/* =========================================================
   Matt C — Refactored Site Stylesheet
   Preserves current light-mode look
   Adds simple dark mode via: html[data-theme="dark"]
   ========================================================= */

/* ============================
   1) Theme Tokens
   ============================ */

:root {
    color-scheme: light;

    --bg: #f5f2ea;
    --bg-alt: #ece7dc;
    --text: #161616;
    --text-strong: #111111;
    --muted: #5d5c58;
    --muted-strong: #2b2b29;

    --surface-soft: rgba(255, 255, 255, 0.58);
    --surface: rgba(255, 255, 255, 0.62);
    --surface-strong: rgba(255, 255, 255, 0.8);
    --surface-hover: rgba(255, 255, 255, 0.92);

    --border: rgba(22, 22, 22, 0.1);
    --border-strong: rgba(22, 22, 22, 0.16);

    --shadow: 0 14px 40px rgba(20, 20, 20, 0.08);
    --shadow-soft: 0 10px 24px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 18px 40px rgba(0, 0, 0, 0.08);
    --shadow-icon: 0 8px 18px rgba(0, 0, 0, 0.06);

    --radius: 22px;
    --radius-sm: 16px;
    --radius-pill: 999px;

    --container: 1120px;
    --container-wide: 1200px;
    --container-narrow: 700px;

    --section-space: clamp(4rem, 8vw, 6.5rem);
    --section-space-tight: clamp(2rem, 4vw, 3rem);

    --heading-max: 34rem;
    --body-max: 42rem;

    --fs-kicker: 0.75rem;
    --fs-body: 1.02rem;
    --fs-body-lg: 1.1rem;
    --fs-h2: clamp(2.1rem, 3.5vw, 3rem);
    --fs-h3: 1.15rem;

    --blue: #2d57d9;
    --blue-deep: #243b7a;
    --blue-deep-hover: #1d3267;
    --violet: #7a5af8;
    --amber: #d48a10;
    --emerald: #10936f;
    --rose: #d64f72;
    --sky: #3f7ae0;
    --gold: #c58a16;
    --warm-brown: #7a5a21;

    --button-secondary-bg: #ece7dc;
    --button-secondary-hover: #e6e0d4;

    --focus-ring: rgba(45, 87, 217, 0.35);
}

/* ============================
   2) Dark Theme
   ============================ */

html[data-theme="dark"] {
    color-scheme: dark;

    --bg: #1b1a18;
    --bg-alt: #24211d;
    --text: #f3ede3;
    --text-strong: #fcf8f2;
    --muted: #c3baad;
    --muted-strong: #e7decf;

    --surface-soft: rgba(43, 40, 36, 0.58);
    --surface: rgba(43, 40, 36, 0.68);
    --surface-strong: rgba(43, 40, 36, 0.88);
    --surface-hover: rgba(54, 50, 45, 0.96);

    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.14);

    --shadow: 0 16px 42px rgba(0, 0, 0, 0.28);
    --shadow-soft: 0 10px 24px rgba(0, 0, 0, 0.18);
    --shadow-hover: 0 18px 40px rgba(0, 0, 0, 0.28);
    --shadow-icon: 0 8px 18px rgba(0, 0, 0, 0.18);

    --blue: #6d89f0;
    --blue-deep: #5d78d6;
    --blue-deep-hover: #4f68bb;
    --violet: #a892ff;
    --amber: #e0a740;
    --emerald: #3dc19a;
    --rose: #ea7f9f;
    --sky: #74a3ff;
    --gold: #ddb15c;
    --warm-brown: #d0a66b;

    --button-secondary-bg: rgba(255, 255, 255, 0.06);
    --button-secondary-hover: rgba(255, 255, 255, 0.1);

    --focus-ring: rgba(109, 137, 240, 0.4);
}

/* ============================
   3) Base / Reset
   ============================ */

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Inter, sans-serif;
    background:
        radial-gradient(circle at top left, rgba(45, 87, 217, 0.05), transparent 30%),
        radial-gradient(circle at 85% 20%, rgba(0, 0, 0, 0.03), transparent 25%),
        var(--bg);
    color: var(--text);
}

