:root {
  --bg: #0f1117;
  --panel: #171a22;
  --panel-soft: rgba(23, 26, 34, 0.94);
  --panel-2: #222633;
  --line: #303543;
  --text: #f5f6fa;
  --sub: #aeb6c5;
  --muted: #858b99;
  --point: #8b5cf6;
  --point-2: #38bdf8;
  --danger: #ff5b6e;
  --success: #38d996;
  --input: #10131b;
  --input-focus: #131724;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family:
    Pretendard,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans KR",
    sans-serif;
  color: var(--text);
  line-height: 1.5;
  background:
    radial-gradient(circle at top left, rgba(139, 92, 246, 0.18), transparent 34%),
    radial-gradient(circle at top right, rgba(56, 189, 248, 0.13), transparent 32%),
    var(--bg);
}

button,
input,
textarea,
select {
  font-family: inherit;
}

.app {
  width: min(1180px, 94%);
  margin: 0 auto;
  padding: 34px 0 60px;
}

.header {
  margin-bottom: 20px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.nav a {
  color: var(--sub);
  text-decoration: none;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  padding: 9px 14px;
  border-radius: 999px;
  font-size: 14px;
}

.nav a.active {
  color: #fff;
  border-color: rgba(139, 92, 246, 0.7);
  background: rgba(139, 92, 246, 0.18);
}

.hero {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr;
  gap: 18px;
  align-items: stretch;
  background: rgba(23, 26, 34, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow);
  border-radius: 26px;
  padding: 28px;
}

.eyebrow {
  margin: 0 0 8px;
  color: #8ef6ff;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(28px, 5vw, 46px);
  letter-spacing: -0.045em;
  line-height: 1.08;
}

.lead {
  margin: 14px 0 0;
  color: var(--sub);
  font-size: 16px;
  max-width: 720px;
}

.save-panel {
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  padding: 16px;
}

.save-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 10px;
}

.top-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(420px, 0.95fr);
  gap: 18px;
  align-items: start;
}

.card {
  background: var(--panel-soft);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.card + .card {
  margin-top: 18px;
}

.right-column .output-card {
  position: sticky;
  top: 20px;
}

h2 {
  margin: 0 0 16px;
  font-size: 20px;
  letter-spacing: -0.03em;
}

h3 {
  margin: 0;
  font-size: 15px;
  color: #fff;
}

.field {
  margin-bottom: 15px;
}

label {
  display: block;
  font-size: 14px;
  color: var(--sub);
  margin-bottom: 7px;
  font-weight: 800;
}

input,
textarea,
select {
  width: 100%;
  background: var(--input);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 13px;
  padding: 12px 13px;
  font-size: 15px;
  outline: none;
  transition: 0.18s;
}

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

input::placeholder,
textarea::placeholder {
  color: #70798b;
}

input:focus,
textarea:focus,
select:focus {
  background: var(--input-focus);
  border-color: rgba(56, 189, 248, 0.95);
  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.14);
}

.hidden {
  display: none;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 13px;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 13px;
}

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

.pill {
  width: auto;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--sub);
  padding: 9px 12px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  user-select: none;
  transition: 0.18s;
}

.pill:hover {
  border-color: rgba(56, 189, 248, 0.75);
  color: #fff;
}

.pill.active {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.95), rgba(56, 189, 248, 0.78));
  color: #fff;
  border-color: transparent;
}

.btn {
  border: 0;
  border-radius: 13px;
  padding: 12px 15px;
  background: var(--panel-2);
  color: #fff;
  cursor: pointer;
  font-weight: 900;
  font-size: 14px;
  transition: 0.18s;
}

.btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.08);
}

.btn.primary {
  background: linear-gradient(135deg, var(--point), var(--point-2));
}

.btn.danger {
  background: rgba(255, 91, 110, 0.18);
  color: #ff9aa6;
  border: 1px solid rgba(255, 91, 110, 0.28);
}

.btn.success {
  background: rgba(56, 217, 150, 0.18);
  color: #9ff4ce;
  border: 1px solid rgba(56, 217, 150, 0.25);
}

.btn.small {
  padding: 8px 11px;
  font-size: 13px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--sub);
}

.generate-area {
  margin-top: 20px;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid rgba(56, 189, 248, 0.25);
  background:
    linear-gradient(135deg, rgba(139, 92, 246, 0.13), rgba(56, 189, 248, 0.08));
}

