:root {
    --bg: #f5f7fb;
    --surface: #ffffff;
    --text: #0f172a;
    --muted: #64748b;
    --primary: #105020;
    --accent: #d01000;
    --gold: #d09828;
    --border: #e2e8f0;
    --radius: 16px;
    --shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: "Segoe UI", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}
.icon { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 2; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

.layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}
.sidebar {
    background: var(--surface);
    border-right: 1px solid var(--border);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    color: var(--primary);
}
.brand small {
    display: block;
    font-weight: 600;
    color: var(--muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 10px;
    color: var(--muted);
    font-weight: 600;
}
.nav a.active,
.nav a:hover {
    background: #e9f4ec;
    color: var(--primary);
}
.nav a.home-link {
    background: #f8fafc;
    color: var(--text);
    border: 1px solid var(--border);
}
.nav a.home-link:hover {
    background: #eef4f0;
    color: var(--primary);
}
.nav a.danger { color: var(--accent); }

.main {
    padding: 32px;
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
}
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}
.topbar h1 { font-size: 1.8rem; }
.topbar p { color: var(--muted); font-size: 0.95rem; }

.grid {
    display: grid;
    gap: 16px;
}
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}
.card h3 { margin-bottom: 8px; color: var(--primary); font-size: 1.1rem; }
.card p { color: var(--muted); font-size: 0.95rem; }

.section {
    margin-top: 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}
.section h2 {
    font-size: 1.2rem;
    color: var(--primary);
    margin-bottom: 12px;
}

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; }
th { color: var(--muted); text-transform: uppercase; font-size: 0.75rem; letter-spacing: 0.5px; }
td { vertical-align: top; }

.form-grid {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
label { font-weight: 600; color: var(--muted); font-size: 0.86rem; }
input, select, textarea {
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font: inherit;
}
textarea { min-height: 80px; resize: vertical; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: #fff;
    font-weight: 700;
    cursor: pointer;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.btn-danger {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.badge {
    padding: 4px 8px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    background: #eef2ff;
    color: #4338ca;
}
.badge.success { background: #dcfce7; color: #166534; }
.badge.warn { background: #fef3c7; color: #b45309; }
.badge.error { background: #fee2e2; color: #b91c1c; }

.alert {
    padding: 12px 16px;
    border-radius: 10px;
    margin-bottom: 16px;
    border: 1px solid var(--border);
    background: #f8fafc;
    color: var(--muted);
}
.alert.success { background: #ecfdf5; border-color: #a7f3d0; color: #065f46; }
.alert.error { background: #fef2f2; border-color: #fecaca; color: #991b1b; }

.menu-toggle {
    display: none;
    border: 0;
    background: transparent;
    font-size: 1.5rem;
    cursor: pointer;
}

@media (max-width: 1024px) {
    .layout { grid-template-columns: 1fr; }
    .sidebar { position: fixed; top: 0; left: -100%; height: 100%; width: 260px; transition: 0.3s ease; z-index: 999; }
    .sidebar.open { left: 0; box-shadow: 20px 0 50px rgba(0,0,0,0.2); }
    .main { padding: 24px; }
    .menu-toggle { display: inline-flex; }
}

@media (max-width: 640px) {
    .topbar { flex-direction: column; align-items: flex-start; gap: 8px; }
    .btn { width: 100%; justify-content: center; }
    th, td { padding: 10px 8px; font-size: 0.85rem; }
}

/* Responsive refinement pass */
@media (max-width: 1024px) {
    .sidebar {
        top: 0;
        left: -110%;
        width: min(84vw, 320px);
        max-width: calc(100vw - 32px);
        padding: 20px 16px;
        overflow-y: auto;
        box-shadow: none;
    }

    .sidebar.open {
        left: 0;
        box-shadow: 0 0 0 100vmax rgba(15, 23, 42, 0.35), 0 24px 48px rgba(15, 23, 42, 0.24);
    }

    .main {
        padding: 20px 16px 28px;
    }

    .topbar {
        align-items: flex-start;
        gap: 12px;
    }
}

@media (max-width: 640px) {
    .sidebar {
        width: min(88vw, 300px);
    }

    .topbar h1 {
        font-size: 1.4rem;
    }

    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }

    .card,
    .section {
        padding: 16px;
    }

    .table-wrap {
        margin-inline: -4px;
    }
}