:root {
    --primary-color: #6c757d;
    --primary-hover-color: #858c93;
    --light-text: #adb5bd;    
    --dark-color: #212529;     
    --medium-dark: #343a40;   
    --border-color: #495057;  
    --text-color: #f8f9fa;     
    --white: #fff;
    --red-warning: #dc3545;
}

/* === ZÁKLADNÍ LAYOUT A STYLY === */
html {
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
    font-family: 'Poppins', sans-serif;
    background-color: var(--dark-color);
    color: var(--text-color);
}

main {
    flex-grow: 1;
}
h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 400;
}
a {
    color: var(--primary-color);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
hr {
    border: 0;
    border-top: 1px solid var(--border-color);
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* === HLAVIČKA A PATIČKA === */

.header-container {
    display: flex;
    align-items: center;
    gap: 30px;
    width: 100%;
    max-width: 1920px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Nové styly pro textový blok v hlavičce */
.logo {
    animation: zoomIn1 1s ease-out 0.2s forwards;
}

.page-index .logo {
    animation: zoomIn 1s ease-out 0.2s forwards;
}

.header-text {
    flex-grow: 1;
    text-align: center;
}

.header-text h2 {
    margin: 0;
    font-size: 2em;
    color: var(--white);
	text-shadow: 2px 2px 3px rgba(0, 0, 0, 0.9);
	animation: slideInFromUp1 1s ease-out 0.2s forwards;
}

.header-text h1 {
    margin: 0;
    font-size: 5em;
    color: var(--white);
	text-shadow: 2px 2px 10px black;
	animation: slideInFromUp1 1s ease-out 0.2s forwards;
}	
.page-index .header-text h2 {
	animation: slideInFromUp 1s ease-out 0.2s forwards; 
}

.header-text p {
    margin: 5px 0 0 0;
    color: var(--white);
    font-size: 1.5em;
	text-shadow: 2px 2px 3px black;
	animation: slideInFromDown1 1s ease-out 0.2s forwards;
}
.page-index .header-text p {
	animation: slideInFromDown 1s ease-out 0.2s forwards;
}

.site-header, .site-footer {
    flex-shrink: 0;
}
.site-header {
    background-color: var(--medium-dark);
    padding: 20px 0;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;

    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    background-attachment: scroll;
}
.header-container {
    width: 60%;
    max-width: 1920px;
    margin: 0 auto;
    padding: 0 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo a {
    font-weight: bold;
    font-size: 1.5em;
    text-decoration: none;
    color: var(--text-color);
}
.site-title h1 {
    margin: 0;
    font-size: 1.2em;
    font-weight: normal;
    color: var(--light-text);
}
.site-footer {
    background-color: var(--medium-dark);
    color: var(--light-text);
    padding: 20px 0;
    margin-top: 30px;
    border-top: 1px solid var(--border-color);
}
.footer-container {
    width: 100%;
    max-width: 1920px;
    margin: 0 auto; 
    padding: 0 15px; 
    text-align: center;
}
.footer-container p {
    margin: 0; 
    font-size: 0.9em;
}
/* Kontejner pro navigaci (zarovnání vlevo a vpravo) */
.navigation-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.gallery-navigation {
    display: flex;
    gap: 15px;
}

/* Vzhled navigačních šipek (inspirováno .floating-buttons a) */
.gallery-navigation .nav-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--medium-dark);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    text-decoration: none;
    font-size: 1.2em;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    transition: background-color 0.2s, transform 0.2s;
}

.navigation-bar .nav-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--medium-dark);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    text-decoration: none;
    font-size: 1.2em;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    transition: background-color 0.2s, transform 0.2s;
}
.gallery-navigation .nav-arrow:hover {
    background-color: var(--primary-color);
    transform: scale(1.1);
    text-decoration: none;
}
.navigation-bar .nav-arrow:hover {
    background-color: var(--primary-color);
    transform: scale(1.1);
    text-decoration: none;
}
/* === VEŘEJNÁ ČÁST (FRONTEND) === */
.container {
    max-width: 80%;
    max-width: 85%;
    margin: 20px auto; 
    padding: 0 15px;
}
.galleries-container { 
    display: grid; 
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); 
    gap: 20px;
}

/* Hlavní odkaz/kontejner pro kartu */
.gallery-link { 
    text-decoration: none; 
    color: inherit; 
    display: block; 
    position: relative;
    padding-top: 25px;
}

