* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    list-style: none;
    text-decoration: none;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

/* ===== Design tokens ===== */
:root {
    --bg-color: #0b0e11;
    --border-color: #262d34;

    --primary-color: #ffb454;
    /* warm amber — terminal signature accent */
    --tertiary-color: #7ee8c8;
    /* muted mint — secondary accent only */
    --icon-color: #9aa5ad;

    /* Transparent "glass" surfaces so the particle background shows through */
    --glass-bg: rgba(18, 22, 27, 0.45);
    --glass-inner: rgba(11, 14, 17, 0.35);
    --glass-border: rgba(255, 255, 255, 0.09);
    --glass-blur: blur(12px);

    --text-on-bg: #e8ecef;
    --text-on-surface: #8b96a1;
    --text-on-primary: #1c1204;

    --display-font: "Space Grotesk", "Inter", sans-serif;
    --body-font: "Inter", sans-serif;
    --mono-font: "IBM Plex Mono", "Courier New", monospace;
}

[data-theme="light"] {
    --bg-color: #f7f5f1;
    --border-color: #d9d3c7;

    --primary-color: #b5590a;
    --tertiary-color: #0d7a63;
    --icon-color: #4a4238;

    --glass-bg: rgba(255, 255, 255, 0.5);
    --glass-inner: rgba(255, 255, 255, 0.4);
    --glass-border: rgba(80, 65, 40, 0.16);

    --text-on-bg: #1a1712;
    --text-on-surface: #5c5548;
    --text-on-primary: #ffffff;
}

body {
    overflow-x: hidden;
    overflow-x: clip;
    background-color: var(--bg-color);
    color: var(--text-on-bg);
    font-family: var(--body-font);
    line-height: 1.6;
    transition:
        background-color 0.3s ease,
        color 0.3s ease;
}

/* Site-wide animated background: fixed behind all content, non-interactive */
.site-particles {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* Blinking Cursor */
.cursor {
    display: inline-block;
    width: 3px;
    height: 1em;
    background-color: var(--primary-color);
    margin-left: 5px;
    animation: blink 0.8s infinite;
    vertical-align: middle;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

/* Layout Containers */
section {
    max-width: 900px;
    margin: 0 auto;
    padding: 60px 20px;
}

h1, h2, h3 {
    font-family: var(--display-font);
    font-weight: 600;
}

/* ===== Hero ===== */
.hd-about {
    margin-top: 10px;
    margin-bottom: 48px;
    min-height: 78vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

.hero-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.hero-text {
    flex: 1 1 auto;
    min-width: 0;
}

.hero-hello {
    font-family: var(--mono-font);
    font-size: 1rem;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.hd-about h1 {
    font-size: clamp(2.8rem, 6.5vw, 4.6rem);
    line-height: 1.05;
    letter-spacing: -1.5px;
    margin: 0 0 14px;
}

/* Gradient name */
.nm-spn {
    background: linear-gradient(100deg, var(--primary-color) 0%, var(--tertiary-color) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.hero-role {
    font-size: 1.5rem;
    font-weight: 400;
    font-family: var(--body-font);
    color: var(--text-on-surface);
    min-height: 1.6em;
}

.hero-role #changing-txt {
    color: var(--text-on-bg);
    font-weight: 600;
}

.hero-sub {
    margin: 20px 0 30px;
    max-width: 46ch;
    font-size: 1.02rem;
    color: var(--text-on-surface);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.hero-actions .view-btn {
    padding: 12px 28px;
    font-size: 0.9rem;
}

/* ---- Orbit visual ---- */
.hero-visual {
    position: relative;
    flex: 0 0 340px;
    width: 340px;
    height: 340px;
    overflow: hidden;
    overflow: clip;
}

.hero-glow {
    position: absolute;
    inset: 12%;
    border-radius: 50%;
    background: radial-gradient(circle, var(--primary-color) 0%, transparent 68%);
    opacity: 0.16;
    filter: blur(24px);
}

