/* ========================================
   Studio Vizion - Quartr-Inspired Elegant Design
   Clean, Minimal, Sophisticated
   ======================================== */

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

:root {
    /* Colors - Quartr Style */
    --color-black: #000000;
    --color-gray: #E8E8E8;
    --color-text: #FFFFFF;
    --color-text-subtle: rgba(255, 255, 255, 0.65);
    --color-verde: #D6FF91;
    --color-verde-hover: #c4ed7f;

    /* Typography - Not Giant, Just Right */
    --font-family: 'Helvetica Neue', Helvetica, Arial, -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing - Balanced */
    --spacing-section: 6rem;
    --spacing-large: 4rem;
    --spacing-medium: 2rem;
    --spacing-small: 1rem;

    /* Container */
    --container-max: 1400px;
    --container-padding: 2rem;
    --content-max: 640px;

    /* Border Radius - Moderate, Not Excessive */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-black);
    overflow-x: hidden;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ========================================
   Navigation - Floating Liquid Glass (Quartr Style)
   ======================================== */

.nav {
    position: fixed;
    top: 1.25rem;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 4rem);
    max-width: calc(var(--container-max) - 4rem);
    z-index: 1000;
    background: rgba(0, 0, 0, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

.nav .container {
    padding: 0;
    max-width: 100%;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.25rem;
}

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

.nav-logo .logo {
    max-width: 110px;
    height: auto;
    opacity: 1;
    transition: opacity 0.2s ease;
}

.nav-logo:hover .logo {
    opacity: 0.85;
}

/* ========================================
   Typography - Proportional, Not Giant
   ======================================== */

.hero-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 1.25rem;
    background: linear-gradient(
        135deg,
        #FFFFFF 0%,
        #E8E8E8 25%,
        #D6FF91 50%,
        #A78BFA 75%,
        #FFFFFF 100%
    );
    background-size: 200% 200%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 8s ease infinite;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.5))
            drop-shadow(0 0 30px rgba(214, 255, 145, 0.3))
            drop-shadow(0 0 40px rgba(167, 139, 250, 0.2));
    position: relative;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1.25rem;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
    display: inline-block;
    position: relative;
}

.hero-subtitle::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(to right, var(--color-verde), transparent);
    border-radius: 2px;
    box-shadow: 0 0 10px rgba(214, 255, 145, 0.5);
}

.hero-description {
    font-size: 0.9375rem;
    line-height: 1.7;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 2rem;
    max-width: 100%;
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 1rem 1.25rem;
    background: linear-gradient(to right,
        rgba(0, 0, 0, 0.4) 0%,
        rgba(0, 0, 0, 0.2) 100%
    );
    border-radius: 8px;
    border-left: 3px solid rgba(214, 255, 145, 0.8);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.01em;
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-subtle);
    text-align: center;
    margin-bottom: 4rem;
}

/* ========================================
   Buttons - Quartr Style
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

.btn-primary {
    background: var(--color-verde);
    color: var(--color-black);
    font-weight: 600;
}

.btn-primary:hover {
    background: var(--color-verde-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-text);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ========================================
   Hero Section - Full Background
   ======================================== */

.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: flex-end;
    padding: 0;
    background-image: url('img/bg1.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero .container {
    margin: 0 auto;
    padding: 0;
    max-width: calc(var(--container-max) - 4rem);
    width: calc(100% - 4rem);
}

.hero-content {
    max-width: 480px;
    padding: 0 0 100px 1.25rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    opacity: 0.6;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.scroll-indicator:hover {
    opacity: 1;
}

.scroll-indicator span {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
}

.scroll-indicator svg {
    color: rgba(255, 255, 255, 0.7);
    animation: scrollBounce 2s ease-in-out infinite;
}

/* ========================================
   Sections - Generous Whitespace
   ======================================== */

section {
    padding: var(--spacing-section) 0;
}

.divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.06);
    margin: 0 auto;
}

/* ========================================
   Comparison Section - Monaco Split Style
   ======================================== */

