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

:root {
    --primary: #FFD700;
    --primary-dark: #FFA500;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --dark: #0a0a0a;
    --darker: #000000;
    --light: #1a1a1a;
    --border: #333333;
    --text: #ffffff;
    --text-light: #cccccc;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
    min-height: 100vh;
    color: var(--text);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.header {
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 6px rgba(255, 215, 0, 0.1);
    border-bottom: 2px solid var(--primary);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--primary);
}

.logo svg {
    color: var(--primary);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: #cccccc;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* Hero */
.hero {
    padding: 4rem 0;
    text-align: center;
    color: white;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 3rem;
    opacity: 0.9;
}

.hero-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

.feature {
    background: rgba(255, 215, 0, 0.05);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 215, 0, 0.3);
    border-radius: 1rem;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform 0.3s, background 0.3s, border-color 0.3s;
}

.feature:hover {
    transform: translateY(-5px);
    background: rgba(255, 215, 0, 0.1);
    border-color: var(--primary);
}

.feature svg {
    flex-shrink: 0;
}

/* Sections */
.section {
    padding: 4rem 0;
    background: #0a0a0a;
}

.section-alt {
    background: #000000;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--primary);
    text-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
}

/* Card */
.card {
    background: #1a1a1a;
    border: 2px solid #333333;
    border-radius: 1rem;
    box-shadow: 0 10px 30px rgba(255, 215, 0, 0.1);
    overflow: hidden;
    max-width: 600px;
    margin: 0 auto;
}

.card-header {
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    color: #000000;
    padding: 2rem;
    text-align: center;
}

.card-header h3 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.card-header p {
    opacity: 0.9;
}

.card-body {
    padding: 2rem;
}

/* Form */
.form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--primary);
}

.form-group input {
    padding: 0.75rem 1rem;
    border: 2px solid #333333;
    background: #000000;
    color: #ffffff;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.2);
}

/* Buttons */
.btn {
    padding: 0.875rem 2rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    color: #000000;
    font-weight: 700;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(255, 215, 0, 0.4);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

/* Result Area */
.result-area {
    margin-top: 2rem;
    padding: 1.5rem;
    border-radius: 0.75rem;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-success {
    background: #d1fae5;
    border: 2px solid var(--success);
    color: #065f46;
}

.result-error {
    background: #fee2e2;
    border: 2px solid var(--danger);
    color: #991b1b;
}

.result-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.result-info {
    display: grid;
    gap: 0.75rem;
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.result-item:last-child {
    border-bottom: none;
}

.result-label {
    font-weight: 600;
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: #1a1a1a;
    border: 2px solid #333333;
    border-radius: 1rem;
    padding: 2rem;
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(255, 215, 0, 0.2);
    border-color: var(--primary);
}

.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(255, 215, 0, 0.3);
    background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
}

.badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    color: #000000;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 700;
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
    margin-bottom: 0.5rem;
}

.currency {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary);
}

.amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
}

.period {
    font-size: 1rem;
    color: var(--text-light);
}

.save {
    color: var(--success);
    font-weight: 600;
    font-size: 0.875rem;
}

.features-list {
    list-style: none;
    margin-bottom: 2rem;
}

.features-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid #333333;
    color: var(--text-light);
}

.features-list li:last-child {
    border-bottom: none;
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: #1a1a1a;
    border: 2px solid #333333;
    border-radius: 0.75rem;
    text-decoration: none;
    color: var(--text);
    transition: all 0.3s;
}

.contact-item:hover {
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    color: #000000;
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(255, 215, 0, 0.3);
}

.contact-item svg {
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
}

.contact-item p {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Footer */
.footer {
    background: var(--darker);
    color: white;
    text-align: center;
    padding: 2rem 0;
}

.footer p {
    opacity: 0.8;
}

.footer p:first-child {
    margin-bottom: 0.5rem;
}

/* Loading */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

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

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .nav {
        gap: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .pricing-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
}