body {
    margin: 0;
    font-family: "Segoe UI", sans-serif;
    background: #f8f9fa;
}

/* === HEADER === */
.navbar {
    height: 56px;
}

/* === LAYOUT === */
.wrapper {
    display: flex;
    height: calc(100vh - 56px);
    margin-top: 56px;
}

/* === SIDEBAR === */
.sidebar {
    width: 240px;
    background: #f9f9f9;
    border-right: 1px solid #ddd;
    padding: 15px;
    overflow-y: auto;
    flex-shrink: 0;
    position: fixed;
    top: 56px;
    bottom: 0;
    left: 0;
    z-index: 100;
}

.sidebar-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.menu-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    color: #333;
    text-decoration: none;
    background: linear-gradient(180deg, #ffffff 0%, #f3f4f7 100%);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.7), 0 1px 2px rgba(0,0,0,0.05);
    transition: all 0.2s ease;
}

.menu-btn i {
    font-size: 1.1rem;
    color: #0d6efd;
    width: 22px;
    text-align: center;
}

.menu-btn:hover {
    background: linear-gradient(180deg, #e7f0ff 0%, #d0e3ff 100%);
    border-color: #9dc3ff;
    box-shadow: 0 2px 4px rgba(13,110,253,0.2);
    transform: translateY(-1px);
    color: #0d6efd;
}

.menu-btn.active {
    background: linear-gradient(180deg, #0e1f33 0%, #0e1f33 100%);
    color: #fff;
    border-color: #0d6efd;
    box-shadow: 0 2px 6px rgba(13,110,253,0.3);
}

.menu-btn.active i {
    color: #fff;
}

/* === CONTENT === */
.content {
    flex-grow: 1;
    margin-left: 240px;
    padding: 25px;
    overflow-y: auto;
}

/* === STAT KARTLARI === */
.stat-card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    transition: transform .2s;
}
.stat-card:hover {
    transform: scale(1.03);
}

/* === FOOTER === */
footer {
    position: fixed;
    bottom: 0;
    left: 240px;
    width: calc(100% - 240px);
    background: #fff;
    border-top: 1px solid #ddd;
    font-size: 13px;
    text-align: center;
    padding: 8px;
}