.orbit {
    position: absolute;
    border: 1px dashed var(--border-color);
    border-radius: 50%;
    animation: hero-spin 28s linear infinite;
}

.orbit-outer {
    inset: 10%; /* leaves room inside the box for the icon chips */
}

.orbit-inner {
    inset: 30%;
    animation-duration: 20s;
    animation-direction: reverse;
    border-color: var(--primary-color);
    border-style: dotted;
    opacity: 0.9;
}

.chip-wrap {
    position: absolute;
    inset: 0;
    transform: rotate(var(--a));
}

.chip {
    position: absolute;
    top: 0;
    left: 50%;
    width: 46px;
    height: 46px;
    transform: translate(-50%, -50%) rotate(calc(-1 * var(--a)));
}

.chip-sm {
    width: 38px;
    height: 38px;
}

/* Counter-rotate so icons stay upright while the orbit spins */
.chip-in {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background-color: var(--glass-inner);
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 20px -8px rgba(0, 0, 0, 0.5);
    color: var(--primary-color);
    font-size: 1.1rem;
    animation: hero-spin 28s linear infinite reverse;
}

.orbit-inner .chip-in {
    animation-duration: 20s;
    animation-direction: normal;
    color: var(--tertiary-color);
    font-size: 0.95rem;
}

.hero-hex {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120px;
    height: 120px;
    margin: -60px 0 0 -60px;
    filter: drop-shadow(0 0 14px var(--primary-color));
    animation: hero-spin 16s linear infinite;
}

.hh-outer { fill: none; stroke: var(--primary-color); stroke-width: 3; }
.hh-inner { fill: none; stroke: var(--tertiary-color); stroke-width: 1.8; opacity: 0.8; }
.hh-core  { fill: var(--primary-color); animation: hero-core 2s ease-in-out infinite; transform-origin: 80px 80px; }

@keyframes hero-spin {
    to { transform: rotate(360deg); }
}

@keyframes hero-core {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%      { opacity: 0.55; transform: scale(0.8); }
}

/* ---- Scroll cue ---- */
.hero-scroll {
    align-self: center;
    margin-top: 40px;
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-on-surface);
    border-radius: 14px;
    display: flex;
    justify-content: center;
    padding-top: 7px;
    opacity: 0.7;
}

.hero-scroll span {
    width: 3px;
    height: 8px;
    border-radius: 2px;
    background-color: var(--primary-color);
    animation: hero-scroll 1.6s ease-in-out infinite;
}

@keyframes hero-scroll {
    0%   { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(14px); opacity: 0; }
}

/* About Section */
.about-main-h {
    font-size: 2.4rem;
    margin-bottom: 20px;
}

.about-main-p {
    font-size: 1.08rem;
    color: var(--text-on-surface);
    margin-bottom: 15px;
    max-width: 58ch;
}

.about-content {
    margin-top: 40px;
}

.about-text {
    max-width: 600px;
}

.about-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 30px;
}

/* About Section Tech Stack Pills */
.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
    margin-bottom: 8px;
}

.stack-pill {
    background-color: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    color: var(--text-on-surface);
    text-align: center;
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    font-family: var(--mono-font);
    transition: all 0.25s ease;
}

.stack-pill:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* ===== Skills — command list, not repeated cards ===== */
.skills-dv {
    background-color: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 8px 32px 20px;
}

.skills-main {
    font-size: 1.9rem;
    padding: 24px 0 16px;
    border-bottom: 1px solid var(--border-color);
}

.skills-list {
    padding-top: 6px;
}

.skill-row {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 18px 0;
    border-bottom: 1px solid var(--border-color);
}

.skill-row:last-child {
    border-bottom: none;
}

.skill-row > i {
    flex: 0 0 auto;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background-color: var(--glass-inner);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.05rem;
}

.skill-row-text h3 {
    font-size: 1.05rem;
    margin-bottom: 3px;
}

.skill-row-text p {
    font-size: 0.88rem;
    color: var(--text-on-surface);
    font-family: var(--mono-font);
}

