/* [1] Reset */
* { box-sizing: border-box; }
:root {
  --primary: #1877f2;
  --bg: #f0f2f5;
  --card: #ffffff;
  --text: #1c1e21;
  --muted: #65676b;
  --border: #d8dadf;
  --shadow: 0 10px 30px rgba(0,0,0,.08);
}
body {
  margin: 0;
  font-family: Tahoma, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}
.hidden { display: none !important; }

/* [2] Buttons */
.btn {
  border: 0;
  border-radius: 12px;
  padding: 11px 16px;
  cursor: pointer;
  font-weight: 700;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-light { background: #eef0f4; color: var(--text); }
.icon-btn {
  border: 0;
  background: #eef0f4;
  border-radius: 50%;
  width: 42px;
  height: 42px;
  cursor: pointer;
  font-size: 20px;
}

/* [3] Login */
.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
  background: linear-gradient(140deg, #e7f0ff, #f0f2f5 50%, #ffffff);
}
.login-card {
  width: min(430px, 100%);
  background: var(--card);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 28px;
  text-align: center;
}
.login-logo-wrap { display: flex; justify-content: center; margin-bottom: 12px; }
.login-logo, .brand-logo {
  object-fit: contain;
  background: #fff;
  border: 1px solid var(--border);
}
.login-logo { width: 78px; height: 78px; border-radius: 22px; }
.login-logo-fallback, .brand-fallback {
  background: var(--primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 900;
}
.login-logo-fallback { width: 78px; height: 78px; border-radius: 22px; font-size: 26px; }
.login-card h1 { margin: 8px 0 4px; }
.login-card p { margin: 0 0 20px; color: var(--muted); }

/* [4] Shell */
.app-shell {
  min-height: 100vh;
  display: flex;
}
.sidebar {
  width: 290px;
  background: var(--card);
  border-left: 1px solid var(--border);
  padding: 16px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}
.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.brand-logo, .brand-fallback { width: 48px; height: 48px; border-radius: 14px; }
.brand h2 { margin: 0; font-size: 18px; }
.brand p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }
.menu { display: grid; gap: 8px; margin-top: 16px; }
.menu-item {
  border: 0;
  text-align: right;
  background: transparent;
  border-radius: 12px;
  padding: 12px 14px;
  cursor: pointer;
  font-weight: 700;
  color: var(--text);
}
.menu-item:hover, .menu-item.active { background: #e7f3ff; color: var(--primary); }

.main {
  flex: 1;
  min-width: 0;
}
.topbar {
  height: 66px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 10px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  position: sticky;
  top: 0;
  z-index: 10;
}
.search-pill {
  flex: 1;
  background: #f0f2f5;
  border-radius: 999px;
  padding: 12px 18px;
  color: var(--muted);
}
.user-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}

/* [5] Screens */
.screen {
  display: none;
  padding: 18px;
  max-width: 1280px;
  margin: 0 auto;
}
.screen.active { display: block; }
.feed-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 18px;
  box-shadow: 0 2px 10px rgba(0,0,0,.03);
  margin-bottom: 16px;
}
.hero {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}
.hero h1 { margin: 0 0 6px; }
.hero p { margin: 0; color: var(--muted); }

/* [6] Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 14px;
  margin-bottom: 16px;
}
.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
}
.stat-card span { color: var(--muted); }
.stat-card strong { display: block; font-size: 30px; margin-top: 8px; color: var(--primary); }

/* [7] Forms */
.form-grid {
  display: grid;
  gap: 14px;
}
.form-grid.cols-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.form-grid.cols-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
label {
  display: grid;
  gap: 7px;
  text-align: right;
}
label span {
  font-weight: 700;
  color: var(--muted);
  font-size: 13px;
}
input, select, textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px 12px;
  font: inherit;
  background: #fff;
}
textarea { resize: vertical; }
.wide { grid-column: 1 / -1; }
.check {
  display: flex;
  align-items: center;
  gap: 8px;
  align-self: end;
  font-weight: 700;
  color: var(--muted);
}
.check input { width: auto; }
.message {
  align-self: center;
  color: var(--muted);
  font-weight: 700;
}
.message.ok { color: #0a7a2f; }
.message.err { color: #b00020; }

/* [8] Feed */
.movement-feed {
  display: grid;
  gap: 10px;
}
.feed-item {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 12px;
  background: #fff;
}
.feed-item strong { color: var(--primary); }
.feed-item p { margin: 5px 0 0; color: var(--muted); }

/* [9] Tables */
.table-wrap {
  overflow: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
  min-width: 850px;
}
th, td {
  border-bottom: 1px solid var(--border);
  padding: 11px;
  text-align: right;
  vertical-align: top;
}
th {
  background: #f7f8fa;
  position: sticky;
  top: 0;
  z-index: 1;
}
tbody tr:hover { background: #f8fbff; }

/* [10] Mobile */
@media (max-width: 900px) {
  .app-shell { display: block; }
  .sidebar {
    position: fixed;
    right: 0;
    top: 0;
    transform: translateX(105%);
    transition: .2s;
    z-index: 50;
    box-shadow: var(--shadow);
  }
  body.sidebar-open .sidebar { transform: translateX(0); }
  .topbar { gap: 8px; padding: 8px; }
  .search-pill { display: none; }
  .user-chip { margin-inline-start: auto; }
  .screen { padding: 12px; }
  .hero { display: grid; }
  .stats-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .form-grid.cols-2, .form-grid.cols-3 { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .stats-grid { grid-template-columns: 1fr; }
  .login-card { padding: 20px; }
}