:root {
  --ink: #212529;
  --muted: #6c757d;
  --line: #dee2e6;
  --surface: #ffffff;
  --soft: #f4f6f8;
  --nav: #004a87;
  --nav-2: #003965;
  --blue: #0478a8;
  --green: #16835c;
  --red: #c2413b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--soft);
  font-family: "Franklin Gothic Book", "Arial Narrow", Arial, sans-serif;
}

button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }

.login-screen {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(360px, 42vw) 1fr;
  background: var(--nav-2);
}

.login-panel {
  display: grid;
  align-content: center;
  gap: 44px;
  padding: clamp(32px, 7vw, 92px);
  background: #fff;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--nav);
  color: #fff;
  font-weight: 800;
  font-size: 20px;
}

.brand strong, .brand span { display: block; }
.brand span { color: var(--muted); font-size: 13px; }

.login-form {
  display: grid;
  gap: 18px;
  max-width: 460px;
}

.eyebrow {
  margin: 0 0 4px;
  color: #0274bd;
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 14px; font-size: clamp(34px, 5vw, 56px); line-height: 1; }
h2 { margin-bottom: 4px; }

label {
  display: grid;
  gap: 7px;
  color: #697386;
  font-weight: 800;
}

input, select, textarea {
  width: 100%;
  border: 1px solid #ccd6e0;
  border-radius: 6px;
  padding: 12px 14px;
  background: #fff;
  color: var(--ink);
}

textarea { min-height: 88px; resize: vertical; }

.primary-button, .ghost-button, .link-button {
  min-height: 42px;
  border-radius: 5px;
  border: 1px solid transparent;
  padding: 0 16px;
  font-weight: 800;
  text-align: center;
}

.primary-button { background: var(--blue); color: #fff; }
.ghost-button { background: #fff; border-color: var(--line); color: #4b5563; }
.link-button { display: inline-grid; place-items: center; background: transparent; color: var(--nav); }

.login-error {
  color: var(--red);
  font-weight: 800;
}

.login-aside {
  display: grid;
  align-content: end;
  padding: clamp(36px, 7vw, 92px);
  color: #fff;
  background:
    linear-gradient(180deg, rgba(0, 57, 101, 0.55), rgba(0, 57, 101, 0.88)),
    url("https://qa12.grupomilenium.live/storage/events/91v2hjEZcy3NNY0ouF5Sr1Uk0L9LvP0bdSZN98go.png") center / cover;
}

.login-aside strong { font-size: clamp(36px, 6vw, 72px); line-height: 1; }
.login-aside span { max-width: 640px; margin-top: 22px; color: rgba(255,255,255,.82); font-size: 21px; line-height: 1.45; }

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
}

.sidebar {
  background: var(--nav);
  color: #fff;
  padding: 18px 14px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.sidebar .brand-mark { background: #fff; color: var(--nav); }
.sidebar .brand span { color: rgba(255,255,255,.72); }

.nav-list { display: grid; gap: 8px; }

.nav-item {
  min-height: 42px;
  display: flex;
  align-items: center;
  padding: 0 14px;
  border-radius: 4px;
  color: rgba(255,255,255,.82);
}

.nav-item:hover, .nav-item.active {
  background: rgba(255,255,255,.14);
  color: #fff;
}

.main { min-width: 0; padding: 24px; }

.topbar {
  margin: -24px -24px 24px;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.user-pill { color: #4b5563; font-weight: 800; }

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.metric, .panel, .book-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.metric {
  padding: 18px;
  border-top: 4px solid var(--blue);
}

.metric span, .metric small { display: block; color: var(--muted); }
.metric strong { display: block; margin: 6px 0; color: var(--nav); font-size: 30px; }

.panel { padding: 18px; margin-bottom: 18px; }

.panel-heading {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: center;
  margin-bottom: 14px;
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }

.table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
table { width: 100%; border-collapse: collapse; min-width: 780px; }
th { background: var(--nav); color: #fff; text-align: left; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--line); font-size: 14px; vertical-align: top; }
td { color: #374151; }

.form-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; align-items: end; }
.form-grid .wide { grid-column: span 3; }

.book-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 18px; }
.book-card { padding: 16px; display: grid; gap: 10px; border-top: 4px solid var(--blue); }
.book-card span { color: var(--muted); line-height: 1.35; }

.flash { margin-bottom: 16px; padding: 12px 14px; border-radius: 6px; background: #e8f5ee; color: var(--green); font-weight: 800; }
.muted { color: var(--muted); }

@media (max-width: 900px) {
  .login-screen, .app-shell { grid-template-columns: 1fr; }
  .login-aside { display: none; }
  .sidebar { position: static; }
  .metric-grid, .grid-2, .grid-3, .book-grid, .form-grid { grid-template-columns: 1fr; }
  .form-grid .wide { grid-column: auto; }
}