.screen {
    background: var(--bg-canvas);
    color: var(--text-body);
    position: relative;
}
#login-screen, #auth-loading-screen { min-height: 100vh; min-height: 100dvh; }
#setup-screen { min-height: auto; overflow-x: hidden; }
#display-screen { overflow: hidden; }
body { background: var(--bg-canvas); min-height: 100vh; }

#login-screen > *,
#setup-screen > *,
#auth-loading-screen > * { position: relative; z-index: 1; }

#display-screen {
    background: #fff;
    overflow: hidden;
    padding: 0;
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
#display-screen::before { display: none; }
#svg-container {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: rotate(90deg);
    transform-origin: center center;
}
#svg-container.rotate-anticlockwise { transform: rotate(-90deg); }
#svg-container svg {
    max-width: 100vh;
    max-height: 100vw;
    width: auto;
    height: auto;
}
#display-screen #reset-trigger {
    position: fixed;
    top: 0; left: 0;
    width: 96px; height: 96px;
    z-index: 20;
    cursor: pointer;
}
#display-screen #status-bar { display: none !important; }

#login-screen {
    display: grid;
    place-items: center;
    padding: var(--space-6);
}
.login-container {
    display: grid;
    grid-template-columns: 1fr;
    width: 100%;
    max-width: 26rem;
    padding: var(--space-7);
    background: var(--bg-surface);
    border: var(--border-w) solid var(--border-hairline);
    border-radius: var(--radius-l);
    text-align: left;
    position: relative;
}
.login-container::before {
    content: "LOG IN";
    position: absolute;
    top: -0.65rem; left: var(--space-5);
    padding: 0 0.5rem;
    background: var(--bg-canvas);
    font-family: var(--font-ui);
    font-size: var(--fs-caption);
    font-weight: 600;
    letter-spacing: var(--tracking-eyebrow);
    color: var(--text-muted);
}
.login-logo {
    height: 1.75rem;
    width: auto;
    margin-bottom: var(--space-6);
    filter: none;
}
#login-screen h1 {
    font-family: var(--font-display);
    font-size: var(--fs-display-l);
    line-height: var(--lh-display);
    letter-spacing: var(--tracking-display);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}
.login-subtitle {
    color: var(--text-body);
    font-size: var(--fs-body);
    line-height: var(--lh-body);
    margin-bottom: var(--space-5);
}
.google-login-btn {
    width: 100%;
    display: inline-flex; align-items: center; justify-content: center; gap: 0.65rem;
    padding: 0.9rem 1.25rem;
    background: var(--ink);
    color: var(--text-inverse);
    border: var(--border-w) solid var(--ink);
    border-radius: var(--radius-pill);
    font-family: var(--font-ui);
    font-size: var(--fs-body);
    font-weight: 600;
    cursor: pointer;
    transition: background var(--t-fast), transform var(--t-fast);
}
.google-login-btn:hover { background: var(--navy-darker); }
.google-login-btn:active { transform: translateY(0.5px); }
.google-login-btn svg { width: 1.1rem; height: 1.1rem; }
#login-error { margin-top: var(--space-3); color: var(--danger); font-size: var(--fs-small); }
.login-loading {
    display: none; margin-top: var(--space-4);
    font-family: var(--font-ui); font-size: var(--fs-small); color: var(--text-muted);
}
.login-loading.visible { display: inline-flex; align-items: center; gap: 0.5rem; }
.login-info {
    margin-top: var(--space-6);
    padding-top: var(--space-5);
    border-top: var(--border-w) solid var(--border-subtle);
    color: var(--text-muted);
    font-size: var(--fs-small);
    line-height: 1.55;
}
.login-info strong { color: var(--text-primary); font-weight: 600; }

#setup-screen {
    display: block;
    padding: 0 var(--space-6) var(--space-5);
    border-top: 4px solid var(--navy);
}
.setup-container {
    width: 100%;
    max-width: var(--container-wide);
    margin: 0 auto;
    padding-top: var(--space-5);
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-5);
}