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

a {
    color: inherit;
}

:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: 3px;
}

/* ============================
   4) Layout
   ============================ */

.section {
    padding: var(--section-space-tight) 0 var(--section-space);
}

.hero,
.narrative,
.capabilities,
.values,
.portfolio-intro,
.projects,
.branding,
.static-sites,
.sunset,
.about,
.special-project,
.cta,
.site-footer {
    scroll-margin-top: 96px;
}

.projects,
.lab,
.sunset,
.about,
.cta {
    padding-top: var(--section-space-tight);
}

.container {
    width: min(calc(100% - 2rem), var(--container));
    margin: 0 auto;
}

.container.wide {
    width: min(calc(100% - 2rem), var(--container-wide));
}

.container.narrow {
    width: min(calc(100% - 2rem), var(--container-narrow));
}

/* ============================
   5) Shared Typography
   ============================ */

.eyebrow,
.panel-kicker,
.panel-label,
.section-kicker {
    font-size: var(--fs-kicker);
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--muted);
}

.section-heading {
    display: grid;
    gap: 0.45rem;
    margin-bottom: 1.75rem;
}

.section-heading h2 {
    margin: 0;
    max-width: var(--heading-max);
    font-family: "Playfair Display", serif;
    font-size: var(--fs-h2);
    line-height: 1.02;
    letter-spacing: -0.035em;
}

.section-sub {
    margin: 0;
    max-width: 38rem;
    color: var(--muted);
    font-size: 1rem;
    line-height: 1.7;
}

/* ============================
   6) Header / Nav
   ============================ */

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    padding: 1rem 0 0;
}

.nav-shell {
    width: min(calc(100% - 2rem), var(--container));
    margin: 0 auto;
    padding: 0.95rem 1.15rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    background: color-mix(in srgb, var(--surface-strong) 92%, transparent);
    backdrop-filter: blur(14px);
    box-shadow: var(--shadow-soft);
}

.brand {
    font-size: 0.98rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text);
    text-decoration: none;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.nav-links a {
    color: var(--muted);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.65rem 0.9rem;
    border-radius: var(--radius-pill);
    text-decoration: none;
    transition:
        color 160ms ease,
        background 160ms ease,
        transform 160ms ease,
        border-color 160ms ease;
}

.nav-links a:hover {
    color: var(--text);
    background: color-mix(in srgb, var(--surface-strong) 96%, transparent);
}

.nav-link-contact {
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--surface) 92%, transparent);
}

.nav-link-contact:hover {
    background: color-mix(in srgb, var(--surface-hover) 96%, transparent);
}

/* ============================
   7) Buttons
   ============================ */

.button,
.special-project-link {
    text-decoration: none;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0.8rem 1.1rem;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border);
    font-weight: 600;
    transition:
        transform 160ms ease,
        background 160ms ease,
        border-color 160ms ease,
        color 160ms ease;
}

.button:hover {
    transform: translateY(-1px);
}

.button-primary {
    background: var(--blue-deep);
    color: #ffffff;
    border-color: var(--blue-deep);
}

.button-primary:hover {
    background: var(--blue-deep-hover);
    border-color: var(--blue-deep-hover);
}

.button-secondary {
    background: var(--button-secondary-bg);
    color: var(--text);
    border-color: var(--border);
}

.button-secondary:hover {
    background: var(--button-secondary-hover);
}

/* ============================
   8) Hero
   ============================ */

.hero {
    padding: 5.5rem 0 4rem;
}

.hero-shell {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.7fr);
    gap: 2.25rem;
    align-items: center;
}

.hero-copy {
    padding: 2.5rem 0 1rem;
}

.hero h1 {
    margin: 0.45rem 0 1rem;
    font-family: "Playfair Display", serif;
    font-size: clamp(3.2rem, 7vw, 5.8rem);
    line-height: 0.94;
    letter-spacing: -0.055em;
    max-width: 8ch;
}

.hero-intro {
    max-width: 42rem;
    display: grid;
    gap: 1rem;
}

.hero-lead {
    margin: 0;
    font-size: clamp(1.18rem, 2vw, 1.5rem);
    line-height: 1.45;
    color: var(--text);
    font-weight: 500;
    max-width: 32rem;
}

