:root {
    --primary-color: #ff5f7c;
    --secondary-color: #4a4a4a;
    --background-color: #f0f2f5;
    --card-background: #ffffff;
    --border-color: #e0e0e0;
    --font-color: #333333;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background-color);
    color: var(--font-color);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: var(--primary-color);
    color: #ffffff;
    text-align: center;
    padding: 4rem 0 2rem;
    position: relative;
    overflow: hidden;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

main {
    flex: 1;
    padding: 3rem 0;
}

.converter-section {
    background-color: var(--card-background);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    padding: 2.5rem;
    text-align: center;
}

.converter-section h2 {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: var(--secondary-color);
}

.input-group {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 1.5rem;
}

.input-group input {
    flex: 1;
    max-width: 500px;
    padding: 1rem 1.2rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    transition: all 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 95, 124, 0.2);
}

.input-group button {
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    background-color: var(--primary-color);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.input-group button:hover {
    background-color: #e64a6d;
    transform: translateY(-2px);
}

.input-group button:active {
    transform: translateY(0);
}

.status-message {
    min-height: 20px;
    font-style: italic;
    color: #555;
    margin-top: 1rem;
}

.download-area {
    margin-top: 2rem;
    padding: 2rem;
    border: 2px dashed var(--border-color);
    border-radius: 12px;
}

.download-area h3 {
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.download-button {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffffff;
    background-color: #28a745;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.download-button:hover {
    background-color: #218838;
    transform: translateY(-2px);
}

footer {
    background-color: var(--secondary-color);
    color: #ffffff;
    text-align: center;
    padding: 1.5rem 0;
    margin-top: auto;
}

@media (max-width: 768px) {
    .input-group {
        flex-direction: column;
        gap: 15px;
    }

    .input-group button {
        width: 100%;
    }
}