/* =========================================================
   Robert Levonyan — site styles
   Design language adapted from the "Static" portfolio template:
   Inter, grayscale shades, 12-column grid, oversized display type.
   ========================================================= */

:root {
    --space-3xl: 10rem;
    --space-2xl: 5rem;
    --space-xl: 2.5rem;
    --space-l: 2rem;
    --space-m: 1.5rem;
    --space-s: 1rem;
    --space-xs: 0.75rem;
    --space-2xs: 0.5rem;
    --space-3xs: 0.25rem;

    --lh-heading: 1.15em;
    --lh-body: 1.5em;

    --shade-100: #000;
    --shade-90: #141415;
    --shade-80: #1b1b1b;
    --shade-70: #2d3035;
    --shade-60: #3e3f40;
    --shade-50: #9f9f9f;
    --shade-40: #cfcfcf;
    --shade-30: #e3e3e3;
    --shade-20: #f2f2f2;
    --shade-10: #fff;

    --tile: #141415;
    --button-border: var(--shade-10);
    --icon-ring: rgba(255, 255, 255, 0.08);

    --ease: cubic-bezier(0.165, 0.84, 0.44, 1);
    --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
}

html { color-scheme: light; }

html[data-theme="dark"] {
    color-scheme: dark;
    --shade-100: #fff;
    --shade-90: #ededed;
    --shade-80: #e2e2e2;
    --shade-70: #c8c8c8;
    --shade-60: #b0b0b0;
    --shade-50: #8b8b8d;
    --shade-40: #2c2c2e;
    --shade-30: #1d1d1f;
    --shade-20: #0e0e0f;
    --shade-10: #1c1c1e;

    --tile: #19191b;
    --button-border: #2f2f32;
    --icon-ring: rgba(255, 255, 255, 0.1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    transition: background-color 400ms var(--ease), color 400ms var(--ease);
    background-color: var(--shade-20);
    color: var(--shade-100);
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.3rem;
    letter-spacing: -0.03em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, p, figure { margin: 0; }
h1, h2, h3 { font-weight: 600; line-height: var(--lh-heading); }
p { line-height: var(--lh-body); }
a { color: inherit; text-decoration: none; line-height: var(--lh-heading); }
img { display: block; max-width: 100%; }
ul { list-style: none; margin: 0; padding: 0; }
button { font: inherit; color: inherit; }

:focus-visible {
    outline: 2px solid var(--shade-100);
    outline-offset: 4px;
    border-radius: 2px;
}

/* ---------- Layout ---------- */

.section {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: var(--space-3xl);
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-2xl);
    background-color: var(--shade-20);
}

.container {
    width: 100%;
    max-width: 1540px;
    margin: 0 auto;
    padding: 0 4rem;
}

.grid {
    display: grid;
    width: 100%;
    gap: var(--space-s);
    grid-template-columns: repeat(12, minmax(0.5rem, 1fr));
}

.grid-content { row-gap: var(--space-xl); }
.grid-footer { row-gap: var(--space-xl); }

.v-flex-s { display: flex; flex-direction: column; gap: var(--space-s); }

/* ---------- Type ---------- */

.display-2xl { font-size: 6rem; line-height: var(--lh-heading); font-weight: 600; letter-spacing: -0.045em; }
.display-xl  { font-size: 3rem; line-height: var(--lh-heading); font-weight: 600; letter-spacing: -0.035em; }
.display-m   { font-size: 1.6rem; line-height: var(--lh-heading); font-weight: 600; }
.display-xs  { font-size: 1.15rem; line-height: var(--lh-heading); font-weight: 600; }
.display-light { color: var(--shade-50); }

.body   { color: var(--shade-50); font-weight: 500; }
.body-l { color: var(--shade-50); font-size: 1.25rem; line-height: var(--lh-body); font-weight: 500; }

.display-link { transition: color 350ms var(--ease); word-break: break-all; }
.display-link:hover { color: var(--shade-50); }

.link-l {
    align-self: flex-start;
    padding-bottom: 0.2em;
    border-bottom: 1px solid var(--shade-100);
    font-size: 1.5rem;
    font-weight: 600;
    transition: border-color 350ms var(--ease);
}
.link-l:hover { border-bottom-color: var(--shade-40); }

