/* Solarized palette; the dark set applies with the system theme. */
:root {
    --base03: #002b36;
    --base02: #073642;
    --base01: #586e75;
    --base00: #657b83;
    --base0: #839496;
    --base1: #93a1a1;
    --base2: #eee8d5;
    --base3: #fdf6e3;
    --yellow: #b58900;
    --orange: #cb4b16;
    --red: #dc322f;
    --magenta: #d33682;
    --violet: #6c71c4;
    --blue: #268bd2;
    --cyan: #2aa198;
    --green: #859900;

    --bg: var(--base3);
    --bg2: var(--base2);
    --fg: var(--base00);
    --fg-strong: var(--base01);
    --muted: var(--base1);
    --line: var(--base2);
    --radius: 0.5rem;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: var(--base03);
        --bg2: var(--base02);
        --fg: var(--base0);
        --fg-strong: var(--base1);
        --muted: var(--base01);
        --line: var(--base02);
    }
}

* {
    box-sizing: border-box;
}

html {
    font-size: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: system-ui, sans-serif;
    line-height: 1.4;
    -webkit-tap-highlight-color: transparent;
}

h1, h2, h3 {
    color: var(--fg-strong);
    margin: 0 0 0.5em;
    font-weight: 600;
}

h2 {
    font-size: 1.15rem;
}

h3 {
    font-size: 1rem;
}

a {
    color: var(--blue);
}

code, .mono {
    font-family: ui-monospace, monospace;
    font-size: 0.9em;
}

.app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.tabs {
    position: sticky;
    top: 0;
    z-index: 5;
    display: flex;
    background: var(--bg2);
    border-bottom: 0.0625rem solid var(--line);
}

.tab {
    flex: 1;
    padding: 0.8em 0.25em;
    text-align: center;
    background: none;
    border: 0;
    border-bottom: 0.2rem solid transparent;
    color: var(--fg);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

.tab.active {
    color: var(--blue);
    border-bottom-color: var(--blue);
}

main {
    flex: 1;
    width: 100%;
    max-width: 60rem;
    margin: 0 auto;
    padding: 1rem;
}

.stack > * + * {
    margin-top: 1rem;
}

.panel {
    background: var(--bg2);
    border-radius: var(--radius);
    padding: 1rem;
}

.row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.row.between {
    justify-content: space-between;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(12rem, 1fr));
    gap: 0.75rem;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 0.2em;
    min-width: 0;
}

.field.wide {
    grid-column: 1 / -1;
}

.field > span {
    font-size: 0.8rem;
    color: var(--muted);
}

input, select, textarea {
    font: inherit;
    color: var(--fg-strong);
    background: var(--bg);
    border: 0.0625rem solid var(--muted);
    border-radius: 0.35rem;
    padding: 0.5em 0.6em;
    min-width: 0;
    width: 100%;
}

input:focus, select:focus, textarea:focus {
    outline: 0.125rem solid var(--blue);
    outline-offset: 0;
}

.btn {
    font: inherit;
    font-weight: 600;
    color: var(--fg-strong);
    background: var(--bg);
    border: 0.0625rem solid var(--muted);
    border-radius: 0.35rem;
    padding: 0.55em 1em;
    cursor: pointer;
    min-height: 2.6rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: default;
}

.btn.primary {
    background: var(--blue);
    border-color: var(--blue);
    color: var(--base3);
}

.btn.danger {
    color: var(--red);
    border-color: var(--red);
}

.btn.small {
    padding: 0.3em 0.7em;
    min-height: 2rem;
    font-weight: 500;
}

.toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    cursor: pointer;
    user-select: none;
}

.toggle input {
    width: 1.2rem;
    height: 1.2rem;
    margin: 0;
    accent-color: var(--blue);
}

.muted {
    color: var(--muted);
}

.small {
    font-size: 0.85rem;
}

.badge {
    display: inline-block;
    padding: 0.1em 0.5em;
    border-radius: 1em;
    background: var(--bg);
    color: var(--fg-strong);
    font-size: 0.8rem;
}

.badge.ok {
    background: var(--green);
    color: var(--base3);
}

.badge.warn {
    background: var(--yellow);
    color: var(--base3);
}

.badge.err {
    background: var(--red);
    color: var(--base3);
}

.camera {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    background: var(--base03);
    border-radius: var(--radius);
    overflow: hidden;
}

.camera video, .camera canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.camera .status {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 0.4em 0.8em;
    background: rgb(0 43 54 / 0.7);
    color: var(--base2);
    font-size: 0.9rem;
}

.camera .center {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--base1);
    text-align: center;
    padding: 1rem;
}

.guide {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    pointer-events: none;
    color: var(--base3);
    text-shadow: 0 0 0.3em rgb(0 0 0 / 0.8);
    font-size: clamp(1.2rem, 4vw, 2rem);
    font-weight: 700;
    text-align: center;
    padding: 0 1rem;
}

.guide svg {
    width: 35%;
    max-width: 12rem;
    height: auto;
    filter: drop-shadow(0 0 0.3em rgb(0 0 0 / 0.7));
}

.guide.here {
    background: rgb(133 153 0 / 0.35);
}

.guide.wrong {
    background: rgb(220 50 47 / 0.3);
}

.list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.list > li {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.55em 0;
    border-bottom: 0.0625rem solid var(--line);
}

