@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,300;1,400&family=Crimson+Pro:wght@300;400&display=swap');

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

:root {
  --bg-deep:       #08070e;
  --bg-mid:        #0e0c18;
  --glass-bg:      rgba(255, 255, 255, 0.035);
  --glass-border:  rgba(255, 255, 255, 0.07);
  --glass-hover:   rgba(255, 255, 255, 0.055);
  --gold:          #c9a84c;
  --gold-dim:      #7a6330;
  --gold-glow:     rgba(201, 168, 76, 0.12);
  --text:          #e8dfc8;
  --text-dim:      #7a7060;
  --text-mid:      #a89880;
  --user-left:     rgba(201, 168, 76, 0.35);
  --ease:          cubic-bezier(0.4, 0, 0.2, 1);
}

html, body {
  height: 100%;
  background: var(--bg-deep);
  color: var(--text);
  font-family: 'Crimson Pro', Georgia, serif;
  font-size: 18px;
  line-height: 1.75;
  overflow: hidden;
}

/* Ambient background layers */
body::before,
body::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  filter: blur(80px);
  opacity: 0.18;
}

body::before {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #3d1f6e 0%, transparent 70%);
  top: -200px;
  right: -100px;
  animation: drift1 18s ease-in-out infinite alternate;
}

body::after {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #6b3a0f 0%, transparent 70%);
  bottom: -150px;
  left: -100px;
  animation: drift2 22s ease-in-out infinite alternate;
}

/* Grain overlay */
.grain {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Main layout */
.app {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: 780px;
  margin: 0 auto;
  animation: appFadeIn 0.8s var(--ease) both;
}

/* Header */
header {
  padding: 24px 36px;
  display: flex;
  align-items: baseline;
  gap: 14px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  flex-shrink: 0;
}

.logo {
  font-family: 'Cormorant Garamond', serif;
  font-size: 24px;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.logo-sub {
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.14em;
  font-style: italic;
}

/* Messages */
.messages {
  flex: 1;
  overflow-y: auto;
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  scrollbar-width: thin;
  scrollbar-color: var(--glass-border) transparent;
}

.messages::-webkit-scrollbar { width: 3px; }
.messages::-webkit-scrollbar-track { background: transparent; }
.messages::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 2px;
}

/* Welcome screen */
.welcome {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 24px;
  gap: 16px;
  animation: welcomeIn 1s var(--ease) both;
}

.welcome-symbol {
  font-size: 52px;
  color: var(--gold);
  opacity: 0.6;
  line-height: 1;
  animation: symbolFloat 4s ease-in-out infinite;
}

.welcome h2 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 30px;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--text);
  animation: welcomeIn 1s var(--ease) 0.1s both;
}

.welcome p {
  font-size: 16px;
  color: var(--text-mid);
  max-width: 400px;
  line-height: 1.85;
  animation: welcomeIn 1s var(--ease) 0.2s both;
}

.welcome-prompts {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
  width: 100%;
  max-width: 500px;
  animation: welcomeIn 1s var(--ease) 0.3s both;
}

.prompt-chip {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-dim);
  padding: 11px 18px;
  border-radius: 6px;
  font-family: 'Crimson Pro', serif;
  font-size: 15.5px;
  cursor: pointer;
  text-align: left;
  transition:
    background 0.25s var(--ease),
    border-color 0.25s var(--ease),
    color 0.25s var(--ease),
    transform 0.2s var(--ease),
    box-shadow 0.25s var(--ease);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  line-height: 1.45;
}

.prompt-chip:hover {
  background: var(--glass-hover);
  border-color: var(--gold-dim);
  color: var(--text);
  transform: translateX(4px);
  box-shadow: 0 0 20px var(--gold-glow);
}

/* Message bubbles */
.message {
  display: flex;
  flex-direction: column;
  gap: 5px;
  animation: messageIn 0.35s var(--ease) both;
}

.message-label {
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 0 6px;
}

.message.user .message-label {
  color: var(--gold-dim);
}

.message-content {
  padding: 16px 22px;
  border-radius: 8px;
  font-size: 17px;
  line-height: 1.8;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: box-shadow 0.3s var(--ease);
}

.message.user .message-content {
  background: rgba(201, 168, 76, 0.06);
  border: 1px solid rgba(201, 168, 76, 0.18);
  border-left: 2px solid var(--gold-dim);
  color: var(--text);
}

.message.ai .message-content {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text);
}

.message.ai .message-content:hover {
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.25);
}

/* Typing indicator */
.typing-wrap {
  display: flex;
  flex-direction: column;
  gap: 5px;
  animation: messageIn 0.35s var(--ease) both;
}

.typing {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 16px 22px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  width: fit-content;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.typing span {
  width: 5px;
  height: 5px;
  background: var(--gold-dim);
  border-radius: 50%;
  animation: typingPulse 1.3s ease-in-out infinite;
}
.typing span:nth-child(2) { animation-delay: 0.18s; }
.typing span:nth-child(3) { animation-delay: 0.36s; }

/* Input area */
.input-area {
  padding: 16px 36px 28px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--glass-border);
  flex-shrink: 0;
}

.input-wrap {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  padding: 13px 16px;
  transition:
    border-color 0.25s var(--ease),
    box-shadow 0.25s var(--ease),
    background 0.25s var(--ease);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.input-wrap:focus-within {
  border-color: var(--gold-dim);
  box-shadow: 0 0 0 1px var(--gold-dim), 0 0 24px var(--gold-glow);
  background: rgba(255, 255, 255, 0.055);
}

textarea {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: 'Crimson Pro', serif;
  font-size: 17px;
  line-height: 1.6;
  resize: none;
  min-height: 28px;
  max-height: 160px;
  overflow-y: auto;
  scrollbar-width: none;
}

textarea::-webkit-scrollbar { display: none; }
textarea::placeholder { color: var(--text-dim); }

.send-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--gold-dim);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  transition:
    color 0.2s var(--ease),
    transform 0.2s var(--ease);
}

.send-btn:hover:not(:disabled) {
  color: var(--gold);
  transform: translateX(2px);
}

.send-btn:disabled {
  color: rgba(255,255,255,0.1);
  cursor: default;
}

.input-hint {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 9px;
  text-align: center;
  letter-spacing: 0.05em;
  opacity: 0.7;
}

/* Keyframes */
@keyframes appFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes welcomeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes messageIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes symbolFloat {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

@keyframes typingPulse {
  0%, 80%, 100% { opacity: 0.25; transform: scale(0.75); }
  40%           { opacity: 1;    transform: scale(1.1); }
}

@keyframes drift1 {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(40px, 30px) scale(1.1); }
}

@keyframes drift2 {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(-30px, -40px) scale(1.08); }
}

/* Responsive */
@media (max-width: 600px) {
  header       { padding: 18px 20px; }
  .messages    { padding: 20px; gap: 18px; }
  .input-area  { padding: 14px 20px 22px; }
  .welcome     { padding: 28px 16px; }
  .welcome h2  { font-size: 24px; }
}