:root {
    --bg-color: #f4f7f9;
    --surface: #ffffff;
    --text-color: #1a1a1a;
    --text-light: #7a8a9a;
    --accent-color: #5a7d95;
    /* subtle slate/muted blue */
    --accent-light: #a3b8c5;
    --border: #dee6ed;
    --card-bg: #ffffff;
    --hero-bg: #ebf0f3;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Playfair Display', serif;
    --transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    --theme-toggle-bg: rgba(90, 125, 149, 0.12);
    --logo-filter: invert(48%) sepia(13%) saturate(1184%) hue-rotate(162deg) brightness(95%) contrast(88%);
}

[data-theme="dark"] {
    --bg-color: #0e1117;
    --surface: #161b22;
    --text-color: #e6edf3;
    --text-light: #8b949e;
    --accent-color: #7aaccc;
    --accent-light: #4d7a99;
    --border: #21262d;
    --card-bg: #161b22;
    --hero-bg: #0d1117;
    --theme-toggle-bg: rgba(122, 172, 204, 0.12);
    --logo-filter: invert(75%) sepia(21%) saturate(746%) hue-rotate(164deg) brightness(92%) contrast(88%);
}

/* Smooth global theme transition */
body,
body *,
body *::before,
body *::after {
    transition:
        background-color 0.5s ease,
        color 0.4s ease,
        border-color 0.4s ease,
        box-shadow 0.4s ease;
}

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    line-height: 1.7;
    overflow-x: hidden;
    position: relative;
}

/* Subtle Techno Background Pattern */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    background-image:
        /* Staggered Dot Grid */
        radial-gradient(var(--accent-light) 0.5px, transparent 0.5px),
        radial-gradient(var(--accent-light) 0.5px, transparent 0.5px),
        /* Large Faint Grid */
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 40px 40px, 40px 40px, 160px 160px, 160px 160px;
    background-position: 0 0, 20px 20px, 0 0, 0 0;
    opacity: 0.25;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ── Loader ── */
.loader {
    position: fixed;
    inset: 0;
    background: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loader-content {
    font-family: var(--font-heading);
    font-size: 3rem;
    color: var(--accent-color);
    animation: pulse 1.5s infinite ease-in-out;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 0.5;
        transform: scale(0.95);
    }

    50% {
        opacity: 1;
        transform: scale(1);
    }
}

/* ── Header ── */
header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1rem 0;
    z-index: 1000;
    background: rgba(247, 245, 242, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
    gap: 1.5rem;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 2rem;
}

/* Nav toggle list item — vertically centers the button within the li */
.nav-toggle-item {
    display: flex;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    height: 64px;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    height: 64px;
}

.nav-initials {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--accent-color);
    font-weight: 700;
    letter-spacing: 1px;
    line-height: 1;
    margin-top: 2px;
    /* Subtle nudge for alignment */
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-light);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.12rem;
    padding: 0.4rem 0;
    position: relative;
    transition: var(--transition);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1.5px;
    background-color: var(--accent-color);
    transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.nav-links a:hover::after {
    width: 100%;
}

/* ── Hamburger ── */
.hamburger {
    display: none;
    cursor: pointer;
    z-index: 1001;
    flex-direction: column;
    gap: 6px;
}

.hamburger span {
    display: block;
    width: 30px;
    height: 2px;
    background-color: var(--accent-color);
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ── Hero ── */
#hero {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    background: var(--hero-bg);
    overflow: hidden;
}

/* Abstract Background Branding */
section {
    position: relative;
    overflow: hidden;
}

section::after {
    content: '';
    position: absolute;
    width: 120vmin;
    height: 120vmin;
    background: url('assets/logo.svg') no-repeat center / contain;
    opacity: 0.07;
    filter: invert(0.4) sepia(0.2) saturate(0.5);
    z-index: -1;
    pointer-events: none;
}

#hero::after {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(1.5);
    opacity: 0.74;
    transition: opacity 2s ease;
}

#hero.active::after {
    animation: logoReveal 2.5s cubic-bezier(0.16, 1, 0.3, 1) both;
}

