@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Outfit:wght@200;300;400;500;600;700;800&display=swap');

:root {
    --bg-color: #050505;
    --text-color: #ffffff;
    --text-secondary: #86868b;
    --accent-blue: rgba(0, 102, 204, 0.9); 
    --accent-blue-glow: rgba(0, 102, 204, 0.3);
    --border-color: #222225;
    --nav-bg: rgba(5, 5, 5, 0.75);
    --hover-bg: #121214;
    --card-bg: #0d0d0f;
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition-premium: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Mode Override (if user preferences set it, but keep it dark-centric for Apple premium vibe) */
@media (prefers-color-scheme: light) {
    :root {
        --bg-color: #fafafa;
        --text-color: #1d1d1f;
        --text-secondary: #6e6e73;
        --border-color: #e2e2e7;
        --nav-bg: rgba(250, 250, 250, 0.75);
        --hover-bg: #f5f5f7;
        --card-bg: #ffffff;
    }
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-premium);
}

/* --- Scroll Animations --- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1), transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px;
    background-color: rgba(255, 255, 255, 0.9); /* Header beyaz yap */
    backdrop-filter: saturate(180%) blur(25px);
    -webkit-backdrop-filter: saturate(180%) blur(25px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 8%;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    transition: var(--transition-premium);
}

.nav-brand {
    display: flex;
    align-items: center;
}

.nav-logo {
    height: 30px;
    width: auto;
    display: block;
    transition: var(--transition-premium);
}

.nav-logo:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    font-size: 0.85rem;
    font-weight: 600;
    color: #515154; /* Dark gray for high contrast on white header */
    letter-spacing: -0.01em;
}

.nav-links a:hover,
.nav-links a.active {
    color: #000000; /* Pure black on hover/active */
}

/* Mobile Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 20px;
    height: 14px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
    padding: 0;
}

.mobile-menu-toggle span {
    width: 100%;
    height: 2px;
    background-color: #000000;
    transition: var(--transition-premium);
    transform-origin: left center;
}


/* --- Hero Section --- */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 80px 2rem 40px;
    position: relative;
    overflow: hidden;
}

/* Dynamic subtle background glow */
.hero::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 300px;
    background: radial-gradient(circle, var(--accent-blue-glow) 0%, rgba(0,0,0,0) 70%);
    z-index: 0;
    pointer-events: none;
    filter: blur(80px);
    opacity: 0.8;
}

.tech-badge {
    position: relative;
    z-index: 1;
    padding: 0.6rem 1.2rem;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 2.5rem;
    color: var(--text-secondary);
    background-color: var(--card-bg);
}

.hero-headline {
    position: relative;
    z-index: 1;
    font-family: var(--font-heading);
    font-size: 5rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
    max-width: 1000px;
    line-height: 1.05;
    background: linear-gradient(180deg, var(--text-color) 30%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subheadline {
    position: relative;
    z-index: 1;
    font-size: 1.35rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 3.5rem;
    max-width: 700px;
    line-height: 1.6;
}

.cta-group {
    position: relative;
    z-index: 1;
    display: flex;
    gap: 1.2rem;
}

.btn {
    padding: 1.1rem 2.2rem;
    border-radius: 980px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-premium);
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--text-color);
    color: var(--bg-color);
}

.btn-primary:hover {
    transform: scale(1.03);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.1);
}

@media (prefers-color-scheme: light) {
    .btn-primary:hover {
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    }
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--hover-bg);
    border-color: var(--text-color);
}

/* --- Problem vs Solution Section --- */
.problem-solution {
    padding: 120px 8%;
    background-color: var(--bg-color);
    border-top: 1px solid var(--border-color);
}

.ps-container {
    display: flex;
    align-items: stretch;
    justify-content: center;
    max-width: 1100px;
    margin: 0 auto;
    gap: 3rem;
}

.ps-card {
    flex: 1;
    padding: 4rem 3rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 28px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: var(--transition-premium);
}

.ps-card:hover {
    border-color: var(--text-secondary);
}

.ps-icon {
    font-size: 2.2rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--hover-bg);
}

.ps-card.chaos .ps-icon {
    color: #ff453a;
    border: 1px solid rgba(255, 69, 58, 0.2);
}

.ps-card.clarity .ps-icon {
    color: #30d158;
    border: 1px solid rgba(48, 209, 88, 0.2);
    box-shadow: 0 0 20px rgba(48, 209, 88, 0.15);
}

.ps-card h3 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.ps-card p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.6;
    margin-bottom: 2.5rem;
    flex-grow: 1;
}

.tool-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    justify-content: center;
}

.tool-tags span {
    padding: 0.4rem 1rem;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 500;
    background-color: var(--hover-bg);
    border: 1px solid var(--border-color);
}

.tool-tags span.virello-tag {
    background: linear-gradient(135deg, #0066cc 0%, #004499 100%);
    color: #ffffff;
    border: none;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
}

.ps-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

/* --- Split Section --- */
.split-section {
    display: flex;
    min-height: 85vh;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.split-left {
    flex: 1.1;
    position: relative;
    background-image: url('https://images.unsplash.com/photo-1551434678-e076c223a692?ixlib=rb-4.0.3&auto=format&fit=crop&w=1400&q=80');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem;
}

.split-left-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--accent-blue);
    z-index: 1;
}

.split-left-content {
    position: relative;
    z-index: 2;
    color: #ffffff;
    text-align: center;
}

.split-heading {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.split-subheading {
    font-size: 1.35rem;
    font-weight: 400;
    opacity: 0.95;
    max-width: 450px;
    margin: 0 auto;
    line-height: 1.6;
}

