:root {
  --green: #268b45;
  --dark: #183d2b;
  --background: #f2f6f2;
  --border: #dce5dd;
  --text: #203027;
  --muted: #657168;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--text);
  background: var(--background);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.5;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 16px max(20px, calc((100% - 1300px) / 2));
  background: var(--dark);
  color: white;
}

.brand {
  color: white;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.2rem;
}

.top-link { color: white; text-decoration: none; }
.container, .editor-container { max-width: 1300px; margin: auto; padding: 32px 20px; }

.hero {
  padding: clamp(30px, 6vw, 76px);
  border-radius: 24px;
  background: linear-gradient(135deg, #e5f3e7, white);
  border: 1px solid var(--border);
}

.hero h1 { margin: 8px 0; font-size: clamp(2.4rem, 6vw, 4.5rem); line-height: 1.08; }
.hero p:not(.eyebrow) { max-width: 650px; color: #58665c; }
.eyebrow { color: var(--green); font-weight: 800; letter-spacing: .12em; font-size: .8rem; }

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border: 0;
  border-radius: 10px;
  background: var(--green);
  color: white;
  text-decoration: none;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
}

.button:hover { background: var(--dark); }
.button.secondary { background: white; color: var(--dark); border: 1px solid var(--border); }
.button.secondary:hover { background: #e9f2ea; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.feature, .cta, .tool-panel, .canvas-panel {
  background: white;
  border: 1px solid var(--border);
  border-radius: 16px;
}

.feature { padding: 22px; }
.feature h2 { font-size: 1.1rem; }
.feature p, .cta p { color: var(--muted); }
.feature-icon { font-size: 1.8rem; }
.cta { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 24px; }
.cta h2 { margin-bottom: 4px; }
footer { padding: 24px; color: var(--muted); text-align: center; font-size: .85rem; }

/* Éditeur graphique */
.editor-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
}

.editor-heading h1 { margin: 4px 0; }
.editor-heading p { color: var(--muted); }

.page-switch { display: flex; gap: 6px; }
.tab {
  padding: 10px 18px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: white;
  color: var(--text);
  font: inherit;
  cursor: pointer;
}
.tab.active { background: var(--dark); color: white; border-color: var(--dark); }

.editor-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.tool-panel { padding: 18px; }
.tool-section + .tool-section { border-top: 1px solid var(--border); margin-top: 20px; padding-top: 16px; }
.tool-section h2, .export-panel h2 { margin: 0 0 12px; font-size: 1.05rem; }

.tool-button {
  display: block;
  width: 100%;
  padding: 10px 12px;
  margin: 7px 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.tool-button:hover { border-color: var(--green); background: #f2f8f3; }
.tool-button.danger { color: #a12626; }
.file-button { display: block; }
.small { color: var(--muted); font-size: .8rem; }

.tool-section label:not(.tool-button) {
  display: block;
  margin: 12px 0 5px;
  font-size: .88rem;
  font-weight: 650;
}

.tool-section input:not([type="color"]):not([type="range"]),
.tool-section select {
  width: 100%;
  min-height: 38px;
  padding: 8px;
  border: 1px solid #cbd7cd;
  border-radius: 7px;
  background: white;
  color: var(--text);
  font: inherit;
}

.tool-section input[type="color"] { width: 100%; height: 38px; }
.tool-section input[type="range"] { width: 100%; accent-color: var(--green); }
.two-buttons { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

.canvas-panel { min-width: 0; padding: 18px; }

.canvas-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  font-size: .8rem;
  font-weight: 750;
  color: var(--muted);
}

.canvas-viewport {
  width: 100%;
  padding: 22px;
  overflow: auto;
  border: 1px dashed #c4d1c6;
  border-radius: 12px;
  background-color: #edf1ed;
  background-image: radial-gradient(#d1d9d2 1px, transparent 1px);
  background-size: 16px 16px;
}

.canvas-container {
  margin: auto !important;
  box-shadow: 0 5px 22px #00000016;
}

#card-canvas { display: block; max-width: 100%; }

.canvas-help { color: var(--muted); font-size: .85rem; }

.export-panel {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.export-buttons { display: flex; flex-wrap: wrap; gap: 10px; }
#editor-status { overflow-wrap: anywhere; color: var(--green); }
#editor-status.error { color: #b42318; }

@media (max-width: 950px) {
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .editor-layout { grid-template-columns: 240px minmax(0, 1fr); }
  .canvas-viewport { padding: 10px; }
}

@media (max-width: 680px) {
  .editor-layout { grid-template-columns: 1fr; }
  .editor-heading, .cta { align-items: stretch; flex-direction: column; }
  .page-switch { align-self: flex-start; }
  .feature-grid { grid-template-columns: 1fr; }
  .canvas-viewport { padding: 5px; }
  .export-buttons { flex-direction: column; }
  .export-buttons .button { width: 100%; }
}