/* ==================================================
   NASTAVENÍ
   ================================================== */

:root {
    /* Rámeček finderu */
    --finder-frame-vertical: 5vh;
    --finder-frame-horizontal: 15%;
    --finder-radius: 24px;
    --finder-content-gap: 30px;

    /* Zaostřování */
    --finder-opacity: .20;
    --finder-size: 64px;
    --focus-size: 42vh;
    --focus-y: 50vh;
    --focus-fade: 18vh;
    --sharpness: 0;

    /* Rozostření */
    --blur-max: 5px;
    --blur-focused: 1px;

    /* HUD */
    --finder-hud-scale: 1;
    --finder-menu-clearance: 0px;
    --finder-hud-inset: 18px;
    --finder-hud-gap: 14px;
    --finder-hud-font-size: 30px;

    /* SVG ikony */
    --finder-icon-size: 50px;
    --finder-icon-social-size: 50px;
}

.site-content {
    width: calc(
        100% - 2 * (
            var(--finder-frame-horizontal) +
            var(--finder-content-gap)
        )
    );
}


/* ==================================================
   ZÁKLAD FINDERU
   ================================================== */

.finder {
    position: fixed;
    inset: 0;
    z-index: 25;
    pointer-events: none;
}

.finder-window {
    position: absolute;
    top: calc(
        var(--finder-frame-vertical) +
        var(--finder-menu-clearance)
    );
    right: var(--finder-frame-horizontal);
    bottom: var(--finder-frame-vertical);
    left: var(--finder-frame-horizontal);

    border-radius: var(--finder-radius);
    box-shadow: 0 0 0 100vmax #000;

    pointer-events: none;
}


/* ==================================================
   ROZOSTŘENÍ
   ================================================== */

.blur-all,
.blur-edges {
    position: fixed;
    inset: 0;
    pointer-events: none;
}

.blur-all {
    z-index: 20;

    backdrop-filter: blur(var(--blur-max));
    -webkit-backdrop-filter: blur(var(--blur-max));

    opacity: calc(1 - var(--sharpness));
    transition: opacity .12s linear;
}

.blur-edges {
    z-index: 21;

    backdrop-filter: blur(var(--blur-focused));
    -webkit-backdrop-filter: blur(var(--blur-focused));

    opacity: var(--sharpness);

    -webkit-mask-image: linear-gradient(
        to bottom,
        #000 0,
        #000 calc(
            var(--focus-y) -
            var(--focus-size) / 2 -
            var(--focus-fade)
        ),
        transparent calc(
            var(--focus-y) -
            var(--focus-size) / 2
        ),
        transparent calc(
            var(--focus-y) +
            var(--focus-size) / 2
        ),
        #000 calc(
            var(--focus-y) +
            var(--focus-size) / 2 +
            var(--focus-fade)
        ),
        #000 100%
    );

    mask-image: linear-gradient(
        to bottom,
        #000 0,
        #000 calc(
            var(--focus-y) -
            var(--focus-size) / 2 -
            var(--focus-fade)
        ),
        transparent calc(
            var(--focus-y) -
            var(--focus-size) / 2
        ),
        transparent calc(
            var(--focus-y) +
            var(--focus-size) / 2
        ),
        #000 calc(
            var(--focus-y) +
            var(--focus-size) / 2 +
            var(--focus-fade)
        ),
        #000 100%
    );
}


/* ==================================================
   ZAOSTŘOVACÍ KOLEČKO
   ================================================== */

.finder-crosshair,
.finder-focus-frame {
    position: fixed;
    left: 50%;
    top: var(--focus-y);

    transform: translate(-50%, -50%);

    pointer-events: none;

    transition:
        top .08s linear,
        transform .18s ease-out;
}

.finder-crosshair {
    z-index: 30;

    width: var(--finder-size);
    height: var(--finder-size);

    opacity: var(--finder-opacity);
}

.finder-crosshair svg,
.finder-focus-frame svg {
    display: block;
    width: 100%;
    height: 100%;
}

