/* ===================================
   paulbuda.de - 2026 rebuild
   No inline styles anywhere (CSP style-src 'self').
   =================================== */

/* Self-hosted fonts (SIL OFL, see fonts/OFL-*.txt) */
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 100 900;
    font-display: swap;
    src: url('../fonts/inter-latin-wght-normal.woff2') format('woff2');
}

@font-face {
    font-family: 'Space Grotesk';
    font-style: normal;
    font-weight: 300 700;
    font-display: swap;
    src: url('../fonts/space-grotesk-latin-wght-normal.woff2') format('woff2');
}

:root {
    --color-bg: #0a0a0b;
    --color-bg-secondary: #111113;
    --color-bg-card: #18181b;
    --color-text: #fafafa;
    --color-text-muted: #a1a1aa;
    --color-border: #27272a;
    --color-accent: #6366f1;
    --color-accent-light: #818cf8;

    /* Project accents */
    --lumora-1: #ff3cac;
    --lumora-2: #784ba0;
    --lumora-3: #2bd2ff;
    --ops-1: #9fdcea;
    --ops-2: #3fb6d3;
    --ops-sensor: #34343b;

    --accent-1: var(--color-accent-light);
    --accent-2: var(--color-accent);

    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: ui-monospace, 'Cascadia Code', Consolas, monospace;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;

    --container: 1200px;
    --nav-height: 68px;
}

.page-lumora {
    --accent-1: var(--lumora-1);
    --accent-2: var(--lumora-3);
}

.page-ops {
    --accent-1: var(--ops-1);
    --accent-2: var(--ops-2);
}

/* --- Base ----------------------------------------------------------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

img, video, canvas {
    display: block;
    max-width: 100%;
}

img {
    height: auto;
}

a {
    color: inherit;
}

h1, h2, h3 {
    font-family: var(--font-display);
    line-height: 1.15;
}

code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 0.05em 0.35em;
}

[hidden] {
    display: none !important;
}

:focus-visible {
    outline: 2px solid var(--accent-1);
    outline-offset: 3px;
}

.skip-link {
    position: absolute;
    left: 1rem;
    top: -3rem;
    z-index: 200;
    background: var(--color-text);
    color: var(--color-bg);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
}

.skip-link:focus {
    top: 1rem;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.gradient-text {
    background: linear-gradient(120deg, var(--accent-1), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.gradient-lumora { --accent-1: var(--lumora-1); --accent-2: var(--lumora-3); }
.gradient-ops { --accent-1: var(--ops-1); --accent-2: var(--ops-2); }

/* --- Navigation --------------------------------------------------------- */
.navbar {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 100;
    height: var(--nav-height);
    transition: background var(--transition-base), border-color var(--transition-base);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background: rgba(10, 10, 11, 0.85);
    backdrop-filter: blur(12px);
    border-bottom-color: var(--color-border);
}

.nav-container {
    max-width: var(--container);
    height: 100%;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.2rem;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 1.75rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--color-text-muted);
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
    color: var(--color-text);
}

.lang-switch {
    border: 1px solid var(--color-border);
    border-radius: 999px;
    padding: 0.2rem 0.8rem;
}

.nav-toggle {
    display: none;
    background: none;
    border: 0;
    width: 32px;
    height: 32px;
    cursor: pointer;
    position: relative;
}

.nav-toggle span {
    position: absolute;
    left: 4px;
    right: 4px;
    height: 2px;
    background: var(--color-text);
    transition: transform var(--transition-base);
}

.nav-toggle span:first-child { top: 11px; }
.nav-toggle span:last-child { top: 19px; }
.nav-toggle.active span:first-child { transform: translateY(4px) rotate(45deg); }
.nav-toggle.active span:last-child { transform: translateY(-4px) rotate(-45deg); }

@media (max-width: 760px) {
    .nav-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        inset: var(--nav-height) 0 auto 0;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        background: rgba(10, 10, 11, 0.97);
        border-bottom: 1px solid var(--color-border);
        padding: 0.5rem 1.5rem 1rem;
        display: none;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a {
        padding: 0.75rem 0;
        width: 100%;
    }

