:root {
  --bg: #f6f8fc;
  --surface: #ffffff;
  --text: #273043;
  --muted: #718096;
  --blue: #1d6ef2;
  --blue-soft: #eaf2ff;
  --border: #e5eaf2;
  --shadow: 0 18px 45px rgba(31, 47, 75, .08);
  --radius: 8px;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Inter, Arial, sans-serif; color: var(--text); background: var(--bg); }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
.sidebar { position: fixed; inset: 0 auto 0 0; width: 270px; background: var(--surface); border-right: 1px solid var(--border); padding: 24px; display: flex; flex-direction: column; gap: 28px; }
.logo { display: flex; align-items: center; gap: 12px; font-size: 18px; }
.logo span, .brand-mark { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 8px; background: var(--blue); color: #fff; font-weight: 800; }
nav { display: grid; gap: 8px; }
nav a { padding: 13px 14px; border-radius: 8px; color: #566176; font-weight: 700; }
nav a.active, nav a:hover { background: var(--blue-soft); color: var(--blue); }
.user-box { margin-top: auto; padding: 16px; background: #f8fafc; border: 1px solid var(--border); border-radius: var(--radius); display: grid; gap: 4px; }
.user-box small, small, .topbar p, .empty { color: var(--muted); }
.main { margin-left: 270px; padding: 28px; min-height: 100vh; }
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; gap: 16px; }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: 30px; margin-bottom: 5px; }
h2 { font-size: 20px; }
.btn { border: 0; border-radius: 8px; padding: 13px 18px; background: #eef2f7; color: #263246; font-weight: 800; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; min-height: 46px; }
.btn.primary { background: var(--blue); color: #fff; box-shadow: 0 12px 24px rgba(29, 110, 242, .2); }
.btn.ghost { background: #fff; border: 1px solid var(--border); }
.btn.full { width: 100%; }
.btn.mini { min-height: 34px; padding: 8px 10px; font-size: 13px; margin-right: 6px; }
.panel, .stats article, .big-action, .visual-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.panel { padding: 22px; }
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-bottom: 18px; }
.stats article { padding: 22px; display: grid; gap: 8px; }
.stats strong { font-size: 34px; }
.action-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-bottom: 18px; }
.big-action { padding: 24px; font-size: 22px; font-weight: 900; display: grid; gap: 6px; }
.big-action span { font-size: 14px; color: var(--muted); font-weight: 600; }
.big-action.blue { background: var(--blue); color: #fff; }
.big-action.blue span { color: rgba(255,255,255,.82); }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.visual-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 16px; }
.visual-grid.gallery { grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
.visual-card { padding: 12px; display: grid; gap: 10px; }
.visual-card img { width: 100%; aspect-ratio: 1/1; object-fit: cover; border-radius: 8px; background: #edf2f7; }
.split, .workspace, .preview-layout { display: grid; grid-template-columns: minmax(320px, 520px) 1fr; gap: 22px; align-items: start; }
.workspace { grid-template-columns: minmax(380px, 620px) 1fr; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.form-grid h2, .form-grid .wide { grid-column: 1 / -1; }
.form-grid.compact { max-width: 720px; }
label { display: grid; gap: 7px; color: #4a5568; font-weight: 800; font-size: 14px; }
input, textarea, select { width: 100%; border: 1px solid var(--border); background: #fff; color: var(--text); border-radius: 8px; padding: 12px 13px; min-height: 46px; }
textarea { min-height: 118px; resize: vertical; }
.check { display: flex; align-items: center; gap: 10px; }
.check input { width: auto; min-height: auto; }
.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; min-width: 620px; }
th, td { text-align: left; padding: 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: #667085; font-size: 13px; }
td small { display: block; margin-top: 4px; }
