:root {
    --color-background: #0b0e15;
    --color-background-soft: #10141d;
    --color-background-raised: #141923;

    --color-surface: #151b26;
    --color-surface-soft: #191f2b;

    --color-border: rgba(255, 255, 255, 0.09);
    --color-border-strong: rgba(255, 255, 255, 0.17);

    --color-text: #f4f6fa;
    --color-text-soft: #d6dbe5;
    --color-text-muted: #929baa;
    --color-text-faint: #697282;

    --color-accent: #8ca9ff;
    --color-accent-hover: #a8bcff;
    --color-accent-soft: rgba(140, 169, 255, 0.1);

    --container-width: 1180px;
    --header-height: 82px;

    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1.25rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4.5rem;
    --space-3xl: 7rem;

    --radius-sm: 8px;
    --radius-md: 18px;
    --radius-lg: 28px;

    --transition-fast: 160ms ease;
    --transition-normal: 240ms ease;
}


/* =========================================================
   Reset
========================================================= */

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    overflow-x: hidden;
    background:
        radial-gradient(circle at 50% -20%,
            rgba(140, 169, 255, 0.07),
            transparent 34%),
        var(--color-background);
    color: var(--color-text);
    font-family:
        Inter,
        "Helvetica Neue",
        Arial,
        sans-serif;
    font-size: 16px;
    line-height: 1.7;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

body.menu-open {
    overflow: hidden;
}

main {
    display: block;
}

[id] {
    scroll-margin-top: calc(var(--header-height) + 1.5rem);
}

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

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
textarea,
select {
    font: inherit;
}

button {
    border: 0;
}

ul,
ol {
    margin-top: 0;
}

h1,
h2,
h3,
h4,
p {
    margin-top: 0;
}

h1,
h2,
h3,
h4 {
    color: var(--color-text);
    line-height: 1.08;
    letter-spacing: -0.045em;
}

h1 {
    font-size: clamp(3rem, 5.6vw, 5.8rem);
}

h2 {
    font-size: clamp(2.2rem, 4.2vw, 4rem);
}

h3 {
    font-size: 1.4rem;
}

p {
    color: var(--color-text-muted);
}


/* =========================================================
   Accessibility
========================================================= */

.skip-link {
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 1000;
    transform: translateY(-160%);
    border-radius: 999px;
    padding: 0.7rem 1rem;
    background: var(--color-accent);
    color: #0b0e15;
    font-weight: 700;
    transition: transform var(--transition-fast);
}

.skip-link:focus {
    transform: translateY(0);
}

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
}


/* =========================================================
   Shared Layout
========================================================= */

.container {
    width: min(calc(100% - 48px),
            var(--container-width));
    margin-inline: auto;
}

.section {
    padding-block: clamp(5.5rem,
            9vw,
            var(--space-3xl));
}

.section-label,
.eyebrow {
    margin-bottom: 1.15rem;
    color: var(--color-accent);
    font-size: 0.7rem;
    font-weight: 750;
    letter-spacing: 0.16em;
    line-height: 1.4;
    text-transform: uppercase;
}

.section-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--space-xl);
    margin-bottom: 3.5rem;
}

.section-heading h2 {
    max-width: 820px;
    margin-bottom: 0;
}

.large-text {
    color: var(--color-text-soft);
    font-size: clamp(1.28rem, 2.2vw, 1.9rem);
    line-height: 1.5;
    letter-spacing: -0.025em;
}

.text-link {
    width: fit-content;
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    color: var(--color-text-soft);
    font-size: 0.88rem;
    font-weight: 700;
    transition:
        color var(--transition-fast),
        gap var(--transition-fast);
}

.text-link:hover,
.text-link:focus-visible {
    gap: 0.8rem;
    color: var(--color-accent);
}

.mobile-link {
    display: none;
}


/* =========================================================
   Header
========================================================= */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    min-height: var(--header-height);
    border-bottom: 1px solid var(--color-border);
    background: rgba(11, 14, 21, 0.86);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.header-inner {
    min-height: var(--header-height);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: var(--space-lg);
}

.site-logo {
    width: fit-content;
    display: inline-flex;
    align-items: center;
}

.site-logo img {
    width: 172px;
    max-height: 40px;
    object-fit: contain;
    object-position: left center;
}