/* Kontejner pro fotku - nyní bez stínu a přechodu */
.gallery-preview {
    position: relative;
    z-index: 2;
    border-radius: 8px;
    overflow: hidden;
    animation: slide-up 0.6s ease-out forwards;
}

/* Samotná fotka - zde je veškerá magie */
.gallery-preview img {
    width: 90%;
    height: 200px;
    object-fit: cover;
    display: block;
    margin: 0 auto;
    border-radius: 8px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.25);
    position: relative;
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

/* Textový box pod fotkou */
.gallery-preview-content { 
    background-color: var(--text-color);
    color: var(--dark-color);
    text-align: center;
    padding: 15px 15px 15px 15px;
    border-radius: 8px;
    margin-top: -25px;
    position: relative;
    z-index: 1;
}

.gallery-preview-content h3 { 
    margin: 0; 
}

/* FINÁLNÍ HOVER EFEKT - cílící POUZE na fotku */
.gallery-link:hover .gallery-preview img {
    transform: scale(1.112);
    box-shadow: 0 15px 30px rgba(0,0,0,0.4);
}

/* Definice animace vyjetí */
@keyframes slide-up {
    from {
        transform: translateY(80%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}
.gallery-preview-content h3 { 
    margin-top: 0; 
}
.badge {
    position: absolute; 
    top: 10px; 
    right: 10px; 
    padding: 5px 10px;
    border-radius: 12px; 
    font-size: 12px; 
    font-weight: bold;
    color: var(--white); 
    z-index: 10;
}
.badge.new { background-color: #28a745; }
.badge.updated { background-color: var(--primary-color); }
.photo-grid { 
    column-count: 5;
    column-gap: 15px;
    margin-top: 20px;
}
.photo-grid img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}
.photo-grid a {
    display: block;
    width: 100%;
    margin-bottom: 15px;
    break-inside: avoid;
    border-radius: 8px;
    overflow: hidden;
    background-color: var(--medium-dark);
}
.photo-grid a:hover img {
    transform: scale(1.05);
}
.back-link { 
    font-size: 1.1em; 
    display: inline-block;
    margin-bottom: 15px;
}

.is-landscape {
    aspect-ratio: 3 / 2;
}

.is-portrait {
    aspect-ratio: 2 / 3;
}

/* === NÁHLEDY V LIGHTBOXU === */
.lg-thumb-item.active {
    border: 2px solid white !important; 
}
.lg-thumb-item:hover {
    border: 1px solid white !important; 
}
.lg-thumb-item {
    border: none !important;
}
.lg-sub-html {
    display: none !important;
}
/* === ADMINISTRACE === */
.admin-container {
    max-width: 960px; 
    margin: 20px auto; 
    padding: 0 15px;
}
.admin-container .photo-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 20px;
}
.admin-container .header { 
    border-bottom: 1px solid var(--border-color); 
    padding-bottom: 15px; 
    margin-bottom: 20px;
}
.admin-container .logout-link { color: var(--red-warning); }
.admin-container table { 
    width: 100%; 
    border-collapse: collapse; 
    margin-top: 20px; 
}
.admin-container th, .admin-container td { 
    padding: 12px; 
    border-bottom: 1px solid var(--border-color); 
    text-align: left; 
}
.admin-container form label {
    display: block;
    margin-bottom: 5px;
}
.admin-container form input[type="text"],
.admin-container form textarea {
    width: 100%;
    padding: 10px;
    box-sizing: border-box;
    background-color: var(--dark-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
}
.admin-container form button[type="submit"] {
    padding: 10px 15px;
    border: none;
    border-radius: 4px;
    background-color: var(--primary-color);
    color: var(--white);
    cursor: pointer;
    margin-top: 10px;
}

/* Přihlašovací stránka - admin/login.php */
body.login-body { 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    min-height: 100vh; 
    background-color: var(--dark-color); 
}
.login-container { 
    background: var(--medium-dark);
    color: var(--text-color);
    padding: 2em; 
    border-radius: 5px; 
    box-shadow: 0 0 20px rgba(0,0,0,0.5); 
    width: 100%; 
    max-width: 400px; 
}
.login-container .error { 
    color: var(--red-warning); 
    margin-bottom: 10px; 
}