/* Projects Layout */
.projects {
    background-color: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.projects h2 {
    font-size: 1.9rem;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
}

.pj-spn {
    display: block;
    font-weight: 400;
    font-size: 0.9rem;
    color: var(--text-on-surface);
    margin-top: 8px;
}

.proj-ul li {
    margin-top: 20px;
}

.proj-ul li:first-child {
    margin-top: 0;
}

.proj-card {
    display: flex;
    align-items: stretch;
    min-width: 0;
    background-color: var(--glass-inner);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    overflow: hidden;
}

.proj-img {
    display: block;
    flex: 1 1 220px;
    min-width: 140px;
    max-width: 220px;
    height: auto;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    background-color: var(--glass-inner);
    border-right: 1px solid var(--border-color);
}

.proj-body {
    flex: 3 1 320px;
    min-width: 0;
    padding: 20px 22px;
}

.proj-body h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.15rem;
    font-family: var(--display-font);
}

.proj-body h3 i {
    font-size: 0.9rem;
    color: var(--primary-color);
}

.proj-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
}

.proj-links .view-btn {
    font-size: 0.78rem;
    padding: 9px 18px;
}

/* Experience & Timeline */
.timeline-wrap {
    background-color: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.timeline-h2 {
    font-size: 1.9rem;
    margin-bottom: 28px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
}

.timeline {
    margin-left: 10px;
    padding-left: 30px;
    border-left: 2px solid var(--border-color);
}

.timeline-item {
    position: relative;
    padding-bottom: 30px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -37px;
    top: 4px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--primary-color);
    box-shadow: 0 0 0 4px var(--bg-color);
}

.timeline-date {
    display: inline-block;
    font-family: var(--mono-font);
    font-size: 0.82rem;
    color: var(--primary-color);
    margin-bottom: 6px;
}

.timeline-content h3 {
    font-size: 1.2rem;
    margin-bottom: 6px;
}

.timeline-content p {
    font-size: 0.95rem;
    color: var(--text-on-surface);
}

/* Certificates Layout */
.courses {
    background-color: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.cc_h2 {
    font-size: 1.9rem;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 6px;
}

.course-cert {
    position: relative;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 10px 18px;
    margin-top: 15px;
    padding: 18px 20px 18px 26px;
    background-color: var(--glass-inner);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: border-color 0.25s ease;
}

/* Same amber-to-mint rule as the hero text */
.course-cert::before {
    content: "";
    position: absolute;
    left: 10px;
    top: 16px;
    bottom: 16px;
    width: 3px;
    border-radius: 3px;
    background: linear-gradient(to bottom, var(--primary-color), var(--tertiary-color));
    opacity: 0.85;
}

.course-cert:hover {
    border-color: var(--primary-color);
}

.cert-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background-color: var(--glass-inner);
    border: 1px solid var(--border-color);
    color: var(--primary-color);
    font-size: 1.1rem;
}

.cert-info {
    min-width: 0;
}

.cert-info h3 {
    font-size: 1.1rem;
    margin-bottom: 2px;
}

.cert-issuer {
    font-size: 0.9rem;
    color: var(--text-on-surface);
}

.cert-date {
    display: inline-block;
    margin-top: 10px;
    padding: 2px 10px;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    font-family: var(--mono-font);
    font-size: 0.78rem;
    color: var(--tertiary-color);
}

/* Certificate button takes the card's accent colour */
.course-cert .view-btn {
    border-color: var(--primary-color);
    color: var(--primary-color);
    white-space: nowrap;
}

.course-cert .view-btn:hover {
    background-color: var(--primary-color);
    color: var(--text-on-primary);
}

/* Extra courses collapse */
.course-cert-extra {
    display: grid;
    grid-template-rows: 0fr;
    opacity: 0;
    visibility: hidden; /* keeps hidden links out of the keyboard tab order */
    transition:
        grid-template-rows 0.4s ease,
        opacity 0.3s ease,
        visibility 0s linear 0.4s;
}

.course-cert-extra.open {
    grid-template-rows: 1fr;
    opacity: 1;
    visibility: visible;
    transition-delay: 0s;
}

