/* ============================================
   RUSSO VITTORIO PORTFOLIO
   CSS Stylesheet
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
    --color-bg: #FFFFFF;
    --color-text: #000000;
    --color-text-secondary: #666666;
    --color-placeholder: var(--color-bg);
    --color-border: #E0E0E0;

    --font-main: 'Source Code Pro', monospace;

    --spacing-xs: 8px;
    --spacing-sm: 15px;
    --spacing-md: 20px;
    --spacing-lg: 40px;
    --spacing-xl: 80px;

    --header-height: 80px;
    --footer-height: 60px;

    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Mode - activated when switching to TOOL section */
body.dark-mode {
    --color-bg: #0A0A0A;
    --color-text: #FFFFFF;
    --color-text-secondary: #999999;
    --color-border: #333333;
}

/* Smooth transition for theme change - applied to ALL themed elements */
body,
.header,
.footer,
.main {
    transition: background-color 0.4s ease, color 0.4s ease;
}

/* ---------- Cursor Styles (Native Browser Cursors) ---------- */
/* Using native cursors for performance on Safari/Firefox */
a,
button,
.project-card,
.tool-card,
.toggle__switch,
.toggle__label,
[role="button"],
.clickable {
    cursor: pointer;
}

.cursor-dot {
    position: fixed;
    top: 0;
    left: 0;
    width: 12px;
    height: 12px;
    background-color: var(--color-text);
    border-radius: 50%;
    pointer-events: none;
    z-index: 99999;
    /* Use will-change for better performance */
    will-change: transform;
    transition: width 0.2s ease, height 0.2s ease, background-color 0.2s ease;
}

.cursor-outline {
    position: fixed;
    top: 0;
    left: 0;
    width: 12px;
    height: 12px;
    border: 1.5px solid var(--color-text);
    border-radius: 50%;
    pointer-events: none;
    z-index: 99998;
    opacity: 0;
    visibility: hidden;
    /* Use will-change for better performance */
    will-change: transform, opacity;
    transition: width 0.3s ease, height 0.3s ease, opacity 0.3s ease, visibility 0.3s ease, border-color 0.2s ease;
}

/* Hover state: small dot + visible outline */
.cursor-dot.cursor--hover {
    width: 6px;
    height: 6px;
}

.cursor-outline.cursor--hover {
    opacity: 1;
    visibility: visible;
    width: 20px;
    height: 20px;
}

/* Click state */
.cursor-dot.cursor--click {
    width: 8px;
    height: 8px;
}

.cursor-outline.cursor--click {
    width: 35px;
    height: 35px;
}

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

html {
    font-size: 14px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.4;
    letter-spacing: 0.05em;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

a:hover {
    opacity: 0.7;
}

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

ul,
ol {
    list-style: none;
}

/* ---------- Utilities ---------- */
.hidden {
    display: none !important;
}

.uppercase {
    text-transform: uppercase;
}

/* ---------- Header ---------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    background-color: var(--color-bg);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 0 var(--spacing-xl);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-normal), background-color 0.4s ease;
}

.header.scrolled {
    border-bottom-color: var(--color-border);
}

.header__logo {
    font-weight: 500;
    font-size: 0.857rem;
    text-transform: uppercase;
    justify-self: start;
}

.header__title {
    font-weight: 400;
    font-size: 0.857rem;
    text-transform: uppercase;
    color: var(--color-text);
    justify-self: end;
}

/* Toggle Switch */
.header__toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    justify-self: center;
}

.toggle__label {
    font-size: 0.857rem;
    font-weight: 400;
    text-transform: uppercase;
    cursor: pointer;
    opacity: 0.5;
    transition: opacity var(--transition-fast);
}

.toggle__label.active {
    opacity: 1;
}

.toggle__switch {
    width: 50px;
    height: 26px;
    background-color: var(--color-bg);
    border-radius: 13px;
    border: 1.5px solid var(--color-text);
    cursor: pointer;
    position: relative;
    transition: background-color var(--transition-normal);
}