.setup-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: 0.65rem 0;
    border-bottom: var(--border-w) solid var(--border-subtle);
}
.setup-topbar-brand { display: flex; align-items: center; gap: 0.75rem; }
.setup-topbar-brand img { height: 1.15rem; width: auto; transition: filter var(--t-base) var(--e-standard); }
[data-theme="dark"] .setup-topbar-brand img,
[data-theme="dark"] .login-logo,
[data-theme="dark"] .auth-loading-logo { filter: brightness(0) invert(1); }
.setup-topbar-brand .divider-v { width: 1px; height: 0.95rem; background: var(--border-hairline); }
.setup-topbar-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-ui);
}
.topbar-divider { width: 1px; height: 1.1rem; background: var(--grey); }

.setup-header {
    padding: var(--space-2) 0 var(--space-4);
    border-bottom: var(--border-w) solid var(--border-hairline);
}
.setup-header-title {
    font-family: var(--font-display);
    font-size: var(--fs-display-xl);
    line-height: var(--lh-display);
    letter-spacing: var(--tracking-display);
    color: var(--accent-text);
    margin: 0;
}

.meta-strip {
    display: flex;
    align-items: baseline;
    gap: 0.6rem;
    margin: 0;
    padding: 0;
    color: var(--text-body);
    font-size: var(--fs-small);
}
.meta-strip > div {
    display: flex;
    align-items: baseline;
    gap: 0.4rem;
}
.meta-strip dt {
    font-family: var(--font-ui);
    font-size: var(--fs-caption);
    font-weight: 600;
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    color: var(--text-muted);
    margin: 0;
}
.meta-strip dd {
    font-family: var(--font-ui);
    font-weight: 700;
    color: var(--accent-text);
    margin: 0;
    font-variant-numeric: tabular-nums;
}
.meta-sep { color: var(--grey); font-weight: 400; }

.setup-signout {
    appearance: none; background: transparent; border: 0;
    padding: 0.35rem 0.6rem;
    display: inline-flex; align-items: center; gap: 0.4rem;
    font-family: var(--font-ui); font-size: var(--fs-small); color: var(--text-muted);
    cursor: pointer; border-radius: var(--radius-xs);
    transition: color var(--t-fast), background var(--t-fast);
}
.setup-signout:hover { color: var(--text-primary); background: var(--cream-dark); }
.setup-signout svg { width: 0.95rem; height: 0.95rem; }

.theme-toggle {
    appearance: none;
    background: transparent;
    border: 0;
    padding: 0.3rem;
    width: 1.85rem;
    height: 1.85rem;
    display: inline-grid;
    place-items: center;
    cursor: pointer;
    color: var(--text-muted);
    border-radius: 50%;
    position: relative;
    transition: color var(--t-fast), background var(--t-fast), transform var(--t-fast);
}
.theme-toggle:hover {
    color: var(--text-primary);
    background: var(--cream-dark);
}
.theme-toggle:active { transform: scale(0.92); }
.theme-toggle .theme-icon {
    width: 1.05rem;
    height: 1.05rem;
    grid-area: 1 / 1;
    transition: opacity var(--t-base) var(--e-standard), transform var(--t-base) var(--e-standard);
}
.theme-toggle .theme-icon-sun  { opacity: 0; transform: rotate(-40deg) scale(0.7); }
.theme-toggle .theme-icon-moon { opacity: 1; transform: rotate(0deg) scale(1); }
[data-theme="dark"] .theme-toggle .theme-icon-sun  { opacity: 1; transform: rotate(0deg) scale(1); color: var(--highlighter); }
[data-theme="dark"] .theme-toggle .theme-icon-moon { opacity: 0; transform: rotate(40deg) scale(0.7); }

.launch-hero {
    background: var(--bg-surface);
    border: var(--border-w) solid var(--border-hairline);
    border-top: 3px solid var(--navy);
    border-radius: var(--radius-l);
    padding: var(--space-5) var(--space-6);
    display: grid;
    gap: var(--space-5);
    position: relative;
}
.launch-hero-top {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(16rem, 20rem);
    align-items: end;
    gap: var(--space-5);
    padding-bottom: var(--space-4);
    border-bottom: var(--border-w) solid var(--border-subtle);
}
.launch-hero-heading { display: grid; gap: 0.3rem; }
.launch-hero-heading h2 {
    font-family: var(--font-display);
    font-size: var(--fs-display-m);
    letter-spacing: var(--tracking-heading);
    line-height: 1.05;
    color: var(--text-primary);
    margin: 0;
}
.launch-hero-campus { display: grid; gap: 0.3rem; position: relative; }
.launch-hero-campus .field-label { color: var(--accent-text); font-weight: 700; }
.launch-hero-campus .branded-select-trigger { background: var(--cream-lightest); }
.launch-hero-campus .branded-select-trigger:hover { background: var(--cream-dark); }
.launch-hero-campus .branded-select-menu { background: var(--cream-lightest); }
@media (max-width: 820px) {
    .launch-hero-top { grid-template-columns: 1fr; align-items: start; }
}

