/* 第一輪：主介面、頂欄、側抽屜、三頁；mobile-first */
:root {
  --bg: #f5f5f5;
  --card: #fff;
  --text: #1a1a1a;
  --muted: #666;
  --border: #e0e0e0;
  --primary: #2563eb;
  --topbar-h: 56px;
  --drawer-w: 260px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 16px;
  color: var(--text);
  background: var(--bg);
}

/* ----- Login ----- */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.login-card {
  background: var(--card);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  width: 100%;
  max-width: 360px;
}

.login-card h1 {
  margin: 0 0 1.5rem;
  font-size: 1.35rem;
}

.login-card label {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.login-card input {
  width: 100%;
  padding: 0.6rem 0.75rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
}

.login-card button {
  width: 100%;
  padding: 0.75rem;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
}

.login-card button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.login-error {
  color: #b91c1c;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

/* ----- App shell ----- */
.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  height: var(--topbar-h);
  background: var(--card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.topbar-title {
  font-weight: 600;
  margin-right: auto;
}

.topbar-nav {
  display: none;
}

.topbar-nav a {
  margin-left: 1rem;
  color: var(--text);
  text-decoration: none;
}

.topbar-nav a.active {
  color: var(--primary);
  font-weight: 500;
}

.menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin: 0 -0.5rem 0 0;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.25rem;
}

@media (min-width: 768px) {
  .topbar-nav {
    display: flex;
  }
  .menu-btn {
    display: none;
  }
}

.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.drawer-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--drawer-w);
  max-width: 85vw;
  height: 100vh;
  background: var(--card);
  box-shadow: 2px 0 12px rgba(0,0,0,0.1);
  z-index: 201;
  transform: translateX(-100%);
  transition: transform 0.2s;
  padding: var(--topbar-h) 0 0;
}

.drawer.open {
  transform: translateX(0);
}

.drawer nav a {
  display: block;
  padding: 0.75rem 1.25rem;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
}

.drawer nav a.active {
  background: rgba(37, 99, 235, 0.08);
  color: var(--primary);
  font-weight: 500;
}

.main {
  flex: 1;
  padding: 1rem;
}

.page-title {
  margin: 0 0 1rem;
  font-size: 1.25rem;
}

/* ----- Dashboard ----- */
.progress-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.progress-card {
  background: var(--card);
  padding: 1rem 1.25rem;
  border-radius: 10px;
  margin-bottom: 0.75rem;
  border: 1px solid var(--border);
}

.progress-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
}

.progress-card .meta {
  font-size: 0.85rem;
  color: var(--muted);
}

.progress-bar-wrap {
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  margin-top: 0.5rem;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--primary);
  border-radius: 4px;
  transition: width 0.2s;
}

/* ----- Agent Status ----- */
.agent-list {
  display: grid;
  gap: 0.75rem;
}

.agent-card {
  background: var(--card);
  padding: 1rem 1.25rem;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.agent-card .name {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.agent-card .model {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.agent-card .stats {
  font-size: 0.9rem;
}

.agent-card .status {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  font-size: 0.8rem;
  margin-top: 0.5rem;
}

.agent-card .status.active {
  background: #dcfce7;
  color: #166534;
}

.agent-card .status.idle {
  background: #f3f4f6;
  color: var(--muted);
}

/* ----- Spending ----- */
.spending-table-wrap {
  overflow-x: auto;
}

.spending-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.spending-table th,
.spending-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.spending-table th {
  background: #f8fafc;
  font-weight: 600;
  font-size: 0.9rem;
}

.spending-table tr:last-child td {
  border-bottom: none;
}

.loading, .error-msg {
  text-align: center;
  padding: 2rem;
  color: var(--muted);
}

.error-msg {
  color: #b91c1c;
}