@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&display=swap');

:root {
    --text-color: #333;
    --bg-color: #f4f6f8;
    --white: #ffffff;
    --sidebar-width: 280px;
    --shadow: 0 4px 10px rgba(0,0,0,0.08);
}

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

body {
    display: flex;
    min-height: 100vh;
    background: var(--bg-color);
    font-family: 'Roboto', sans-serif;
    color: var(--text-color);
}

.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    padding: 20px;
    color: var(--white);
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0; top: 0; bottom: 0;
}

.content-wrapper {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    width: calc(100% - var(--sidebar-width));
}

.header {
    height: 70px;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.main-content { padding: 30px; }

.logo {
    text-align: center;
    margin-top: 2rem;
}
.logo h1 {
    font-size: 50px;
    font-weight: 800;
    letter-spacing: 2px;
}
.logo h2 {
    font-size: 40px;
    opacity: 0.8;
    font-weight: 400;
}

.menu { 
    list-style: none;
    margin-top: 5rem;
}
.menu-item {
    padding: 12px 15px;
    border-radius: 8px;
    cursor: pointer;
    margin-bottom: 8px;
    transition: 0.3s;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
}
.menu-item:hover, .menu-item.active {
    background: rgba(255,255,255,0.2);
    font-weight: 500;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    margin-top: 20px;
}
th, td { padding: 15px 20px; text-align: left; border-bottom: 1px solid #eee; }
th { background: #f8f9fa; font-weight: 600; color: #555; text-transform: uppercase; font-size: 13px; }
tr:last-child td { border-bottom: none; }
tr:hover { background: #fafafa; }

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    flex-wrap: wrap;
    gap: 15px;
}

input, select {
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    outline: none;
    min-width: 250px;
}

button {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: 0.2s;
    color: white;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
button:hover { opacity: 0.9; transform: translateY(-1px); }

.btn-red { background-color: #e74c3c !important; }
.btn-green { background-color: #2ecc71 !important; }
.btn-gray { background-color: #95a5a6 !important; }