/* ---------- Buttons ---------- */

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xs);
    min-height: 3.5rem;
    padding: var(--space-s) var(--space-l);
    border: 1px solid var(--button-border);
    border-radius: 50rem;
    background-color: var(--shade-10);
    color: var(--shade-100);
    font-size: 1rem;
    font-weight: 600;
    line-height: var(--lh-heading);
    white-space: nowrap;
    pointer-events: auto;
    transition: transform 350ms var(--ease), color 350ms var(--ease);
}
.button:hover { transform: scale(0.975); color: var(--shade-50); }

.button .dot {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: #34c759;
    box-shadow: 0 0 0 0 rgba(52, 199, 89, 0.5);
    animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse {
    0%   { box-shadow: 0 0 0 0 rgba(52, 199, 89, 0.45); }
    70%  { box-shadow: 0 0 0 8px rgba(52, 199, 89, 0); }
    100% { box-shadow: 0 0 0 0 rgba(52, 199, 89, 0); }
}

/* ---------- Nav ---------- */

.nav {
    position: relative;
    z-index: 99;
    display: flex;
    align-items: center;
    width: 100%;
    min-height: 6rem;
}

.container-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.container-nav .nav-brand { margin-right: auto; }

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.05em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.nav-menu-links {
    display: flex;
    align-items: center;
    gap: var(--space-s);
}

.nav-link {
    color: var(--shade-50);
    font-size: 1.1rem;
    font-weight: 600;
    transition: color 350ms var(--ease);
}
.nav-link:hover,
.nav-link.is-active { color: var(--shade-100); }

.nav-menu .button { min-height: 3rem; padding: var(--space-xs) var(--space-m); }

.nav-menu-button {
    display: none;
    position: relative;
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
}
.nav-menu-button span {
    position: absolute;
    left: 0.5rem;
    right: 0.5rem;
    height: 2px;
    background: var(--shade-90);
    transition: transform 350ms var(--ease), top 350ms var(--ease);
}
.nav-menu-button span:first-child { top: 0.95rem; }
.nav-menu-button span:last-child  { top: 1.45rem; }
.nav-open .nav-menu-button span:first-child { top: 1.2rem; transform: rotate(45deg); }
.nav-open .nav-menu-button span:last-child  { top: 1.2rem; transform: rotate(-45deg); }

/* Theme toggle */
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
}

.theme-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    margin-left: var(--space-s);
    padding: 0;
    border: 1px solid var(--shade-40);
    border-radius: 50%;
    background: transparent;
    color: var(--shade-100);
    cursor: pointer;
    overflow: hidden;
    transition: border-color 350ms var(--ease), transform 350ms var(--ease);
}
.theme-toggle:hover { border-color: var(--shade-50); transform: scale(0.95); }
.theme-toggle svg {
    position: absolute;
    width: 1.15rem;
    height: 1.15rem;
    transition: transform 600ms var(--ease-out-expo), opacity 400ms var(--ease);
}
/* Shows the theme you'll switch TO */
.theme-toggle .icon-sun  { transform: translateY(0) rotate(0); opacity: 1; }
.theme-toggle .icon-moon { transform: translateY(150%) rotate(-90deg); opacity: 0; }
html[data-theme="light"] .theme-toggle .icon-sun  { transform: translateY(-150%) rotate(90deg); opacity: 0; }
html[data-theme="light"] .theme-toggle .icon-moon { transform: none; opacity: 1; }

/* ---------- Hero ---------- */

.section-hero {
    min-height: 90vh;
    min-height: 90svh;
    padding-top: 0;
    padding-bottom: var(--space-xl);
    gap: 0;
}

.hero-main { padding-top: var(--space-l); }

.hero-heading-lines {
    display: flex;
    flex-direction: column;
    font-size: inherit;
}

.reveal-line {
    display: block;
    overflow: hidden;
    padding-bottom: 0.08em;
    margin-bottom: -0.08em;
}
.reveal-line > span {
    display: block;
    transform: translateY(105%);
    transition: transform 1.1s var(--ease-out-expo);
}
.is-loaded .reveal-line > span { transform: none; }
.is-loaded .reveal-line:nth-child(2) > span { transition-delay: 0.08s; }
.is-loaded .reveal-line:nth-child(3) > span { transition-delay: 0.16s; }
.is-loaded .reveal-line:nth-child(4) > span { transition-delay: 0.24s; }