    .lang-switch {
        border: 0;
    }
}

/* --- Buttons ---------------------------------------------------------- */
.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    border-radius: 999px;
    font: 600 0.95rem var(--font-body);
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background: linear-gradient(120deg, var(--accent-1), var(--accent-2));
    color: #0a0a0b;
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-text-muted);
}

.btn-small {
    padding: 0.45rem 1rem;
    font-size: 0.85rem;
}

/* --- Hero --------------------------------------------------------------- */
.hero {
    position: relative;
    padding: calc(var(--nav-height) + 5rem) 0 4rem;
    overflow: hidden;
}

.hero-home {
    padding-bottom: 2rem;
}

.hero-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0.55;
    z-index: -1;
}

.eyebrow {
    color: var(--accent-1);
    font-weight: 600;
    letter-spacing: 0.04em;
    margin-bottom: 1rem;
}

.hero-title {
    font-size: clamp(2.5rem, 7vw, 4.75rem);
    font-weight: 700;
    max-width: 18ch;
}

.hero-lead {
    color: var(--color-text-muted);
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    max-width: 60ch;
    margin-top: 1.5rem;
}

.hero-split {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 3rem;
    align-items: center;
}

@media (max-width: 900px) {
    .hero-split {
        grid-template-columns: 1fr;
    }
}

/* --- Sections ------------------------------------------------------------ */
.section {
    padding: 4.5rem 0;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: 1.25rem;
}

.section-lead {
    color: var(--color-text-muted);
    max-width: 65ch;
    margin-bottom: 2rem;
}

.note {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-top: 1.5rem;
    padding-left: 1rem;
    border-left: 2px solid var(--accent-1);
}

.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
}

@media (max-width: 900px) {
    .two-col {
        grid-template-columns: 1fr;
    }
}

/* --- Project cards (home) --------------------------------------------- */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 460px), 1fr));
    gap: 1.75rem;
}

.project-card {
    display: flex;
    flex-direction: column;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    text-decoration: none;
    transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.project-card--lumora { --accent-1: var(--lumora-1); --accent-2: var(--lumora-3); }
.project-card--openprintsense { --accent-1: var(--ops-1); --accent-2: var(--ops-2); }

.project-card:hover {
    border-color: var(--accent-1);
}

.project-visual {
    aspect-ratio: 16 / 10;
    background: #050506;
    overflow: hidden;
}

.project-visual img,
.project-visual canvas {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 600ms ease;
}

.project-card:hover .project-visual img {
    transform: scale(1.04);
}

.project-body {
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex: 1;
}

.project-body p {
    color: var(--color-text-muted);
}

.project-name {
    font-size: 1.75rem;
}

.project-body .project-tagline {
    color: var(--accent-1);
    font-weight: 600;
}

.project-cta {
    margin-top: auto;
    padding-top: 0.5rem;
    font-weight: 600;
    color: var(--accent-1);
}

/* --- About ---------------------------------------------------------------- */
.about-inner {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 3rem;
    align-items: center;
}

.about-inner p {
    color: var(--color-text-muted);
    max-width: 60ch;
}

.about-photo {
    width: 220px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
}

@media (max-width: 700px) {
    .about-inner {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .about-photo {
        width: 160px;
    }
}

/* --- Cards, steps, lists ------------------------------------------------- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
    gap: 1.25rem;
}

.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.6rem;
}

.card p {
    color: var(--color-text-muted);
}

.steps {
    list-style: none;
    counter-reset: step;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
    gap: 1.25rem;
}

.steps li {
    counter-increment: step;
    position: relative;
    padding: 3.25rem 1.25rem 1.25rem;
    border-radius: var(--radius-lg);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
}

.steps li::before {
    content: counter(step);
    position: absolute;
    top: 1rem;
    left: 1.25rem;
    width: 1.8rem;
    height: 1.8rem;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font: 700 0.9rem var(--font-display);
    color: #0a0a0b;
    background: linear-gradient(120deg, var(--accent-1), var(--accent-2));
}

.steps h3 {
    font-size: 1.05rem;
    margin-bottom: 0.4rem;
}

.steps p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.check-list,
.number-list {
    padding-left: 1.25rem;
    display: grid;
    gap: 0.6rem;
    color: var(--color-text-muted);
}

