:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --accent: #22c55e;
    --error: #ef4444;
}

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

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.navbar {
    background-color: rgba(30, 41, 59, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 65px;
    padding: 0 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.logo-icon {
    font-size: 1.25rem;
}

.logo h1 {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: #fff;
}

.nav-links {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.85rem;
    transition: color 0.2s;
}

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

.admin-link {
    background-color: var(--border-color);
    padding: 0.3rem 0.6rem;
    border-radius: 6px;
    font-size: 0.8rem !important;
}

main {
    flex: 1;
}

.hero {
    padding: 3rem 1rem;
    text-align: center;
}

.hero-container h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(to right, #818cf8, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-container p {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 2rem;
}

.downloader-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
    max-width: 700px;
    margin: 0 auto;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
}

.input-group {
    display: flex;
    gap: 0.75rem;
}

.input-group input {
    flex: 1;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.875rem 1rem;
    color: var(--text-color);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

.input-group input:focus {
    border-color: var(--primary);
}

#download-btn {
    background-color: var(--primary);
    color: #fff;
    border: none;
    border-radius: 0.5rem;
    padding: 0 1.5rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 120px;
}

#download-btn:hover {
    background-color: var(--primary-hover);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.result-container, .error-container {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 0.5rem;
    text-align: left;
    word-break: break-word;
}

.result-container {
    background-color: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.error-container {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.platforms-section, .steps-section, .faq-section {
    padding: 3rem 1rem;
    text-align: center;
}

.platforms-section h3, .steps-section h3, .faq-section h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.platform-grid, .steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
}

.platform-card, .step-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.25rem;
    transition: transform 0.2s;
}

.platform-card:hover, .step-card:hover {
    transform: translateY(-4px);
}

.platform-icon {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    display: block;
}

.platform-card h4, .step-card h4 {
    margin-bottom: 0.3rem;
    font-size: 1rem;
}

.platform-card p, .step-card p, .faq-item p {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.step-number {
    background-color: var(--primary);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin: 0 auto 0.75rem auto;
    font-size: 0.9rem;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.faq-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1rem;
}

.faq-item h4 {
    margin-bottom: 0.3rem;
    font-size: 0.95rem;
}

.footer {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 1rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
}

.disclaimer {
    margin-top: 0.4rem;
    font-size: 0.7rem;
}

@media (max-width: 480px) {
    .nav-links {
        gap: 0.5rem;
    }
    .nav-links a {
        font-size: 0.75rem;
    }
    .admin-link {
        padding: 0.2rem 0.4rem;
    }
    .hero-container h2 {
        font-size: 1.75rem;
    }
}

@media (max-width: 768px) {
    .input-group {
        flex-direction: column;
    }
    #download-btn {
        padding: 0.875rem;
        width: 100%;
    }
}