/* ── RESET & BASE ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── LIGHT THEME (default) ── */
:root,
[data-theme="light"] {
  --bg:           #f5f4f0;
  --surface:      #ffffff;
  --surface2:     #f0efe9;
  --border:       #e0ddd5;
  --border-strong:#b8b4a8;
  --text:         #1a1917;
  --text-muted:   #8a8780;
  --text-faint:   #c2bfb8;
  --doing-bg:     #fff8e7;
  --doing-border: #e8c84a;
  --done-bg:      #eaf5ee;
  --done-border:  #6bc87a;
  --danger:       #e03535;
  --shadow:       rgba(0, 0, 0, 0.06);
  --overlay-bg:   rgba(26, 25, 23, 0.4);
}

/* ── DARK THEME ── */
[data-theme="dark"] {
  --bg:           #111110;
  --surface:      #1c1b19;
  --surface2:     #242320;
  --border:       #2e2c29;
  --border-strong:#4a4742;
  --text:         #e8e6e1;
  --text-muted:   #7a7772;
  --text-faint:   #3e3c39;
  --doing-bg:     #1e1a0a;
  --doing-border: #c8a820;
  --done-bg:      #0d1a10;
  --done-border:  #4a9e58;
  --danger:       #e05050;
  --shadow:       rgba(0, 0, 0, 0.3);
  --overlay-bg:   rgba(0, 0, 0, 0.6);
}

/* ── VARIABLES CONSTANTES ── */
:root {
  --radius: 4px;
  --mono: 'DM Mono', monospace;
  --sans: 'DM Sans', sans-serif;
}

html { font-size: 14px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 300;
  min-height: 100vh;
  line-height: 1.5;
  transition: background 0.2s, color 0.2s;
}

/* ── HEADER ── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 32px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background 0.2s, border-color 0.2s;
}

.logo {
  font-family: var(--mono);
  font-size: 1rem;
  letter-spacing: -0.02em;
  font-weight: 500;
}

.logo span {
  color: var(--text-muted);
  font-weight: 300;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ── FONT SIZE CONTROL ── */
.font-size-control {
  display: flex;
  align-items: center;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.font-size-control .btn-icon {
  border: none;
  border-radius: 0;
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 500;
  width: 28px;
  height: 30px;
}

.font-size-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  min-width: 26px;
  text-align: center;
  user-select: none;
  letter-spacing: 0.02em;
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  padding: 0 2px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.header-divider {
  width: 1px;
  height: 20px;
  background: var(--border);
  flex-shrink: 0;
}

/* ── THEME TOGGLE ── */
.btn-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s;
}

.btn-icon:hover {
  border-color: var(--border-strong);
  color: var(--text);
  background: var(--surface2);
}

/* ── LAYOUT ── */
.app {
  display: flex;
  height: calc(100vh - 57px);
  overflow: hidden;
}

/* ── SIDEBAR ── */
.sidebar {
  width: 220px;
  min-width: 220px;
  border-right: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: background 0.2s, border-color 0.2s;
}

.sidebar-header {
  padding: 20px 16px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}

.sidebar-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.projects-list {
  overflow-y: auto;
  flex: 1;
  padding: 8px;
}

.project-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.1s;
  gap: 6px;
  border: 1px solid transparent;
}

.project-item:hover { background: var(--surface2); }

.project-item.active {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.project-name {
  font-size: 0.85rem;
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.project-count {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-faint);
  background: var(--surface2);
  padding: 1px 5px;
  border-radius: 20px;
  flex-shrink: 0;
}

.project-item.active .project-count {
  background: rgba(128, 128, 128, 0.2);
  color: var(--bg);
  opacity: 0.6;
}

.delete-project-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-faint);
  font-size: 1rem;
  line-height: 1;
  padding: 0 1px;
  border-radius: 2px;
  opacity: 0;
  transition: opacity 0.1s, color 0.1s;
  flex-shrink: 0;
}

