/* =============================================
   README Badge Builder — Styles
   ============================================= */

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

:root {
  --bg: #0D1117;
  --bg-card: #161B22;
  --bg-input: #0D1117;
  --bg-hover: #1C2128;
  --border: rgba(48, 54, 61, 0.8);
  --border-focus: rgba(88, 166, 255, 0.4);
  --primary: #58A6FF;
  --primary-dim: rgba(88, 166, 255, 0.12);
  --primary-glow: rgba(88, 166, 255, 0.25);
  --accent: #3FB950;
  --text: #E6EDF3;
  --text-dim: #8B949E;
  --text-muted: #484F58;
  --radius: 8px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --transition: 0.2s ease;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font); background: var(--bg); color: var(--text); min-height: 100vh; line-height: 1.6; }

/* Header */
.header { border-bottom: 1px solid var(--border); background: rgba(22, 27, 34, 0.9); backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 10; }
.header-inner { max-width: 1200px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon { font-size: 1.3rem; width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; background: var(--primary-dim); border-radius: var(--radius); }
.logo h1 { font-size: 1.1rem; font-weight: 700; }
.tagline { font-size: 0.75rem; color: var(--text-dim); }
.header-actions { display: flex; align-items: center; gap: 8px; }

/* Preview toggle */
.preview-toggle { display: flex; align-items: center; gap: 8px; cursor: pointer; font-size: 0.78rem; color: var(--text-dim); }
.preview-toggle input { display: none; }
.toggle-track { width: 36px; height: 20px; background: var(--text-muted); border-radius: 10px; position: relative; transition: var(--transition); }
.toggle-thumb { width: 16px; height: 16px; background: white; border-radius: 50%; position: absolute; top: 2px; left: 2px; transition: var(--transition); }
.preview-toggle input:checked ~ .toggle-track { background: var(--primary); }
.preview-toggle input:checked ~ .toggle-track .toggle-thumb { transform: translateX(16px); }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 7px 12px; font-family: var(--font); font-size: 0.8rem; font-weight: 500; border: none; border-radius: 6px; cursor: pointer; transition: all var(--transition); white-space: nowrap; }
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn-primary { background: var(--primary); color: #0D1117; font-weight: 600; }
.btn-primary:hover { box-shadow: 0 4px 12px var(--primary-glow); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--text-dim); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text); border-color: var(--primary); background: var(--primary-dim); }

/* Main Layout */
.main { max-width: 1200px; margin: 0 auto; padding: 20px; }
.layout { display: grid; grid-template-columns: 400px 1fr; gap: 24px; }

/* Builder Panel */
.section-title { font-size: 0.9rem; font-weight: 600; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 12px; }
.subsection-title { font-size: 0.82rem; font-weight: 600; color: var(--text-dim); margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.badge-count { font-size: 0.7rem; background: var(--primary-dim); color: var(--primary); padding: 1px 7px; border-radius: 10px; }

.form-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.form-group { margin-bottom: 10px; }
.form-group label { display: block; font-size: 0.72rem; font-weight: 600; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 4px; }

input[type="text"], select {
  width: 100%; padding: 7px 10px; font-family: var(--mono); font-size: 0.82rem; color: var(--text); background: var(--bg-input); border: 1px solid var(--border); border-radius: 6px; outline: none; transition: all var(--transition);
}
input:focus, select:focus { border-color: var(--border-focus); box-shadow: 0 0 0 3px var(--primary-dim); }
input::placeholder { color: var(--text-muted); }
select { cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%238B949E' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 8px center; padding-right: 26px; }

/* Color Swatches */
.color-picker-row { display: flex; flex-direction: column; gap: 6px; }
.color-swatches { display: flex; gap: 4px; flex-wrap: wrap; }
.swatch { width: 20px; height: 20px; border-radius: 4px; border: 2px solid transparent; cursor: pointer; transition: all var(--transition); }
.swatch:hover, .swatch.active { border-color: white; transform: scale(1.15); }

.form-actions-row { display: flex; gap: 8px; margin-top: 6px; }

/* Presets Grid */
.presets-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; }
.preset-btn { display: flex; align-items: center; gap: 8px; padding: 8px 10px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 6px; cursor: pointer; transition: all var(--transition); font-size: 0.78rem; color: var(--text-dim); font-family: var(--font); text-align: left; }
.preset-btn:hover { border-color: var(--primary); background: var(--primary-dim); color: var(--text); }
.preset-btn img { height: 20px; }

/* Preview Panel */
.preview-single { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; min-height: 60px; display: flex; align-items: center; justify-content: center; margin-bottom: 16px; transition: background var(--transition); }
.preview-single.dark-bg { background: #FFFFFF; }
.preview-single img { max-width: 100%; height: auto; }

/* Badge Collection */
.badge-collection { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; min-height: 80px; margin-bottom: 16px; display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-start; }
.badge-collection.dark-bg { background: #FFFFFF; }

.badge-item { position: relative; cursor: grab; transition: transform var(--transition); }
.badge-item:hover { transform: scale(1.05); }
.badge-item img { height: 22px; display: block; }
.badge-remove { position: absolute; top: -6px; right: -6px; width: 16px; height: 16px; background: #E74C3C; color: white; border: none; border-radius: 50%; font-size: 0.6rem; cursor: pointer; display: none; align-items: center; justify-content: center; line-height: 1; }
.badge-item:hover .badge-remove { display: flex; }

.empty-state { width: 100%; text-align: center; padding: 20px; color: var(--text-muted); font-size: 0.82rem; }

/* Copy Section */
.copy-section { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; }
.copy-tabs { display: flex; gap: 4px; margin-bottom: 10px; }
.copy-tab { padding: 5px 12px; font-family: var(--font); font-size: 0.78rem; font-weight: 500; color: var(--text-dim); background: transparent; border: 1px solid var(--border); border-radius: 4px; cursor: pointer; transition: all var(--transition); }
.copy-tab.active { color: var(--primary); background: var(--primary-dim); border-color: rgba(88,166,255,0.2); }
.copy-output { position: relative; }
.copy-output pre { background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: 10px; font-family: var(--mono); font-size: 0.78rem; color: var(--text-dim); overflow-x: auto; white-space: pre-wrap; word-break: break-all; max-height: 200px; }
.btn-copy { position: absolute; top: 6px; right: 6px; padding: 4px 10px; font-size: 0.72rem; }

/* Responsive */
@media (max-width: 850px) {
  .layout { grid-template-columns: 1fr; }
  .presets-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .header-inner { flex-direction: column; gap: 10px; }
}