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

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background-color: #f0f2f5;
    color: #333;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* ===== Navigation ===== */
header {
    background-color: #1a1a2e;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1100px;
    margin: 0 auto;
    height: 60px;
}

.nav-logo {
    color: #e8e8e8;
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: bold;
    letter-spacing: 0.05em;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: #b0b8cc;
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: #ffffff;
}

/* ===== Hero (Startseite) ===== */
.hero {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
}

.hero-content {
    width: 100%;
    max-width: 980px;
}

.hero-content h1 {
    font-size: 2.2rem;
    margin-bottom: 1rem;
    color: #1a1a2e;
}

.hero-content > p {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== Card Grid ===== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.card {
    background: #ffffff;
    border-radius: 12px;
    padding: 2rem 1.5rem;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.14);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.card h2 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #1a1a2e;
}

.card p {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.5;
}

/* ===== Content Pages ===== */
.page-main {
    flex: 1;
    max-width: 900px;
    margin: 3rem auto;
    padding: 0 2rem;
    width: 100%;
}

.page-header {
    margin-bottom: 2.5rem;
    border-bottom: 3px solid #1a1a2e;
    padding-bottom: 1rem;
}

.page-header h1 {
    font-size: 2rem;
    color: #1a1a2e;
}

.page-header p {
    color: #666;
    margin-top: 0.4rem;
}

/* ===== Section ===== */
.section {
    background: #ffffff;
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 12px rgba(0,0,0,0.07);
}

.section h2 {
    font-size: 1.4rem;
    color: #1a1a2e;
    margin-bottom: 0.8rem;
}

.section p {
    color: #555;
    line-height: 1.7;
    margin-bottom: 0.6rem;
}

.section ul, .section ol {
    margin-left: 1.4rem;
    color: #555;
    line-height: 1.8;
}

.tag {
    display: inline-block;
    background: #e8eaf6;
    color: #3949ab;
    border-radius: 20px;
    padding: 0.2rem 0.75rem;
    font-size: 0.8rem;
    margin: 0.2rem 0.2rem 0.2rem 0;
    font-weight: 500;
}

/* ===== Tool Title Row ===== */
/* ===== Back Link ===== */
.back-link {
    display: inline-block;
    color: #3949ab;
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: 0.6rem;
    transition: color 0.2s;
}

.back-link:hover {
    color: #1a237e;
    text-decoration: underline;
}

/* ===== Tool Title Row ===== */
.tool-title-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.2rem;
}

.tool-icon {
    width: 56px;
    height: 56px;
    border-radius: 10px;
    flex-shrink: 0;
}

.tool-title-row h2 {
    margin-bottom: 0.3rem;
}

.github-link {
    display: inline-block;
    color: #3949ab;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.github-link:hover {
    color: #1a237e;
    text-decoration: underline;
}

.section h3 {
    font-size: 1.1rem;
    color: #1a1a2e;
    margin: 1.4rem 0 0.6rem;
}

/* ===== Screenshots ===== */
.screenshot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.2rem;
    margin: 1rem 0 1.4rem;
}

.screenshot {
    margin: 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.12);
    background: #f8f9fa;
}

.screenshot img {
    width: 100%;
    display: block;
    border-bottom: 1px solid #e0e0e0;
}

.screenshot figcaption {
    padding: 0.5rem 0.75rem;
    font-size: 0.8rem;
    color: #666;
    text-align: center;
}

/* ===== Footer ===== */
footer {
    background-color: #1a1a2e;
    color: #888;
    text-align: center;
    padding: 1.2rem;
    font-size: 0.85rem;
}

/* ===== Tetris ===== */
.game-page-main {
    max-width: 1100px;
}

.tetris-layout {
    display: grid;
    grid-template-columns: minmax(300px, 1fr) 320px;
    gap: 1.5rem;
    align-items: start;
}

.tetris-board-panel {
    display: flex;
    justify-content: center;
    padding: 1rem;
    border-radius: 16px;
    background: linear-gradient(180deg, #19253a 0%, #0f1728 100%);
}

