:root {
    --primary: #2962ff;
    --success: #00c853;
    --warning: #ffab00;
    --danger: #d50000;
    --dark: #1a237e;
    --light: #f5f5f5;
}

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    min-height: 100vh;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background: var(--primary);
    color: white;
}

.stats-grid {
    background-color: gray;
}

.stat-card {
    padding: 1.5rem;
    border-radius: 12px;
    color: black;
    transition: transform 0.3s ease;
    text-align: center;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.amount {
    font-size: 2rem;
    font-weight: bold;
    margin-top: 0.5rem;
}

.action-panel {
    display: flex;
    gap: 1rem;
    padding: 0 2rem 2rem;
    justify-content: center;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
}

.primary { background: var(--primary); color: white; }
.success { background: var(--success); color: white; }
.warning { background: var(--warning); color: black; }
.danger { background: var(--danger); color: white; }

.btn:hover {
    filter: brightness(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.main-nav {
    display: flex;
    justify-content: space-around;
    padding: 1.5rem;
    background: var(--light);
    border-top: 2px solid rgba(0, 0, 0, 0.1);
}

.nav-btn {
    background: none;
    color: var(--dark);
    padding: 12px;
    border-radius: 8px;
}

.nav-btn:hover {
    background: rgba(0, 0, 0, 0.05);
}

.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    padding: 0;
    justify-content: center;
}