.comparison {
    padding: var(--spacing-section) 0;
    background: var(--color-gray);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.comparison .container {
    display: grid;
    grid-template-columns: 40% 60%;
    gap: 6rem;
    align-items: center;
}

.comparison-visual {
    position: relative;
    width: 100%;
    height: 500px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.comparison-visual::before {
    content: 'Visual Placeholder';
    font-size: 0.875rem;
    color: rgba(0, 0, 0, 0.2);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.comparison-content h2 {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: 300;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
    color: var(--color-black);
}

.comparison-content .section-subtitle {
    font-size: 1.125rem;
    color: rgba(0, 0, 0, 0.7);
    text-align: left;
    margin-bottom: 3rem;
    font-weight: 400;
}

.comparison-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.comparison-list li {
    padding: 0 0 0 1.5rem;
    position: relative;
    font-size: 1rem;
    line-height: 1.7;
    color: rgba(0, 0, 0, 0.8);
    border-left: 2px solid rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
}

.comparison-list li:hover {
    border-left-color: #8B5CF6;
    padding-left: 2rem;
}

.comparison-list li strong {
    display: block;
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.375rem;
    color: var(--color-black);
}

.comparison-list li span {
    color: rgba(0, 0, 0, 0.6);
    font-size: 0.9375rem;
}

/* ========================================
   Benefits Section - Card Style
   ======================================== */

.benefits {
    padding: var(--spacing-section) 0;
    background: var(--color-black);
}

.benefits .section-title {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: 300;
    line-height: 1.2;
    letter-spacing: -0.02em;
    text-align: left;
    color: var(--color-text);
    max-width: 800px;
    margin-bottom: 1rem;
}

.benefits .section-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.6);
    text-align: left;
    margin-bottom: 4rem;
    font-weight: 400;
    max-width: 700px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.benefit-card {
    background: rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
}

.benefit-card:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-4px);
}

.benefit-image {
    width: 100%;
    height: 280px;
    background: rgba(255, 255, 255, 0.03);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.benefit-image::before {
    content: 'Preview';
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.2);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.benefit-content {
    padding: 2rem;
}

.benefit-icon {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.benefit-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.625rem;
    line-height: 1.3;
    color: var(--color-text);
}

.benefit-description {
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
    font-size: 0.9375rem;
}

/* ========================================
   About Section - Feature Grid Style
   ======================================== */

.about {
    padding: var(--spacing-section) 0;
    background: var(--color-black);
}

.about-header {
    max-width: 900px;
    margin-bottom: 4rem;
}

.label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.06);
    color: rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    font-size: 0.8125rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    letter-spacing: 0.02em;
}

.label::before {
    content: '✦';
    color: var(--color-verde);
}

.about-title {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: 300;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
    color: var(--color-text);
}

.about-description {
    font-size: 1.125rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 2rem;
    max-width: 700px;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1.5rem;
}

.about-card {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    grid-column: span 2;
}

.about-card:hover {
    background: rgba(255, 255, 255, 0.06);
    transform: translateY(-4px);
}

.about-card.large {
    grid-column: span 3;
}

.about-card.large .about-card-image {
    height: 280px;
}

.about-card-image {
    width: 100%;
    height: 200px;
    background: rgba(255, 255, 255, 0.02);
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-card-image::before {
    content: '◆';
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.1);
}

.about-card-content {
    padding: 1.5rem;
}

.about-card-title {
    font-size: 1.0625rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.about-card-description {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.6);
}

/* ========================================
   Services Section - Quartr Card Style
   ======================================== */

.services {
    padding: var(--spacing-section) 0;
}

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

.service-card {
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: background 0.2s ease;
}

.service-card:hover {
    background: rgba(255, 255, 255, 0.05);
}

.service-image {
    width: 100%;
    height: 320px;
    background: rgba(255, 255, 255, 0.02);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.service-image::before {
    content: 'Screenshot';
    position: absolute;
    font-size: 0.75rem;
    color: var(--color-text-subtle);
    opacity: 0.3;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.service-image img {
    width: 85%;
    height: 85%;
    object-fit: contain;
    opacity: 0.9;
}

