:root {
    --ais-primary: #6366f1;
    --ais-primary-dark: #4f46e5;
    --ais-accent: #0ea5e9;
    --ais-surface: #ffffff;
    --ais-surface-alt: #f8fafc;
    --ais-border: #e2e8f0;
    --ais-text: #0f172a;
    --ais-muted: #64748b;
    --ais-success: #059669;
    --ais-gradient: linear-gradient(135deg, #4f46e5 0%, #0ea5e9 100%);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--ais-text);
    line-height: 1.6;
    background: var(--ais-surface);
}
a { color: var(--ais-primary); text-decoration: none; }
a:hover { color: var(--ais-primary-dark); }

.ais-header {
    background: rgba(255,255,255,.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--ais-border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.ais-nav {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.ais-logo { display: inline-flex; align-items: center; gap: .5rem; font-weight: 800; color: var(--ais-text); }
.ais-logo-mark {
    background: var(--ais-gradient);
    color: #fff;
    padding: .25rem .55rem;
    border-radius: 8px;
    font-size: .85rem;
}
.ais-nav-links { display: flex; gap: 1.5rem; }
.ais-nav-links a { color: var(--ais-text); font-weight: 500; font-size: .95rem; }

.ais-hero {
    background: var(--ais-gradient);
    color: #fff;
    padding: 4.5rem 1.5rem 5rem;
}
.ais-hero-inner { max-width: 900px; margin: 0 auto; text-align: center; }
.ais-hero h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; margin-bottom: 1rem; }
.ais-hero p { font-size: 1.15rem; opacity: .95; margin-bottom: 2rem; }
.ais-btn {
    display: inline-block;
    padding: .85rem 1.75rem;
    border-radius: 10px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: transform .15s, box-shadow .15s;
}
.ais-btn-primary { background: #fff; color: var(--ais-primary-dark); }
.ais-btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(0,0,0,.15); color: var(--ais-primary-dark); }
.ais-btn-outline { background: transparent; border: 2px solid #fff; color: #fff; }
.ais-btn-outline:hover { background: rgba(255,255,255,.12); color: #fff; }
.ais-btn-dark { background: var(--ais-primary-dark); color: #fff; }
.ais-btn-dark:hover { background: #4338ca; color: #fff; }

.ais-section { max-width: 900px; margin: 0 auto; padding: 3rem 1.5rem; }
.ais-card {
    background: var(--ais-surface);
    border: 1px solid var(--ais-border);
    border-radius: 14px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(15,23,42,.06);
}
.ais-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 2rem; }
.ais-feature { text-align: center; padding: 1.5rem; }
.ais-feature h3 { font-size: 1rem; margin-bottom: .5rem; }
.ais-feature p { color: var(--ais-muted); font-size: .9rem; }

.ais-wizard-steps {
    display: flex;
    gap: .5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}
.ais-step {
    flex: 1;
    min-width: 120px;
    text-align: center;
    padding: .75rem;
    border-radius: 8px;
    background: var(--ais-surface-alt);
    color: var(--ais-muted);
    font-size: .85rem;
    font-weight: 600;
}
.ais-step.active { background: var(--ais-primary); color: #fff; }
.ais-step.done { background: #e0e7ff; color: var(--ais-primary-dark); }

.ais-form-group { margin-bottom: 1.25rem; }
.ais-form-group label { display: block; font-weight: 600; margin-bottom: .4rem; font-size: .9rem; }
.ais-form-control {
    width: 100%;
    padding: .65rem .85rem;
    border: 1px solid var(--ais-border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
}
.ais-form-control:focus { outline: none; border-color: var(--ais-primary); box-shadow: 0 0 0 3px rgba(99,102,241,.15); }
.ais-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 640px) { .ais-row, .ais-features { grid-template-columns: 1fr; } }

.ais-format-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .75rem; }
.ais-format-option {
    border: 2px solid var(--ais-border);
    border-radius: 10px;
    padding: 1rem;
    cursor: pointer;
    transition: border-color .15s;
}
.ais-format-option.selected { border-color: var(--ais-primary); background: #eef2ff; }
.ais-format-option input { display: none; }

.ais-preview-box {
    text-align: center;
    padding: 1.5rem;
    background: var(--ais-surface-alt);
    border-radius: 12px;
    min-height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.ais-preview-box img { max-width: 100%; max-height: 400px; border-radius: 8px; box-shadow: 0 8px 30px rgba(0,0,0,.12); }

.ais-alert { padding: 1rem; border-radius: 8px; margin-bottom: 1rem; }
.ais-alert-info { background: #eff6ff; color: #1e40af; border: 1px solid #bfdbfe; }
.ais-alert-danger { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.ais-alert-success { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }

.ais-footer {
    border-top: 1px solid var(--ais-border);
    padding: 2rem 1.5rem;
    margin-top: 3rem;
    background: var(--ais-surface-alt);
}
.ais-footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    color: var(--ais-muted);
    font-size: .9rem;
}
.ais-footer-links { display: flex; gap: 1.25rem; }

.legal-content { max-width: 820px; margin: 0 auto; padding: 3rem 1.5rem; }
.legal-content h1 { font-size: 2rem; margin-bottom: 1.5rem; }
.legal-content h2 { font-size: 1.25rem; margin: 2rem 0 .75rem; }
.legal-content p { margin-bottom: 1rem; color: var(--ais-muted); }

.ais-spinner {
    width: 40px; height: 40px;
    border: 3px solid var(--ais-border);
    border-top-color: var(--ais-primary);
    border-radius: 50%;
    animation: ais-spin .8s linear infinite;
}
@keyframes ais-spin { to { transform: rotate(360deg); } }

.ais-checkout-options { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
@media (max-width: 768px) { .ais-checkout-options { grid-template-columns: 1fr; } }
.ais-checkout-card {
    border: 2px solid var(--ais-border);
    border-radius: 12px;
    padding: 1.5rem;
    cursor: pointer;
}
.ais-checkout-card.selected { border-color: var(--ais-primary); background: #eef2ff; }
.ais-price { font-size: 1.75rem; font-weight: 800; color: var(--ais-primary-dark); }