.project-item:hover .delete-project-btn { opacity: 1; }
.project-item.active .delete-project-btn { color: var(--bg); opacity: 0.5; }
.delete-project-btn:hover { color: var(--danger) !important; opacity: 1 !important; }

/* ── MAIN ── */
.main {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.board-header {
  padding: 20px 28px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.2s, border-color 0.2s;
}

.board-title {
  font-size: 1.15rem;
  font-weight: 400;
  letter-spacing: -0.02em;
}

.board-meta {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* ── KANBAN ── */
.kanban {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  flex: 1;
  overflow: hidden;
}

.kanban-col {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  overflow: hidden;
  background: var(--bg);
  transition: background 0.2s, border-color 0.2s;
}

.kanban-col:last-child { border-right: none; }

.col-header {
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
  transition: background 0.2s, border-color 0.2s;
}

.col-title {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.col-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.todo-dot   { background: var(--border-strong); }
.doing-dot  { background: var(--doing-border); }
.done-dot   { background: var(--done-border); }

.col-count {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-faint);
}

.col-body {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* ── TASK CARD ── */
.task-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  cursor: default;
  position: relative;
  transition: border-color 0.15s, box-shadow 0.15s, background 0.2s;
  animation: cardIn 0.2s ease;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.task-card:hover {
  border-color: var(--border-strong);
  box-shadow: 0 2px 10px var(--shadow);
}

.task-card.doing {
  border-left: 3px solid var(--doing-border);
  background: var(--doing-bg);
}

.task-card.done {
  border-left: 3px solid var(--done-border);
  background: var(--done-bg);
  opacity: 0.85;
}

.task-card.done .task-title {
  text-decoration: line-through;
  color: var(--text-muted);
}

.task-title {
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.task-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin-bottom: 10px;
}

.task-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4px;
}

.task-moves {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.move-btn {
  font-family: var(--mono);
  font-size: 0.62rem;
  padding: 2px 7px;
  border-radius: 2px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.1s;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.move-btn:hover {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.delete-task-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-faint);
  font-size: 0.85rem;
  transition: color 0.1s;
  padding: 2px 4px;
  border-radius: 2px;
}

.delete-task-btn:hover { color: var(--danger); }

/* ── EMPTY STATE ── */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-faint);
  font-size: 0.8rem;
  font-family: var(--mono);
  letter-spacing: 0.05em;
}

.no-project {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  color: var(--text-faint);
}

.no-project-icon {
  font-size: 2.5rem;
  opacity: 0.3;
}

.no-project p {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
}

/* ── BUTTONS ── */
.btn {
  font-family: var(--mono);
  font-size: 0.72rem;
  padding: 7px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: all 0.1s;
  letter-spacing: 0.03em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn:hover {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.btn-primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.btn-primary:hover { opacity: 0.75; }

/* ── ADD TASK TRIGGER ── */
.add-task-trigger {
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 10px;
  text-align: center;
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 0.7rem;
  cursor: pointer;
  transition: all 0.1s;
  letter-spacing: 0.05em;
  background: transparent;
  width: 100%;
}

.add-task-trigger:hover {
  border-color: var(--border-strong);
  color: var(--text-muted);
  background: var(--surface);
}

/* ── MODALS ── */
.overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay-bg);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.15s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  padding: 28px;
  width: 380px;
  max-width: 90vw;
  animation: slideUp 0.2s ease;
  box-shadow: 0 20px 60px var(--shadow);
  transition: background 0.2s;
}

@keyframes slideUp {
  from { transform: translateY(8px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

.modal-title {
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.field label {
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.field input,
.field textarea {
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 9px 11px;
  outline: none;
  transition: border-color 0.1s, background 0.2s, color 0.2s;
  width: 100%;
  resize: none;
}

.field input:focus,
.field textarea:focus {
  border-color: var(--border-strong);
}

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

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }