/* Stefano Capra — portfolio theme */
:root {
    --ink: #161616;
    --ink-soft: #3a3a3a;
    --muted: #6e6e6e;
    --paper: #e9e9e6;
    --surface: #f4f4f1;
    --line: rgba(22, 22, 22, 0.12);
    --line-strong: rgba(22, 22, 22, 0.22);
    --accent: #3f5e5a;
    --accent-hover: #2f4845;
    --accent-soft: rgba(63, 94, 90, 0.1);
    --shadow: 0 18px 40px rgba(22, 22, 22, 0.06);
    --radius: 4px;
    --font-display: "Fraunces", "Times New Roman", serif;
    --font-body: "DM Sans", system-ui, sans-serif;
    --max: 1120px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.65;
    color: var(--ink);
    background-color: var(--paper);
    background-image:
        radial-gradient(ellipse 80% 50% at 10% -10%, rgba(63, 94, 90, 0.12), transparent 55%),
        radial-gradient(ellipse 70% 45% at 100% 0%, rgba(22, 22, 22, 0.05), transparent 50%),
        linear-gradient(180deg, #ecece9 0%, var(--paper) 40%, #e4e4e0 100%);
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: 0.35;
    z-index: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.45'/%3E%3C/svg%3E");
    mix-blend-mode: multiply;
}

.page,
.lang-switcher,
header,
main,
.gallery-shell {
    position: relative;
    z-index: 1;
}

a {
    color: inherit;
}

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

/* Language */
.lang-switcher {
    position: absolute;
    top: 1.25rem;
    right: 1.5rem;
    display: flex;
    gap: 0.35rem;
    z-index: 20;
}

.lang-btn {
    appearance: none;
    background: transparent;
    border: 1px solid var(--line-strong);
    color: var(--muted);
    padding: 0.35rem 0.7rem;
    font-family: var(--font-body);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

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

.lang-btn.active {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--surface);
}

/* Header */
.site-header {
    max-width: var(--max);
    margin: 0 auto;
    padding: 4.5rem 2rem 2rem;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    min-width: 0;
}

.profile-img {
    width: 88px;
    height: 88px;
    object-fit: cover;
    border-radius: 50%;
    border: 1px solid var(--line-strong);
    flex-shrink: 0;
    filter: grayscale(1) contrast(1.05);
    transition: filter 0.4s ease, transform 0.4s ease;
}

.profile-img:hover {
    filter: grayscale(0.35) contrast(1.05);
    transform: scale(1.02);
}

.header-text h1 {
    margin: 0;
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(2.4rem, 5vw, 3.4rem);
    letter-spacing: -0.03em;
    line-height: 1.05;
    color: var(--ink);
}

.header-text p {
    margin: 0.55rem 0 0;
    color: var(--muted);
    font-size: 0.92rem;
    font-weight: 500;
    letter-spacing: 0.01em;
}

.header-contacts {
    display: flex;
    gap: 1.25rem;
    flex-shrink: 0;
}

.header-contacts a {
    text-decoration: none;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-soft);
    border-bottom: 1px solid transparent;
    padding-bottom: 0.15rem;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.header-contacts a:hover {
    color: var(--accent);
    border-color: var(--accent);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    text-decoration: none;
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    margin-bottom: 0.85rem;
    transition: opacity 0.2s ease;
}

.back-link:hover {
    opacity: 0.7;
}

.page-title {
    margin: 0;
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(2.2rem, 4.5vw, 3rem);
    letter-spacing: -0.03em;
    line-height: 1.05;
}

/* Layout */
.main-wrapper {
    max-width: var(--max);
    margin: 0 auto;
    padding: 0.5rem 2rem 4.5rem;
    display: grid;
    grid-template-columns: 1fr 1.15fr;
    gap: 1.75rem 2.25rem;
}

.column {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

.panel {
    background: color-mix(in srgb, var(--surface) 88%, white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.75rem 1.85rem;
    box-shadow: var(--shadow);
}

.panel-label {
    margin: 0 0 1.1rem;
    font-family: var(--font-body);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--accent);
}

.panel p {
    margin: 0 0 1rem;
    color: var(--ink-soft);
    font-size: 0.95rem;
}

.panel p:last-child {
    margin-bottom: 0;
}

.panel h3 {
    margin: 1.35rem 0 0.55rem;
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--ink);
}

.panel ul {
    margin: 0;
    padding-left: 1.1rem;
    color: var(--ink-soft);
}

.panel li {
    margin-bottom: 0.55rem;
    font-size: 0.9rem;
}

.panel li:last-child {
    margin-bottom: 0;
}

.lead {
    margin: 0 0 1.25rem;
    color: var(--muted);
    font-size: 0.9rem;
}

/* Tags */
.tag-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 0.75rem;
    border: 1px solid var(--line);
    background: transparent;
    color: var(--ink-soft);
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.01em;
}

