 255, 0.4);
}

/* AI typing indicator */
.typing {
  display: inline-flex;
  gap: 4px;
  align-items: center;
  padding: 4px 0;
}

.typing span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--quinn-blue);
  opacity: 0.5;
  animation: blink 1.2s infinite ease-in-out both;
}

.typing span:nth-child(2) {
  animation-delay: 0.15s;
}

.typing span:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes blink {
  0%, 80%, 100% {
    opacity: 0.25;
    transform: translateY(0);
  }
  40% {
    opacity: 1;
    transform: translateY(-3px);
  }
}

/* ========== Composer ========== */
.composer {
  background: var(--quinn-white);
  border-top: 1px solid var(--quinn-border);
  padding: 12px 16px;
  padding-bottom: calc(12px + env(safe-area-inset-bottom, 0));
  position: sticky;
  bottom: 0;
}

.thumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 880px;
  margin: 0 auto 8px;
}

.thumbs:empty {
  display: none;
}

.thumb {
  position: relative;
  width: 64px;
  height: 64px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--quinn-border);
  background: var(--quinn-light-bg);
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.thumb-remove {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--quinn-coral);
  color: var(--quinn-white);
  border: none;
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

#composer-form {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 880px;
  margin: 0 auto;
}

.icon-btn {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: var(--quinn-light-bg);
  color: var(--quinn-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.15s, color 0.15s;
}

.icon-btn:hover {
  background: var(--quinn-blue);
  color: var(--quinn-white);
}

#text-input {
  flex: 1;
  height: 42px;
  border: 1px solid var(--quinn-border);
  border-radius: 8px;
  padding: 0 14px;
  font-family: var(--font-body);
  font-size: 14.5px;
  color: var(--quinn-text);
  background: var(--quinn-white);
  outline: none;
  transition: border-color 0.15s;
}

#text-input:focus {
  border-color: var(--quinn-blue);
}

.send-btn {
  height: 42px;
  padding: 0 18px;
  border: none;
  border-radius: 8px;
  background: var(--quinn-gold);
  color: var(--quinn-navy);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
  border-bottom: 3px solid var(--quinn-coral);
}

.send-btn:hover:not(:disabled) {
  background: var(--quinn-gold-dark);
}

.send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  border-bottom-color: var(--quinn-border);
}

.send-btn.loading .send-label::after {
  content: "…";
}

/* ========== Mobile ========== */
@media (max-width: 600px) {
  .brand-title {
    font-size: 14px;
  }

  .brand-logo {
    height: 30px;
  }

  .send-label {
    display: none;
  }

  .send-btn {
    padding: 0 12px;
  }

  .message {
    max-width: 95%;
  }

  .chat {
    padding: 16px 12px 8px;
  }

  .composer {
    padding: 10px 12px;
    padding-bottom: calc(10px + env(safe-area-inset-bottom, 0));
  }
}