/* Paleta Dark Mode Premium (Sem tom roxo/azul cansativo) */
:root[data-theme="dark"] {
    --bg-main: #0d1117;       /* Fundo principal escuro neutro */
    --bg-surface: #161b22;    /* Cards e Sidebar */
    --bg-card: #21262d;       /* Itens internos e caixas de busca */
    --bg-hover: #30363d;      /* Hover nos botões/menu */
    --text-main: #f0f6fc;     /* Texto principal de alto contraste */
    --text-muted: #8b949e;    /* Subtítulos e textos secundários */
    --border: #30363d;        /* Bordas finas sutis */
    --accent: #2f81f7;        /* Azul vibrante moderno (estilo Vercel/GitHub) */
    --accent-hover: #58a6ff;
    --success: #238636;       /* Verde suave */
    --danger: #da3633;        /* Vermelho elegante */
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

/* Paleta Light Mode Clean */
:root[data-theme="light"] {
    --bg-main: #f6f8fa;
    --bg-surface: #ffffff;
    --bg-card: #f3f4f6;
    --bg-hover: #e5e7eb;
    --text-main: #1f2328;
    --text-muted: #656d76;
    --border: #d0d7de;
    --accent: #0969da;
    --accent-hover: #0353b4;
    --success: #1a7f37;
    --danger: #cf222e;
    --shadow: 0 8px 24px rgba(140, 149, 159, 0.15);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
aside {
    width: 250px;
    background-color: var(--bg-surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

aside.collapsed {
    width: 70px;
}

aside.collapsed .brand-name,
aside.collapsed .sidebar-menu span {
    display: none;
}

.sidebar-header {
    padding: 20px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-main);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 1.4rem;
    color: var(--accent);
}

.sidebar-menu {
    list-style: none;
    padding: 12px;
}

.sidebar-menu li {
    margin-bottom: 4px;
}

.sidebar-menu li a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
}

.sidebar-menu li.active a {
    background-color: var(--bg-card);
    color: var(--text-main);
    border-left: 3px solid var(--accent);
}

.sidebar-menu li a:hover {
    background-color: var(--bg-hover);
    color: var(--text-main);
}

/* Main Layout */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

header {
    background-color: var(--bg-surface);
    padding: 12px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn-icon {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-main);
    width: 36px;
    height: 36px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.btn-primary {
    background-color: var(--accent);
    color: #ffffff;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
}

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

.btn-danger {
    background-color: var(--danger);
    color: #ffffff;
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
}

.user-badge {
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: var(--bg-card);
    padding: 4px 10px;
    border-radius: 6px;
    border: 1px solid var(--border);
    font-size: 0.85rem;
}

/* Content Area */
.content-body {
    padding: 24px;
    overflow-y: auto;
    flex-grow: 1;
}

.breadcrumb {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.card-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.card h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
}

.subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.package-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
}

.detail-item {
    background-color: var(--bg-card);
    padding: 12px;
    border-radius: 6px;
    border: 1px solid var(--border);
}

.detail-item label {
    display: block;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 4px;
    text-transform: uppercase;
}

.detail-item value {
    font-size: 0.95rem;
    font-weight: 600;
}

.status-off { color: var(--danger); }

/* Search and Tabs */
.channel-header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    gap: 16px;
}

.search-box {
    position: relative;
    max-width: 280px;
    width: 100%;
}

.search-box input {
    width: 100%;
    padding: 8px 12px 8px 36px;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-main);
    outline: none;
    font-size: 0.85rem;
}

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

.search-box i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.category-tabs {
    display: flex;
    gap: 6px;
    margin-bottom: 16px;
    overflow-x: auto;
}

.tab-btn {
    background-color: var(--bg-card);
    color: var(--text-muted);
    border: 1px solid var(--border);
    padding: 6px 14px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
}

.tab-btn.active, .tab-btn:hover {
    background-color: var(--accent);
    color: #ffffff;
    border-color: var(--accent);
}

/* Channels Grid */
.channels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
    gap: 10px;
    max-height: 450px;
    overflow-y: auto;
}

.channel-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.channel-card i {
    color: var(--success);
}

/* Modal de Login */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay.active {
    display: flex;
}

.modal-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 28px;
    width: 100%;
    max-width: 380px;
    position: relative;
    box-shadow: var(--shadow);
}

.modal-close {
    position: absolute;
    top: 14px; right: 18px;
    background: transparent;
    border: none;
    font-size: 1.4rem;
    color: var(--text-muted);
    cursor: pointer;
}

.modal-header {
    text-align: center;
    margin-bottom: 20px;
}

.modal-logo {
    font-size: 2.2rem;
    color: var(--accent);
    margin-bottom: 8px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.input-icon {
    position: relative;
}

.input-icon i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.input-icon input {
    width: 100%;
    padding: 9px 12px 9px 36px;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-main);
    outline: none;
}

.btn-block {
    width: 100%;
    padding: 10px;
    margin-top: 8px;
}