.toggle__slider {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background-color: var(--color-text);
    border-radius: 50%;
    transition: transform var(--transition-normal);
}

.toggle__switch.active .toggle__slider {
    transform: translateX(24px);
}

/* Static toggle separator for internal pages */
.toggle__switch-static {
    display: inline-block;
    width: 20px;
    text-align: center;
    opacity: 0.5;
}

.toggle__switch-static::before {
    content: '/';
}

/* ---------- Main Content ---------- */
.main {
    flex: 1;
    padding-top: calc(var(--header-height) + var(--spacing-lg) + 100px);
    padding-bottom: calc(var(--footer-height) + var(--spacing-lg));
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* ---------- Horizontal Gallery Container ---------- */
.gallery-wrapper {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.gallery-scroll {
    display: flex;
    gap: var(--spacing-md);
    overflow-x: auto;
    overflow-y: hidden;
    scroll-behavior: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    /* Firefox */
    -ms-overflow-style: none;
    /* IE/Edge */
    padding: 0 var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    /* GPU layer for smooth scrolling */
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

.gallery-scroll::-webkit-scrollbar {
    display: none;
    /* Chrome/Safari */
}

/* Inner track - no longer used for infinite loop */
.gallery-track {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    /* Align cards to top */
}



.project-card {
    flex-shrink: 0;
    cursor: pointer;
    transition: opacity var(--transition-normal);
}

.project-card:hover {
    opacity: 0.9;
}

.project-card__media {
    position: relative;
    overflow: hidden;
    background: transparent;
}

/* Liquid Canvas - Coprire completamente il container */
.liquid-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    cursor: pointer;
    display: block;
}

.project-card__media img,
.project-card__media video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
    z-index: 2;
}

.project-card__media video {
    opacity: 0;
    z-index: 3;
}

.project-card__media .project-card__placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-placeholder);
    z-index: 1;
}

/* Cloned cards ora usano l'effetto fluid - nessuna regola speciale necessaria */

/* Card Sizes for Horizontal Layout - Variable Heights */
.project-card--tall {
    width: 280px;
}

.project-card--tall .project-card__media {
    width: 280px;
    height: 380px;
}

.project-card--medium {
    width: 320px;
}

.project-card--medium .project-card__media {
    width: 320px;
    height: 280px;
}

.project-card--short {
    width: 350px;
}

.project-card--short .project-card__media {
    width: 350px;
    height: 220px;
}

.project-card--square {
    width: 300px;
}

.project-card--square .project-card__media {
    width: 300px;
    height: 300px;
}

.project-card__info {
    padding-top: var(--spacing-sm);
}

.project-card__title {
    font-weight: 600;
    font-size: 0.857rem;
    text-transform: uppercase;
    margin-bottom: var(--spacing-xs);
}

.project-card__made-with {
    font-weight: 400;
    font-size: 0.786rem;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-bottom: 4px;
}

.project-card__tools {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.project-card__tool {
    font-weight: 400;
    font-size: 0.786rem;
    text-transform: uppercase;
    display: inline-block;
}

.project-card__tool:hover {
    text-decoration: underline;
}

/* ---------- Tools Grid (Horizontal Scroll - Uniform) ---------- */
.tools-grid {
    /* Wrapper styles applied via gallery-wrapper */
    margin-top: 50px;
    /* Offset to align with shorter tool cards */
}

.tools-notice {
    display: none;
    /* Hidden on desktop */
    position: absolute;
    top: 180px;
    /* Sotto l'header, vicino al logo */
    left: var(--spacing-xl);
    font-weight: 400;
    font-size: 0.714rem;
    color: var(--color-text-secondary);
    z-index: 10;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.tools-notice.fade-out {
    opacity: 0;
}

/* Show notice only on mobile */
@media (max-width: 768px) {
    .tools-notice:not(.hidden) {
        display: block;
    }
}

.tool-card {
    flex-shrink: 0;
    width: 400px;
    cursor: pointer;
    transition: opacity var(--transition-normal);
}