.site-navigation {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
}

.site-navigation a {
    position: relative;
    padding-block: 0.6rem;
    color: var(--color-text-muted);
    font-size: 0.83rem;
    font-weight: 650;
    transition: color var(--transition-fast);
}

.site-navigation a::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    height: 1px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-normal);
}

.site-navigation a:hover,
.site-navigation a:focus-visible,
.site-navigation a[aria-current="page"] {
    color: var(--color-text);
}

.site-navigation a:hover::after,
.site-navigation a:focus-visible::after,
.site-navigation a[aria-current="page"]::after {
    transform: scaleX(1);
    transform-origin: left;
}

.header-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 1rem;
}

.language-link {
    min-height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 0.55rem 0.75rem;
    color: var(--color-text-muted);
    font-size: 0.78rem;
    font-weight: 650;
    line-height: 1;
    transition:
        color var(--transition-fast),
        border-color var(--transition-fast),
        background-color var(--transition-fast);
}

.language-link:hover,
.language-link:focus-visible {
    border-color: var(--color-border);
    background: rgba(255, 255, 255, 0.025);
    color: var(--color-text);
}

.menu-button {
    width: 44px;
    height: 44px;
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    transition:
        border-color var(--transition-fast),
        background-color var(--transition-fast),
        transform var(--transition-fast);
}

.menu-button:hover,
.menu-button:focus-visible {
    border-color: var(--color-border-strong);
    background: var(--color-surface-soft);
}

.menu-button:active {
    transform: scale(0.97);
}

.menu-button-line {
    width: 17px;
    height: 1px;
    display: block;
    background: var(--color-text);
    transition:
        transform var(--transition-normal),
        opacity var(--transition-fast);
}

.menu-button[aria-expanded="true"] .menu-button-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.menu-button[aria-expanded="true"] .menu-button-line:nth-child(2) {
    opacity: 0;
}

.menu-button[aria-expanded="true"] .menu-button-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}


/* =========================================================
   Buttons
========================================================= */

.button {
    min-height: 52px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.7rem;
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 0.82rem 1.5rem;
    font-size: 0.86rem;
    font-weight: 750;
    line-height: 1;
    cursor: pointer;
    transition:
        transform var(--transition-fast),
        background-color var(--transition-fast),
        border-color var(--transition-fast);
}

.button:hover {
    transform: translateY(-3px);
}

.button-primary {
    background: var(--color-accent);
    color: #090c13;
}

.button-primary:hover,
.button-primary:focus-visible {
    background: var(--color-accent-hover);
}

.button-secondary {
    border-color: var(--color-border-strong);
    background: rgba(255, 255, 255, 0.025);
    color: var(--color-text);
}

.button-secondary:hover,
.button-secondary:focus-visible {
    border-color: var(--color-accent);
    background: var(--color-accent-soft);
}


/* =========================================================
   Hero
========================================================= */

.hero {
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
    padding-block: clamp(5.5rem, 10vw, 8rem);
}

.hero-grid {
    display: grid;
    grid-template-columns:
        minmax(0, 1.55fr) minmax(280px, 0.45fr);
    align-items: end;
    gap: clamp(3rem, 8vw, 7rem);
}

.hero-content {
    max-width: 880px;
}

.hero h1 {
    max-width: 880px;
    margin-bottom: 1.8rem;
    line-height: 1;
    letter-spacing: -0.06em;
}

.hero-description {
    max-width: 720px;
    margin-bottom: 2.2rem;
    color: var(--color-text-muted);
    font-size: clamp(1.02rem, 1.45vw, 1.18rem);
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.hero-summary {
    border-top: 1px solid var(--color-border-strong);
}

.summary-item {
    border-bottom: 1px solid var(--color-border);
    padding-block: 1.3rem;
}

.summary-item span {
    display: block;
    margin-bottom: 0.4rem;
    color: var(--color-text-faint);
    font-size: 0.66rem;
    font-weight: 750;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.summary-item strong {
    display: block;
    color: var(--color-text-soft);
    font-size: 0.92rem;
    font-weight: 550;
    line-height: 1.55;
}


/* =========================================================
   Proof Strip
========================================================= */

.proof-section {
    border-block: 1px solid var(--color-border);
    background: var(--color-background-soft);
}

