/* Screen layout and form states for the app. Values come from tokens.css. */

[hidden] { display: none !important; }
:where(a, button, input, select, textarea, [tabindex]):focus-visible { outline: 2px solid var(--ink-strong); outline-offset: 2px; }
.ar-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Shell: nav rail + main; the rail becomes a top strip on narrow screens */
.shell { min-height: 100vh; display: flex; flex-wrap: wrap; align-items: stretch; background: var(--surface-page); }
.shell > .ar-nav { flex: 1 1 96px; width: auto; }
.shell > main { flex: 999 1 560px; min-width: 0; padding: var(--space-24) clamp(16px, 3vw, 40px) var(--space-48); }
.page { max-width: var(--content-max); margin: 0 auto; display: flex; flex-direction: column; gap: var(--space-24); }
.page-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: var(--space-12); }
.page-title { margin: 0; font-size: 28px; line-height: 1.2; font-weight: 700; letter-spacing: -0.01em; }
.page-sub { margin: 4px 0 0; font-size: 14px; color: var(--ink-secondary); }
.date-line { margin: 0 0 4px; font-size: 13px; font-weight: 500; color: var(--ink-muted); }
.steps-crumb { list-style: none; margin: 0 0 10px; padding: 0; display: flex; flex-wrap: wrap; gap: var(--space-6); font-size: 13px; color: var(--ink-muted); }
.steps-crumb .is-current { color: var(--ink-strong); font-weight: 600; }
.demo-strip { display: flex; flex-wrap: wrap; gap: var(--space-8) var(--space-16); align-items: center; padding: 10px var(--space-16); border-radius: var(--radius-sm); background: var(--warning-soft); color: var(--warning); font-size: 13px; font-weight: 500; }
.demo-strip button { margin-left: auto; }

.grid-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(210px, 100%), 1fr)); gap: var(--space-16); }
.grid-units { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); gap: var(--space-16); }
.toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-12); }

/* Two-column work area */
.split { display: flex; flex-wrap: wrap; gap: var(--space-24); align-items: flex-start; }
.split > .side { flex: 1 1 320px; max-width: 100%; }
.split > .work { flex: 999 1 480px; min-width: 0; }
.form-card > div:empty, .field > span:empty, #saved-slot:empty { display: none; }

/* Meter list */
.meter-list { list-style: none; margin: 0; padding: var(--space-8); display: flex; flex-direction: column; gap: 4px; }
.meter-btn { width: 100%; display: flex; align-items: center; gap: var(--space-12); padding: var(--space-12); border: 0; border-radius: var(--radius-sm); background: transparent; font: inherit; color: var(--ink); text-align: left; cursor: pointer; }
.meter-btn[aria-current="true"] { background: var(--surface-selected); }
.meter-icon { width: 40px; height: 40px; flex: none; border-radius: 10px; background: var(--surface-card); border: 1px solid var(--line-card); display: flex; align-items: center; justify-content: center; }
.meter-name { display: block; font-weight: 600; font-size: 14px; }
.meter-prev { display: block; font-size: 13px; color: var(--ink-muted); }
.chip-sm { flex: none; padding: 3px 10px; border-radius: var(--radius-pill); font-size: 12px; font-weight: 600; white-space: nowrap; }
.side-note { margin: 4px 0 0; padding: var(--space-12) var(--space-12) var(--space-8); border-top: 1px solid var(--line-card); font-size: 13px; color: var(--ink-muted); }
.side-head { margin: 0; padding: var(--space-12) var(--space-12) var(--space-8); font-size: 13px; font-weight: 600; color: var(--ink-muted); text-transform: uppercase; letter-spacing: 0.04em; }

/* Form */
.form-card { display: flex; flex-direction: column; gap: var(--space-20); padding: var(--space-24); }
.form-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; gap: var(--space-12); }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr)); gap: var(--space-20); }
.field { display: flex; flex-direction: column; gap: var(--space-6); }
.field > label, .field > .label { font-size: 13px; font-weight: 500; color: var(--ink-secondary); }
.field .hint { font-weight: 400; color: var(--ink-muted); }
.input { height: var(--control-lg); padding: 0 14px; border: 1px solid var(--line-control); border-radius: var(--radius-sm); font: inherit; font-size: 15px; color: var(--ink); background: var(--surface-card); }
.input-num { font-size: 17px; font-weight: 600; font-variant-numeric: tabular-nums; }
textarea.input { height: auto; padding: var(--space-10) var(--space-12); resize: vertical; }
.input[aria-invalid="true"] { border-color: var(--danger); box-shadow: 0 0 0 1px var(--danger); }
.input:disabled { background: var(--surface-sunken); color: var(--ink-secondary); }
.field-error { margin: 0; display: flex; gap: var(--space-6); align-items: flex-start; font-size: 13px; font-weight: 500; color: var(--danger); }
.field-error svg { flex: none; margin-top: 2px; }
.prev-panel { display: flex; gap: 14px; align-items: center; padding: 14px var(--space-16); border-radius: var(--radius-sm); background: var(--surface-sunken); }
.prev-panel dl { margin: 0; flex: 1; display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: var(--space-8) var(--space-16); }
.prev-panel dt { font-size: 12px; color: var(--ink-muted); }
.prev-panel dd { margin: 2px 0 0; font-size: 17px; font-weight: 700; font-variant-numeric: tabular-nums; }

