:root {
    --bg-color: #0f1115;
    --card-bg: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: #a0a5b1;
    --accent-purple: #9b6b9e; /* Lilac Purple */
    --accent-pink: #d98cb3;   /* Petal Pink */
    --accent-glow: rgba(155, 107, 158, 0.4);
    --nav-bg: rgba(15, 17, 21, 0.8);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3 {
    font-weight: 600;
    line-height: 1.2;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 22px;
    width: auto;
    display: block;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--text-primary);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-pink));
    color: white;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(217, 140, 179, 0.6);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    width: 100%;
}

.nav-cta {
    background: white;
    color: var(--bg-color);
    padding: 0.5rem 1.2rem;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
}

/* Hero Section */
.hero {
    padding: 10rem 2rem 4rem;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.hero-badge {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    letter-spacing: 1px;
}

.hero-title {
    font-size: 4rem;
    background: linear-gradient(to right, #fff, #a0a5b1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 4rem;
}

.hero-image-container {
    position: relative;
    width: 100%;
    max-width: 800px;
}

.glow-effect {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    height: 60%;
    background: var(--accent-purple);
    filter: blur(100px);
    opacity: 0.5;
    z-index: -1;
}

.hero-product-img {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.5));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

/* Sections Global */
section {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid rgba(255,255,255,0.05);
    padding: 3rem 2rem;
    border-radius: 24px;
    text-align: left;
    transition: transform 0.3s, background 0.3s;
    backdrop-filter: blur(10px);
}

.feature-card:hover {
    transform: translateY(-10px);
    background: rgba(255,255,255,0.08);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.feature-icon-ceramic {
    line-height: 1;
    height: 48px;
    display: flex;
    align-items: center;
}

.feature-icon-ceramic svg {
    display: block;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-secondary);
}

/* Kit Section */
.kit-container {
    display: flex;
    align-items: center;
    gap: 4rem;
    background: var(--card-bg);
    border-radius: 30px;
    padding: 4rem;
    border: 1px solid rgba(255,255,255,0.05);
}

.kit-image {
    flex: 1;
}

.kit-image img {
    width: 100%;
    border-radius: 20px;
}

.kit-info {
    flex: 1;
}

.kit-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.kit-price {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.original-price {
    text-decoration: line-through;
    color: var(--text-secondary);
    font-size: 1.2rem;
    font-weight: 400;
}

.kit-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.kit-list {
    list-style: none;
    margin-bottom: 3rem;
}

.kit-list li {
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
}

.guarantee {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-align: center;
}

/* Tabs */
.tabs-container {
    background: var(--card-bg);
    border-radius: 24px;
    border: 1px solid rgba(255,255,255,0.05);
    overflow: hidden;
}

.tab-buttons {
    display: flex;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.tab-btn {
    flex: 1;
    padding: 1.5rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.tab-btn.active {
    color: var(--text-primary);
    background: rgba(255,255,255,0.05);
    border-bottom: 2px solid var(--accent-pink);
}

.tab-content {
    display: none;
    padding: 4rem;
    text-align: center;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

.tab-content h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.tab-content p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-size: 1.1rem;
}

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

/* FAQ Accordion */
.faq-section {
    max-width: 800px;
}

.accordion-item {
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 1rem;
}

.accordion-header {
    width: 100%;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 500;
    padding: 1.5rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    text-align: left;
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.accordion-content p {
    color: var(--text-secondary);
    padding-bottom: 1.5rem;
}

/* Footer */
footer {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 4rem 2rem;
    text-align: center;
    margin-top: 4rem;
}

.footer-logo {
    height: 18px;
    width: auto;
    margin-bottom: 1rem;
    opacity: 0.7;
}

.footer-content p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--text-primary);
}

.copyright {
    font-size: 0.8rem;
    opacity: 0.5;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero-title { font-size: 2.5rem; }
    .hero-buttons { flex-direction: column; width: 100%; }
    .kit-container { flex-direction: column; padding: 2rem; }
    .tab-buttons { flex-direction: column; }
    .tab-content { padding: 2rem; }
}

/* Specs & Compatibility Section */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.spec-card {
    background: var(--card-bg);
    border: 1px solid rgba(255,255,255,0.05);
    padding: 3rem 2rem;
    border-radius: 24px;
    backdrop-filter: blur(10px);
}

.spec-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--accent-pink);
}

.spec-card p {
    color: var(--text-secondary);
}

.brand-list {
    margin-top: 1rem;
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--text-primary) !important;
}

.full-width {
    grid-column: 1 / -1;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1.5rem;
}

.comparison-table th, .comparison-table td {
    padding: 1.2rem;
    text-align: left;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.comparison-table th {
    color: var(--text-secondary);
    font-weight: 500;
}

.comparison-table td {
    color: var(--text-primary);
}

.comparison-table td:first-child {
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .specs-grid {
        grid-template-columns: 1fr;
    }
}