.tool-card:hover {
    opacity: 0.85;
}

.tool-card__media {
    position: relative;
    overflow: hidden;
    width: 400px;
    height: 232px;
    /* Aspect ratio 240:139 */
    background: transparent;
}

.tool-card__media img,
.tool-card__media video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
    z-index: 2;
}

.tool-card__media video {
    opacity: 0;
    z-index: 3;
}

.tool-card__media .tool-card__placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-placeholder);
    z-index: 1;
}

/* Tool cloned cards ora usano l'effetto fluid - nessuna regola speciale necessaria */

/* Tool cards without fluid effect - video always visible */
.tool-card__media--no-fluid video,
.tool-card__media--no-fluid iframe {
    opacity: 1;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border: none;
    pointer-events: none;
}

.tool-card__info {
    padding-top: var(--spacing-sm);
}

.tool-card__title {
    font-weight: 600;
    font-size: 0.857rem;
    text-transform: uppercase;
}

.tool-card__description {
    font-weight: 400;
    font-size: 0.786rem;
    color: var(--color-text-secondary);
    margin-top: 4px;
    line-height: 1.4;
    max-width: 300px;
}

/* ---------- Footer ---------- */
.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--footer-height);
    background-color: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-xl);
    transition: background-color 0.4s ease;
}

.footer__link {
    font-weight: 400;
    font-size: 0.857rem;
    text-transform: uppercase;
}

.footer__right {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.footer__separator {
    font-weight: 400;
    font-size: 0.857rem;
}

/* ---------- Page Styles ---------- */
.page {
    padding: calc(var(--header-height) + var(--spacing-xl)) var(--spacing-xl) calc(var(--footer-height) + var(--spacing-xl));
    min-height: 100vh;
}

.page__header {
    margin-bottom: var(--spacing-xl);
}

.page__title {
    font-weight: 600;
    font-size: 2rem;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
}

.page__subtitle {
    font-weight: 400;
    font-size: 1rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
}

.page__content {
    max-width: 800px;
}

.page__section {
    margin-bottom: var(--spacing-xl);
}

.page__section-title {
    font-weight: 600;
    font-size: 0.857rem;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

.page__text {
    font-weight: 400;
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

/* ---------- Project Detail Page ---------- */
.project-detail {
    padding: calc(var(--header-height) + var(--spacing-lg)) var(--spacing-xl) calc(var(--footer-height) + var(--spacing-xl));
}

.project-detail__back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 400;
    font-size: 0.857rem;
    text-transform: uppercase;
    margin-bottom: var(--spacing-xs);
}

.project-detail__back:hover {
    opacity: 0.7;
}

.project-detail__hero {
    width: 100%;
    aspect-ratio: 16/9;
    background-color: #FFFFFF;
    margin-bottom: var(--spacing-xs);
    overflow: hidden;
    position: relative;
}

.project-detail__hero img,
.project-detail__hero video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-detail__hero iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.project-detail__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.project-detail__title {
    font-weight: 600;
    font-size: 2rem;
    text-transform: uppercase;
}

.project-detail__meta {
    text-align: right;
}

.project-detail__made-with {
    font-weight: 400;
    font-size: 0.786rem;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}

.project-detail__tools {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
}

.project-detail__tool {
    font-weight: 400;
    font-size: 0.857rem;
    text-transform: uppercase;
}

.project-detail__tool:hover {
    text-decoration: underline;
}

.project-detail__description {
    max-width: 800px;
    margin-bottom: var(--spacing-sm);
}

.project-detail__text {
    font-weight: 400;
    font-size: 1rem;
    line-height: 1.3;
}

.project-detail__gallery {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.project-detail__gallery-columns {
    display: flex;
    gap: var(--spacing-xs);
}

.project-detail__gallery-column {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.project-detail__gallery-item {
    width: 100%;
}

.project-detail__gallery-item--full {
    width: 100%;
}

.project-detail__gallery-item--video {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    /* Default fallback - overridden by JS with actual video dimensions */
}

.project-detail__gallery-item--video iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.project-detail__gallery-item img,
.project-detail__gallery-item video {
    width: 100% !important;
    height: auto !important;
    display: block !important;
    object-fit: contain !important;
    max-width: 100% !important;
}