.tetris-board-stack {
    width: 100%;
    display: grid;
    justify-items: center;
    gap: 1rem;
}

.tetris-board {
    width: min(100%, 300px);
    height: auto;
    display: block;
    border: 4px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    background: #101828;
    box-shadow: 0 14px 30px rgba(15, 23, 40, 0.3);
    touch-action: none;
}

.tetris-touch-controls {
    width: min(100%, 300px);
    display: grid;
    gap: 0.65rem;
}

.tetris-compact-hud {
    display: none;
    width: min(100%, 300px);
    border-radius: 12px;
    background: rgba(10, 20, 36, 0.86);
    color: #eef3ff;
    border: 1px solid rgba(255, 255, 255, 0.16);
    padding: 0.35rem 0.5rem;
    font-size: 0.78rem;
    font-weight: 600;
    justify-content: space-between;
    gap: 0.4rem;
}

.tetris-touch-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.65rem;
}

.tetris-touch-button {
    border: none;
    border-radius: 16px;
    min-height: 54px;
    padding: 0.85rem 0.9rem;
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
    font: inherit;
    font-weight: 700;
    letter-spacing: 0.01em;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 8px 18px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(8px);
    touch-action: manipulation;
    cursor: pointer;
}

.tetris-touch-button:active {
    transform: translateY(1px) scale(0.99);
}

.tetris-touch-rotate {
    background: rgba(176, 108, 255, 0.28);
}

.tetris-touch-drop {
    background: rgba(57, 197, 187, 0.28);
}

.tetris-touch-hard-drop {
    background: rgba(255, 90, 95, 0.28);
}

.tetris-sidebar {
    display: grid;
    gap: 1rem;
}

.tetris-status-card {
    background: #f7f9fc;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 1rem 1.1rem;
}

.tetris-status-card h2 {
    margin-bottom: 0.8rem;
}

.tetris-stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.45rem 0;
    border-bottom: 1px solid #e2e8f0;
}

.tetris-stat-row:last-child {
    border-bottom: none;
}

.next-piece-board {
    width: 120px;
    height: 120px;
    display: block;
    border-radius: 10px;
    background: #101828;
    border: 3px solid rgba(255, 255, 255, 0.08);
}

.tetris-controls-list {
    margin-left: 1.2rem;
    color: #555;
    line-height: 1.8;
}

.tetris-actions {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.tetris-button {
    border: none;
    border-radius: 999px;
    padding: 0.8rem 1.2rem;
    background: #1a1a2e;
    color: #fff;
    font: inherit;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, background-color 0.2s;
    box-shadow: 0 8px 18px rgba(26, 26, 46, 0.16);
}

.tetris-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 22px rgba(26, 26, 46, 0.22);
}

.tetris-button-secondary {
    background: #3949ab;
}

.tetris-message {
    margin-bottom: 0;
    font-weight: 600;
    color: #1a1a2e;
}

.tetris-page {
    overflow-x: hidden;
}

@media (max-width: 1024px) {
    header {
        padding: 0 1.2rem;
    }

    .hero {
        padding: 3rem 1.5rem;
    }

    .page-main {
        margin: 2rem auto;
        padding: 0 1.4rem;
    }

    .screenshot-grid {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    }
}

@media (max-width: 900px) {
    .hero-content h1 {
        font-size: 1.9rem;
    }

    .hero-content > p {
        margin-bottom: 2rem;
    }

    .card-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }

    .tetris-layout {
        grid-template-columns: 1fr;
    }

    .tetris-board-panel {
        overflow-x: auto;
    }

    .tetris-sidebar {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }

    .tetris-actions,
    .tetris-message {
        grid-column: 1 / -1;
    }

    body.tetris-page {
        height: 100dvh;
        overflow: hidden;
    }

    body.tetris-page footer {
        display: none;
    }

    body.tetris-page header {
        padding: 0 0.7rem;
    }

    body.tetris-page nav {
        height: 52px;
        min-height: 52px;
        padding: 0;
    }

    body.tetris-page .page-main {
        margin: 0.45rem auto;
        padding: 0 0.7rem;
        width: 100%;
    }

