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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f4f6f9;
    color: #333;
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

header {
    margin-bottom: 24px;
    text-align: center;
}

header h1 {
    color: #1a73e8;
    font-size: 28px;
}

.subtitle {
    color: #666;
    font-size: 14px;
    margin-top: 4px;
}

.card {
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    padding: 24px;
    margin-bottom: 24px;
}

.card h2 {
    font-size: 18px;
    color: #202124;
    margin-bottom: 16px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.card-header h2 {
    margin-bottom: 0;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
    color: #444;
}

.form-group input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: #1a73e8;
}

button {
    background-color: #1a73e8;
    color: #ffffff;
    border: none;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #1557b0;
}

.secondary-btn {
    background-color: #f1f3f4;
    color: #3c4043;
    padding: 6px 12px;
    font-size: 13px;
}

.secondary-btn:hover {
    background-color: #e8eaed;
}

.approve-btn {
    background-color: #34a853;
    padding: 6px 12px;
    font-size: 12px;
}

.approve-btn:hover {
    background-color: #2d8e47;
}

.approve-btn:disabled {
    background-color: #dadce0;
    cursor: not-allowed;
}

.message {
    margin-top: 16px;
    padding: 12px;
    border-radius: 6px;
    font-size: 14px;
}

.message.success {
    background-color: #e6f4ea;
    color: #137333;
    border: 1px solid #ceedd5;
}

.message.error {
    background-color: #fce8e6;
    color: #c5221f;
    border: 1px solid #fad2cf;
}

.hidden {
    display: none;
}

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

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

th, td {
    padding: 12px 10px;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

th {
    background-color: #f8f9fa;
    color: #5f6368;
    font-weight: 600;
}

.status-badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.status-badge.pending {
    background-color: #fef7e0;
    color: #b06000;
}

.status-badge.approved {
    background-color: #e6f4ea;
    color: #137333;
}

.loading {
    text-align: center;
    color: #70757a;
    padding: 24px 0;
}