:root {
    --color-bg: #090909;
    --color-primary: #5200ff;
    --color-primary-dark: #3a00b8;
    --color-primary-light: #6d28d9;
    --color-primary-glow: rgba(82, 0, 255, 0.2);
    --color-surface: #111111;
    --color-surface-light: #1a1a1a;
    --color-surface-dark: #050505;
    --color-border: #222222;
    --color-border-light: #333333;
    --color-text: #ffffff;
    --color-text-secondary: #a0a0a0;
    --color-text-tertiary: #666666;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --shadow-glow: 0 0 40px var(--color-primary-glow);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}
.container {
    align-content: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    width: 90%;
    height: 100vh;
}
.container-hero {
    align-items: center;
    justify-content: center;
    align-content: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    width: 90%;
    height: 100vh;
}
.container-nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    width: 90%;
}
.container-footer {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    width: 90%;
}
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 200;
    line-height: 1.2;
}

/* ===== BUTTONS (Galilei style) ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 1.5rem;
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 0.875rem;
    text-decoration: none;
    cursor: pointer;
    border: 0;
    transition: 0.3s;
}
.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text);
}
.btn-primary:hover {
    background-color: transparent;
    border-top: 3px solid var(--color-primary);
    border-right: 3px solid var(--color-primary);
    border-bottom: 0;
    border-left: 0;
}
.btn-outline {
    background-color: transparent;
    border: 1px solid var(--color-border-light);
    color: var(--color-text);
}
.btn-outline:hover {
    border-top: 3px solid var(--color-primary);
    border-right: 3px solid var(--color-primary);
    border-bottom: 0;
    border-left: 0;
}
.btn-large { padding: 1rem 2rem; font-size: 1rem; }
.btn-center { margin: 0 auto; display: flex; justify-content: center; max-width: 300px; }

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(29, 29, 29, 0.658);
    backdrop-filter: blur(7px);
    border-bottom: 1px solid var(--color-border);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

.logo-img {
    height: 22px;
    width: auto;
    filter: brightness(0) invert(1);
}

.nav-cta {
    padding: 0.5rem 1rem;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-normal);
    background-color: var(--color-primary);
    color: var(--color-text);
    border: 0;
}

.nav-cta:hover {
    border-top: 3px solid var(--color-primary);
    border-right: 3px solid var(--color-primary);
    background-color: transparent;
}
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}
.dropdown-hover {
    position: relative;
    display: inline-block;;
}
.dropdown-button {
    position: relative;
    display:inline-flex;
    align-items: center;
    width: 100px;
    background-color: transparent;
    padding: 0.4rem;
    border: 1px solid var(--color-text-secondary);
    cursor: pointer;
    color: var(--color-text);
}
.svg-region {
    padding-right: 0.5rem;
    padding-left: 0.2rem;
    width: 2rem;
    height: auto;
}
.dropdown-content {
    display:none;
    position:absolute;
    background-color:var(--color-surface);
    min-width:160px;
    box-shadow:0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index:1;
}
.dropdown-content .bar-item {
    color:var(--color-text);
    padding:12px 16px;
    text-decoration:none;
    display:block;
}
.dropdown-content .bar-item:hover {
    background-color:var(--color-border);
}
.dropdown-hover:hover .dropdown-content {
    display:block
}

/* ===== HERO (MOSAIQ) ===== */
.hero-mosaiq {
    position: relative;
    overflow: hidden;
    min-height: 80vh;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--color-primary);
    background: var(--color-bg);
}
.hero-mosaiq .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}
.hero-mosaiq h1 {
    font-size: 4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
}
.hero-mosaiq h1 .highlight {
    background: var(--color-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-mosaiq .subtitle {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    max-width: 500px;
    margin-bottom: var(--spacing-lg);
}
.hero-actions { display: flex; gap: var(--spacing-md); flex-wrap: wrap; }
.hero-visual {
    background: var(--color-surface-light);
    padding: 2rem;
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.hero-visual .vault-icon {
    font-size: 2.5rem;
    color: var(--color-primary);
}
.hero-visual .vault-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}
.hero-visual .vault-features span {
    background: rgba(82,0,255,0.12);
    padding: 0.3rem 1rem;
    font-size: 0.8rem;
    border: 1px solid rgba(82,0,255,0.2);
}

/* ===== SECTION HEADER ===== */
section {
    align-content: center;
}
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}
.section-title {
    font-size: 2.8rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}
.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== PRINCIPLES / CORE ===== */
.principles {
    padding: 5rem 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}
.principles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}
.principle-card {
    background: var(--color-surface-light);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
    text-align: center;
}
.principle-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}
.principle-card .icon {
    font-size: 2.2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}
.principle-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}
.principle-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* ===== HOW IT WORKS ===== */
.how-it-works {
    padding: 5rem 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}
.how-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}
.how-card {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}
.how-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-3px);
}
.how-card .step-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-border-light);
    margin-bottom: var(--spacing-xs);
}
.how-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}
.how-card p, .how-card li {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    list-style: none;
    padding-left: 0;
}
.how-card li {
    padding: 0.2rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.how-card li i {
    color: var(--color-primary);
    width: 1.2rem;
}

/* ===== USE CASES ===== */
.use-cases {
    padding: 5rem 0;
    background-color: var(--color-surface-dark);
    border-bottom: 1px solid var(--color-border);
}
.cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}
.case-card {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}
.case-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-3px);
}
.case-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}
.case-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}
.case-card .tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: var(--spacing-sm);
}
.case-card .tags span {
    background: rgba(82,0,255,0.1);
    padding: 0.2rem 0.8rem;
    font-size: 0.7rem;
    border: 1px solid rgba(82,0,255,0.15);
}

/* ===== CALL TO ACTION ===== */
.cta-section {
    padding: 5rem 0;
    background: var(--color-surface-dark);
    border-top: 1px solid var(--color-primary);
    text-align: center;
}
.cta-section h2 {
    font-size: 2.8rem;
    margin-bottom: var(--spacing-sm);
}
.cta-section p {
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}
.cta-actions { display: flex; justify-content: center; gap: var(--spacing-md); flex-wrap: wrap; }

/* ===== FOOTER ===== */
.footer {
    padding: 3rem 0 2rem;
    background-color: var(--color-surface-dark);
    border-top: 1px solid var(--color-border);
}

.footer-brand {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
    width: 100%;
    align-items: center;
    justify-content: center;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-logo {
    height: 48px;
    width: auto;
    filter: brightness(0) invert(1);
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
}

.brand-image {
    height: 1.8em;
    width: auto;
    display: flex;
    justify-content: center;
    pointer-events: none;
}

.footer-info {
    display: flex;
    flex-direction: column; /* stack items vertically */
    align-items: center;    /* center horizontally (optional) */
    gap: var(--spacing-sm); /* space between copyright and links */
}

.copyright {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .hero-mosaiq h1 { font-size: 3rem; }
    .section-title { font-size: 2.2rem; }
}
@media (max-width: 768px) {
    .hero-mosaiq .container { grid-template-columns: 1fr; text-align: center; }
    .hero-mosaiq .subtitle { margin-left: auto; margin-right: auto; }
    .hero-actions { justify-content: center; }
    .principles-grid, .how-grid, .eco-grid { grid-template-columns: 1fr; }
    .cases-grid { grid-template-columns: 1fr; }
    .footer-content { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
    .hero-mosaiq h1 { font-size: 2.2rem; }
    .btn { width: 100%; justify-content: center; }
}