:root {
  --bg: #f5f5f7;
  --card: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --urgent: #ff3b30;
  --urgent-bg: #fff1f0;
  --action: #007aff;
  --action-bg: #f0f6ff;
  --border: #d2d2d7;
  --radius: 12px;
  --shadow: 0 1px 4px rgba(0,0,0,0.08);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ── Screens ─────────────────────────────────────────────────────────────── */

.screen { min-height: 100vh; }
.hidden { display: none !important; }

/* ── Login ───────────────────────────────────────────────────────────────── */

#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.login-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.login-logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.login-card h1 {
  font-size: 1.5rem;
  text-align: center;
}

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

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

.login-card button:hover:not(:disabled) { opacity: 0.9; }
.login-card button:disabled { opacity: 0.6; cursor: not-allowed; }

.error {
  color: var(--urgent);
  font-size: 0.875rem;
  margin-top: 0.75rem;
  text-align: center;
}

/* ── Header ──────────────────────────────────────────────────────────────── */

header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
}

.logo {
  width: 30px;
  height: 30px;
  object-fit: contain;
}

header h1 { font-size: 1.25rem; }

.nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 500;
}

.nav button {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.25rem 0.6rem;
  cursor: pointer;
  font-size: 1rem;
}

.nav button:hover { background: var(--bg); }

.logout {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--muted);
}

/* ── Main content ────────────────────────────────────────────────────────── */

main {
  max-width: 800px;
  margin: 1.5rem auto;
  padding: 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem 1.5rem;
}

.card h2 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.8rem;
}

.urgent-header { color: var(--urgent); }
.action-header { color: var(--action); }

/* ── Stats ───────────────────────────────────────────────────────────────── */

.stats {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}

.stat {
  font-size: 0.8rem;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  background: var(--bg);
}

.stat.urgent { background: var(--urgent-bg); color: var(--urgent); }
.stat.action { background: var(--action-bg); color: var(--action); }

/* ── Lists ───────────────────────────────────────────────────────────────── */

ul { list-style: none; }

li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  line-height: 1.4;
}

li:last-child { border-bottom: none; }

.tag {
  display: inline-block;
  font-size: 0.72rem;
  padding: 0.1rem 0.5rem;
  border-radius: 20px;
  background: var(--bg);
  color: var(--muted);
  margin-left: 0.4rem;
  vertical-align: middle;
}

/* ── Email cards ─────────────────────────────────────────────────────────── */

.email-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.email-header {
  padding: 0.75rem 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.email-meta { flex: 1; min-width: 0; }
.email-subject { font-weight: 500; font-size: 0.95rem; }
.email-from { font-size: 0.8rem; color: var(--muted); margin-top: 0.15rem; }
.email-date { font-size: 0.72rem; color: var(--muted); margin-left: 0.4rem; }

.badge {
  font-size: 0.72rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
}

.badge.urgent { background: var(--urgent-bg); color: var(--urgent); }
.badge.action { background: var(--action-bg); color: var(--action); }

.email-body {
  padding: 0.75rem 1rem 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text);
}

.muted { color: var(--muted); font-style: italic; }

.view-original {
  display: inline-block;
  margin-top: 0.6rem;
  padding: 0.25rem 0.6rem;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--muted);
  cursor: pointer;
}

.view-original:hover { background: var(--bg); color: var(--text); }

/* ── Email body modal ─────────────────────────────────────────────────────── */

.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
}

.modal-card {
  position: relative;
  background: var(--card);
  border-radius: var(--radius);
  width: 92%;
  max-width: 720px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
}

.modal-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.modal-header h2 {
  flex: 1;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  text-transform: none;
  letter-spacing: 0;
}

#modal-close {
  background: none;
  border: none;
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  color: var(--muted);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
}

#modal-close:hover { background: var(--bg); color: var(--text); }

.modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 1.25rem;
  font-size: 0.8rem;
  line-height: 1.6;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text);
  margin: 0;
}

/* ── Loading / empty ─────────────────────────────────────────────────────── */

.loading, .empty {
  text-align: center;
  color: var(--muted);
  padding: 3rem;
}