/* ==============================================================
   Conterato Analytics - Design System
   Brand Identity v2.0
   Default: Dark Mode | Toggle: Light Mode
   ============================================================== */

/* --------------------------------------------------------------
   1. Design Tokens (Dark Mode Default)
   -------------------------------------------------------------- */
:root {
    /* Brand Colors */
    --color-primary: #0F1A3D;
    --color-primary-light: #1E3A5F;
    --color-secondary: #2D3A4F;
    --color-accent: #00D9C0;
    --color-accent-dark: #00796B;
    --color-accent-light: #00F5D4;

    /* Background */
    --color-background: #0A0F1E;
    --color-surface: #1A1F2E;
    --color-surface-alt: #141925;

    /* Text */
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #B8C5D6;
    --color-text-muted: #5E6B7D;

    /* Border */
    --color-border: #2D3A4F;

    /* Semantic (backwards-compat aliases) */
    --color-accent-blue: #00D9C0;
    --color-accent-cyan: #00F5D4;

    /* Status */
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-info: #3B82F6;

    /* Typography */
    --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    /* Spacing */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Header */
    --header-bg: rgba(10, 15, 30, 0.85);
    --header-height: 72px;
}

/* --------------------------------------------------------------
   2. Light Mode Override
   -------------------------------------------------------------- */
html.light-mode {
    --color-background: #F7F9FC;
    --color-surface: #FFFFFF;
    --color-surface-alt: #EDF2F7;
    --color-text-primary: #1A1F2E;
    --color-text-secondary: #5E6B7D;
    --color-text-muted: #8B95A5;
    --color-border: #E2E8F0;
    --color-accent: #00796B;
    --color-accent-dark: #005A4E;
    --color-accent-light: #00A896;
    --color-accent-blue: #00796B;
    --color-accent-cyan: #00A896;
    --shadow-sm: 0 1px 2px rgba(15, 26, 61, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(15, 26, 61, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(15, 26, 61, 0.1);
    --header-bg: rgba(247, 249, 252, 0.85);
}

/* --------------------------------------------------------------
   3. Global Reset
   -------------------------------------------------------------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    background-color: var(--color-background);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

a:hover {
    color: var(--color-accent-light);
    text-decoration: underline;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.01em;
    color: var(--color-text-primary);
}

::selection {
    background-color: var(--color-accent);
    color: #0A0F1E;
}

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --------------------------------------------------------------
   4. Header / Navigation
   -------------------------------------------------------------- */
.header {
    padding: 0;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    background-color: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: background-color var(--transition-normal);
}

.header .container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    height: 100%;
}

/* Logo - left */
.header-logo {
    flex-shrink: 0;
}

.header-logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    animation: logoEntrance 0.8s ease-out;
}

.header-logo img {
    height: 64px;
    width: auto;
}

.header-logo .logo-dark { display: block; }
.header-logo .logo-light { display: none; }
html.light-mode .header-logo .logo-dark { display: none; }
html.light-mode .header-logo .logo-light { display: block; }

/* Nav - flows between logo and controls */
.header-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

.header-nav a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.85rem;
    transition: color var(--transition-fast);
    white-space: nowrap;
    padding: 6px 10px;
    border-radius: var(--radius-md);
}

.header-nav a:hover,
.header-nav a.active {
    color: var(--color-text-primary);
    text-decoration: none;
    background-color: rgba(255, 255, 255, 0.05);
}

html.light-mode .header-nav a:hover,
html.light-mode .header-nav a.active {
    background-color: rgba(0, 0, 0, 0.04);
}

/* CTA Button */
.cta-button {
    background-color: var(--color-accent);
    color: #0A0F1E !important;
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none !important;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: 0.85rem;
}

.cta-button:hover {
    background-color: var(--color-accent-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 217, 192, 0.2);
    color: #0A0F1E !important;
}

html.light-mode .cta-button {
    color: #FFFFFF !important;
}

html.light-mode .cta-button:hover {
    color: #FFFFFF !important;
    box-shadow: 0 4px 12px rgba(0, 121, 107, 0.25);
}

