/* ============================================
   Liveblocks-Inspired Template — Styles
   Modern dark/light SaaS-style design
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    /* Colors — Dark */
    --color-bg-dark: #0A0A0A;
    --color-bg-dark-subtle: #111111;
    --color-bg-dark-card: #161616;
    --color-bg-dark-border: #222222;

    /* Colors — Light */
    --color-bg-light: #FAFAFA;
    --color-bg-white: #FFFFFF;
    --color-bg-light-card: #F5F5F5;

    /* Colors — Text */
    --color-text-primary: #FFFFFF;
    --color-text-secondary: rgba(255, 255, 255, 0.6);
    --color-text-tertiary: rgba(255, 255, 255, 0.4);
    --color-text-dark: #0A0A0A;
    --color-text-dark-secondary: #555555;
    --color-text-dark-tertiary: #888888;

    /* Colors — Accent */
    --color-accent: #E04EC4;
    --color-accent-light: #F472D0;
    --color-accent-glow: rgba(224, 78, 196, 0.15);

    /* Colors — Borders */
    --color-border-dark: rgba(255, 255, 255, 0.08);
    --color-border-light: rgba(0, 0, 0, 0.08);

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

    /* Spacing */
    --container-max: 1200px;
    --container-padding: 24px;
    --section-padding: 120px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

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

body.menu-open {
    overflow: hidden;
}

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

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

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

/* --- Section Labels --- */
.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: 16px;
}

.section-label-light {
    color: var(--color-accent-light);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 0.9rem;
    font-weight: 500;
    font-family: var(--font-sans);
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    text-decoration: none;
    gap: 8px;
}

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

.btn-primary:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    border-color: rgba(255, 255, 255, 0.25);
    background: rgba(255, 255, 255, 0.05);
}

.btn-outline {
    background: transparent;
    color: var(--color-text-dark);
    border: 1px solid var(--color-border-light);
    border-color: rgba(0, 0, 0, 0.15);
}

.btn-outline:hover {
    border-color: rgba(0, 0, 0, 0.3);
    background: rgba(0, 0, 0, 0.02);
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 0 var(--container-padding);
    transition: all var(--transition-base);
}

.nav-scrolled {
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border-dark);
}

.nav-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.nav-logo-icon {
    width: 22px;
    height: 22px;
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

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

.nav-cta {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: 8px 16px;
    border: 1px solid var(--color-border-dark);
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.nav-cta:hover {
    color: var(--color-text-primary);
    border-color: rgba(255, 255, 255, 0.25);
}

.nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-hamburger span {
    display: block;
    width: 24px;
    height: 1.5px;
    background: var(--color-text-primary);
    transition: all var(--transition-base);
    transform-origin: center;
}

.nav-hamburger.active span:first-child {
    transform: rotate(45deg) translate(2.5px, 2.5px);
}

.nav-hamburger.active span:last-child {
    transform: rotate(-45deg) translate(2.5px, -2.5px);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 99;
    background: var(--color-bg-dark);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

.mobile-menu.active {
    opacity: 1;
    pointer-events: all;
}

.mobile-menu-link {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.mobile-menu-cta {
    color: var(--color-accent);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    padding: 120px var(--container-padding) 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(ellipse at center, var(--color-accent-glow) 0%, transparent 70%);
    opacity: 0.8;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-tertiary);
    margin-bottom: 24px;
    padding: 6px 16px;
    border: 1px solid var(--color-border-dark);
    border-radius: 100px;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 50%, #a78bfa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Typewriter animation */
.typewriter-wrapper {
    display: inline-flex;
    align-items: baseline;
}

.typewriter-text {
    display: inline-block;
    min-width: 1ch;
}

.typewriter-cursor {
    display: inline-block;
    font-weight: 300;
    margin-left: 2px;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 50%, #a78bfa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: blink 0.7s step-end infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.hero-description {
    font-size: 1.15rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    max-width: 560px;
    margin: 0 auto 40px;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

/* --- Trust Bar --- */
.trust-bar {
    padding: 60px 0;
    border-top: 1px solid var(--color-border-dark);
    border-bottom: 1px solid var(--color-border-dark);
}

.trust-label {
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-tertiary);
    text-align: center;
    margin-bottom: 32px;
}

.trust-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.trust-stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.trust-stat-number {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
}

.trust-stat-label {
    font-size: 0.85rem;
    color: var(--color-text-tertiary);
}

/* --- Services Section --- */
.services {
    padding: var(--section-padding) 0;
    background: var(--color-bg-light);
    color: var(--color-text-dark);
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 64px;
}

.services .section-label {
    color: var(--color-accent);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.15;
    margin-bottom: 16px;
    color: var(--color-text-dark);
}

.section-description {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--color-text-dark-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    padding: 32px;
    background: var(--color-bg-white);
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
    transition: all var(--transition-base);
}

.service-card:hover {
    border-color: rgba(0, 0, 0, 0.15);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
    transform: translateY(-2px);
}

.service-icon {
    width: 40px;
    height: 40px;
    margin-bottom: 20px;
    color: var(--color-accent);
}

.service-icon svg {
    width: 100%;
    height: 100%;
}

.service-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--color-text-dark);
}

.service-card p {
    font-size: 0.9rem;
    line-height: 1.65;
    color: var(--color-text-dark-secondary);
}

/* --- Feature Highlight --- */
.feature-highlight {
    padding: var(--section-padding) 0;
    background: var(--color-bg-dark);
    color: var(--color-text-primary);
}

.feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.feature-text h2 {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 20px;
}

