:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1e3f 100%);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --text-light: #f8fafc;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, sans-serif;
}

body {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--bg-gradient);
    color: var(--text-light);
    padding: 20px;
}

.glass-container {
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 40px;
    width: 100%;
    max-width: 500px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    text-align: center;
}

header h1 {
    font-size: 2rem;
    margin-bottom: 10px;
    letter-spacing: -1px;
}

header p {
    color: #94a3b8;
    margin-bottom: 30px;
}

.upload-area {
    border: 2px dashed rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 40px 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.upload-area:hover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.upload-area i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.hidden { display: none; }

.preview-box {
    animation: fadeIn 0.5s ease-out;
}

#image-preview {
    max-width: 100%;
    max-height: 300px;
    border-radius: 12px;
    margin-top: 20px;
}

.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 20px;
    transition: background 0.2s;
    width: 100%;
}

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

footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.social-links {
    margin-top: 15px;
    display: flex;
    justify-content: center;
    gap: 20px;
}

.social-links a {
    color: #94a3b8;
    font-size: 1.5rem;
    transition: color 0.3s;
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}