:root {
    --bg-color: #f4f6f9;
    --card-bg: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --accent-color: #e74c3c; /* Vermelho YouTube */
    --accent-hover: #c0392b;
    --star-color: #f1c40f;
    --border-radius: 8px;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
}

header {
    background: linear-gradient(135deg, #003366 0%, #1e3a8a 100%);
    color: #fff;
    padding: 1.5rem;
    box-shadow: 0 8px 24px rgba(0, 51, 102, 0.25);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.header-back {
    flex-basis: 100%;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #c7d7ee;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}
.header-back:hover { color: #fff; }

.btn-channel {
    background-color: var(--accent-color);
    color: white;
    text-decoration: none;
    padding: 0.6rem 1.2rem;
    border-radius: var(--border-radius);
    font-weight: bold;
    transition: background 0.2s;
}

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

.main-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

/* Toolbar de Filtros e Busca */
.toolbar {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.search-box {
    flex: 1;
    min-width: 280px;
    position: relative;
}

.search-box i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.search-box input {
    width: 100%;
    padding: 0.8rem 0.8rem 0.8rem 2.8rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
}

.filters-box {
    display: flex;
    gap: 1rem;
}

.filters-box select {
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    background: white;
    font-size: 1rem;
    cursor: pointer;
}

/* Grid de Cards */
.catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

/* Card Individual */
.card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    border: 2px solid transparent;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
}

/* Controles superiores do card */
.card-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.category-badge {
    background-color: #e8f0fe;
    color: #1a73e8;
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.action-icons i {
    cursor: pointer;
    margin-left: 10px;
    font-size: 1.1rem;
    transition: color 0.2s;
}

.fa-star { color: #ccc; }
.fa-star.active { color: var(--star-color); }
.fa-grip-lines { color: var(--text-secondary); cursor: grab; }
.fa-grip-lines:active { cursor: grabbing; }

.card-title {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.card-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.btn-watch {
    display: block;
    text-align: center;
    background-color: #f8f9fa;
    color: var(--text-primary);
    border: 1px solid #ddd;
    padding: 0.6rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: background 0.2s;
}

.btn-watch:hover {
    background-color: #e9ecef;
    color: var(--accent-color);
}

/* Drag and Drop Visual Class */
.card.dragging {
    opacity: 0.5;
    border: 2px dashed var(--accent-color);
}