:root {
  --ink: #10263d;
  --ink-soft: #3d566f;
  --canvas: #f6f9fc;
  --canvas-alt: #ecf3f8;
  --card: rgba(255, 255, 255, 0.92);
  --border: #c9d6e3;
  --accent: #0f766e;
  --accent-strong: #0c5f5a;
  --accent-warm: #cca510;
  --danger: #b42318;
  --danger-strong: #8f1a12;
  --shadow: 0 12px 32px rgba(19, 45, 74, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Manrope", "Avenir Next", "Trebuchet MS", sans-serif;
  background:
    radial-gradient(circle at 16% 14%, rgba(15, 118, 110, 0.16), transparent 42%),
    radial-gradient(circle at 83% 22%, rgba(180, 83, 9, 0.16), transparent 45%),
    linear-gradient(160deg, var(--canvas) 0%, var(--canvas-alt) 52%, #f9f5eb 100%);
}

.app-header {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 1200;
}

.app-header-inner {
  display: flex;
  gap: 0.8rem 1.25rem;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow);
  backdrop-filter: blur(2px);
  padding: 0.72rem 0.95rem;
  margin-top: 0.7rem;
}

.app-brand {
  color: #112a43;
  font-family: "Fraunces", "Iowan Old Style", "Times New Roman", serif;
  font-size: 1.04rem;
  font-weight: 700;
  text-decoration: none;
}

.app-nav {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
  align-items: center;
}

.app-nav a {
  border-radius: 999px;
  border: 1px solid #b9cde0;
  padding: 0.36rem 0.68rem;
  background: #f5fbff;
  color: #1e476b;
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.1px;
  text-decoration: none;
}

.app-nav-group {
  position: relative;
  display: inline-block;
}

.app-nav-group > summary {
  list-style: none;
  border-radius: 999px;
  border: 1px solid #b9cde0;
  padding: 0.36rem 0.68rem;
  background: #f5fbff;
  color: #1e476b;
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.1px;
  cursor: pointer;
  user-select: none;
}

.app-nav-group > summary::-webkit-details-marker {
  display: none;
}

.app-nav-group > summary::after {
  content: " ▾";
}

.app-nav-group[open] > summary::after {
  content: " ▴";
}

.app-nav-group > summary:hover {
  border-color: #89abc8;
  color: #113451;
  background: #ebf6ff;
}

.app-nav-group.is-active > summary,
.app-nav-group[open] > summary {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(15, 118, 110, 0.28);
}

.app-nav-group-menu {
  position: absolute;
  top: calc(100% + 0.3rem);
  left: 0;
  min-width: 210px;
  z-index: 1300;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0.35rem;
  border-radius: 12px;
  border: 1px solid #b9cde0;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow);
}

.app-nav-group-menu a {
  display: block;
  width: 100%;
  border-radius: 8px;
  border: 1px solid transparent;
  padding: 0.46rem 0.62rem;
  background: transparent;
  color: #1e476b;
  font-weight: 700;
  text-align: left;
}

.app-nav-group-menu a:hover {
  border-color: #d4e2ef;
  background: #eef6ff;
  color: #113451;
}

.app-nav a:hover {
  border-color: #89abc8;
  color: #113451;
  background: #ebf6ff;
}

.app-nav a.is-active,
.app-nav a[aria-current="page"] {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(15, 118, 110, 0.28);
}

.app-auth {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.app-auth-user {
  padding: 0.28rem 0.56rem;
  border-radius: 999px;
  border: 1px solid #d4e2ef;
  background: #f7fbff;
  color: #1f3e5c;
  font-size: 0.78rem;
  font-weight: 700;
}

.app-auth-form {
  margin: 0;
}

.app-auth-button {
  border-radius: 999px;
  border: 1px solid #b9cde0;
  padding: 0.36rem 0.68rem;
  background: #f5fbff;
  color: #1e476b;
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.1px;
  text-decoration: none;
}

button.app-auth-button {
  cursor: pointer;
}

.app-auth-button:hover {
  border-color: #89abc8;
  color: #113451;
  background: #ebf6ff;
  filter: none;
}

.app-auth-button.is-active,
.app-auth-button[aria-current="page"] {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(15, 118, 110, 0.28);
}

.page,
main {
  max-width: 1140px;
  margin: 2rem auto;
  padding: 1.5rem;
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}

.card,
main {
  background: var(--card);
  border-radius: 14px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(2px);
  padding: 1.25rem;
  animation: riseIn 0.45s ease both;
}

.card:nth-of-type(2) {
  animation-delay: 0.08s;
}

.card:nth-of-type(3) {
  animation-delay: 0.16s;
}

h1,
h2 {
  margin-top: 0;
  color: #112a43;
  font-family: "Fraunces", "Iowan Old Style", "Times New Roman", serif;
  letter-spacing: 0.2px;
}

p {
  line-height: 1.55;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.62rem;
  background: rgba(252, 254, 255, 0.95);
  color: var(--ink);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.18);
}

input[type="checkbox"] {
  width: auto;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.errors {
  margin-top: 0.25rem;
  color: var(--danger);
  font-size: 0.92rem;
}

.hint {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.actions {
  margin-top: 1rem;
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

button,
a.button {
  border: 0;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #fff;
  padding: 0.68rem 1.04rem;
  font-weight: 800;
  letter-spacing: 0.2px;
  text-decoration: none;
  cursor: pointer;
}

button:hover,
a.button:hover {
  filter: brightness(1.05);
}

a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

a:hover {
  color: var(--accent-strong);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.pair-aligned-table {
  table-layout: fixed;
}

th,
td {
  text-align: left;
  padding: 0.45rem 0.55rem;
  border-bottom: 1px solid #e4ecf4;
  vertical-align: top;
}

th {
  background: linear-gradient(180deg, #eef5fb 0%, #f4f8fb 100%);
  color: #203a55;
}

tbody tr:nth-child(even) {
  background: rgba(16, 38, 61, 0.03);
}

.pagination {
  margin-top: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.42rem;
  flex-wrap: wrap;
}