#about::after {
    top: -20%;
    right: -20%;
    transform: rotate(15deg);
}

#projects::after {
    bottom: -30%;
    left: -20%;
    transform: rotate(-10deg);
}

#blogs::after {
    top: 40%;
    right: -30%;
    transform: rotate(45deg);
}

#contact::after {
    bottom: -10%;
    right: -10%;
    transform: rotate(-25deg);
}

/* ── Hero Geometric Accents ── */
.geo {
    position: absolute;
    pointer-events: none;
    z-index: 0;
}

.geo-circle-lg {
    width: 420px;
    height: 420px;
    border: 1px solid var(--accent-color);
    border-radius: 50%;
    opacity: 0.06;
    top: -30px;
    right: -100px;
    animation: geo-rotate 40s linear infinite;
}

.geo-circle-sm {
    width: 180px;
    height: 180px;
    border: 1px solid var(--accent-color);
    border-radius: 50%;
    opacity: 0.09;
    bottom: 15%;
    left: 6%;
    animation: geo-float 8s ease-in-out infinite;
}

.geo-ring {
    width: 600px;
    height: 600px;
    border: 1.5px dashed var(--accent-color);
    border-radius: 50%;
    opacity: 0.04;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: geo-rotate-reverse 60s linear infinite;
}

.geo-line-h {
    width: 200px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
    opacity: 0.15;
    top: 28%;
    left: 5%;
    animation: geo-fade 6s ease-in-out infinite;
}

.geo-line-v {
    width: 1px;
    height: 160px;
    background: linear-gradient(180deg, transparent, var(--accent-color), transparent);
    opacity: 0.12;
    top: 20%;
    right: 10%;
    animation: geo-fade 8s ease-in-out infinite 2s;
}

.geo-dot {
    width: 5px;
    height: 5px;
    background: var(--accent-color);
    border-radius: 50%;
}

.dot-1 {
    opacity: 0.25;
    top: 22%;
    left: 20%;
    animation: geo-pulse 4s ease-in-out infinite;
}

.dot-2 {
    opacity: 0.18;
    bottom: 28%;
    right: 18%;
    animation: geo-pulse 5s ease-in-out infinite 1.5s;
}

.dot-3 {
    opacity: 0.2;
    top: 65%;
    left: 38%;
    animation: geo-pulse 6s ease-in-out infinite 0.8s;
}

.geo-cross {
    width: 24px;
    height: 24px;
    opacity: 0.12;
    top: 38%;
    right: 18%;
}

.geo-cross::before,
.geo-cross::after {
    content: '';
    position: absolute;
    background: var(--accent-color);
}

.geo-cross::before {
    width: 100%;
    height: 1px;
    top: 50%;
    left: 0;
}

.geo-cross::after {
    width: 1px;
    height: 100%;
    left: 50%;
    top: 0;
}

@keyframes geo-rotate {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

@keyframes geo-rotate-reverse {
    from {
        transform: translate(-50%, -50%) rotate(0deg);
    }

    to {
        transform: translate(-50%, -50%) rotate(-360deg);
    }
}

@keyframes geo-float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-14px);
    }
}

@keyframes geo-fade {

    0%,
    100% {
        opacity: 0.05;
    }

    50% {
        opacity: 0.2;
    }
}

@keyframes geo-pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.2;
    }

    50% {
        transform: scale(2.5);
        opacity: 0.08;
    }
}


.hero-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-logo-wrapper {
    width: 150px;
    height: 150px;
    margin-bottom: 1.5rem;
    opacity: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

#hero.active .hero-logo-wrapper {
    animation: fadeInUp 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
}

.hero-logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: var(--logo-filter);
    transition: filter 0.5s ease;
}

.name {
    font-family: var(--font-heading);
    font-size: clamp(2.8rem, 8vw, 5.5rem);
    font-weight: 400;
    color: var(--text-color);
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
    opacity: 0;
}

#hero.active .name {
    animation: fadeInUp 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.4s both;
}

