:root {
    --primary: #0b7a3b;
    --primary-dark: #075f2e;
    --secondary: #111827;
    --accent: #25d366;
    --bg: #f4f7fb;
    --card: #ffffff;
    --text: #111827;
    --muted: #6b7280;
    --border: #e5e7eb;
    --danger: #dc2626;
    --warning: #f59e0b;
    --success: #16a34a;
    --shadow: 0 15px 40px rgba(15, 23, 42, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Inter, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

a {
    text-decoration: none;
    color: inherit;
}

.app {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 280px;
    background: linear-gradient(180deg, var(--secondary), #020617);
    color: #fff;
    position: fixed;
    inset: 0 auto 0 0;
    padding: 22px;
    z-index: 50;
    transition: 0.3s ease;
}

.brand {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 30px;
}

.brand-icon {
    width: 48px;
    height: 48px;
    background: var(--accent);
    color: #052e16;
    display: grid;
    place-items: center;
    border-radius: 16px;
    font-size: 22px;
}

.brand h3 {
    margin: 0;
    font-size: 20px;
}

.brand span {
    color: #9ca3af;
    font-size: 13px;
}

.sidebar-menu {
    display: grid;
    gap: 8px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 13px;
    padding: 13px 14px;
    border-radius: 14px;
    color: #d1d5db;
    transition: 0.2s;
}

.sidebar-link:hover,
.sidebar-link.active {
    background: rgba(37, 211, 102, 0.16);
    color: #fff;
}

.sidebar-link i {
    width: 20px;
}

.sidebar-footer {
    position: absolute;
    left: 22px;
    right: 22px;
    bottom: 22px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    padding: 15px;
    border-radius: 18px;
}

.sidebar-footer small {
    color: #9ca3af;
    display: block;
}

.main-content {
    margin-left: 280px;
    width: calc(100% - 280px);
    min-height: 100vh;
}

.topbar {
    height: 86px;
    background: #fff;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 0 26px;
    position: sticky;
    top: 0;
    z-index: 20;
}

.topbar h2 {
    margin: 0;
    font-size: 22px;
}

.topbar p {
    margin: 4px 0 0;
    color: var(--muted);
    font-size: 13px;
}

.menu-btn {
    border: none;
    background: var(--bg);
    width: 42px;
    height: 42px;
    border-radius: 13px;
    cursor: pointer;
    display: none;
}

.topbar-user {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 12px;
}

.topbar-user span {
    display: block;
    color: var(--muted);
    font-size: 12px;
    text-transform: capitalize;
}

.logout-btn {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 13px;
    background: #fee2e2;
    color: var(--danger);
}

.content {
    padding: 26px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-bottom: 22px;
}

.stat-card,
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 22px;
    box-shadow: var(--shadow);
    padding: 22px;
}

.stat-card {
    display: flex;
    justify-content: space-between;
    gap: 16px;
}

.stat-card p {
    color: var(--muted);
    margin: 0 0 8px;
}

.stat-card h3 {
    margin: 0;
    font-size: 28px;
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 16px;
    background: #dcfce7;
    color: var(--primary);
    display: grid;
    place-items: center;
    font-size: 22px;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1.4fr 0.8fr;
    gap: 20px;
}

.table-wrap {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    min-width: 700px;
}

.table th,
.table td {
    padding: 14px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    font-size: 14px;
}

.table th {
    color: var(--muted);
    font-weight: 600;
}

.badge {
    display: inline-flex;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
}

.badge.green {
    background: #dcfce7;
    color: #166534;
}

.badge.yellow {
    background: #fef3c7;
    color: #92400e;
}

.badge.red {
    background: #fee2e2;
    color: #991b1b;
}

.btn {
    border: none;
    background: var(--primary);
    color: #fff;
    padding: 11px 15px;
    border-radius: 13px;
    cursor: pointer;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.form-card {
    max-width: 430px;
    margin: 60px auto;
    background: #fff;
    padding: 28px;
    border-radius: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.form-card h2 {
    margin-top: 0;
}

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

.form-group label {
    display: block;
    margin-bottom: 7px;
    font-weight: 700;
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid var(--border);
    border-radius: 14px;
    outline: none;
}

.alert {
    padding: 12px 14px;
    border-radius: 14px;
    margin-bottom: 15px;
    font-size: 14px;
}

.alert.error {
    background: #fee2e2;
    color: #991b1b;
}

.auth-body {
    min-height: 100vh;
    background: radial-gradient(circle at top left, #dcfce7, transparent 35%), var(--bg);
    padding: 20px;
}

.overlay {
    display: none;
}

@media (max-width: 1100px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 820px) {
    .sidebar {
        transform: translateX(-105%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        width: 100%;
        margin-left: 0;
    }

    .menu-btn {
        display: block;
    }

    .overlay.show {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(15, 23, 42, 0.45);
        z-index: 40;
    }

    .topbar {
        padding: 0 16px;
    }

    .topbar-user div {
        display: none;
    }

    .content {
        padding: 16px;
    }
}

@media (max-width: 560px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .topbar h2 {
        font-size: 18px;
    }

    .stat-card h3 {
        font-size: 24px;
    }
}