.proof-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.proof-item {
    min-height: 190px;
    display: flex;
    gap: 1.15rem;
    border-right: 1px solid var(--color-border);
    padding: 2.2rem 1.8rem;
}

.proof-item:first-child {
    padding-left: 0;
}

.proof-item:last-child {
    border-right: 0;
    padding-right: 0;
}

.proof-number {
    min-width: fit-content;
    flex: 0 0 auto;
    color: var(--color-accent);
    font-size: clamp(1.25rem, 2vw, 1.8rem);
    font-weight: 750;
    line-height: 1.2;
    letter-spacing: -0.04em;
}

.proof-title {
    margin-bottom: 0.45rem;
    color: var(--color-text);
    font-size: 0.92rem;
    font-weight: 700;
}

.proof-item p:last-child {
    margin-bottom: 0;
    font-size: 0.84rem;
    line-height: 1.7;
}


/* =========================================================
   Profile
========================================================= */

.profile-section {
    background:
        linear-gradient(135deg,
            rgba(140, 169, 255, 0.025),
            transparent 55%);
}

.profile-grid {
    display: grid;
    grid-template-columns:
        minmax(260px, 0.72fr) minmax(0, 1.28fr);
    align-items: center;
    gap: clamp(3rem, 9vw, 8rem);
}

.profile-visual {
    max-width: 420px;
}

.profile-image-frame {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);
    background: var(--color-surface);
}

.profile-image-frame::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        linear-gradient(to top,
            rgba(11, 14, 21, 0.18),
            transparent 38%);
}

.profile-image-frame img {
    width: 100%;
    aspect-ratio: 4 / 5;
    object-fit: cover;
}

.profile-caption {
    max-width: 360px;
    margin: 1rem 0 0;
    font-size: 0.78rem;
}

.profile-content h2 {
    max-width: 760px;
    margin-bottom: 1.8rem;
}

.profile-content .large-text {
    margin-bottom: 1.7rem;
}

.profile-content>p:not(.section-label):not(.large-text) {
    max-width: 690px;
    margin-bottom: 1.8rem;
}


/* =========================================================
   Featured Work
========================================================= */

.work-section {
    border-top: 1px solid var(--color-border);
}

.featured-work-list {
    border-top: 1px solid var(--color-border-strong);
}

.featured-project {
    display: grid;
    grid-template-columns:
        minmax(190px, 0.35fr) minmax(0, 1.65fr);
    gap: clamp(2rem, 6vw, 6rem);
    border-bottom: 1px solid var(--color-border);
    padding-block: clamp(2.8rem, 5vw, 4.4rem);
}

.featured-project-index span {
    display: block;
    margin-bottom: 1.2rem;
    color: rgba(255, 255, 255, 0.17);
    font-size: clamp(4rem, 7vw, 6.5rem);
    font-weight: 750;
    line-height: 0.9;
    letter-spacing: -0.08em;
}

.featured-project-index p {
    margin-bottom: 0;
    color: var(--color-accent);
    font-size: 0.68rem;
    font-weight: 750;
    letter-spacing: 0.15em;
    line-height: 1.5;
    text-transform: uppercase;
}

.featured-project-main h3 {
    max-width: 650px;
    margin-bottom: 1.3rem;
    font-size: clamp(2rem, 3.7vw, 3.5rem);
}

.featured-project-summary {
    max-width: 800px;
    margin-bottom: 2.2rem;
    color: var(--color-text-soft);
    font-size: clamp(1rem, 1.5vw, 1.17rem);
    line-height: 1.75;
}

.project-detail-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.detail-label {
    display: block;
    margin-bottom: 0.65rem;
    color: var(--color-accent);
    font-size: 0.68rem;
    font-weight: 750;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.project-detail-grid p {
    margin-bottom: 0;
    font-size: 0.96rem;
    line-height: 1.72;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.tag-list li {
    border: 1px solid var(--color-border);
    border-radius: 999px;
    padding: 0.46rem 0.78rem;
    background: rgba(255, 255, 255, 0.025);
    color: var(--color-text-muted);
    font-size: 0.7rem;
    line-height: 1.2;
}

.featured-project-link {
    margin-top: 2rem;
    border-bottom: 1px solid var(--color-border-strong);
    padding-bottom: 0.35rem;
}