.launch-hero-modes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border: var(--border-w) solid var(--border-hairline);
    border-radius: var(--radius-m);
    overflow: hidden;
    background: var(--cream-lightest);
}
@media (max-width: 820px) {
    .launch-hero-modes { grid-template-columns: 1fr; }
}

.launch-hero-action {
    padding: var(--space-5) var(--space-6);
    background: var(--cream-lightest);
    border: var(--border-w) solid var(--border-subtle);
    border-radius: var(--radius-m);
    min-height: 7rem;
    display: grid;
    place-items: center;
    position: relative;
}
.launch-hero-action .mode-panel {
    display: none;
    width: 100%;
    max-width: 42rem;
    grid-template-rows: auto 1fr auto;
    gap: var(--space-3);
    padding: 0;
    margin: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
    text-align: center;
}
.launch-hero-action .mode-panel:not(.hidden) { display: grid; }
.launch-hero-action .mode-panel h3 { display: none; }

.launch-hero-action .status-row {
    justify-self: center;
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.5rem 1rem;
    background: transparent;
    border: 0;
    border-radius: 0;
    font-family: var(--font-ui);
    font-size: var(--fs-small);
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.005em;
}
.launch-hero-action .status-row .status-indicator { width: 0.55rem; height: 0.55rem; flex-shrink: 0; }

.launch-hero-action .file-upload {
    margin: 0;
    justify-self: stretch;
    max-width: none;
    background: var(--cream-lighter);
    padding: 0.85rem 1rem;
}

.launch-hero-action .launch-button {
    width: 100%;
    max-width: 28rem;
    justify-self: center;
    padding: 1rem 1.75rem;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    background: var(--navy);
    color: var(--text-inverse);
    border: var(--border-w) solid var(--navy);
    border-radius: var(--radius-pill);
    cursor: pointer;
    transition:
        background var(--t-fast) var(--e-standard),
        border-color var(--t-fast) var(--e-standard),
        color var(--t-fast) var(--e-standard),
        transform var(--t-fast) var(--e-standard),
        box-shadow var(--t-fast) var(--e-standard);
    box-shadow: 0 1px 0 rgba(12, 33, 63, 0.15);
}
.launch-hero-action .launch-button:hover:not(:disabled) {
    background: var(--highlighter);
    border-color: var(--ink);
    color: var(--ink);
    transform: translateY(-1px);
    box-shadow: 0 6px 18px -6px rgba(12, 33, 63, 0.35);
}
.launch-hero-action .launch-button:active:not(:disabled) { transform: translateY(0); }
.launch-hero-action .launch-button:disabled {
    background: var(--grey-blue);
    border-color: var(--grey-blue);
    color: rgba(255, 249, 241, 0.85);
    box-shadow: none;
    opacity: 1;
}

.launch-hero-action #upload-status,
.launch-hero-action #offline-status,
.launch-hero-action #live-status {
    font-size: var(--fs-small);
    color: var(--text-muted);
    text-align: center;
    justify-self: center;
    min-height: 1rem;
}

.mode-panel-empty {
    width: 100%;
    text-align: center;
    margin: 0;
    padding: 0.4rem 0;
}
.mode-panel-empty-text {
    margin: 0;
    font-family: var(--font-ui);
    font-size: var(--fs-body);
    font-weight: 500;
    color: var(--text-muted);
    letter-spacing: 0.005em;
}
.launch-hero-action:has(.mode-panel:not(.hidden)) .mode-panel-empty { display: none; }

