:root {
    /* Premium Color Palette - Deep Space & Electric */
    --color-bg: #020617;
    --color-bg-soft: #0f172a;
    --color-bg-card: rgba(15, 23, 42, 0.6);
    --color-bg-card-hover: rgba(30, 41, 59, 0.7);

    /* Refined Primary Colors */
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-primary-light: #60a5fa;
    --color-primary-glow: rgba(59, 130, 246, 0.5);

    /* Secondary & Accents */
    --color-secondary: #8b5cf6;
    --color-accent: #d946ef;
    --color-success: #10b981;
    --color-warning: #f59e0b;

    /* Text Colors */
    --color-text: #f8fafc;
    --color-text-muted: #94a3b8;
    --color-text-dark: #0f172a;

    /* Borders */
    --color-border: rgba(255, 255, 255, 0.06);
    --color-border-hover: rgba(255, 255, 255, 0.12);
    --color-border-active: rgba(59, 130, 246, 0.4);

    /* Premium Gradients */
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --gradient-text: linear-gradient(135deg, #60a5fa 0%, #c084fc 50%, #f472b6 100%);
    --gradient-surface: linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.0) 100%);
    --gradient-glow: radial-gradient(circle at center, var(--color-primary-glow) 0%, transparent 70%);

    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Spacing & Layout */
    --container-width: 1280px;
    --header-height: 80px;
    --radius-sm: 8px;
    --radius: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;

    /* Effects */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px var(--color-primary-glow);
    --backdrop-blur: blur(12px);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* Sophisticated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background:
        radial-gradient(circle at 15% 50%, rgba(59, 130, 246, 0.08), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.08), transparent 25%);
    z-index: -1;
    pointer-events: none;
}

/* Noise Texture for Texture */
body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: -1;
    opacity: 0.4;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text);
    border-color: var(--color-border);
    backdrop-filter: var(--backdrop-blur);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-text);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(2, 6, 23, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text);
    display: flex;
    align-items: center;
}

.logo span.tm {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-left: 4px;
    transform: translateY(-4px);
}

.nav-list {
    display: flex;
    gap: 32px;
}

.nav-list a {
    font-weight: 500;
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

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

.header-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--color-text);
    cursor: pointer;
}

.mobile-only {
    display: none;
}

/* Hero Section */
.hero {
    padding-top: calc(var(--header-height) + 80px);
    padding-bottom: 100px;
    position: relative;
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 64px;
    align-items: center;
}

.hero-title {
    font-size: 4.5rem;
    margin-bottom: 24px;
    line-height: 1.1;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.text-gradient {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: 40px;
    max-width: 600px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    perspective: 1000px;
}

.hero-image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    padding: 8px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 100%);
    box-shadow: var(--shadow-2xl), 0 0 40px rgba(59, 130, 246, 0.2);
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform 0.5s ease;
}

.hero-image-wrapper:hover {
    transform: rotateY(0deg) rotateX(0deg);
}

.hero-image {
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    background: var(--color-bg-soft);
}

/* Section Titles */
.section {
    padding: 100px 0;
}

.section-title {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 16px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 80px;
    font-size: 1.125rem;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--color-bg-card);
    backdrop-filter: var(--backdrop-blur);
    padding: 40px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-hover);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    margin-bottom: 24px;
    font-size: 24px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--color-text);
}

.feature-card p {
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* Carousel */
.carousel-container {
    position: relative;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    aspect-ratio: 16/9;
    border: 1px solid var(--color-border);
}

.carousel-track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    height: 100%;
}

.carousel-slide {
    min-width: 100%;
    height: 100%;
    position: relative;
}

.slide-content {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
}

.slide-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 80px 60px;
    background: linear-gradient(to top, rgba(2, 6, 23, 0.95) 0%, rgba(2, 6, 23, 0.6) 50%, transparent 100%);
    color: white;
}

.slide-overlay h4 {
    color: var(--color-primary-light);
    font-size: 0.875rem;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.slide-overlay h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.slide-overlay p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 700px;
    line-height: 1.6;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 10;
}

.carousel-btn:hover {
    background: white;
    color: var(--color-bg);
    transform: translateY(-50%) scale(1.1);
}

.carousel-btn.prev {
    left: 24px;
}

.carousel-btn.next {
    right: 24px;
}

.carousel-dots {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: white;
    transform: scale(1.5);
}

/* Pricing */
.pricing-toggle-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 64px;
}

.toggle-label {
    font-weight: 500;
    color: var(--color-text);
}

.badge {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    margin-left: 8px;
    font-weight: 600;
}

