:root {
  color-scheme: light;
  --ink: #081426;
  --muted: #5e718b;
  --line: #cfe1f3;
  --paper: #eaf7ff;
  --white: #ffffff;
  --accent: #1f9cf0;
  --accent-bright: #65d5ff;
  --accent-dark: #0876c9;
  --navy: #07172d;
  font-family:
    "Yu Gothic", "Hiragino Kaku Gothic ProN", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  max-width: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% -8%, rgba(255, 255, 255, 0.96), transparent 35rem),
    radial-gradient(circle at 92% 8%, rgba(66, 181, 255, 0.35), transparent 31rem),
    linear-gradient(145deg, #dff5ff 0%, #bde8ff 48%, #8fd2f7 100%);
  color: var(--ink);
}

main {
  width: min(1440px, calc(100% - 48px));
  margin: 0 auto;
  padding: 52px 0 72px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 48px;
  align-items: end;
  margin-bottom: 30px;
}

.eyebrow {
  margin: 0;
  color: #0879bd;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(132, 222, 255, 0.7);
  border-radius: 10px;
  background: linear-gradient(145deg, #7ee4ff, #229df4);
  box-shadow: 0 8px 28px rgba(41, 175, 255, 0.35);
  color: #061326;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 16px;
  font-weight: 900;
}

h1 {
  max-width: 880px;
  margin: 0;
  color: #082746;
  font-size: clamp(42px, 5vw, 72px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.055em;
}

.lead {
  max-width: 720px;
  margin: 18px 0 0;
  color: #315b7b;
  font-size: 16px;
  line-height: 1.8;
}

.network-address {
  margin: 8px 0 0;
  color: #0879bd;
  font-size: 12px;
  font-weight: 700;
}

.rule-card {
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 8px;
}

.rule-card span {
  border: 1px solid rgba(15, 133, 201, 0.24);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.56);
  backdrop-filter: blur(14px);
  padding: 9px 14px;
  color: #124a72;
  font-size: 13px;
  text-align: center;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.13fr) minmax(380px, 0.87fr);
  width: 100%;
  min-width: 0;
  overflow: hidden;
  border: 1px solid rgba(144, 216, 255, 0.34);
  border-radius: 24px;
  background: rgba(247, 252, 255, 0.97);
  box-shadow:
    0 34px 100px rgba(0, 7, 22, 0.38),
    inset 0 1px rgba(255, 255, 255, 0.9);
}

form,
aside {
  width: 100%;
  min-width: 0;
  padding: 32px;
}

form {
  border-right: 1px solid #cfe3f5;
  background: linear-gradient(155deg, #ffffff, #f6fbff);
}

.date-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  min-width: 0;
  gap: 16px;
}

label span,
.text-label > span {
  display: block;
  margin-bottom: 8px;
  color: #243b55;
  font-size: 13px;
  font-weight: 700;
}

input,
textarea {
  min-width: 0;
  width: 100%;
  border: 1px solid #bdd7ed;
  border-radius: 13px;
  background: #fbfdff;
  color: var(--ink);
  font: inherit;
  outline: none;
  transition:
    border-color 140ms ease,
    box-shadow 140ms ease;
}

input {
  height: 48px;
  padding: 0 14px;
}

textarea {
  min-height: 500px;
  resize: vertical;
  padding: 18px;
  font-size: 15px;
  line-height: 1.75;
}

input:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow:
    0 0 0 3px rgba(31, 156, 240, 0.15),
    0 10px 30px rgba(23, 125, 197, 0.08);
}

.text-label {
  display: block;
  margin-top: 22px;
}

.actions {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 20px;
}

button {
  min-height: 48px;
  border-radius: 13px;
  padding: 0 20px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

button:disabled {
  cursor: wait;
  opacity: 0.6;
}

.primary {
  border: 1px solid #168fe0;
  background: linear-gradient(135deg, #36c5ff, #157be1);
  box-shadow: 0 12px 28px rgba(20, 127, 214, 0.25);
  color: white;
}

.primary:hover:not(:disabled) {
  background: linear-gradient(135deg, #60d3ff, #1688ec);
  transform: translateY(-1px);
}

.secondary {
  border: 1px solid #bfd8ed;
  background: #f6fbff;
  color: #31506d;
}

.status {
  min-height: 24px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.status.error {
  color: #a43b31;
}

aside {
  min-height: 680px;
  background:
    linear-gradient(rgba(234, 247, 255, 0.9), rgba(242, 249, 255, 0.96)),
    repeating-linear-gradient(
      135deg,
      rgba(35, 142, 218, 0.04) 0,
      rgba(35, 142, 218, 0.04) 1px,
      transparent 1px,
      transparent 14px
    );
}

aside .eyebrow {
  color: var(--accent-dark);
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

h2 {
  margin: 0;
  font-size: 24px;
}

.count {
  border-radius: 999px;
  background: linear-gradient(135deg, #0d2b4b, #116fae);
  padding: 7px 12px;
  color: white;
  font-size: 12px;
  font-weight: 700;
}

.preview-list {
  display: grid;
  gap: 12px;
  max-height: 665px;
  overflow: auto;
  padding-right: 6px;
}

.preview-card {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  border: 1px solid #c9deef;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.92);
  padding: 16px;
  box-shadow: 0 10px 24px rgba(31, 104, 157, 0.07);
}

.preview-card > div {
  min-width: 0;
}

.preview-number {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid #9fc8e7;
  border-radius: 50%;
  color: #197fbd;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
}

.preview-kind {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.preview-title {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.preview-text {
  display: -webkit-box;
  margin: 6px 0 0;
  overflow: hidden;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow-wrap: anywhere;
}

.empty {
  display: grid;
  min-height: 180px;
  place-items: center;
  border: 1px dashed #9fc9e8;
  border-radius: 14px;
  padding: 32px;
  color: #67809a;
  font-size: 13px;
  line-height: 1.8;
  text-align: center;
}

@media (max-width: 980px) {
  main {
    width: min(100% - 28px, 760px);
    padding-top: 34px;
  }

  .hero,
  .workspace {
    grid-template-columns: 1fr;
  }

  .rule-card {
    grid-template-columns: repeat(4, 1fr);
  }

  form {
    border-right: 0;
    border-bottom: 1px solid #cfe3f5;
  }
}

@media (max-width: 620px) {
  body {
    background:
      radial-gradient(circle at 18% 0%, rgba(255, 255, 255, 0.92), transparent 24rem),
      linear-gradient(160deg, #dff5ff 0%, #a9def9 100%);
  }

  main {
    width: min(100% - 20px, 520px);
    padding: 26px 0 40px;
  }

  .hero {
    gap: 22px;
    margin-bottom: 20px;
  }

  h1 {
    font-size: 48px;
  }

  .lead {
    font-size: 14px;
    line-height: 1.7;
  }

  .rule-card {
    grid-template-columns: 1fr 1fr;
    width: 100%;
  }

  .date-grid {
    grid-template-columns: 1fr;
  }

  form,
  aside {
    padding: 20px;
  }

  .workspace,
  form,
  aside,
  .preview-list,
  .preview-card {
    max-width: 100%;
  }

  textarea {
    min-height: 390px;
    font-size: 16px;
  }

  input,
  button {
    min-height: 52px;
  }

  .actions {
    flex-direction: column-reverse;
  }

  button {
    width: 100%;
  }
}