:root {
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0,0,0,0.12);
  --shadow-soft: 0 6px 18px rgba(0,0,0,0.08);

  /* Theme */
  --orange-bg: #ffcda4;
  --sidebar-bg: rgb(255, 225, 201);
  --orange-accent: #e76f51;
  --content-bg: #ffffff;

  --color-bg: #ffffff;
  --color-text: #000000;
  --color-text-muted: #555555;

  --color-accent: #ffa96e;
  --color-accent-2: #ffb37a;
  --color-accent-3: #ff8f45;

  --surface-panel: #ffefe2;
  --surface-card: #fdf8f4;

  --blue: #2a9df4;
  --blue-dark: #1e88e5;

  --font-sans: "Inter", "Segoe UI", Roboto, Arial, sans-serif;

  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;

  --max-width: 1180px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-4) var(--space-3);
  border-bottom: 1px solid #f0c8b8; /* ніжно-рожевий */
}

.brand-name {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 800;
}

.brand-name a {
  text-decoration: none;
  color: var(--text);
}

.site-nav ul {
  display: flex;
  gap: var(--space-3);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  padding: 8px 12px;
  border-radius: 8px;
  font-weight: 600;
  color: var(--text);
  background: rgba(255, 210, 200, 0.35); /* мʼякенький рожевий */
  text-decoration: none;
  transition: 0.2s ease;
}

.site-nav a:hover {
  background: rgba(255, 185, 170, 0.55);
  transform: translateY(-2px);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  height: 100%;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
}
img { display: block; max-width: 100%; }

/* Links */
a {
  color: var(--color-accent-3);
  text-decoration: none;
  font-weight: 500;
}
a:hover { opacity: 0.8; }

/* Visually hidden */
.visually-hidden {
  position: absolute !important;
  height: 1px; width: 1px;
  overflow: hidden;
  clip: rect(1px,1px,1px,1px);
  white-space: nowrap;
}

.canvas {
  width: min(1180px, 94vw);
  height: min(760px, 88vh);
  margin: 28px auto;
  background: var(--orange-bg);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: stretch;
}

.board {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 18px;
  width: 100%;
  height: 100%;
}

.sidebar {
  background: var(--sidebar-bg);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
}

.sidebar-title {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.task-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;

  max-height: 70vh;
  overflow-y: auto;
  padding-right: 6px;
}

.task {
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  transition: transform .12s ease, box-shadow .12s ease;
}

.task-link {
  display: block;
  width: 100%;
  padding: 12px 14px;
  border-radius: inherit;
  color: inherit;
}

.task:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(0,0,0,0.09);
}

.task.active {
  background: var(--orange-accent);
  color: #fff;
}

/* footer */
.sidebar-foot {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed rgba(0,0,0,0.06);
}
.hint {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 13px;
}

.content {
  background: var(--content-bg);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow-soft);
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: 14px;
}

.content-header h1 {
  margin: 0;
  font-size: 24px;
  font-weight: 800;
}

.task-desc {
  margin: 6px 0 0;
  color: var(--color-text-muted);
}

/* Controls */
.controls {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
}

.input {
  height: 44px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid #e0e0e0;
  font-size: 15px;
}

.btn {
  height: 44px;
  padding: 0 18px;
  border-radius: 10px;
  border: 1px solid var(--blue-dark);
  background: var(--blue);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}
.btn:hover { background: var(--blue-dark); }

.result-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 16px;
  height: 100%;
}

.result-area {
  background: #fff;
  border-radius: 10px;
  border: 1px solid #e8e8e8;
  padding: 18px;
  overflow: auto;
  box-shadow: var(--shadow-soft);
}
.result-area .placeholder {
  color: var(--color-text-muted);
}

/* Image box */
.image-box {
  background: #fff;
  border-radius: 10px;
  border: 1px solid #e8e8e8;
  padding: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-soft);
}
.image-box img {
  width: 100%;
  border-radius: 6px;
  object-fit: cover;
}

@media (max-width: 920px) {
  .board { grid-template-columns: 1fr; }
  .canvas { height: auto; padding: 14px; }

  .result-grid { grid-template-columns: 1fr; }
  .image-box { order: 2; }
  .result-area { order: 1; }
}