.check-list li::marker {
    content: '✓  ';
    color: var(--accent-1);
}

.check-list strong {
    color: var(--color-text);
}

.code {
    margin-top: 1.25rem;
    padding: 1rem 1.25rem;
    background: #050506;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow-x: auto;
    font-size: 0.85rem;
    line-height: 1.7;
}

.code code {
    background: none;
    border: 0;
    padding: 0;
}

/* --- Media ---------------------------------------------------------------- */
.media-frame {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    background: #050506;
    object-fit: cover;
    overflow: hidden;
}

.hero-media {
    aspect-ratio: 4 / 3;
}

.media-wide {
    aspect-ratio: 2 / 1;
}

.media-placeholder {
    position: relative;
    display: grid;
    place-items: center;
}

.media-placeholder canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0.6;
}

.media-placeholder p {
    position: relative;
    font: 600 1.1rem var(--font-display);
    padding: 0.6rem 1.2rem;
    border-radius: 999px;
    background: rgba(10, 10, 11, 0.75);
    border: 1px solid var(--color-border);
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
    gap: 1rem;
}

.gallery img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.section-tight {
    padding: 1rem 0 2rem;
}

/* Open-source call-out right below the OpenPrintSense hero */
.oss-band {
    display: grid;
    grid-template-columns: 1.2fr 1fr auto;
    gap: 2rem;
    align-items: center;
    padding: 2rem;
    border-radius: var(--radius-xl);
    border: 1px solid rgba(159, 220, 234, 0.35);
    background: linear-gradient(120deg, rgba(63, 182, 211, 0.14), rgba(159, 220, 234, 0.04));
}

.oss-band .eyebrow {
    margin-bottom: 0.4rem;
}

.oss-band .section-title {
    margin-bottom: 0.5rem;
}

.oss-band p {
    color: var(--color-text-muted);
}

@media (max-width: 900px) {
    .oss-band {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .oss-band .btn {
        justify-self: start;
    }
}

/* --- 3D viewer (OpenPrintSense) ----------------------------------------- */
.viewer {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 1.25rem;
    align-items: stretch;
}

.viewer-stage {
    display: flex;
    flex-direction: column;
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    background: var(--color-bg-card);
    overflow: hidden;
}

/* Toolbar above the canvas */
.viewer-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
}

.segmented {
    display: inline-flex;
    padding: 3px;
    border-radius: 999px;
    background: #0b0d0f;
    border: 1px solid var(--color-border);
}

.segmented button,
.toolbar-reset {
    font: 600 0.85rem var(--font-body);
    color: var(--color-text-muted);
    background: transparent;
    border: 0;
    border-radius: 999px;
    padding: 0.4rem 0.9rem;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.segmented button:hover,
.toolbar-reset:hover {
    color: var(--color-text);
}

.segmented button[aria-pressed="true"] {
    background: linear-gradient(120deg, var(--accent-1), var(--accent-2));
    color: #0a0a0b;
}

.toolbar-reset {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border: 1px solid var(--color-border);
}

.toolbar-reset svg {
    width: 15px;
    height: 15px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.viewer-canvas-wrap {
    position: relative;
    flex: 1;
    min-height: 480px;
    background: radial-gradient(ellipse at 50% 40%, #2a3d45, #0e1214 80%);
}

.viewer-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    cursor: grab;
    touch-action: none;
}

.viewer-canvas:active {
    cursor: grabbing;
}

.viewer-status {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    color: var(--color-text-muted);
    pointer-events: none;
}

/* Component list + detail card */
.viewer-parts {
    display: flex;
    flex-direction: column;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.viewer-parts-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
}

.viewer-parts-title .count {
    font: 600 0.75rem var(--font-body);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    padding: 0.05rem 0.5rem;
}

.part-list {
    list-style: none;
    padding: 0.5rem;
    display: grid;
    gap: 2px;
}

.part-row {
    width: 100%;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 0.7rem;
    padding: 0.55rem 0.7rem;
    background: transparent;
    color: var(--color-text);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font: 500 0.92rem var(--font-body);
    text-align: left;
    cursor: pointer;
    transition: background var(--transition-fast), border-color var(--transition-fast);
}

