:root {
  --bg: #f7f7f9;
  --fg: #1a1a1a;
  --muted: #777;
  --border: #e3e3e8;
  --accent: #2563eb;
  --danger: #dc2626;
  --row-error: #fff5f5;
  --yt: #ff0000;
  --ig: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
  --tt: #000000;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  font-size: 14px;
}

.container { max-width: 1400px; margin: 0 auto; padding: 16px 20px 60px; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; background: #fff; border-bottom: 1px solid var(--border);
}
.topbar h1 { margin: 0; font-size: 18px; font-weight: 600; }
.topbar .back { color: var(--muted); margin-right: 12px; text-decoration: none; }
.topbar .back:hover { color: var(--fg); }

button {
  font: inherit; cursor: pointer; padding: 8px 14px; border: 1px solid var(--border);
  background: #fff; border-radius: 6px;
}
button:hover { border-color: #c0c0c8; }
button[type="submit"], #refresh-all {
  background: var(--accent); color: #fff; border-color: var(--accent);
}
button[type="submit"]:hover, #refresh-all:hover { background: #1d4ed8; }
button.link, button.danger-link {
  background: none; border: none; padding: 0; color: var(--muted); cursor: pointer;
}
button.danger-link { color: var(--danger); }
button.danger-link:hover { text-decoration: underline; }

input[type="text"], input[type="url"], input[type="password"], input[type="date"] {
  font: inherit; padding: 7px 10px; border: 1px solid var(--border); border-radius: 6px;
  background: #fff;
}
input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

.muted { color: var(--muted); }
.small { font-size: 12px; }
.error { background: #fee; color: var(--danger); padding: 8px 12px; border-radius: 6px; margin-bottom: 10px; }

.inline-form { display: flex; gap: 8px; margin: 16px 0 24px; }
.inline-form input { flex: 1; max-width: 360px; }
.inline { display: inline; }

.clients { list-style: none; padding: 0; margin: 0; }
.clients li {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 14px; background: #fff; border: 1px solid var(--border); border-radius: 8px; margin-bottom: 8px;
}
.client-name { font-weight: 600; color: var(--fg); text-decoration: none; flex: 1; }
.client-name:hover { color: var(--accent); }

.share-block {
  display: flex; align-items: center; gap: 10px; padding: 12px 14px;
  background: #fff; border: 1px solid var(--border); border-radius: 8px; margin-bottom: 16px;
}
.share-block input { flex: 1; }

.add-form {
  background: #fff; border: 1px solid var(--border); border-radius: 8px;
  padding: 0 14px; margin-bottom: 14px;
}
.add-form summary { cursor: pointer; padding: 12px 0; font-weight: 600; }
.grid-form { display: grid; gap: 10px; padding-bottom: 16px; }
.grid-form label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
.grid-form label input { width: 100%; }
.grid-form button { justify-self: start; }

.actions-bar { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }

.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-form {
  background: #fff; padding: 28px 32px; border-radius: 12px; border: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 12px; min-width: 300px;
}
.login-form h1 { margin: 0 0 8px; font-size: 20px; }

.table-wrap { overflow-x: auto; background: #fff; border: 1px solid var(--border); border-radius: 8px; }
table.videos { width: 100%; border-collapse: collapse; min-width: 1100px; }
table.videos th, table.videos td {
  padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: middle;
  font-size: 13px;
}
table.videos thead th { background: #fafafc; font-weight: 600; color: var(--muted); }
table.videos tbody tr:hover { background: #fafafc; }
table.videos tr.row-error { background: var(--row-error); }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
table.videos tfoot .totals { font-weight: 700; background: #fafafc; }
table.videos tfoot .totals td { border-bottom: none; }

table.videos input[type="text"], table.videos input[type="date"] {
  padding: 4px 8px; font-size: 13px; min-width: 160px; border: 1px solid transparent; background: transparent;
}
table.videos input[type="text"]:hover, table.videos input[type="date"]:hover,
table.videos input[type="text"]:focus, table.videos input[type="date"]:focus {
  border-color: var(--border); background: #fff;
}

.actions { white-space: nowrap; }
.actions button { padding: 4px 8px; font-size: 14px; }

.err-tag { color: var(--danger); border-bottom: 1px dashed var(--danger); cursor: help; }

.platform-section {
  margin: 28px 0 0;
  background: #fff; border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
}
.platform-section + .platform-section { margin-top: 36px; }
.platform-section:first-of-type { margin-top: 16px; }

.platform-head {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #fafafc 0%, #fff 100%);
}
.platform-logo { flex-shrink: 0; display: block; }
.platform-meta { display: flex; flex-direction: column; gap: 2px; }
.platform-name { font-size: 20px; font-weight: 700; line-height: 1.1; }
.platform-count { font-size: 12px; }

.platform-section .table-wrap { border: none; border-radius: 0; }
.platform-section table.videos { border: none; }
.platform-totals {
  background: #f1f3f7; color: var(--fg);
  padding: 18px 20px;
  border-top: 1px solid var(--border);
}
.platform-totals header {
  font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 10px;
}
.platform-totals .grand-value { font-size: 22px; color: var(--fg); }

.grand-totals-final {
  margin-top: 32px;
  background: #fff;
  border: 2px solid var(--accent);
}
.grand-totals-final header { color: var(--accent); }
.grand-totals-final .grand-value { font-size: 28px; }

.platform-youtube .platform-name { color: var(--yt); }
.platform-tiktok .platform-name { color: #000; }
.platform-instagram .platform-name {
  background: linear-gradient(45deg, #FED373, #F15245 35%, #D92E7F 60%, #9B36B7);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

.grand-totals {
  margin-top: 36px;
  background: #f1f3f7; color: var(--fg);
  border: 1px solid var(--border); border-radius: 12px;
  padding: 22px 24px;
}
.grand-totals header { font-size: 14px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.grand-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.grand-grid-3 { grid-template-columns: repeat(3, 1fr); }
.grand-grid > div { display: flex; flex-direction: column; gap: 4px; }
.grand-label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.grand-value { font-size: 26px; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--fg); }

@media (max-width: 720px) {
  .grand-grid { grid-template-columns: repeat(2, 1fr); }
  .grand-value { font-size: 22px; }
}