[data-theme="dark"] {
    /* Fallback colors for browsers without OKLCH support */
    --base-color: #000000;
    --text-color: #ffffff;
    --text-span: rgba(198, 238, 238, 0.603);
    --body-grid-line: rgba(255, 255, 255, 0.085);
    --nav-contrast-color: #000000;
    --theme: dark;
    --navbar-shadow: 0 30px 100px rgba(196, 140, 130, 0.8), 0 30px 100px rgba(215, 190, 185, 0.6);
    /* Darker shadow colors for animation */
    --shadow-color-primary: rgba(255, 255, 255, 0.8);
    --shadow-color-secondary: rgba(255, 255, 255, 0.7);
    --shadow-color-tertiary: rgba(255, 255, 255, 0.5);
    --gradient-header: linear-gradient(90deg, rgba(235, 235, 243, 0.431), rgba(118, 166, 200, 0), rgba(80, 146, 163, 0.2), rgb(52, 102, 108));
    --gradient: linear-gradient(90deg, var(--text-span), var(--text-color), var(--text-span));
    --backdrop-blur: blur(10px);
    --blend-mode: normal;
    --transition-duration: 400ms;
    --reveal-duration: 0.8s;
}

[data-theme="light"] {
    /* Fallback colors for browsers without OKLCH support */
    --base-color: #ffffff;
    --text-color: #000000;
    --text-span: rgb(55, 156, 187);
    --body-grid-line: rgba(0, 0, 0, 0.15);
    --nav-contrast-color: #ffffff;
    --theme: light;
    --navbar-shadow: 0 30px 100px rgba(196, 140, 130, 0.8), 0 30px 100px rgba(215, 190, 185, 0.6);
    /* Darker shadow colors for animation */
    --shadow-color-primary: rgb(48, 48, 48);
    --shadow-color-secondary: rgba(0, 0, 0, 0.7);
    --shadow-color-tertiary: rgba(0, 0, 0, 0.5);
    --gradient-header: linear-gradient(90deg, rgba(214, 218, 230, 0.431), rgba(84, 144, 202, 0.337), rgba(80, 146, 163, 0.2), rgb(52, 102, 108));
    --gradient: linear-gradient(90deg, var(--text-span), var(--text-color), var(--text-span));
    --backdrop-blur: blur(10px);
    --blend-mode: normal;
    --transition-duration: 400ms;
    --reveal-duration: 0.8s;
}


/* OKLCH colors for modern browsers - top-level @supports for maximum compatibility */

@supports (color: oklch(0% 0 0deg)) {
    [data-theme="dark"] {
        --base-color: oklch(0% 0 0deg);
        --text-color: oklch(100% 0.00011 271.152deg);
        --text-span: oklch(58% 0.08 195.377deg / 0.65);
        --body-grid-line: oklch(100% 0.00011 271.152deg / 0.085);
        --nav-contrast-color: oklch(0% 0 0deg);
        --navbar-shadow: 0 30px 100px oklch(72.926% 0.03553 18deg / 0.800), 0 30px 100px oklch(81% 0.01500 17.000deg / 0.600);
        /* Darker shadow colors for animation */
        --shadow-color-primary: oklch(100% 0.00011 271.152deg / 0.8);
        --shadow-color-secondary: oklch(100% 0.00011 271.152deg / 0.7);
        --shadow-color-tertiary: oklch(100% 0.00011 271.152deg / 0.5);
        --gradient-header: linear-gradient(90deg, oklch(94.194% 0.00638 255.743 / 0.431), oklch(80.908% 0.04481 210.936 / 0), oklch(55.728% 0.07474 207.281deg / 0.2), oklch(41.982% 0.0557 181.639deg));
    }
    [data-theme="light"] {
        --base-color: oklch(100% 0.00011 271.152deg);
        --text-color: oklch(0% 0 0deg);
        --text-span: oklch(53.447% 0.06872 209.921);
        --body-grid-line: oklch(0% 0 0deg / 0.15);
        --nav-contrast-color: oklch(100% 0.00011 271.152deg);
        --navbar-shadow: 0 30px 100px oklch(72.926% 0.03553 18deg / 0.800), 0 30px 100px oklch(81% 0.01500 17.000deg / 0.600);
        /* Darker shadow colors for animation */
        --shadow-color-primary: oklch(18.674% 0.00002 271.152deg);
        --shadow-color-secondary: oklch(0% 0 0deg / 0.7);
        --shadow-color-tertiary: oklch(0% 0 0deg / 0.5);
        --gradient-header: linear-gradient(90deg, oklch(87.496% 0.01591 248.156deg / 0.431), oklch(69.426% 0.07915 211.737deg / 0.337), oklch(55.728% 0.07474 207.281deg / 0.2), oklch(41.982% 0.0557 181.639deg));
    }
}

