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

:root {
  --bg:        #1a1a1a;
  --surface:   #242424;
  --surface2:  #2c2c2c;
  --border:    #383838;
  --border2:   #444;
  --text:      #e8e8e8;
  --text2:     #aaa;
  --text3:     #666;
  --accent:    #2196F3;
  --accent-h:  #42a5f5;
  --green:     #4CAF50;
  --green-h:   #66BB6A;
  --red:       #f44336;
  --warn-bg:   rgba(244, 67, 54, 0.08);
  --warn-border: rgba(244, 67, 54, 0.35);
  --radius:    6px;
  --font:      'Inter', system-ui, sans-serif;
  --max-w:     680px;
}

body {
  font-family: var(--font);
  font-size: 14px;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.hidden { display: none !important; }

/* Header */
header {
  width: 100%;
  max-width: var(--max-w);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
}

.logo { font-weight: 600; font-size: 15px; flex: 1; }
.version { color: var(--text3); font-weight: 400; }

#status-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text2);
}

.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--text3);
  flex-shrink: 0;
  transition: background 0.3s;
}
#status-bar[data-state="loading"] .status-dot { background: #ff9800; animation: pulse 1.2s infinite; }
#status-bar[data-state="ready"]   .status-dot { background: var(--green); }
#status-bar[data-state="busy"]    .status-dot { background: var(--accent); animation: pulse 0.8s infinite; }
#status-bar[data-state="error"]   .status-dot { background: var(--red); }

nav { display: flex; gap: 12px; font-size: 12px; }
nav a { color: var(--text3); }
nav a:hover { color: var(--accent); text-decoration: none; }

/* Window */
.window {
  width: 100%;
  max-width: var(--max-w);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  flex: 1;
  margin: 0 16px;
}

/* Tabs */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  background: var(--surface2);
}

.tab {
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
  color: var(--text3);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 10px 20px;
  cursor: pointer;
  margin-bottom: -1px;
  transition: color 0.15s, border-color 0.15s;
}
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab:hover:not(.active) { color: var(--text2); }

/* Progress */
#progress-wrap {
  padding: 8px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface2);
}

#progress-track {
  flex: 1;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

#progress-bar {
  height: 100%;
  background: var(--green);
  border-radius: 3px;
  width: 0%;
  transition: width 0.2s ease;
}

#progress-msg {
  font-size: 11px;
  color: var(--text3);
  white-space: nowrap;
  min-width: 160px;
}

/* Panel */
.panel { padding: 20px; display: flex; flex-direction: column; gap: 14px; }

/* Fields */
.field-row { display: flex; flex-direction: column; gap: 5px; }
.field-row > label { font-size: 13px; font-weight: 500; color: var(--text); }
.hint { font-weight: 400; color: var(--text3); }

input[type="text"] {
  font-family: var(--font);
  font-size: 13px;
  color: var(--text);
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 6px 10px;
  width: 100%;
  outline: none;
  transition: border-color 0.15s;
}
input[type="text"]:focus { border-color: var(--accent); }
input[type="text"][readonly] { color: var(--text2); cursor: default; }
input.readonly-info { color: var(--text3); }

.file-row { display: flex; gap: 8px; }
.file-row input[type="text"] { flex: 1; }

/* Checkboxes */
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
  user-select: none;
}
.checkbox-label input[type="checkbox"] { width: 14px; height: 14px; cursor: pointer; accent-color: var(--accent); }
.warn-label { color: var(--red); }

/* Buttons */
.btn-primary {
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: var(--green);
  border: none;
  border-radius: var(--radius);
  padding: 8px 20px;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-primary:hover:not(:disabled) { background: var(--green-h); }
.btn-primary:disabled { background: var(--border2); color: var(--text3); cursor: not-allowed; }

.btn-secondary {
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
  color: var(--text2);
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 6px 14px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}
.btn-secondary:hover:not(:disabled) { background: var(--border); color: var(--text); }
.btn-secondary:disabled { opacity: 0.4; cursor: not-allowed; }

.action-row { display: flex; }

/* Preview card */
.preview-card {
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  background: rgba(33, 150, 243, 0.06);
  overflow: hidden;
}

.preview-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 7px 12px;
  border-bottom: 1px solid rgba(33, 150, 243, 0.12);
}
.preview-row:last-child { border-bottom: none; }

.preview-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text3);
  width: 40px;
  flex-shrink: 0;
}

.preview-value {
  font-size: 13px;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Warn box */
.warn-box {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-radius: var(--radius);
  padding: 8px 12px;
  font-size: 13px;
  color: var(--red);
}

/* Result box */
.result-box {
  border: 1px solid rgba(76, 175, 80, 0.35);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 13px;
  color: #81c784;
  background: rgba(76, 175, 80, 0.07);
}
.result-box.error {
  border-color: rgba(244, 67, 54, 0.35);
  color: #ef9a9a;
  background: rgba(244, 67, 54, 0.07);
}

/* Footer */
footer {
  width: 100%;
  max-width: var(--max-w);
  padding: 12px 16px;
  font-size: 11px;
  color: var(--text3);
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 8px;
}
.sep { color: var(--border2); }
footer a { color: var(--text3); }
footer a:hover { color: var(--accent); text-decoration: none; }

/* Credits overlay */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.dialog {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 10px;
  padding: 28px 32px;
  min-width: 300px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}

.dialog h2 { font-size: 18px; font-weight: 600; text-align: center; }

.credits-row { display: flex; gap: 20px; align-items: baseline; }
.credits-role {
  font-weight: 600;
  font-size: 12px;
  color: var(--text3);
  width: 90px;
  text-align: right;
  flex-shrink: 0;
}

.credits-studio {
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--text3);
  margin-top: 4px;
}

.dialog .btn-secondary { align-self: center; margin-top: 4px; }

/* Drag highlight */
.window.drag-over { outline: 2px solid var(--green); outline-offset: -2px; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.35; }
}

@media (max-width: 480px) {
  .window { margin: 0 8px; border-radius: 8px; }
  .panel { padding: 14px; }
  nav { display: none; }
}