    body.tetris-page .page-header {
        margin-bottom: 0.45rem;
        padding-bottom: 0.35rem;
    }

    body.tetris-page .page-header h1 {
        font-size: 1.2rem;
    }

    body.tetris-page .page-header p {
        display: none;
    }

    body.tetris-page .section.tetris-layout {
        margin-bottom: 0;
        padding: 0.6rem;
        gap: 0.55rem;
    }

    body.tetris-page .tetris-board-panel {
        padding: 0.5rem;
    }

    body.tetris-page .tetris-board-stack {
        gap: 0.5rem;
    }

    body.tetris-page .tetris-help-card {
        display: none;
    }

    body.tetris-page .tetris-sidebar {
        gap: 0.5rem;
        grid-template-columns: 1fr;
    }

    body.tetris-page .tetris-status-card {
        padding: 0.65rem 0.8rem;
    }

    body.tetris-page .tetris-status-card h2 {
        font-size: 0.95rem;
        margin-bottom: 0.45rem;
    }

    body.tetris-page .tetris-stat-row {
        padding: 0.28rem 0;
    }

    body.tetris-page .next-piece-board {
        width: 88px;
        height: 88px;
    }

    body.tetris-page .tetris-actions {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.55rem;
    }

    body.tetris-page .tetris-button {
        width: 100%;
        padding: 0.62rem 0.7rem;
        font-size: 0.9rem;
        box-shadow: 0 4px 10px rgba(26, 26, 46, 0.16);
    }

    body.tetris-page .tetris-touch-controls {
        gap: 0.45rem;
    }

    body.tetris-page .tetris-touch-row {
        gap: 0.45rem;
    }

    body.tetris-page .tetris-touch-button {
        min-height: 48px;
        padding: 0.55rem 0.45rem;
        font-size: 0.84rem;
    }

    body.tetris-page .tetris-message {
        font-size: 0.82rem;
        line-height: 1.25;
    }
}

@media (max-width: 700px) {
    nav {
        height: auto;
        min-height: 60px;
        padding: 0.7rem 0;
        flex-wrap: wrap;
        row-gap: 0.5rem;
    }

    .nav-links {
        width: 100%;
        justify-content: center;
        gap: 1.1rem;
        flex-wrap: wrap;
    }

    .hero {
        align-items: flex-start;
    }

    .hero-content h1 {
        font-size: 1.7rem;
    }

    .hero-content > p {
        font-size: 1rem;
    }

    .page-header h1 {
        font-size: 1.6rem;
        line-height: 1.25;
    }

    .tool-title-row {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.8rem;
    }

    .card {
        padding: 1.35rem 1.1rem;
    }

    .section {
        padding: 1.25rem;
    }

    .section h2 {
        font-size: 1.2rem;
    }

    .screenshot-grid {
        grid-template-columns: 1fr;
    }

    .tetris-sidebar {
        grid-template-columns: 1fr;
    }

    .tetris-actions {
        display: grid;
        grid-template-columns: 1fr;
    }

    .tetris-button {
        width: 100%;
    }

    .project-section {
        padding: 1.05rem;
    }

    .project-section .tool-title-row h2 {
        font-size: 1.12rem;
        line-height: 1.35;
    }

    .project-section p,
    .project-section li {
        line-height: 1.6;
    }

    .project-section ul,
    .project-section ol {
        margin-left: 1rem;
    }

    .project-section .tag {
        font-size: 0.75rem;
        padding: 0.18rem 0.62rem;
    }
}

@media (max-width: 560px) {
    header {
        margin: 0;
        padding: 0.2rem;

    nav {
        flex-direction: column;
        justify-content: center;
        height: auto;
        padding: 0.9rem 0;
        gap: 0.6rem;
    }

    .nav-logo {
        font-size: 1.05rem;
    }

    .nav-links {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-links a {
        font-size: 0.9rem;
    }

