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

:root {
    --primary: #ff006e;
    --secondary: #8338ec;
    --gradient: linear-gradient(135deg, var(--primary), var(--secondary));
    --dark: #1a1a2e;
    --darker: #0f0f1e;
    --text: #eee;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* HEADER MIT LOGO */
.header {
    text-align: center;
    padding: 60px 20px 40px;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.logo h1 {
    font-size: 4rem;
    font-weight: 900;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.3rem;
    color: var(--text);
    max-width: 600px;
    margin: 0 auto;
}

/* DOWNLOAD BOX */
.download-box {
    background: rgba(255,255,255,0.05);
    border: 2px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 40px;
    margin: 40px 0;
    backdrop-filter: blur(10px);
}

.input-group {
    display: flex;
    gap: 15px;
}

.input-group input {
    flex: 1;
    padding: 20px 25px;
    background: rgba(0,0,0,0.5);
    border: 2px solid rgba(255,255,255,0.2);
    border-radius: 15px;
    color: #fff;
    font-size: 1.1rem;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(255,0,110,0.3);
}

.btn-download {
    padding: 20px 40px;
    background: var(--gradient);
    border: none;
    border-radius: 15px;
    color: #fff;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s;
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255,0,110,0.5);
}

/* PLATFORMS */
.platforms {
    margin: 60px 0;
    text-align: center;
}

.platforms h3 {
    font-size: 2rem;
    margin-bottom: 40px;
    color: #fff;
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
}

.platform-card {
    background: rgba(255,255,255,0.05);
    padding: 30px 20px;
    border-radius: 15px;
    border: 2px solid rgba(255,255,255,0.1);
    transition: all 0.3s;
    cursor: pointer;
}

.platform-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(255,0,110,0.3);
}

.platform-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 15px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.platform-icon.instagram {
    background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
}

.platform-icon.tiktok {
    background: linear-gradient(135deg, #00f2ea, #ff0050);
}

.platform-icon.youtube {
    background: #ff0000;
}

.platform-icon.facebook {
    background: #1877f2;
}

.platform-icon.twitter {
    background: #1da1f2;
}

.platform-icon.vimeo {
    background: #1ab7ea;
}

.platform-card span {
    font-weight: 600;
    color: #fff;
}

/* FEATURES */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 60px 0;
}

.feature {
    text-align: center;
    padding: 30px;
    background: rgba(255,255,255,0.03);
    border-radius: 15px;
    border: 1px solid rgba(255,255,255,0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature h4 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: #fff;
}

.feature p {
    color: var(--text);
}

/* HOW TO */
.how-to {
    margin: 60px 0;
    text-align: center;
}

.how-to h3 {
    font-size: 2rem;
    margin-bottom: 50px;
    color: #fff;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.step {
    position: relative;
}

.step-number {
    display: inline-block;
    width: 60px;
    height: 60px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 900;
    margin: 0 auto 20px;
    color: #fff;
}

.step h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: #fff;
}

.step p {
    color: var(--text);
    font-size: 0.95rem;
}

/* RESULT */
.result-success {
    background: rgba(0,255,136,0.1);
    border: 2px solid rgba(0,255,136,0.3);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
}

.result-thumbnail {
    max-width: 400px;
    width: 100%;
    border-radius: 10px;
    margin-bottom: 20px;
}

.result-success h4 {
    color: #fff;
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.download-links {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-download-result {
    padding: 15px 30px;
    background: var(--gradient);
    color: #fff;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-download-result:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(255,0,110,0.5);
}

.loading {
    text-align: center;
    padding: 40px;
    font-size: 1.2rem;
    color: #fff;
}

.error-message {
    background: rgba(255,71,87,0.1);
    border: 2px solid rgba(255,71,87,0.3);
    color: #ff4757;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    font-weight: 600;
}

/* FOOTER */
.footer {
    margin-top: 80px;
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-links {
    margin-top: 20px;
    display: flex;
    gap: 30px;
    justify-content: center;
}

.footer-links a {
    color: var(--text);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #fff;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .logo h1 {
        font-size: 2.5rem;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .btn-download {
        width: 100%;
        justify-content: center;
    }
    
    .platform-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .steps {
        grid-template-columns: 1fr;
    }
}