.hero-intro p:not(.hero-lead) {
    margin: 0;
    color: var(--muted);
    font-size: 1.03rem;
    line-height: 1.75;
}

.hero-actions {
    margin-top: 1.75rem;
    display: flex;
    gap: 0.85rem;
    flex-wrap: wrap;
}

.hero-image-frame {
    width: 100%;
    max-width: 340px;
    margin-left: auto;
    border-radius: 28px;
    padding: 0.75rem;
    background:
        linear-gradient(180deg, color-mix(in srgb, var(--surface-soft) 90%, transparent), var(--surface-strong)),
        radial-gradient(circle at top right, rgba(45, 87, 217, 0.08), transparent 42%);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-hover);
}

.hero-image-frame img {
    width: 100%;
    aspect-ratio: 4 / 5;
    object-fit: cover;
    display: block;
    border-radius: 20px;
}

/* ============================
   9) Narrative
   ============================ */

.narrative {
    padding-top: 1.5rem;
}

.narrative-body {
    max-width: var(--body-max);
    display: grid;
    gap: 1rem;
}

.narrative-body p {
    margin: 0;
    color: var(--muted);
    font-size: var(--fs-body-lg);
    line-height: 1.82;
}

/* ============================
   10) Capabilities
   ============================ */

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

.capability-card {
    padding: 1.2rem 1.2rem 1.15rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-strong);
    box-shadow: var(--shadow);
    transition:
        transform 180ms ease,
        box-shadow 180ms ease,
        border-color 180ms ease,
        background 180ms ease;
}

.capability-card:hover {
    transform: translateY(-3px);
    background: var(--surface-hover);
    border-color: var(--border-strong);
}

.capability-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.85rem;
}

.capability-title-row {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.capability-title-row h3 {
    margin: 0;
    font-size: var(--fs-h3);
    letter-spacing: -0.03em;
}

.capability-summary {
    margin: 0;
    color: var(--muted-strong);
    font-size: 1rem;
    line-height: 1.7;
}

.capability-details {
    display: grid;
    grid-template-rows: 0fr;
    opacity: 0;
    margin-top: 0;
    transition:
        grid-template-rows 200ms ease,
        opacity 200ms ease,
        margin-top 200ms ease;
}

.capability-details>p {
    overflow: hidden;
    margin: 0;
    color: var(--muted);
    font-size: 0.98rem;
    line-height: 1.72;
}

.capability-card.is-open .capability-details {
    grid-template-rows: 1fr;
    opacity: 1;
    margin-top: 0.8rem;
}

.card-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    border: 0;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    padding: 0.2rem;
    font: inherit;
    transition: color 160ms ease;
}

.card-toggle:hover {
    color: var(--text);
}

.card-toggle i {
    width: 16px;
    height: 16px;
    transition: transform 180ms ease;
}

.card-toggle[aria-expanded="true"] i {
    transform: rotate(45deg);
}

/* ============================
   11) Icon Blocks
   ============================ */

.capability-icon,
.value-icon,
.feature-icon {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
}

.capability-icon i,
.value-icon i,
.feature-icon i {
    width: 18px;
    height: 18px;
    stroke-width: 2.2;
}

.capability-icon-blue,
.feature-icon-blue {
    background: rgba(45, 87, 217, 0.12);
    color: var(--blue);
}

.capability-icon-violet,
.feature-icon-violet {
    background: rgba(122, 90, 248, 0.13);
    color: var(--violet);
}

.capability-icon-amber,
.feature-icon-amber {
    background: rgba(212, 138, 16, 0.14);
    color: var(--amber);
}

.capability-icon-emerald {
    background: rgba(16, 147, 111, 0.14);
    color: var(--emerald);
}

.value-icon-rose {
    background: rgba(214, 79, 114, 0.13);
    color: var(--rose);
}

.value-icon-sky {
    background: rgba(63, 122, 224, 0.13);
    color: var(--sky);
}

.value-icon-gold {
    background: rgba(197, 138, 22, 0.13);
    color: var(--gold);
}

/* ============================
   12) Values
   ============================ */

.values {
    padding-top: 1rem;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1.2rem;
}

