/* ─── Custom Properties ─── */
:root {
  --bg:           #0f1117;
  --surface:      #1a1d27;
  --surface2:     #23263a;
  --accent:       #7c3aed;
  --accent-hover: #6d28d9;
  --text:         #e2e8f0;
  --text-muted:   #8892a4;
  --border:       #2a2d3e;
  --error:        #f87171;
  --radius:       6px;
  --mono: 'Fira Code', 'Cascadia Code', 'Consolas', 'Monaco', monospace;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.5;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ─── Header ─── */
header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  height: 54px;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.logo {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* ─── Main ─── */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  max-width: 1040px;
  width: 100%;
  margin: 0 auto;
}

/* ─── Buttons ─── */
.btn,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, opacity 0.15s;
  white-space: nowrap;
  line-height: 1.4;
  font-family: var(--sans);
}

.btn:hover,
button:hover  { background: var(--accent-hover); }
button:disabled { opacity: 0.55; cursor: not-allowed; }

/* ─── Editor Card ─── */
.editor-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  flex: 1;
  width: calc(100vw - 3rem);
  margin-left: calc(50% - 50vw + 1.5rem);
  overflow: hidden;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

select {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.3rem 0.55rem;
  font-size: 0.85rem;
  font-family: var(--sans);
  cursor: pointer;
  outline: none;
}
select:focus { border-color: var(--accent); }

.char-count {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-left: auto;
  margin-right: 0.25rem;
  font-variant-numeric: tabular-nums;
}
.char-count.over { color: var(--error); }

/* ─── Editor body (line numbers + textarea side by side) ─── */
.editor-body {
  display: flex;
  flex: 1;
  overflow: hidden;
  min-height: 440px;
}

.editor-stack {
  position: relative;
  flex: 1;
  overflow: hidden;
}

.line-numbers {
  padding: 1rem 0.65rem 1rem 0.75rem;
  font-family: var(--mono);
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text-muted);
  text-align: right;
  white-space: pre;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  flex-shrink: 0;
  min-width: 2.8rem;
  background: var(--surface2);
  border-right: 1px solid var(--border);
}

textarea#content {
  position: absolute;
  inset: 0;
  background: transparent;
  color: transparent;
  caret-color: var(--text);
  border: none;
  outline: none;
  padding: 1rem;
  font-family: var(--mono);
  font-size: 0.9rem;
  line-height: 1.65;
  resize: none;
  tab-size: 2;
  overflow: auto;
  z-index: 2;
}
textarea#content::placeholder { color: var(--text-muted); }

#editor-highlight {
  position: absolute;
  inset: 0;
  margin: 0;
  padding: 1rem;
  overflow: hidden;
  pointer-events: none;
  z-index: 1;
}

#editor-highlight-code {
  font-family: var(--mono);
  font-size: 0.9rem;
  line-height: 1.65;
  white-space: pre;
  display: block;
  min-height: 100%;
}

#editor-highlight-code.hljs {
  background: transparent;
  padding: 0;
}

/* ─── Result / Error boxes ─── */
.result-box {
  margin-top: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.result-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.result-box a {
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.875rem;
  word-break: break-all;
  flex: 1;
  min-width: 0;
}

.error-box {
  margin-top: 0.9rem;
  color: var(--error);
  background: rgba(248, 113, 113, 0.08);
  border: 1px solid rgba(248, 113, 113, 0.25);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
}

.hidden { display: none !important; }

/* ─── Paste View ─── */
.paste-view {
  padding-top: 1.25rem;
  max-width: none;
  width: calc(100vw - 3rem);
  margin-left: calc(50% - 50vw + 1.5rem);
}

.paste-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  min-height: 1.5rem;
}

.paste-meta #copy-btn {
  margin-left: auto;
}

.paste-meta-actions {
  margin-left: auto;
  display: flex;
  gap: 0.4rem;
}

.meta-action {
  display: inline-flex;
  align-items: center;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.2rem 0.6rem;
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: color 0.15s, border-color 0.15s;
  font-family: var(--sans);
  white-space: nowrap;
  line-height: 1.4;
}

.meta-action:hover {
  color: var(--text);
  border-color: var(--text-muted);
  background: transparent;
}

.lang-badge {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.15rem 0.5rem;
  font-size: 0.75rem;
  font-family: var(--mono);
  color: var(--text-muted);
  text-transform: lowercase;
}

.paste-date {
  font-size: 0.78rem;
  color: var(--text-muted);
}


.meta-url-btn {
  max-width: 360px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--accent);
  font-family: var(--mono);
}

.meta-url-btn:hover {
  color: var(--text);
}

.paste-url-status {
  font-size: 0.78rem;
  color: var(--accent);
  min-width: 3.8rem;
  text-align: center;
}

#paste-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: auto;
  flex: 1;
  display: flex;
  width: calc(100vw - 3rem);
  margin-left: calc(50% - 50vw + 1.5rem);
}

#paste-content pre {
  flex: 1;
  margin: 0;
  padding: 1rem;
  overflow: visible;
}

#paste-content code {
  font-family: var(--mono);
  font-size: 0.9rem;
  line-height: 1.65;
  white-space: pre;
  color: var(--text);
  display: block;
}

#paste-content code.hljs {
  background: transparent;
  padding: 0;
}

/* ─── Not Found / Error state ─── */
.not-found {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  padding: 4rem 2rem;
  text-align: center;
  gap: 0.75rem;
}

.not-found h2 {
  font-size: 4rem;
  font-weight: 800;
  color: var(--border);
  line-height: 1;
}

.not-found p {
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

/* ─── Responsive ─── */
@media (max-width: 600px) {
  main, header { padding-left: 1rem; padding-right: 1rem; }
  .toolbar { flex-wrap: wrap; }
  .char-count { order: 3; width: 100%; margin: 0; }
}