:root{
  --bg: #0b1020;
  --panel: rgba(255,255,255,0.06);
  --panel2: rgba(255,255,255,0.08);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.65);
  --muted2: rgba(255,255,255,0.45);
  --border: rgba(255,255,255,0.10);
  --shadow: 0 14px 50px rgba(0,0,0,0.35);
  --radius: 16px;
  --radius2: 12px;
  --accent: #6d28d9;
  --danger: #ef4444;
  --ok: #22c55e;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background:
    radial-gradient(1200px 800px at 10% -10%, rgba(109,40,217,0.35), transparent 55%),
    radial-gradient(900px 700px at 90% 0%, rgba(34,197,94,0.20), transparent 50%),
    radial-gradient(900px 900px at 70% 120%, rgba(59,130,246,0.18), transparent 55%),
    var(--bg);
  color: var(--text);
}

.app-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 18px 20px;
  position: sticky;
  top:0;
  backdrop-filter: blur(14px);
  background: rgba(11,16,32,0.55);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.brand{ display:flex; align-items:center; gap:12px; }
.brand__mark{
  width:42px; height:42px; border-radius: 14px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.10), rgba(255,255,255,0.02)),
    linear-gradient(135deg, rgba(109,40,217,0.85), rgba(59,130,246,0.55));
  box-shadow: 0 10px 30px rgba(109,40,217,0.25);
  border: 1px solid rgba(255,255,255,0.12);
}
.brand__title{ font-weight: 720; letter-spacing: 0.2px; }
.brand__subtitle{ font-size: 12px; color: var(--muted); margin-top: 2px; }

.app{ padding: 18px 18px 44px; }

.board{
  display:grid;
  grid-template-columns: repeat(4, minmax(240px, 1fr));
  gap: 14px;
  align-items: start;
  max-width: 1280px;
  margin: 0 auto;
}

@media (max-width: 1080px){
  .board{ grid-template-columns: repeat(2, minmax(240px, 1fr)); }
}
@media (max-width: 640px){
  .board{ grid-template-columns: 1fr; }
  .app-header{ gap: 12px; }
}

.column{
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow:hidden;
}
.column__header-group{
  display:flex;
  align-items:center;
  gap: 12px;
}

.column__header{
  display:flex;
  align-items:center;
  justify-content: space-between;
  padding: 12px 12px;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
}
.column__title{ font-weight: 650; letter-spacing: 0.2px; }
.column__add-btn {
  height: 28px;
  width: 28px;
  cursor: pointer;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
  color: var(--text);
}
.column__dropzone{
  padding: 12px;
  min-height: 240px;
  display:flex;
  flex-direction: column;
  gap: 10px;
}
.column__dropzone.is-over{
  outline: 2px dashed rgba(255,255,255,0.25);
  outline-offset: -6px;
  background: rgba(109,40,217,0.06);
}

.pill{
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  height: 28px;
  min-width: 28px;
  border: 1px solid var(--border);
  color: var(--muted);
  background: rgba(255,255,255,0.03);
}
.pill--done{
  border-color: rgba(34,197,94,0.35);
  color: rgba(34,197,94,0.95);
  background: rgba(34,197,94,0.07);
}

.btn{
  border: 1px solid var(--border);
  color: var(--text);
  background: rgba(255,255,255,0.06);
  padding: 10px 12px;
  border-radius: 12px;
  cursor:pointer;
  font-weight: 630;
  letter-spacing: 0.1px;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
}
.btn:hover{ transform: translateY(-1px); background: rgba(255,255,255,0.09); }
.btn:active{ transform: translateY(0px); }
.btn--primary{
  background: linear-gradient(135deg, rgba(109,40,217,0.95), rgba(59,130,246,0.55));
  border-color: rgba(255,255,255,0.18);
}
.btn--primary:hover{ background: linear-gradient(135deg, rgba(109,40,217,1), rgba(59,130,246,0.65)); }
.btn--ghost{ background: transparent; }
.btn--danger{ color: rgba(239,68,68,0.95); border-color: rgba(239,68,68,0.35); }
.btn--danger:hover{ background: rgba(239,68,68,0.09); }

.icon-btn{
  width: 38px; height: 38px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  cursor:pointer;
  display:grid;
  place-items:center;
}
.icon-btn:hover{ background: rgba(255,255,255,0.08); }

.card{
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  background: rgba(255,255,255,0.06);
  box-shadow: 0 12px 30px rgba(0,0,0,0.18);
  overflow:hidden;
  cursor: grab;
}
.card:active{ cursor: grabbing; }
.card.is-dragging{
  opacity: 0.75;
  transform: rotate(0.2deg);
}
.card__bar{ height: 6px; background: var(--accent); }
.card__body{ padding: 10px 10px 10px; }
.card__top{
  display:flex;
  align-items:flex-start;
  justify-content: space-between;
  gap: 10px;
}
.card__title{
  font-weight: 700;
  line-height: 1.2;
  margin: 0;
  font-size: 14px;
}
.card__meta{
  display:flex;
  gap: 8px;
  align-items:center;
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
}
.tag{
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
}
.tag--high{ border-color: rgba(239,68,68,0.45); color: rgba(239,68,68,0.95); background: rgba(239,68,68,0.08); }
.tag--medium{ border-color: rgba(245,158,11,0.45); color: rgba(245,158,11,0.95); background: rgba(245,158,11,0.08); }
.tag--low{ border-color: rgba(34,197,94,0.45); color: rgba(34,197,94,0.95); background: rgba(34,197,94,0.08); }
.tag--due-soon{ border-color: rgba(59,130,246,0.45); color: rgba(147,197,253,0.95); background: rgba(59,130,246,0.08); }
.tag--overdue{ border-color: rgba(239,68,68,0.55); color: rgba(254,202,202,0.95); background: rgba(239,68,68,0.10); }

