/* Memphis Chat — palette + layout zgodne z memphis-v5.pl */
:root {
  --bg: #040509;
  --fg: #edf2f7;
  --muted: #97a3b3;
  --accent: #ff6b35;
  --accent-2: #2dd4bf;
  --good: #22c55e;
  --danger: #ef4444;
  --warn: #f59e0b;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, sans-serif;
  --line: rgba(237, 242, 247, 0.08);
  --line-strong: rgba(237, 242, 247, 0.16);
  --card: rgba(237, 242, 247, 0.03);
  --card-hi: rgba(237, 242, 247, 0.06);
  --shadow: 0 10px 40px rgba(0,0,0,0.5);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

button {
  font-family: inherit;
  cursor: pointer;
  background: none;
  border: 0;
  color: inherit;
}

textarea, input {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* tło: subtelna siatka jak na memphis-v5.pl */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(237, 242, 247, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(237, 242, 247, 0.025) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

/* topbar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(4, 5, 9, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--fg);
  text-decoration: none;
}
.brand-mark {
  font-size: 22px;
  color: var(--accent);
  line-height: 1;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-name {
  font-weight: 600;
  letter-spacing: 0.5px;
}
.brand-tag {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.topbar-nav {
  display: flex;
  gap: 22px;
}
.nav-link {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 200ms, border-color 200ms;
}
.nav-link:hover {
  color: var(--fg);
  border-color: var(--accent-2);
  text-decoration: none;
}

/* shell */
.chat-shell {
  max-width: 920px;
  margin: 0 auto;
  padding: 48px 28px 200px;
}

/* intro */
.chat-intro {
  margin-bottom: 28px;
}
.chat-title {
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: -0.5px;
}
.title-accent {
  color: var(--accent);
}
.chat-sub {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 15px;
  max-width: 60ch;
}
.chat-sub strong {
  color: var(--fg);
  font-weight: 500;
}
.chat-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.pill {
  font-family: var(--mono);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--line-strong);
  color: var(--muted);
  text-transform: lowercase;
  letter-spacing: 0.5px;
}
.pill-ok {
  color: var(--accent-2);
  border-color: rgba(45, 212, 191, 0.4);
  background: rgba(45, 212, 191, 0.06);
}

/* okno rozmowy */
.chat-window {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--card);
  min-height: 320px;
  max-height: 60vh;
  overflow-y: auto;
  padding: 22px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.chat-log {
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex: 1;
}

.chat-empty {
  margin: auto;
  text-align: center;
  max-width: 480px;
  padding: 20px 0;
}
.empty-text {
  color: var(--muted);
  margin: 0 0 18px;
}
.empty-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.suggestion {
  font-size: 12px;
  font-family: var(--mono);
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--card-hi);
  border: 1px solid var(--line-strong);
  color: var(--fg);
  transition: background 200ms, border-color 200ms;
}
.suggestion:hover {
  background: rgba(45, 212, 191, 0.08);
  border-color: var(--accent-2);
}

/* wiadomości */
.msg {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  animation: msg-in 240ms ease;
}
@keyframes msg-in {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}
.msg-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--mono);
  flex-shrink: 0;
}
.msg.user .msg-avatar {
  background: rgba(255, 107, 53, 0.15);
  color: var(--accent);
  border: 1px solid rgba(255, 107, 53, 0.3);
}
.msg.assistant .msg-avatar {
  background: rgba(45, 212, 191, 0.12);
  color: var(--accent-2);
  border: 1px solid rgba(45, 212, 191, 0.3);
}
.msg-body {
  flex: 1;
  min-width: 0;
}
.msg-meta {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin-bottom: 4px;
}
.msg-text {
  color: var(--fg);
  word-wrap: break-word;
  overflow-wrap: break-word;
  white-space: pre-wrap;
}
.msg-text code {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--card-hi);
  border: 1px solid var(--line);
  padding: 1px 6px;
  border-radius: 4px;
}
.msg-text pre {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--card-hi);
  border: 1px solid var(--line);
  padding: 12px;
  border-radius: 8px;
  overflow-x: auto;
}
.msg-text a {
  border-bottom: 1px dotted var(--accent-2);
}
.msg.error .msg-body {
  color: var(--danger);
}
.msg.error .msg-meta {
  color: var(--danger);
}

.msg.assistant.streaming .msg-text::after {
  content: "▍";
  display: inline-block;
  color: var(--accent-2);
  animation: blink 1s steps(2) infinite;
  margin-left: 2px;
}
@keyframes blink {
  50% { opacity: 0; }
}

/* form */
.chat-form {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  width: min(920px, calc(100% - 56px));
  z-index: 5;
}
.input-row {
  display: flex;
  gap: 10px;
  padding: 8px;
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  box-shadow: var(--shadow);
  transition: border-color 200ms;
}
.input-row:focus-within {
  border-color: var(--accent-2);
}
.chat-input {
  flex: 1;
  background: transparent;
  border: 0;
  outline: none;
  resize: none;
  padding: 10px 12px;
  max-height: 160px;
  min-height: 24px;
  line-height: 1.5;
}
.chat-input::placeholder {
  color: var(--muted);
}
.send-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 18px;
  background: var(--accent);
  color: #fff;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  transition: background 200ms, transform 100ms;
}
.send-btn:hover {
  background: #ff8258;
}
.send-btn:active {
  transform: scale(0.97);
}
.send-btn:disabled {
  background: var(--line-strong);
  color: var(--muted);
  cursor: not-allowed;
}
.send-arrow {
  font-size: 16px;
}

.form-foot {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  padding: 0 4px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
}
.form-status {
  color: var(--accent-2);
}
.form-status.err {
  color: var(--danger);
}

/* footer */
.page-foot {
  border-top: 1px solid var(--line);
  margin-top: 80px;
  padding: 40px 28px 28px;
  background: rgba(4, 5, 9, 0.5);
}
.foot-grid {
  max-width: 920px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
}
.foot-h {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin: 0 0 8px;
}
.foot-p {
  margin: 0;
  color: var(--fg);
  font-size: 13px;
  line-height: 1.6;
}
.foot-bottom {
  max-width: 920px;
  margin: 28px auto 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.5px;
}

/* scrollbar */
.chat-window::-webkit-scrollbar { width: 6px; }
.chat-window::-webkit-scrollbar-track { background: var(--bg); }
.chat-window::-webkit-scrollbar-thumb { background: var(--accent-2); border-radius: 3px; }

/* mobile */
@media (max-width: 640px) {
  .topbar { padding: 14px 18px; }
  .chat-shell { padding: 28px 18px 200px; }
  .topbar-nav { display: none; }
  .form-foot { font-size: 9px; }
  .foot-bottom { font-size: 9px; }
}