.list > li:last-child {
    border-bottom: 0;
}

.list .grow {
    flex: 1;
    min-width: 0;
}

.list .title {
    color: var(--fg-strong);
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.list li.clickable {
    cursor: pointer;
}

.list li.selected {
    background: var(--bg);
    margin: 0 -0.5rem;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    border-radius: 0.35rem;
}

.thumb {
    width: 3.2rem;
    height: 3.2rem;
    object-fit: cover;
    border-radius: 0.35rem;
    background: var(--bg);
    flex: none;
}

.tree details {
    margin: 0.4rem 0 0.4rem 0;
}

.tree details details {
    margin-left: 1rem;
}

.tree summary {
    cursor: pointer;
    padding: 0.35em 0.25em;
    color: var(--fg-strong);
    font-weight: 600;
}

.tree summary .muted {
    font-weight: 400;
}

.tree .actions {
    margin: 0.25rem 0 0.5rem 1.3rem;
}

.toasts {
    position: fixed;
    left: 50%;
    bottom: 1.5rem;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 20;
    width: min(90vw, 30rem);
}

.toast {
    background: var(--base02);
    color: var(--base2);
    padding: 0.7em 1em;
    border-radius: var(--radius);
    border-left: 0.3rem solid var(--blue);
    box-shadow: 0 0.3rem 1rem rgb(0 0 0 / 0.3);
}

.toast.ok {
    border-left-color: var(--green);
}

.toast.err {
    border-left-color: var(--red);
}

.modal-back {
    position: fixed;
    inset: 0;
    background: rgb(0 43 54 / 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    z-index: 10;
}

.modal {
    background: var(--bg);
    border-radius: var(--radius);
    padding: 1rem;
    width: min(100%, 32rem);
    max-height: 90vh;
    overflow: auto;
}

.label-preview {
    display: block;
    width: 100%;
    max-width: 24rem;
    image-rendering: pixelated;
    border: 0.0625rem solid var(--muted);
    background: #fff;
}

.photo {
    max-width: 100%;
    border-radius: var(--radius);
}

.target {
    border-left: 0.3rem solid var(--green);
}

.hint {
    font-size: 0.85rem;
    color: var(--muted);
    margin-top: 0.3rem;
}

/* Item ids: short, fixed-width, so a list of them lines up. */
.tag {
    font-size: 0.8em;
    font-weight: 600;
    color: var(--violet);
}

/* Unidentified scans carry magenta wherever they show up. */
.unknown {
    border-left: 0.3rem solid var(--magenta);
    padding-left: 0.6rem;
}

.list > li.unknown {
    padding-left: 0.5rem;
}

.tree details.unknown > summary {
    color: var(--magenta);
}

.list li.focused {
    outline: 0.15rem solid var(--blue);
    outline-offset: 0.1rem;
    border-radius: 0.35rem;
}

/* The capture sign: covers the picture, then fades out. */
.camera .flash {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    pointer-events: none;
    color: var(--base3);
    font-size: clamp(1.1rem, 3.5vw, 1.8rem);
    font-weight: 700;
    text-align: center;
    text-shadow: 0 0 0.3em rgb(0 0 0 / 0.8);
    padding: 0 1rem;
    animation: flash-out 2.2s ease-in forwards;
}

.camera .flash svg {
    width: 40%;
    max-width: 14rem;
    height: auto;
    filter: drop-shadow(0 0 0.3em rgb(0 0 0 / 0.6));
}

.camera .flash.ok {
    background: rgb(133 153 0 / 0.55);
    box-shadow: inset 0 0 0 0.6rem var(--green);
}

.camera .flash.unknown {
    background: rgb(211 54 130 / 0.55);
    box-shadow: inset 0 0 0 0.6rem var(--magenta);
}

.camera .flash.elsewhere {
    background: rgb(203 75 22 / 0.55);
    box-shadow: inset 0 0 0 0.6rem var(--orange);
}

.camera .flash.err {
    background: rgb(220 50 47 / 0.55);
    box-shadow: inset 0 0 0 0.6rem var(--red);
}

@keyframes flash-out {
    0%, 55% {
        opacity: 1;
    }
    100% {
        opacity: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .camera .flash {
        animation-timing-function: steps(1, end);
    }
}

.camera video {
    transform-origin: center;
}

.camera .zoom {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.2rem 0.6rem;
    border-radius: 1em;
    background: rgb(0 43 54 / 0.7);
    color: var(--base2);
    font-size: 0.85rem;
}

.camera .zoom input {
    width: 7rem;
    padding: 0;
    accent-color: var(--blue);
}

.batch-box {
    border-left: 0.3rem solid var(--violet);
    padding-left: 0.6rem;
}

/* Edit mode: one flat list; shift-clicks select runs, so text selection would only get in the way. */
.edit-list {
    padding: 0.5rem 1rem;
    user-select: none;
}

.edit-list > li.head {
    color: var(--fg-strong);
    font-weight: 700;
    padding-top: 0.9em;
}

.edit-list > li.selected {
    background: var(--bg);
    margin: 0;
    border-radius: 0.35rem;
}

.edit-list input[type="checkbox"] {
    width: auto;
    pointer-events: none;
}

.selection-bar {
    position: sticky;
    bottom: 0.5rem;
    border: 0.15rem solid var(--blue);
    z-index: 5;
}

.selection-bar select {
    flex: 1;
    width: auto;
}