/* ===== Reset & Base ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-dark: #0f0f1a;
    --bg-card: #1a1a2e;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --gradient-start: #6366f1;
    --gradient-end: #a855f7;
}

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

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
    background:
        radial-gradient(ellipse at top, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        var(--bg-dark);
}

.hero-content {
    max-width: 600px;
}

.logo {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

h1 {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* ===== Download Button ===== */
.download-btn {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-size: 1.25rem;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5);
}

.download-icon {
    font-size: 1.5rem;
}

.download-size {
    font-size: 0.75rem;
    font-weight: 400;
    opacity: 0.8;
}

.note {
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ===== Sections ===== */
section {
    padding: 4rem 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 2.5rem;
}

/* ===== Features Grid ===== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.2s, border-color 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.feature-card ul {
    list-style: none;
    color: var(--text-secondary);
}

.feature-card li {
    padding: 0.25rem 0;
}

.feature-card li::before {
    content: "✓ ";
    color: var(--accent);
}

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

.step {
    text-align: center;
    width: 180px;
}

.step p {
    min-height: 3em;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-number {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

/* ===== Table ===== */
table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
}

th,
td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

th {
    background: rgba(99, 102, 241, 0.1);
    font-weight: 600;
}

tr.highlight {
    background: rgba(99, 102, 241, 0.15);
}

/* ===== Ad Section ===== */
.ad-section {
    padding: 2rem;
    text-align: center;
}

.ad-container {
    max-width: 728px;
    min-height: 90px;
    margin: 0 auto;
    background: var(--bg-card);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px dashed rgba(255, 255, 255, 0.1);
}

.ad-placeholder {
    color: var(--text-secondary);
    font-size: 0.75rem;
    opacity: 0.5;
}

/* ===== Footer ===== */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
    h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1rem;
    }

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