/* =========================================================================
 * Approve57 — Material Design 3 stylesheet (light theme, minimalist)
 * Vanilla CSS, M3 tokens via custom properties. Roboto + Material Icons are
 * loaded by the PHP views. House style adapted from bok.57c.link.
 * Shared by: login.php, dashboard.php (app.js), review.php (review.js).
 * ========================================================================= */

/* ---------------------------------------------------------------- Reset -- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

/* --------------------------------------------------------------- Tokens -- */
:root {
    /* Color — M3 light */
    --md-primary: #3f51b5;
    --md-primary-hover: #35459c;
    --md-primary-container: #e0e3ff;
    --md-on-primary: #ffffff;
    --md-on-primary-container: #10164b;

    --md-secondary-container: #e3e7f4;
    --md-on-secondary-container: #2b3150;

    --md-surface: #ffffff;
    --md-surface-1: #fafbfd;
    --md-surface-2: #f3f5fa;
    --md-surface-variant: #eceef5;
    --md-background: #f4f5f9;

    --md-on-surface: #1b1c1f;
    --md-on-surface-variant: #5a5d68;
    --md-outline: #c3c6d1;
    --md-outline-variant: #e2e4ec;

    --md-error: #ba1a1a;
    --md-error-container: #ffdad6;
    --md-on-error: #ffffff;

    /* Status palette */
    --st-blue-bg: #e3f0ff;      --st-blue-fg: #0b57a4;
    --st-amber-bg: #fff2dd;     --st-amber-fg: #9a5b00;
    --st-red-bg: #ffdad6;       --st-red-fg: #a3160f;
    --st-green-bg: #d7f2dd;     --st-green-fg: #1f6b34;
    --st-neutral-bg: #eceef5;   --st-neutral-fg: #5a5d68;

    /* Elevation */
    --md-elev-1: 0 1px 2px rgba(16, 22, 43, .07), 0 1px 3px rgba(16, 22, 43, .05);
    --md-elev-2: 0 2px 6px rgba(16, 22, 43, .09), 0 1px 2px rgba(16, 22, 43, .06);
    --md-elev-3: 0 6px 18px rgba(16, 22, 43, .13), 0 2px 6px rgba(16, 22, 43, .08);
    --md-elev-4: 0 12px 34px rgba(16, 22, 43, .18);

    /* Shape */
    --r-xs: 6px;
    --r-sm: 10px;
    --r-md: 14px;
    --r-lg: 20px;
    --r-xl: 28px;
    --r-full: 999px;

    /* Motion */
    --ease: cubic-bezier(.2, 0, 0, 1);
    --dur-1: 140ms;
    --dur-2: 240ms;

    /* Layout */
    --appbar-h: 64px;

    font-family: "Roboto", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color-scheme: light;
}

body {
    font-family: inherit;
    font-size: 14px;
    line-height: 1.5;
    color: var(--md-on-surface);
    background: var(--md-background);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { margin: 0; font-weight: 500; line-height: 1.25; }

a { color: var(--md-primary); }

.material-icons {
    font-family: "Material Icons";
    font-weight: normal;
    font-style: normal;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    display: inline-block;
    white-space: nowrap;
    direction: ltr;
    -webkit-font-feature-settings: "liga";
    -webkit-font-smoothing: antialiased;
    vertical-align: middle;
}

/* Screen-reader only */
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap; border: 0;
}

:focus-visible {
    outline: 2px solid var(--md-primary);
    outline-offset: 2px;
}

/* -------------------------------------------------------------- Buttons -- */
.btn {
    -webkit-appearance: none;
    appearance: none;
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: .1px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 40px;
    padding: 0 20px;
    border: 0;
    border-radius: var(--r-full);
    background: var(--md-primary);
    color: var(--md-on-primary);
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    transition: background var(--dur-1) var(--ease), box-shadow var(--dur-1) var(--ease), opacity var(--dur-1);
}
.btn .material-icons { font-size: 18px; }
.btn:hover { background: var(--md-primary-hover); box-shadow: var(--md-elev-1); }
.btn:active { box-shadow: none; }
.btn:disabled { background: rgba(27, 28, 31, .12); color: rgba(27, 28, 31, .38); cursor: not-allowed; box-shadow: none; }

