/* ============================================================
   Macarthur Marble & Granite — chat frontend styles
   Light theme update — matched to Macarthur quote request page
   palette (light grey ground, dark charcoal text).
   ============================================================ */
:root {
  --brand-bg:          #f5f5f5;  /* light grey ground, matches quote page */
  --brand-accent:      #CBA58F;  /* stone-rose, unchanged */
  --brand-accent-dk:   #9C7E6E;
  --brand-text:        #2c2c2c;  /* dark charcoal, matches form labels */
  --brand-muted:       #767676;  /* muted grey, matches "Quote Request Form" heading tone */
  --brand-surface:     #e8e8e8;  /* input/chip fill, matches form input fields */
  --brand-border:      #c9c9c9;
  --brand-bubble-ai:   #ececec;
  --brand-bubble-user: #e3ded7;
  --on-accent:         #2c2c2c;  /* dark text for use on accent-coloured buttons */
}

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

html, body {
  height: 100%;
  background: var(--brand-bg);
  color: var(--brand-text);
  font-family: 'Barlow', sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.page {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  max-width: 680px;
  margin: 0 auto;
  background: var(--brand-bg);
}

/* --- Header --- */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 20px 28px;
  gap: 16px;
}

.brand .logo {
  display: block;
  width: auto;
  height: auto;
  /* Wide rectangle — constrain by height so it never dominates the header;
     max-width is just an overflow guard on very narrow screens. */
  max-height: 64px;
  max-width: 100%;
}

.brand .tagline {
  font-size: 12px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--brand-muted);
  margin-top: 2px;
}

.btn-secondary {
  flex: none;
  background: transparent;
  color: var(--brand-accent-dk);
  border: 1px solid var(--brand-border);
  border-radius: 999px;
  padding: 7px 14px;
  font-family: 'Barlow', sans-serif;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.btn-secondary:hover {
  border-color: var(--brand-accent);
  color: var(--brand-text);
}

/* --- Pulse line (signature element) --- */
.pulse-line {
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--brand-accent-dk) 30%, var(--brand-accent) 70%, transparent 100%);
  opacity: 0.6;
}

/* --- Main / messages --- */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: 16px 16px 20px;
}

#messages {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 8px 4px 16px;
}

.msg {
  max-width: 85%;
  padding: 11px 14px;
  border-radius: 14px;
  white-space: pre-wrap;
  word-wrap: break-word;
  font-size: 15px;
}

.msg-user {
  align-self: flex-end;
  background: var(--brand-bubble-user);
  border: 1px solid var(--brand-border);
  color: var(--brand-text);
  border-bottom-right-radius: 4px;
}

.msg-assistant {
  align-self: flex-start;
  background: var(--brand-bubble-ai);
  border: 1px solid var(--brand-border);
  color: var(--brand-text);
  border-bottom-left-radius: 4px;
}

.msg-status {
  align-self: center;
  background: transparent;
  color: var(--brand-muted);
  font-size: 13px;
  padding: 4px 8px;
}

.msg-error {
  border-color: #c97b7b;
  color: #8a2f2f;
}

/* Clickable links inside bot messages (post-stream linkify) */
.msg-assistant a {
  color: var(--brand-accent-dk);
  text-decoration: underline;
  text-underline-offset: 2px;
  word-break: break-all;
}
.msg-assistant a:hover { color: var(--brand-text); }

/* Bullet lists rendered from "- " markdown in bot replies */
.msg-assistant ul { margin: 4px 0; padding-left: 20px; }

/* --- Welcome / empty state --- */
.welcome {
  align-self: stretch;
  max-width: 100%;
  padding: 24px 6px 8px 0;
}
.welcome-title {
  font-family: 'Barlow Condensed', 'Barlow', sans-serif;
  font-weight: 600;
  font-size: 21px;
  line-height: 1.2;
  color: var(--brand-text);
  margin-bottom: 10px;
}
.welcome-body,
.welcome-cta {
  font-size: 15px;
  color: var(--brand-text);
  margin-bottom: 12px;
}
.welcome-cta a {
  color: var(--brand-accent-dk);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--brand-accent-dk);
}
.welcome-cta a:hover { color: var(--brand-text); border-color: var(--brand-text); }
.welcome-prompt {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--brand-muted);
  margin: 18px 0 10px;
}
.chips {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
}
.chip {
  background: var(--brand-surface);
  color: var(--brand-text);
  border: 1px solid var(--brand-border);
  border-radius: 999px;
  padding: 9px 15px;
  font-family: 'Barlow', sans-serif;
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.chip:hover {
  border-color: var(--brand-accent);
  background: var(--brand-bubble-user);
}

/* --- Input form --- */
#chat-form {
  display: flex;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--brand-border);
}

#input {
  flex: 1;
  background: var(--brand-surface);
  border: 1px solid var(--brand-border);
  border-radius: 999px;
  padding: 12px 16px;
  color: var(--brand-text);
  font-family: 'Barlow', sans-serif;
  font-size: 15px;
  outline: none;
  transition: border-color 0.15s ease;
}
#input:focus { border-color: var(--brand-accent); }
#input::placeholder { color: var(--brand-muted); }
#input:disabled { opacity: 0.5; }

#send {
  flex: none;
  background: var(--brand-accent);
  color: var(--on-accent);
  border: none;
  border-radius: 999px;
  padding: 12px 22px;
  font-family: 'Barlow', sans-serif;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: background 0.15s ease;
}
#send:hover:not(:disabled) { background: var(--brand-accent-dk); }
#send:disabled { opacity: 0.5; cursor: default; }

/* --- Mobile --- */
@media (max-width: 480px) {
  .brand .logo { max-height: 48px; }
  .msg { max-width: 90%; }
}