:root {
    --brand-blue: #1F5FE8;
    --brand-white: #FFFFFF;
    --brand-light-gray: #F5F5F5;
    --brand-dark-gray: #333333;
    --brand-text: #2C2C2C;
    --border-radius: 8px;
    --spacing-sm: 12px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--brand-text);
    background-color: #E8EEF7;
    background-image: 
        /* Blueprint grid pattern */
        linear-gradient(rgba(31, 95, 232, 0.15) 1px, transparent 1px),
        linear-gradient(90deg, rgba(31, 95, 232, 0.15) 1px, transparent 1px),
        /* Accent lines every 5 squares */
        linear-gradient(rgba(31, 95, 232, 0.25) 2px, transparent 2px),
        linear-gradient(90deg, rgba(31, 95, 232, 0.25) 2px, transparent 2px);
    background-size: 30px 30px, 30px 30px, 150px 150px, 150px 150px;
    background-position: 0 0, 0 0, 0 0, 0 0;
}

main {
    display: block;
    min-height: 100vh;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

header {
    background: linear-gradient(135deg, #1F5FE8 0%, #1548C5 100%);
    background-image: 
        linear-gradient(135deg, #1F5FE8 0%, #1548C5 100%),
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 100%, 50px 50px, 50px 50px;
    color: var(--brand-white);
    padding: var(--spacing-md) var(--spacing-md);
    text-align: center;
    box-shadow: 0 2px 8px rgba(31, 95, 232, 0.15);
    margin-bottom: var(--spacing-lg);
}

header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

header .subtitle {
    font-size: 1rem;
    font-weight: 400;
    opacity: 0.95;
    letter-spacing: 1px;
}

.logo {
    max-width: 500px;
    height: auto;
    margin: 0 auto;
    display: block;
}

.card {
    background: white;
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    margin-bottom: var(--spacing-md);
}

h1 {
    color: var(--brand-blue);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

h2 {
    color: var(--brand-blue);
    font-size: 1.5rem;
    font-weight: 600;
    margin: var(--spacing-md) 0 var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-md);
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--brand-dark-gray);
}

input[type="text"],
input[type="email"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #E0E0E0;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
    margin-bottom: var(--spacing-md);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--brand-blue);
    box-shadow: 0 0 0 3px rgba(31, 95, 232, 0.1);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

button,
.btn {
    background: linear-gradient(135deg, var(--brand-blue) 0%, #1548C5 100%);
    color: white;
    padding: 14px 32px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    text-decoration: none;
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 1px;
}

button:hover,
.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(31, 95, 232, 0.4);
}

button:active,
.btn:active {
    transform: translateY(0);
}

.plan-output {
    background: var(--brand-light-gray);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--brand-blue);
    white-space: pre-wrap;
    font-size: 1rem;
    line-height: 1.8;
}

.big-3-overview {
    background: linear-gradient(135deg, rgba(31, 95, 232, 0.1) 0%, rgba(21, 72, 197, 0.05) 100%);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin: var(--spacing-md) 0;
}

.big-3-overview ul {
    list-style: none;
    padding: 0;
}

.big-3-overview li {
    padding: 12px 0;
    border-bottom: 1px solid rgba(31, 95, 232, 0.1);
}

.big-3-overview li:last-child {
    border-bottom: none;
}

.big-3-overview strong {
    color: var(--brand-blue);
    font-size: 1.1rem;
}

.profile-summary {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 2px solid var(--brand-blue);
    margin-bottom: var(--spacing-md);
}

.profile-summary p {
    margin-bottom: 8px;
}

.profile-summary strong {
    color: var(--brand-blue);
}

.cta-section {
    background: linear-gradient(135deg, rgba(31, 95, 232, 0.05) 0%, rgba(21, 72, 197, 0.02) 100%);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin: var(--spacing-lg) 0;
    text-align: center;
    border: 2px solid rgba(31, 95, 232, 0.2);
}

.cta-section h2 {
    margin-top: 0;
}

.share-box {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 2px dashed var(--brand-blue);
    margin: var(--spacing-md) 0;
}

.share-link {
    background: var(--brand-light-gray);
    padding: 12px;
    border-radius: var(--border-radius);
    font-family: monospace;
    font-size: 0.95rem;
    word-break: break-all;
    color: var(--brand-blue);
    border: 1px solid #E0E0E0;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
    background: white;
}

table th {
    background: var(--brand-blue);
    color: white;
    padding: 12px;
    text-align: left;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

table td {
    padding: 12px;
    border-bottom: 1px solid #E0E0E0;
}

table tr:hover {
    background: rgba(31, 95, 232, 0.02);
}

.tier-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
}

.tier-starter {
    background: #E0E0E0;
    color: #666;
}

.tier-blueprint {
    background: var(--brand-blue);
    color: white;
}

.tier-vip {
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    color: #333;
}

.referral-info {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.1) 0%, rgba(255, 165, 0, 0.05) 100%);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border-left: 4px solid #FFD700;
    margin: var(--spacing-md) 0;
}

hr {
    border: none;
    border-top: 2px solid rgba(31, 95, 232, 0.1);
    margin: var(--spacing-lg) 0;
}

a {
    color: var(--brand-blue);
    text-decoration: none;
    font-weight: 600;
}

a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    header {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    header h1 {
        font-size: 1.8rem;
    }
    
    .logo {
        max-width: 350px;
    }
    
    .container {
        padding: var(--spacing-sm);
    }
    
    .card {
        padding: var(--spacing-md);
    }
    
    table {
        font-size: 0.9rem;
    }
    
    table th,
    table td {
        padding: 8px;
    }
}