.btn--tonal { background: var(--md-secondary-container); color: var(--md-on-secondary-container); }
.btn--tonal:hover { background: #d5dbee; }

.btn--outline { background: transparent; color: var(--md-primary); border: 1px solid var(--md-outline); }
.btn--outline:hover { background: rgba(63, 81, 181, .08); box-shadow: none; border-color: var(--md-primary); }

.btn--text { background: transparent; color: var(--md-primary); padding: 0 12px; }
.btn--text:hover { background: rgba(63, 81, 181, .08); box-shadow: none; }

.btn--success { background: var(--st-green-fg); }
.btn--success:hover { background: #185127; }
.btn--danger { background: var(--md-error); }
.btn--danger:hover { background: #8f1414; }
.btn--warning { background: var(--st-amber-fg); }
.btn--warning:hover { background: #7c4900; }

.btn--sm { height: 32px; padding: 0 14px; font-size: 13px; }
.btn--block { width: 100%; }

/* Icon button */
.icon-btn {
    -webkit-appearance: none;
    appearance: none;
    border: 0;
    background: transparent;
    color: var(--md-on-surface-variant);
    width: 40px; height: 40px;
    border-radius: var(--r-full);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background var(--dur-1) var(--ease), color var(--dur-1);
}
.icon-btn:hover { background: rgba(27, 28, 31, .06); color: var(--md-on-surface); }
.icon-btn .material-icons { font-size: 22px; }
.icon-btn--sm { width: 32px; height: 32px; }
.icon-btn--sm .material-icons { font-size: 18px; }

/* ---------------------------------------------------------------- Chips -- */
.chip {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    height: 26px;
    padding: 0 10px;
    border-radius: var(--r-full);
    font-size: 12px;
    font-weight: 500;
    line-height: 1;
    background: var(--st-neutral-bg);
    color: var(--st-neutral-fg);
    white-space: nowrap;
}
.chip .material-icons { font-size: 15px; }
.chip--blue { background: var(--st-blue-bg); color: var(--st-blue-fg); }
.chip--amber { background: var(--st-amber-bg); color: var(--st-amber-fg); }
.chip--red { background: var(--st-red-bg); color: var(--st-red-fg); }
.chip--green { background: var(--st-green-bg); color: var(--st-green-fg); }
.chip--neutral { background: var(--st-neutral-bg); color: var(--st-neutral-fg); }
.chip--outline { background: transparent; border: 1px solid var(--md-outline-variant); color: var(--md-on-surface-variant); }
.chip--role { background: var(--md-primary-container); color: var(--md-on-primary-container); }

/* --------------------------------------------------------------- Layout -- */
#app { min-height: 100vh; }

.app-bar {
    position: sticky;
    top: 0;
    z-index: 40;
    height: var(--appbar-h);
    background: var(--md-surface);
    border-bottom: 1px solid var(--md-outline-variant);
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 20px;
}
.app-bar__brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--md-primary);
    letter-spacing: .2px;
}
.app-bar__brand .material-icons { font-size: 26px; }
.app-bar__nav { display: flex; gap: 4px; margin-left: 8px; }
.app-bar__nav .navlink {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 40px;
    padding: 0 16px;
    border-radius: var(--r-full);
    color: var(--md-on-surface-variant);
    font-weight: 500;
    cursor: pointer;
    background: none;
    border: 0;
    font-family: inherit;
    font-size: 14px;
    transition: background var(--dur-1) var(--ease), color var(--dur-1);
}
.app-bar__nav .navlink .material-icons { font-size: 20px; }
.app-bar__nav .navlink:hover { background: rgba(63, 81, 181, .08); color: var(--md-on-surface); }
.app-bar__nav .navlink.is-active { background: var(--md-secondary-container); color: var(--md-on-secondary-container); }
.app-bar__spacer { flex: 1; }
.app-bar__user {
    display: flex;
    align-items: center;
    gap: 10px;
}
.app-bar__user .who { display: flex; flex-direction: column; align-items: flex-end; line-height: 1.2; }
.app-bar__user .who .name { font-weight: 500; font-size: 13px; }