.service-content {
    padding: 2rem;
}

.service-icon {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 0.75rem;
}

.service-description {
    color: var(--color-text-subtle);
    line-height: 1.6;
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color 0.2s ease;
}

.service-link:hover {
    color: var(--color-verde);
}

/* ========================================
   Process Section
   ======================================== */

.process {
    padding: var(--spacing-section) 0;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.process-step {
    text-align: center;
    padding: 2rem 1.25rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-lg);
    transition: background 0.2s ease;
}

.process-step:hover {
    background: rgba(214, 255, 145, 0.04);
}

.step-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-verde), #DABFFF);
    color: var(--color-black);
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
}

.step-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.step-description {
    color: var(--color-text-subtle);
    line-height: 1.5;
    font-size: 0.9375rem;
}

/* ========================================
   FAQ Section
   ======================================== */

.faq {
    padding: var(--spacing-section) 0;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.faq-item {
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: background 0.2s ease;
}

.faq-item:hover {
    background: rgba(214, 255, 145, 0.04);
}

.faq-question {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.faq-answer {
    color: var(--color-text-subtle);
    line-height: 1.6;
    font-size: 1rem;
}

/* ========================================
   CTA Section
   ======================================== */

.cta {
    padding: var(--spacing-section) 0;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.cta-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-subtle);
    margin-bottom: 2.5rem;
}

/* ========================================
   Contact Form
   ======================================== */

.contact-form {
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.625rem;
    font-size: 0.9375rem;
}

.form-group input {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-family: var(--font-family);
    transition: all 0.2s ease;
}

.form-group input::placeholder {
    color: var(--color-text-subtle);
}

.form-group input:focus {
    outline: none;
    background: rgba(0, 0, 0, 0.6);
    border-color: var(--color-verde);
}

.form-privacy {
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-text-subtle);
    margin-top: 1.25rem;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    padding: 3rem 0 2.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    max-width: 130px;
    height: auto;
    opacity: 0.85;
}

.footer-tagline {
    color: var(--color-text-subtle);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.footer-copy {
    color: var(--color-text-subtle);
    font-size: 0.875rem;
}

/* ========================================
   Animations - Subtle
   ======================================== */

.animate-in {
    opacity: 0;
    animation: fadeInUp 0.6s ease-out forwards;
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

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

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

@keyframes scrollBounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(8px);
    }
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 1200px) {
    :root {
        --spacing-section: 5rem;
    }

    .about-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .about-card.large {
        grid-column: span 2;
    }

    .services-grid,
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-section: 3.5rem;
        --container-padding: 1.5rem;
    }

    .nav {
        top: 1rem;
        width: calc(100% - 2rem);
        max-width: calc(100% - 2rem);
    }

    .nav-content {
        padding: 0.625rem 1rem;
    }

    .nav-logo .logo {
        max-width: 90px;
    }

    .hero {
        min-height: 100vh;
    }

    .hero-content {
        padding: 0 1.5rem 60px 1.5rem;
    }

    .scroll-indicator {
        opacity: 0.5;
    }

    .scroll-indicator span {
        font-size: 0.6875rem;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .hero-cta .btn {
        width: 100%;
    }

    .comparison .container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .comparison-visual {
        height: 300px;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .benefit-image {
        height: 180px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .about-card,
    .about-card.large {
        grid-column: span 1;
    }

    .about-card-image {
        height: 180px;
    }

    .about-card.large .about-card-image {
        height: 220px;
    }

    .services-grid,
    .process-grid,
    .faq-grid,
    .form-row {
        grid-template-columns: 1fr;
    }

    .service-image {
        height: 240px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
    }

    .comparison-column,
    .benefit-card,
    .service-content,
    .process-step,
    .faq-item,
    .contact-form {
        padding: 1.75rem;
    }
}