.dropzone { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; padding: var(--space-16); border-radius: var(--radius-sm); border: 1px dashed var(--line-dashed); background: #FBFBFC; }
.dropzone.is-invalid { border-color: var(--danger); background: var(--surface-card); }
.dropzone img { width: 72px; height: 72px; object-fit: cover; border-radius: 10px; flex: none; }
.dropzone-text { flex: 1 1 200px; font-size: 14px; }
.dropzone-text small { display: block; font-size: 13px; color: var(--ink-muted); }

.form-actions { display: flex; flex-wrap: wrap; gap: var(--space-12); align-items: center; padding-top: var(--space-20); border-top: 1px solid var(--line-card); }
.form-actions .aside { margin-left: auto; font-size: 13px; color: var(--ink-muted); }

/* Messages */
.summary { padding: var(--space-16) var(--space-20); border-radius: var(--radius-sm); background: var(--danger-soft); border: 1px solid var(--danger-line); }
.summary-title { margin: 0 0 var(--space-8); display: flex; align-items: center; gap: var(--space-8); font-weight: 700; color: var(--danger); }
.summary ul { margin: 0; padding: 0 0 0 26px; display: flex; flex-direction: column; gap: 4px; font-size: 14px; }
.summary a { color: var(--ink); }
.banner-error { display: flex; flex-wrap: wrap; gap: var(--space-12); align-items: center; padding: 14px var(--space-16); border-radius: var(--radius-sm); background: var(--danger-soft); border: 1px solid var(--danger-line); font-size: 14px; }
.banner-error b { color: var(--danger); }
.banner-error .grow { flex: 1 1 260px; }
.banner-error button { height: 40px; padding: 0 var(--space-16); border-radius: var(--radius-sm); border: 1px solid var(--danger-line); background: var(--surface-card); font: inherit; font-size: 14px; font-weight: 600; color: var(--danger); cursor: pointer; }
.banner-ok { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-12) var(--space-16); padding: 14px var(--space-20); border-radius: var(--radius-lg); background: var(--success-soft); color: var(--success); }
.banner-ok a, .banner-ok button.link { color: var(--success); font-weight: 600; font-size: 14px; background: none; border: 0; cursor: pointer; font-family: inherit; text-decoration: underline; padding: 0; }
.banner-lock { display: flex; gap: var(--space-12); align-items: flex-start; padding: 14px var(--space-16); border-radius: var(--radius-sm); background: var(--surface-selected); color: var(--ink-strong); font-size: 14px; }
.warn { display: flex; gap: var(--space-10); align-items: flex-start; padding: var(--space-12) 14px; border-radius: var(--radius-sm); background: var(--warning-soft); color: var(--warning); font-size: 14px; }
.warn .mark { width: 22px; height: 22px; flex: none; border-radius: var(--radius-pill); background: var(--surface-card); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 13px; }

/* Dialog */
.dialog-backdrop { position: fixed; inset: 0; background: rgba(22, 22, 29, 0.4); display: flex; align-items: center; justify-content: center; padding: var(--space-16); z-index: 10; }
.dialog { width: 100%; max-width: 480px; background: var(--surface-card); border-radius: var(--radius-lg); padding: var(--space-24); display: flex; flex-direction: column; gap: var(--space-16); }
.dialog h2 { margin: 0; font-size: 20px; font-weight: 700; }
.dialog p { margin: 0; }
.dialog .actions { display: flex; flex-wrap: wrap; gap: var(--space-12); justify-content: flex-end; }

/* Sign-in (mobile app look) */
.signin { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: var(--space-24) 18px; background: var(--surface-app); color: var(--app-ink); }
.signin-card { width: 100%; max-width: 400px; display: flex; flex-direction: column; }
.signin-card img { width: 129px; height: 34px; margin-bottom: 26px; }
.signin-title { margin: 0; font-size: 30px; font-weight: 500; letter-spacing: -0.015em; }
.signin-sub { margin: 5px 0 20px; font-size: 13px; color: rgba(22, 22, 29, .55); }
.signin-hint { margin: 14px 0 0; font-size: 12px; color: rgba(22, 22, 29, .5); line-height: 1.55; }
.signin-foot { margin-top: 28px; font-size: 11px; color: rgba(22, 22, 29, .45); }

/* Empty / placeholder */
.placeholder { padding: 40px var(--space-24); text-align: center; display: flex; flex-direction: column; gap: var(--space-12); align-items: center; }
.placeholder h2 { margin: 0; font-size: 18px; }
.placeholder p { margin: 0; max-width: 460px; color: var(--ink-secondary); font-size: 14px; }

.spin { width: 18px; height: 18px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spin { animation: none; } }

/* Segmented filter: pressed state uses aria-pressed instead of a class */
.ar-seg-btn { cursor: pointer; }
.ar-seg-btn[aria-pressed="true"] { background: var(--surface-card); color: var(--ink); font-weight: 600; box-shadow: var(--shadow-segment); }