:root {
    --bg-body: #121212;
    --bg-card: #1e1e1e;
    --bg-nav: #252525;
    --text-main: #e0e0e0;
    --text-muted: #a0a0a0;
    --accent: #64b5f6;
    --accent-hover: #42a5f5;
    --btn-dl: #388e3c;
    --btn-dl-hover: #2e7d32;
    --border: #333;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Navigation */
nav {
    background-color: var(--bg-nav);
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav .brand {
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-weight: 800;
    text-decoration: none;
    color: var(--text-main);
    line-height: 1.05;
}

.brand .brand-name{
    font-size: 1.25rem;
    letter-spacing: 0.5px;
}

.brand .brand-tagline{
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
}

nav .brand span {
    color: var(--accent);
}

nav .nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 20px;
    transition: color 0.2s;
}

nav .nav-links a:hover {
    color: var(--text-main);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
    flex: 1;
}

/* Header Sections */
.page-header {
    text-align: center;
    margin-bottom: 3rem;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.page-header p {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 1.5rem auto;
}

/* Search Input */
.search-container {
    max-width: 500px;
    margin: 0 auto;
}

#search-input {
    width: 100%;
    padding: 12px 20px;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 25px;
    color: var(--text-main);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

#search-input:focus {
    border-color: var(--accent);
}

/* Grid Layouts */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

/* Cards */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    border-color: #444;
}

.card h3 {
    margin-bottom: 0.5rem;
    color: var(--accent);
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

/* Category Cards (Index) */
.cat-card {
    text-decoration: none;
    color: inherit;
    text-align: center;
    padding: 2rem 1.5rem;
}
.cat-card h3 { color: var(--text-main); }
.cat-card:hover h3 { color: var(--accent); }

/* Category Icons */
.cat-card .cat-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem auto;
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
}

.cat-card .cat-icon svg {
    width: 100%;
    height: 100%;
    fill: currentColor;
}

.cat-card:hover .cat-icon {
    color: var(--accent-hover);
    transform: scale(1.1);
    transition: transform 0.2s, color 0.2s;
}

/* Buttons */
.btn-group {
    display: flex;
    gap: 10px;
}

.btn {
    padding: 8px 16px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
    transition: background-color 0.2s;
    display: inline-block;
}

.btn-dl {
    background-color: var(--btn-dl);
    color: white;
    flex: 1;
}

.btn-dl:hover {
    background-color: var(--btn-dl-hover);
}

.btn-sec {
    background-color: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
}

.btn-sec:hover {
    border-color: var(--text-muted);
    color: var(--text-main);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    background-color: var(--bg-nav);
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: auto;
}

/* Utility */
.hidden {
    display: none !important;
}

/* Responsive */
@media (max-width: 600px) {
    .grid {
        grid-template-columns: 1fr;
    }
    nav {
        flex-direction: column;
        gap: 10px;
    }
    .nav-links a {
        margin: 0 10px;
    }
}

.site-tagline{
    margin-top: 0.35rem;
    font-size: 1rem;
    color: var(--text-muted);
}