.course-cert-extra>div {
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.courses-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    margin-top: 20px;
    border: 1px solid var(--border-color);
    background-color: var(--glass-inner);
    color: var(--primary-color);
    cursor: pointer;
    font-family: var(--mono-font);
}

.courses-toggle-btn:hover {
    background-color: var(--primary-color);
    color: var(--text-on-primary);
    border-color: var(--primary-color);
}

/* Buttons */
.view-btn {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-on-bg);
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.82rem;
    font-family: var(--body-font);
    transition: all 0.2s ease;
    display: inline-block;
    text-align: center;
}

.view-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* Filled variant for primary calls-to-action */
.view-btn-accent {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--text-on-primary);
}

.view-btn-accent:hover {
    background-color: transparent;
    color: var(--primary-color);
}


/* Contact Section */
#contact {
    text-align: center;
    border-top: 1px solid var(--border-color);
    padding-bottom: 120px;
}

#contact h2 {
    font-size: 2.2rem;
    margin-bottom: 30px;
}

.contact-icon {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 60px;
}

.contact-icon a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    color: var(--text-on-bg);
    transition: all 0.25s ease;
}

.contact-icon a i {
    font-size: 1.6rem;
    color: var(--text-on-bg);
    transition: color 0.25s ease;
}

.contact-icon a:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-4px);
}

.contact-icon a:hover i {
    color: var(--text-on-primary);
}

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition:
        opacity 0.7s ease-out var(--reveal-delay, 0s),
        transform 0.8s cubic-bezier(0.22, 1, 0.36, 1) var(--reveal-delay, 0s);
    will-change: opacity, transform;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.connect {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    border-radius: 12px;
    padding: 28px 30px;
    background-color: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    text-align: left;
}

.idea {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.idea p {
    color: var(--text-on-surface);
}

.connect h3 {
    font-size: 1.4rem;
}


/* Navigation Bar */
.nav-bar {
    position: fixed;
    bottom: calc(14px + env(safe-area-inset-bottom, 0px));
    left: 12px;
    right: 12px;
    margin-inline: auto;
    width: auto;
    max-width: 440px;
    display: flex;
    justify-content: space-between;
    gap: 4px;
    background-color: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    padding: 8px;
    border-radius: 26px;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
    z-index: 1000;
}

.nav-btn {
    flex: 1 1 0;
    min-width: 0;
    height: 54px;
    border-radius: 18px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
    color: var(--text-on-surface);
    transition: all 0.2s ease;
}

.nav-btn i {
    font-size: 1.15rem;
}

.nav-btn:hover {
    background-color: var(--primary-color);
    color: var(--text-on-primary);
}

/* Desktop-only pieces of the top bar (hidden on phones) */
.nav-logo,
.nav-btn-desktop {
    display: none;
}

.nav-label {
    font-family: var(--mono-font);
    font-size: 0.62rem;
    line-height: 1;
}

/* Section currently in view (set by script.js) */
.nav-btn[aria-current="true"] {
    background-color: var(--primary-color);
    color: var(--text-on-primary);
}

/* Theme Toggle Button */
#theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    color: var(--icon-color);
    background-color: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    transition:
        transform 0.3s ease,
        background-color 0.3s ease;
    z-index: 1000;
}

#theme-toggle:hover {
    transform: rotate(45deg);
    border-color: var(--primary-color);
}

#theme-toggle i {
    font-size: 1.2rem;
    color: var(--text-on-bg);
}

/* Scroll-to-Top Button */
.scroll-top-btn {
    position: fixed;
    bottom: 30px;
    right: 20px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    color: var(--icon-color);
    background-color: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease, background-color 0.3s ease, visibility 0.3s ease;
    z-index: 999;
}

.scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top-btn:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.scroll-top-btn i {
    font-size: 1.05rem;
    color: var(--text-on-bg);
    transition: color 0.3s ease;
}

