body {
    background: linear-gradient(120deg, #f7faff 0%, #e9eefa 100%);
    color: #232526;
    font-family: 'Inter', 'Segoe UI', 'Roboto', 'Arial', sans-serif;
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

.hero-section {
    background: linear-gradient(120deg, #667eea 0%, #764ba2 100%);
    padding: 64px 0 40px 0;
    border-radius: 0 0 32px 32px;
    box-shadow: 0 8px 32px 0 rgba(60,72,100,0.10);
    margin-bottom: 48px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.hero-section::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: url('https://stripe.com/img/v3/home/hero-bg.svg') center/cover no-repeat;
    opacity: 0.08;
    pointer-events: none;
}
.hero-logo {
    width: 96px;
    height: 96px;
    border-radius: 24px;
    box-shadow: 0 4px 24px rgba(118,75,162,0.18);
    margin-bottom: 24px;
    background: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.hero-title {
    font-size: 3.2rem;
    font-weight: 900;
    color: #fff;
    margin-bottom: 16px;
    letter-spacing: 1.5px;
    text-shadow: 0 4px 24px rgba(102,126,234,0.18);
}
.hero-subtitle {
    font-size: 1.4rem;
    color: #e0e7ff;
    margin-bottom: 28px;
    font-weight: 500;
    text-shadow: 0 2px 8px rgba(102,126,234,0.10);
}
.hero-badges {
    margin-top: 18px;
}
.badge {
    background: #fff;
    color: #764ba2;
    font-weight: 700;
    border-radius: 18px;
    padding: 8px 22px;
    margin: 0 8px;
    font-size: 1.1rem;
    box-shadow: 0 2px 8px rgba(102,126,234,0.10);
    letter-spacing: 0.5px;
    border: none;
    display: inline-block;
}
.badge:hover {
    background: #e0e7ff;
    color: #667eea;
}

.demo-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px 48px 24px;
}
.demo-section {
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 4px 24px rgba(60,72,100,0.10);
    margin-bottom: 32px;
    padding: 40px 36px 32px 36px;
    border: none;
    backdrop-filter: none;
}
.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    color: #232526;
    margin-bottom: 18px;
    letter-spacing: 0.5px;
}
.section-description {
    color: #667eea;
    margin-bottom: 24px;
    font-size: 1.18rem;
    font-weight: 500;
}
.demo-controls, .demo-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 24px;
}
.demo-button, .action-button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    border-radius: 32px;
    padding: 16px 38px;
    font-size: 1.18rem;
    font-weight: 800;
    box-shadow: 0 2px 16px rgba(102,126,234,0.12);
    cursor: pointer;
    transition: background 0.18s, transform 0.12s, box-shadow 0.18s;
    outline: none;
    display: flex;
    align-items: center;
    gap: 12px;
    border: none;
}
.demo-button.primary, .action-button.show-all {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}
.demo-button.secondary, .action-button.hide-all {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}
.demo-button.success {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}
.demo-button.dark {
    background: linear-gradient(135deg, #232526 0%, #414345 100%);
}
.demo-button.warning {
    background: linear-gradient(135deg, #f7971e 0%, #ffd200 100%);
    color: #232526;
}
.demo-button.info {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}
.demo-button:hover, .action-button:hover {
    filter: brightness(1.10);
    transform: translateY(-2px) scale(1.06);
    box-shadow: 0 8px 32px 0 rgba(102,126,234,0.18);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
    margin-top: 24px;
}
.feature-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 2px 12px rgba(102,126,234,0.08);
    padding: 32px 24px;
    text-align: center;
    color: #232526;
    transition: box-shadow 0.18s, transform 0.12s;
    border: none;
}
.feature-card:hover {
    box-shadow: 0 8px 32px rgba(102,126,234,0.18);
    transform: translateY(-2px) scale(1.03);
}
.feature-icon {
    font-size: 2.6rem;
    margin-bottom: 16px;
    color: #667eea;
}