    .page-main {
        padding: 0 1rem;
        margin: 1.4rem auto;
    }

    .hero {
        padding: 1.8rem 1rem;
    }

    .hero-content h1 {
        font-size: 1.5rem;
    }

    .card-grid {
        gap: 1rem;
        grid-template-columns: 1fr;
    }

    .section {
        padding: 1.2rem;
    }

    .section ul,
    .section ol {
        margin-left: 1.1rem;
    }

    .tetris-board {
        width: min(100%, 280px);
    }

    .tetris-touch-controls {
        width: min(100%, 280px);
    }

    .tetris-touch-button {
        min-height: 58px;
        font-size: 0.95rem;
    }

    body.tetris-page header {
        padding: 0 0.55rem;
    }

    body.tetris-page nav {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        gap: 0.4rem;
        height: 48px;
        min-height: 48px;
    }

    body.tetris-page .nav-logo {
        font-size: 0.95rem;
        letter-spacing: 0.02em;
    }

    body.tetris-page .nav-links {
        width: auto;
        gap: 0.6rem;
        flex-wrap: nowrap;
    }

    body.tetris-page .nav-links a {
        font-size: 0.78rem;
    }

    body.tetris-page .page-main {
        margin: 0.35rem auto;
        padding: 0 0.5rem;
    }

    body.tetris-page .page-header h1 {
        font-size: 1.06rem;
    }

    body.tetris-page .section.tetris-layout {
        padding: 0.45rem;
    }

    body.tetris-page .tetris-board-panel {
        padding: 0.42rem;
    }

    body.tetris-page .tetris-status-card {
        padding: 0.55rem 0.65rem;
    }

    body.tetris-page .tetris-status-card h2 {
        font-size: 0.88rem;
    }

    body.tetris-page .tetris-actions {
        grid-template-columns: 1fr 1fr;
    }

    body.tetris-page .tetris-button {
        padding: 0.54rem 0.55rem;
        font-size: 0.82rem;
    }

    body.tetris-page .tetris-touch-controls {
        width: min(100%, 250px);
    }

    body.tetris-page .tetris-touch-button {
        min-height: 42px;
        font-size: 0.76rem;
        border-radius: 12px;
    }

    body.tetris-page .next-piece-board {
        width: 80px;
        height: 80px;
    }

    body.tetris-page .tetris-message {
        font-size: 0.74rem;
    }
}

@media (max-width: 420px) {
    .hero-content h1 {
        font-size: 1.35rem;
    }

    .page-header h1 {
        font-size: 1.35rem;
    }

    .page-header p,
    .section p,
    .section li {
        font-size: 0.94rem;
    }

    .tetris-board {
        width: min(100%, 260px);
    }

    .tetris-touch-controls {
        width: min(100%, 260px);
    }

    .tetris-touch-button {
        min-height: 54px;
        font-size: 0.88rem;
        padding: 0.75rem 0.7rem;
    }

    body.tetris-page .nav-logo {
        font-size: 0.86rem;
    }

    body.tetris-page .nav-links {
        gap: 0.45rem;
    }

    body.tetris-page .nav-links a {
        font-size: 0.72rem;
    }

    body.tetris-page .page-header h1 {
        font-size: 0.96rem;
    }

    body.tetris-page .tetris-touch-controls {
        width: min(100%, 228px);
    }

    body.tetris-page .tetris-compact-hud {
        display: flex;
        width: min(100%, 228px);
    }

    body.tetris-page .tetris-sidebar {
        display: none;
    }

    body.tetris-page .section.tetris-layout {
        gap: 0.35rem;
        padding: 0.3rem;
        border-radius: 10px;
    }

    body.tetris-page .tetris-board-panel {
        padding: 0.25rem;
        border-radius: 10px;
    }

    body.tetris-page .tetris-board-stack {
        gap: 0.28rem;
    }

    body.tetris-page .tetris-layout {
        grid-template-columns: 1fr;
    }

    body.tetris-page .tetris-touch-button {
        min-height: 40px;
        font-size: 0.72rem;
    }

    body.tetris-page .tetris-button {
        font-size: 0.76rem;
    }

    body.tetris-page .next-piece-board {
        width: 72px;
        height: 72px;
    }

    body.tetris-page .tetris-message {
        display: none;
    }
}


@media (max-width: 360px) {
    body.tetris-page .nav-links a {
        font-size: 0.68rem;
    }

    body.tetris-page .tetris-touch-controls {
        width: min(100%, 210px);
    }

    body.tetris-page .tetris-compact-hud {
        width: min(100%, 210px);
        font-size: 0.72rem;
        padding: 0.3rem 0.45rem;
    }

    body.tetris-page .tetris-touch-button {
        min-height: 36px;
        font-size: 0.68rem;
        padding: 0.45rem 0.35rem;
    }
}