.generate-area p {
  margin: 0 0 12px;
  color: var(--sub);
  font-size: 14px;
}

.generate-main-btn {
  width: 100%;
  padding: 15px 18px;
  font-size: 15px;
}

.notice {
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.24);
  color: #dcd6ff;
  padding: 13px 14px;
  border-radius: 14px;
  font-size: 14px;
  margin: 0 0 18px;
}

.output-section {
  margin-top: 16px;
}

.output-section:first-of-type {
  margin-top: 0;
}

.output-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 9px;
}

.output-box {
  margin: 0;
  background: #0d0f15;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
  min-height: 120px;
  white-space: pre-wrap;
  word-break: break-word;
  color: #f4f4f5;
  font-size: 14.5px;
  line-height: 1.65;
  overflow-x: auto;
}

.sub-results {
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.025);
}

.sub-results summary {
  cursor: pointer;
  color: var(--sub);
  font-weight: 900;
  font-size: 14px;
}

.copy-options {
  margin-top: 18px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.035);
}

.copy-options h3 {
  margin-bottom: 10px;
}

.check-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 9px;
  margin: 8px 0;
  color: var(--sub);
  cursor: pointer;
}

.check-row input {
  width: auto;
  accent-color: var(--point-2);
}

.copy-action-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}

.hint {
  color: var(--sub);
  font-size: 13px;
  margin: 12px 0 0;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  background: #fff;
  color: #111;
  padding: 11px 16px;
  border-radius: 999px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.3);
  opacity: 0;
  pointer-events: none;
  transition: 0.22s;
  font-weight: 900;
  font-size: 14px;
  z-index: 300;
}

.toast.show {
  opacity: 1;
  bottom: 42px;
}

.advanced-library {
  margin-top: 18px;
  margin-bottom: 16px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.035);
}

.advanced-library h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.library-desc {
  margin: 0 0 14px;
  color: var(--sub);
  font-size: 13px;
}

.library-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.library-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.14);
}

.library-item strong {
  display: block;
  margin-bottom: 4px;
  font-size: 14px;
}

.library-item p {
  margin: 0;
  color: var(--sub);
  font-size: 13px;
  line-height: 1.45;
}

.library-modal {
  position: fixed;
  inset: 0;
  display: none;
  z-index: 200;
}

.library-modal.show {
  display: block;
}

.library-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
}

.library-modal-panel {
  position: relative;
  width: min(980px, calc(100% - 32px));
  max-height: calc(100vh - 48px);
  margin: 24px auto;
  padding: 22px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: rgba(15, 17, 23, 0.98);
  border: 1px solid rgba(56, 189, 248, 0.28);
  border-radius: 20px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.55);
}

.library-modal-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.library-modal-head h2 {
  margin: 4px 0 0;
  font-size: 24px;
}

.library-search {
  margin: 14px 0;
}

.library-modal-body {
  overflow-y: auto;
  padding-right: 6px;
}

.library-category {
  margin-bottom: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.025);
}

.library-category h4 {
  margin: 0 0 10px;
  font-size: 14px;
  color: var(--text);
}

.library-options {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.library-option {
  width: 100%;
  min-height: 38px;
  padding: 9px 10px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #1d212c;
  color: var(--text);
  font-size: 13px;
  font-weight: 800;
  text-align: left;
  transition: 0.18s;
  cursor: pointer;
}

.library-option:hover {
  border-color: rgba(56, 189, 248, 0.75);
}

.library-option.active {
  color: #fff;
  border-color: #22d3ee;
  background: rgba(34, 211, 238, 0.18);
}

.library-modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

@media (max-width: 980px) {
  .hero,
  .layout {
    grid-template-columns: 1fr;
  }

  .right-column .output-card {
    position: static;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .library-options {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .library-modal-panel {
    margin: 14px auto;
    max-height: calc(100vh - 28px);
  }
}

@media (max-width: 640px) {
  .app {
    width: min(100% - 24px, 1180px);
    padding-top: 18px;
  }

  .hero,
  .card {
    padding: 17px;
    border-radius: 18px;
  }

  .grid-2,
  .save-grid,
  .copy-action-grid {
    grid-template-columns: 1fr;
  }

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

  .top-actions .btn,
  .save-grid .btn {
    width: 100%;
  }

  .pill {
    font-size: 13px;
    padding: 8px 11px;
  }

  .output-head {
    align-items: flex-start;
  }

  .library-item,
  .library-options {
    grid-template-columns: 1fr;
  }

  .library-modal-actions {
    flex-direction: column;
  }
}