.code-examples {
    background: #f7faff;
    border-radius: 14px;
    padding: 24px 20px 16px 20px;
    margin-bottom: 24px;
    box-shadow: 0 2px 8px rgba(102,126,234,0.08);
    border: none;
}
.code-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 14px;
}
.tab-button {
    background: #e0e7ff;
    color: #667eea;
    border: none;
    border-radius: 10px 10px 0 0;
    padding: 10px 24px;
    font-weight: 700;
    font-size: 1.08rem;
    cursor: pointer;
    transition: background 0.18s;
}
.tab-button.active, .tab-button:hover {
    background: #667eea;
    color: #fff;
}
.code-content {
    background: #232526;
    color: #e0e7ff;
    border-radius: 0 0 14px 14px;
    padding: 24px;
    font-size: 1.08rem;
    font-family: 'Fira Mono', 'Consolas', 'Menlo', monospace;
    overflow-x: auto;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 24px;
    margin-top: 24px;
}
.stat-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(102,126,234,0.08);
    padding: 18px 12px;
    text-align: center;
    color: #232526;
    border: none;
}
.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: #764ba2;
    margin-bottom: 6px;
}
.stat-label {
    font-size: 1.18rem;
    color: #667eea;
}

.window-content, .custom-content, .interactive-content, .data-content {
    padding: 24px 18px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 2px 8px rgba(102,126,234,0.06);
    margin-bottom: 12px;
    border: none;
}
.window-features, .window-actions {
    margin-top: 14px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.feature-item {
    background: #e0e7ff;
    color: #667eea;
    border-radius: 10px;
    padding: 8px 18px;
    font-size: 1.08rem;
    font-weight: 600;
    border: none;
}
.window-button, .counter-btn, .action-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    border-radius: 32px;
    padding: 14px 32px;
    font-size: 1.18rem;
    font-weight: 800;
    cursor: pointer;
    transition: background 0.18s, transform 0.12s, box-shadow 0.18s;
    margin-right: 8px;
    box-shadow: 0 2px 16px rgba(102,126,234,0.12);
}
.window-button.danger { background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }
.window-button.small { font-size: 1rem; padding: 10px 18px; }
.window-button:hover, .counter-btn:hover, .action-btn:hover {
    filter: brightness(1.10);
    transform: translateY(-2px) scale(1.06);
    box-shadow: 0 8px 32px 0 rgba(102,126,234,0.18);
}

.card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(102,126,234,0.08);
    padding: 18px 12px;
    margin-bottom: 12px;
    border: none;
}

.counter-section {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-bottom: 10px;
}
.counter-controls {
    display: flex;
    gap: 8px;
}
.color-picker {
    margin-top: 10px;
}
.color-options {
    display: flex;
    gap: 8px;
}
.color-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid #fff;
    cursor: pointer;
    transition: border 0.18s, transform 0.12s;
}
.color-btn:hover {
    border: 2px solid #764ba2;
    transform: scale(1.12);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(102,126,234,0.06);
    border: none;
}
.data-table th, .data-table td {
    padding: 12px 10px;
    text-align: left;
}
.data-table th {
    background: #e0e7ff;
    color: #667eea;
    font-weight: 700;
}
.data-table tr:nth-child(even) {
    background: #f7faff;
}
.status {
    padding: 6px 14px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 1.08rem;
}
.status.active { background: #43e97b; color: #fff; }
.status.pending { background: #ffd200; color: #232526; }
.status.completed { background: #764ba2; color: #fff; }
.progress-bar {
    background: #e0e7ff;
    border-radius: 10px;
    height: 12px;
    width: 120px;
    overflow: hidden;
    margin-right: 8px;
    display: inline-block;
}
.progress-fill {
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    height: 100%;
    border-radius: 10px;
    transition: width 0.3s cubic-bezier(.23,1.01,.32,1);
}
.progress-text {
    font-size: 1.08rem;
    color: #764ba2;
    font-weight: 700;
}

@media (max-width: 900px) {
    .demo-container { padding: 0 8px; }
    .demo-section { padding: 18px 6px 16px 6px; }
    .features-grid { gap: 16px; }
}
@media (max-width: 600px) {
    .hero-title { font-size: 2rem; }
    .section-title { font-size: 1.2rem; }
    .demo-section { padding: 10px 2px 8px 2px; }
    .features-grid { grid-template-columns: 1fr; }
}