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

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #242736;
  --border: #2e3147;
  --accent: #6c63ff;
  --accent2: #48c0c0;
  --text: #e2e4ef;
  --muted: #7b7f9e;
  --danger: #e05c5c;
  --radius: 10px;
  --shadow: 0 4px 18px rgba(0,0,0,.45);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 14px;
  min-height: 100vh;
}

/* ── Login ── */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 44px 40px;
  width: 340px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-logo {
  font-size: 2.4rem;
  text-align: center;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 4px;
}

.login-box h1 {
  text-align: center;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: .5px;
}

.login-subtitle {
  text-align: center;
  color: var(--muted);
  font-size: .85rem;
  margin-bottom: 8px;
}

.login-box label {
  color: var(--muted);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .8px;
  margin-bottom: 2px;
}

.login-box input {
  width: 100%;
  padding: 9px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: .95rem;
  outline: none;
  transition: border-color .2s;
  margin-bottom: 6px;
}

.login-box input:focus { border-color: var(--accent); }

.login-box button {
  margin-top: 8px;
  width: 100%;
  padding: 10px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .2s;
}

.login-box button:hover { opacity: .85; }

.alert {
  background: rgba(224,92,92,.18);
  border: 1px solid var(--danger);
  border-radius: 6px;
  color: #f08080;
  padding: 8px 12px;
  font-size: .85rem;
}

.alert-ok {
  background: rgba(72,192,192,.15);
  border-color: var(--accent2);
  color: var(--accent2);
}

/* ── Página cambio de contraseña ── */
.pw-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 56px);
}

.pw-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 40px;
  width: 380px;
  max-width: 95vw;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.pw-box h2 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.pw-box label {
  display: block;
  color: var(--muted);
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .7px;
  margin-bottom: 4px;
}

.pw-box input {
  width: 100%;
  padding: 9px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: .95rem;
  outline: none;
  transition: border-color .2s;
  margin-bottom: 8px;
}

.pw-box input:focus { border-color: var(--accent); }

.pw-box button {
  width: 100%;
  padding: 10px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .2s;
  margin-top: 4px;
}

.pw-box button:hover { opacity: .85; }

/* ── Topbar ── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.topbar-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: .4px;
  flex: 1;
}

.topbar-user {
  color: var(--muted);
  font-size: .85rem;
}

.topbar-logout {
  color: var(--muted);
  font-size: .82rem;
  text-decoration: none;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 5px;
  transition: color .2s, border-color .2s;
}

.topbar-logout:hover { color: var(--danger); border-color: var(--danger); }

/* ── Board ── */
.board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 24px;
  height: calc(100vh - 56px);
  overflow-x: auto;
}

/* ── Column ── */
.column {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  min-height: 200px;
  overflow: hidden;
  transition: background .2s;
}

.column.drag-over { background: var(--surface2); }

.column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px 10px;
  border-bottom: 1px solid var(--border);
}

.column-label {
  font-weight: 700;
  font-size: .9rem;
  letter-spacing: .3px;
}

.column-count {
  background: var(--surface2);
  color: var(--muted);
  border-radius: 20px;
  padding: 1px 8px;
  font-size: .78rem;
  font-weight: 600;
}

.cards {
  flex: 1;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow-y: auto;
}

/* ── Card ── */
.card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  cursor: grab;
  transition: box-shadow .15s, transform .15s, opacity .15s;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.card:active { cursor: grabbing; }
.card.dragging { opacity: .4; }
.card:hover { box-shadow: 0 2px 12px rgba(108,99,255,.25); }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-source {
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--accent2);
  background: rgba(72,192,192,.1);
  border-radius: 4px;
  padding: 1px 6px;
}

.btn-archive {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: .85rem;
  line-height: 1;
  padding: 2px 4px;
  border-radius: 4px;
  transition: color .15s;
}

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

.card-title {
  font-weight: 600;
  font-size: .92rem;
  line-height: 1.35;
}

.card-desc {
  font-size: .8rem;
  color: var(--muted);
  line-height: 1.4;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.card-date {
  font-size: .7rem;
  color: var(--border);
  margin-top: 2px;
}

/* ── Botón Nueva tarea (topbar) ── */
.btn-new-task {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 5px 14px;
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .2s;
  margin-right: auto;
}
.btn-new-task:hover { opacity: .82; }

/* ── Botón + en header de columna ── */
.btn-col-add {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 5px;
  width: 22px;
  height: 22px;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color .15s, border-color .15s;
}
.btn-col-add:hover { color: var(--accent); border-color: var(--accent); }

/* ── Botones de acción en la tarjeta ── */
.card-actions {
  display: flex;
  gap: 4px;
  align-items: center;
}

.btn-edit {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: .9rem;
  padding: 2px 4px;
  border-radius: 4px;
  line-height: 1;
  transition: color .15s;
}
.btn-edit:hover { color: var(--accent); }

/* ── Modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn .15s ease;
}
.modal-overlay.hidden { display: none; }

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

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 440px;
  max-width: 95vw;
  box-shadow: var(--shadow);
  animation: slideUp .15s ease;
}

@keyframes slideUp {
  from { transform: translateY(16px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px 12px;
  border-bottom: 1px solid var(--border);
  font-weight: 700;
  font-size: 1rem;
}

.modal-close {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 2px 6px;
  border-radius: 4px;
  transition: color .15s;
}
.modal-close:hover { color: var(--danger); }

#task-form {
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

#task-form label {
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .7px;
  color: var(--muted);
  margin-bottom: 2px;
}

.required { color: var(--accent); }

#task-form input,
#task-form select,
#task-form textarea {
  width: 100%;
  padding: 8px 11px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: .92rem;
  font-family: inherit;
  outline: none;
  resize: vertical;
  transition: border-color .2s;
}
#task-form input:focus,
#task-form select:focus,
#task-form textarea:focus { border-color: var(--accent); }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding-top: 8px;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 8px 20px;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .2s;
}
.btn-primary:hover { opacity: .85; }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }

.btn-secondary {
  background: none;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 16px;
  font-size: .9rem;
  cursor: pointer;
  transition: color .2s, border-color .2s;
}
.btn-secondary:hover { color: var(--text); border-color: var(--text); }

/* ── Responsive (stacks below 900px) ── */
@media (max-width: 900px) {
  .board {
    grid-template-columns: 1fr;
    height: auto;
  }
  .form-row { grid-template-columns: 1fr; }
}