:root {
  --ps-bg: #0f172a;
  --ps-card: #111827;
  --ps-border: #1f2933;
  --ps-yellow: #ffd447;
  --ps-blue: #2b5fff;
  --ps-text: #e5e7eb;
  --ps-muted: #9ca3af;
  --ps-bubble-ai: #ffffff;
  --ps-bubble-user: #2563eb;
  --ps-bubble-ai-border: #e5edff;
  --ps-shadow-soft: 0 10px 25px rgba(0,0,0,0.35);
}

* {
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #1f2937 0, #020617 55%);
  color: var(--ps-text);
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */

.ps-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 18px;
  background: rgba(15,23,42,0.95);
  border-bottom: 1px solid rgba(148,163,184,0.3);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.ps-header-left {
  display: flex;
  flex-direction: column;
}

.ps-logo-text {
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  text-shadow: 0 3px 0 #000;
}

.ps-logo-poke {
  color: var(--ps-yellow);
  -webkit-text-stroke: 1px #000;
  text-stroke: 1px #000;
}

.ps-logo-scanr {
  color: var(--ps-blue);
  -webkit-text-stroke: 1px #000;
  text-stroke: 1px #000;
}

.ps-tagline {
  font-size: 0.85rem;
  color: var(--ps-muted);
  margin-top: 2px;
}

.ps-header-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.inline-form {
  display: flex;
  align-items: center;
  gap: 4px;
}

.ps-label {
  font-size: 0.75rem;
  color: var(--ps-muted);
}

select {
  background: #020617;
  color: var(--ps-text);
  border-radius: 999px;
  padding: 4px 10px;
  border: 1px solid #4b5563;
  font-size: 0.8rem;
}

/* Main layout */

.ps-main {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 18px 12px 24px;
}

.ps-chat-shell {
  max-width: 1100px;
  width: 100%;
  display: grid;
  gap: 18px;
}

@media (min-width: 900px) {
  .ps-chat-shell {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.2fr);
    align-items: stretch;
  }
}

/* Left info */

.ps-chat-info {
  background: linear-gradient(145deg, #111827, #020617);
  border-radius: 18px;
  padding: 20px 18px;
  box-shadow: var(--ps-shadow-soft);
  border: 1px solid rgba(148,163,184,0.25);
}

.ps-chat-info h1 {
  font-size: 1.35rem;
  margin: 0 0 10px 0;
}

.ps-chat-info p {
  font-size: 0.92rem;
  color: var(--ps-muted);
  margin: 0;
}

/* Chat panel */

.ps-chat-panel {
  background: rgba(15,23,42,0.98);
  border-radius: 18px;
  padding: 14px 14px 16px;
  box-shadow: var(--ps-shadow-soft);
  border: 1px solid rgba(148,163,184,0.3);
  display: flex;
  flex-direction: column;
}

.chat-window {
  flex: 1;
  max-height: 65vh;
  overflow-y: auto;
  padding: 8px;
  border-radius: 12px;
  background: radial-gradient(circle at top, #111827 0, #020617 60%);
  border: 1px solid rgba(55,65,81,0.8);
}

.msg {
  margin: 8px 0;
  display: flex;
}

.msg.user {
  justify-content: flex-end;
}

.msg.ai {
  justify-content: flex-start;
}

.bubble {
  max-width: 80%;
  padding: 8px 12px;
  border-radius: 14px;
  font-size: 0.9rem;
  line-height: 1.4;
}

.msg.user .bubble {
  background: var(--ps-bubble-user);
  color: #e5efff;
  border-bottom-right-radius: 4px;
  box-shadow: 0 4px 12px rgba(37,99,235,0.5);
}

.msg.ai .bubble {
  background: var(--ps-bubble-ai);
  color: #111827;
  border: 1px solid var(--ps-bubble-ai-border);
  border-bottom-left-radius: 4px;
  box-shadow: 0 3px 10px rgba(15,23,42,0.3);
}

/* Chat input */

.input-area {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.input-area input[type="text"] {
  flex: 1;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid #4b5563;
  background: #020617;
  color: var(--ps-text);
  font-size: 0.9rem;
}

.input-area input[type="text"]::placeholder {
  color: #6b7280;
}

button {
  padding: 8px 12px;
  border-radius: 999px;
  border: none;
  background: var(--ps-blue);
  color: #f9fafb;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  transition: transform 0.1s ease, box-shadow 0.15s ease, background 0.15s ease;
}

button:hover {
  background: #1d4ed8;
  box-shadow: 0 6px 14px rgba(37,99,235,0.55);
  transform: translateY(-1px);
}

button:active {
  transform: translateY(0);
  box-shadow: none;
}

.ps-hint {
  margin-top: 8px;
  font-size: 0.8rem;
  color: var(--ps-muted);
}

/* Footer */

.ps-footer {
  padding: 10px 16px;
  font-size: 0.75rem;
  color: var(--ps-muted);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px;
  border-top: 1px solid rgba(55,65,81,0.7);
  background: #020617;
}

.ps-footer a {
  color: var(--ps-muted);
  text-decoration: none;
  margin-left: 8px;
}

.ps-footer a:hover {
  text-decoration: underline;
}

/* Mobile tweaks */

@media (max-width: 768px) {
  .ps-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .ps-header-right {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .ps-chat-info {
    order: -1;
  }

  .ps-main {
    padding-top: 12px;
  }

  .chat-window {
    max-height: 55vh;
  }
}