/*
  --- WEBSITE THEMES ---
  To set a theme for the website, add the corresponding class to the <html> tag
  in both index.html and media.html.

  Example: <html class="theme-christmas">

  Available themes:
  - theme-dark (default, solarized dark)
  - theme-christmas
  - theme-ufo
*/

/* Default Theme (theme-dark) */
:root {
  --bg-color: #073642;
  --text-color: #eee8d5;
  --link-hover-color: #ffffff;
  --border-color: #586e75;
  --lightbox-bg-color: rgba(0, 0, 0, 0.8);
  --snowflake-color: #fff;
  --snowflake-shadow: #000;
}

html.theme-christmas {
  --bg-color: #1a4f1a; /* Forest Green */
  --text-color: #f5f5f5;
  --link-hover-color: #ffd700; /* Gold */
  --border-color: #c41e3a; /* Christmas Red */
  --lightbox-bg-color: rgba(69, 19, 29, 0.8);
  --snowflake-color: #fff;
  --snowflake-shadow: #c41e3a;
}

html.theme-ufo {
  --bg-color: #0c0c14; /* Deep Space */
  --text-color: #00ff00; /* Green Alien Text */
  --link-hover-color: #ff00ff; /* Magenta Warp */
  --border-color: #00ffff; /* Cyan Grid */
  --lightbox-bg-color: rgba(0, 255, 0, 0.8);
}

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

header {
    background-color: var(--bg-color);
    color: var(--text-color);
    padding: 10px;
    text-align: center;
    width: 100%;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

nav ul li {
    margin: 0 10px;
}

nav ul a {
    color: var(--text-color);
    text-decoration: none;
}

nav ul a:hover {
    color: var(--link-hover-color);
    text-decoration: underline;
}

.content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.media-section {
    text-align: center;
    margin: 20px 0;
}

.feature-list {
    margin: 15px 0;
}

a {
    color: var(--text-color);
    text-decoration: none;
}

a:hover {
    color: var(--link-hover-color);
    text-decoration: underline;
}

.gallery img {
    max-width: 200px;
    height: auto;
    margin: 5px;
    cursor: pointer;
    border: 1px solid var(--border-color);
}

#lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--lightbox-bg-color);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}
#lightbox-img {
    max-width: 90%;
    max-height: 90%;
}
#close-lightbox {
    color: var(--text-color);
    position: absolute;
    top: 20px;
    right: 20px;
    cursor: pointer;
    font-size: 24px;
}

#prev, #next {
    color: var(--text-color);
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    font-size: 30px;
}
#prev {
    left: 20px;
}
#next {
    right: 20px;
}

/* --- THEME ANIMATIONS --- */
.star, .snowflake, .ufo {
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    will-change: transform, opacity;
}

/* Christmas/Dark Theme Animations */
.star {
    top: 0; left: 0;
    width: 2px;
    height: 2px;
    background-color: white;
    border-radius: 50%;
    box-shadow: 0 0 6px #fff, 0 0 10px #fff, 0 0 15px #0ff;
    animation: twinkle 2s infinite ease-in-out alternate;
}

@keyframes twinkle {
    from { opacity: 0.1; }
    to { opacity: 0.9; }
}

.snowflake {
    top: -20px; left: 0;
    color: var(--snowflake-color);
    text-shadow: 0 0 5px var(--snowflake-shadow);
    font-size: 20px;
    animation: fall linear infinite;
}

@keyframes fall {
    100% {
        transform: translateY(105vh) rotate(360deg);
        opacity: 0;
    }
}

/* UFO Theme Animations */
.ufo {
    left: 0;
    animation: fly-across linear; /* duration set by JS */
}

.ufo > div { /* The child element for wobbling */
    animation: ufo-wobble 0.7s infinite ease-in-out alternate;
}

.ufo-emoji {
    font-size: 25px;
    text-shadow: 0 0 15px var(--text-color);
}

.ufo-ship {
    width: 0;
    height: 0;
    border-left: 12px solid transparent;
    border-right: 12px solid transparent;
    border-bottom: 30px solid var(--text-color);
    filter: drop-shadow(0 0 8px var(--link-hover-color));
}

@keyframes fly-across {
    from { transform: translateX(-150px); }
    to { transform: translateX(110vw); }
}

@keyframes ufo-wobble {
    from { transform: rotate(-8deg); }
    to { transform: rotate(8deg); }
}