.part-row:hover {
    background: var(--color-bg-secondary);
}

.part-row[aria-pressed="true"] {
    border-color: var(--accent-1);
    background: rgba(63, 182, 211, 0.1);
}

.part-tag {
    font-size: 0.72rem;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.part-swatch {
    width: 14px;
    height: 14px;
    border-radius: 4px;
    flex: none;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.15);
}

/* Keep in sync with MESH_STYLES in assets/js/ops-viewer.js */
.part-swatch--base { background: var(--ops-1); }
.part-swatch--sensor { background: var(--ops-sensor); }
.part-swatch--connector { background: linear-gradient(135deg, #f0d27a, #b8902e); }
.part-swatch--wire { background: linear-gradient(135deg, #eeeeee 50%, #1d1d21 50%); }
.part-swatch--xiao { background: #1f2329; }
.part-swatch--mount { background: #3d3d44; }
.part-swatch--lid { background: #6b6b78; }

.part-detail {
    margin: auto 0.75rem 0.75rem;
    padding: 1rem;
    min-height: 8.5rem;
    border-radius: var(--radius-lg);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
}

.part-detail h4 {
    font: 600 0.95rem var(--font-display);
    margin-bottom: 0.4rem;
    color: var(--accent-1);
}

.part-detail p {
    color: var(--color-text-muted);
    font-size: 0.88rem;
}

.part-hint {
    font-style: italic;
}

@media (max-width: 900px) {
    .viewer {
        grid-template-columns: 1fr;
    }

    .viewer-canvas-wrap {
        min-height: 360px;
    }

    .toolbar-reset {
        margin-left: 0;
    }
}

/* --- Use cases (OpenPrintSense) ----------------------------------------- */
.use-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
    gap: 1rem;
}

.use-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.4rem;
    transition: border-color var(--transition-base), transform var(--transition-base);
}

.use-card:hover {
    border-color: rgba(159, 220, 234, 0.45);
    transform: translateY(-2px);
}

.use-icon {
    width: 40px;
    height: 40px;
    padding: 8px;
    border-radius: 12px;
    background: rgba(63, 182, 211, 0.12);
    fill: none;
    stroke: var(--accent-1);
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
    margin-bottom: 0.9rem;
}

.use-card h3 {
    font-size: 1.05rem;
    margin-bottom: 0.4rem;
}

.use-card p {
    color: var(--color-text-muted);
    font-size: 0.93rem;
}

.hw-list {
    max-width: 760px;
}

/* --- Phone app mock (OpenPrintSense) ------------------------------------ */
.app-section {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 3rem;
    align-items: center;
}

@media (max-width: 900px) {
    .app-section {
        grid-template-columns: 1fr;
        justify-items: center;
    }
}

.finger-slider {
    display: grid;
    gap: 0.5rem;
    max-width: 420px;
    font-weight: 600;
}

.finger-slider input {
    width: 100%;
    accent-color: var(--ops-2);
}

.finger-scale {
    display: flex;
    justify-content: space-between;
    font-weight: 400;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.phone {
    width: 320px;
    max-width: 100%;
    padding: 12px;
    border-radius: 44px;
    background: #050506;
    border: 1px solid #333;
    box-shadow: var(--shadow-lg), 0 0 0 6px #18181b;
}

/* Colors taken from the Android app (fragment_control.xml) */
.phone-screen {
    height: 600px;
    border-radius: 34px;
    overflow: hidden;
    background: #1a1a2e;
    color: #e0e0e0;
    display: flex;
    flex-direction: column;
    font-size: 14px;
}

.app-titlebar {
    padding: 1.5rem 1.25rem 0.75rem;
    font: 700 1.15rem var(--font-body);
}

.app-tabs {
    display: flex;
    border-bottom: 1px solid #2d3748;
}

.app-tabs button {
    flex: 1;
    padding: 0.6rem;
    background: none;
    border: 0;
    border-bottom: 2px solid transparent;
    color: #94a3b8;
    font: 600 0.85rem var(--font-body);
    cursor: pointer;
}

