/* ============================================
   NEX Oy - Main Stylesheet
   Theme: Light (default) / Dark
   Font: Red Hat Display (Regular)
   ============================================ */

/* --------------------------------------------
   CSS Custom Properties (Theme Variables)
   -------------------------------------------- */
:root {
    /* Light Theme (Default) */
    --bg-primary: #f1f1f1;
    --bg-secondary: #e8e8e8;
    --text-primary: #222121;
    --text-secondary: #444444;
    --divider-line: #ffffff;
    --divider-glow: rgba(0, 0, 0, 0.4);
    --nav-hover-glow: rgba(0, 0, 0, 0.3);
    
    /* Spacing */
    --section-padding: 100vh;
    --content-max-width: 100%;
    --content-padding: 4rem;
    
    /* Transitions */
    --transition-speed: 0.3s;
    --transition-ease: ease-in-out;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #242424;
    --text-primary: #f1f1f1;
    --text-secondary: #cccccc;
    --divider-line: #333333;
    --divider-glow: rgba(255, 255, 255, 0.3);
    --nav-hover-glow: rgba(255, 255, 255, 0.3);
}

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

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

body {
    font-family: 'Red Hat Display', sans-serif;
    font-weight: 400;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-speed) var(--transition-ease),
                color var(--transition-speed) var(--transition-ease);
}

/* --------------------------------------------
   Theme Toggle
   -------------------------------------------- */
.theme-toggle {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 1000;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    transition: filter var(--transition-speed) var(--transition-ease);
}

.theme-toggle:hover {
    filter: drop-shadow(0 0 15px var(--nav-hover-glow))
            drop-shadow(0 0 30px var(--nav-hover-glow))
            drop-shadow(0 0 45px var(--nav-hover-glow))
            drop-shadow(0 0 60px var(--nav-hover-glow));
}

.theme-icon {
    width: 40px;
    height: auto;
    display: block;
}

/* --------------------------------------------
   Navigation Arrows
   -------------------------------------------- */
.nav-arrows {
    position: fixed;
    left: 1.5rem;
    top: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 1.5rem 0;
    z-index: 1000;
    pointer-events: none;
}

.nav-arrow {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    pointer-events: auto;
    transition: filter var(--transition-speed) var(--transition-ease),
                opacity var(--transition-speed) var(--transition-ease);
}

.nav-arrow:hover {
    filter: drop-shadow(0 0 15px var(--nav-hover-glow))
            drop-shadow(0 0 30px var(--nav-hover-glow))
            drop-shadow(0 0 45px var(--nav-hover-glow))
            drop-shadow(0 0 60px var(--nav-hover-glow));
}

.nav-arrow.hidden {
    opacity: 0;
    pointer-events: none;
}

.arrow-icon {
    width: 32px;
    height: auto;
    display: block;
}

/* --------------------------------------------
   Sections - General
   -------------------------------------------- */
.section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--content-padding);
    margin-bottom: 50vh;
}

.section-content {
    justify-content: flex-start;
    padding-top: 2rem;
}

/* --------------------------------------------
   Landing Section
   -------------------------------------------- */
.section-landing {
    text-align: center;
    padding-left: 0;
    padding-right: 0;
}

.landing-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    margin-top: -5vh;
}

.tagline {
    font-size: 3rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    color: var(--text-primary);
}

.logo-container {
    padding: 2rem 0;
}

.main-logo {
    width: 80vw;
    max-width: none;
    height: auto;}

/* --------------------------------------------
   Divider
   -------------------------------------------- */
.divider {
    width: 100%;
    height: 3px;
    background-color: var(--divider-line);
    box-shadow: 0 -6px 20px var(--divider-glow),
                0 6px 20px var(--divider-glow);
}

/* --------------------------------------------
   Main Navigation (WHAT WHO WHERE)
   -------------------------------------------- */
.main-nav {
    display: flex;
    justify-content: center;
    gap: 8rem;
    padding-top: 1rem;
}

.nav-link {
    font-size: 2.25rem;
    font-weight: 400;
    letter-spacing: 0.2em;
    color: var(--text-primary);
    text-decoration: none;
    transition: text-shadow var(--transition-speed) var(--transition-ease);
}

.nav-link:hover {
    text-shadow: 0 0 20px var(--nav-hover-glow),
                0 0 40px var(--nav-hover-glow),
                0 0 60px var(--nav-hover-glow),
                0 0 80px var(--nav-hover-glow);
}



/* --------------------------------------------
   Content Sections (WHAT, WHO, WHERE)
   -------------------------------------------- */
.section-header {
    width: 100%;
    text-align: center;
    margin-bottom: 1.5rem;
    padding: 0 var(--content-padding);
}

/* --------------------------------------------
   Lead text (larger first paragraph)
   -------------------------------------------- */
.content-text-lead {
    font-size: 1.35rem;
}

/* --------------------------------------------
   Retro hover easter egg (Commodore/Amiga)
   -------------------------------------------- */
.retro-hover {
    position: relative;
    cursor: default;
}