.value-card {
    padding: 1.15rem 1rem 1rem;
    border-radius: var(--radius-sm);
    background: transparent;
    border: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
    transition:
        transform 180ms ease,
        background 180ms ease,
        border-color 180ms ease;
}

.value-card:hover {
    transform: translateY(-2px);
    background: color-mix(in srgb, var(--surface-soft) 80%, transparent);
    border-color: var(--border);
}

.value-card h4 {
    margin: 0.85rem 0 0.35rem;
    font-size: 1.02rem;
    letter-spacing: -0.02em;
}

.value-card p {
    margin: 0;
    color: var(--muted);
    line-height: 1.68;
}

/* ============================
   13) Portfolio Intro
   ============================ */

.portfolio-intro {
    padding-top: 2rem;
    padding-bottom: 2.5rem;
}

.portfolio-feature-panel {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
    gap: 1.25rem;
    align-items: stretch;
    padding: 1.35rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background:
        linear-gradient(180deg, color-mix(in srgb, var(--surface) 92%, transparent), var(--surface-strong)),
        radial-gradient(circle at top right, rgba(45, 87, 217, 0.07), transparent 36%);
    box-shadow: var(--shadow);
}

.portfolio-feature-copy {
    display: grid;
    gap: 0.65rem;
    align-content: start;
}

.panel-kicker {
    margin: 0;
}

.portfolio-feature-copy h3 {
    margin: 0;
    max-width: 24ch;
    font-size: clamp(1.45rem, 2vw, 1.9rem);
    line-height: 1.12;
    letter-spacing: -0.03em;
}

.portfolio-feature-copy p {
    margin: 0;
    max-width: 40rem;
    color: var(--muted);
    line-height: 1.75;
}

.portfolio-feature-points {
    display: grid;
    gap: 0.85rem;
    align-content: start;
}

.feature-point {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 0.85rem;
    align-items: start;
    padding: 0.9rem 0.95rem;
    border: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
    border-radius: 18px;
    background: color-mix(in srgb, var(--surface-soft) 85%, transparent);
    transition:
        transform 180ms ease,
        background 180ms ease,
        border-color 180ms ease;
}

.feature-point:hover {
    transform: translateY(-2px);
    background: color-mix(in srgb, var(--surface-strong) 92%, transparent);
    border-color: var(--border);
}

.feature-point h4 {
    margin: 0 0 0.2rem;
    font-size: 1rem;
    letter-spacing: -0.02em;
}

.feature-point p {
    margin: 0;
    color: var(--muted);
    line-height: 1.6;
}

/* ============================
   14) Featured Projects
   ============================ */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.2rem;
}

.project-card {
    display: grid;
    grid-template-rows: auto 1fr;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--surface-strong);
    box-shadow: var(--shadow);
    transition:
        transform 200ms ease,
        box-shadow 200ms ease,
        border-color 200ms ease,
        background 200ms ease;
}

.project-card:hover {
    transform: translateY(-4px);
    background: var(--surface-hover);
    border-color: var(--border-strong);
}

.project-card:first-child {
    grid-column: span 2;
}

.project-image {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    background: var(--bg-alt);
}

.project-content {
    padding: 1.2rem;
    display: grid;
    gap: 0.6rem;
}

.project-content h3 {
    margin: 0;
    font-size: 1.25rem;
    letter-spacing: -0.03em;
}

.project-description {
    margin: 0;
    color: var(--muted);
    line-height: 1.65;
}

.project-features {
    margin-top: 0.6rem;
    display: grid;
    gap: 0.3rem;
}

.project-features li {
    position: relative;
    padding-left: 1rem;
    list-style: none;
    font-size: 0.9rem;
    color: var(--muted);
}

.project-features li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--text);
    opacity: 0.4;
}

/* ============================
   15) Special Project
   ============================ */

.special-project-card {
    display: grid;
    grid-template-columns: minmax(320px, 1fr) minmax(0, 0.95fr);
    gap: 1.25rem;
    align-items: center;
    padding: 1.2rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-strong);
    box-shadow: var(--shadow);
}

