@media (max-width: 768px) {
    .sidebar {
        position: relative;
        width: 100%;
    }
    .main-content {
        margin-left: 0;
    }
}

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

/* Root theme */
:root {
    --shrdzm-green: #0F8F5A;
    --shrdzm-green-dark: #0B6B43;
    --bg-light: #F5F6F8;
    --text-dark: #1A1A1A;
    --white: #FFFFFF;
    --card-shadow: 0 2px 10px rgba(0,0,0,0.05);
    --transition: 0.2s ease-in-out;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg-light);
    color: var(--text-dark);
}

/* Layout */
.sidebar {
    width: 260px;
    background: var(--white);
    position: fixed;
    height: 100vh;
    border-right: 1px solid rgba(0,0,0,0.1);
    padding: 1.5rem;
}

.sidebar img {
    height: 40px;
    margin-bottom: 2rem;
}

.sidebar nav a {
    display: block;
    padding: 0.8rem 0;
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}
.sidebar nav a:hover {
    color: var(--shrdzm-green);
}

.main-content {
    margin-left: 260px;
    padding: 2rem;
}

header.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(0,0,0,0.1);
    margin-bottom: 1.5rem;
}

.card {
    background: var(--white);
    border-radius: 8px;
    padding: 1.8rem;
    box-shadow: var(--card-shadow);
    margin-bottom: 1.8rem;
}

h1, h2 {
    color: var(--shrdzm-green-dark);
    margin-bottom: 1rem;
}

.table {
    width: 100%;
    border-collapse: collapse;
}
.table th, .table td {
    padding: 0.8rem;
    border-bottom: 1px solid rgba(0,0,0,0.1);
    text-align: left;
}

button {
    background: var(--shrdzm-green);
    color: var(--white);
    padding: 0.7rem 1.3rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: var(--transition);
}
button:hover {
    background: var(--shrdzm-green-dark);
}