:root {
  --bg: #212121;
  --sidebar: #171717;
  --main: #212121;
  --elev: #2f2f2f;
  --text: #ececec;
  --muted: #b4b4b4;
  --line: #424242;
  --user: #2f2f2f;
  --accent: #fff;
  --accent-text: #0d0d0d;
  --green: #10a37f;
  --danger: #ef4444;
  --radius: 24px;
  --font: "Söhne", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
}

.hidden { display: none !important; }

/* Login — ChatGPT-like centered card */
.login-view {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background: #fff;
  color: #0d0d0d;
}

.login-box {
  width: min(360px, 100%);
  text-align: center;
}

.login-logo, .empty-logo {
  width: 48px;
  height: 48px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #000;
  color: #fff;
  font-weight: 700;
  font-size: 1.2rem;
}

.login-box h1 {
  margin: 0 0 0.35rem;
  font-size: 1.75rem;
  font-weight: 600;
}

.login-sub {
  margin: 0 0 1.5rem;
  color: #6b6b6b;
}

.login-box label {
  display: block;
  text-align: left;
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
}

.login-box input,
.panel input {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid #cfcfcf;
  border-radius: 8px;
  font: inherit;
  margin-bottom: 0.85rem;
}

.btn-primary {
  width: 100%;
  border: 0;
  border-radius: 999px;
  padding: 0.75rem 1rem;
  background: #000;
  color: #fff;
  font: inherit;
  font-weight: 560;
  cursor: pointer;
}

.btn-ghost {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  border-radius: 999px;
  padding: 0.55rem 0.9rem;
  font: inherit;
  cursor: pointer;
}

.error { color: var(--danger); margin-top: 0.75rem; }

/* App shell */
.app {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--sidebar);
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  border-right: 1px solid #000;
}

.btn-new {
  width: 100%;
  text-align: left;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
  font: inherit;
  cursor: pointer;
}

.btn-new:hover { background: var(--elev); }

.sidebar-section { display: flex; flex-direction: column; gap: 0.15rem; }

.side-link {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--text);
  text-align: left;
  padding: 0.65rem 0.75rem;
  border-radius: 10px;
  font: inherit;
  cursor: pointer;
}

.side-link:hover, .side-link.voice-on { background: var(--elev); }
.side-link.quiet { color: var(--muted); }
.side-ico { width: 1.1rem; opacity: 0.85; }

.sidebar-foot {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--line);
}

.auto-speak {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
}

.side-status {
  margin: 0;
  padding: 0 0.5rem;
  color: var(--muted);
  font-size: 0.75rem;
}

.main {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-width: 0;
  background: var(--main);
  position: relative;
}

.mobile-bar {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--line);
}

.mobile-title { font-weight: 600; }

.icon-btn {
  border: 0;
  background: transparent;
  color: var(--text);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  cursor: pointer;
  display: grid;
  place-items: center;
}
.icon-btn:hover { background: var(--elev); }
.icon-btn.mic.recording {
  background: rgba(239, 68, 68, 0.2);
  color: #fecaca;
}

.chat {
  overflow-y: auto;
  padding: 1.25rem 1rem 1.5rem;
}

.empty {
  min-height: 55vh;
  display: grid;
  place-content: center;
  text-align: center;
  gap: 0.5rem;
}
.empty h1 {
  margin: 0;
  font-size: clamp(1.6rem, 4vw, 2rem);
  font-weight: 600;
}

.row-msg {
  display: flex;
  justify-content: center;
  padding: 0.85rem 0;
}

.row-msg .inner {
  width: min(48rem, 100%);
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 1rem;
  align-items: start;
}

.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.8rem;
  font-weight: 700;
  margin-top: 0.15rem;
}
.avatar.user { background: #ab68ff; color: #fff; }
.avatar.bot { background: var(--green); color: #fff; }

.bubble-body {
  line-height: 1.6;
  white-space: pre-wrap;
  font-size: 1rem;
  padding-top: 0.2rem;
}

.msg-actions {
  margin-top: 0.45rem;
  display: flex;
  gap: 0.35rem;
}

.speak-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  border-radius: 6px;
}
.speak-btn:hover { background: var(--elev); color: var(--text); }
.speak-btn.playing { color: var(--green); }

.composer-wrap {
  padding: 0 1rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.voice-hint {
  min-height: 1.1rem;
  margin: 0 0 0.45rem;
  color: var(--muted);
  font-size: 0.82rem;
  text-align: center;
}

.composer {
  width: min(48rem, 100%);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.35rem;
  align-items: end;
  background: var(--elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.55rem 0.65rem;
}

.composer textarea {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  resize: none;
  min-height: 1.5rem;
  max-height: 10rem;
  padding: 0.55rem 0.35rem;
  outline: none;
}

.send-btn {
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-text);
  display: grid;
  place-items: center;
  cursor: pointer;
}
.send-btn:disabled { opacity: 0.35; cursor: default; }

.disclaimer {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.72rem;
  text-align: center;
}

.overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 20;
}

.panel {
  position: absolute;
  z-index: 30;
  top: 0;
  right: 0;
  width: min(400px, 100%);
  height: 100%;
  background: #2a2a2a;
  border-left: 1px solid var(--line);
  padding: 1rem;
  overflow: auto;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}
.panel-head h2 { margin: 0; font-size: 1.1rem; }
.panel-lead, .muted { color: var(--muted); font-size: 0.9rem; }
.panel label {
  display: block;
  margin: 0.75rem 0 0.35rem;
  font-size: 0.8rem;
  color: var(--muted);
}
.panel input {
  background: var(--elev);
  border-color: var(--line);
  color: var(--text);
  margin-bottom: 0.5rem;
}
.row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.5rem; }

.mail-list { display: flex; flex-direction: column; gap: 0.5rem; margin: 0.75rem 0; }
.mail-item {
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  cursor: pointer;
  background: var(--elev);
}
.mail-item:hover { border-color: #666; }
.mail-item strong { display: block; margin-bottom: 0.2rem; }
.mail-item.unseen { border-color: var(--green); }

@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    z-index: 40;
    inset: 0 auto 0 0;
    width: min(280px, 86vw);
    transform: translateX(-105%);
    transition: transform 0.2s ease;
  }
  .sidebar.open { transform: translateX(0); }
  .mobile-bar { display: flex; }
}