.feature-text p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: 28px;
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.feature-list li {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    padding-left: 24px;
    position: relative;
}

.feature-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
}

.feature-visual {
    background: var(--color-bg-dark-card);
    border: 1px solid var(--color-border-dark);
    border-radius: 16px;
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-visual img {
    width: 100%;
    border-radius: 8px;
}

/* --- About Section --- */
.about {
    padding: var(--section-padding) 0;
    background: var(--color-bg-light);
    color: var(--color-text-dark);
}

.about .section-header h2 {
    color: var(--color-text-dark);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    margin-bottom: 80px;
}

.about-lead {
    font-size: 1.3rem;
    font-weight: 500;
    line-height: 1.5;
    color: var(--color-text-dark);
    margin-bottom: 20px;
}

.about-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-dark-secondary);
}

.about-image {
    background: var(--color-bg-light-card);
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

.about-image img {
    width: 80%;
    height: auto;
    max-height: 90%;
    object-fit: contain;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.value-card {
    padding: 32px;
    background: var(--color-bg-white);
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
}

.value-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--color-text-dark);
}

.value-card p {
    font-size: 0.9rem;
    line-height: 1.65;
    color: var(--color-text-dark-secondary);
}

/* --- CTA Section --- */
.cta-section {
    position: relative;
    padding: var(--section-padding) 0;
    background: var(--color-bg-dark);
    text-align: center;
    overflow: hidden;
}

.cta-glow {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(ellipse at center bottom, var(--color-accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

.cta-section h2 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.15;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.cta-description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 480px;
    margin: 0 auto 40px;
    position: relative;
    z-index: 1;
}

.cta-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    position: relative;
    z-index: 1;
}

/* --- Contact Section --- */
.contact {
    padding: var(--section-padding) 0 80px;
    background: var(--color-bg-light);
    color: var(--color-text-dark);
}

.contact .section-header h2 {
    color: var(--color-text-dark);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 48px;
}

.contact-card {
    padding: 40px;
    background: var(--color-bg-white);
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
}

.contact-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--color-text-dark);
}

.contact-card p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-text-dark-secondary);
    margin-bottom: 24px;
}

.contact-details {
    display: flex;
    gap: 48px;
    justify-content: center;
    padding-top: 32px;
    border-top: 1px solid var(--color-border-light);
}

.contact-detail {
    display: flex;
    flex-direction: column;
    gap: 4px;
    text-align: center;
}

.contact-detail-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-dark-tertiary);
}

.contact-detail span:last-child {
    font-size: 0.95rem;
    color: var(--color-text-dark-secondary);
}

/* --- Footer --- */
.footer {
    background: var(--color-bg-dark-subtle);
    padding: 80px 0 40px;
    color: var(--color-text-secondary);
    border-top: 1px solid var(--color-border-dark);
}

.footer-top {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 80px;
    margin-bottom: 64px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.footer-logo-icon {
    width: 20px;
    height: 20px;
    color: var(--color-accent);
}

.footer-columns {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
}

.footer-col h4 {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-primary);
    margin-bottom: 16px;
}

.footer-col a,
.footer-col span {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    padding: 4px 0;
    transition: color var(--transition-fast);
}

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

.footer-address {
    line-height: 1.5;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid var(--color-border-dark);
    font-size: 0.8rem;
    color: var(--color-text-tertiary);
}

.footer-bottom-links {
    display: flex;
    gap: 24px;
}

/* ============================================
   Responsive Breakpoints
   ============================================ */

/* Tablet: ≤ 1024px */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }

    .hero h1 {
        font-size: 3rem;
    }

    .hero-description {
        font-size: 1.05rem;
    }

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

    .feature-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .feature-visual {
        order: -1;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-image {
        order: -1;
        max-height: 360px;
    }

    .values-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .cta-section h2 {
        font-size: 2.5rem;
    }
}

/* Mobile: ≤ 768px */
@media (max-width: 768px) {
    :root {
        --section-padding: 64px;
        --container-padding: 20px;
    }

    .nav-links,
    .nav-actions {
        display: none;
    }

    .nav-hamburger {
        display: flex;
    }

    .mobile-menu {
        display: flex;
    }

    .hero {
        min-height: auto;
        padding: 140px var(--container-padding) 60px;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .hero-description {
        font-size: 0.95rem;
    }

    .hero-actions {
        flex-direction: column;
        gap: 12px;
    }

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

    .trust-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .trust-stat-number {
        font-size: 1.5rem;
    }

    .trust-stat-label {
        font-size: 0.75rem;
    }

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

    .section-header h2 {
        font-size: 2rem;
    }

    .feature-text h2 {
        font-size: 1.75rem;
    }

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

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

    .contact-details {
        flex-direction: column;
        align-items: center;
        gap: 24px;
    }

    .cta-section h2 {
        font-size: 2rem;
    }

    .cta-actions {
        flex-direction: column;
        gap: 12px;
    }

    .cta-actions .btn {
        width: 100%;
        max-width: 320px;
    }

    .footer-columns {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

/* Small mobile: ≤ 480px */
@media (max-width: 480px) {
    :root {
        --section-padding: 48px;
    }

    .hero h1 {
        font-size: 1.85rem;
    }

    .section-header h2 {
        font-size: 1.65rem;
    }

    .feature-text h2 {
        font-size: 1.5rem;
    }

    .trust-stat-number {
        font-size: 1.5rem;
    }

    .cta-section h2 {
        font-size: 1.65rem;
    }

    .about-lead {
        font-size: 1.1rem;
    }

    .service-card {
        padding: 24px;
    }

    .contact-card {
        padding: 28px;
    }
}