.page-link,
.page-ellipsis {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.05rem;
  padding: 0.38rem 0.6rem;
  border-radius: 999px;
  font-size: 0.84rem;
  font-weight: 800;
}

a.page-link {
  border: 1px solid #b9cde0;
  background: #f5fbff;
  color: #1e476b;
  text-decoration: none;
}

a.page-link:hover {
  border-color: #89abc8;
  color: #113451;
  background: #ebf6ff;
}

.page-link.is-active {
  border: 1px solid var(--accent);
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(15, 118, 110, 0.24);
}

.page-link.is-disabled {
  border: 1px solid #d1dcea;
  background: #f2f7fc;
  color: #7e94aa;
  cursor: not-allowed;
}

.page-ellipsis {
  color: #5f7590;
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.84rem;
  color: #50627b;
}

.help-indicator {
  display: inline-flex;
  width: 1.2rem;
  height: 1.2rem;
  margin-left: 0.45rem;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 800;
  color: #1d4ed8;
  border: 2px solid #1d4ed8;
  background: #fff;
  box-shadow: 0 0 0 1px rgba(29, 78, 216, 0.1) inset;
  cursor: help;
  vertical-align: middle;
}

.help-indicator:focus-visible {
  outline: 2px solid #1d4ed8;
  outline-offset: 2px;
}

.tooltip-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.hover-tooltip {
  display: none;
  position: absolute;
  left: 0;
  top: calc(100% - 4px);
  z-index: 8;
  min-width: 260px;
  max-width: 420px;
  border: 1px solid #c0d2e3;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 10px 20px rgba(25, 46, 68, 0.18);
  padding: 0.5rem 0.66rem;
  color: #1e3b55;
  font-size: 0.82rem;
  line-height: 1.38;
}

.tooltip-wrap:hover .hover-tooltip,
.tooltip-wrap:focus-within .hover-tooltip {
  display: block;
}

.train-advanced-details {
  margin-top: 0.85rem;
  border: 1px solid #d5e2ee;
  border-radius: 10px;
  background: linear-gradient(180deg, #f8fbff 0%, #f2f8fd 100%);
}

.train-advanced-details > summary {
  cursor: pointer;
  padding: 0.6rem 0.7rem;
  color: #1e3b55;
}

.train-advanced-content {
  padding: 0.72rem 0.7rem 0.78rem;
}

.train-advanced-content label {
  margin-bottom: 0.45rem;
}

.train-advanced-content label .tooltip-wrap {
  margin-left: 0.32rem;
}

.metric-tooltip-anchor {
  position: relative;
  display: inline-block;
  border-bottom: 1px dotted #7f93a9;
  color: #153755;
  cursor: help;
}

.metric-tooltip-anchor:focus-visible {
  outline: 2px solid #1d4ed8;
  outline-offset: 2px;
  border-radius: 3px;
}

.metric-tooltip-anchor::after {
  content: attr(data-tooltip);
  white-space: pre-line;
  position: absolute;
  left: 0;
  top: calc(100% + 7px);
  z-index: 9;
  display: none;
  min-width: 200px;
  max-width: 260px;
  border: 1px solid #c0d2e3;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 10px 20px rgba(25, 46, 68, 0.2);
  padding: 0.42rem 0.55rem;
  color: #1e3b55;
  font-size: 0.78rem;
  line-height: 1.35;
}

.metric-tooltip-anchor:hover::after,
.metric-tooltip-anchor:focus-visible::after {
  display: block;
}

.app-modal {
  width: min(960px, calc(100vw - 2rem));
  max-height: calc(100vh - 2rem);
  margin: auto;
  border: 1px solid #ccdae7;
  border-radius: 14px;
  box-shadow: 0 24px 56px rgba(16, 35, 52, 0.28);
  background: #ffffff;
  color: var(--ink);
  padding: 1rem 1.05rem 1.05rem;
  overflow: auto;
}

.app-modal-probability {
  width: min(880px, calc(100vw - 2rem));
}

.app-modal::backdrop {
  background: rgba(17, 33, 51, 0.5);
  backdrop-filter: blur(1px);
}

.app-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  margin-bottom: 0.72rem;
}

.app-modal-title {
  margin: 0;
}

.app-modal-close-button {
  border: 1px solid #c0d2e3;
  border-radius: 10px;
  background: #f7fbff;
  color: #23405f;
  font-weight: 800;
  padding: 0.45rem 0.75rem;
}

.app-modal-close-button:hover {
  border-color: #93b1ca;
  background: #eef6fd;
}

.danger-form {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid #f0d4d4;
}

.danger-button {
  border: 0;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--danger) 0%, var(--danger-strong) 100%);
  color: #fff;
  padding: 0.66rem 1rem;
  font-weight: 800;
  cursor: pointer;
}

.danger-button:hover {
  filter: brightness(1.04);
}

.danger-button[disabled] {
  background: linear-gradient(135deg, #c4ccd4 0%, #afb8c2 100%);
  color: #5f6b78;
  cursor: not-allowed;
  filter: none;
}

.danger-button[disabled]:hover {
  filter: none;
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 700px) {
  .page,
  main {
    margin: 1rem auto;
    padding: 0.9rem;
    gap: 0.9rem;
  }

  .card,
  main {
    padding: 0.95rem;
  }

  table {
    font-size: 0.9rem;
  }

  th,
  td {
    padding: 0.38rem 0.42rem;
  }
}