/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header and Navigation */
header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-size: 1.25rem;
    font-weight: 600;
    color: #2c3e50;
    text-decoration: none;
    transition: color 0.3s ease;
}

.logo a:hover {
    color: #3498db;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: #555;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 0;
}

.nav-menu a:hover {
    color: #3498db;
}

/* Main Content */
main {
    padding: 2rem 0;
}

h1 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 1.5rem;
    text-align: center;
    font-weight: 700;
}

/* Cover Image */
.cover-image {
    margin: 2rem 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.cover-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* Content Section */
.content {
    background-color: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.intro {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: #444;
}

/* Features List */
.features {
    list-style: none;
    margin: 2rem 0;
    padding-left: 0;
}

.features li {
    padding: 1rem 0 1rem 2rem;
    position: relative;
    border-bottom: 1px solid #e9ecef;
    line-height: 1.7;
}

.features li:last-child {
    border-bottom: none;
}

.features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #27ae60;
    font-weight: bold;
    font-size: 1.2rem;
}

/* Czech Text Sections */
.czech-text,
.teachers-text {
    font-size: 1rem;
    line-height: 1.8;
    margin-top: 1.5rem;
    color: #555;
    padding: 1.5rem;
    background-color: #f8f9fa;
    border-left: 4px solid #3498db;
    border-radius: 4px;
}

.teachers-text {
    border-left-color: #27ae60;
}

/* Hiring Notice */
.hiring-notice {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-top: 1.5rem;
    color: #2c3e50;
    padding: 1.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
}

.hiring-notice a {
    color: white;
    text-decoration: none;
    border-bottom: 2px solid rgba(255, 255, 255, 0.7);
    transition: border-color 0.3s ease;
    font-weight: 600;
}

.hiring-notice a:hover {
    border-bottom-color: white;
}

/* Footer */
footer {
    background-color: #2c3e50;
    color: #ecf0f1;
    padding: 2rem 0;
    margin-top: 3rem;
}

footer .container {
    text-align: center;
}

.footer-logo {
    margin-bottom: 1rem;
}

.footer-logo a {
    color: #ecf0f1;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 600;
    transition: color 0.3s ease;
}

.footer-logo a:hover {
    color: #3498db;
}

.footer-text {
    font-size: 0.9rem;
    color: #95a5a6;
}

.footer-text a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-text a:hover {
    color: #5dade2;
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-menu {
        gap: 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    .content {
        padding: 1.5rem;
    }

    .features li {
        padding-left: 1.5rem;
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.75rem;
    }

    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .content {
        padding: 1rem;
    }

    .czech-text,
    .teachers-text {
        padding: 1rem;
        font-size: 0.95rem;
    }
}

/* Contact Page Styles */
.contact-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact-section {
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #e9ecef;
}

.contact-section:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.contact-section h2 {
    color: #2c3e50;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.contact-section h3 {
    color: #34495e;
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.address {
    background-color: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #3498db;
}

.address p {
    margin: 0.5rem 0;
    color: #555;
    line-height: 1.6;
}

.map-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.map-link {
    display: inline-block;
    padding: 1rem 1.5rem;
    background-color: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    transition: background-color 0.3s ease, transform 0.2s ease;
    font-weight: 500;
}

.map-link:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}

.phone-numbers {
    background-color: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #27ae60;
}

.phone-numbers p {
    margin: 0.75rem 0;
    font-size: 1.1rem;
}

.phone-numbers a {
    color: #27ae60;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.phone-numbers a:hover {
    color: #229954;
    text-decoration: underline;
}

.director {
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem;
    border-radius: 8px;
}

.director h3 {
    color: white;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.director .title {
    font-size: 1.1rem;
    font-style: italic;
    opacity: 0.9;
}

.director .email {
    margin-top: 1rem;
    font-size: 1.1rem;
}

.director .email a {
    color: white;
    text-decoration: none;
    border-bottom: 2px solid rgba(255, 255, 255, 0.5);
    transition: border-color 0.3s ease;
}

.director .email a:hover {
    border-bottom-color: white;
}

@media (max-width: 768px) {
    .map-links {
        gap: 0.75rem;
    }

    .map-link {
        padding: 0.875rem 1.25rem;
        font-size: 0.95rem;
    }

    .contact-section h2 {
        font-size: 1.5rem;
    }

    .contact-section h3 {
        font-size: 1.2rem;
    }
}

/* Gallery Page Styles */
.gallery-content {
    max-width: 1000px;
    margin: 0 auto;
}

.gallery-intro {
    text-align: center;
    margin-bottom: 3rem;
}

.gallery-description,
.gallery-description-vi {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #555;
    margin: 1rem 0;
}

/* Album Sections */
#albums-container {
    margin: 3rem 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.album-section {
    display: flex;
}

.album-card-large {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    padding: 3rem 2rem;
    text-align: center;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 350px;
    width: 100%;
}

.album-card-large:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
}

.album-icon-large {
    font-size: 5rem;
    margin-bottom: 1.5rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.album-title-large {
    color: white;
    font-size: 2rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.album-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    font-style: italic;
}

.album-view-button {
    display: inline-block;
    padding: 1.25rem 2.5rem;
    background: white;
    color: #667eea;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.album-view-button:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    background: #f8f9fa;
}

@media (max-width: 768px) {
    #albums-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .album-card-large {
        padding: 2.5rem 1.5rem;
        min-height: 300px;
    }

    .album-icon-large {
        font-size: 4rem;
    }

    .album-title-large {
        font-size: 1.6rem;
    }

    .album-subtitle {
        font-size: 1rem;
    }

    .album-view-button {
        padding: 1rem 2rem;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .album-card-large {
        padding: 2rem 1.25rem;
        min-height: 280px;
    }

    .album-icon-large {
        font-size: 3.5rem;
    }

    .album-title-large {
        font-size: 1.4rem;
    }

    .album-subtitle {
        font-size: 0.95rem;
        margin-bottom: 1.5rem;
    }

    .album-view-button {
        padding: 0.875rem 1.75rem;
        font-size: 0.95rem;
    }
}