* {
    margin: 0;
    padding: 0;
    background: #000;
}

nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    padding: 40px 0px;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1 /*   GLASSMORPHISM
    background: rgba(255, 255, 255, 0.2);    
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 30px rgba(0,0,0,0.1);
    filter: blur(1%);
    */
}

#logo_nav {
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-height: 1.8rem;
    background: transparent;
}


/* FOTOMONTÁŽ */

/*** FOTO - TEXT ***/

.start_text h1 {
    margin: 0;
    padding: 2.5rem 0;
    font-size: 6rem;
    line-height: 1;
    font-family: var(--teko-font);
    color: var(--dark-red-color);
}

.start_text {
    background: transparent;
    margin: 2% 20%;
    padding: 2%;
    font-family: var(--sen-font);
    font-weight: 700;
    color: #fff;
    text-align: center;
}

.start_text p:after {
    content: "";
    display: block;
    height: 3vh;
}

#odkaz {
    color: #fff;
    text-decoration: 3px underline var(--dark-red-color);
    transition: all 0.5s ease;
}

#odkaz:hover {
    color: #a3a3a3;
}

/*** FOTO - FOTO ***/
#foto_montaz:after {
    display: block;
    height: 3vh;
}

#foto_montaz img {
    z-index: -1;
    background: transparent;
}


/* piece 1 */
#piece1_mon {
    display: block;
    position: absolute;
    top: 171%;
    left: 22%;
    transform: translate(-50%, -50%);
    max-width: 39.5%;
    transition: all 0.5s;
    z-index: +5;
    transition: all 0.5s ease;
}

#piece1_mon:hover {
    max-width: 37.5%;
    opacity: 0.3;
}

.piece1_overlay {
    position: absolute;
    top: 163%;
    left: 9.5%;
    max-width: 10%;
    background: transparent;
    font-family: var(--sen-font);
    font-weight: 700;
    text-align: left;
    z-index: -5;
    transition: all 0.5s ease;
    filter: brightness(3);
}

.overlay_title {
    background: transparent;
    color: #fff;
    font-size: 1.7rem;
    position: relative;
    text-align: left;
    padding: 0;
    margin: 0;
}

.overlay_description {
    background: transparent;
    color: var(--dark-red-color);
    font-size: 1.5rem;
    padding: 0;
    margin: 0;
}

/* piece 2 */
#piece2_mon {
    display: block;
    position: absolute;
    top: 214%;
    left: 25.5%;
    transform: translate(-50%, -50%);
    max-width: 41%;
    transition: all 0.5s;
}

#piece2_mon:hover {
    max-width: 39%;
    opacity: 0.3;
}

.piece2_overlay {
    position: absolute;
    top: 212%;
    left: 14%;
    max-width: 10%;
    background: transparent;
    font-family: var(--sen-font);
    font-weight: 700;
    text-align: left;
    z-index: -10;
    transition: all 0.5s ease;
    filter: brightness(3);
}

/* piece 3 */
#piece3_mon {
    display: block;
    position: absolute;
    top: 194%;
    left: 52%;
    transform: translate(-50%, -50%);
    max-width: 26%;
    transition: all 0.5s;
}

#piece3_mon:hover {
    max-width: 24%;
    opacity: 0.3;
}

.piece3_overlay {
    position: absolute;
    top: 201%;
    left: 49%;
    max-width: 10%;
    background: transparent;
    font-family: var(--sen-font);
    font-weight: 700;
    text-align: left;
    z-index: -10;
    transition: all 0.5s ease;
    filter: brightness(3);
}

/* piece 4 */
#piece4_mon {
    display: block;
    position: absolute;
    top: 176%;
    left: 79%;
    transform: translate(-50%, -50%);
    max-width: 34.5%;
    transition: all 0.5s;
}

#piece4_mon:hover {
    max-width: 32.5%;
    opacity: 0.3;
}

.piece4_overlay {
    position: absolute;
    top: 163%;
    left: 81.5%;
    max-width: 10%;
    background: transparent;
    font-family: var(--sen-font);
    font-weight: 700;
    text-align: left;
    z-index: -10;
    transition: all 0.5s ease;
    filter: brightness(3);
}

/* piece 5 */
#piece5_mon {
    display: block;
    position: absolute;
    top: 211%;
    left: 77%;
    transform: translate(-50%, -50%);
    max-width: 37.5%;
    transition: all 0.5s;
}

#piece5_mon:hover {
    max-width: 36%;
    opacity: 0.3;
}

.piece5_overlay {
    position: absolute;
    top: 217%;
    left: 63.5%;
    max-width: 10%;
    background: transparent;
    font-family: var(--sen-font);
    font-weight: 700;
    text-align: left;
    z-index: -10;
    transition: all 0.5s ease;
    filter: brightness(3);
}

#vypln {
    content: "";
    position: absolute;
    top: 235%;
    height: 5vh;
    width: 100%;
    background: transparent;
}

/*** NÁHRADNÍ FOTKY ***/
.nahradni_fotky {
    display: none;
    width: 98vw;
    overflow: hidden;
}

.column {
    float: left;
    width: 33.33%;
    margin-bottom: 4%;
    text-align: center;
}

.column img {
    width: 90%;
    border: 1px solid #fff;
}

.column_2 {
    float: left;
    width: 50%;
    margin-bottom: 3%;
}

.column_2 img {
    width: 60%;
    border: 1px solid #fff;
}

#img_4 {
    margin-left: 34%;
}

.row::after {
    content: "";
    clear: both;
    display: table;
}

.albums {
    display: flex;
    flex-wrap: wrap;
}

.album {
    flex-basis: 50%;
    display: block;
    padding: 1rem;
    flex-shrink: 0;
    flex-grow: 0;
    box-sizing: border-box;
    transition: all .1s ease-in;
}

.album:hover {
    opacity: .75;
    scale: 0.975;
}

.album img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border: 1px solid rgba(255, 255, 255, .25);
}

.sponsor img {
    object-fit: contain;
    aspect-ratio: 3/2;
    background-color: white;
}

@media only screen and (max-width: 1010px) {
    .album {
        flex-basis: 100%;
        padding: 1rem 0;
    }

    .sponsor img {
        aspect-ratio: auto;
    }
}