:root {
  --navy: #000c28;
  --silver-bright: #ebebeb;
  --silver: #dddddd;
  --silver-dark: #818181;
  --text: #f4f5f8;
  --text-dim: rgba(244, 245, 248, 0.72);
  --surface: rgba(255, 255, 255, 0.04);
  --surface-raised: rgba(255, 255, 255, 0.065);
  --line: rgba(235, 235, 235, 0.22);
  --line-strong: rgba(235, 235, 235, 0.48);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--navy);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

/* ── layout ── */

.shell {
  width: min(1100px, calc(100% - 40px));
  margin: 0 auto;
  padding: 40px 0 80px;
}

/* ── masthead ── */

.masthead {
  text-align: center;
}

.masthead-emblem {
  display: block;
  width: min(480px, 88%);
  height: auto;
  margin: 0 auto 20px;
}

h1 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.8rem, 4vw, 3.4rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.1;
  color: var(--silver-bright);
}

/* ── ornament ── */

.ornament-band {
  width: 100vw;
  height: 48px;
  margin: 28px 0 0;
  margin-left: 50%;
  transform: translateX(-50%);
  background: url("assets/border3.svg") repeat-x center / auto 48px;
  opacity: 0.7;
}

/* ── card ── */

.card {
  position: relative;
  margin-top: 48px;
  padding: 36px;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  box-shadow:
    inset 0 0 0 1px rgba(129, 129, 129, 0.4),
    0 16px 40px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}

.card-corner {
  position: absolute;
  top: -4px;
  right: 16px;
  width: 120px;
  height: 120px;
  opacity: 0.55;
  pointer-events: none;
}

h2 {
  margin: 0 0 8px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.3rem, 2.6vw, 1.85rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--silver-bright);
}

/* ── sections ── */

.sections {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-top: 32px;
}

.section {
  margin: 0;
  padding: 28px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.section legend {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 4px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--silver-bright);
}

/* ── field layout ── */

.row {
  display: grid;
  gap: 20px;
}

.row + .row {
  margin-top: 28px;
}

.row-2 { grid-template-columns: repeat(2, 1fr); }
.row-3 { grid-template-columns: repeat(3, 1fr); }

.field {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.field > label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--silver-dark);
}

.field-row {
  display: flex;
  gap: 10px;
}

.field-row > select,
.field-row > input {
  flex: 1;
  min-width: 0;
}

/* ── controls ── */

input,
textarea {
  width: 100%;
  padding: 11px 14px;
  font: inherit;
  color: var(--text);
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: 0;
  outline: none;
}

input:focus,
textarea:focus {
  border-color: var(--line-strong);
}

select {
  width: 100%;
  padding: 11px 14px;
  font: inherit;
  color: var(--navy);
  background: var(--silver);
  border: 1px solid var(--line);
  border-radius: 0;
  outline: none;
  cursor: pointer;
}

select option {
  color: var(--navy);
  background: var(--silver);
}

select:focus {
  border-color: var(--line-strong);
}

textarea {
  resize: vertical;
  line-height: 1.65;
}

.btn {
  flex-shrink: 0;
  padding: 11px 18px;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--navy);
  background: linear-gradient(180deg, var(--silver-bright), var(--silver));
  border: 1px solid rgba(235, 235, 235, 0.7);
  cursor: pointer;
}

.btn:hover,
.btn:focus-visible {
  background: linear-gradient(180deg, #fff, var(--silver-bright));
}

/* ── tokens ── */

.tokens {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.token {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  font-size: 0.92rem;
  color: var(--text);
  background: var(--surface-raised);
  border: 1px solid var(--line);
}

.token button {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--silver-dark);
  font: inherit;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
}

.token button:hover { color: var(--silver-bright); }

/* ── server lines ── */

.line-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.line-row {
  display: grid;
  grid-template-columns: 0.9fr 0.65fr 1.6fr auto;
  gap: 10px;
  align-items: center;
}

.line-row .remove-btn {
  padding: 8px 12px;
  border: 0;
  background: transparent;
  color: var(--silver-dark);
  font: inherit;
  font-size: 1rem;
  cursor: pointer;
}

.line-row .remove-btn:hover { color: var(--silver-bright); }

/* ── output ── */

.section-output textarea {
  min-height: 580px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.92rem;
  line-height: 1.55;
}

/* ── responsive ── */

@media (max-width: 780px) {
  .shell {
    width: min(100% - 24px, 1100px);
    padding: 28px 0 48px;
  }

  .card {
    padding: 24px 20px;
    margin-top: 36px;
  }

  .section {
    padding: 20px 16px;
  }

  .ornament-band {
    height: 22px;
    background-size: auto 22px;
  }

  .row-2,
  .row-3,
  .line-row {
    grid-template-columns: 1fr;
  }

  .section-output textarea {
    min-height: 400px;
  }
}