.tag.is-accent {
    border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
    background: var(--accent-soft);
    color: var(--accent-hover);
}

/* App links */
.app-list {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.app-link {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 1rem;
    align-items: start;
    text-decoration: none;
    color: inherit;
    padding: 1rem 1.05rem;
    border: 1px solid var(--line);
    background: var(--surface);
    transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.app-link:hover {
    border-color: var(--accent);
    background: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.app-link:hover .app-icon {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.app-icon {
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    border: 1px solid var(--line-strong);
    color: var(--accent);
    background: var(--accent-soft);
    transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.app-icon svg {
    width: 22px;
    height: 22px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.app-info h3 {
    margin: 0.1rem 0 0.35rem;
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--ink);
}

.app-info p {
    margin: 0;
    font-size: 0.84rem;
    line-height: 1.55;
    color: var(--muted);
}

.app-engine-note {
    margin: 0;
    font-size: 0.8rem;
    line-height: 1.45;
    color: var(--muted);
}

.app-engine-note a {
    color: var(--muted);
    text-decoration: none;
    border-bottom: 1px solid rgba(63, 94, 90, 0.25);
}

.app-engine-note a:hover {
    color: var(--accent);
    border-bottom-color: rgba(63, 94, 90, 0.45);
}

/* Job / gallery */
.employer {
    margin: 0 0 0.2rem;
}

.employer a {
    text-decoration: none;
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--ink);
    transition: color 0.2s ease;
}

.employer a:hover {
    color: var(--accent);
}

.job-role {
    margin: 0 0 0.9rem;
    color: var(--accent);
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.02em;
}

.gallery-btn {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 0.9rem;
    align-items: center;
    margin-top: 1.35rem;
    padding: 0.95rem 1rem;
    text-decoration: none;
    border: 1px solid var(--line);
    background: transparent;
    transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}

.gallery-btn:hover {
    border-color: var(--accent);
    background: var(--accent-soft);
    transform: translateY(-2px);
}

.gallery-btn .app-icon {
    width: 40px;
    height: 40px;
}

.gallery-btn strong {
    display: block;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
}

.gallery-btn p {
    margin: 0.2rem 0 0;
    font-size: 0.8rem;
    color: var(--muted);
    line-height: 1.4;
}

/* Case study CTA */
.cta-box {
    text-align: center;
    margin-top: 1.75rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--line);
}

.btn-app {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: var(--ink);
    color: var(--surface);
    text-decoration: none;
    padding: 0.9rem 1.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    transition: background 0.2s ease, transform 0.2s ease;
}

.btn-app:hover {
    background: var(--accent);
    transform: translateY(-2px);
}

.highlights p {
    display: grid;
    grid-template-columns: 28px 1fr;
    gap: 0.75rem;
    align-items: start;
    margin-bottom: 0.95rem;
}

.highlights p:last-child {
    margin-bottom: 0;
}

.hi-icon {
    width: 28px;
    height: 28px;
    display: grid;
    place-items: center;
    color: var(--accent);
}

.hi-icon svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Gallery page */
.gallery-shell {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 1.5rem 3rem;
    width: 100%;
}

.slideshow-wrapper {
    position: relative;
    width: 100%;
    background: var(--surface);
    border: 1px solid var(--line);
    padding: 0.85rem;
    box-shadow: var(--shadow);
    min-height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.main-image {
    max-width: 100%;
    max-height: 65vh;
    object-fit: contain;
}

.nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 42px;
    height: 42px;
    border: 1px solid var(--line-strong);
    background: color-mix(in srgb, var(--surface) 90%, white);
    color: var(--ink);
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.nav-btn:hover {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--surface);
}

.nav-btn svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.prev { left: 0.75rem; }
.next { right: 0.75rem; }

.counter {
    margin-top: 1rem;
    text-align: center;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--muted);
}

.thumbnails {
    display: flex;
    gap: 0.55rem;
    margin-top: 1.1rem;
    overflow-x: auto;
    padding: 0.25rem 0;
    width: 100%;
}

.thumb {
    width: 58px;
    height: 58px;
    object-fit: cover;
    cursor: pointer;
    border: 1px solid transparent;
    opacity: 0.45;
    transition: opacity 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
    flex-shrink: 0;
    filter: grayscale(0.2);
}

.thumb:hover {
    opacity: 0.8;
}

.thumb.active {
    border-color: var(--accent);
    opacity: 1;
    transform: translateY(-2px);
    filter: none;
}

.gallery-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

@media (max-width: 900px) {
    .site-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding-top: 5rem;
    }

    .header-left {
        flex-direction: column;
    }

    .header-contacts {
        margin-top: 0.25rem;
    }

    .main-wrapper {
        grid-template-columns: 1fr;
        padding: 0.25rem 1.25rem 3.5rem;
    }

    .lang-switcher {
        right: 1rem;
        top: 1rem;
    }
}