.container-hero-bottom {
    position: absolute;
    inset: auto 0 0;
    padding-bottom: var(--space-xl);
}

.hero-intro { grid-column: 1 / span 6; align-self: end; }

.hero-social {
    grid-column: 7 / span 6;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    align-self: end;
    gap: var(--space-m);
}

/* ---------- Projects ---------- */

.section-below-hero { padding-top: 0; }

.projects-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-s);
    row-gap: var(--space-xl);
}

.project-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-m);
}

.project-card-image-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background-color: var(--tile);
}

/* Full-bleed project imagery */
.project-card-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 900ms var(--ease-out-expo);
}

.project-card-shots {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4%;
    width: 100%;
    height: 100%;
    padding: 6% 6% 0;
    transition: transform 900ms var(--ease-out-expo);
}
.project-card-shots img {
    width: 28%;
    aspect-ratio: 9 / 16;
    object-fit: cover;
    object-position: top;
    border-radius: 0.5rem;
    box-shadow: 0 25px 50px -20px rgba(16, 70, 60, 0.45);
}
.project-card-image.pos-left { object-position: left center; }
.project-card-shots img:nth-child(2) { transform: translateY(-6%); }
.wrapper-bonsy { background: linear-gradient(180deg, #8fd6c8 0%, #c8ede5 100%); }

.project-card-art {
    position: absolute;
    top: 0;
    left: 50%;
    height: 100%;
    width: auto;
    max-width: none;
    transform: translateX(-50%);
    transition: transform 900ms var(--ease-out-expo);
}
.wrapper-ghost { background: linear-gradient(180deg, #5c3b97 0%, #40296a 100%); }

.project-card:hover .project-card-image { transform: scale(1.04); }
.project-card:hover .project-card-art { transform: translateX(-50%) scale(1.04); }
.project-card:hover .project-card-shots { transform: translateY(-2%); }

/* Icon is only a fallback if a remote image fails to load */
.project-card-image-wrapper .project-card-icon { display: none; }
.project-card-image-wrapper.is-fallback { background: var(--tile); }
.project-card-image-wrapper.is-fallback > :not(.project-card-icon):not(.project-card-image-overlay) { display: none; }
.project-card-image-wrapper.is-fallback .project-card-icon { display: block; }

.project-card-icon {
    width: 34%;
    aspect-ratio: 1;
    border-radius: 22%;
    object-fit: cover;
    box-shadow: 0 0 0 1px var(--icon-ring), 0 30px 60px -20px rgba(0, 0, 0, 0.6);
    transition: transform 900ms var(--ease-out-expo);
}

.project-card-image-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.12);
    transition: opacity 600ms var(--ease);
    pointer-events: none;
}

.project-card:hover .project-card-icon { transform: scale(1.08) rotate(-2deg); }
.project-card:hover .project-card-image-overlay { opacity: 0; }

.project-card-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-2xs) var(--space-s);
}

/* Title swap on hover */
.project-card-title {
    position: relative;
    overflow: hidden;
}
.project-card-title-text {
    font-size: 1.6rem;
    line-height: var(--lh-heading);
    font-weight: 600;
    transition: transform 600ms var(--ease-out-expo);
}
.project-card-title-text-absolute {
    position: absolute;
    top: 0;
    left: 0;
    transform: translateY(110%);
}
.project-card:hover .project-card-title-text { transform: translateY(-110%); }
.project-card:hover .project-card-title-text-absolute { transform: translateY(0); }

.project-card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
    white-space: nowrap;
}

/* Secondary list */

.secondary-list { display: block; }

.secondary-project-card {
    display: block;
    position: relative;
    padding: var(--space-l) 0;
    border-bottom: 1px solid var(--shade-40);
    font-weight: 500;
}
.secondary-project-card:first-child { border-top: 1px solid var(--shade-40); }

.secondary-title {
    grid-column: span 6;
    transition: transform 600ms var(--ease-out-expo), color 350ms var(--ease);
}
.secondary-meta {
    grid-column: span 6;
    justify-content: space-between;
}
.secondary-meta .arrow {
    font-size: 1.4rem;
    color: var(--shade-100);
    transition: transform 600ms var(--ease-out-expo);
}
.secondary-project-card:hover .secondary-title { transform: translateX(0.75rem); }
.secondary-project-card:hover .arrow { transform: translate(0.2rem, -0.2rem); }