.scroll-top-btn:hover i {
    color: var(--text-on-primary);
}

/* Footer */
.site-footer {
    text-align: center;
    padding: 24px 20px 100px;
    font-family: var(--mono-font);
    font-size: 0.82rem;
    color: var(--text-on-surface);
    border-top: 1px solid var(--border-color);
}

/* Focus visibility for keyboard users */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 3px;
}

/* Respect users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .cursor,
    .orbit,
    .chip-in,
    .hero-hex,
    .hh-core,
    .hero-scroll span,
    .reveal {
        animation: none;
        transition: none;
        opacity: 1;
        transform: none;
    }
}

/* Responsive Rules */

/* Desktop & tablet (768px+): simple full-width top bar —
   logo on the left, text links in the middle, theme toggle on the right */
@media (min-width: 768px) {
    main {
        padding-top: 68px; /* keep the first section clear of the bar */
    }

    html {
        scroll-padding-top: 88px; /* anchor links land below the bar */
    }

    .nav-bar {
        top: 0;
        bottom: auto;
        left: 0;
        right: 0;
        margin-inline: 0;
        width: 100%;
        max-width: none;
        height: 68px;
        flex-direction: row;
        align-items: center;
        justify-content: center;
        gap: 16px;
        padding: 0 24px;
        border: none;
        border-bottom: 1px solid var(--border-color);
        border-radius: 0;
        box-shadow: none;
        background-color: var(--bg-color);
        background-color: color-mix(in srgb, var(--bg-color) 60%, transparent);
        -webkit-backdrop-filter: blur(10px);
        backdrop-filter: blur(10px);
    }

    .nav-logo {
        display: block;
        position: absolute;
        left: 24px;
        top: 50%;
        transform: translateY(-50%);
        font-family: var(--mono-font);
        font-weight: 700;
        font-size: 1.3rem;
        color: var(--text-on-bg);
        letter-spacing: -0.5px;
    }

    /* Plain text links: no icons, no pills */
    .nav-btn,
    .nav-btn-desktop {
        display: inline-block;
        width: auto;
        height: auto;
        flex: none;
        padding: 6px 2px;
        border-radius: 0;
        background: none;
        color: var(--text-on-surface);
    }

    .nav-btn i {
        display: none;
    }

    .nav-label {
        display: inline;
        font-family: var(--mono-font);
        font-size: 0.8rem;
    }

    .nav-btn:hover,
    .nav-btn[aria-current="true"] {
        background: none;
        color: var(--primary-color);
    }

    .nav-btn[aria-current="true"] {
        box-shadow: inset 0 -2px 0 var(--primary-color);
    }

    /* Theme toggle sits inside the bar, on the right */
    #theme-toggle {
        top: 11px;
        right: 24px;
    }

    /* Bottom nav is gone, so the scroll-to-top button returns to the corner */
    .scroll-top-btn {
        bottom: 30px;
        right: 24px;
    }
}

/* Roomier bar on larger screens */
@media (min-width: 1024px) {
    .nav-bar {
        gap: 28px;
        padding: 0 60px;
    }

    .nav-logo {
        left: 60px;
    }

    #theme-toggle {
        right: 60px;
    }
}

/* ===== Phones (up to 767px) ===== */
@media (max-width: 767px) {
    section {
        padding: 28px 16px;
    }

    #theme-toggle {
        top: 14px;
        right: 14px;
        width: 42px;
        height: 42px;
    }

    .scroll-top-btn {
        bottom: calc(92px + env(safe-area-inset-bottom, 0px));
        right: 16px;
    }

    /* ---- Hero (phones) ----
       Big animated logo on top, left-aligned text underneath with a
       gradient rule down its left edge. */
    .hd-about {
        min-height: 0;
        margin: 0;
        padding-top: 20px;
    }

    .hero-inner {
        flex-direction: column-reverse;
        align-items: stretch;
        gap: 22px;
    }

