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

:root {
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #21262d;
  --border: #30363d;
  --text: #e6edf3;
  --text2: #8b949e;
  --accent: #58a6ff;
  --green: #3fb950;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  height: 100dvh;
  overflow: hidden;
}

.app {
  display: flex;
  flex-direction: column;
  height: 100dvh;
}

/* Шапка */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

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

.avatar {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, #58a6ff, #3fb950);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 16px; color: #0d1117;
}

.name { font-weight: 600; font-size: 15px; }
.status { font-size: 12px; color: var(--text2); }
.status.online { color: var(--green); }

.usage-badge {
  font-size: 12px;
  font-weight: 600;
  color: #3fb950;
  background: rgba(63, 185, 80, 0.1);
  border: 1px solid rgba(63, 185, 80, 0.3);
  border-radius: 12px;
  padding: 2px 10px;
  margin-left: 8px;
  white-space: nowrap;
  display: none;
  transition: color 0.3s, background 0.3s, border-color 0.3s;
}
.usage-badge:not(:empty) { display: inline-block; }
.usage-badge.warn {
  color: #d29922;
  background: rgba(210, 153, 34, 0.1);
  border-color: rgba(210, 153, 34, 0.3);
}
.usage-badge.danger {
  color: #f85149;
  background: rgba(248, 81, 73, 0.12);
  border-color: rgba(248, 81, 73, 0.3);
}

.header-right { display: flex; gap: 8px; }

.btn-icon {
  background: none; border: none; color: var(--text2);
  cursor: pointer; font-size: 18px; padding: 4px 8px;
  border-radius: 6px; transition: background 0.2s;
}
.btn-icon:hover { background: var(--bg3); color: var(--text); }

/* Терминал */
.terminal-wrap {
  flex: 1;
  overflow-y: auto;
  padding: 12px 16px;
  background: var(--bg);
}

.terminal {
  font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  font-size: 13px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text);
}

/* Зона ввода */
.input-area {
  padding: 12px 16px;
  background: var(--bg2);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.upload-preview {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 10px; margin-bottom: 8px;
  background: var(--bg3); border-radius: 8px;
  font-size: 13px; color: var(--accent);
}
.upload-preview button {
  background: none; border: none; color: var(--text2);
  cursor: pointer; margin-left: auto; font-size: 14px;
}

.input-row {
  display: flex; align-items: flex-end; gap: 8px;
}

.btn-attach {
  cursor: pointer; font-size: 20px; padding: 8px;
  color: var(--text2); transition: color 0.2s;
  flex-shrink: 0; line-height: 1;
}
.btn-attach:hover { color: var(--accent); }

textarea {
  flex: 1;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-size: 14px;
  padding: 10px 14px;
  resize: none;
  outline: none;
  max-height: 300px;
  font-family: inherit;
  line-height: 1.4;
}
textarea:focus { border-color: var(--accent); }
textarea::placeholder { color: var(--text2); }

.btn-send {
  background: var(--accent);
  border: none; border-radius: 10px;
  color: #0d1117; cursor: pointer;
  font-size: 18px; padding: 10px 14px;
  flex-shrink: 0; transition: opacity 0.2s;
}
.btn-send:hover { opacity: 0.85; }
.btn-send:active { opacity: 0.7; }

/* Скроллбар */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* Экран логина */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100dvh;
  background: var(--bg);
}

.login-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  width: 280px;
  padding: 32px 24px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.login-avatar {
  width: 64px; height: 64px;
  background: linear-gradient(135deg, #58a6ff, #3fb950);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 28px; color: #0d1117;
}

.login-title { font-size: 22px; font-weight: 700; }
.login-sub { font-size: 13px; color: var(--text2); margin-bottom: 4px; }

.login-box input[type="password"] {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 15px;
  padding: 12px 14px;
  outline: none;
  text-align: center;
  letter-spacing: 3px;
}
.login-box input:focus { border-color: var(--accent); }

.login-error { font-size: 13px; color: #f85149; min-height: 18px; }

.login-box button {
  width: 100%;
  background: var(--accent);
  border: none; border-radius: 10px;
  color: #0d1117; cursor: pointer;
  font-size: 16px; font-weight: 600;
  padding: 12px;
  transition: opacity 0.2s;
}
.login-box button:hover { opacity: 0.85; }
.login-box button:disabled { opacity: 0.5; cursor: default; }

/* Мобильная адаптация */
@media (max-width: 600px) {
  .terminal { font-size: 11px; }
  .header { padding: 10px 12px; }
  .input-area { padding: 10px 12px; }
}