/* Header Controls - right, compact */
.header-controls {
    display: flex;
    align-items: center;
    gap: 6px;
    justify-self: end;
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    width: 34px;
    height: 34px;
    cursor: pointer;
    color: var(--color-text-muted);
    font-size: 1rem;
    line-height: 1;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.theme-toggle:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.theme-toggle .icon-sun { display: block; }
.theme-toggle .icon-moon { display: none; }
html.light-mode .theme-toggle .icon-sun { display: none; }
html.light-mode .theme-toggle .icon-moon { display: block; }

/* Language Selector */
.lang-selector {
    position: relative;
}

.lang-selector-btn {
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    height: 34px;
    padding: 0 10px;
    cursor: pointer;
    color: var(--color-text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    font-family: var(--font-body);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
    letter-spacing: 0.02em;
}

.lang-selector-btn svg {
    width: 8px;
    height: 5px;
    opacity: 0.6;
}

.lang-selector-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 150px;
    z-index: 1100;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: all var(--transition-fast);
    overflow: hidden;
}

.lang-dropdown.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-dropdown a {
    display: block;
    padding: 8px 14px;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    transition: all var(--transition-fast);
}

.lang-dropdown a:hover {
    background-color: var(--color-surface-alt);
    color: var(--color-text-primary);
    text-decoration: none;
}

.lang-dropdown a.active {
    color: var(--color-accent);
    font-weight: 600;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    width: 34px;
    height: 34px;
    color: var(--color-text-primary);
    font-size: 1.2rem;
    line-height: 1;
    align-items: center;
    justify-content: center;
}

@keyframes logoEntrance {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --------------------------------------------------------------
   5. Hero Section
   -------------------------------------------------------------- */
.hero {
    padding: 100px 0 0 0;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-headline {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    line-height: 1.1;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    max-width: 800px;
}

.hero-subheadline {
    font-size: 1.25rem;
    max-width: 650px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 32px;
}

/* --------------------------------------------------------------
   6. Services Section (Cards)
   -------------------------------------------------------------- */
.services-section {
    padding: 0;
}

.section-title {
    font-family: var(--font-heading);
    text-align: center;
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 48px;
    letter-spacing: -0.01em;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.service-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.service-cardnew {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.service-card:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 100% 0, var(--color-accent), transparent 40%);
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

.service-card:hover:before {
    opacity: 0.08;
}

.service-card h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 12px;
    color: var(--color-text-primary);
}

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

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

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.footer-nav a {
    color: var(--color-text-muted);
    text-decoration: none;
    margin-left: 20px;
    transition: color var(--transition-fast);
    font-size: 0.9rem;
}

.footer-nav a:hover {
    color: var(--color-text-primary);
    text-decoration: none;
}

/* --------------------------------------------------------------
   8. Projects Page
   -------------------------------------------------------------- */
.projects-section {
    padding-top: 120px;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
}

.project-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.project-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-sm);
}

.project-card h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-text-primary);
}

.project-card h4 {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 8px;
}

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

.project-meta {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.meta-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.meta-badge.classe {
    background-color: rgba(0, 217, 192, 0.1);
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
}

.meta-badge.tipo {
    background-color: rgba(0, 245, 212, 0.1);
    color: var(--color-accent-light);
    border: 1px solid var(--color-accent-light);
}

html.light-mode .meta-badge.classe {
    background-color: rgba(0, 121, 107, 0.08);
    color: var(--color-accent);
    border-color: var(--color-accent);
}

html.light-mode .meta-badge.tipo {
    background-color: rgba(0, 168, 150, 0.08);
    color: var(--color-accent-light);
    border-color: var(--color-accent-light);
}

.tool-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.tool-tag {
    background-color: var(--color-surface-alt);
    color: var(--color-text-secondary);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--color-border);
}

/* --------------------------------------------------------------
   9. Product Pages
   -------------------------------------------------------------- */
.product-section {
    padding-top: 120px;
}

.product-content {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.product-description {
    color: var(--color-text-secondary);
    line-height: 1.7;
    font-size: 1.1rem;
}

.product-features ul {
    list-style-type: none;
    padding-left: 0;
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 24px 16px;
    align-items: center;
}

