:root {
  --bg-work: #4c80ad;
  --bg-short: #5f8ea2;
  --bg-long: #6f7fa6;
  --bg-active: var(--bg-work);
  --text-strong: rgba(255, 255, 255, 0.96);
  --text-soft: rgba(255, 255, 255, 0.72);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text-strong);
  background: var(--bg-active);
  transition: background 420ms ease;
}

.page-bg {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.14), transparent 30%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0));
  pointer-events: none;
}

.app-logo {
  box-shadow:
    0 10px 24px rgba(10, 16, 28, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.16);
}

.preset-tab,
.session-tab {
  background: transparent;
  color: rgba(255, 255, 255, 0.82);
  transition:
    transform 180ms ease,
    background-color 180ms ease,
    color 180ms ease,
    box-shadow 180ms ease;
}

.preset-tab.active,
.session-tab.active {
  background: rgba(0, 0, 0, 0.12);
  color: white;
  box-shadow: 0 10px 25px rgba(10, 16, 28, 0.08);
}

.color-swatch {
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease;
}

.color-swatch:hover {
  transform: translateY(-1px);
}

.color-swatch.selected {
  border-color: rgba(255, 255, 255, 0.9);
  box-shadow:
    0 0 0 2px rgba(255, 255, 255, 0.16),
    inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.timer-pop {
  transition:
    opacity 220ms ease,
    transform 220ms ease,
    text-shadow 220ms ease;
  text-shadow: 0 12px 35px rgba(0, 0, 0, 0.08);
}

.timer-pop.switching {
  opacity: 0.68;
  transform: translateY(4px);
}

.start-button {
  box-shadow:
    0 14px 30px rgba(10, 16, 28, 0.14),
    0 4px 10px rgba(255, 255, 255, 0.18);
}

.start-button:hover {
  box-shadow:
    0 18px 36px rgba(10, 16, 28, 0.18),
    0 6px 14px rgba(255, 255, 255, 0.2);
}

.progress-shell {
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.1),
    rgba(255, 255, 255, 0.03)
  );
  box-shadow:
    inset 0 1px 1px rgba(255, 255, 255, 0.14),
    inset 0 -1px 1px rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(10px);
}

.progress-fill {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.92),
    rgba(255, 255, 255, 0.78)
  );
  box-shadow:
    0 0 12px rgba(255, 255, 255, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.goal-card {
  padding: 1.1rem 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 1.75rem;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.11),
    rgba(255, 255, 255, 0.06)
  );
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.15),
    0 14px 36px rgba(10, 16, 28, 0.08);
  backdrop-filter: blur(14px);
}

.goal-ring-wrap {
  position: relative;
  width: 110px;
  height: 110px;
  flex-shrink: 0;
}

.goal-ring {
  width: 110px;
  height: 110px;
  transform: rotate(-90deg);
}

.goal-ring-track,
.goal-ring-fill {
  fill: none;
  stroke-width: 10;
}

.goal-ring-track {
  stroke: rgba(255, 255, 255, 0.12);
}

.goal-ring-fill {
  stroke: rgba(255, 255, 255, 0.96);
  stroke-linecap: round;
  stroke-dasharray: 289;
  stroke-dashoffset: 289;
  transition:
    stroke-dashoffset 360ms ease,
    filter 220ms ease;
  filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.18));
}

.goal-ring-center {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}

.goal-ring-value {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  padding: 1.25rem;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 12, 20, 0.24);
  backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 260ms ease;
}

.modal-panel {
  position: relative;
  z-index: 1;
  width: min(100%, 860px);
  max-height: min(88vh, 760px);
  overflow: auto;
  padding: clamp(1.4rem, 2vw, 2rem);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 2rem;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.16),
    rgba(255, 255, 255, 0.09)
  );
  box-shadow:
    0 36px 100px rgba(10, 16, 28, 0.26),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(22px);
  opacity: 0;
  transform: translateY(18px) scale(0.97);
  transition:
    opacity 300ms ease,
    transform 300ms ease;
}

.modal-panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 9rem;
  border-radius: 2rem 2rem 0 0;
  background: radial-gradient(
    circle at top center,
    rgba(255, 255, 255, 0.12),
    transparent 60%
  );
  pointer-events: none;
}

.modal-overlay.open .modal-backdrop {
  opacity: 1;
}

.modal-overlay.open .modal-panel {
  opacity: 1;
  transform: translateY(0) scale(1);
}

button {
  transition:
    transform 180ms ease,
    background-color 180ms ease,
    box-shadow 180ms ease,
    opacity 180ms ease;
}

button:hover {
  transform: translateY(-1px);
}

button.tap-pop {
  animation: tap-pop 280ms ease;
}

@keyframes tap-pop {
  0% {
    transform: scale(1);
  }

  35% {
    transform: scale(0.9);
  }

  65% {
    transform: scale(1.04);
  }

  100% {
    transform: scale(1);
  }
}

.task-item.completed .task-text {
  color: rgba(255, 255, 255, 0.48);
  text-decoration: line-through;
}

.task-item.completed .task-check {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: inset 0 0 0 5px rgba(80, 116, 150, 0.95);
}

.toast-visible {
  opacity: 1;
  transform: translateY(0);
}

.confetti-layer {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.confetti-piece {
  position: absolute;
  top: -12%;
  width: 10px;
  height: 18px;
  border-radius: 999px;
  opacity: 0.9;
  animation: confetti-fall linear forwards;
}

@keyframes confetti-fall {
  from {
    transform: translate3d(0, 0, 0) rotate(0deg);
  }

  to {
    transform: translate3d(var(--drift), 115vh, 0) rotate(560deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}