:root {
  --bg: #0a0a0a;
  --panel: #141414;
  --panel-2: #1c1c1c;
  --border: #262626;
  --text: #e5e5e5;
  --text-dim: #a3a3a3;
  --text-mute: #737373;
  --accent: #22c55e;
  --accent-2: #16a34a;
  --blue: #3b82f6;
  --red: #ef4444;
  --yellow: #eab308;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Sukhumvit Set", "IBM Plex Sans Thai", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-2); }

header {
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--panel);
}

header h1 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

header h1 span { color: var(--accent); }

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
}

h2 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
}

/* Project cards (index) */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.project-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  cursor: pointer;
  transition: all 0.15s;
  display: block;
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.project-card .name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
}

.project-card .desc {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.project-card .stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.project-card .stat {
  text-align: center;
}

.project-card .stat .num {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
}

.project-card .stat .label {
  font-size: 11px;
  color: var(--text-mute);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Project page header */
.proj-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.proj-header .back-link {
  font-size: 13px;
  color: var(--text-mute);
  margin-bottom: 6px;
  display: block;
}

.proj-header .week-nav {
  display: flex;
  gap: 8px;
  align-items: center;
}

button {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 7px 14px;
  border-radius: 7px;
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
}

button:hover { border-color: var(--accent); }

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #0a0a0a;
  font-weight: 600;
}

button.primary:hover { background: var(--accent-2); border-color: var(--accent-2); }

/* Metrics cards */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.metric-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}

.metric-card .label {
  font-size: 11px;
  color: var(--text-mute);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.metric-card .value {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.metric-card .sub {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 4px;
}

/* Week calendar */
.week-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
  margin-bottom: 16px;
}

.day-col {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  min-height: 380px;
  display: flex;
  flex-direction: column;
}

.day-col.today {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.day-head {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.day-head .dow {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-mute);
}

.day-head .dom {
  font-size: 15px;
  font-weight: 700;
}

.day-head .add-btn {
  background: transparent;
  border: 1px dashed var(--border);
  color: var(--text-mute);
  font-size: 16px;
  width: 24px;
  height: 24px;
  padding: 0;
  border-radius: 5px;
  line-height: 1;
}

.day-head .add-btn:hover { color: var(--accent); border-color: var(--accent); }

.day-metrics {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-dim);
  display: flex;
  justify-content: space-between;
}

.day-metrics .mv { color: var(--text); font-weight: 600; }
.day-metrics .mc { color: var(--accent); font-weight: 600; }

.day-body {
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
  overflow-y: auto;
}

.task {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--blue);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 12px;
  cursor: pointer;
  position: relative;
}

.task:hover { border-color: var(--accent); }

.task.done { opacity: 0.5; }
.task.done .title { text-decoration: line-through; }

.task .title {
  font-weight: 600;
  margin-bottom: 3px;
  word-break: break-word;
  padding-right: 18px;
}

.task .channel {
  display: inline-block;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--border);
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.task .check {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 14px;
  height: 14px;
  border-radius: 3px;
  border: 1px solid var(--border);
  cursor: pointer;
}

.task.done .check { background: var(--accent); border-color: var(--accent); }

.channel-fb { border-left-color: #2563eb; }
.channel-pantip { border-left-color: #06b6d4; }
.channel-reddit { border-left-color: #f97316; }
.channel-ih { border-left-color: #6366f1; }
.channel-linkedin { border-left-color: #0a66c2; }
.channel-platform { border-left-color: #a855f7; }
.channel-x { border-left-color: #000000; box-shadow: inset 3px 0 0 #fff; }
.channel-yt { border-left-color: var(--red); }
.channel-blog { border-left-color: var(--yellow); }
.channel-pr { border-left-color: #ec4899; }
.channel-other { border-left-color: var(--text-mute); }

/* Modal */
.modal-bg {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}

.modal-bg.open { display: flex; }

.modal {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  width: 100%;
  max-width: 480px;
}

.modal h3 { margin-bottom: 16px; }

.field { margin-bottom: 14px; }
.field label {
  display: block;
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.field input, .field select, .field textarea {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 12px;
  border-radius: 7px;
  font-size: 14px;
  font-family: inherit;
}

.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.field textarea { resize: vertical; min-height: 80px; }

.modal-actions {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-top: 20px;
}

.modal-actions .group { display: flex; gap: 8px; }

.danger {
  background: transparent;
  border: 1px solid var(--red);
  color: var(--red);
}

.danger:hover { background: var(--red); color: white; border-color: var(--red); }

.empty {
  color: var(--text-mute);
  font-size: 12px;
  text-align: center;
  padding: 16px 8px;
}

@media (max-width: 1000px) {
  .week-grid { grid-template-columns: 1fr; }
  .day-col { min-height: auto; }
}