/* ===== Shared demo chrome: back button + hero watermark ===== */

html {
    overflow-x: hidden;
    overflow-x: clip;
    max-width: 100%;
}

.demo-cafe,
.demo-plumber,
.demo-builder,
.demo-mechanic {
    overflow-x: hidden;
    overflow-x: clip;
    width: 100%;
    max-width: 100%;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.demo-cafe *,
.demo-cafe *::before,
.demo-cafe *::after,
.demo-plumber *,
.demo-plumber *::before,
.demo-plumber *::after,
.demo-builder *,
.demo-builder *::before,
.demo-builder *::after,
.demo-mechanic *,
.demo-mechanic *::before,
.demo-mechanic *::after {
    box-sizing: border-box;
}

.demo-cafe img,
.demo-plumber img,
.demo-builder img,
.demo-mechanic img {
    max-width: 100%;
    height: auto;
}

.demo-cafe iframe,
.demo-plumber iframe,
.demo-builder iframe,
.demo-mechanic iframe {
    max-width: 100%;
}

.demo-cafe section,
.demo-plumber section,
.demo-builder section,
.demo-mechanic section,
.demo-cafe header,
.demo-plumber header,
.demo-builder header,
.demo-mechanic header {
    min-width: 0;
    max-width: 100%;
}

.demo-menu {
    display: contents;
}

.demo-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    margin: 0;
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
    cursor: pointer;
    flex-shrink: 0;
    -webkit-tap-highlight-color: transparent;
}

.demo-menu-btn span {
    display: block;
    width: 18px;
    height: 2px;
    background: currentColor;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.demo-menu-btn.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.demo-menu-btn.is-open span:nth-child(2) {
    opacity: 0;
}

.demo-menu-btn.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.demo-back {
    position: fixed;
    top: 1.25rem;
    left: 1.25rem;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: rgba(10, 10, 15, 0.85);
    border: 1px solid rgba(0, 212, 255, 0.35);
    color: #fff;
    text-decoration: none;
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.45);
    transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.demo-back svg {
    width: 22px;
    height: 22px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: transform 0.25s ease;
}

.demo-back:hover {
    transform: translateX(-3px);
    background: rgba(0, 212, 255, 0.22);
    border-color: rgba(0, 212, 255, 0.65);
    box-shadow: 0 10px 32px rgba(0, 212, 255, 0.25);
    color: #00d4ff;
}

.demo-back:hover svg {
    transform: translateX(-2px);
}

/* Watermark — on top of hero content */
.kas-hero-watermark {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    z-index: 2;
    overflow: clip;
    contain: paint;
}

.kas-hero-watermark__text {
    font-family: 'Arial Black', 'Arial', sans-serif;
    font-size: clamp(2.6rem, 11vw, 6.5rem);
    font-weight: 900;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    text-align: center;
    line-height: 1.05;
    transform: rotate(-12deg);
    user-select: none;
    white-space: normal;
    max-width: min(90vw, 18em);
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.15);
}

.kas-hero-watermark__text em {
    display: block;
    font-style: normal;
    font-size: 0.44em;
    letter-spacing: 0.26em;
    margin-top: 0.12em;
}

.demo-cafe .kas-hero-watermark__text {
    color: rgba(255, 255, 255, 0.45);
    text-shadow: 0 4px 40px rgba(0, 0, 0, 0.5);
}

.demo-cafe .kas-hero-watermark__text em {
    color: rgba(212, 175, 116, 0.75);
}

.demo-plumber .kas-hero-watermark__text {
    color: rgba(20, 26, 23, 0.08);
    text-shadow: none;
    -webkit-text-stroke: 1px rgba(20, 26, 23, 0.1);
}

.demo-plumber .kas-hero-watermark__text em {
    color: rgba(184, 92, 56, 0.28);
}

.demo-builder .kas-hero-watermark__text {
    color: rgba(247, 243, 234, 0.16);
    text-shadow: 0 4px 40px rgba(0, 0, 0, 0.35);
}

.demo-builder .kas-hero-watermark__text em {
    color: rgba(226, 196, 180, 0.55);
}

.demo-mechanic .kas-hero-watermark__text {
    color: rgba(255, 255, 255, 0.38);
    text-shadow: 0 0 50px rgba(255, 45, 45, 0.35);
}

.demo-mechanic .kas-hero-watermark__text em {
    color: rgba(255, 100, 100, 0.72);
}

@media (max-width: 900px) {
    .demo-back {
        top: 0.65rem;
        left: 0.65rem;
        width: 40px;
        height: 40px;
    }

    .demo-cafe .demo-back { top: 3.15rem; }
    .demo-plumber .demo-back { top: 3.45rem; }
    .demo-mechanic .demo-back { top: 2.9rem; }

    .kas-hero-watermark {
        display: none;
    }

    .demo-menu-btn {
        display: flex;
    }

    .demo-cafe .demo-menu-btn { color: #faf6f1; }
    .demo-plumber .demo-menu-btn { color: #141a17; }
    .demo-builder .demo-menu-btn { color: #f7f3ea; }
    .demo-mechanic .demo-menu-btn { color: #f0f0f0; }

    .demo-cafe .cafe-nav,
    .demo-plumber .cur-nav,
    .demo-builder .hal-nav,
    .demo-mechanic .torque-nav {
        position: relative;
    }

    .demo-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        z-index: 40;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 0.5rem 1.25rem 1.15rem;
        box-shadow: 0 16px 32px rgba(0, 0, 0, 0.18);
    }

    .demo-menu.is-open {
        display: flex;
    }

    .demo-menu ul {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        width: 100%;
        margin: 0;
        padding: 0;
        list-style: none;
    }

    .demo-menu ul a {
        display: block;
        padding: 0.7rem 0;
    }

    .demo-cafe .demo-menu {
        background: #2a1f18;
        color: #faf6f1;
    }

    .demo-plumber .demo-menu {
        background: #f3efe6;
        color: #141a17;
        border-bottom: 1px solid #d4cfc3;
    }

    .demo-builder .demo-menu {
        background: rgba(28, 26, 22, 0.96);
        color: #f7f3ea;
        backdrop-filter: blur(16px);
    }

    .demo-mechanic .demo-menu {
        background: #141414;
        color: #f0f0f0;
        border-bottom: 2px solid #ff2d2d;
    }

    .demo-cafe .demo-menu .cafe-btn,
    .demo-plumber .demo-menu .cur-link,
    .demo-builder .demo-menu .hal-nav__cta,
    .demo-mechanic .demo-menu .torque-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        margin-top: 0.35rem;
        width: 100%;
        text-align: center;
    }
}