/* ============================================
   CHROMABOT — COLOUR PREDICTION AI
   Palette: Acid Neon + Dark Space
   Fonts: Syne + Space Mono
   ============================================ */

:root {
  --acid:       #CCFF00;
  --neon-pink:  #FF3CAC;
  --deep:       #0D0D0D;
  --space:      #1A1A2E;
  --surface:    #111122;
  --surface2:   #1C1C35;
  --border:     rgba(204, 255, 0, 0.15);
  --border-hot: rgba(255, 60, 172, 0.3);
  --text-main:  #E8E4FF;
  --text-dim:   #7A7A9A;
  --text-hot:   #CCFF00;
  --radius:     4px;
  --radius-lg:  12px;
  --font-display: 'Syne', sans-serif;
  --font-mono:    'Space Mono', monospace;
  --transition:   0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--deep);
  color: var(--text-main);
  font-family: var(--font-mono);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ── Background ── */
.bg-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(204,255,0,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(204,255,0,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}
.bg-noise {
  position: fixed; inset: 0; z-index: 0; 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='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ── Header ── */
.site-header {
  position: relative; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 2rem;
  border-bottom: 1px solid var(--border);
  background: rgba(13,13,13,0.8);
  backdrop-filter: blur(12px);
}
.logo {
  display: flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.4rem; font-weight: 800; letter-spacing: -0.02em;
  color: var(--acid);
}
.logo-icon { font-size: 1.6rem; animation: spin-slow 8s linear infinite; display: inline-block; }
.logo em { color: var(--neon-pink); font-style: normal; }
.header-tag {
  font-size: 0.65rem; letter-spacing: 0.15em;
  color: var(--text-dim); font-family: var(--font-mono);
}

/* ── Layout ── */
.app-layout {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 320px 1fr 320px;
  gap: 0;
  min-height: calc(100vh - 60px - 44px);
}

/* ── Panels ── */
.panel {
  padding: 1.75rem 1.5rem;
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 1.5rem;
  position: relative;
}
.panel:last-child { border-right: none; }
.panel-label {
  font-size: 0.6rem; letter-spacing: 0.2em;
  color: var(--text-dim); font-family: var(--font-mono);
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

/* ── Orb ── */
.orb-container {
  position: relative; width: 160px; height: 160px;
  margin: 0 auto;
  display: flex; align-items: center; justify-content: center;
}
.orb-ring {
  position: absolute; border-radius: 50%;
  border: 1px solid rgba(204,255,0,0.2);
  animation: pulse-ring 3s ease-in-out infinite;
}
.orb-ring--outer { width: 160px; height: 160px; animation-delay: 0s; }
.orb-ring--mid   { width: 120px; height: 120px; animation-delay: 0.5s; }

.orb {
  width: 90px; height: 90px; border-radius: 50%;
  position: relative; cursor: pointer;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.orb:hover { transform: scale(1.08); }
.orb-inner {
  width: 100%; height: 100%; border-radius: 50%;
  background: #CCFF00;
  transition: background 0.6s ease;
  box-shadow: 0 0 30px currentColor, 0 0 60px rgba(204,255,0,0.3);
}
.orb-glow {
  position: absolute; inset: -20px; border-radius: 50%;
  background: radial-gradient(circle, rgba(204,255,0,0.2) 0%, transparent 70%);
  transition: background 0.6s ease;
  pointer-events: none;
}

/* ── Colour Input ── */
.colour-input-group { display: flex; flex-direction: column; gap: 0.75rem; }
.input-label {
  font-size: 0.6rem; letter-spacing: 0.18em; color: var(--text-dim);
}
.picker-row { display: flex; gap: 0.75rem; align-items: center; }
.colour-picker {
  width: 48px; height: 48px; border: 2px solid var(--border);
  border-radius: var(--radius); cursor: pointer; background: none;
  padding: 2px; transition: border-color var(--transition);
}
.colour-picker:hover { border-color: var(--acid); }
.hex-input {
  flex: 1; background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 0.6rem 0.75rem;
  color: var(--acid); font-family: var(--font-mono); font-size: 0.9rem;
  letter-spacing: 0.1em; outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.hex-input:focus { border-color: var(--acid); box-shadow: 0 0 0 2px rgba(204,255,0,0.15); }

.rgb-row { display: flex; gap: 0.5rem; }
.rgb-field { display: flex; flex-direction: column; gap: 0.3rem; flex: 1; }
.rgb-field label { font-size: 0.55rem; letter-spacing: 0.15em; color: var(--text-dim); }
.rgb-field input {
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 0.4rem 0.5rem;
  color: var(--text-main); font-family: var(--font-mono); font-size: 0.8rem;
  text-align: center; outline: none; width: 100%;
  transition: border-color var(--transition);
}
.rgb-field input:focus { border-color: var(--neon-pink); }