/* ===== Tetris Mobile Reset (Playability First) ===== */
@media (max-width: 900px) {
    body.tetris-page {
        height: 100dvh;
        overflow: hidden;
    }

    body.tetris-page footer,
    body.tetris-page .tetris-sidebar,
    body.tetris-page .tetris-actions,
    body.tetris-page .tetris-message,
    body.tetris-page .page-header p {
        display: none;
    }

    body.tetris-page header {
        padding: 0 0.5rem;
    }

    body.tetris-page nav {
        height: 46px;
        min-height: 46px;
        display: flex;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: 0.4rem;
        padding: 0;
    }

    body.tetris-page .nav-logo {
        font-size: 0.9rem;
    }

    body.tetris-page .nav-links {
        width: auto;
        gap: 0.55rem;
        flex-wrap: nowrap;
    }

    body.tetris-page .nav-links a {
        font-size: 0.76rem;
    }

    body.tetris-page .page-main {
        margin: 0;
        padding: 0.25rem 0.5rem;
        min-height: calc(100dvh - 46px);
        display: flex;
        flex-direction: column;
    }

    body.tetris-page .page-header {
        border: none;
        padding: 0;
        margin: 0 0 0.2rem;
        text-align: center;
    }

    body.tetris-page .page-header h1 {
        font-size: 0.98rem;
        line-height: 1.2;
    }

    body.tetris-page .section.tetris-layout {
        flex: 1;
        margin: 0;
        padding: 0.25rem;
        display: grid;
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        gap: 0.25rem;
        overflow: hidden;
    }

    body.tetris-page .tetris-board-panel {
        padding: 0.25rem;
        border-radius: 10px;
        overflow: hidden;
    }

    body.tetris-page .tetris-board-stack {
        gap: 0.28rem;
        width: 100%;
        height: 100%;
    }

    body.tetris-page .tetris-compact-hud {
        display: flex;
        width: min(100%, 320px);
    }

    body.tetris-page .tetris-board {
        width: min(74vw, 320px);
        height: auto;
        max-height: 46dvh;
    }

    body.tetris-page .tetris-touch-controls {
        width: min(95vw, 320px);
        gap: 0.4rem;
    }

    body.tetris-page .tetris-touch-row {
        gap: 0.4rem;
    }

    body.tetris-page .tetris-touch-button {
        min-height: 42px;
        padding: 0.46rem 0.35rem;
        font-size: 0.76rem;
        border-radius: 11px;
    }
}

/* ===== Tetris: Desktop Restore + Dedicated Mobile Portrait Mode ===== */
@media (min-width: 901px) {
    body.tetris-page header,
    body.tetris-page .page-header,
    body.tetris-page .tetris-sidebar,
    body.tetris-page .tetris-actions,
    body.tetris-page .tetris-message,
    body.tetris-page footer {
        display: block;
    }

    body.tetris-page .tetris-compact-hud,
    body.tetris-page .tetris-touch-controls {
        display: none;
    }

    body.tetris-page {
        background: #f0f2f5;
    }

    body.tetris-page .page-main {
        margin: 3rem auto;
        padding: 0 2rem;
        min-height: 0;
    }

    body.tetris-page .section.tetris-layout {
        padding: 2rem;
        margin-bottom: 1.5rem;
        overflow: visible;
        background: #ffffff;
        box-shadow: 0 2px 12px rgba(0,0,0,0.07);
    }

    body.tetris-page .tetris-board {
        width: 300px;
        max-height: none;
    }
}