.avatar {
    width: 36px; height: 36px;
    border-radius: var(--r-full);
    background: var(--md-primary-container);
    color: var(--md-on-primary-container);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    text-transform: uppercase;
    flex: none;
}

.content {
    max-width: 1240px;
    margin: 0 auto;
    padding: 24px 20px 64px;
}

.page-head {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}
.page-head__titles { flex: 1; min-width: 220px; }
.page-head h1 { font-size: 26px; }
.page-head .sub { color: var(--md-on-surface-variant); margin-top: 4px; }
.page-head__actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

.breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-bottom: 12px;
    background: none;
    border: 0;
    color: var(--md-on-surface-variant);
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    padding: 6px 10px 6px 4px;
    border-radius: var(--r-full);
}
.breadcrumb:hover { background: rgba(27, 28, 31, .05); color: var(--md-on-surface); }
.breadcrumb .material-icons { font-size: 18px; }

/* ---------------------------------------------------------------- Cards -- */
.card {
    background: var(--md-surface);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--r-md);
    box-shadow: var(--md-elev-1);
}
.card__pad { padding: 20px; }

/* Projects grid */
.grid {
    display: grid;
    gap: 18px;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.project-card {
    background: var(--md-surface);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--r-md);
    box-shadow: var(--md-elev-1);
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    cursor: pointer;
    transition: box-shadow var(--dur-1) var(--ease), transform var(--dur-1) var(--ease), border-color var(--dur-1);
    text-align: left;
    font-family: inherit;
    color: inherit;
}
.project-card:hover { box-shadow: var(--md-elev-3); transform: translateY(-2px); border-color: var(--md-outline); }
.project-card__top { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.project-card__name { font-size: 17px; font-weight: 500; }
.project-card__desc {
    color: var(--md-on-surface-variant);
    font-size: 13px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 2.6em;
}
.project-card__meta {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--md-on-surface-variant);
    font-size: 12.5px;
    flex-wrap: wrap;
}
.project-card__meta .m { display: inline-flex; align-items: center; gap: 5px; }
.project-card__meta .material-icons { font-size: 16px; }
.project-card.is-archived { opacity: .72; }

/* Files grid */
.file-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
}
.file-card {
    background: var(--md-surface);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--r-md);
    box-shadow: var(--md-elev-1);
    overflow: hidden;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    transition: box-shadow var(--dur-1) var(--ease), transform var(--dur-1) var(--ease), border-color var(--dur-1);
    text-align: left;
    font-family: inherit;
    color: inherit;
    padding: 0;
}
.file-card:hover { box-shadow: var(--md-elev-3); transform: translateY(-2px); border-color: var(--md-outline); }
.file-thumb {
    position: relative;
    aspect-ratio: 4 / 3;
    background: var(--md-surface-2);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-bottom: 1px solid var(--md-outline-variant);
}
.file-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.file-thumb .placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: var(--md-on-surface-variant);
}
.file-thumb .placeholder .material-icons { font-size: 44px; }
.file-thumb .placeholder .ext { font-size: 11px; font-weight: 600; letter-spacing: .8px; text-transform: uppercase; }
.file-thumb .vbadge {
    position: absolute;
    top: 8px; left: 8px;
    background: rgba(27, 28, 31, .78);
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--r-full);
}
.file-card__body { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 8px; }
.file-card__name {
    font-weight: 500;
    font-size: 14px;
    word-break: break-word;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.file-card__foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    color: var(--md-on-surface-variant);
    font-size: 12px;
}
.file-card__counts { display: inline-flex; gap: 12px; }
.file-card__counts .c { display: inline-flex; align-items: center; gap: 4px; }
.file-card__counts .material-icons { font-size: 15px; }