.app-tabs button[aria-selected="true"] {
    color: #00d9ff;
    border-bottom-color: #00d9ff;
}

.app-body {
    flex: 1;
    overflow-y: auto;
    padding: 0.9rem;
    display: grid;
    align-content: start;
    gap: 0.7rem;
}

.app-card {
    background: #16213e;
    border-radius: 16px;
    padding: 0.9rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.35);
}

.app-row,
.app-status {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
}

.app-status-text {
    flex: 1;
}

.app-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ef4444;
    flex: none;
}

.app-indicator.is-connected {
    background: #22c55e;
}

.app-muted {
    color: #94a3b8;
    font-size: 0.8rem;
}

.app-accent {
    color: #00d9ff;
    font-weight: 700;
}

.app-stretch {
    display: grid;
    justify-items: center;
    gap: 0.35rem;
}

.app-label {
    color: #94a3b8;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.app-value {
    color: #00d9ff;
    font: 700 3.25rem var(--font-body);
    line-height: 1.1;
}

.app-progress {
    width: 100%;
    height: 14px;
    border-radius: 7px;
    background: #2d3748;
    overflow: hidden;
}

.app-progress-bar {
    width: 0;
    height: 100%;
    background: #00d9ff;
    transition: width 120ms linear;
}

.app-calibration {
    display: grid;
    gap: 0.6rem;
}

.app-instruction {
    font-size: 0.85rem;
    color: #e0e0e0;
}

.app-button {
    background: #0f4c75;
    color: #fff;
    border: 0;
    border-radius: 6px;
    padding: 0.5rem 0.8rem;
    font: 600 0.8rem var(--font-body);
    text-transform: uppercase;
    cursor: pointer;
}

.app-button:disabled {
    opacity: 0.4;
    cursor: default;
}

.app-button-wide {
    width: 100%;
}

.app-cal-buttons .app-button {
    flex: 1;
}

.app-game-card {
    display: grid;
    gap: 0.5rem;
}

.app-game-title {
    color: #fff;
    font-size: 1rem;
}

.app-game-canvas {
    width: 100%;
    height: 260px;
    border-radius: 8px;
    background: #0d1117;
    touch-action: none;
    cursor: ew-resize;
}

.app-game-message {
    text-align: center;
    font-weight: 600;
    color: #f472b6;
}

.app-game-card .app-row {
    flex-direction: column-reverse;
    align-items: stretch;
}

.app-score {
    color: #fff;
    font-weight: 700;
    font-size: 0.85rem;
    text-align: center;
}

/* --- Legal pages (markup from includes/legal/*.html) --------------------- */
.legal-container {
    max-width: 800px;
    padding-top: calc(var(--nav-height) + 3rem);
    padding-bottom: 4rem;
}

.legal-header {
    margin-bottom: 2.5rem;
}

.legal-header h1 {
    font-size: clamp(2rem, 5vw, 2.75rem);
    margin-bottom: 0.5rem;
}

.legal-header p,
.legal-section p,
.legal-section li,
.legal-section address {
    color: var(--color-text-muted);
}

.legal-section {
    margin-bottom: 2rem;
}

.legal-section h2 {
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
}

.legal-section h3 {
    font-size: 1.1rem;
    margin: 1rem 0 0.5rem;
}

.legal-section p,
.legal-section ul,
.legal-section address {
    margin-bottom: 0.75rem;
    font-style: normal;
}

.legal-section ul {
    padding-left: 1.25rem;
}

.legal-section a {
    color: var(--color-accent-light);
}

.legal-container > .note {
    margin: 0 0 2rem;
}

/* --- Footer ---------------------------------------------------------------- */
.footer {
    border-top: 1px solid var(--color-border);
    padding: 2rem 0;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 1rem;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
}

.footer-links a {
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--color-text);
}

/* --- Scroll reveal (class "visible" set by main.js) ---------------------- */
.js .reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 600ms ease, transform 600ms ease;
}

.js .reveal.visible {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *, *::before, *::after {
        transition: none !important;
        animation: none !important;
    }

    .js .reveal {
        opacity: 1;
        transform: none;
    }
}