[data-theme="light"] .header-title,
[data-theme="light"] .main-subtitle,
[data-theme="light"] .color-picker label svg,
[data-theme="light"] main p,
[data-theme="light"] main .fancy,
[data-theme="light"] main .p-large,
[data-theme="light"] main .wrapper-gradient-text span {
    color: var(--text-color);
    mix-blend-mode: var(--blend-mode);
    font-weight: 500;
}

[data-theme="light"] .color-picker label svg {
    fill: currentColor;
}

[data-theme] body::before {
    --size: clamp(20px, 3vw, 30px);
    opacity: 1;
    pointer-events: none;
    content: "";
    position: fixed;
    inset: 0;
    /* Fallback viewport units for older browsers */
    width: 100vw;
    height: 100vh;
    background: linear-gradient(90deg, var(--body-grid-line) 1px, transparent 1px) 0 0 / var(--size) var(--size), linear-gradient(180deg, var(--body-grid-line) 1px, transparent 1px) 0 0 / var(--size) var(--size), var(--base-color);
    -webkit-mask-image: linear-gradient(-135deg, transparent 0%, var(--base-color) 20%);
    -webkit-mask-size: 400% 100%;
    -webkit-mask-repeat: no-repeat;
    mask-image: linear-gradient(-135deg, transparent 0%, var(--base-color) 20%);
    mask-size: 400% 100%;
    mask-repeat: no-repeat;
    transition: opacity 0.7s ease-in-out;
    isolation: isolate;
    z-index: 0;
}


/* Modern dynamic viewport units for browsers that support them */

@supports (height: 100dvh) and (width: 100dvw) {
    [data-theme] body::before {
        width: 100dvw;
        height: 100dvh;
    }
}

@media (prefers-reduced-transparency: reduce),
(prefers-reduced-motion: reduce) {
    [data-theme] body::before {
        background: var(--base-color);
        -webkit-mask-image: none;
        mask-image: none;
        transition: none;
    }
}

html.theme-transitioning body::before {
    will-change: opacity;
}

[data-theme] body {
    position: relative;
    z-index: 0;
    isolation: isolate;
}

:root {
    /*----------- Fluid typography with mobile scaling ------------- */
    --step-0: clamp(1rem, 0.9322rem + 0.339vw, 1.25rem);
    --step-1: clamp(1.2rem, 1.0736rem + 0.6322vw, 1.6663rem);
    --step-2: clamp(1.44rem, 1.2282rem + 1.0591vw, 2.2211rem);
    --step-3: clamp(1.728rem, 1.3937rem + 1.6715vw, 2.9607rem);
    --step-4: clamp(2.0736rem, 1.5656rem + 2.5398vw, 3.9467rem);
    --step-5: clamp(2.4883rem, 1.7364rem + 3.7594vw, 5.2609rem);
    --step-6: clamp(2.986rem, 1.894rem + 5.4601vw, 7.0128rem);
    /*----------Fluid spacing with mobile scaling ------------------ */
    --space-5xs: clamp(0.125rem, 0.1081rem + 0.0847vw, 0.1875rem);
    --space-4xs: clamp(0.1875rem, 0.1706rem + 0.0847vw, 0.25rem);
    --space-3xs: clamp(0.25rem, 0.2331rem + 0.0847vw, 0.3125rem);
    --space-2xs: clamp(0.5rem, 0.4661rem + 0.1695vw, 0.625rem);
    --space-xs: clamp(0.75rem, 0.6992rem + 0.2542vw, 0.9375rem);
    --space-s: clamp(1rem, 0.9322rem + 0.339vw, 1.25rem);
    --space-m: clamp(1.5rem, 1.3983rem + 0.5085vw, 1.875rem);
    --space-l: clamp(2rem, 1.8644rem + 0.678vw, 2.5rem);
    --space-xl: clamp(3rem, 2.7966rem + 1.0169vw, 3.75rem);
    --space-2xl: clamp(4rem, 3.7288rem + 1.3559vw, 5rem);
    --space-3xl: clamp(6rem, 5.5932rem + 2.0339vw, 7.5rem);
    --space-4xl: clamp(7rem, 6.5254rem + 2.3729vw, 8.75rem);
    --space-5xl: clamp(8rem, 7.4576rem + 2.7119vw, 10rem);
    --space-6xl: clamp(9rem, 8.3898rem + 3.0508vw, 11.25rem);
    --space-7xl: clamp(10rem, 9.322rem + 3.3898vw, 12.5rem);
    --space-8xl: clamp(11rem, 10.2542rem + 3.7288vw, 13.75rem);
    --space-9xl: clamp(12rem, 11.1864rem + 4.0678vw, 15rem);
    --space-10xl: clamp(13rem, 12.1186rem + 4.4068vw, 16.25rem);
    --space-11xl: clamp(14rem, 13.0508rem + 4.7458vw, 17.5rem);
    --space-12xl: clamp(15rem, 13.983rem + 5.0847vw, 18.75rem);
    /*---------------- Font Families settings ----------------- */
    --font-family: 'Alumni Sans Pinstripe', cursive;
    --font-style: italic;
    /*------------- letter and word spacing settings ----------------*/
    --padding-inline: var(--space-4xs);
    --letter-spacing: var(--space-4xs);
    --word-spacing: var(--space-4xs);
    --transition-icon: fill 0.3s, transform 0.3s;
    --transition-label: opacity 0.5s ease-in-out;
    --transition-theme: 0.35s;
}