.featured-project-link:hover,
.featured-project-link:focus-visible {
    border-color: var(--color-accent);
}


/* =========================================================
   Capabilities
========================================================= */

.capability-section {
    border-top: 1px solid var(--color-border);
    background: var(--color-background-soft);
}

.capability-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.capability-card {
    min-height: 390px;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 2.3rem;
    background:
        linear-gradient(145deg,
            rgba(140, 169, 255, 0.055),
            transparent 42%),
        var(--color-surface);
    transition:
        transform var(--transition-normal),
        border-color var(--transition-normal);
}

.capability-card:hover {
    transform: translateY(-5px);
    border-color: rgba(140, 169, 255, 0.4);
}

.capability-number {
    margin-bottom: 3rem;
    color: var(--color-accent);
    font-size: 0.7rem;
    font-weight: 750;
    letter-spacing: 0.14em;
}

.capability-card h3 {
    max-width: 430px;
    margin-bottom: 1rem;
    font-size: clamp(1.55rem, 2.4vw, 2rem);
}

.capability-card>p {
    max-width: 500px;
    margin-bottom: 2rem;
    font-size: 0.96rem;
    line-height: 1.72;
}

.capability-card ul {
    margin: auto 0 0;
    padding: 0;
    list-style: none;
}

.capability-card li {
    border-top: 1px solid var(--color-border);
    padding-block: 0.65rem;
    color: var(--color-text-soft);
    font-size: 0.84rem;
}

.capability-card li:last-child {
    border-bottom: 1px solid var(--color-border);
}


/* =========================================================
   Contribution
========================================================= */

.contribution-section {
    border-top: 1px solid var(--color-border);
}

.contribution-grid {
    display: grid;
    grid-template-columns:
        minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: clamp(3rem, 9vw, 8rem);
}

.contribution-heading {
    position: sticky;
    top: calc(var(--header-height) + 2rem);
    align-self: start;
}

.contribution-heading h2 {
    max-width: 590px;
    margin-bottom: 1.4rem;
}

.contribution-heading>p:last-child {
    max-width: 570px;
    margin-bottom: 0;
}

.contribution-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.contribution-list li {
    display: grid;
    grid-template-columns: 65px 1fr;
    gap: 1.5rem;
    border-top: 1px solid var(--color-border);
    padding-block: 2rem;
}

.contribution-list li:last-child {
    border-bottom: 1px solid var(--color-border);
}

.contribution-list>li>span {
    color: var(--color-accent);
    font-size: 0.72rem;
    font-weight: 750;
    letter-spacing: 0.12em;
}

.contribution-list h3 {
    margin-bottom: 0.6rem;
}

.contribution-list p {
    max-width: 570px;
    margin-bottom: 0;
    font-size: 0.96rem;
    line-height: 1.72;
}


/* =========================================================
   Contact Panel
========================================================= */

.contact-section {
    background:
        radial-gradient(circle at 100% 20%,
            rgba(140, 169, 255, 0.1),
            transparent 30%);
}

.contact-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
    overflow: hidden;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-lg);
    padding: clamp(2.5rem, 5.5vw, 4.8rem);
    background:
        linear-gradient(135deg,
            rgba(140, 169, 255, 0.08),
            transparent 55%),
        var(--color-surface);
}

.contact-panel-content {
    max-width: 820px;
}

.contact-panel h2 {
    margin-bottom: 1.3rem;
    font-size: clamp(2.2rem, 4.3vw, 4rem);
}

.contact-panel p:last-child {
    max-width: 660px;
    margin-bottom: 0;
}


/* =========================================================
   Disclosure
========================================================= */

.disclosure-section {
    padding-bottom: 3rem;
}

.disclosure-section p {
    max-width: 850px;
    margin: 0;
    color: var(--color-text-faint);
    font-size: 0.79rem;
    line-height: 1.65;
}


/* =========================================================
   Tablet
========================================================= */

@media (max-width: 980px) {

    .header-inner {
        grid-template-columns: 1fr auto;
    }

    .site-navigation {
        position: fixed;
        inset: var(--header-height) 0 auto 0;
        max-height: 0;
        display: flex;
        overflow: hidden;
        align-items: stretch;
        flex-direction: column;
        gap: 0;
        padding-inline: 24px;
        background: rgba(11, 14, 21, 0.98);
        opacity: 0;
        visibility: hidden;
        transition:
            max-height var(--transition-normal),
            opacity var(--transition-fast),
            visibility var(--transition-fast);
    }