.finder-focus-frame {
    z-index: 29;

    width: 150px;
    height: 150px;

    opacity: var(--finder-opacity);
}


/* Pulz při zaostření */

.finder-pulse {
    animation: finderPulse .65s ease-out;
}

@keyframes finderPulse {
    0% {
        transform: translate(-50%, -50%) scale(.82);
    }

    45% {
        transform: translate(-50%, -50%) scale(1.16);
    }

    100% {
        transform: translate(-50%, -50%) scale(1);
    }
}


/* ==================================================
   HUD — SPOLEČNÉ VLASTNOSTI
   ================================================== */

.finder-hud {
    position: absolute;
    inset: 0;
    z-index: 40;

    color: #fff;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: 700;

    text-shadow:
        -1px -1px 0 #000,
         1px -1px 0 #000,
        -1px  1px 0 #000,
         1px  1px 0 #000;

    pointer-events: none;
}

.finder-hud a {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    color: #fff;
    text-decoration: none;

    pointer-events: auto;
    opacity: 1;

    transition: opacity .12s ease;
}

.finder-hud a:hover,
.finder-hud a:focus-visible {
    opacity: .7;
}

.finder-hud svg {
    display: block;
}


/* ==================================================
   HORNÍ A DOLNÍ ŘADA
   ================================================== */

.finder-hud-top,
.finder-hud-bottom {
    position: absolute;
    left: var(--finder-hud-inset);
    right: var(--finder-hud-inset);

    display: flex;

    pointer-events: none;

    transform: scale(var(--finder-hud-scale));
}

.finder-hud-top {
    top: var(--finder-hud-inset);
    align-items: center;
    min-height: 30px;

    transform-origin: center top;
}

.finder-hud-bottom {
    bottom: var(--finder-hud-inset);
    align-items: flex-end;

    transform-origin: center bottom;
}

.finder-hud-top-left,
.finder-hud-top-center,
.finder-hud-top-right,
.finder-hud-bottom-left,
.finder-hud-bottom-center,
.finder-hud-bottom-right {
    display: flex;
    align-items: center;
    flex: 1;
}

.finder-hud-top-left,
.finder-hud-bottom-left {
    justify-content: flex-start;
}

.finder-hud-top-center,
.finder-hud-bottom-center {
    justify-content: center;
    gap: var(--finder-hud-gap);
}

.finder-hud-top-right,
.finder-hud-bottom-right {
    justify-content: flex-end;
    gap: var(--finder-hud-gap);
}

.finder-hud-top a,
.finder-hud-bottom a {
    white-space: nowrap;
}

.finder-hud-bottom a {
    font-size: var(--finder-hud-font-size);
    line-height: 1;
}


/* ==================================================
   SVG IKONY
   ================================================== */

.finder-icon {
    display: block;

    width: var(--finder-icon-size);
    height: var(--finder-icon-size);

    object-fit: contain;
}

.finder-icon-battery {
    width: var(--finder-icon-size);
    height: var(--finder-icon-size);
}

.finder-icon-burst {
    width: var(--finder-icon-size);
    height: var(--finder-icon-size);
}

.finder-icon-camera {
    width: var(--finder-icon-size);
    height: var(--finder-icon-size);
}

.finder-icon-social {
    width: var(--finder-icon-social-size);
    height: var(--finder-icon-social-size);
}


/* ==================================================
   TEXTOVÉ / CSS IKONY — POKUD JE JEŠTĚ POUŽÍVÁŠ
   ================================================== */

.finder-battery {
    display: flex;
    align-items: center;
    gap: 3px;

    width: 40px;
    height: 25px;
    padding: 2px;

    border: 2px solid #fff;
    background: #fff;
    box-shadow: 0 0 0 1px #000;
}

.finder-battery::after {
    content: "";

    width: 5px;
    height: 8px;
    margin-right: -12px;

    background: #fff;
}

.finder-battery-level {
    width: 100%;
    height: 100%;
    background: #000;
}

