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

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --dark-bg: #0f172a;
    --light-text: #f1f5f9;
    --card-bg: rgba(30, 41, 59, 0.8);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--dark-bg);
    color: var(--light-text);
    overflow-x: hidden;
    position: relative;
}

/* Animated Background */
#animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    overflow: hidden;
}

.particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.orb1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--primary-color), transparent);
    top: -100px;
    left: -100px;
    animation-delay: 0s;
}

.orb2 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, var(--secondary-color), transparent);
    top: 50%;
    right: -100px;
    animation-delay: 5s;
}

.orb3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--accent-color), transparent);
    bottom: -100px;
    left: 30%;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(50px, -50px) scale(1.1);
    }
    50% {
        transform: translate(-30px, 50px) scale(0.9);
    }
    75% {
        transform: translate(70px, 30px) scale(1.05);
    }
}

/* Header */
.header {
    padding: 2rem 5%;
    text-align: center;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
}

.header h1 {
    font-size: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.header p {
    font-size: 1.2rem;
    color: rgba(241, 245, 249, 0.8);
}

/* Main Container */
.container {
    max-width: 900px;
    margin: 3rem auto;
    padding: 0 2rem;
}

/* Card */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.card h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: rgba(241, 245, 249, 0.9);
}

.form-control {
    width: 100%;
    padding: 0.875rem 1.25rem;
    background: rgba(30, 41, 59, 0.6);
    border: 2px solid rgba(99, 102, 241, 0.3);
    border-radius: 10px;
    color: var(--light-text);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(30, 41, 59, 0.8);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
    font-family: inherit;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.file-input-wrapper {
    position: relative;
    overflow: hidden;
    display: inline-block;
    width: 100%;
}

.file-input-wrapper input[type=file] {
    position: absolute;
    left: -9999px;
}

.file-input-label {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: rgba(99, 102, 241, 0.1);
    border: 2px dashed rgba(99, 102, 241, 0.5);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.file-input-label:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--primary-color);
}

.file-preview {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--primary-color);
}

/* Products Section */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.product-card {
    background: rgba(99, 102, 241, 0.1);
    border: 2px solid transparent;
    border-radius: 15px;
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-3px);
    border-color: var(--primary-color);
}

.product-card.selected {
    border-color: var(--accent-color);
    background: rgba(236, 72, 153, 0.1);
}

.product-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.product-price {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-color);
    margin: 0.5rem 0;
}

.product-features {
    list-style: none;
    font-size: 0.875rem;
    opacity: 0.8;
}

.product-features li {
    padding: 0.25rem 0;
}

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

/* Button */
.btn {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Success Message */
.success-message {
    background: rgba(34, 197, 94, 0.1);
    border: 2px solid rgb(34, 197, 94);
    color: rgb(34, 197, 94);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    text-align: center;
    display: none;
}

.success-message.show {
    display: block;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Error Message */
.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 2px solid rgb(239, 68, 68);
    color: rgb(239, 68, 68);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    display: none;
}

.error-message.show {
    display: block;
}

/* WhatsApp Button */
.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 1000;
}

.whatsapp-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6);
}

.whatsapp-btn svg {
    width: 35px;
    height: 35px;
    fill: white;
}

/* Loading Spinner */
.spinner {
    border: 3px solid rgba(99, 102, 241, 0.3);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
    display: none;
}

.spinner.show {
    display: block;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }
    
    .header p {
        font-size: 1rem;
    }
    
    .card {
        padding: 2rem 1.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        margin: 2rem auto;
        padding: 0 1rem;
    }
}