    .site-navigation.is-open {
        max-height: calc(100vh - var(--header-height));
        overflow-y: auto;
        padding-block: 1rem 2rem;
        opacity: 1;
        visibility: visible;
    }

    .site-navigation a {
        border-bottom: 1px solid var(--color-border);
        padding-block: 1.1rem;
        font-size: 1rem;
    }

    .site-navigation a::after {
        display: none;
    }

    .menu-button {
        display: inline-flex;
    }

    .hero {
        min-height: auto;
    }

    .hero-grid {
        grid-template-columns: 1fr;
        align-items: start;
        gap: 4.5rem;
    }

    .hero-summary {
        width: 100%;
        max-width: 720px;
    }

    .proof-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .proof-item {
        border-bottom: 1px solid var(--color-border);
    }

    .proof-item:nth-child(2) {
        border-right: 0;
        padding-right: 0;
    }

    .proof-item:nth-child(3) {
        padding-left: 0;
    }

    .proof-item:nth-child(3),
    .proof-item:nth-child(4) {
        border-bottom: 0;
    }

    .profile-grid,
    .contribution-grid {
        grid-template-columns: 1fr;
    }

    .profile-visual {
        max-width: 380px;
    }

    .featured-project {
        grid-template-columns: 160px 1fr;
        gap: 3rem;
    }

    .contribution-heading {
        position: static;
    }

}


/* =========================================================
   Mobile
========================================================= */

@media (max-width: 700px) {

    :root {
        --header-height: 72px;
    }

    .container {
        width: min(calc(100% - 30px),
                var(--container-width));
    }

    .site-logo img {
        width: 148px;
    }

    .hero {
        padding-block: 4.8rem;
    }

    .hero-grid {
        gap: 3.5rem;
    }

    .hero h1 {
        font-size: clamp(2.8rem, 12vw, 4.4rem);
        line-height: 1.02;
    }

    .hero-description {
        font-size: 1rem;
    }

    .hero-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .hero-actions .button {
        width: 100%;
    }

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

    .proof-item,
    .proof-item:first-child,
    .proof-item:nth-child(2),
    .proof-item:nth-child(3),
    .proof-item:nth-child(4),
    .proof-item:last-child {
        min-height: auto;
        border-right: 0;
        border-bottom: 1px solid var(--color-border);
        padding: 1.7rem 0;
    }

    .proof-item:last-child {
        border-bottom: 0;
    }

    .section {
        padding-block: 4.8rem;
    }

    .section-heading {
        align-items: flex-start;
        flex-direction: column;
        margin-bottom: 2.5rem;
    }

    .desktop-link {
        display: none;
    }

    .mobile-link {
        display: inline-flex;
        margin-top: 2rem;
    }

    .profile-visual {
        max-width: 100%;
    }

    .featured-project {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .featured-project-index span {
        font-size: 4.5rem;
    }

    .project-detail-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .featured-project-link {
        margin-top: 1.7rem;
    }

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

    .capability-card {
        min-height: auto;
        padding: 1.8rem;
    }

    .capability-number {
        margin-bottom: 2rem;
    }

    .contribution-list li {
        grid-template-columns: 45px 1fr;
        gap: 1rem;
    }

    .contact-panel {
        align-items: flex-start;
        flex-direction: column;
    }

    .contact-panel .button {
        width: 100%;
    }

    .footer-inner {
        align-items: flex-start;
        flex-direction: column;
    }

}


/* =========================================================
   Small Screens
========================================================= */

@media (max-width: 420px) {

    .language-link {
        display: none;
    }

    .hero h1 {
        font-size: 2.65rem;
    }

    .featured-project-main h3 {
        font-size: 1.9rem;
    }

    .capability-card {
        padding: 1.5rem;
    }

}


/* =========================================================
   Reduced Motion
========================================================= */

@media (prefers-reduced-motion: reduce) {

    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }

}

/* =========================================================
   Scroll Progress
========================================================= */