    .hero-text {
        position: relative;
        padding-left: 18px;
    }

    /* gradient rule down the left edge of the text block */
    .hero-text::before {
        content: "";
        position: absolute;
        left: 0;
        top: 6px;
        bottom: 6px;
        width: 2px;
        border-radius: 2px;
        background: linear-gradient(to bottom, var(--primary-color), var(--tertiary-color));
        opacity: 0.85;
    }

    /* Logo: nearly full width (was 150-190px), keeps all five icons */
    .hero-visual {
        align-self: center;
        flex: none;
        width: clamp(250px, 82vw, 320px);
        height: clamp(250px, 82vw, 320px);
    }

    .hero-hex {
        width: 92px;
        height: 92px;
        margin: -46px 0 0 -46px;
    }

    .hero-hello::before {
        content: "> ";
        color: var(--tertiary-color);
    }

    .hero-hello {
        font-size: 0.95rem;
        margin-bottom: 6px;
    }

    .hd-about h1 {
        font-size: clamp(2.9rem, 15vw, 3.8rem);
        line-height: 1;
        letter-spacing: -1.5px;
        margin: 0 0 16px;
    }

    .hero-role {
        font-family: var(--mono-font);
        font-size: 1rem;
    }

    .hero-sub {
        margin: 18px 0 26px;
        max-width: none;
        font-size: 0.95rem;
    }

    .hero-actions {
        flex-wrap: nowrap;
        gap: 10px;
    }

    .hero-actions .view-btn {
        flex: 1;
        padding: 14px 8px;
    }

    .hero-scroll {
        display: none;
    }

    /* About: left-aligned paragraphs read better than centred ones */
    .about-content {
        margin-top: 32px;
    }

    .about-main-h {
        font-size: 1.7rem;
    }

    .about-main-p {
        font-size: 1rem;
        max-width: none;
    }

    .about-actions .view-btn {
        width: 100%;
        padding: 14px;
    }

    /* Cards */
    .projects,
    .skills-dv,
    .timeline-wrap,
    .courses,
    .connect {
        padding: 20px;
        border-radius: 18px;
    }

    .skills-dv {
        padding-top: 4px;
        padding-bottom: 8px;
    }

    .skills-main,
    .projects h2,
    .timeline-h2,
    .cc_h2 {
        font-size: 1.5rem;
    }

    .skill-row {
        gap: 16px;
        padding: 14px 0;
    }

    /* Projects: swipeable carousel with the next card peeking in */
    .proj-ul {
        display: flex;
        gap: 14px;
        margin: 0 -20px;
        padding: 2px 20px 6px;
        overflow-x: auto;
        overflow-y: hidden;
        scroll-snap-type: x mandatory;
        scroll-padding-inline: 20px;
        scrollbar-width: none;
    }

    .proj-ul::-webkit-scrollbar {
        display: none;
    }

    .proj-ul li,
    .proj-ul li:first-child {
        flex: 0 0 86%;
        display: flex;
        margin: 0;
        scroll-snap-align: start;
    }

    .proj-card {
        flex-direction: column;
        width: 100%;
    }

    .proj-img {
        flex-basis: auto;
        width: 100%;
        min-width: 0;
        max-width: none;
        aspect-ratio: 16 / 10;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .proj-body {
        display: flex;
        flex-direction: column;
        flex: 1 1 auto;
        padding: 16px;
    }

    .proj-links {
        margin-top: auto;
        padding-top: 16px;
    }

    .proj-links .view-btn {
        flex: 1;
        text-align: center;
    }

    .course-cert {
        grid-template-columns: auto 1fr;
        padding: 16px 16px 16px 24px;
    }

    .course-cert .view-btn {
        grid-column: 1 / -1;
        width: 100%;
    }

    /* Contact */
    .connect {
        flex-direction: column;
        align-items: stretch;
    }

    .connect .view-btn {
        width: 100%;
        padding: 14px;
    }

    #contact {
        text-align: left;
        padding-bottom: 110px;
    }

    .site-footer {
        text-align: left;
    }

    .contact-icon {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 12px;
        margin-top: 36px;
    }

    .contact-icon a {
        width: auto;
        height: 56px;
        border-radius: 16px;
    }
}