:root {
  --black: #000000;
  --white: #ffffff;
  --gray: #888888;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Mono", monospace;
  color: var(--black);
  background: var(--white);
  position: relative;
}

.app {
  position: relative;
  z-index: 1;
  width: 100%;
  margin: 0;
  padding: 48px 48px 56px;
  display: flex;
  flex-direction: column;
  gap: 32px;
  min-height: 100vh;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  border-bottom: 4px solid var(--black);
  padding-bottom: 24px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 0.7rem;
  color: var(--gray);
  margin: 0 0 8px;
  font-weight: 400;
}

h1 {
  font-family: "Space Mono", monospace;
  font-size: clamp(2rem, 4vw, 3.5rem);
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.subtitle {
  margin: 12px 0 0;
  color: var(--gray);
  max-width: 520px;
  line-height: 1.4;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.api-field {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 3px solid var(--black);
  padding: 10px 14px;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--gray);
  flex: 1 1 260px;
}

.api-field span {
  white-space: nowrap;
}

.api-field input {
  flex: 1;
  border: none;
  outline: none;
  font-family: "Space Mono", monospace;
  font-size: 0.85rem;
  color: var(--black);
  background: transparent;
  letter-spacing: 0.08em;
  text-transform: none;
  padding: 4px 0;
}

.api-field input::placeholder {
  color: var(--gray);
}

.api-field:focus-within {
  box-shadow: inset 4px 4px 0 var(--black);
}

.btn {
  border: 3px solid var(--black);
  font-size: 0.85rem;
  padding: 14px 24px;
  border-radius: 0;
  cursor: pointer;
  transition: all 0.1s ease;
  font-weight: 700;
  font-family: "Space Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.btn.primary {
  background: var(--black);
  color: var(--white);
  box-shadow: none;
}

.btn.primary:hover {
  background: var(--white);
  color: var(--black);
}

.btn.ghost {
  background: var(--white);
  color: var(--black);
}

.btn.ghost:hover {
  background: var(--black);
  color: var(--white);
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 var(--black);
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.main {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0;
}

.panel {
  background: var(--white);
  border: 4px solid var(--black);
  border-radius: 0;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 70vh;
  box-shadow: none;
}

.panel:first-child {
  border-right: 2px solid var(--black);
}

.panel:last-child {
  border-left: 2px solid var(--black);
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid var(--black);
  padding-bottom: 12px;
}

.panel h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.status {
  font-size: 0.75rem;
  color: var(--black);
  font-weight: 700;
}

.chip {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--white);
  background: var(--black);
  padding: 6px 12px;
  border-radius: 0;
  font-weight: 700;
}

.editor {
  flex: 1;
  width: 100%;
  border: 2px solid var(--black);
  border-radius: 0;
  padding: 16px;
  font-size: 0.9rem;
  font-family: "Space Mono", monospace;
  background: var(--white);
  line-height: 1.7;
  resize: none;
  color: var(--black);
}

.editor::placeholder {
  color: var(--gray);
  opacity: 1;
}

.editor:focus {
  outline: none;
  border-color: var(--black);
  box-shadow: inset 4px 4px 0 var(--black);
}

.panel-foot {
  color: var(--gray);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  border-top: 1px solid var(--black);
  padding-top: 12px;
}

.preview {
  flex: 1;
  border-radius: 0;
  padding: 18px;
  border: 2px solid var(--black);
  background: var(--white);
  overflow-y: auto;
}

.preview h1,
.preview h2,
.preview h3 {
  font-family: "Space Mono", monospace;
  margin-top: 0.2em;
  color: var(--black);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.preview h1 {
  font-size: 1.8rem;
  border-bottom: 4px solid var(--black);
  padding-bottom: 8px;
}

.preview h2 {
  font-size: 1.4rem;
  border-bottom: 2px solid var(--black);
  padding-bottom: 6px;
}

.preview h3 {
  font-size: 1.1rem;
}

.preview p,
.preview li {
  color: var(--black);
  line-height: 1.7;
  font-size: 0.9rem;
}

.preview code {
  background: var(--black);
  color: var(--white);
  padding: 2px 6px;
  border-radius: 0;
  font-size: 0.85rem;
}

.preview pre {
  background: var(--black);
  color: var(--white);
  padding: 16px;
  border-radius: 0;
  overflow-x: auto;
  border: none;
}

.footer {
  color: var(--gray);
  font-size: 0.75rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  border-top: 4px solid var(--black);
  padding-top: 24px;
  letter-spacing: 0.05em;
}

.footer p {
  margin: 4px 0;
}

@media (max-width: 900px) {
  .header {
    flex-direction: column;
    align-items: flex-start;
  }

  .panel {
    min-height: 420px;
  }

  .panel:first-child {
    border-right: 4px solid var(--black);
    border-bottom: 2px solid var(--black);
  }

  .panel:last-child {
    border-left: 4px solid var(--black);
    border-top: 2px solid var(--black);
  }
}

@media (max-width: 600px) {
  .app {
    padding: 24px 16px 32px;
    border-left: none;
    border-right: none;
  }

  .actions {
    width: 100%;
  }

  .api-field {
    width: 100%;
  }

  .btn {
    flex: 1;
    justify-content: center;
  }

  h1 {
    font-size: 1.8rem;
  }
}