:root {
    --bg-color: #0b0f19;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --primary: #00f2fe;
    --primary-glow: rgba(0, 242, 254, 0.5);
    --secondary: #4facfe;
    --glass-bg: rgba(15, 23, 42, 0.6);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-highlight: rgba(255, 255, 255, 0.05);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Glassmorphism Background Shapes */
.bg-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    opacity: 0.5;
    animation: float 20s infinite ease-in-out alternate;
}

.shape-1 {
    width: 500px;
    height: 500px;
    background: rgba(0, 242, 254, 0.2);
    top: -100px;
    left: -100px;
}

.shape-2 {
    width: 600px;
    height: 600px;
    background: rgba(79, 172, 254, 0.15);
    bottom: 20%;
    right: -200px;
    animation-delay: -5s;
}

.shape-3 {
    width: 400px;
    height: 400px;
    background: rgba(139, 92, 246, 0.2);
    top: 40%;
    left: 20%;
    animation-delay: -10s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 50px) scale(1.1); }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Glass UI Elements */
.glass-nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(11, 15, 25, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 100;
    transition: all 0.3s ease;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-color);
    text-decoration: none;
}

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

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover,
.footer-links a:hover,
.footer-bottom .legal a:hover,
.social-links a:hover {
    color: var(--primary) !important;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-highlight), transparent);
}

/* Typography Utilities */
.gradient-text {
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h1 {
    font-size: 4rem;
    line-height: 1.1;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 3rem;
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    margin-bottom: 2.5rem;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    margin-bottom: 1.5rem;
}

.badge-pro {
    background: rgba(0, 242, 254, 0.1);
    border-color: rgba(0, 242, 254, 0.3);
    color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    border: none;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--primary-glow);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-color);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.cta-group {
    display: flex;
    gap: 1rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.main-app-mockup {
    padding: 0;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: transform 0.5s ease;
}

.main-app-mockup:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.mockup-header {
    background: rgba(255,255,255,0.02);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.dots {
    position: absolute;
    left: 1rem;
    display: flex;
    gap: 8px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.dot.close { background: #ff5f56; }
.dot.min { background: #ffbd2e; }
.dot.max { background: #27c93f; }

.mockup-header .title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
}

.mockup-body {
    padding: 3rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.caller-info {
    text-align: center;
}

.avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--glass-bg), rgba(255,255,255,0.05));
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: var(--primary);
}

.caller-name {
    font-size: 1.5rem;
    font-weight: 600;
}

.caller-status {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.call-actions {
    display: flex;
    gap: 2rem;
}

.action-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: white;
    transition: transform 0.2s ease;
}

.action-btn:hover {
    transform: scale(1.1);
}

.action-btn.decline {
    background: #ff5f56;
    box-shadow: 0 4px 15px rgba(255, 95, 86, 0.3);
}

.action-btn.accept {
    background: #27c93f;
    box-shadow: 0 4px 15px rgba(39, 201, 63, 0.3);
}

/* Features */
.features {
    padding: 8rem 0;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
}

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

/* Pro Section */
.pro-section {
    padding: 8rem 0;
    position: relative;
}

.pro-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.pro-features {
    list-style: none;
    margin: 2rem 0;
}

.pro-features li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.pricing-card {
    padding: 3rem;
    text-align: center;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.4));
    border: 1px solid rgba(0, 242, 254, 0.2);
}

.pricing-header h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.price {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 1rem;
    color: var(--primary);
}

.price span:first-child {
    font-size: 2rem;
    vertical-align: super;
}

.price .period {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 500;
}

.pricing-options {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
}

.pricing-divider {
    height: 1px;
    background: var(--glass-border);
    margin: 0.5rem 0;
}

.pricing-option .price {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.pricing-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Content Sections (FAQ, Privacy, Providers) */
.content-section {
    padding: 6rem 0;
}

.accordion {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

details {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

summary {
    padding: 1.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

summary::-webkit-details-marker {
    display: none;
}

summary::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary);
    transition: transform 0.3s ease;
}

details[open] summary::after {
    transform: rotate(45deg);
}

.details-content {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-muted);
}

.details-content a {
    color: var(--primary);
    text-decoration: none;
}

.details-content a:hover {
    text-decoration: underline;
}

.details-content pre {
    background: rgba(0,0,0,0.3);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1rem 0;
}

.details-content code {
    font-family: monospace;
    background: rgba(0,0,0,0.3);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
}

.privacy-card {
    max-width: 800px;
    margin: 0 auto;
    text-align: left;
}

.privacy-card h3 {
    margin-top: 2rem;
    color: #fff;
}

.privacy-card p {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.cards-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.page-item-card {
    padding: 2rem;
    text-align: left;
    margin-bottom: 2rem;
}

.card-title {
    margin-bottom: 0.75rem;
    color: var(--primary);
    font-size: 1.25rem;
}

/* Footer */
.glass-footer {
    border-top: 1px solid var(--glass-border);
    padding: 4rem 0 2rem;
    background: rgba(11, 15, 25, 0.5);
    backdrop-filter: blur(10px);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--text-muted);
}

.footer-brand a {
    color: var(--primary);
    text-decoration: none;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.link-group h4 {
    font-size: 1rem;
    margin-bottom: 1.5rem;
    color: #fff;
}

.link-group a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    margin-bottom: 0.75rem;
    transition: color 0.2s ease;
}

.link-group a:hover {
    color: var(--primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.legal {
    display: flex;
    gap: 1.5rem;
}

.legal a {
    color: var(--text-muted);
    text-decoration: none;
}

.legal a:hover {
    color: #fff;
}

/* Animations */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 992px) {
    h1 { font-size: 3rem; }
    h2 { font-size: 2.5rem; }
    .hero-container, .pro-container, .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .main-app-mockup { margin-top: 2rem; }
    .cta-group { justify-content: center; }
    .pro-features li { justify-content: center; }
}

@media (max-width: 768px) {
    .feature-grid { grid-template-columns: 1fr; }
    .nav-links { display: none; }
    .footer-links { grid-template-columns: 1fr; text-align: center; }
}