:root {
  --bg: #f6f5f2;
  --panel: #ffffff;
  --text: #1d1d1b;
  --muted: #74726c;
  --border: #e2dfd8;
  --accent: #2f6f5e;
  --accent-text: #ffffff;
  --mine: #e6f0ec;
  --danger: #b3261e;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161715;
    --panel: #1f201e;
    --text: #e8e6e1;
    --muted: #9a978f;
    --border: #33342f;
    --accent: #5fae96;
    --accent-text: #0f1512;
    --mine: #233129;
    --danger: #f2847b;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

button, input { font: inherit; color: inherit; }

button {
  border: 0;
  border-radius: 8px;
  padding: 0.55rem 1rem;
  background: var(--accent);
  color: var(--accent-text);
  cursor: pointer;
}

button:disabled { opacity: 0.6; cursor: default; }

input {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.55rem 0.75rem;
  background: var(--panel);
  min-width: 0;
}

input:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* --- chat --- */

.chat {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  max-width: 760px;
  margin: 0 auto;
  padding-inline: 16px;
}

.bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-block: 0.8rem;
  border-bottom: 1px solid var(--border);
}

.bar .title { font-weight: 650; letter-spacing: 0.02em; }
.bar .spacer { flex: 1; }
.bar .user { color: var(--muted); }

.link {
  background: none;
  color: var(--accent);
  padding: 0.3rem 0.4rem;
}

.log {
  flex: 1;
  overflow-y: auto;
  padding-block: 0.75rem;
}

.older {
  display: block;
  margin: 0 auto 0.75rem;
  background: none;
  color: var(--accent);
  border: 1px solid var(--border);
}

.msg {
  display: grid;
  grid-template-columns: 3.2rem 1fr;
  gap: 0 0.5rem;
  padding: 0.3rem 0.5rem;
  border-radius: 6px;
}

.msg time {
  grid-row: span 2;
  color: var(--muted);
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  padding-top: 0.12rem;
}

.msg .author { font-weight: 600; font-size: 0.85rem; }
.msg .text { white-space: pre-wrap; overflow-wrap: anywhere; }
.msg.mine { background: var(--mine); }
.msg.system .text { color: var(--muted); font-style: italic; }

.composer {
  display: flex;
  gap: 0.5rem;
  padding-block: 0.75rem 1rem;
  border-top: 1px solid var(--border);
}

.composer input { flex: 1; }

.error { color: var(--danger); min-height: 1.4em; margin: 0; font-size: 0.9rem; }

/* --- prijava --- */

.login {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding-inline: 16px;
}

.login form {
  width: min(100%, 340px);
  display: grid;
  gap: 0.75rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}

.login h1 { margin: 0 0 0.25rem; font-size: 1.3rem; }
.login label { display: grid; gap: 0.3rem; font-size: 0.9rem; color: var(--muted); }