/* ============================================================
   chat.css — Minimal layout
   ============================================================ */

:root {
  --bg: #0e0e11;
  --bg-2: #17171c;
  --bg-3: #1f1f26;
  --text: #f0f0f5;
  --text-dim: #9a9aa5;
  --green: #22c55e;
  --gold: #d4af37;
  --red: #ef4444;
  --blue: #3b82f6;
  --border: #2a2a33;
  --radius: 12px;
  --sidebar: 260px;
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
}

/* Sidebar */
.sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--sidebar);
  background: var(--bg-2);
  border-right: 1px solid var(--border);
  padding: 18px 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 20;
}
.side-brand { font-weight: 700; color: var(--gold); padding: 6px 4px; }
.side-new {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
}
.side-nav { display: flex; flex-direction: column; gap: 4px; margin-top: 8px; }
.side-item {
  padding: 10px 12px;
  border-radius: var(--radius);
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
}
.side-item:hover { background: var(--bg-3); color: var(--text); }
.side-footer {
  margin-top: auto;
  text-align: center;
  font-size: 12px;
  color: var(--text-dim);
  padding: 10px;
}

/* Main */
.main {
  margin-left: var(--sidebar);
  display: flex;
  flex-direction: column;
  height: 100vh;
}
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 18px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; color: var(--gold); }
.status { color: var(--text-dim); font-size: 13px; }
.balance-chip {
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--bg-3);
  border: 1px solid var(--green);
  color: var(--green);
  font-weight: 700;
  text-decoration: none;
  font-size: 13px;
}

/* Chat */
.chat-wrap {
  flex: 1;
  overflow-y: auto;
  padding: 18px 14px 100px;
  max-width: 780px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.msg { display: flex; }
.msg.user { justify-content: flex-end; }
.msg.assistant { justify-content: flex-start; }
.bubble {
  max-width: 85%;
  padding: 12px 14px;
  border-radius: var(--radius);
  line-height: 1.5;
  white-space: pre-wrap;
  word-wrap: break-word;
}
.msg.user .bubble { background: var(--green); color: #06210f; }
.msg.assistant .bubble { background: var(--bg-3); border: 1px solid var(--border); }

/* Composer */
.composer {
  position: fixed;
  bottom: 0;
  left: var(--sidebar);
  right: 0;
  display: flex;
  gap: 8px;
  padding: 12px 14px;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
}
.composer textarea {
  flex: 1;
  resize: none;
  max-height: 120px;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-3);
  color: var(--text);
  font: inherit;
  outline: none;
}
.composer button {
  width: 44px;
  border: none;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.composer button:disabled { opacity: 0.5; }

/* Modal */
.modal {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.75);
  display: flex; align-items: center; justify-content: center;
  padding: 20px; z-index: 50;
}
.modal[hidden] { display: none; }
.modal-box {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  max-width: 340px; width: 100%;
  text-align: center;
}
.modal-box h2 { color: var(--gold); margin-bottom: 10px; font-size: 18px; }
.modal-box p { color: var(--text-dim); margin-bottom: 18px; font-size: 14px; }
.cta {
  display: block; padding: 12px;
  background: var(--green); color: #06210f;
  border-radius: var(--radius);
  text-decoration: none; font-weight: 700;
}

/* Auth pages */
.auth-wrap {
  max-width: 420px; margin: 0 auto;
  padding: 40px 20px; min-height: 100vh;
  display: flex; flex-direction: column;
}
.auth-title { text-align: center; color: var(--gold); font-size: 24px; margin-bottom: 6px; }
.auth-sub { text-align: center; color: var(--text-dim); margin-bottom: 24px; }
.auth-form { display: flex; flex-direction: column; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field > span { color: var(--text-dim); font-size: 13px; }
.field input {
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-3);
  color: var(--text);
  font: inherit;
  outline: none;
  width: 100%;
}
.field input:focus { border-color: var(--green); }
.field input.invalid { border-color: var(--red); }
.field .err { color: var(--red); font-size: 12px; min-height: 14px; }
.field .hint { color: var(--text-dim); font-size: 12px; }
.input-wrap { position: relative; display: flex; }
.input-wrap input { flex: 1; }
.toggle-eye {
  position: absolute; right: 8px; top: 50%;
  transform: translateY(-50%);
  background: none; border: none;
  color: var(--text-dim); cursor: pointer;
  display: flex; align-items: center;
}
.toggle-eye:hover { color: var(--text); }
.btn-green {
  padding: 14px; border: none; border-radius: var(--radius);
  background: var(--green); color: #06210f;
  font-weight: 700; font-size: 15px; cursor: pointer;
}
.auth-error, .auth-notice {
  padding: 10px 12px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 12px;
}
.auth-error { background: rgba(239,68,68,.1); border: 1px solid var(--red); color: var(--red); }
.auth-notice { background: rgba(34,197,94,.1); border: 1px solid var(--green); color: var(--green); }
.auth-link { text-align: center; margin-top: 18px; color: var(--text-dim); font-size: 14px; }
.auth-link a { color: var(--green); text-decoration: none; font-weight: 600; }
.auth-footer { margin-top: auto; padding-top: 40px; text-align: center; color: var(--text-dim); font-size: 12px; }

/* Chips */
.quick-amounts { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 10px; }
.chip {
  padding: 10px 14px; border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-3); color: var(--text);
  font-weight: 600; font-size: 14px; cursor: pointer;
}
.chip.active { border-color: var(--green); background: rgba(34,197,94,.15); color: var(--green); }

/* Hamburger */
.hamburger {
  display: none;
  position: fixed; top: 10px; left: 10px;
  z-index: 30;
  background: var(--bg-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 40px; height: 40px;
  font-size: 18px; cursor: pointer;
}

/* Mobile */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.2s ease;
  }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .composer { left: 0; }
  .hamburger { display: block; }
  .top-bar { padding-left: 58px; }
  .bubble { max-width: 90%; }
}