.scroll-progress {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    z-index: 9999;

    width: 100%;
    height: 3px;

    overflow: hidden;
    pointer-events: none;
}

.scroll-progress-bar {
    display: block;
    width: 0;
    height: 100%;
    background:
        linear-gradient(90deg,
            var(--color-accent),
            #a78bfa);
    box-shadow:
        0 0 12px rgba(140, 169, 255, 0.5);
    transform-origin: left center;
    will-change: width;
}


/* =========================================================
   Refined Footer
========================================================= */

.site-footer {
    border-top: 1px solid var(--color-border);

    padding-block:
        clamp(2rem, 4vw, 3rem);

    background:
        rgba(10, 13, 20, 0.52);
}

.footer-inner {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;

    gap: var(--space-xl);
}

.footer-identity {
    display: flex;
    flex-direction: column;

    gap: 0.35rem;
}

.footer-name {
    width: fit-content;

    color: var(--color-text);

    font-size: 0.95rem;
    font-weight: 750;

    letter-spacing: -0.02em;

    transition:
        color var(--transition-fast);
}

.footer-name:hover,
.footer-name:focus-visible {
    color: var(--color-accent);
}

.footer-identity p {
    margin: 0;

    color: var(--color-text-faint);

    font-size: 0.76rem;
    line-height: 1.6;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;

    gap:
        0.7rem 1.5rem;
}

.footer-links a {
    display: inline-flex;
    align-items: center;

    gap: 0.35rem;

    color: var(--color-text-muted);

    font-size: 0.78rem;
    font-weight: 600;

    transition:
        color var(--transition-fast);
}

.footer-links a:hover,
.footer-links a:focus-visible {
    color: var(--color-text);
}


/* =========================================================
   Back to Top
========================================================= */

.back-to-top {
    position: fixed;

    right: clamp(1rem, 2vw, 2rem);
    bottom: clamp(1rem, 2vw, 2rem);

    z-index: 900;

    min-height: 46px;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    gap: 0.55rem;

    border: 1px solid var(--color-border);
    border-radius: 999px;

    padding: 0.65rem 0.95rem;

    background:
        rgba(15, 19, 29, 0.88);

    color: var(--color-text);

    font: inherit;

    font-size: 0.72rem;
    font-weight: 700;
    line-height: 1;

    letter-spacing: 0.05em;

    cursor: pointer;

    opacity: 0;
    visibility: hidden;
    pointer-events: none;

    transform: translateY(14px);

    box-shadow:
        0 12px 32px rgba(0, 0, 0, 0.25);

    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);

    transition:
        opacity 220ms ease,
        visibility 220ms ease,
        transform 220ms ease,
        border-color 220ms ease,
        background-color 220ms ease;
}

.back-to-top.is-visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
}

.back-to-top:hover {
    border-color: var(--color-accent);

    background:
        rgba(140, 169, 255, 0.12);
}

.back-to-top:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
}

.back-to-top-icon {
    width: 30px;
    height: 30px;

    display: grid;
    place-items: center;

    border-radius: 50%;

    background:
        rgba(140, 169, 255, 0.12);

    color: var(--color-accent);

    transition:
        transform 220ms ease,
        background-color 220ms ease;
}

.back-to-top:hover .back-to-top-icon {
    transform: translateY(-2px);

    background:
        rgba(140, 169, 255, 0.2);
}

.back-to-top-text {
    padding-right: 0.1rem;
}


/* =========================================================
   Footer and Back-to-Top — Responsive
========================================================= */

@media (max-width: 700px) {

    .footer-inner {
        align-items: flex-start;
        flex-direction: column;

        gap: 1.5rem;
    }

    .footer-links {
        justify-content: flex-start;

        gap:
            0.8rem 1.25rem;
    }

    .back-to-top {
        width: 46px;
        height: 46px;
        min-height: 46px;

        padding: 0;
    }

    .back-to-top-icon {
        width: auto;
        height: auto;

        background: transparent;
    }

    .back-to-top-text {
        position: absolute;

        width: 1px;
        height: 1px;

        overflow: hidden;

        clip: rect(0 0 0 0);
        clip-path: inset(50%);

        white-space: nowrap;
    }

}


@media (max-width: 420px) {

    .footer-links {
        width: 100%;

        display: grid;
        grid-template-columns:
            repeat(2, minmax(0, 1fr));

        gap: 0.8rem;
    }

}