/* Floating preview that follows the cursor */
.hover-preview {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 50;
    width: 14rem;
    aspect-ratio: 1;
    border-radius: 22%;
    overflow: hidden;
    pointer-events: none;
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.6);
    transition: opacity 300ms var(--ease), transform 500ms var(--ease-out-expo);
    box-shadow: 0 40px 80px -30px rgba(0, 0, 0, 0.45);
}
.hover-preview.is-visible { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.hover-preview img { width: 100%; height: 100%; object-fit: cover; }

.see-all { grid-column: 7 / 13; justify-self: start; }

/* ---------- About ---------- */

.title-s { grid-column: span 2; }

.about-copy {
    grid-column: 7 / 13;
    display: flex;
    flex-direction: column;
    gap: 3.5rem;
    max-width: 50rem;
}

.about-side {
    grid-column: 1 / span 4;
    display: flex;
    flex-direction: column;
    gap: var(--space-l);
}

.about-photo {
    width: 100%;
    max-width: 22rem;
    overflow: hidden;
    background: var(--tile);
}
.about-photo img {
    width: 100%;
    aspect-ratio: 4 / 4.5;
    object-fit: cover;
    filter: grayscale(1);
}

/* ---------- Experience ---------- */

#experience { gap: var(--space-2xl); }

.section-header {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--shade-40);
}

.title-col { grid-column: 1 / span 4; }
.list-col  { grid-column: 7 / 13; }

.xp-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.xp-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-s);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--shade-40);
}
.xp-item:last-child { padding-bottom: 0; border-bottom: 0; }

.xp-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: var(--space-m);
}

.xp-meta {
    display: flex;
    gap: var(--space-xs);
    text-align: right;
    flex-shrink: 0;
}

.xp-desc {
    max-width: 38rem;
    line-height: var(--lh-body);
}

/* ---------- Footer ---------- */

.section-footer {
    z-index: 1;
    min-height: 100vh;
    justify-content: space-between;
    gap: var(--space-2xl);
    padding-bottom: var(--space-xl);
}

.footer-cta {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--shade-40);
    border-bottom: 1px solid var(--shade-40);
}
.footer-cta-label { grid-column: span 6; }
.footer-cta-mail { grid-column: span 6; }
.footer-cta .footer-cta-mail {
    font-size: min(3rem, calc(3.2vw - 0.25rem));
    word-break: normal;
    overflow-wrap: anywhere;
    white-space: nowrap;
}

.footer-item {
    grid-column: span 4;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: var(--space-l);
}
.footer-list-site   { grid-column: 7 / 9; }
.footer-list-social { grid-column: 9 / 11; }

.footer-list,
.footer-menu {
    display: flex;
    flex-direction: column;
    gap: var(--space-s);
}
.footer-list { gap: var(--space-m); }
.footer-menu .nav-link { font-weight: 500; }

.footer-wordmark {
    display: block;
    width: 100%;
    height: auto;
    overflow: visible;
}
.footer-wordmark text {
    font-family: "Inter", sans-serif;
    font-size: 118px;
    font-weight: 700;
    letter-spacing: -0.05em;
    fill: var(--shade-100);
}

/* ---------- Fixed CTA ---------- */

.fixed-cta {
    position: fixed;
    inset: auto 0 0;
    z-index: 999;
    display: flex;
    justify-content: center;
    padding: 0 var(--space-m) var(--space-m);
    pointer-events: none;
    transform: translateY(150%);
    transition: transform 700ms var(--ease-out-expo);
}
.fixed-cta.is-visible { transform: none; }
.fixed-cta .button { box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.25); }

/* ---------- Scroll reveal ---------- */

.js .fade-up {
    opacity: 0;
    transform: translateY(1.5rem);
    transition: opacity 900ms var(--ease), transform 1100ms var(--ease-out-expo);
}
.js .fade-up.is-in { opacity: 1; transform: none; }

/* =========================================================
   Responsive
   ========================================================= */

@media (max-width: 991px) {
    .section { gap: var(--space-2xl); }
    .section-hero { min-height: 75vh; min-height: 75svh; }
    .container { padding: 0 var(--space-l); }
    .grid { grid-template-columns: repeat(8, minmax(0.5rem, 1fr)); }
    .display-2xl { font-size: 4rem; }