/* Reviewer chips row */
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

/* Definition rows */
.dl { display: grid; grid-template-columns: auto 1fr; gap: 6px 18px; font-size: 13px; }
.dl dt { color: var(--md-on-surface-variant); }
.dl dd { margin: 0; }

/* ------------------------------------------------------------- Viewer ---- */
.viewer {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 380px;
    gap: 20px;
    align-items: start;
}
.viewer__main { min-width: 0; display: flex; flex-direction: column; gap: 14px; }
.viewer__side {
    position: sticky;
    top: calc(var(--appbar-h) + 16px);
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-height: calc(100vh - var(--appbar-h) - 32px);
    overflow: auto;
}

.stage-wrap {
    background: var(--md-surface);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--r-md);
    box-shadow: var(--md-elev-1);
    padding: 14px;
}
.stage-canvasbox {
    position: relative;
    display: inline-block;
    max-width: 100%;
    line-height: 0;
    margin: 0 auto;
}
.stage-canvasbox img.stage-img {
    display: block;
    max-width: 100%;
    height: auto;
    user-select: none;
    -webkit-user-drag: none;
}
.stage-canvasbox canvas.anno-layer {
    position: absolute;
    top: 0; left: 0;
    touch-action: none;
}
.stage-canvasbox.is-drawing canvas.anno-layer { cursor: crosshair; }
.stage-center { text-align: center; }

.pdf-frame {
    width: 100%;
    height: min(72vh, 820px);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--r-sm);
    background: var(--md-surface-2);
}
.stage-empty {
    padding: 48px 16px;
    text-align: center;
    color: var(--md-on-surface-variant);
}
.stage-empty .material-icons { font-size: 52px; opacity: .6; }

/* Version tabs */
.version-tabs {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    align-items: center;
}
.version-tab {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    height: 34px;
    padding: 0 14px;
    border-radius: var(--r-full);
    border: 1px solid var(--md-outline-variant);
    background: var(--md-surface);
    color: var(--md-on-surface-variant);
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: background var(--dur-1), border-color var(--dur-1), color var(--dur-1);
}
.version-tab:hover { background: var(--md-surface-2); }
.version-tab.is-active { background: var(--md-primary-container); color: var(--md-on-primary-container); border-color: transparent; }
.version-tab .dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; opacity: .6; }

/* Annotation toolbar */
.anno-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    background: var(--md-surface-1);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--r-md);
    padding: 10px 12px;
}
.anno-tools { display: flex; gap: 4px; }
.tool-btn {
    width: 38px; height: 38px;
    border-radius: var(--r-sm);
    border: 1px solid transparent;
    background: transparent;
    color: var(--md-on-surface-variant);
    cursor: pointer;
    display: inline-flex; align-items: center; justify-content: center;
    transition: background var(--dur-1), color var(--dur-1);
}
.tool-btn .material-icons { font-size: 20px; }
.tool-btn:hover { background: var(--md-surface-2); color: var(--md-on-surface); }
.tool-btn.is-active { background: var(--md-primary-container); color: var(--md-on-primary-container); }
.anno-bar .sep { width: 1px; align-self: stretch; background: var(--md-outline-variant); margin: 2px 2px; }
.color-field { display: inline-flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--md-on-surface-variant); }
.color-field input[type="color"] {
    width: 34px; height: 34px;
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--r-sm);
    background: none;
    padding: 2px;
    cursor: pointer;
}
.anno-bar .pending-tag {
    font-size: 12px;
    color: var(--md-on-surface-variant);
    background: var(--md-surface-2);
    padding: 4px 10px;
    border-radius: var(--r-full);
}

