:root {
    /* Light theme using color palette */
    --bg-color: #A2D4E6;
    --text-color: #002B44;
    --card-bg: #FFFFFF;
    --border-color: #083C5A;
    --btn-bg: #FFFFFF;
    --btn-hover-bg: #FFA126;
    --accent-color: #FFA126;
    --primary-blue: #083C5A;
    --dark-blue: #002B44;
    --light-blue: #A2D4E6;
    --shadow-color: rgba(0, 43, 68, 0.15);
    --navbar-bg: #083C5A;
}

[data-theme="dark"] {
    /* Dark theme using color palette */
    --bg-color: #002B44;
    --text-color: #A2D4E6;
    --card-bg: #083C5A;
    --border-color: #A2D4E6;
    --btn-bg: #083C5A;
    --btn-hover-bg: #FFA126;
    --accent-color: #FFA126;
    --primary-blue: #A2D4E6;
    --dark-blue: #083C5A;
    --light-blue: #FFFFFF;
    --shadow-color: rgba(162, 212, 230, 0.2);
    --navbar-bg: #083C5A;
}

body {
    font-family: 'Arial', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
    position: relative;
}

/* Particles background */
#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background-color: var(--bg-color);
    transition: background-color 0.3s ease;
}

/* Ensure content appears above particles */
.navbar,
section,
.container,
footer {
    position: relative;
    z-index: 1;
}

.contact-page {
    display: none
}

#btn-primary {
    padding: 12px 24px;
    font-size: 16px;
    border: none;
    border-radius: 30px;
    background-color: var(--btn-bg);
    color: var(--text-color);
    transition: transform 0.2s ease, background-color 0.3s, color 0.3s;
    cursor: pointer;
}

#btn-primary:hover {
    transform: scale(1.05);
    background-color: var(--btn-hover-bg);
    color: var(--card-bg);
    box-shadow: 0 4px 12px var(--shadow-color);
}

#language-toggle {
    transition: transform 0.2s;
}

#language-toggle:hover {
    transform: scale(1.08);
}

#music-toggle {
    transition: transform 0.2s;
}

#music-toggle:hover {
    transform: scale(1.08);
}

#language-toggle,
#music-toggle {
    font-family: 'Arial', sans-serif;
    font-size: 16px;
    font-weight: 500;
}

/* 可依照需求進一步美化卡片 */
.portfolio-card {
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.portfolio-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.portfolio-card .card-img-top {
    object-fit: cover;
    height: 200px;
    /* 可依圖片比例調整 */
}

.portfolio-card .btn {
    margin-top: 10px;
    border-radius: 20px;
}

/* Dark mode specific styles */
.navbar-dark {
    background-color: var(--navbar-bg) !important;
    transition: background-color 0.3s ease;
}

.card {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.list-group-item {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.portfolio-card {
    background-color: var(--card-bg);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.portfolio-card:hover {
    box-shadow: 0 8px 20px var(--shadow-color);
}

#dark-mode-toggle {
    transition: transform 0.2s;
}

#dark-mode-toggle:hover {
    transform: scale(1.08);
}

#language-toggle,
#music-toggle,
#dark-mode-toggle {
    font-family: 'Arial', sans-serif;
    font-size: 16px;
    font-weight: 500;
}

/* Footer dark mode */
.bg-dark {
    background-color: var(--navbar-bg) !important;
    transition: background-color 0.3s ease;
}

/* Make navbar and footer semi-transparent for better particles visibility */
.navbar-dark {
    background-color: rgba(8, 60, 90, 0.95) !important;
}

[data-theme="dark"] .navbar-dark {
    background-color: rgba(8, 60, 90, 0.95) !important;
}

footer.bg-dark {
    background-color: rgba(8, 60, 90, 0.95) !important;
}

[data-theme="dark"] footer.bg-dark {
    background-color: rgba(8, 60, 90, 0.95) !important;
}

/* Add subtle backdrop for better content readability */
section {
    backdrop-filter: blur(0.5px);
}

/* Additional card styling for better integration with color palette */
.card {
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.list-group-item {
    border-left: 3px solid var(--accent-color);
}

.list-group-item:first-child {
    border-top-left-radius: 0;
}

.list-group-item:last-child {
    border-bottom-left-radius: 0;
}

/* Navigation hover effects */
.navbar-nav .nav-link {
    position: relative;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: var(--accent-color) !important;
    transform: translateY(-2px);
    transition: all 0.3s ease;
}


/* Wave Background Animation */
@keyframes gradientWave {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* Floating geometric shapes animation */
@keyframes float {
    0% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.7;
    }

    25% {
        transform: translateY(-20px) rotate(90deg);
        opacity: 1;
    }

    50% {
        transform: translateY(-40px) rotate(180deg);
        opacity: 0.7;
    }

    75% {
        transform: translateY(-20px) rotate(270deg);
        opacity: 1;
    }

    100% {
        transform: translateY(0px) rotate(360deg);
        opacity: 0.7;
    }
}

/* Alternative background options */
.geometric-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.geometric-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background:
        radial-gradient(circle at 20% 20%, var(--accent-color) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, var(--primary-blue) 0%, transparent 50%),
        radial-gradient(circle at 40% 70%, var(--light-blue) 0%, transparent 50%);
    animation: float 15s ease-in-out infinite;
    opacity: 0.1;
}

/* Floating shapes animations */
@keyframes floatShape {
    0% {
        transform: translateY(0px) translateX(0px) scale(1);
        opacity: 0.3;
    }

