/* Reset + primitives shared by every view. */
* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: var(--fs-md);
  line-height: 1.45;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
  user-select: none;
}

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, select, textarea {
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-sm);
  padding: 7px 10px;
  outline: none;
  transition: border-color var(--t-fast) var(--ease);
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); }
::placeholder { color: var(--text-3); }
/* Native number steppers clash with the design — hide them, keep typing. */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
input[type="number"] { -moz-appearance: textfield; appearance: textfield; }
input[type="color"] {
  padding: 2px; width: 34px; height: 32px; cursor: pointer;
  background: var(--raised);
}

h1 { font-size: var(--fs-title); font-weight: 700; letter-spacing: -0.02em; }

/* Buttons — hover lift, press spring, ripple (JS adds .ripple spans),
   focus ring, and a .loading spinner state for async actions. */
.btn {
  position: relative; overflow: hidden;
  display: inline-flex; align-items: center; gap: 7px; justify-content: center;
  padding: 8px 14px;
  border-radius: var(--r-sm);
  font-weight: 600; font-size: var(--fs-md);
  transition: background var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease),
              transform var(--t-fast) var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(0.96); transition-duration: 60ms; }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn.primary { background: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-hover);
                     box-shadow: 0 4px 16px color-mix(in srgb, var(--accent) 35%, transparent); }
.btn.ghost {
  border: 1px solid var(--border-strong); color: var(--text-2);
}
.btn.ghost:hover { background: var(--raised); color: var(--text); }
.btn.success { border: 1px solid var(--success); color: var(--success); }
.btn.success:hover { background: rgba(61, 214, 140, 0.10);
                     box-shadow: 0 4px 14px rgba(61, 214, 140, 0.18); }
.btn.danger { border: 1px solid var(--danger); color: var(--danger); }
.btn.danger:hover { background: color-mix(in srgb, var(--danger) 10%, transparent); }
.btn:disabled { opacity: 0.45; cursor: default; }
.btn:disabled:hover { background: none; transform: none; box-shadow: none; }
.btn.icon { padding: 8px; width: 34px; }

.btn .ripple {
  position: absolute; border-radius: 50%;
  background: rgba(255, 255, 255, 0.28);
  transform: scale(0); pointer-events: none;
  animation: ripple 480ms var(--ease) forwards;
}
.btn.ghost .ripple, .btn.success .ripple { background: rgba(255, 255, 255, 0.10); }
@keyframes ripple { to { transform: scale(2.6); opacity: 0; } }

.btn.loading { color: transparent !important; pointer-events: none; }
.btn.loading > * { visibility: hidden; }
.btn.loading::after {
  content: ""; position: absolute; inset: 0; margin: auto;
  width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.30); border-top-color: #fff;
  animation: spin 700ms linear infinite;
}
.btn.ghost.loading::after, .btn.success.loading::after {
  border-color: var(--border-strong); border-top-color: var(--text-2);
}
@keyframes spin { to { transform: rotate(360deg); } }

.muted { color: var(--text-2); }
.faint { color: var(--text-3); }

/* Segmented control (Day / Week / Month) */
.segmented {
  display: inline-flex; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--r-sm); padding: 2px;
}
.segmented button {
  padding: 6px 14px; border-radius: 5px; color: var(--text-2); font-weight: 600;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.segmented button:hover { color: var(--text); }
.segmented button.active { background: var(--accent); color: #fff; }

/* Switch */
.switch { display: inline-flex; align-items: center; gap: 8px; color: var(--text-2); cursor: pointer; }
.switch input { display: none; }
.switch .track {
  width: 34px; height: 20px; border-radius: 10px; background: var(--raised);
  border: 1px solid var(--border-strong); position: relative;
  transition: background var(--t-fast) var(--ease);
}
.switch .track::after {
  content: ""; position: absolute; top: 2px; left: 2px; width: 14px; height: 14px;
  border-radius: 50%; background: var(--text-2);
  transition: transform var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.switch input:checked + .track { background: var(--accent-dim); border-color: var(--accent); }
.switch input:checked + .track::after { transform: translateX(14px); background: var(--accent); }

/* Toast */
#toast-root { position: fixed; bottom: 20px; right: 20px; display: flex;
              flex-direction: column; gap: 8px; z-index: 60; }
.toast {
  background: var(--overlay); border: 1px solid var(--border-strong);
  border-radius: var(--r-md); padding: 10px 14px; box-shadow: var(--shadow-2);
  font-size: var(--fs-md); max-width: 380px;
  animation: toast-in var(--t-med) var(--ease);
}
.toast.warn { border-color: var(--warning); }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } }

/* Modal */
#modal-root:empty { display: none; }
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(6, 8, 11, 0.62); z-index: 50;
  display: flex; align-items: center; justify-content: center;
  animation: fade-in var(--t-fast) var(--ease);
}
.modal {
  background: var(--overlay); border: 1px solid var(--border-strong);
  border-radius: var(--r-lg); box-shadow: var(--shadow-2);
  width: 420px; max-width: calc(100vw - 48px); padding: var(--s5);
  animation: modal-in var(--t-med) var(--ease);
}
.modal h2 { font-size: var(--fs-lg); font-weight: 700; margin-bottom: var(--s4); }
.modal .field { margin-bottom: var(--s3); }
.modal .field label { display: block; font-size: var(--fs-sm); color: var(--text-2); margin-bottom: 4px; }
.modal .field input, .modal .field select { width: 100%; }
.modal .row { display: flex; gap: var(--s3); }
.modal .row .field { flex: 1; }
.modal .actions { display: flex; justify-content: flex-end; gap: var(--s2); margin-top: var(--s4); }
@keyframes fade-in { from { opacity: 0; } }
@keyframes modal-in { from { opacity: 0; transform: translateY(10px) scale(0.98); } }

/* Empty state */
.empty {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: var(--s2); padding: var(--s6); color: var(--text-3); text-align: center;
}
.empty .hint { font-size: var(--fs-sm); }