/* Comments panel */
.panel {
    background: var(--md-surface);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--r-md);
    box-shadow: var(--md-elev-1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.panel__head {
    padding: 14px 16px;
    border-bottom: 1px solid var(--md-outline-variant);
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}
.panel__head .material-icons { font-size: 20px; color: var(--md-on-surface-variant); }
.panel__head .count { margin-left: auto; color: var(--md-on-surface-variant); font-size: 12px; font-weight: 500; }
.panel__body { padding: 8px 0; }

.comment {
    padding: 12px 16px;
    display: flex;
    gap: 12px;
    border-bottom: 1px solid var(--md-outline-variant);
}
.comment:last-child { border-bottom: 0; }
.comment__meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 4px; }
.comment__author { font-weight: 500; font-size: 13px; }
.comment__time { color: var(--md-on-surface-variant); font-size: 12px; }
.comment__body { font-size: 13.5px; white-space: pre-wrap; word-break: break-word; }
.comment__anno {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 6px;
    font-size: 12px;
    color: var(--md-primary);
}
.comment__anno .material-icons { font-size: 15px; }

.comment-form { padding: 14px 16px; border-top: 1px solid var(--md-outline-variant); display: flex; flex-direction: column; gap: 10px; }

/* Status history */
.timeline { display: flex; flex-direction: column; gap: 2px; }
.timeline__row {
    display: flex;
    gap: 10px;
    align-items: baseline;
    font-size: 12.5px;
    padding: 6px 0;
}
.timeline__row .material-icons { font-size: 16px; color: var(--md-on-surface-variant); }
.timeline__row .who { color: var(--md-on-surface-variant); }
.timeline__row .time { color: var(--md-on-surface-variant); margin-left: auto; white-space: nowrap; }

/* Reviewer decision bar */
.decision-bar { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------------------------------------------------------------- Table -- */
.table-wrap { overflow-x: auto; border: 1px solid var(--md-outline-variant); border-radius: var(--r-md); background: var(--md-surface); }
table.data { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 640px; }
table.data th, table.data td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--md-outline-variant); vertical-align: middle; }
table.data th { font-weight: 500; color: var(--md-on-surface-variant); font-size: 12px; text-transform: uppercase; letter-spacing: .4px; background: var(--md-surface-1); }
table.data tr:last-child td { border-bottom: 0; }
table.data tr:hover td { background: var(--md-surface-1); }
table.data .row-actions { display: flex; gap: 4px; justify-content: flex-end; }

/* ---------------------------------------------------------------- Forms -- */
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.field > label { font-size: 13px; font-weight: 500; color: var(--md-on-surface-variant); }
.field .hint { font-size: 12px; color: var(--md-on-surface-variant); }
.field .hint.err { color: var(--md-error); }

.input,
.textarea,
.select {
    width: 100%;
    font-family: inherit;
    font-size: 14px;
    color: var(--md-on-surface);
    background: var(--md-surface);
    border: 1px solid var(--md-outline);
    border-radius: var(--r-sm);
    padding: 11px 13px;
    transition: border-color var(--dur-1), box-shadow var(--dur-1);
}
.textarea { resize: vertical; min-height: 84px; line-height: 1.5; }
.input:focus,
.textarea:focus,
.select:focus {
    outline: none;
    border-color: var(--md-primary);
    box-shadow: 0 0 0 3px rgba(63, 81, 181, .14);
}
.input::placeholder, .textarea::placeholder { color: #9aa; }

/* input with leading icon (login) */
.input-icon { position: relative; }
.input-icon .material-icons {
    position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
    color: var(--md-on-surface-variant); font-size: 20px; pointer-events: none;
}
.input-icon .input { padding-left: 42px; }
.input-icon .toggle-pass {
    position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
}

.checkline { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.checkline input { width: 16px; height: 16px; accent-color: var(--md-primary); }

/* Multiselect reviewers */
.pick-list {
    border: 1px solid var(--md-outline);
    border-radius: var(--r-sm);
    max-height: 220px;
    overflow: auto;
    padding: 4px;
}
.pick-list__item {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 10px;
    border-radius: var(--r-xs);
    cursor: pointer;
}
.pick-list__item:hover { background: var(--md-surface-2); }
.pick-list__item input { width: 16px; height: 16px; accent-color: var(--md-primary); }
.pick-list__item .role { margin-left: auto; }