.tagline {
    font-family: var(--font-heading);
    font-size: clamp(1rem, 2.5vw, 1.6rem);
    font-style: italic;
    color: var(--accent-color);
    opacity: 0;
}

#hero.active .tagline {
    animation: fadeInUp 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.6s both;
}

/* ── Hero Animations ── */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes logoReveal {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(1.4);
    }

    to {
        opacity: 0.08;
        transform: translate(-50%, -50%) scale(1.5);
    }
}

.scroll-indicator {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator span {
    display: block;
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--accent-color) 0%, transparent 100%);
    animation: scroll-line 2s infinite ease-out;
}

@keyframes scroll-line {
    0% {
        transform: scaleY(0);
        transform-origin: top;
    }

    50% {
        transform: scaleY(1);
        transform-origin: top;
    }

    51% {
        transform: scaleY(1);
        transform-origin: bottom;
    }

    100% {
        transform: scaleY(0);
        transform-origin: bottom;
    }
}

/* ── Sections ── */
section {
    padding: 7rem 0;
}

#about {
    background: var(--bg-color);
}

#blogs {
    background: var(--surface);
}

#contact {
    background: var(--bg-color);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 400;
    margin-bottom: 3rem;
    color: var(--text-color);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 36px;
    height: 2px;
    background: var(--accent-light);
}

/* ── About Grid ── */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.about-item {
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 2.5rem 1.5rem;
    text-align: center;
    transition: var(--transition);
}

.about-item.clickable {
    cursor: pointer;
}

.about-item:hover {
    border-color: var(--accent-light);
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(124, 106, 82, 0.08);
}

.role {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: 0.3rem;
}

.connector {
    display: block;
    font-size: 0.75rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.12rem;
    margin-bottom: 0.3rem;
}

.reason {
    display: block;
    font-size: 0.95rem;
    letter-spacing: 0.08rem;
    text-transform: uppercase;
    color: var(--text-color);
}

/* ── Projects Grid ── */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.project-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    padding: 2.5rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.project-card.clickable {
    cursor: pointer;
}

.project-card:hover {
    border-color: var(--accent-light);
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(90, 125, 149, 0.08);
}

.project-main h3 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.project-tagline {
    font-family: var(--font-main);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-color);
    margin-bottom: 1.2rem;
    font-weight: 600;
}

.project-desc {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.project-status {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    background: var(--bg-color);
    border: 1px solid var(--border);
    font-size: 0.75rem;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

.project-link:hover {
    color: var(--text-color);
    gap: 0.75rem;
}

.gh-stars {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    padding: 0.4rem 0.8rem;
    background: var(--bg-color);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-light);
    opacity: 0;
    transform: translateX(10px);
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 2;
}

.gh-stars.visible {
    opacity: 1;
    transform: translateX(0);
}

.gh-stars i {
    color: var(--accent-color);
    font-size: 0.8rem;
}

/* ── Resources Grid ── */
.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.resource-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    padding: 2.5rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.resource-card.clickable {
    cursor: pointer;
}

.resource-card:hover:not(.locked) {
    border-color: var(--accent-light);
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(90, 125, 149, 0.08);
}

.resource-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    opacity: 0.8;
}

.resource-info h3 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.resource-info p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

.resource-footer {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.resource-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.resource-card:hover .resource-link {
    gap: 0.75rem;
}

.resource-card.locked {
    opacity: 0.6;
    background: rgba(0, 0, 0, 0.02);
    cursor: not-allowed;
}

[data-theme="dark"] .resource-card.locked {
    background: rgba(255, 255, 255, 0.02);
}

/* ── Blog Card ── */
.blog-card {
    border: 1px solid var(--border);
    padding: 3rem 2rem;
    text-align: center;
    width: 100%;
    background: var(--card-bg);
    transition: var(--transition);
}

.blog-card:hover {
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.06);
    border-color: var(--accent-light);
}

.blog-card h3 {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 400;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.blog-card p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    padding: 0.85rem 2.5rem;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.15rem;
    font-size: 0.78rem;
    transition: var(--transition);
    background: transparent;
}