    .nav-menu-button { display: block; z-index: 6; }
    .theme-toggle { margin-left: 0; }
    .nav-menu {
        position: absolute;
        top: 100%;
        left: var(--space-l);
        right: var(--space-l);
        z-index: 5;
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-m);
        padding: var(--space-l);
        background-color: var(--shade-30);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-0.5rem);
        transition: opacity 300ms var(--ease), transform 400ms var(--ease-out-expo), visibility 0s 400ms;
    }
    .nav-open .nav-menu {
        opacity: 1;
        visibility: visible;
        transform: none;
        transition: opacity 300ms var(--ease), transform 400ms var(--ease-out-expo);
    }
    .nav-menu-links { flex-direction: column; align-items: flex-start; gap: var(--space-m); }
    .nav-menu .button { min-height: 3.5rem; }

    .hero-intro { grid-column: 1 / -1; }
    .hero-social { grid-column: 1 / -1; justify-content: flex-start; }

    .projects-list { grid-template-columns: minmax(0, 1fr); }
    .hover-preview { display: none; }
    .secondary-title, .secondary-meta { grid-column: span 4; }
    .see-all { grid-column: 1 / -1; }

    .title-s { grid-column: 1 / -1; }
    .about-copy { grid-column: 1 / -1; }
    .about-side { grid-column: 1 / -1; }
    .about-photo { max-width: 18rem; }

    .title-col, .list-col { grid-column: 1 / -1; }
    .section-header { row-gap: var(--space-xl); }

    .footer-cta-label, .footer-cta-mail { grid-column: 1 / -1; }
    .footer-cta .footer-cta-mail { font-size: min(3rem, calc(6.2vw - 0.2rem)); }
    .footer-item { grid-column: 1 / -1; padding-bottom: var(--space-m); }
    .footer-list-site { grid-column: 1 / span 4; }
    .footer-list-social { grid-column: 5 / span 4; }
}

@media (max-width: 767px) {
    .section { padding-top: 3.5rem; padding-bottom: 3.5rem; gap: 5rem; }
    .section-below-hero { padding-top: 0; }
    .section-hero { min-height: 70vh; min-height: 70svh; padding-top: 0; }
    .container { padding: 0 var(--space-m); }
    .nav { min-height: 4.5rem; }
    .nav-menu { left: var(--space-m); right: var(--space-m); padding: var(--space-m); }
    .grid { grid-template-columns: repeat(4, minmax(0.5rem, 1fr)); }

    .section-hero { justify-content: space-between; }
    .container-hero-bottom { position: static; padding-top: var(--space-xl); }
    .hero-intro { margin-bottom: var(--space-2xs); }

    .display-2xl { font-size: 3.25rem; }
    .display-xl  { font-size: 2rem; }
    .display-m   { font-size: 1.3rem; }
    .body-l      { font-size: 1.15rem; }
    .project-card-title-text { font-size: 1.3rem; }

    .secondary-title, .secondary-meta { grid-column: 1 / -1; }
    .about-photo { max-width: 14rem; }
    .about-copy { gap: var(--space-xl); }

    .xp-head { flex-direction: column; gap: var(--space-2xs); }
    .xp-meta { text-align: left; flex-wrap: wrap; }

    .footer-list-site { grid-column: 1 / span 2; }
    .footer-list-social { grid-column: 3 / span 2; }
    .hide-s { display: none; }
}

@media (max-width: 479px) {
    .section-hero { min-height: 62vh; min-height: 62svh; }
    .container-hero-bottom { padding-bottom: var(--space-m); }
    .display-2xl { font-size: 2.6rem; }
    .display-xl  { font-size: 1.75rem; }
    .display-xs  { font-size: 1rem; }
    .link-l      { font-size: 1.25rem; }
    .hero-social { gap: var(--space-s); }
    .project-card-content { flex-direction: column; align-items: flex-start; gap: var(--space-2xs); }
    .project-card-title-text { font-size: 1.2rem; }
    .project-card-meta { font-size: 0.95rem; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        transition-delay: 0s !important;
    }
    .reveal-line > span, .js .fade-up { transform: none; opacity: 1; }
}