.special-project-media img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    border-radius: calc(var(--radius) - 8px);
}

.special-project-copy {
    display: grid;
    gap: 0.7rem;
}

.special-project-copy h3 {
    margin: 0;
    font-size: clamp(1.45rem, 2vw, 1.85rem);
    letter-spacing: -0.03em;
}

.special-project-copy p {
    margin: 0;
    color: var(--muted);
    line-height: 1.72;
}

.special-project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    width: fit-content;
    margin-top: 0.35rem;
    padding: 0.75rem 0.95rem;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--surface-soft) 85%, transparent);
    color: var(--text);
    font-size: 0.95rem;
    font-weight: 600;
    transition:
        transform 180ms ease,
        background 180ms ease,
        border-color 180ms ease,
        color 180ms ease;
}

.special-project-link:hover {
    transform: translateY(-1px);
    background: color-mix(in srgb, var(--surface-strong) 95%, transparent);
    border-color: var(--border-strong);
}

.special-project-link i {
    width: 16px;
    height: 16px;
    stroke-width: 2.1;
}

/* ============================
   16) Branding Feature
   ============================ */

.branding {
    padding-top: 2.5rem;
}

.branding-panel {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
    gap: 1.4rem;
    align-items: center;
    padding: 1.35rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background:
        linear-gradient(180deg, color-mix(in srgb, var(--surface) 92%, transparent), var(--surface-strong)),
        radial-gradient(circle at top left, rgba(197, 138, 22, 0.08), transparent 34%);
    box-shadow: var(--shadow);
}

.branding-copy {
    display: grid;
    gap: 0.55rem;
}

.branding-copy h2 {
    margin: 0;
    max-width: 20ch;
    font-family: "Playfair Display", serif;
    font-size: clamp(2rem, 3vw, 2.85rem);
    line-height: 1.03;
    letter-spacing: -0.03em;
}

.branding-tagline {
    margin: 0 0 0.25rem;
    color: var(--warm-brown);
    font-style: italic;
    font-size: 1.02rem;
}

.branding-body {
    display: grid;
    gap: 0.95rem;
    max-width: 40rem;
}

.branding-body p {
    margin: 0;
    color: var(--muted);
    line-height: 1.75;
}

.branding-media {
    border-radius: calc(var(--radius) - 4px);
    overflow: hidden;
    border: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
    background: color-mix(in srgb, var(--surface-soft) 85%, transparent);
}

.branding-media img {
    width: 100%;
    aspect-ratio: 16 / 12;
    object-fit: cover;
}

/* ============================
   17) Static Sites
   ============================ */

.static-sites {
    padding-top: 2.75rem;
}

.static-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1.35rem;
}

.static-card {
    padding: 1.1rem 1rem;
    border: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
    border-radius: 18px;
    background: color-mix(in srgb, var(--surface-soft) 88%, transparent);
    transition:
        transform 180ms ease,
        background 180ms ease,
        border-color 180ms ease;
}

.static-card:hover {
    transform: translateY(-2px);
    background: color-mix(in srgb, var(--surface-strong) 95%, transparent);
    border-color: var(--border);
}

.static-card h3 {
    margin: 0 0 0.35rem;
    font-size: 1.05rem;
    letter-spacing: -0.02em;
}

.static-card p {
    margin: 0;
    color: var(--muted);
    line-height: 1.65;
    font-size: 0.96rem;
}

/* ============================
   18) Sunset
   ============================ */

.sunset-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 1.5rem;
}

.sunset-card {
    display: grid;
    grid-template-columns: 90px 1fr;
    gap: 0.9rem;
    align-items: center;
    padding: 0.8rem;
    border-radius: 16px;
    border: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
    background: color-mix(in srgb, var(--surface-soft) 75%, transparent);
    transition:
        transform 180ms ease,
        background 180ms ease,
        border-color 180ms ease;
}

.sunset-card:hover {
    transform: translateY(-2px);
    background: color-mix(in srgb, var(--surface-strong) 90%, transparent);
    border-color: var(--border);
}

.sunset-card img {
    width: 100%;
    border-radius: 10px;
    aspect-ratio: 1 / 1;
    object-fit: cover;
}