.project-detail__nav {
    display: flex;
    justify-content: space-between;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.project-detail__nav-link {
    font-weight: 400;
    font-size: 0.857rem;
    text-transform: uppercase;
}

.project-detail__nav-link--disabled {
    opacity: 0.3;
    pointer-events: none;
}

/* ---------- Contact Page ---------- */
.contact__list {
    margin-bottom: var(--spacing-xl);
}

.contact__item {
    margin-bottom: var(--spacing-md);
}

.contact__label {
    font-weight: 400;
    font-size: 0.786rem;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-bottom: 4px;
}

.contact__value {
    font-weight: 500;
    font-size: 1rem;
    text-transform: uppercase;
}

.contact__social {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.contact__social-link {
    font-weight: 500;
    font-size: 1rem;
    text-transform: uppercase;
}

/* ---------- Responsive Styles ---------- */

/* Tablet */
@media (max-width: 1200px) {
    :root {
        --spacing-xl: 40px;
    }

    .header__title {
        font-size: 0.714rem;
        /* Smaller on tablet, still one line */
    }

    /* Horizontal gallery cards - slightly smaller on tablet */
    .project-card--tall {
        width: 240px;
    }

    .project-card--tall .project-card__media {
        width: 240px;
        height: 320px;
    }

    .project-card--medium {
        width: 280px;
    }

    .project-card--medium .project-card__media {
        width: 280px;
        height: 240px;
    }

    .project-card--short {
        width: 300px;
    }

    .project-card--short .project-card__media {
        width: 300px;
        height: 190px;
    }

    .project-card--square {
        width: 260px;
    }

    .project-card--square .project-card__media {
        width: 260px;
        height: 260px;
    }

    .tool-card {
        width: 340px;
    }

    .tool-card__media {
        width: 340px;
        height: 240px;
    }

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

/* Mobile */
@media (max-width: 768px) {
    :root {
        --spacing-xl: 20px;
        --header-height: 70px;
        --footer-height: 50px;
    }

    html {
        font-size: 13px;
    }

    .header {
        padding: 0 var(--spacing-md);
        grid-template-columns: 1fr auto 1fr;
    }

    .header__logo {
        font-size: 0.714rem;
    }

    /* Show title on mobile, smaller and wrapped */
    .header__title {
        display: block;
        font-size: 0.5rem;
        max-width: 100px;
        /* Allows 2 lines */
        line-height: 1;
        text-align: right;
    }

    .toggle__label {
        font-size: 0.786rem;
    }

    .toggle__switch {
        width: 40px;
        height: 22px;
        border-radius: 11px;
    }

    .toggle__slider {
        width: 14px;
        height: 14px;
        top: 2px;
        left: 2px;
    }

    .toggle__switch.active .toggle__slider {
        transform: translateX(18px);
    }

    .main {
        padding-top: calc(var(--header-height) + var(--spacing-md) + 50px);
        padding-bottom: calc(var(--footer-height) + var(--spacing-md));
    }

    /* Horizontal gallery cards - mobile sizes */
    .project-card--tall {
        width: 200px;
    }

    .project-card--tall .project-card__media {
        width: 200px;
        height: 270px;
    }

    .project-card--medium {
        width: 220px;
    }

    .project-card--medium .project-card__media {
        width: 220px;
        height: 190px;
    }

    .project-card--short {
        width: 240px;
    }

    .project-card--short .project-card__media {
        width: 240px;
        height: 150px;
    }

    .project-card--square {
        width: 200px;
    }

    .project-card--square .project-card__media {
        width: 200px;
        height: 200px;
    }

    .tool-card {
        width: 280px;
    }

    .tool-card__media {
        width: 280px;
        height: 200px;
    }

    .footer {
        padding: 0 var(--spacing-md);
    }

    .footer__link {
        font-size: 0.786rem;
    }

    .page {
        padding: calc(var(--header-height) + var(--spacing-lg)) var(--spacing-md) calc(var(--footer-height) + var(--spacing-lg));
    }