    25% {
        transform: translateY(-30px) translateX(20px) scale(1.1);
        opacity: 0.6;
    }

    50% {
        transform: translateY(-50px) translateX(0px) scale(0.9);
        opacity: 0.8;
    }

    75% {
        transform: translateY(-30px) translateX(-20px) scale(1.1);
        opacity: 0.6;
    }

    100% {
        transform: translateY(0px) translateX(0px) scale(1);
        opacity: 0.3;
    }
}

@keyframes rotateFloat {
    0% {
        transform: rotate(0deg) translateY(0px);
        opacity: 0.4;
    }

    25% {
        transform: rotate(90deg) translateY(-20px);
        opacity: 0.7;
    }

    50% {
        transform: rotate(180deg) translateY(-40px);
        opacity: 0.5;
    }

    75% {
        transform: rotate(270deg) translateY(-20px);
        opacity: 0.7;
    }

    100% {
        transform: rotate(360deg) translateY(0px);
        opacity: 0.4;
    }
}

/* Square rotation animation */
@keyframes rotateSquare {
    0% {
        transform: rotate(0deg) translateY(0px) translateX(0px) scale(1);
        opacity: 0.35;
    }

    25% {
        transform: rotate(90deg) translateY(-25px) translateX(15px) scale(1.1);
        opacity: 0.6;
    }

    50% {
        transform: rotate(180deg) translateY(-35px) translateX(0px) scale(0.9);
        opacity: 0.8;
    }

    75% {
        transform: rotate(270deg) translateY(-25px) translateX(-15px) scale(1.1);
        opacity: 0.6;
    }

    100% {
        transform: rotate(360deg) translateY(0px) translateX(0px) scale(1);
        opacity: 0.35;
    }
}

/* Diamond floating animation */
@keyframes floatDiamond {
    0% {
        transform: rotate(45deg) translateY(0px) scale(1);
        opacity: 0.4;
    }

    20% {
        transform: rotate(65deg) translateY(-15px) scale(1.05);
        opacity: 0.6;
    }

    40% {
        transform: rotate(25deg) translateY(-30px) scale(0.95);
        opacity: 0.8;
    }

    60% {
        transform: rotate(65deg) translateY(-45px) scale(1.1);
        opacity: 0.7;
    }

    80% {
        transform: rotate(25deg) translateY(-20px) scale(1.05);
        opacity: 0.6;
    }

    100% {
        transform: rotate(45deg) translateY(0px) scale(1);
        opacity: 0.4;
    }
}

/* Hexagon floating animation */
@keyframes floatHexagon {
    0% {
        transform: rotate(0deg) translateY(0px) translateX(0px) scale(1);
        opacity: 0.3;
    }

    16.66% {
        transform: rotate(60deg) translateY(-10px) translateX(5px) scale(1.05);
        opacity: 0.5;
    }

    33.33% {
        transform: rotate(120deg) translateY(-20px) translateX(-5px) scale(0.95);
        opacity: 0.7;
    }

    50% {
        transform: rotate(180deg) translateY(-30px) translateX(0px) scale(1.1);
        opacity: 0.6;
    }

    66.66% {
        transform: rotate(240deg) translateY(-20px) translateX(5px) scale(0.95);
        opacity: 0.7;
    }

    83.33% {
        transform: rotate(300deg) translateY(-10px) translateX(-5px) scale(1.05);
        opacity: 0.5;
    }

    100% {
        transform: rotate(360deg) translateY(0px) translateX(0px) scale(1);
        opacity: 0.3;
    }
}

/* School Gallery Styles */
.school-gallery {
    background-color: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 4px 12px var(--shadow-color);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100%;
}

.school-gallery:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px var(--shadow-color);
}

.school-photo-container {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    margin-bottom: 8px;
    transition: transform 0.3s ease;
}

.school-photo-container:hover {
    transform: scale(1.05);
}

.school-photo {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    transition: opacity 0.3s ease;
}

.school-photo:hover {
    opacity: 0.8;
}

.photo-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    color: white;
    padding: 8px 4px 4px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    border-radius: 0 0 8px 8px;
}

.school-photo-container:hover .photo-overlay {
    transform: translateY(0);
}

.photo-overlay small {
    font-size: 11px;
    font-weight: 500;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .school-gallery {
        margin-top: 20px;
    }

    .school-photo {
        height: 150px;
    }

    .photo-overlay small {
        font-size: 10px;
    }

    /* Mobile button positioning */
    #language-toggle,
    #music-toggle,
    #dark-mode-toggle {
        font-size: 14px !important;
        padding: 8px 12px !important;
        min-width: 60px;
        min-height: 40px;
    }
    
    #language-toggle {
        top: 60px !important;
        right: 10px !important;
    }
    
    #music-toggle {
        top: 110px !important;
        right: 10px !important;
    }
    
    #dark-mode-toggle {
        top: 160px !important;
        right: 10px !important;
    }

    /* Center navigation items in mobile collapsed menu */
    .navbar-collapse .navbar-nav {
        text-align: center;
    }
    
    .navbar-collapse .nav-item {
        display: block;
        width: 100%;
    }
    
    .navbar-collapse .nav-link {
        text-align: center;
        justify-content: center;
        display: flex;
        padding: 12px 0;
    }
}

/* Navbar Icon Styles */
.navbar-icon {
    height: 32px;
    width: 32px;
    border-radius: 50%;
    object-fit: cover;
}