:root {
  --bg: #000000;
  --fg: #ffffff;
  --muted: #888888;
  --border: #333333;
  --border-focus: #ffffff;
  --error: #ff4444;
  --success: #00ff66;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background-color: var(--bg);
  color: var(--fg);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 14px;
  line-height: 1.5;
}

body {
  padding: 24px;
  max-width: 1400px;
  margin: 0 auto;
}

.main-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.layout-column {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

@media (min-width: 1024px) {
  .main-layout {
    grid-template-columns: 1fr 1fr;
  }
}

header {
  border-bottom: 2px double var(--muted);
  padding-bottom: 12px;
  margin-bottom: 24px;
}

header h1 {
  margin: 0;
  font-size: 2rem;
  letter-spacing: 1px;
}

.subtitle {
  margin: 4px 0 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

h2 {
  font-size: 1.1rem;
  margin: 0 0 16px 0;
  color: var(--fg);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.section {
  border: 1px solid var(--border);
  padding: 20px;
  margin-bottom: 20px;
}

.grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 600px) {
  .grid-2col {
    grid-template-columns: 1fr;
  }
}

label {
  display: block;
  margin-bottom: 6px;
  font-weight: bold;
}

input[type="text"],
input[type="password"],
textarea {
  width: 100%;
  background-color: #000000;
  color: #ffffff;
  border: 1px solid var(--border);
  padding: 10px;
  font-family: inherit;
  font-size: 14px;
  outline: none;
}

input[type="text"]:focus,
input[type="password"]:focus,
textarea:focus {
  border-color: var(--border-focus);
}

.checkbox-container {
  display: flex;
  align-items: center;
  margin-top: 10px;
}

.checkbox-container input[type="checkbox"] {
  margin: 0 8px 0 0;
  accent-color: #ffffff;
  cursor: pointer;
}

.checkbox-label {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
}

.button-group {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
}

button {
  background-color: #000000;
  color: #ffffff;
  border: 1px solid #666666;
  padding: 8px 16px;
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: background-color 0.1s, border-color 0.1s;
}

button:hover {
  border-color: #ffffff;
}

button:active {
  background-color: #222222;
}

button:disabled {
  color: #444444;
  border-color: #222222;
  cursor: not-allowed;
  background-color: #000000;
}

.url-preview-container {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--border);
  font-size: 0.9rem;
}

.url-preview-container span {
  color: var(--muted);
  margin-right: 8px;
}

#url-preview {
  color: #ffffff;
  text-decoration: underline;
}

#url-preview.disabled-link {
  color: var(--muted);
  text-decoration: none;
  pointer-events: none;
}

textarea.dragover {
  border-style: dashed;
  border-color: var(--border-focus);
  background-color: #111111;
}

textarea {
  min-height: 280px;
  resize: vertical;
}

/* Metadata Panel */
.meta-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  row-gap: 8px;
  column-gap: 20px;
}

.meta-item {
  display: contents;
}

.meta-label {
  color: var(--muted);
  font-weight: bold;
}

.meta-val {
  word-break: break-all;
}

/* Log Box */
.log {
  white-space: pre-wrap;
  word-break: break-all;
  border: 1px solid var(--border);
  background-color: #000000;
  padding: 12px;
  min-height: 150px;
  max-height: 300px;
  overflow-y: auto;
  font-size: 0.9rem;
  color: var(--fg);
}

.log-line {
  margin-bottom: 4px;
}

.log-line.error {
  color: var(--error);
}

.log-line.success {
  color: var(--success);
}

.log-line.system {
  color: var(--muted);
}

footer {
  text-align: center;
  margin-top: 40px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
  color: var(--muted);
  font-size: 0.85rem;
}