/*--------------- Transitions and animations --------------------*/

@supports selector(::view-transition) {
    .support.view-transition {
        display: none;
    }
}

.support.style-query {
    display: block;
}

@supports (container-type: style) {
     :root {
        container-type: style;
    }
    .support.style-query {
        display: none;
    }
}

.support {
    background-color: var(--base-color);
    border-inline-start: 0.5rem solid var(--text-color);
    color: var(--text-color);
    border-radius: 0.5rem;
    padding: 1em 2em;
}

::view-transition {
    background: var(--base-color);
}

::view-transition-image-pair(root) {
    perspective: 2500px;
    perspective-origin: center;
    transform-style: preserve-3d;
    transform-origin: 50% 50% 0;
    filter: drop-shadow(0px 0px 25px hsl(165deg 11% 3% / 50%));
}

@media (prefers-reduced-motion: reduce),
(prefers-reduced-transparency: reduce) {
     ::view-transition-image-pair(root) {
        filter: none;
    }
}

@media (prefers-reduced-transparency: reduce) {
    .down::before,
    .up::before {
        animation: none;
        filter: none;
        box-shadow: none;
    }
}

::view-transition-old(root),
::view-transition-new(root) {
    animation-duration: 1s;
    animation-timing-function: ease-in-out;
    animation-fill-mode: both;
    transform-style: preserve-3d;
    transform-origin: 50% 50% 0;
    perspective: 2000px;
    transform: translateZ(-50vw) scale(var(--scale)) rotateY(var(--rotation)) translate(5vw);
    backface-visibility: hidden;
}


/* Modern dynamic viewport units for browsers that support them */

@supports (width: 100dvw) {
     ::view-transition-old(root),
     ::view-transition-new(root) {
        transform: translateZ(-50dvw) scale(var(--scale)) rotateY(var(--rotation)) translate(5dvw);
    }
}

::view-transition-old(root) {
    animation-name: reveal-out;
}

::view-transition-new(root) {
    animation-name: reveal-in;
}


/* Hide main content during theme transition, fade it in with the new color scheme */

::view-transition-old(footer),
::view-transition-new(footer),
::view-transition-old(wrapper),
::view-transition-new(wrapper),
::view-transition-old(header),
::view-transition-new(header),
::view-transition-old(main),
::view-transition-new(main) {
    display: none;
}


/* During theme toggle, route named elements through the root transition. */

html.theme-transitioning .wrapper,
html.theme-transitioning header,
html.theme-transitioning main,
html.theme-transitioning footer,
html.theme-transitioning .theme-label--light,
html.theme-transitioning .theme-label--dark {
    view-transition-name: none;
}

@property --rotation {
    syntax: "<angle>";
    inherits: false;
    initial-value: 0deg;
}

@property --scale {
    syntax: "<number>";
    inherits: false;
    initial-value: 1;
}

@keyframes reveal-in {
    from {
        --rotation: -90deg;
        animation-timing-function: ease-in-out;
    }
    15% {
        --scale: 0.7;
        --rotation: -90deg;
    }
    85% {
        --scale: 0.9;
        --rotation: 0deg;
        animation-timing-function: ease-in-out;
    }
    to {
        --rotation: 0deg;
    }
}

@keyframes reveal-out {
    from {
        --rotation: 0deg;
        animation-timing-function: ease-in-out;
    }
    15% {
        --scale: 0.7;
        --rotation: 0deg;
    }
    85% {
        --scale: 0.9;
        --rotation: 90deg;
        animation-timing-function: ease-in-out;
    }
    to {
        --rotation: 90deg;
    }
}


/*--------------------------  global styles  ----------------------*/

p,
h1,
h2,
h3,
h4,
h5,
h6,
figcaption {
    white-space: normal;
}

h1,
h2,
h3 {
    font-size: var(--step-2);
    font-weight: 400;
    font-style: italic;
}