.split-right {
    flex: 0.9;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 6rem 8%;
    background-color: var(--bg-color);
}

.interactive-list {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.interactive-item {
    padding: 2.2rem;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background-color: var(--card-bg);
    cursor: pointer;
    transition: var(--transition-premium);
    position: relative;
}

.interactive-item h3 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
    color: var(--text-secondary);
    transition: var(--transition-premium);
}

.interactive-item p {
    font-size: 1rem;
    color: var(--text-secondary);
    display: none;
    line-height: 1.5;
}

.interactive-item:hover {
    transform: translateY(-3px);
    border-color: var(--text-secondary);
}

.interactive-item.active {
    border-color: var(--text-color);
    background-color: var(--hover-bg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

.interactive-item.active h3 {
    color: var(--text-color);
}

.interactive-item.active p {
    display: block;
    animation: fadeIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Pricing Section --- */
.pricing-section {
    padding: 140px 8%;
    text-align: center;
    background-color: var(--bg-color);
}

.pricing-header {
    max-width: 700px;
    margin: 0 auto 5rem;
}

.pricing-header h2 {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}

.pricing-header p {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.pricing-cards {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 0 auto;
}

.price-card {
    flex: 1;
    min-width: 320px;
    max-width: 380px;
    padding: 4rem 3rem;
    border: 1px solid var(--border-color);
    border-radius: 28px;
    background-color: var(--card-bg);
    display: flex;
    flex-direction: column;
    text-align: left;
    transition: var(--transition-premium);
    position: relative;
}

.price-card.featured {
    border-color: var(--text-color);
    box-shadow: 0 15px 50px rgba(0, 102, 204, 0.1);
}

.price-card:hover {
    transform: translateY(-5px);
    border-color: var(--text-secondary);
}

.price-card.featured:hover {
    border-color: var(--text-color);
    box-shadow: 0 20px 60px rgba(0, 102, 204, 0.18);
}

.price-card h3 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    letter-spacing: -0.02em;
}

.price-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 2rem;
    line-height: 1.5;
}

.price {
    font-family: var(--font-heading);
    font-size: 3.8rem;
    font-weight: 800;
    margin-bottom: 2.5rem;
    letter-spacing: -0.03em;
    display: flex;
    align-items: baseline;
}

.price span {
    font-family: var(--font-body);
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-left: 4px;
}

.price-card ul {
    list-style: none;
    margin-bottom: 3.5rem;
    flex-grow: 1;
}

.price-card ul li {
    margin-bottom: 1.2rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    display: flex;
    align-items: center;
}

.price-card ul li::before {
    content: '→';
    color: var(--text-color);
    font-weight: 700;
    margin-right: 12px;
}

/* --- Standard Page Layout --- */
.page-header {
    padding: 160px 8% 80px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.page-header::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.page-header h1 {
    font-family: var(--font-heading);
    font-size: 4.5rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    background: linear-gradient(180deg, var(--text-color) 40%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.page-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 80px 8%;
}

.page-section {
    margin-bottom: 5rem;
}

.page-section h2 {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.page-section p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.8rem;
}

/* FAQ Accordion Styling */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    background-color: var(--card-bg);
}

.faq-item h3 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    letter-spacing: -0.01em;
}

.faq-item p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.6;
}

/* --- Contact Page Grid --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
}

.contact-info-cards {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-card {
    padding: 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background-color: var(--card-bg);
    transition: var(--transition-premium);
}

.contact-card:hover {
    border-color: var(--text-secondary);
}

.contact-card h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.contact-card a {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--text-color);
}

.contact-card a:hover {
    color: var(--accent-blue);
}

/* --- Footer --- */
.footer {
    padding: 6rem 8% 4rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2.5rem;
    margin-bottom: 3rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

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

.footer-copy {
    color: var(--text-secondary);
    font-size: 0.8rem;
    letter-spacing: 0.02em;
}

/* --- Responsive Layouts --- */
@media (max-width: 1024px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 900px) {
    .ps-container {
        flex-direction: column;
        gap: 2rem;
    }
    .ps-divider {
        transform: rotate(90deg);
        margin: 1rem 0;
    }
    .hero-headline {
        font-size: 3.8rem;
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-links {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: #ffffff; /* White mobile menu matching header */
        padding: 3rem 8%;
        gap: 2rem;
        transform: translateY(-100%);
        opacity: 0;
        transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease;
        z-index: 999;
        pointer-events: none;
        border-top: 1px solid rgba(0, 0, 0, 0.05);
    }
    
    .navbar.mobile-active .nav-links {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }
    
    /* Hamburger animation to X */
    .navbar.mobile-active .mobile-menu-toggle span:nth-child(1) {
        transform: rotate(45deg) translate(1px, -1px);
    }
    .navbar.mobile-active .mobile-menu-toggle span:nth-child(2) {
        opacity: 0;
        transform: scale(0);
    }
    .navbar.mobile-active .mobile-menu-toggle span:nth-child(3) {
        transform: rotate(-45deg) translate(1px, 1px);
    }

    .hero {
        padding-top: 120px;
    }
    .hero-headline {
        font-size: 2.8rem;
    }
    .hero-subheadline {
        font-size: 1.1rem;
    }
    .cta-group {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
    }
    .btn {
        width: 100%;
        justify-content: center;
    }
    .split-section {
        flex-direction: column;
    }
    .split-left {
        min-height: 350px;
        padding: 3rem 1.5rem;
    }
    .split-heading {
        font-size: 2.6rem;
    }
    .split-right {
        padding: 4rem 5%;
    }
    .pricing-header h2 {
        font-size: 2.6rem;
    }
    .page-header h1 {
        font-size: 3rem;
    }
}