.btn:hover {
    background: var(--accent-color);
    color: #fff;
}

.btn-sm {
    padding: 0.5rem 1.5rem;
    font-size: 0.7rem;
}

/* ── Blog Grid & Cards ── */
.blog-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.blog-post-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: var(--transition);
    height: 100%;
}

.blog-post-card.clickable {
    cursor: pointer;
}

.blog-post-card:hover {
    border-color: var(--accent-light);
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(90, 125, 149, 0.08);
}

.blog-post-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.blog-date {
    font-size: 0.75rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.blog-post-title {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--text-color);
    line-height: 1.4;
    /* Limit title to 2 lines */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-post-snippet {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 0.5rem;
    flex-grow: 1;
}

.blog-post-footer {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.read-more {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: gap 0.3s ease;
}

.blog-post-card:hover .read-more {
    gap: 0.75rem;
}

.blog-loading,
.blog-empty,
.blog-error {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: var(--text-light);
    font-size: 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
}

.blog-error p {
    margin-bottom: 1.5rem;
}

/* ── Socials ── */
.social-links {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
}

.social-icon {
    font-size: 1.6rem;
    color: var(--text-light);
    transition: var(--transition);
    text-decoration: none;
}

.social-icon:hover {
    color: var(--accent-color);
    transform: translateY(-5px);
}

/* ── Footer ── */
footer {
    padding: 3rem 0;
    border-top: 1px solid var(--border);
    text-align: center;
    background: var(--surface);
}

footer p {
    color: var(--text-light);
    font-size: 0.85rem;
    letter-spacing: 0.05rem;
}

/* ── Reveal Animation ── */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ── Responsive ── */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--surface);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 3rem;
        transition: right 0.6s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 1000;
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.05);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        font-size: 1.2rem;
    }

    section {
        padding: 5rem 0;
    }

    .blog-card {
        padding: 2.5rem 1.5rem;
    }

    .about-item {
        padding: 2rem 1rem;
    }
}



[data-theme="dark"] header {
    background: rgba(14, 17, 23, 0.92);
}

[data-theme="dark"] .about-item:hover,
[data-theme="dark"] .project-card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

/* ── Theme Toggle (Nav Bar) ── */
#theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--accent-color);
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    padding: 0;
    transition:
        background-color 0.35s ease,
        border-color 0.35s ease,
        color 0.35s ease,
        transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
        box-shadow 0.35s ease !important;
}

#theme-toggle:hover {
    background: var(--theme-toggle-bg);
    border-color: var(--accent-color);
    transform: scale(1.1);
    box-shadow: 0 0 0 4px var(--theme-toggle-bg);
}

#theme-toggle svg {
    width: 14px;
    height: 14px;
    position: absolute;
    transition:
        opacity 0.3s ease,
        transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Light mode: show sun, hide moon */
#theme-toggle .icon-sun {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

#theme-toggle .icon-moon {
    opacity: 0;
    transform: rotate(-45deg) scale(0.6);
}

/* Dark mode: show moon, hide sun */
[data-theme="dark"] #theme-toggle .icon-sun {
    opacity: 0;
    transform: rotate(45deg) scale(0.6);
}

[data-theme="dark"] #theme-toggle .icon-moon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

/* Spin animation on click */
#theme-toggle.spinning {
    animation: toggle-spin 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes toggle-spin {
    from {
        transform: rotate(-30deg) scale(0.88);
    }

    to {
        transform: rotate(0deg) scale(1);
    }
}

/* On mobile the toggle lives inside the hamburger slide-out menu */
@media (max-width: 768px) {
    #theme-toggle {
        width: 36px;
        height: 36px;
    }

    #theme-toggle svg {
        width: 18px;
        height: 18px;
    }
}

/* ── Dark mode: background logo more visible ── */
[data-theme="dark"] section::after {
    opacity: 0.18;
    filter: invert(1) sepia(0.05) saturate(0.3) brightness(1.8);
}

[data-theme="dark"] #hero::after {
    opacity: 0.78;
}