.swatch { width: 26px; height: 26px; display: inline-block; border-radius: 6px; border: 1px solid var(--border); margin-right: 5px; vertical-align: middle; }
.template-list { display: grid; gap: 12px; }
.template-list article { padding: 15px; border: 1px solid var(--border); border-radius: 8px; display: grid; gap: 5px; }
.template-thumb { width: 100%; max-width: 220px; aspect-ratio: 4 / 5; object-fit: cover; border-radius: 8px; border: 1px solid var(--border); }
.template-logo-thumb { width: 96px; max-height: 72px; object-fit: contain; background: #111827; border-radius: 8px; padding: 8px; }
.actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.actions form { margin: 0; }
.template-workbench { max-width: 1100px; }
.template-edit-form { display: grid; gap: 18px; }
.template-stage { position: relative; width: min(760px, 100%); aspect-ratio: 4 / 5; overflow: hidden; border-radius: 8px; border: 1px solid var(--border); background: #101828; user-select: none; touch-action: none; }
.template-stage img { width: 100%; height: 100%; object-fit: cover; display: block; opacity: .92; }
.template-element { position: absolute; display: grid; place-items: center; min-width: 72px; min-height: 32px; border: 2px solid rgba(29, 110, 242, .95); background: rgba(29, 110, 242, .18); color: #fff; font-weight: 900; text-shadow: 0 1px 8px rgba(0,0,0,.6); cursor: move; border-radius: 6px; box-shadow: 0 10px 30px rgba(0,0,0,.18); }
.template-element[data-key="logo"] { border-color: rgba(255,255,255,.95); background: rgba(17,24,39,.35); }
.template-element[data-key="cta"] { border-color: rgba(20,184,166,.95); background: rgba(20,184,166,.22); }
.template-element[data-key="line"] { border-color: rgba(255,255,255,.95); background: rgba(255,255,255,.16); min-height: 14px; font-size: 12px; }
.template-element.dragging { z-index: 10; transform: scale(1.015); }
.template-meta { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.template-meta article { border: 1px solid var(--border); border-radius: 8px; padding: 14px; background: #f8fafc; display: grid; gap: 5px; }
.template-meta span { color: var(--muted); font-size: 14px; }
.advanced-box { border: 1px solid var(--border); border-radius: 8px; padding: 12px; background: #f8fafc; }
.advanced-box summary { cursor: pointer; font-weight: 800; color: var(--muted); }
.advanced-box label { margin-top: 12px; }
.preview-frame { background: #dfe7f2; border-radius: 8px; padding: 18px; box-shadow: var(--shadow); }
.preview-frame img { width: 100%; max-height: 78vh; object-fit: contain; display: block; border-radius: 8px; }
.filters { display: flex; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.filters select, .filters input { max-width: 220px; }
.alert { padding: 14px 16px; border-radius: 8px; margin-bottom: 18px; background: #ecfdf5; color: #047857; border: 1px solid #a7f3d0; }
.alert.error { background: #fef2f2; color: #b42318; border-color: #fecaca; }
.auth-body { min-height: 100vh; display: grid; place-items: center; padding: 24px; background: linear-gradient(135deg, #eef4ff, #fff); }
.auth-card { width: min(440px, 100%); background: #fff; border: 1px solid var(--border); border-radius: 8px; box-shadow: var(--shadow); padding: 30px; display: grid; gap: 16px; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
.pick { border: 1px solid var(--border); background: #fff; border-radius: 8px; padding: 10px 12px; cursor: pointer; }
.pick:hover { border-color: var(--blue); color: var(--blue); }
@media (max-width: 980px) {
  .sidebar { position: static; width: auto; flex-direction: row; align-items: center; flex-wrap: wrap; }
  .sidebar nav { display: flex; overflow: auto; }
  .user-box { margin-left: auto; margin-top: 0; }
  .main { margin-left: 0; padding: 20px; }
  .split, .workspace, .preview-layout, .stats, .action-row { grid-template-columns: 1fr; }
  .template-meta { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .topbar { align-items: stretch; flex-direction: column; }
  .form-grid { grid-template-columns: 1fr; }
  .sidebar { padding: 16px; }
}