:root {
    --primary-color: #6366f1;
    --secondary-color: #4f46e5;
    --background-color: #f8fafc;
    --text-color: #1e293b;
    --border-color: #e2e8f0;
    --success-color: #22c55e;
    --error-color: #ef4444;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--background-color);
}

.navbar {
    background: white;
    padding: 1rem 2rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary-color);
}

main {
    margin-top: 4rem;
    padding: 2rem;
}

.hero {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 1rem;
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.tool-section {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.tool-section h2 {
    color: var(--text-color);
    margin-bottom: 1.5rem;
}

.tool-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

input[type="text"],
input[type="file"],
textarea,
select {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    width: 100%;
}

textarea {
    min-height: 100px;
    resize: vertical;
}

button {
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 0.5rem;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.3s;
}

.upload-area:hover {
    border-color: var(--primary-color);
}

.upload-area i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.result-area {
    min-height: 100px;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    display: none;
}

.controls {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.slider-container {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.slider-container label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

input[type="range"] {
    width: 150px;
}

footer {
    text-align: center;
    padding: 2rem;
    background: white;
    border-top: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        flex-direction: column;
        align-items: center;
    }

    .hero {
        padding: 2rem 1rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .tool-section {
        padding: 1rem;
    }
}