/* ------------------------------------------------------------- Dialogs --- */
.scrim {
    position: fixed;
    inset: 0;
    background: rgba(15, 17, 26, .48);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 80;
    animation: fade var(--dur-2) var(--ease);
}
.dialog {
    background: var(--md-surface);
    border-radius: var(--r-lg);
    box-shadow: var(--md-elev-4);
    width: 100%;
    max-width: 520px;
    max-height: calc(100vh - 40px);
    display: flex;
    flex-direction: column;
    animation: pop var(--dur-2) var(--ease);
}
.dialog--wide { max-width: 680px; }
.dialog__head {
    display: flex; align-items: center; gap: 12px;
    padding: 20px 22px 4px;
}
.dialog__head h2 { font-size: 20px; }
.dialog__head .icon-btn { margin-left: auto; }
.dialog__body { padding: 14px 22px; overflow: auto; }
.dialog__foot {
    display: flex; justify-content: flex-end; gap: 10px;
    padding: 14px 22px 20px;
}

@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes pop { from { opacity: 0; transform: translateY(14px) scale(.98); } to { opacity: 1; transform: none; } }

/* ------------------------------------------------------------- Snackbar -- */
.snackbar-host {
    position: fixed;
    left: 50%;
    bottom: 24px;
    transform: translateX(-50%);
    z-index: 120;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
    width: min(92vw, 460px);
}
.snackbar {
    width: 100%;
    background: #2b2c31;
    color: #f4f5f9;
    border-radius: var(--r-sm);
    box-shadow: var(--md-elev-3);
    padding: 13px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13.5px;
    animation: snackin var(--dur-2) var(--ease);
}
.snackbar .material-icons { font-size: 20px; flex: none; }
.snackbar .msg { flex: 1; }
.snackbar .close { color: inherit; opacity: .8; }
.snackbar.is-success { border-left: 4px solid #5cc77a; }
.snackbar.is-error { border-left: 4px solid #ff6b60; }
.snackbar.is-info { border-left: 4px solid #6ea8ff; }
.snackbar.is-warning { border-left: 4px solid #ffc267; }
@keyframes snackin { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

/* ------------------------------------------------------ Loading / empty -- */
.loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    padding: 64px 16px;
    color: var(--md-on-surface-variant);
}
.spinner {
    width: 40px; height: 40px;
    border: 4px solid var(--md-outline-variant);
    border-top-color: var(--md-primary);
    border-radius: 50%;
    animation: spin .9s linear infinite;
}
.spinner--sm { width: 20px; height: 20px; border-width: 3px; }
@keyframes spin { to { transform: rotate(360deg); } }

.empty {
    text-align: center;
    padding: 56px 24px;
    color: var(--md-on-surface-variant);
    background: var(--md-surface-1);
    border: 1px dashed var(--md-outline);
    border-radius: var(--r-md);
}
.empty .material-icons { font-size: 54px; opacity: .55; margin-bottom: 8px; }
.empty h3 { font-weight: 500; color: var(--md-on-surface); margin-bottom: 6px; }

.section-title {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .5px;
    text-transform: uppercase;
    color: var(--md-on-surface-variant);
    margin: 4px 0 12px;
}

.divider { height: 1px; background: var(--md-outline-variant); border: 0; margin: 20px 0; }

/* Copy-link row */
.copy-row { display: flex; gap: 8px; align-items: center; }
.copy-row .input { font-size: 12.5px; font-family: "Roboto Mono", ui-monospace, monospace; }

.token-item {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 0;
    border-bottom: 1px solid var(--md-outline-variant);
}
.token-item:last-child { border-bottom: 0; }
.token-item .tk { font-family: ui-monospace, monospace; font-size: 12px; color: var(--md-on-surface-variant); word-break: break-all; flex: 1; }