/* Specifické styly pro edit_gallery.php */
.upload-form { 
    background: var(--medium-dark); 
    padding: 20px; 
    border-radius: 5px; 
    margin-bottom: 30px; 
}
.progress-bar-container { 
    width: 100%; 
    background-color: var(--border-color); 
    border-radius: 4px; 
    display: none; 
    margin-top: 10px; 
    overflow: hidden; 
}
.progress-bar { 
    width: 0%; 
    height: 24px; 
    background-color: #28a745; 
    border-radius: 4px; 
    text-align: center; 
    color: white; 
    line-height: 24px; 
    transition: width 0.3s; 
}
#upload-status { margin-top: 10px; }
.admin-container .photo-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
}
.photo-item { 
    border: 1px solid var(--border-color); 
    border-radius: 5px; 
    overflow: hidden; 
    background-color: var(--medium-dark);
    display: flex; 
    flex-direction: column; 
    cursor: grab; 
	flex-basis: calc(20% - 15px);
    flex-grow: 1;
    display: flex;
}
.photo-item:active { cursor: grabbing; }
.photo-item img { 
    width: 100%; 
    height: 120px; 
    object-fit: cover; 
}
.photo-item .actions { 
    padding: 10px; 
    margin-top: auto; 
}
.photo-item .actions form { 
    margin-top: 5px; 
}
.photo-item .actions button { 
    width: 100%; 
    padding: 5px; 
    cursor: pointer; 
}
#save-status { 
    margin-left: 15px; 
    color: #28a745; 
    font-weight: bold; 
    opacity: 0; 
    transition: opacity 0.5s; 
}



/* === Vylepšený a jednotný styl pro tlačítka v adminu === */
.admin-container button,
.admin-container .button-link {
    display: inline-block;
    font-weight: 400;
    color: var(--white);
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    background-color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 0.5rem 1rem;
    font-size: 1rem;
    border-radius: 0.25rem;
    text-decoration: none;
    transition: background-color 0.15s ease-in-out;
}

.admin-container button:hover,
.admin-container .button-link:hover {
    background-color: var(--primary-hover-color);
    border-color: var(--primary-hover-color);
    color: var(--white);
    text-decoration: none;
}

/* Specifický styl pro červené tlačítko/odkaz Smazat */
.delete-button,
a[style*="color: red"]
{
    background-color: var(--red-warning) !important;
    border-color: var(--red-warning) !important;
}
.delete-button:hover,
a[style*="color: red"]:hover {
    background-color: #c82333 !important;
    border-color: #bd2130 !important;
}

.admin-container td a[style*="color: red"] {
    color: var(--white) !important; 
}

/* === PLOVOUCÍ TLAČÍTKA === */

.floating-buttons {
    position: fixed;
    bottom: 25px;
    right: 25px;
    display: flex;
    flex-direction: column-reverse;
    gap: 15px;
    z-index: 1000;
}

.floating-buttons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background-color: var(--medium-dark);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 50%; /* Kulatý tvar */
    text-decoration: none;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
    transition: background-color 0.2s, transform 0.2s;
}

.floating-buttons a:hover {
    background-color: var(--primary-color);
    transform: scale(1.1);
}

/* Styly pro tlačítko "Nahoru" */
.scroll-top-btn {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
}

/* Definice samotné animace (Keyframes) */
@keyframes zoomIn {
    from {
        transform: scale(10);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}
@keyframes slideInFromUp {
    from {
        transform: translateY(-500px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}
@keyframes slideInFromDown {
    from {
        transform: translateY(500px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes zoomIn1 {
    from {
        transform: scale(2);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}
@keyframes slideInFromUp1 {
    from {
        transform: translateY(-100px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}
@keyframes slideInFromDown1 {
    from {
        transform: translateY(100px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* === MEDIA QUERIES PRO RESPONZIVITU === */
@media (max-width: 768px) {
    .galleries-container {
        grid-template-columns: 1fr;
    }
    .photo-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
    .admin-container .header, .header-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}
@media (max-width: 1200px) {
    .photo-grid {
        column-count: 3;
    }
}

@media (max-width: 768px) {
    .photo-grid {
        column-count: 2;
    }
}

.floating-buttons {
    
    bottom: 60px;
	right: 35px;
}
@media (max-width: 768px) {
 
    .header-container {
        flex-direction: column;
        gap: 15px;
    }

    .header-text h1 {
        font-size: 3em;
    }

    .header-text h2 {
        font-size: 2.5em;
    }

    .header-text p {
        font-size: 1.5em;
    }
}