.switch {
    position: relative;
    display: inline-block;
    width: 52px;
    height: 28px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.1);
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked+.slider {
    background-color: var(--color-primary);
}

input:checked+.slider:before {
    transform: translateX(24px);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    align-items: start;
}

.pricing-card {
    background: var(--color-bg-card);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px 24px;
    position: relative;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.pricing-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-border-hover);
}

.pricing-card.popular {
    background: linear-gradient(180deg, rgba(59, 130, 246, 0.1) 0%, rgba(15, 23, 42, 0.6) 100%);
    border-color: rgba(59, 130, 246, 0.5);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.15);
    transform: scale(1.05);
    z-index: 1;
}

.pricing-card.popular:hover {
    transform: scale(1.05) translateY(-8px);
}

.popular-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: white;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-header {
    text-align: center;
    margin-bottom: 32px;
}

.pricing-header h3 {
    font-size: 1.25rem;
    margin-bottom: 16px;
    font-weight: 600;
}

.price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text);
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.currency {
    font-size: 1.25rem;
}

.period {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-weight: 400;
}

.pricing-features {
    margin-bottom: 32px;
    flex-grow: 1;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.pricing-features li i {
    color: var(--color-primary);
    width: 18px;
    height: 18px;
}

.pricing-features li.disabled {
    opacity: 0.5;
}

/* FAQ */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: var(--color-bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
    overflow: hidden;
}

.faq-item:hover {
    border-color: var(--color-border-hover);
}

.faq-question {
    width: 100%;
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    font-family: var(--font-main);
}

.faq-question i {
    transition: transform 0.3s ease;
    color: var(--color-text-muted);
}

.faq-question.active i {
    transform: rotate(180deg);
    color: var(--color-primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0 24px;
}

.faq-question.active+.faq-answer {
    padding-bottom: 24px;
}

.faq-answer p {
    color: var(--color-text-muted);
    line-height: 1.6;
    margin: 0;
}

/* Footer */
.footer {
    background: var(--color-bg-soft);
    padding: 80px 0 40px;
    border-top: 1px solid var(--color-border);
    margin-top: 120px;
}

.footer-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    margin-bottom: 64px;
}

.footer-col p {
    color: var(--color-text-muted);
    margin-top: 16px;
    max-width: 300px;
}

.footer-col h4 {
    font-size: 1.1rem;
    margin-bottom: 24px;
    font-weight: 600;
    color: var(--color-text);
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col a {
    color: var(--color-text-muted);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-title {
        font-size: 3.5rem;
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 0 16px;
    }

    /* 1. Hide the desktop buttons to fix the overflow */
    .header-actions {
        display: none;
    }

    /* 2. Show the "mobile-only" links inside the hamburger menu */
    .mobile-only {
        display: block;
        margin-top: 12px; /* Optional: adds a little space before the buttons */
    }

    /* 3. Style the "Login/Register" links inside the mobile menu to look like buttons */
    .mobile-only a {
        display: block;
        width: 100%;
        padding: 12px;
        text-align: center;
        background: rgba(255, 255, 255, 0.05);
        border-radius: var(--radius-full);
        margin-bottom: 8px;
    }

    .nav-list {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: var(--color-bg-soft);
        flex-direction: column;
        padding: 24px;
        gap: 24px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-xl);
    }

    .nav.active .nav-list {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }

    /* Keep the rest of your existing mobile styles below */
    .hero {
        padding-top: calc(var(--header-height) + 40px);
        padding-bottom: 60px;
    }
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 48px;
    }

    .hero-title {
        font-size: 2.5rem;
        margin: 0 auto 24px;
    }

    .hero-subtitle {
        margin: 0 auto 32px;
        font-size: 1.1rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .section-title {
        font-size: 2rem;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .pricing-card {
        padding: 24px;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .footer-col p {
        margin: 16px auto 0;
    }

    .carousel-container {
        aspect-ratio: 3/4;
    }

    .slide-overlay {
        padding: 40px 24px;
        background: linear-gradient(to top, rgba(2, 6, 23, 0.98) 0%, rgba(2, 6, 23, 0.8) 60%, transparent 100%);
    }

    .slide-overlay h2 {
        font-size: 1.5rem;
        margin-bottom: 12px;
    }

    .slide-overlay p {
        font-size: 1rem;
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
    }

    .carousel-btn.prev {
        left: 12px;
    }

    .carousel-btn.next {
        right: 12px;
    }
}

/* Animations */
.section,
.feature-card,
.pricing-card {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* Button Glow Effect */
.btn {
    --mouse-x: 50%;
    --mouse-y: 50%;
}

.btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at var(--mouse-x) var(--mouse-y), rgba(255, 255, 255, 0.2), transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    mix-blend-mode: overlay;
}

.btn:hover::after {
    opacity: 1;
}