/* assets/css/style.css */
:root {
    --bg-main: #0b1120;
    --bg-card: #1e293b;
    --bg-sidebar: #0f172a;
    --accent-blue: #2563eb;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --danger: #ef4444;
}

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

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

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-sidebar);
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
}

.menu-toggle {
    font-size: 24px;
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
}

.logo {
    font-weight: bold;
    font-size: 18px;
    color: #38bdf8;
}

/* Off-Canvas Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: -280px;
    width: 280px;
    height: 100%;
    background: var(--bg-sidebar);
    transition: 0.3s ease;
    z-index: 1000;
    padding: 20px;
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
}

.sidebar.active {
    left: 0;
}

.sidebar-header {
    margin-bottom: 25px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

.sidebar-menu {
    list-style: none;
}

.sidebar-menu li {
    margin-bottom: 12px;
}

.sidebar-menu a {
    color: var(--text-muted);
    text-decoration: none;
    display: block;
    padding: 10px;
    border-radius: 6px;
}

.sidebar-menu a:hover, .sidebar-menu a.active {
    background: var(--accent-blue);
    color: #fff;
}

.container {
    padding: 20px;
    max-width: 600px;
    margin: 0 auto;
}

.card {
    background: var(--bg-card);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
    border: none;
    cursor: pointer;
}

.btn-primary { background: var(--accent-blue); color: #fff; }
.btn-secondary { background: #475569; color: #fff; }