:root {
    --fundo-primario: #f4f4f9;
    --fundo-secundario: #ffffff;
    --texto-primario: #1e1e1e;
    --cor-acento: #3498db; 
    --cor-codigo: #e8e8e8;
    --sombra-card: 0 4px 6px rgba(0, 0, 0, 0.1);
}

body.dark-mode {
    --fundo-primario: #1f1f1f;
    --fundo-secundario: #2c2c2c;
    --texto-primario: #f0f0f0;
    --cor-acento: #4bd5ee;
    --cor-codigo: #121212;
    --sombra-card: 0 4px 8px rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--fundo-primario);
    color: var(--texto-primario);
    transition: background-color 0.5s, color 0.5s;
    line-height: 1.6;
    min-height: 100vh;
}

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

.header {
    background-color: var(--fundo-secundario);
    box-shadow: var(--sombra-card);
    padding: 20px 0;
    margin-bottom: 30px;
}

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

.header h1 {
    color: var(--cor-acento);
    font-size: 1.8em;
}

.theme-toggle {
    background: var(--cor-acento);
    border: none;
    color: var(--fundo-secundario);
    padding: 10px 15px;
    cursor: pointer;
    border-radius: 5px;
    font-size: 1.2em;
    transition: background-color 0.3s, filter 0.3s;
}

.theme-toggle:hover {
    filter: brightness(1.2);
}

.search-section {
    padding: 20px 0;
}

.search-input {
    width: 100%;
    padding: 15px 20px;
    font-size: 1.1em;
    border: 2px solid var(--fundo-secundario);
    border-radius: 8px;
    background-color: var(--fundo-secundario);
    color: var(--texto-primario);
    transition: border-color 0.3s, box-shadow 0.3s;
    box-shadow: var(--sombra-card); 
}

.search-input:focus {
    outline: none;
    border-color: var(--cor-acento);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.3);
}

.dark-mode .search-input {
    border: 2px solid #444;
}

.tags-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    padding-bottom: 50px;
}

.tag-card {
    background-color: var(--fundo-secundario);
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--sombra-card);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
}

.tag-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
}

.tag-name {
    font-size: 1.5em;
    color: var(--cor-acento);
    margin-bottom: 10px;
}

.tag-name code {
    background-color: var(--cor-codigo);
    padding: 4px 8px;
    border-radius: 4px;
    font-weight: bold;
    font-family: monospace;
}

.tag-description {
    font-size: 0.95em;
    flex-grow: 1; 
}

.tag-tipo {
    margin-top: 15px;
    font-size: 0.85em;
    color: var(--texto-primario);
    opacity: 0.7;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    padding-top: 10px;
}

.dark-mode .tag-tipo {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.dark-mode .tag-name code {
    background-color: #0d0d0d;
}

.footer {
    padding: 20px 0;
    text-align: center;
    font-size: 0.8em;
    background-color: var(--fundo-secundario);
    color: var(--texto-primario);
    opacity: 0.7;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}