.product-features li {
    display: contents;
}

.feature-title {
    font-weight: 600;
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: 12px;
}

.feature-title .icon {
    color: var(--color-accent);
}

.feature-description {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Screenshots */
.product-screenshots {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin-top: 24px;
}

.screenshot-container {
    overflow: hidden;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.screenshot-container:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.screenshot-img {
    width: 100%;
    display: block;
}

/* Downloads */
.download-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 24px;
}

.download-button {
    background-color: var(--color-accent);
    color: #0A0F1E;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
}

.download-button:hover {
    background-color: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 217, 192, 0.2);
    text-decoration: none;
    color: #0A0F1E;
}

html.light-mode .download-button {
    color: #FFFFFF;
}

html.light-mode .download-button:hover {
    color: #FFFFFF;
    box-shadow: 0 8px 20px rgba(0, 121, 107, 0.25);
}

.download-button .icon {
    font-size: 1.2rem;
}

/* Image Modal */
.image-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility 0s linear var(--transition-normal);
}

.image-modal-overlay.open {
    opacity: 1;
    visibility: visible;
    transition: opacity var(--transition-normal);
}

.image-modal-content {
    max-width: 90%;
    max-height: 90%;
    position: relative;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

.image-modal-overlay.open .image-modal-content {
    transform: scale(1);
}

.modal-image {
    display: block;
    width: auto;
    max-height: 90vh;
    border-radius: var(--radius-md);
}

.modal-close-button {
    position: absolute;
    top: -40px;
    right: 0;
    color: #fff;
    font-size: 2.5rem;
    cursor: pointer;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
    line-height: 1;
}

.modal-close-button:hover {
    opacity: 1;
}

/* --------------------------------------------------------------
   10. VizionTag Page (Value Props)
   -------------------------------------------------------------- */
.value-prop-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 32px;
}

.value-prop-card {
    border: 1px solid var(--color-border);
    padding: 24px;
    border-radius: var(--radius-lg);
    background-color: var(--color-surface-alt);
    transition: border-color var(--transition-normal);
}

.value-prop-card:hover {
    border-color: var(--color-accent);
}

.value-prop-card h4 {
    font-family: var(--font-heading);
    color: var(--color-accent);
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.call-to-action-section {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px;
    margin-top: 40px;
    text-align: center;
}

.call-to-action-section h3 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.call-to-action-section p {
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto 24px auto;
}

/* --------------------------------------------------------------
   11. Responsiveness
   -------------------------------------------------------------- */
@media (max-width: 1100px) {
    .header-nav {
        gap: 2px;
    }
    .header-nav a {
        font-size: 0.8rem;
        padding: 6px 6px;
    }
    .header-logo {
        margin-right: 16px;
    }
}

@media (max-width: 900px) {
    .hero-headline {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 1.875rem;
    }

    .value-prop-grid {
        grid-template-columns: 1fr;
    }

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

    .footer .container {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .footer-nav a {
        margin-left: 0;
        margin: 0 10px;
    }

    /* Mobile: show hamburger, hide nav */
    .mobile-menu-toggle {
        display: flex;
    }

    .header-nav {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        flex-direction: column;
        background-color: var(--color-surface);
        border-bottom: 1px solid var(--color-border);
        padding: 12px 24px;
        gap: 4px;
        box-shadow: var(--shadow-lg);
    }

    .header-nav.open {
        display: flex;
    }

    .header-nav a {
        padding: 10px 12px;
        font-size: 0.95rem;
        border-radius: var(--radius-md);
    }

    .header-controls {
        margin-left: auto;
    }

    .product-features ul {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .product-features li {
        display: flex;
        flex-direction: column;
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .hero-headline {
        font-size: 1.875rem;
    }
    .container {
        padding: 0 16px;
    }
    .header-logo img {
        height: 36px;
    }
}

/* --------------------------------------------------------------
   12. Accessibility
   -------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

@media print {
    *, *::before, *::after {
        background: transparent !important;
        color: #000 !important;
        box-shadow: none !important;
    }
    .header, .footer, .theme-toggle, .lang-selector, .mobile-menu-toggle {
        display: none !important;
    }
}