.card__actions{
  display:flex;
  gap: 8px;
  align-items:center;
}
.mini-btn{
  width: 34px; height: 34px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  cursor:pointer;
  display:grid;
  place-items:center;
}
.mini-btn:hover{ background: rgba(255,255,255,0.08); }
.mini-btn--done{
  border-color: rgba(34,197,94,0.35);
  color: rgba(34,197,94,0.95);
}
.mini-btn--trash{
  border-color: rgba(239,68,68,0.35);
  color: rgba(239,68,68,0.95);
}

.modal{
  width: min(720px, calc(100vw - 24px));
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 0;
  background: rgba(15,21,40,0.92);
  color: var(--text);
  box-shadow: var(--shadow);
}
.modal::backdrop{ background: rgba(0,0,0,0.55); }
.modal-backdrop{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 50;
}
.modal[open]{ z-index: 60; }

.modal__form{ display:flex; flex-direction: column; }
.modal__header{
  display:flex;
  align-items:center;
  justify-content: space-between;
  padding: 14px 14px 10px;
  border-bottom: 1px solid var(--border);
}
.modal__title{ font-weight: 750; letter-spacing: 0.2px; }
.modal__body{ padding: 14px; }
.modal__footer{
  display:flex;
  align-items:center;
  justify-content: space-between;
  padding: 12px 14px 14px;
  border-top: 1px solid var(--border);
  gap: 10px;
  flex-wrap: wrap;
}
.modal__footer-left, .modal__footer-right{ display:flex; gap: 10px; align-items:center; }

.grid{
  display:grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.grid__full{ grid-column: 1 / -1; }
@media (max-width: 640px){
  .grid{ grid-template-columns: 1fr; }
}

.field__label{ font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.field__help{ font-size: 12px; color: var(--muted2); margin-top: 6px; }
.req{ color: rgba(239,68,68,0.95); }

.input{
  width:100%;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.05);
  color: var(--text);
  padding: 10px 10px;
  border-radius: 12px;
  outline: none;
}
.input:focus{
  border-color: rgba(109,40,217,0.55);
  box-shadow: 0 0 0 4px rgba(109,40,217,0.18);
}
.textarea{ resize: vertical; }
.input--color{ padding: 6px 8px; height: 42px; }

.details{ display:flex; flex-direction: column; gap: 12px; }
.details__row{
  display:grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 12px;
}
.details__label{ color: var(--muted); font-size: 12px; padding-top: 2px; }
.details__value{ font-weight: 620; }
.details__value--pre{ white-space: pre-wrap; color: var(--text); font-weight: 520; }
.color-chip{
  display:inline-block;
  width: 12px; height: 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.35);
  margin-right: 8px;
  vertical-align: middle;
}

.app-footer{
  max-width: 1280px;
  margin: 14px auto 20px;
  padding: 0 18px;
}
.hint{ color: var(--muted); font-size: 12px; }

/* Auth screen */
.auth-screen{
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.auth-card{
  width: min(400px, 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.04));
  box-shadow: var(--shadow);
  padding: 28px 24px;
}
.auth-card__brand{
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}
.auth-tabs{
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.auth-tab{
  padding: 10px 16px;
  border: none;
  background: transparent;
  color: var(--muted);
  font-weight: 620;
  cursor: pointer;
  border-radius: var(--radius2);
  transition: color 120ms ease, background 120ms ease;
}
.auth-tab:hover{ color: var(--text); background: rgba(255,255,255,0.04); }
.auth-tab--active{
  color: var(--text);
  background: rgba(255,255,255,0.06);
}
.auth-message{
  padding: 10px 12px;
  border-radius: var(--radius2);
  font-size: 13px;
  margin-bottom: 16px;
}
.auth-message--error{
  border: 1px solid rgba(239,68,68,0.4);
  background: rgba(239,68,68,0.1);
  color: rgba(254,202,202,0.95);
}
.auth-message--success{
  border: 1px solid rgba(34,197,94,0.4);
  background: rgba(34,197,94,0.1);
  color: rgba(187,247,208,0.95);
}
.auth-form .field{ margin-bottom: 14px; }
.auth-form__password-help{ margin-top: 4px; }
.auth-form__actions{ margin-top: 20px; }
.btn--full{ width: 100%; }
.app-screen{ min-height: 100vh; display: flex; flex-direction: column; }