@media (max-width: 900px) {
    body.tetris-page {
        height: 100dvh;
        overflow: hidden;
        background: #0f1728;
    }

    body.tetris-page header,
    body.tetris-page .page-header,
    body.tetris-page .tetris-sidebar,
    body.tetris-page .tetris-actions,
    body.tetris-page .tetris-message,
    body.tetris-page footer {
        display: none;
    }

    body.tetris-page .page-main {
        margin: 0;
        padding: 0.35rem;
        min-height: 100dvh;
        max-width: none;
        width: 100%;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    body.tetris-page .section.tetris-layout {
        margin: 0;
        padding: 0.18rem;
        border-radius: 12px;
        background: transparent;
        box-shadow: none;
        display: grid;
        grid-template-columns: 1fr;
        gap: 0.2rem;
        overflow: hidden;
    }

    body.tetris-page .tetris-board-panel {
        padding: 0.12rem;
        border-radius: 12px;
        background: linear-gradient(180deg, #19253a 0%, #0f1728 100%);
        overflow: hidden;
    }

    body.tetris-page .tetris-board-stack {
        gap: 0.2rem;
    }

    body.tetris-page .tetris-compact-hud {
        display: flex;
        width: min(95vw, 340px);
        margin: 0 auto;
    }

    body.tetris-page .tetris-board {
        width: min(74vw, 340px);
        height: auto;
        max-height: 58dvh;
        margin: 0 auto;
    }

    body.tetris-page .tetris-touch-controls {
        display: grid;
        width: min(95vw, 340px);
        margin: 0 auto;
        gap: 0.28rem;
    }

    body.tetris-page .tetris-touch-row {
        gap: 0.28rem;
    }

    body.tetris-page .tetris-touch-button {
        min-height: 38px;
        padding: 0.38rem 0.28rem;
        font-size: 0.74rem;
        border-radius: 11px;
    }
}

/* 390 x 844 Klasse */
@media (max-width: 390px) {
    body.tetris-page .page-main {
        padding: 0.16rem;
    }

    body.tetris-page .tetris-compact-hud {
        width: min(96vw, 300px);
        font-size: 0.74rem;
        padding: 0.3rem 0.45rem;
    }

    body.tetris-page .tetris-board {
        width: min(76vw, 300px);
        max-height: 56dvh;
    }

    body.tetris-page .tetris-touch-controls {
        width: min(96vw, 300px);
    }

    body.tetris-page .tetris-touch-button {
        min-height: 36px;
        font-size: 0.7rem;
    }
}

/* 360 x 640 Klasse */
@media (max-width: 360px) {
    body.tetris-page .page-main {
        padding: 0.14rem;
    }

    body.tetris-page .tetris-compact-hud {
        width: min(96vw, 260px);
        font-size: 0.7rem;
        padding: 0.28rem 0.38rem;
    }

    body.tetris-page .tetris-board {
        width: min(72vw, 240px);
        max-height: 54dvh;
    }

    body.tetris-page .tetris-touch-controls {
        width: min(96vw, 260px);
    }

    body.tetris-page .tetris-touch-button {
        min-height: 34px;
        font-size: 0.66rem;
        padding: 0.34rem 0.22rem;
    }
}

/* 320 x 568 Klasse */
@media (max-width: 320px) {
    body.tetris-page .page-main {
        padding: 0.1rem;
    }

    body.tetris-page .section.tetris-layout {
        padding: 0.12rem;
        gap: 0.18rem;
    }

    body.tetris-page .tetris-compact-hud {
        width: min(97vw, 220px);
        font-size: 0.66rem;
        padding: 0.24rem 0.32rem;
    }

    body.tetris-page .tetris-board {
        width: min(68vw, 196px);
        max-height: 52dvh;
    }

    body.tetris-page .tetris-touch-controls {
        width: min(97vw, 220px);
        gap: 0.2rem;
    }

    body.tetris-page .tetris-touch-row {
        gap: 0.2rem;
    }

    body.tetris-page .tetris-touch-button {
        min-height: 30px;
        font-size: 0.6rem;
        padding: 0.28rem 0.18rem;
        border-radius: 9px;
    }
}