/* =========================================================== Auth pages == */
.auth-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background:
        radial-gradient(1200px 600px at 15% -10%, #e7eaff 0%, transparent 55%),
        radial-gradient(1000px 500px at 100% 110%, #dfe6ff 0%, transparent 50%),
        var(--md-background);
}
.auth-card {
    width: 100%;
    max-width: 400px;
    background: var(--md-surface);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--r-xl);
    box-shadow: var(--md-elev-4);
    padding: 40px 34px 34px;
    animation: pop var(--dur-2) var(--ease);
}
.auth-card__brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-bottom: 26px;
    text-align: center;
}
.auth-logo {
    width: 56px; height: 56px;
    border-radius: var(--r-lg);
    background: var(--md-primary);
    color: #fff;
    display: inline-flex; align-items: center; justify-content: center;
}
.auth-logo .material-icons { font-size: 30px; }
.auth-card__brand h1 { font-size: 24px; color: var(--md-primary); }
.auth-card__brand p { color: var(--md-on-surface-variant); font-size: 13px; }
.auth-form { display: flex; flex-direction: column; gap: 4px; }
.auth-alert {
    display: none;
    align-items: center;
    gap: 8px;
    background: var(--md-error-container);
    color: #6b0f0a;
    border-radius: var(--r-sm);
    padding: 10px 12px;
    font-size: 13px;
    margin-bottom: 12px;
}
.auth-alert.is-visible { display: flex; }
.auth-alert.is-success { background: var(--st-green-bg); color: var(--st-green-fg); }
.auth-alert .material-icons { font-size: 18px; }
.pw-rules { list-style: none; padding: 0; margin: 4px 0 14px; display: grid; gap: 4px; }
.pw-rules li { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--md-on-surface-variant); }
.pw-rules li .material-icons { font-size: 15px; color: var(--md-outline); }
.pw-rules li.ok { color: var(--st-green-fg); }
.pw-rules li.ok .material-icons { color: var(--st-green-fg); }

.reject-page { max-width: 520px; margin: 14vh auto; text-align: center; padding: 24px; }
.reject-page .material-icons { font-size: 64px; color: var(--md-on-surface-variant); opacity: .6; }
.reject-page h1 { font-size: 24px; margin: 12px 0 8px; }
.reject-page p { color: var(--md-on-surface-variant); }

/* --------------------------------------------------------- Incognito UI -- */
.ghost-banner {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12.5px;
    color: var(--md-on-surface-variant);
    background: var(--md-surface-2);
    border-radius: var(--r-full);
    padding: 6px 12px;
}
.ghost-banner .material-icons { font-size: 17px; }

/* --------------------------------------------------------------- Utils --- */
.stack { display: flex; flex-direction: column; }
.stack-8 { gap: 8px; } .stack-12 { gap: 12px; } .stack-16 { gap: 16px; } .stack-20 { gap: 20px; }
.row { display: flex; align-items: center; gap: 10px; }
.row-wrap { flex-wrap: wrap; }
.gap-8 { gap: 8px; } .gap-12 { gap: 12px; }
.grow { flex: 1; }
.muted { color: var(--md-on-surface-variant); }
.nowrap { white-space: nowrap; }
.hidden { display: none !important; }
.mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; } .mb-16 { margin-bottom: 16px; }
.text-right { text-align: right; }

/* ----------------------------------------------------------- Responsive -- */
@media (max-width: 1080px) {
    .viewer { grid-template-columns: 1fr; }
    .viewer__side { position: static; max-height: none; overflow: visible; }
}
@media (max-width: 720px) {
    .app-bar { padding: 0 12px; gap: 8px; }
    .app-bar__nav .navlink span { display: none; }
    .app-bar__nav .navlink { padding: 0 12px; }
    .app-bar__user .who { display: none; }
    .content { padding: 16px 14px 56px; }
    .page-head h1 { font-size: 22px; }
    .dialog { max-width: 100%; }
    .decision-bar .btn { flex: 1; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }
}