.sunset-card h4 {
    margin: 0 0 0.2rem;
    font-size: 1rem;
}

.sunset-card p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--muted);
}

/* ============================
   19) Footer / Contact
   ============================ */

.site-footer {
    padding: 3rem 0 4.5rem;
}

.footer-shell {
    display: grid;
    gap: 1.5rem;
    padding: 1.5rem 1.35rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background:
        linear-gradient(180deg, color-mix(in srgb, var(--surface) 92%, transparent), var(--surface-strong)),
        radial-gradient(circle at top right, rgba(45, 87, 217, 0.06), transparent 34%);
    box-shadow: var(--shadow);
    text-align: center;
}

.footer-copy h2 {
    margin: 0.3rem 0 0.6rem;
    font-family: "Playfair Display", serif;
    font-size: clamp(2rem, 3vw, 2.75rem);
    line-height: 1.04;
    letter-spacing: -0.03em;
}

.footer-copy p:last-child {
    margin: 0;
    max-width: 34rem;
    margin-inline: auto;
    color: var(--muted);
    line-height: 1.72;
}

.footer-social {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.9rem;
    flex-wrap: wrap;
    margin-top: 0.35rem;
}

.footer-social a {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-pill);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text);
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--surface) 92%, transparent);
    transition:
        transform 180ms ease,
        background 180ms ease,
        border-color 180ms ease,
        color 180ms ease,
        box-shadow 180ms ease;
}

.footer-social a:hover {
    transform: translateY(-2px);
    background: color-mix(in srgb, var(--surface-hover) 96%, transparent);
    border-color: var(--border-strong);
    box-shadow: var(--shadow-icon);
}

.footer-social a i {
    font-size: 1.08rem;
    line-height: 1;
}

.footer-social a[aria-label="Email"] i {
    font-size: 0.98rem;
}

.footer-social a[aria-label="LinkedIn"] i {
    font-size: 0.95rem;
}

.footer-social a[aria-label="GitHub"] i {
    font-size: 1.02rem;
}

.footer-social a:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: 3px;
}

/* ============================
   20) Responsive
   ============================ */

@media (max-width: 920px) {
    .hero-shell {
        grid-template-columns: 1fr;
    }

    .hero-copy {
        padding-top: 1.25rem;
    }

    .hero-image-frame {
        max-width: 360px;
        margin: 0 auto;
    }

    .portfolio-feature-panel,
    .branding-panel {
        grid-template-columns: 1fr;
    }

    .project-card:first-child {
        grid-column: auto;
    }
}

@media (max-width: 900px) {

    .capability-grid,
    .values-grid,
    .static-grid,
    .sunset-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .capability-top {
        flex-direction: column;
        align-items: flex-start;
    }

    .card-toggle {
        padding-left: 0;
    }

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

@media (max-width: 640px) {
    .hero {
        padding: 3.5rem 0 2.75rem;
    }

    .hero h1 {
        max-width: none;
    }

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

    .button {
        width: 100%;
    }

    .nav-shell {
        width: min(calc(100% - 1.25rem), var(--container));
        align-items: flex-start;
        flex-direction: column;
        gap: 0.9rem;
        border-radius: 24px;
    }

    .nav-links {
        flex-wrap: wrap;
        gap: 0.9rem 1.1rem;
    }

    .container,
    .container.narrow,
    .container.wide {
        width: min(calc(100% - 1.25rem), var(--container));
    }
}

/* dark mode toggle */
.theme-toggle {
    width: 42px;
    height: 42px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--surface) 92%, transparent);
    color: var(--text);
    cursor: pointer;
    transition:
        transform 180ms ease,
        background 180ms ease,
        border-color 180ms ease,
        color 180ms ease,
        box-shadow 180ms ease;
}

.theme-toggle:hover {
    transform: translateY(-1px);
    background: color-mix(in srgb, var(--surface-hover) 96%, transparent);
    border-color: var(--border-strong);
    box-shadow: var(--shadow-soft);
}

.theme-toggle i {
    font-size: 1rem;
    line-height: 1;
}

@media (max-width: 640px) {
    .theme-toggle {
        width: 40px;
        height: 40px;
    }
}