:root {
  --bg: #f5f7f8;
  --panel: #ffffff;
  --line: #d9e0e4;
  --text: #182024;
  --muted: #637078;
  --green: #00a878;
  --blue: #2563eb;
  --red: #b42318;
  --amber: #b7791f;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; background: var(--bg); color: var(--text); }
button, input, select, textarea { font: inherit; }
button { border: 1px solid var(--line); background: var(--panel); border-radius: 6px; padding: 9px 12px; cursor: pointer; }
button.primary { background: var(--green); border-color: var(--green); color: #fff; font-weight: 700; }
button.ghost { background: transparent; }
input, select, textarea { width: 100%; border: 1px solid var(--line); border-radius: 6px; background: #fff; padding: 9px 10px; }
textarea { min-height: 110px; resize: vertical; }
.login { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-card { width: min(420px, 100%); background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 24px; }
.login-card h1 { margin: 0 0 6px; font-size: 24px; }
.login-card p { margin: 0 0 20px; color: var(--muted); }
.form-row { margin: 12px 0; }
.error { color: var(--red); min-height: 22px; }
.shell { min-height: 100vh; display: grid; grid-template-rows: auto 1fr; }
.topbar { background: var(--panel); border-bottom: 1px solid var(--line); padding: 12px 18px; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.brand { font-weight: 800; }
.user { display: flex; align-items: center; gap: 10px; color: var(--muted); }
.layout { display: grid; grid-template-columns: 320px 1fr 360px; gap: 14px; padding: 14px; min-height: 0; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; min-height: 0; }
.filters { padding: 12px; display: grid; gap: 10px; }
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.stat { border: 1px solid var(--line); border-radius: 6px; padding: 10px; }
.stat b { display: block; font-size: 22px; }
.stat span { color: var(--muted); font-size: 12px; }
.lead-list { overflow: auto; max-height: calc(100vh - 245px); border-top: 1px solid var(--line); }
.lead-item { width: 100%; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; text-align: left; padding: 12px; background: #fff; }
.lead-item.active { background: #eefaf5; }
.lead-title { font-weight: 700; margin-bottom: 4px; }
.lead-meta { color: var(--muted); font-size: 13px; display: flex; gap: 7px; flex-wrap: wrap; }
.tag { border: 1px solid var(--line); border-radius: 999px; padding: 2px 7px; background: #fff; }
.tag.green { color: var(--green); border-color: #9ee4cc; }
.tag.amber { color: var(--amber); border-color: #ead19b; }
.tag.blue { color: var(--blue); border-color: #b9cdfb; }
.detail { padding: 16px; overflow: auto; }
.detail h1 { margin: 0 0 6px; font-size: 24px; }
.muted { color: var(--muted); }
.contact-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 14px 0; }
.contact-box { border: 1px solid var(--line); border-radius: 6px; padding: 10px; min-height: 68px; }
.contact-box label { display: block; color: var(--muted); font-size: 12px; margin-bottom: 4px; }
.contact-box a { color: var(--blue); text-decoration: none; overflow-wrap: anywhere; }
.edit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 14px 0; }
.call-box { border-top: 1px solid var(--line); margin-top: 16px; padding-top: 16px; }
.call-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.activity { padding: 12px; border-bottom: 1px solid var(--line); }
.activity strong { display: block; }
.activity time { color: var(--muted); font-size: 12px; }
.activity p { margin: 7px 0 0; white-space: pre-wrap; }
.activity-list { overflow: auto; max-height: calc(100vh - 110px); }
@media (max-width: 1100px) { .layout { grid-template-columns: 280px 1fr; } .activity-panel { display: none; } }
@media (max-width: 760px) { .layout { grid-template-columns: 1fr; } .lead-list { max-height: 360px; } .contact-grid, .edit-grid, .call-grid { grid-template-columns: 1fr; } }