.tools-row {
    display: grid;
    gap: var(--space-4);
}
.tools-row-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    padding-bottom: var(--space-2);
    border-bottom: var(--border-w) solid var(--border-subtle);
}
.tools-row-count {
    font-family: var(--font-display);
    font-size: var(--fs-h4);
    color: var(--text-muted);
    letter-spacing: var(--tracking-heading);
}
.tools-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
}
@media (max-width: 820px) {
    .tools-grid { grid-template-columns: 1fr; }
}
.tool-card {
    appearance: none;
    text-align: left;
    padding: var(--space-5);
    background: var(--bg-surface);
    border: var(--border-w) solid var(--border-hairline);
    border-radius: var(--radius-m);
    display: grid;
    grid-template-rows: auto auto 1fr auto;
    gap: 0.6rem;
    cursor: pointer;
    transition:
        background var(--t-fast) var(--e-standard),
        color var(--t-fast) var(--e-standard),
        border-color var(--t-fast) var(--e-standard),
        transform var(--t-fast) var(--e-standard);
    color: var(--text-primary);
    font-family: var(--font-ui);
    position: relative;
    overflow: hidden;
}
.tool-card:hover {
    background: var(--navy);
    border-color: var(--navy);
    color: var(--text-inverse);
    transform: translateY(-2px);
}
.tool-card:hover .tool-card-sub { color: rgba(255, 249, 241, 0.7); }
.tool-card:hover .tool-card-icon { color: var(--highlighter); }
.tool-card-icon {
    width: 1.75rem; height: 1.75rem;
    color: var(--accent-text);
    transition: color var(--t-fast);
}
.tool-card-title {
    font-family: var(--font-display);
    font-size: var(--fs-h3);
    line-height: 1.1;
    letter-spacing: var(--tracking-heading);
    color: inherit;
}
.tool-card-sub {
    font-size: var(--fs-small);
    line-height: 1.5;
    color: var(--text-muted);
    align-self: start;
}
.tool-card-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: var(--fs-small);
    font-weight: 700;
    letter-spacing: var(--tracking-caps);
    text-transform: uppercase;
    color: var(--accent-text);
    align-self: end;
    transition: color var(--t-fast), transform var(--t-fast);
}
.tool-card-cta svg { width: 0.75rem; height: 0.75rem; transition: transform var(--t-fast); }
.tool-card:hover .tool-card-cta { color: var(--highlighter); }
.tool-card:hover .tool-card-cta svg { transform: translateX(3px); }
@media (max-width: 1040px) {
    .setup-grid { grid-template-columns: 1fr; }
    .setup-header { grid-template-columns: 1fr; align-items: start; }
    .setup-header-meta { flex-wrap: wrap; }
    .setup-header-title { font-size: var(--fs-display-l); }
}

.setup-aside { display: contents; }
.aside-card {
    padding: var(--space-4) var(--space-4) var(--space-5);
    background: var(--bg-surface);
    border: var(--border-w) solid var(--border-hairline);
    border-radius: var(--radius-m);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.aside-card-campus { gap: 0.6rem; }
.aside-card-title {
    display: block;
    margin: 0;
    font-family: var(--font-ui);
    font-size: var(--fs-caption);
    font-weight: 700;
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    color: var(--accent-text);
    cursor: pointer;
}

.aside-nav {
    display: grid;
    background: var(--bg-surface);
    border: var(--border-w) solid var(--border-hairline);
    border-radius: var(--radius-m);
    overflow: hidden;
}
.aside-nav-label {
    padding: 0.65rem 1rem 0.5rem;
    font-family: var(--font-ui);
    font-size: var(--fs-caption);
    font-weight: 700;
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    color: var(--accent-text);
    border-bottom: var(--border-w) solid var(--border-subtle);
    background: var(--cream-dark);
}
.aside-nav-item {
    appearance: none; border: 0; background: transparent;
    text-align: left;
    padding: 0.75rem 1rem;
    display: grid;
    grid-template-columns: 1.35rem minmax(0, 1fr) 0.75rem;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-ui);
    color: var(--text-primary);
    cursor: pointer;
    border-bottom: var(--border-w) solid var(--border-subtle);
    transition: background var(--t-fast), color var(--t-fast);
}
.aside-nav-item:last-child { border-bottom: 0; }
.aside-nav-item:hover { background: var(--navy); color: var(--text-inverse); }
.aside-nav-icon { display: grid; place-items: center; color: var(--accent-text); transition: color var(--t-fast); }
.aside-nav-icon svg { width: 1.05rem; height: 1.05rem; }
.aside-nav-item:hover .aside-nav-icon { color: var(--highlighter); }
.aside-nav-title {
    font-weight: 600;
    font-size: var(--fs-body);
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.aside-nav-item .chev { color: var(--text-muted); width: 0.75rem; height: 0.75rem; transition: color var(--t-fast), transform var(--t-fast); }
.aside-nav-item:hover .chev { color: var(--text-inverse); transform: translateX(2px); }