    .page__title {
        font-size: 1.5rem;
    }

    .project-detail {
        padding: calc(var(--header-height) + var(--spacing-md)) var(--spacing-md) calc(var(--footer-height) + var(--spacing-md));
    }

    .project-detail__header {
        flex-direction: column;
    }

    .project-detail__meta {
        text-align: left;
    }

    .project-detail__tools {
        align-items: flex-start;
    }

    .project-detail__title {
        font-size: 1.5rem;
    }

    /* Project detail - full width media on mobile */
    .project-detail__gallery-columns {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .project-detail__gallery-column {
        width: 100%;
    }

    .project-detail__gallery-item,
    .project-detail__gallery-item--full,
    .project-detail__gallery-item--video {
        width: calc(100% + var(--spacing-md) * 2);
        margin-left: calc(-1 * var(--spacing-md));
        margin-right: calc(-1 * var(--spacing-md));
    }

    .project-detail__gallery-item img,
    .project-detail__gallery-item video {
        width: 100% !important;
        height: auto !important;
    }

    .project-detail__hero {
        width: calc(100% + var(--spacing-md) * 2);
        margin-left: calc(-1 * var(--spacing-md));
        margin-right: calc(-1 * var(--spacing-md));
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .header__toggle {
        gap: var(--spacing-xs);
    }

    /* Even smaller cards on small mobile */
    .project-card--tall,
    .project-card--medium,
    .project-card--short,
    .project-card--square {
        width: 180px;
    }

    .project-card--tall .project-card__media {
        width: 180px;
        height: 240px;
    }

    .project-card--medium .project-card__media {
        width: 180px;
        height: 150px;
    }

    .project-card--short .project-card__media {
        width: 180px;
        height: 120px;
    }

    .project-card--square .project-card__media {
        width: 180px;
        height: 180px;
    }

    .tool-card {
        width: 220px;
    }

    .tool-card__media {
        width: 220px;
        height: 160px;
    }
}

/* ---------- Animations ---------- */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translate3d(-20px, 0, 0);
        -webkit-transform: translate3d(-20px, 0, 0);
    }

    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
        -webkit-transform: translate3d(0, 0, 0);
    }
}

.project-card,
.tool-card {
    animation: fadeIn 0.5s ease forwards;
    opacity: 0;
}

.project-card:nth-child(1),
.tool-card:nth-child(1) {
    animation-delay: 0.05s;
}

.project-card:nth-child(2),
.tool-card:nth-child(2) {
    animation-delay: 0.1s;
}

.project-card:nth-child(3),
.tool-card:nth-child(3) {
    animation-delay: 0.15s;
}

.project-card:nth-child(4),
.tool-card:nth-child(4) {
    animation-delay: 0.2s;
}

.project-card:nth-child(5),
.tool-card:nth-child(5) {
    animation-delay: 0.25s;
}

.project-card:nth-child(6),
.tool-card:nth-child(6) {
    animation-delay: 0.3s;
}

.project-card:nth-child(7),
.tool-card:nth-child(7) {
    animation-delay: 0.35s;
}

.project-card:nth-child(8),
.tool-card:nth-child(8) {
    animation-delay: 0.4s;
}

.project-card:nth-child(9),
.tool-card:nth-child(9) {
    animation-delay: 0.45s;
}

.project-card:nth-child(10),
.tool-card:nth-child(10) {
    animation-delay: 0.5s;
}

.project-card:nth-child(11),
.tool-card:nth-child(11) {
    animation-delay: 0.55s;
}

.project-card:nth-child(12),
.tool-card:nth-child(12) {
    animation-delay: 0.6s;
}

/* Cloned items (for infinite scroll) should not animate */
.project-card.clone,
.tool-card.clone {
    animation: none;
    opacity: 1;
}

/* View Transition */
.projects-grid,
.tools-grid {
    transition: opacity var(--transition-normal);
}

.projects-grid.fade-out,
.tools-grid.fade-out {
    opacity: 0;
}