.finder-burst {
    display: inline-flex;
    align-items: center;
    gap: 5px;

    font-size: 35px;
    line-height: 1;
}

.finder-burst-icon {
    position: relative;
    width: 33px;
    height: 27px;
}

.finder-burst-icon::before,
.finder-burst-icon::after {
    content: "";

    position: absolute;
    width: 15px;
    height: 15px;

    border: 2px solid #fff;
    box-shadow:
        1px 1px 0 #000,
        2px 2px 0 #000;
}

.finder-burst-icon::before {
    left: 0;
    top: 6px;
}

.finder-burst-icon::after {
    left: 6px;
    top: 0;
}

.finder-camera {
    position: relative;

    width: 27px;
    height: 19px;

    border: 2px solid #fff;
    border-radius: 2px;

    box-shadow:
        1px 1px 0 #000,
        -1px -1px 0 #000;
}

.finder-camera::before {
    content: "";

    position: absolute;
    left: 5px;
    top: -8px;

    width: 9px;
    height: 5px;

    border: 2px solid #fff;
    border-bottom: 0;

    box-shadow:
        2px 0 0 #000,
        -2px 0 0 #000;
}

.finder-camera::after {
    content: "";

    position: absolute;
    left: 50%;
    top: 50%;

    width: 8px;
    height: 8px;

    transform: translate(-50%, -50%);

    border: 2px solid #fff;
    border-radius: 50%;

    box-shadow:
        1px 1px 0 #000,
        -1px -1px 0 #000;
}

.finder-social {
    width: var(--finder-icon-social-size);
    height: var(--finder-icon-social-size);
}

.finder-social svg {
    width: 100%;
    height: 100%;

    fill: #fff;

    filter:
        drop-shadow(1px 1px 0 #000)
        drop-shadow(-1px -1px 0 #000);
}

.finder-burst {
    font-size: 35px;
}

.finder-hq {
    font-size: 15px;
    letter-spacing: .04em;
}


/* ==================================================
   MENŠÍ OBRAZOVKY
   ================================================== */

@media (max-width: 980px) {
    :root {
        --finder-menu-clearance: 64px;
    }
}

@media (max-width: 980px) {
    :root {
        --finder-frame-vertical: 2vh;
        --finder-frame-horizontal: 2%;

        --blur-max: 7px;
        --blur-focused: .5px;

        --finder-hud-inset: 12px;
        --finder-hud-gap: 9px;
        --finder-hud-font-size: 23px;

        --finder-icon-size: 40px;
        --finder-icon-social-size: 40px;
    }

    .finder {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
    }

    .finder-window {
        top: calc(
            2vh +
            var(--finder-menu-clearance)
        );

        right: 2%;
        bottom: 2vh;
        left: 2%;

        border-radius: 18px;
    }

    .finder-crosshair,
    .finder-focus-frame {
        top: 50%;
    }

    .finder-focus-frame {
        width: 100px;
        height: 100px;
    }

    .finder-hud-top-center,
    .finder-hud-top-right,
    .finder-hud-bottom-center {
        gap: 8px;
    }

    .finder-burst {
        font-size: 13px;
    }

    .finder-camera {
        transform: scale(.85);
    }

    .finder-battery {
        transform: scale(.85);
        transform-origin: left center;
    }

    .site-content {
        width: calc(100% - 28px);
        max-width: 100%;
        padding-left: 0;
        padding-right: 0;
    }

    .blur-all,
    .blur-edges {
        width: 100%;
        max-width: 100%;
        transition-duration: .06s;
    }
}


/* ==================================================
   OMEZENÍ ANIMACÍ
   ================================================== */

@media (prefers-reduced-motion: reduce) {
    .blur-all,
    .blur-edges,
    .finder-crosshair,
    .finder-focus-frame {
        display: none;
    }
}