:root {
  --bg: #eff4f8;
  --bg-soft: #ffffff;
  --text: #0f2433;
  --muted: #5d7080;
  --steel: #24465f;
  --orange: #ff7a1a;
  --green: #2bba73;
  --danger: #d64545;
  --line: #d5e0e8;
  --shadow: 0 16px 40px rgba(16, 37, 55, 0.12);
}

:root[data-theme="dark"] {
  --bg: #122536;
  --bg-soft: #183249;
  --text: #e9f1f6;
  --muted: #95adbf;
  --steel: #0d1c2a;
  --orange: #ffa14f;
  --green: #49d28b;
  --danger: #ff6f6f;
  --line: #2e4c64;
  --shadow: 0 18px 44px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Outfit", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 20%, rgba(255, 122, 26, 0.11) 0%, rgba(255, 122, 26, 0) 36%),
    radial-gradient(circle at 86% 10%, rgba(43, 186, 115, 0.13) 0%, rgba(43, 186, 115, 0) 34%),
    linear-gradient(145deg, var(--bg), color-mix(in srgb, var(--bg) 70%, var(--steel) 30%));
  min-height: 100vh;
}

h1,
h2,
h3,
p {
  margin: 0;
}

.shell {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.stack-xl {
  display: grid;
  gap: 1.5rem;
}

.stack-lg {
  display: grid;
  gap: 1rem;
}

.stack-md {
  display: grid;
  gap: 0.75rem;
}

.stack-sm {
  display: grid;
  gap: 0.5rem;
}

.hidden {
  display: none !important;
}

.bg-orb {
  position: fixed;
  width: 36vmax;
  aspect-ratio: 1;
  border-radius: 999px;
  pointer-events: none;
  z-index: -1;
  filter: blur(68px);
  opacity: 0.44;
}

.bg-orb-left {
  left: -12vmax;
  top: 18vh;
  background: color-mix(in srgb, var(--orange) 70%, transparent 30%);
  animation: floatA 10s ease-in-out infinite alternate;
}

.bg-orb-right {
  right: -12vmax;
  top: -4vmax;
  background: color-mix(in srgb, var(--green) 60%, transparent 40%);
  animation: floatB 12s ease-in-out infinite alternate;
}

@keyframes floatA {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(26px);
  }
}

@keyframes floatB {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-20px);
  }
}

.topbar {
  padding: 1.5rem 0 1rem;
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
}

.brand-kicker {
  font-family: "Space Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.73rem;
  color: var(--muted);
}

h1 {
  font-size: clamp(1.75rem, 2.2vw, 2.5rem);
  line-height: 1.05;
  margin-top: 0.2rem;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.theme-picker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.95rem;
}

select,
input,
button {
  font: inherit;
}

select,
input {
  width: 100%;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-soft) 88%, var(--steel) 12%);
  color: var(--text);
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
}

.panel {
  background: color-mix(in srgb, var(--bg-soft) 88%, transparent 12%);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.1rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.auth-panel {
  animation: popIn 0.55s ease;
}

@keyframes popIn {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.auth-grid {
  margin-top: 1rem;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.auth-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
  background: color-mix(in srgb, var(--bg-soft) 96%, transparent 4%);
}

label span {
  display: inline-block;
  margin-bottom: 0.35rem;
  font-size: 0.87rem;
  color: var(--muted);
}

.btn {
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 0.64rem 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.02);
}

.btn.primary {
  background: var(--orange);
  color: #ffffff;
}

.btn.success {
  background: var(--green);
  color: #ffffff;
}

.btn.ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}

.btn.danger {
  background: color-mix(in srgb, var(--danger) 16%, transparent 84%);
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 42%, transparent 58%);
}

.hint {
  margin-top: 0.9rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.metric {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.8rem;
  background: color-mix(in srgb, var(--steel) 12%, var(--bg-soft) 88%);
}

.metric strong {
  display: block;
  font-size: 1.45rem;
}

.metric span {
  color: var(--muted);
  font-size: 0.9rem;
}

.panel-head p {
  color: var(--muted);
  margin-top: 0.25rem;
}

.habit-form {
  display: grid;
  grid-template-columns: 2fr 1.2fr 0.9fr auto;
  gap: 0.75rem;
  align-items: end;
}

.habit-form-extended {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.habit-form-extended .full-width {
  grid-column: 1 / -1;
}

.grid-two {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1rem;
}

.habit-headline {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 0.8rem;
}

.mode-switch {
  display: inline-flex;
  padding: 0.25rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-soft) 90%, transparent 10%);
}

.mode-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 0.38rem 0.72rem;
  border-radius: 999px;
  cursor: pointer;
}

.mode-btn.active {
  background: var(--orange);
  color: #fff;
}

.habit-card {
  border: 1px solid var(--line);
  border-radius: 13px;
  padding: 0.8rem;
  display: grid;
  gap: 0.7rem;
  background: color-mix(in srgb, var(--bg-soft) 92%, transparent 8%);
}

.habit-card.compact {
  gap: 0.45rem;
}

.habit-meta {
  color: var(--muted);
  font-size: 0.9rem;
}

.habit-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.habit-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.habit-head {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 0.75rem;
}

.tag {
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 999px;
  padding: 0.15rem 0.5rem;
  border: 1px solid currentColor;
}

.matrix {
  display: grid;
  grid-template-columns: repeat(14, minmax(0, 1fr));
  gap: 0.2rem;
}

.matrix-wide {
  grid-template-columns: repeat(20, minmax(0, 1fr));
}

.square {
  aspect-ratio: 1;
  border-radius: 3px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 88%, var(--steel) 12%);
}

.square.done {
  border-color: transparent;
}

.inline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.account-line {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.45rem 0;
  border-bottom: 1px dashed var(--line);
}

.account-line:last-child {
  border-bottom: 0;
}

.archive-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.6rem 0.65rem;
}

.archive-item p {
  color: var(--muted);
  margin-top: 0.2rem;
  font-size: 0.85rem;
}

.stats-dashboard {
  display: grid;
  gap: 0.8rem;
}

.stats-kpi-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.inner-panel {
  padding: 0.8rem;
  box-shadow: none;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 1rem;
  transform: translateX(-50%);
  background: var(--steel);
  color: #ffffff;
  padding: 0.65rem 0.95rem;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, #ffffff 20%, transparent 80%);
  box-shadow: var(--shadow);
}

@media (max-width: 940px) {
  .auth-grid,
  .grid-two {
    grid-template-columns: 1fr;
  }

  .habit-form,
  .habit-form-extended {
    grid-template-columns: 1fr 1fr;
  }

  .habit-grid,
  .stats-kpi-grid {
    grid-template-columns: 1fr;
  }

  .metrics-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .habit-form {
    grid-template-columns: 1fr;
  }

  .habit-form-extended {
    grid-template-columns: 1fr;
  }

  .topbar {
    align-items: start;
    flex-direction: column;
  }

  .habit-headline {
    flex-direction: column;
    align-items: start;
  }
}