.colour-meta {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.7rem; color: var(--text-dim);
}
.meta-sep { color: var(--border); }

/* ── Predict Button ── */
.predict-btn {
  display: flex; align-items: center; justify-content: center; gap: 0.75rem;
  background: var(--acid); color: var(--deep);
  border: none; border-radius: var(--radius);
  padding: 0.9rem 1.5rem; cursor: pointer;
  font-family: var(--font-display); font-size: 0.9rem; font-weight: 800;
  letter-spacing: 0.1em;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  position: relative; overflow: hidden;
}
.predict-btn::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.2) 50%, transparent 60%);
  transform: translateX(-100%); transition: transform 0.5s ease;
}
.predict-btn:hover::before { transform: translateX(100%); }
.predict-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(204,255,0,0.4);
}
.predict-btn:active { transform: translateY(0); }
.predict-btn.loading { background: var(--neon-pink); pointer-events: none; }
.btn-icon { font-size: 1.1rem; transition: transform var(--transition); }
.predict-btn:hover .btn-icon { transform: translateX(4px); }

/* ── Quick Swatches ── */
.quick-colours { display: flex; flex-direction: column; gap: 0.6rem; }
.quick-label { font-size: 0.6rem; letter-spacing: 0.18em; color: var(--text-dim); }
.quick-swatches { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.swatch {
  width: 32px; height: 32px; border-radius: 50%;
  border: 2px solid transparent; cursor: pointer;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.swatch:hover {
  transform: scale(1.2);
  border-color: rgba(255,255,255,0.5);
  box-shadow: 0 0 12px rgba(255,255,255,0.3);
}
.swatch.active { border-color: white; transform: scale(1.15); }

/* ── Chat Panel ── */
.panel-chat {
  background: var(--surface);
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
}
.chat-window {
  flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 1rem;
  padding-right: 0.25rem; min-height: 0;
  scrollbar-width: thin; scrollbar-color: var(--border) transparent;
}
.chat-window::-webkit-scrollbar { width: 4px; }
.chat-window::-webkit-scrollbar-track { background: transparent; }
.chat-window::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.chat-message { display: flex; gap: 0.75rem; align-items: flex-start; }
.bot-message { flex-direction: row; }
.user-message { flex-direction: row-reverse; }

.bot-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--surface2); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; color: var(--acid); flex-shrink: 0;
  animation: avatar-glow 3s ease-in-out infinite;
}
.message-bubble {
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 0 var(--radius-lg) var(--radius-lg) var(--radius-lg);
  padding: 0.85rem 1rem; max-width: 85%;
  font-size: 0.82rem; line-height: 1.6; color: var(--text-main);
}
.user-message .message-bubble {
  background: rgba(204,255,0,0.08);
  border-color: rgba(204,255,0,0.2);
  border-radius: var(--radius-lg) 0 var(--radius-lg) var(--radius-lg);
  color: var(--acid);
}
.message-bubble p + p { margin-top: 0.5rem; }
.message-bubble strong { color: var(--acid); }

.typing-indicator {
  display: flex; gap: 4px; align-items: center; padding: 0.5rem 0;
}
.typing-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--acid); opacity: 0.4;
  animation: typing-bounce 1.2s ease-in-out infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

.chat-input-row {
  display: flex; gap: 0.5rem; align-items: center;
  border-top: 1px solid var(--border); padding-top: 1rem;
}
.chat-input {
  flex: 1; background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 0.65rem 0.9rem;
  color: var(--text-main); font-family: var(--font-mono); font-size: 0.8rem;
  outline: none; transition: border-color var(--transition);
}
.chat-input:focus { border-color: var(--acid); }
.chat-input::placeholder { color: var(--text-dim); }
.chat-send-btn {
  width: 40px; height: 40px; border-radius: var(--radius);
  background: var(--acid); border: none; cursor: pointer; color: var(--deep);
  display: flex; align-items: center; justify-content: center;
  transition: transform var(--transition), box-shadow var(--transition);
  flex-shrink: 0;
}
.chat-send-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 16px rgba(204,255,0,0.4);
}

/* ── Results Panel ── */
.results-placeholder {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 1rem; padding: 2rem; text-align: center;
  color: var(--text-dim); font-size: 0.8rem; line-height: 1.6;
  border: 1px dashed var(--border); border-radius: var(--radius-lg);
  min-height: 200px;
}
.placeholder-icon { font-size: 2.5rem; opacity: 0.3; animation: spin-slow 10s linear infinite; }

