:root {
    --primary-color: #4CAF50;
    --secondary-color: #FFD700;
    --bg-color: #FFF9E3;
    --text-color: #2D3436;
    --white: #FFFFFF;
    --transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
}

[data-theme="winter"] {
    --primary-color: #01579B;
    --secondary-color: #E0F7FA;
    --bg-color: #F5F5F5;
    --text-color: #2C3E50;
    --glass-bg: rgba(224, 247, 250, 0.6);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: var(--transition);
    overflow-x: hidden;
}

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

/* Header & Nav */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 15px 0;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    transition: var(--transition);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -1px;
}

.logo span {
    color: var(--primary-color);
}

.theme-switcher {
    display: flex;
    background: rgba(0, 0, 0, 0.05);
    padding: 4px;
    border-radius: 30px;
    gap: 4px;
}

.theme-switcher button {
    padding: 8px 16px;
    border-radius: 25px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    transition: var(--transition);
    background: transparent;
    color: var(--text-color);
}

.theme-switcher button.active {
    background: var(--white);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    color: var(--primary-color);
}

/* Hero */
.hero {
    margin-top: 80px;
    position: relative;
    height: 70vh;
    min-height: 400px;
    overflow: hidden;
}

.hero-image-container {
    width: 100%;
    height: 100%;
    position: relative;
}

.hero-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.hero-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 60px 20px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    color: white;
    text-align: center;
}

.hero-overlay h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 10px;
    animation: fadeInUp 0.8s ease;
}

.hero-overlay p {
    font-size: 1.2rem;
    font-weight: 300;
    letter-spacing: 2px;
    animation: fadeInUp 1s ease;
}

/* Sections */
.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 40px;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

/* Video Section */
.video-section {
    padding: 80px 0;
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    /* 16:9 */
    height: 0;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    background: #000;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-note {
    text-align: center;
    margin-top: 20px;
    font-style: italic;
    opacity: 0.7;
}

/* Gallery Section */
.gallery-section {
    padding: 80px 0;
}

.gallery-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.photo-tile {
    position: relative;
    aspect-ratio: 4/5;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.photo-tile:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 15px 30px rgba(var(--primary-color), 0.2);
}

.photo-tile img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.photo-tile.placeholder {
    background: rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    color: #666;
    border: 2px dashed rgba(0, 0, 0, 0.1);
}

.gallery-loading,
.gallery-empty,
.gallery-loading-small {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 20px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    font-style: italic;
    opacity: 0.7;
}

.gallery-loading-small {
    padding: 20px;
    font-size: 0.8rem;
}

.gallery-note {
    text-align: center;
    margin-top: 30px;
    font-size: 0.9rem;
    opacity: 0.6;
}

/* Buttons */
.btn-secondary {
    display: inline-block;
    padding: 10px 20px;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-secondary:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    z-index: 2000;
    padding-top: 50px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
}

.lightbox-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 85vh;
    border-radius: 10px;
    animation: zoom 0.5s;
    transition: opacity 0.3s ease;
}

.fade-in {
    animation: fadeInImg 0.5s forwards;
}

@keyframes fadeInImg {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.close {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 2005;
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 16px 20px;
    border: none;
    cursor: pointer;
    font-size: 24px;
    border-radius: 50%;
    transition: var(--transition);
    user-select: none;
    z-index: 2005;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background: rgba(255, 255, 255, 0.4);
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

@media (max-width: 768px) {

    .lightbox-prev,
    .lightbox-next {
        padding: 10px 14px;
        font-size: 18px;
    }
}

footer {
    padding: 40px 0;
    text-align: center;
    background: rgba(0, 0, 0, 0.02);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

footer p {
    font-weight: 500;
    opacity: 0.8;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes zoom {
    from {
        transform: scale(0.8)
    }

    to {
        transform: scale(1)
    }
}

/* Responsive */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 15px;
    }

    .hero-overlay h1 {
        font-size: 2.2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }
}