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

body {
    background: #0d0d0f;
    color: #e5e7eb;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    padding: 2rem;
}

.purple-c {
    color: #a855f7;
}

.hero {
    text-align: center;
    margin-top: 3rem;
    margin-bottom: 3rem;
}

.logo {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -1px;
}

.subtitle {
    font-size: 1.3rem;
    margin-top: 0.5rem;
    opacity: 0.9;
}

.tagline {
    font-size: 1rem;
    margin-top: 0.3rem;
    opacity: 0.7;
}

.upload-section {
    display: flex;
    justify-content: center;
    margin-top: 3rem;
    margin-bottom: 4rem;
}

.upload-box {
    width: 350px;
    height: 220px;
    border: 2px dashed #a855f7;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 0.6rem;
    cursor: pointer;
    transition: 0.2s ease;
    background: rgba(255, 255, 255, 0.02);
}

.upload-box:hover {
    background: rgba(168, 85, 247, 0.08);
    border-color: #c084fc
}

.upload-box i {
    font-size: 2rem;
    color: #a855f7;
}

.upload-text {
    font-size: 1.1rem;
}

.upload-sub {
    font-size: 0.85rem;
    opacity: 0.6;
}

#fileInput {
    display: none;
}

.how-it-works {
    text-align: center;
    margin-top: 4rem;
}

.how-it-works h2 {
    font-size: 2rem;
    margin-top: 4rem;
}

.steps {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.step {
    background: rgba(255, 255, 255, 0.03);
    padding: 1.5rem;
    border-radius: 14px;
    width: 220px;
    border: 1px solid rgba(255, 255, 255, 0.03);
    transition: 0.2s ease;
}

.step:hover {
    background: rgba(168, 85, 247, 0.08);
    border-color: #a855f7;
}

.step h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.privacy {
    text-align: center;
    margin-top: 4rem;
    opacity: 0.85;
}

.privacy h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.footer {
    text-align: center;
    margin-top: 5rem;
    opacity: 0.5;
    font-size: 0.9rem;
}