:root {
    --bg-color: #1e1e1e;
    --bg-gradient: linear-gradient(135deg, #232526 0%, #414345 100%);
    --text-color: #e0e0e0;
    --title-color: #ffffff;
    --input-bg-color: #2a2a2e;
    --border-color: #444;
    --suggestion-hover-color: #3c3c3f;
    --suggestion-url-color: #888;
    --focus-border-color: #4a90e2;
    --shadow-color: rgba(0, 0, 0, 0.2);
}

body.light-mode {
    --bg-color: #f4f4f9;
    --bg-gradient: linear-gradient(135deg, #e9e9e9 0%, #f4f4f9 100%);
    --text-color: #212121;
    --title-color: #000000;
    --input-bg-color: #ffffff;
    --border-color: #d1d1d1;
    --suggestion-hover-color: #e9e9e9;
    --suggestion-url-color: #777;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

body {
    background-image: var(--bg-gradient);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    height: 100vh;
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
}

#theme-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    font-size: 1.5em;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    cursor: pointer;
    transition: transform 0.2s, background-color 0.3s;
    z-index: 100;
}

#theme-toggle:hover {
    transform: scale(1.1);
    background-color: var(--input-bg-color);
}

.container {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100vh; /* Full viewport height */
    box-sizing: border-box;
    padding: 30vh 20px 0; /* Default padding to center content */
    transition: padding-top 0.4s ease-out;
}

body.tiles-visible .container {
    padding-top: 5vh; /* Reduced padding to move content up */
}

.top-content {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.page-title {
    font-size: 3.5em;
    font-weight: 600;
    color: var(--title-color);
    margin-bottom: 40px;
    text-shadow: 0 2px 4px var(--shadow-color);
}

.search-wrapper {
    position: relative;
    margin-bottom: 20px;
}

.search-icon {
    position: absolute;
    top: 50%;
    left: 18px;
    transform: translateY(-50%);
    width: 24px;
    height: 24px;
    fill: var(--text-color);
    opacity: 0.6;
}

#search-box {
    width: 100%;
    padding: 18px 20px 18px 55px;
    font-size: 1.2em;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background-color: var(--input-bg-color);
    color: var(--text-color);
    outline: none;
    box-sizing: border-box;
    box-shadow: 0 4px 12px var(--shadow-color);
    transition: border-color 0.3s, box-shadow 0.3s;
}

#search-box:focus {
    border-color: var(--focus-border-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.3), 0 4px 12px var(--shadow-color);
}

#suggestions-container {
    display: block;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
    position: absolute;
    width: 100%;
    background-color: var(--input-bg-color);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 12px 12px;
    box-sizing: border-box;
    max-height: 300px;
    overflow-y: auto;
    text-align: left;
    z-index: 1000;
    box-shadow: 0 8px 16px var(--shadow-color);
}

#suggestions-container.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.suggestion-item {
    padding: 12px 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    transition: background-color 0.2s;
}

.suggestion-item:hover, .suggestion-item.active {
    background-color: var(--suggestion-hover-color);
}

.suggestion-name {
    font-weight: bold;
}

.suggestion-url {
    color: var(--suggestion-url-color);
}

.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #333;
    color: #fff;
    padding: 15px 25px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
    z-index: 2000;
}

.toast.show {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -20px);
}

.toast.success {
    background-color: #4CAF50;
}

.toast.error {
    background-color: #f44336;
}

.toast.warning {
    background-color: #ff9800;
}

#tiles-container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 15px;
    padding: 20px 0;
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: opacity 0.3s ease, max-height 0.4s ease-out;
    pointer-events: none;
}

body.tiles-visible #tiles-container {
    opacity: 1;
    max-height: 100%; /* Allow it to grow */
    flex-grow: 1; /* Take up remaining space */
    overflow-y: auto;
    pointer-events: auto;
}

.tile {
    background-color: var(--input-bg-color);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px var(--shadow-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 15px 10px;
    text-decoration: none;
    color: var(--text-color);
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    font-size: 1em;
    font-weight: 500;
}

.tile:hover {
    transform: translateY(-5px);
    border-color: var(--focus-border-color);
    box-shadow: 0 6px 16px var(--shadow-color);
}

.tile-name {
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
    font-weight: 600;
}

.tile-context {
    font-size: 0.8em;
    color: var(--suggestion-url-color);
    margin-top: 5px;
}

/* Custom Scrollbar Styling */
#tiles-container::-webkit-scrollbar {
  width: 8px;
}

#tiles-container::-webkit-scrollbar-track {
  background: transparent;
}

#tiles-container::-webkit-scrollbar-thumb {
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  border: 2px solid transparent;
  background-clip: content-box;
}

#tiles-container::-webkit-scrollbar-thumb:hover {
  background-color: rgba(255, 255, 255, 0.4);
}

body.light-mode #tiles-container::-webkit-scrollbar-thumb {
  background-color: rgba(0, 0, 0, 0.2);
}

body.light-.mode #tiles-container::-webkit-scrollbar-thumb:hover {
  background-color: rgba(0, 0, 0, 0.4);
}

/* Mobile Adjustments */
@media (max-width: 768px) {
    .container {
        padding: 20vh 15px 0;
    }

    #theme-toggle {
        top: 15px;
        right: 15px;
        width: 45px;
        height: 45px;
        font-size: 1.3em;
    }

    .page-title {
        font-size: 2.5em;
        margin-bottom: 30px;
    }

    #search-box {
        padding: 15px 18px 15px 50px;
        font-size: 1em;
        border-radius: 10px;
    }

    .search-icon {
        left: 15px;
        width: 22px;
        height: 22px;
    }

    .suggestion-item {
        padding: 10px 15px;
    }

    body.is-mobile .suggestion-url {
        display: none;
    }

    #tiles-container {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 10px;
    }

    .tile {
        font-size: 0.9em;
    }
}