.setup-main { display: contents; }
.setup-section { display: grid; gap: var(--space-3); }
.setup-section-head { display: flex; align-items: baseline; gap: var(--space-3); }
.setup-section-head h3 {
    font-family: var(--font-display);
    font-size: var(--fs-h3);
    letter-spacing: var(--tracking-heading);
    color: var(--text-primary);
}

.mode-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border: var(--border-w) solid var(--border-hairline);
    border-radius: var(--radius-m);
    overflow: hidden;
    background: var(--cream-lightest);
}
.mode-btn {
    appearance: none; background: transparent; border: 0;
    padding: var(--space-4) var(--space-5);
    text-align: left;
    cursor: pointer;
    border-right: var(--border-w) solid var(--border-hairline);
    transition: background var(--t-fast), color var(--t-fast);
    display: grid;
    grid-template-columns: 2.25rem 1fr;
    column-gap: var(--space-3);
    align-items: start;
    position: relative;
    min-height: 7rem;
}
.mode-btn:last-child { border-right: 0; }
.mode-btn:hover { background: var(--cream-dark); }
.mode-btn .mode-num {
    font-family: var(--font-display);
    font-size: 1.75rem;
    line-height: 1;
    letter-spacing: -0.02em;
    color: var(--text-muted);
    grid-row: 1 / span 3;
    align-self: start;
}
.mode-btn .mode-body { display: grid; gap: 0.35rem; }
.mode-btn .mode-label {
    font-family: var(--font-ui);
    font-size: var(--fs-caption);
    font-weight: 600;
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    color: var(--text-muted);
}
.mode-btn .mode-title {
    font-family: var(--font-display);
    font-size: var(--fs-h3);
    color: var(--text-primary);
    letter-spacing: var(--tracking-heading);
    line-height: 1.15;
}
.mode-btn .mode-sub {
    font-size: var(--fs-small);
    color: var(--text-muted);
    line-height: 1.45;
    max-width: 22ch;
}
.mode-btn.active {
    background: var(--highlighter);
    color: var(--ink);
}
.mode-btn.active .mode-num,
.mode-btn.active .mode-title { color: var(--ink); }
.mode-btn.active .mode-label { color: rgba(17,17,17,0.6); }
.mode-btn.active .mode-sub { color: rgba(17,17,17,0.72); }
.mode-btn.active::after {
    content: ""; position: absolute;
    left: 0; right: 0; bottom: -1px;
    height: 3px; background: var(--ink);
}
@media (max-width: 820px) {
    .mode-selector { grid-template-columns: 1fr; }
    .mode-btn { border-right: 0; border-bottom: var(--border-w) solid var(--border-hairline); min-height: auto; }
    .mode-btn:last-child { border-bottom: 0; }
}

.setup-section-panel {
    padding: var(--space-5);
    background: var(--bg-surface);
    border: var(--border-w) solid var(--border-hairline);
    border-radius: var(--radius-m);
    min-height: 9rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.setup-section-panel .mode-panel {
    display: none;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-3);
    padding: 0;
    margin: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
    width: 100%;
}
.setup-section-panel .mode-panel:not(.hidden) { display: flex; }
.setup-section-panel .mode-panel h3 { display: none; }
.setup-section-panel .file-upload { margin: 0; width: 100%; max-width: 32rem; justify-content: center; }
.setup-section-panel .launch-button {
    align-self: center;
    width: 100%;
    max-width: 22rem;
    padding: 0.8rem 1.5rem;
}
.setup-section-panel .status-row {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--cream-lightest);
    border: var(--border-w) solid var(--border-subtle);
    border-radius: var(--radius-pill);
    font-size: var(--fs-small);
}
.mode-panel-empty {
    text-align: center;
    color: var(--text-muted);
    font-size: var(--fs-small);
    margin: 0;
    padding: 0;
    width: 100%;
}

