:root {
  --bg: #f3f5f8;
  --surface: #ffffff;
  --text: #1a2332;
  --muted: #5c6b7a;
  --line: #d8dee6;
  --accent: #1f6feb;
  --accent-hover: #1858c4;
  --danger: #c62828;
  --danger-bg: #fdecea;
  --ok: #1b7f4a;
  --shadow: 0 8px 28px rgba(26, 35, 50, 0.08);
  --radius: 12px;
  --font: "Segoe UI", "Candara", "Trebuchet MS", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 500px at 10% -10%, #dce8ff 0%, transparent 55%),
    radial-gradient(900px 420px at 100% 0%, #e8f4ee 0%, transparent 50%),
    var(--bg);
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.brand {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand span {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.95rem;
  margin-left: 8px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.nav a,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 14px;
  font: inherit;
  font-size: 0.92rem;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.nav a:hover,
.btn:hover {
  border-color: #b8c4d4;
  background: #f7f9fc;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}

.btn-danger {
  background: var(--danger-bg);
  border-color: #f0b4b0;
  color: var(--danger);
}

.btn-danger:hover {
  background: #fad7d4;
}

.btn-sm {
  padding: 5px 10px;
  font-size: 0.82rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}

.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(420px, 100%);
}

.login-card h1 {
  margin: 0 0 6px;
  font-size: 1.6rem;
  letter-spacing: -0.02em;
}

.login-card p {
  margin: 0 0 20px;
  color: var(--muted);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.field label {
  font-size: 0.88rem;
  color: var(--muted);
}

.field input {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  background: #fff;
}

.field input:focus {
  outline: 2px solid #c5d8ff;
  border-color: var(--accent);
}

.error {
  color: var(--danger);
  background: var(--danger-bg);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 0.9rem;
  margin-bottom: 12px;
  display: none;
}

.error.show {
  display: block;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
  align-items: center;
}

.search {
  flex: 1 1 220px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  background: #fff;
}

.dropzone {
  border: 2px dashed #b7c5d6;
  border-radius: var(--radius);
  padding: 28px 16px;
  text-align: center;
  color: var(--muted);
  background: linear-gradient(180deg, #fafcff, #f4f7fb);
  margin-bottom: 18px;
  transition: border-color 0.15s, background 0.15s;
}

.dropzone.dragover {
  border-color: var(--accent);
  background: #eaf1ff;
  color: var(--text);
}

.dropzone strong {
  color: var(--text);
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}

.table th {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  font-weight: 600;
}

.table tr:last-child td {
  border-bottom: none;
}

.file-name {
  font-weight: 600;
}

.muted {
  color: var(--muted);
  font-size: 0.88rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.empty {
  text-align: center;
  padding: 36px 12px;
  color: var(--muted);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(20, 28, 40, 0.45);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 50;
}

.modal-backdrop.open {
  display: flex;
}

.modal {
  width: min(480px, 100%);
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  max-height: 90vh;
  overflow: auto;
}

.modal.wide {
  width: min(560px, 100%);
}

.modal h2 {
  margin: 0 0 14px;
  font-size: 1.2rem;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}

.check-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 320px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
}

.check-list label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 2px;
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: #e8eef8;
  color: #30507a;
}

.badge.teamlead {
  background: #e6f5ec;
  color: var(--ok);
}

.view-frame-wrap {
  height: calc(100vh - 72px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow);
}

.view-frame-wrap iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.view-top {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
}

.view-top h1 {
  margin: 0;
  font-size: 1.05rem;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (max-width: 700px) {
  .table thead {
    display: none;
  }

  .table,
  .table tbody,
  .table tr,
  .table td {
    display: block;
    width: 100%;
  }

  .table tr {
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
  }

  .table td {
    border: none;
    padding: 4px 0;
  }
}