:root {
  --bg: #ffffff;
  --text: #171717;
  --text-muted: #737373;
  --border: #e5e5e5;
  --card-bg: #ffffff;
  --accent: #171717;
  --accent-text: #ffffff;
  --danger: #dc2626;
}

body.dark-mode {
  --bg: #0a0a0a;
  --text: #ededed;
  --text-muted: #a1a1a1;
  --border: #262626;
  --card-bg: #0a0a0a;
  --accent: #ededed;
  --accent-text: #0a0a0a;
  --danger: #ef4444;
}

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

body {
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.5;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

#main-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

#main-header h1 {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* Layout Grid */
main#app {
  flex: 1;
  max-width: 960px;
  width: 100%;
  margin: 2rem auto;
  padding: 0 1rem;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 1.25rem;
}

#status {
  grid-column: 1 / -1;
  font-size: 0.75rem;
  color: var(--text-muted);
}

main#app > section:nth-of-type(1) {
  grid-column: 1;
}
main#app > section:nth-of-type(2) {
  grid-column: 1;
}
main#app > section:nth-of-type(3) {
  grid-column: 2;
  grid-row: 2 / span 2;
}

section {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  background-color: var(--card-bg);
  height: fit-content;
}

section h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

input[type="text"],
textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: transparent;
  color: var(--text);
  font-size: 0.875rem;
  margin-bottom: 0.75rem;
  outline: none;
  font-family: inherit;
}

input[type="text"]:focus,
textarea:focus {
  border-color: var(--text);
}

button {
  background-color: var(--accent);
  color: var(--accent-text);
  border: 1px solid var(--accent);
  padding: 0.45rem 0.85rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
}

button:hover {
  opacity: 0.85;
}

#daftar-tugas,
#daftar-catatan {
  list-style: none;
  padding: 0;
  margin-top: 0.75rem;
}

/* Tugas (Drag) */
#daftar-tugas li,
.tugas-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
}

#daftar-tugas li:active,
.tugas-item:active {
  cursor: grabbing;
}

/* Catatan (No Drag) */
.catatan-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  cursor: default;
}

#daftar-tugas li span,
.tugas-item span,
.catatan-item p {
  flex: 1;
  word-break: break-word;
}

#daftar-tugas li button,
.tugas-item button,
.catatan-item button {
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  margin-left: 0.25rem;
}

/* Search Box & Dropdown */
.search-box {
  position: relative;
  margin-bottom: 0.75rem;
}

.dropdown-hasil {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-top: 4px;
  list-style: none;
  z-index: 10;
  max-height: 160px;
  overflow-y: auto;
}

.dropdown-hasil li {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
}

.dropdown-hasil li:last-child {
  border-bottom: none;
}

blockquote {
  border-left: 2px solid var(--border);
  padding-left: 0.75rem;
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

footer {
  padding: 1.25rem;
  text-align: center;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: auto;
}

@media (max-width: 768px) {
  main#app {
    grid-template-columns: 1fr;
  }
  main#app > section:nth-of-type(3) {
    grid-column: 1;
    grid-row: auto;
  }
}