:root {
    --bg-color: #f4f4f4;
    --card-bg: #ffffff;
    --text-main: #333;
    --border-color: #ddd;
    --primary-btn: #2c3e50;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    margin: 0;
    padding: 20px;
    line-height: 1.5;
}

.container {
    max-width: 600px;
    margin: 0 auto;
}

/* Status Card */
.status-card {
    background: var(--card-bg);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.status-card h1 { margin: 5px 0; font-size: 2rem; }
.status-card .amount { margin: 0; font-weight: 300; font-size: 2.5rem; }
.label { text-transform: uppercase; font-size: 0.8rem; color: #666; letter-spacing: 1px; margin: 0; }

/* Form */
.action-panel {
    background: var(--card-bg);
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.entry-form { display: flex; flex-direction: column; gap: 15px; }
.form-group { display: flex; flex-direction: column; }
.form-group label { font-weight: bold; font-size: 0.9rem; margin-bottom: 5px; }

input, select {
    padding: 10px;
    font-size: 1rem;
    border: 1px solid #ccc;
    border-radius: 4px;
}

button {
    padding: 12px;
    font-size: 1rem;
    background: var(--primary-btn);
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 4px;
}

button:hover { opacity: 0.9; }

/* History Table */
table { width: 100%; border-collapse: collapse; background: #fff; }
th, td { text-align: left; padding: 12px; border-bottom: 1px solid var(--border-color); font-size: 0.9rem;}
th { background-color: #eee; font-size: 0.8rem; text-transform: uppercase; }
.note { color: #666; font-style: italic; }

.btn-delete {
    background: transparent;
    color: #999;
    font-size: 1.2rem;
    padding: 0;
    width: auto;
}
.btn-delete:hover { color: red; background: transparent; }