.retro-hover::after {
    content: attr(data-credit);
    position: absolute;
    top: -1.2em;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    opacity: 0;
    transition: opacity var(--transition-speed) var(--transition-ease);
    pointer-events: none;
}

.retro-hover:hover::after {
    opacity: 0.7;
}

/* --------------------------------------------
   Icon links (universal style)
   -------------------------------------------- */
.icon-link {
    display: inline-block;
    transition: filter var(--transition-speed) var(--transition-ease);
}

.icon-link:hover {
    filter: drop-shadow(0 0 15px var(--nav-hover-glow))
            drop-shadow(0 0 30px var(--nav-hover-glow));
}

.icon-image {
    height: 48px;
    width: auto;
    display: block;
}

.icon-material {
    font-size: 48px;
    color: var(--text-primary);
}

/* --------------------------------------------
   WHAT Section list
   -------------------------------------------- */
.what-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.what-list li {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.what-list strong {
    color: var(--text-primary);
    font-weight: 400;
}

/* --------------------------------------------
   WHAT Section links row
   -------------------------------------------- */
.what-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 3rem;
    width: 100%;
}

/* --------------------------------------------
   WHO Section - Person Cards
   -------------------------------------------- */
.who-grid {
    gap: 4rem;
}

.person-card {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.person-name {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 0.5rem;
}

.person-main {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.person-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.person-image {
    flex-shrink: 0;
}

.portrait {
    width: 200px;
    height: auto;
    display: block;
}

.person-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.keyword {
    font-size: 0.875rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.keyword:not(:last-child)::after {
    content: " |";
    margin-left: 0.5rem;
    opacity: 0.6;
}

/* --------------------------------------------
   WHERE Section
   -------------------------------------------- */
.where-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 4rem;
}

.where-map {
    display: flex;
    justify-content: center;
}

.map-image {
    max-width: 100%;
    height: auto;
    max-height: 500px;
}

.where-contact {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: flex-start;
}

.contact-item {
    display: flex;
    flex-direction: column;
}

.contact-link {
    font-size: 1.5rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: text-shadow var(--transition-speed) var(--transition-ease);
}

.contact-link:hover {
    text-shadow: 0 0 20px var(--nav-hover-glow),
                0 0 40px var(--nav-hover-glow),
                0 0 60px var(--nav-hover-glow),
                0 0 80px var(--nav-hover-glow);
}

.contact-label {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.contact-location {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.email-image {
    height: 1.75rem;
    width: auto;
    display: block;
    transition: filter var(--transition-speed) var(--transition-ease);
}

.contact-email:hover .email-image {
    filter: drop-shadow(0 0 15px var(--nav-hover-glow))
            drop-shadow(0 0 30px var(--nav-hover-glow));
}

.section-title {
    font-size: 2.5rem;
    font-weight: 400;
    letter-spacing: 0.05em;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    width: 100%;
    padding: 3rem var(--content-padding) 0 var(--content-padding);
}

.content-column {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.content-heading {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 0.5rem;
}

.content-text {
    font-size: 1.125rem;
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* --------------------------------------------
   Footer
   -------------------------------------------- */
.site-footer {
    padding: 2rem var(--content-padding);
    text-align: center;
}

.footer-content {
    padding-top: 2rem;
}

.footer-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.footer-legal {
    font-size: 0.75rem;
}

.vat-toggle {
    cursor: default;
}

.vat-toggle::before {
    content: attr(title);
    display: none;
}

.vat-toggle:hover {
    font-size: 0;
}

.vat-toggle:hover::before {
    display: inline;
    font-size: 0.75rem;
}

/* --------------------------------------------
   Responsive - Tablet
   -------------------------------------------- */
@media screen and (max-width: 968px) {
    .content-grid {
        gap: 2rem;
    }
    
    .main-nav {
        gap: 2rem;
    }
    
    .main-logo {
        width: 500px;
    }
}

/* --------------------------------------------
   Responsive - Mobile
   -------------------------------------------- */
@media screen and (max-width: 640px) {
    .nav-arrows {
        left: 0.75rem;
    }
    
    .theme-toggle {
        top: 1rem;
        right: 1rem;
    }
    
    .theme-icon {
        width: 32px;
    }
    
    .arrow-icon {
        width: 24px;
    }
    
    .section {
        padding: 1rem;
    }
    
    .section-content {
        padding-top: 3rem;
    }
    
    .tagline {
        font-size: 1.125rem;
    }
    
    .main-logo {
        width: 90vw;
        max-width: 400px;
    }
    
    .main-nav {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .nav-link {
        font-size: 1.125rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .content-heading {
        font-size: 1.125rem;
    }
    
    .content-text {
        font-size: 0.9375rem;
    }
    
    /* WHO section mobile */
    .person-main {
        flex-direction: column-reverse;
        align-items: center;
        text-align: center;
    }
    
    .person-name {
        text-align: center;
    }
    
    .portrait {
        width: 150px;
        margin-bottom: 1rem;
    }
    
    .person-keywords {
        justify-content: center;
    }
    
    /* WHERE section mobile */
    .where-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .where-contact {
        align-items: center;
    }
    
    .map-image {
        max-height: 350px;
    }
}