.results-content { display: flex; flex-direction: column; gap: 1.25rem; }
.result-block {
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1rem;
  animation: slide-in 0.4s ease forwards;
}
.result-block-label {
  font-size: 0.58rem; letter-spacing: 0.18em; color: var(--text-dim);
  margin-bottom: 0.75rem;
}
.result-swatches-row { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.result-swatch {
  display: flex; flex-direction: column; align-items: center; gap: 0.3rem;
  cursor: pointer;
}
.result-swatch-color {
  width: 44px; height: 44px; border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.1);
  transition: transform var(--transition), box-shadow var(--transition);
}
.result-swatch:hover .result-swatch-color {
  transform: scale(1.1);
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
.result-swatch-hex {
  font-size: 0.6rem; color: var(--text-dim); font-family: var(--font-mono);
}

.mood-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.mood-tag {
  padding: 0.3rem 0.7rem; border-radius: 999px;
  font-size: 0.65rem; letter-spacing: 0.08em;
  border: 1px solid; font-family: var(--font-mono);
}

.trend-content { font-size: 0.78rem; line-height: 1.6; color: var(--text-main); }
.trend-score {
  display: flex; align-items: center; gap: 0.75rem; margin-top: 0.5rem;
}
.trend-bar-bg {
  flex: 1; height: 4px; background: var(--border); border-radius: 2px; overflow: hidden;
}
.trend-bar-fill {
  height: 100%; background: var(--acid); border-radius: 2px;
  transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
  width: 0%;
}
.trend-pct { font-size: 0.7rem; color: var(--acid); min-width: 36px; text-align: right; }

.contrast-demo {
  display: flex; gap: 0.5rem;
}
.contrast-sample {
  flex: 1; padding: 0.6rem; border-radius: var(--radius);
  font-size: 0.75rem; text-align: center; font-family: var(--font-mono);
  border: 1px solid rgba(255,255,255,0.1);
}

/* ── History ── */
.history-section {
  margin-top: auto; border-top: 1px solid var(--border); padding-top: 1rem;
  display: flex; flex-direction: column; gap: 0.6rem;
}
.history-label {
  font-size: 0.6rem; letter-spacing: 0.18em; color: var(--text-dim);
  display: flex; align-items: center; gap: 0.5rem;
}
.history-label span {
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 999px; padding: 0.1rem 0.5rem;
  font-size: 0.6rem; color: var(--acid);
}
.history-list {
  display: flex; flex-direction: column; gap: 0.4rem;
  max-height: 160px; overflow-y: auto;
  scrollbar-width: thin; scrollbar-color: var(--border) transparent;
}
.history-item {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.4rem 0.6rem; border-radius: var(--radius);
  background: var(--surface2); border: 1px solid var(--border);
  cursor: pointer; transition: border-color var(--transition);
  font-size: 0.72rem;
}
.history-item:hover { border-color: var(--acid); }
.history-dot {
  width: 20px; height: 20px; border-radius: 50%; flex-shrink: 0;
  border: 1px solid rgba(255,255,255,0.15);
}
.history-hex { color: var(--text-dim); font-family: var(--font-mono); }
.history-name { color: var(--text-main); flex: 1; }
.history-time { color: var(--text-dim); font-size: 0.6rem; }

.clear-history-btn {
  background: none; border: 1px solid var(--border-hot);
  border-radius: var(--radius); padding: 0.35rem 0.75rem;
  color: var(--neon-pink); font-family: var(--font-mono); font-size: 0.6rem;
  letter-spacing: 0.1em; cursor: pointer;
  transition: background var(--transition), color var(--transition);
  align-self: flex-start;
}
.clear-history-btn:hover { background: rgba(255,60,172,0.1); }

/* ── Footer ── */
.site-footer {
  position: relative; z-index: 10;
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.75rem 2rem;
  border-top: 1px solid var(--border);
  background: rgba(13,13,13,0.8);
  font-size: 0.6rem; letter-spacing: 0.12em; color: var(--text-dim);
}
.footer-sep { color: var(--border); }

/* ── Utilities ── */
.hidden { display: none !important; }

/* ── Animations ── */
@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes pulse-ring {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50%       { opacity: 0.7; transform: scale(1.04); }
}
@keyframes avatar-glow {
  0%, 100% { box-shadow: 0 0 0 rgba(204,255,0,0); }
  50%       { box-shadow: 0 0 12px rgba(204,255,0,0.4); }
}
@keyframes typing-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30%            { transform: translateY(-6px); opacity: 1; }
}
@keyframes slide-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes orb-predict {
  0%   { transform: scale(1); }
  30%  { transform: scale(1.2); }
  60%  { transform: scale(0.95); }
  100% { transform: scale(1); }
}
.orb.predicting { animation: orb-predict 0.6s ease forwards; }

/* ── Responsive ── */
@media (max-width: 1100px) {
  .app-layout {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
  }
  .panel-chat { grid-column: 1 / -1; min-height: 400px; }
}
@media (max-width: 700px) {
  .app-layout { grid-template-columns: 1fr; }
  .panel-chat { grid-column: 1; }
  .site-header { padding: 1rem; }
  .header-tag { display: none; }
}