:root {
    --primary: #ff6600;
    --primary-hover: #e65c00;
    --bg-dark: #0a0a0c;
    --card-bg: rgba(255, 255, 255, 0.05);
    --text-main: #ffffff;
    --text-muted: #a0a0a0;
    --accent: #4a90e2;
    --glass-border: rgba(255, 255, 255, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(255, 102, 0, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(74, 144, 226, 0.1) 0%, transparent 40%);
}

.container {
    width: 100%;
    max-width: 600px;
    padding: 2rem;
    position: relative;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transform: translateY(0);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.promo-banner {
    background: linear-gradient(90deg, var(--primary), #ff8c00);
    color: white;
    text-align: center;
    padding: 10px;
    font-weight: 800;
    font-size: 0.85rem;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    z-index: 10;
}

.logo-container {
    text-align: center;
    margin-bottom: 2.5rem;
}

.logo-container h1 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -1px;
    background: linear-gradient(135deg, #fff 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.step {
    display: none;
    animation: fadeIn 0.5s ease-out;
}

.step.active {
    display: block;
}

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

h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

select, input[type="text"], input[type="email"], input[type="tel"], input[type="number"] {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 14px;
}

select:focus, input:focus {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.07);
    box-shadow: 0 0 0 4px rgba(255, 102, 0, 0.2);
}

select option {
    background-color: #1a1a1c;
    color: white;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.03);
    padding: 12px 16px;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    cursor: pointer;
    transition: var(--transition);
}

.checkbox-group:hover {
    background: rgba(255, 255, 255, 0.07);
}

.checkbox-group input {
    width: 20px;
    height: 20px;
    accent-color: var(--primary);
}

.btn {
    width: 100%;
    padding: 14px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -10px var(--primary);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--glass-border);
    margin-top: 0.5rem;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: white;
}

.offer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.offer-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.offer-card:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: var(--primary);
    transform: translateY(-4px);
}

.offer-card.selected {
    background: rgba(255, 102, 0, 0.1);
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary);
}

.offer-card.recommended::before {
    content: 'TOP';
    position: absolute;
    top: 5px;
    right: -25px;
    background: var(--primary);
    padding: 2px 30px;
    font-size: 0.6rem;
    font-weight: 900;
    transform: rotate(45deg);
}

.price-tag {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary);
}

.price-tag span {
    font-size: 1rem;
    color: var(--text-muted);
}

ul.features {
    list-style: none;
    margin: 1rem 0;
}

ul.features li {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
}

ul.features li::before {
    content: '✓';
    color: var(--primary);
    font-weight: bold;
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
    display: none;
}

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

@media (max-width: 480px) {
    .card {
        padding: 1.5rem;
    }
}