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

:root {
    --bg: #fff7f9;
    --surface: #ffffff;
    --primary: #ff9fb3;
    --primary-dark: #ff6f91;
    --accent: #ffd6df;
    --result-bg: #fff0f3;
    --text: #69355a;
    --muted: #9e8595;
    --border: #ffe7ec;
}

body {
    font-family: Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px;
    align-items: center;
}

header {
    background-color: var(--primary-dark);
    color: white;
    padding: 20px 0;
    margin-bottom: 30px;
}

header h1 {
    text-align: center;
}

h2 {
    color: var(--primary);
    margin-bottom: 20px;
    text-align: center;
}

.header-section {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.mode-toggle {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.mode-btn {
    padding: 10px 20px;
    background-color: var(--accent);
    color: var(--text);
    border: 2px solid var(--primary);
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.mode-btn:hover {
    background-color: var(--primary);
    color: white;
}

.mode-btn.active {
    background-color: var(--primary);
    color: white;
}

.mode-section {
    display: none;
}

.mode-section.active {
    display: block;
}

main {
    background-color: var(--surface);
    padding: 24px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    max-width: 720px;
    margin: 0 auto;
}

form {
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    background-color: var(--surface);
    padding: 24px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

label {
    margin-top: 15px;
    font-weight: bold;
}

input,
select {
    padding: 10px;
    margin-top: 5px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 14px;
    width: 100%;
    box-sizing: border-box;
}

button {
    margin-top: 20px;
    padding: 12px;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
}

button:hover {
    background-color: var(--primary-dark);
}

.result {
    margin-top: 30px;
    padding: 20px;
    background-color: var(--result-bg);
    border-left: 4px solid var(--primary);
    border-radius: 4px;
}

/* Table styles */
.table-container {
    overflow-x: auto;
    margin-top: 20px;
    border-radius: 8px;
    -webkit-overflow-scrolling: touch;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    font-size: 14px;
}

th,
td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

th {
    background: var(--primary);
    color: var(--surface);
    font-weight: 700;
}

tbody tr:nth-child(even) {
    background: var(--result-bg);
}

tbody tr:hover {
    background: var(--accent);
}

caption {
    caption-side: top;
    text-align: left;
    font-weight: 700;
    color: var(--primary-dark);
    padding: 8px 0;
}

footer {
    text-align: center;
    margin-top: 30px;
    color: var(--muted);
    font-size: 14px;
}

/* Mobile Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 20px;
    }
    
    main {
        padding: 16px;
        border-radius: 6px;
    }
    
    form {
        max-width: 100%;
    }
    
    label {
        font-size: 15px;
    }
    
    input,
    select {
        padding: 12px;
        font-size: 16px;
        border-radius: 4px;
    }
    
    button {
        padding: 14px 20px;
        font-size: 16px;
    }
    
    table {
        font-size: 13px;
    }
    
    th,
    td {
        padding: 10px 12px;
    }
    
    h2 {
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 15px;
    }
    
    header h1 {
        font-size: 22px;
    }
    
    h2 {
        font-size: 20px;
        margin-bottom: 15px;
    }
    
    main {
        padding: 12px;
        max-width: 90%;
    }
    
    form {
        max-width: 100%;
    }
    
    label {
        font-size: 14px;
        margin-top: 12px;
    }
    
    input,
    select {
        padding: 12px;
        font-size: 16px;
        margin-top: 6px;
    }
    
    button {
        padding: 14px 20px;
        font-size: 16px;
        margin-top: 15px;
    }
    
    .result {
        padding: 15px;
        margin-top: 20px;
    }
    
    .table-container {
        overflow-x: visible;
    }
    
    table {
        font-size: 12px;
        border-collapse: separate;
        border-spacing: 0;
    }
    
    table thead {
        display: none;
    }
    
    table tr {
        display: block;
        border: 1px solid var(--border);
        border-radius: 8px;
        margin-bottom: 15px;
        background: var(--surface);
    }
    
    table td {
        display: block;
        padding: 12px;
        text-align: right;
        border: none;
        border-bottom: 1px solid var(--border);
        padding-left: 50%;
        position: relative;
    }
    
    table td:last-child {
        border-bottom: none;
    }
    
    table td::before {
        content: attr(data-label);
        position: absolute;
        left: 12px;
        text-align: left;
        font-weight: bold;
        color: var(--primary);
    }
    
    caption {
        padding: 6px 0;
    }
    
    footer {
        font-size: 12px;
        margin-top: 20px;
    }
}