.mode-panel-empty {
    color: var(--text-muted);
    font-size: var(--fs-small);
    margin: 0;
    padding: 0;
}
.setup-section-panel:has(.mode-panel:not(.hidden)) .mode-panel-empty { display: none; }

.setup-footer {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-4) 0 0;
    margin-top: var(--space-4);
    border-top: var(--border-w) solid var(--border-subtle);
    font-family: var(--font-ui);
    font-size: var(--fs-caption);
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
}
.setup-footer-brand { font-weight: 700; color: var(--accent-text); }
.setup-footer-version { font-weight: 600; color: var(--text-muted); }

.mode-panel {
    padding: var(--space-5);
    background: var(--bg-surface);
    border: var(--border-w) solid var(--border-hairline);
    border-radius: var(--radius-m);
    display: none;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}
.mode-panel:not(.hidden) { display: grid; }
.mode-panel h3 {
    font-family: var(--font-display);
    font-size: var(--fs-h2);
    letter-spacing: var(--tracking-heading);
    margin: 0;
}
.mode-panel > p { color: var(--text-body); font-size: var(--fs-body); }
.mode-panel .hint { color: var(--text-muted); font-size: var(--fs-small); margin-top: 0.25rem; }

.file-upload {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    border: var(--border-w) dashed var(--border-hairline);
    border-radius: var(--radius-s);
    background: var(--cream-lighter);
}
.file-upload label {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.5rem 1rem;
    border: var(--border-w) solid var(--border-hairline);
    border-radius: var(--radius-pill);
    background: var(--bg-canvas);
    cursor: pointer;
    font-family: var(--font-ui); font-size: var(--fs-small); font-weight: 600;
    transition: background var(--t-fast);
}
.file-upload label:hover { background: var(--cream-dark); }
.file-upload input[type="file"] {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0); border: 0;
}
.file-name {
    font-size: var(--fs-small); color: var(--text-muted);
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.launch-button {
    width: 100%;
    padding: 0.9rem 1.25rem;
    background: var(--navy);
    color: var(--text-inverse);
    border: var(--border-w) solid var(--navy);
    border-radius: var(--radius-pill);
    font-family: var(--font-ui); font-size: var(--fs-body); font-weight: 600;
    cursor: pointer;
    transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
}
.launch-button:hover:not(:disabled) { background: var(--navy-darker); border-color: var(--navy-darker); }
.launch-button:disabled { opacity: 0.4; cursor: not-allowed; }
.launch-button:active:not(:disabled) { transform: translateY(0.5px); }

.status-row {
    display: flex; align-items: center; gap: 0.5rem;
    font-family: var(--font-ui);
    font-size: var(--fs-small);
    color: var(--text-body);
}
.status-indicator {
    width: 0.55rem; height: 0.55rem; border-radius: 50%;
    background: var(--text-muted);
    display: inline-block;
}
.status-indicator.connected { background: var(--highlighter); }
.status-indicator.connected + span::before { content: ""; }
.status-indicator.loading {
    border: 2px solid var(--border-subtle);
    border-top-color: var(--text-primary);
    background: transparent;
    animation: spin 0.85s linear infinite;
}
.status-indicator.error { background: var(--danger); }
#last-upload-info, #live-status, #offline-status, #upload-status {
    font-size: var(--fs-small); color: var(--text-muted);
}
#last-upload-info small, #live-status small { color: var(--text-muted); }

.status-info  { color: var(--text-body); }
.status-error { color: var(--danger); }
.status-success { color: var(--success); }

#auth-loading-screen {
    display: grid;
    place-items: center;
    padding: var(--space-6);
}
.auth-loading-content {
    display: grid;
    justify-items: center;
    gap: var(--space-5);
    color: var(--text-muted);
}
.auth-loading-logo { height: 1.75rem; width: auto; }
.auth-loading-spinner {
    width: 1.25rem; height: 1.25rem; border-radius: 50%;
    border: 2px solid var(--border-subtle);
    border-top-color: var(--text-primary);
    animation: spin 0.85s linear infinite;
}
.auth-loading-text {
    font-family: var(--font-ui);
    font-size: var(--fs-small);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.tz-flag {
    display: inline-block;
    padding: 0.1rem 0.4rem;
    margin-left: 0.3rem;
    border-radius: 3px;
    background: var(--navy);
    color: var(--text-inverse);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    vertical-align: middle;
}