/*-------------------------- Body styles  -------------------------*/

html,
body {
    color: var(--text-color);
    font-family: var(--font-family-primary), sans-serif;
    font-size: var(--step-0);
    font-style: var(--font-style);
    font-weight: var(--font-weight);
    letter-spacing: var(--letter-spacing);
    word-spacing: var(--word-spacing);
}

body {
    background: var(--base-color);
}


/*----------- Make .wrapper take full viewport height -------------*/

.wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    margin-inline: auto;
    view-transition-name: wrapper;
}

@supports (min-height: 100dvh) {
    .wrapper {
        min-height: 100dvh;
    }
}

[data-theme="light"] .wrapper {
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.6);
}


/*------------------------ Navigation  ------------------------*/

.overlay-navigation {
    position: fixed;
    z-index: 1000;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transform: translateY(-100%);
    transition: transform 0.6s ease-in-out;
    --nav-close-delay: 0.9s;
}

.overlay-navigation.overlay-slide-down {
    transform: translateY(0);
    transition-delay: 0s;
}

.overlay-navigation.overlay-slide-up {
    transform: translateY(-100%);
    transition-delay: var(--nav-close-delay);
}

nav,
nav ul {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    flex-basis: 20%;
    height: 100%;
    overflow: hidden;
    transform: translateY(-100%);
    background-color: var(--base-color);
    z-index: 1000;
}

nav li a {
    position: relative;
    top: 50%;
    color: var(--text-color);
    text-decoration: none;
    display: block;
    text-align: center;
    font-size: var(--step-2);
}

nav li a:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 4px;
}

nav li a:before {
    content: "";
    width: var(--space-xl);
    height: var(--space-3xs);
    background-color: var(--text-color);
    position: absolute;
    top: 50%;
    left: 0;
    z-index: 100;
    transform: translateX(-100%);
    opacity: 0;
    transition: opacity 0.2s linear, transform 0.2s linear;
}

nav li a:after {
    content: attr(data-content);
    font-size: var(--step-1);
    transition: opacity 0.2s linear, transform 0.2s linear;
    opacity: 0;
    position: absolute;
    z-index: 100;
    color: var(--text-color);
    display: block;
    margin-right: auto;
    margin-left: auto;
    left: 0;
    right: 0;
    bottom: var(--space-3xl);
    transform: translateY(0);
    text-transform: none;
    font-style: italic;
    letter-spacing: 0;
}

nav li a:hover:before {
    transform: translateX(0);
    opacity: 1;
}

nav li a:hover:after {
    transform: translateY(var(--space-s));
    opacity: 1;
}


/* Use color-mix when supported to create stepped backgrounds */

@supports (background-color: color-mix(in oklch, #000000 100%, #ffffff 0%)) {
    nav li:nth-of-type(1) {
        background-color: color-mix(in oklch, var(--base-color) 100%, var(--text-color) 0%);
    }
    nav li:nth-of-type(2) {
        background-color: color-mix(in oklch, var(--base-color) 80%, var(--text-color) 20%);
    }
    nav li:nth-of-type(3) {
        background-color: color-mix(in oklch, var(--base-color) 60%, var(--text-color) 40%);
    }
    nav li:nth-of-type(4) {
        background-color: color-mix(in oklch, var(--base-color) 40%, var(--text-color) 60%);
    }
    nav li:nth-of-type(5) {
        background-color: color-mix(in oklch, var(--base-color) 20%, var(--text-color) 80%);
    }
    nav li:nth-of-type(4) a:after,
    nav li:nth-of-type(5) a,
    nav li:nth-of-type(5) a:before,
    nav li:nth-of-type(5) a:after {
        color: var(--nav-contrast-color);
    }
    nav li:nth-of-type(4) a:before,
    nav li:nth-of-type(5) a:before {
        background-color: currentColor;
    }
    nav li:nth-of-type(4) a:hover:after,
    nav li:nth-of-type(5) a:hover:after {
        color: var(--nav-contrast-color);
    }
}


/* Opening animation - staggered slide down */

.slide-in-nav-item {
    animation: slide-in-nav-item 0.4s ease-out 1 0.2s both;
}

.slide-in-nav-item-delay-1 {
    animation: slide-in-nav-item 0.4s ease-out 1 0.4s both;
}

.slide-in-nav-item-delay-2 {
    animation: slide-in-nav-item 0.4s ease-out 1 0.6s both;
}

.slide-in-nav-item-delay-3 {
    animation: slide-in-nav-item 0.4s ease-out 1 0.8s both;
}

.slide-in-nav-item-delay-4 {
    animation: slide-in-nav-item 0.4s ease-out 1 1s both;
}


/* Closing animation - reverse staggered slide up */

.slide-in-nav-item-reverse {
    animation: slide-out-nav-item 0.4s ease-in 1 0s both;
}

.slide-in-nav-item-delay-1-reverse {
    animation: slide-out-nav-item 0.4s ease-in 1 0.1s both;
}

.slide-in-nav-item-delay-2-reverse {
    animation: slide-out-nav-item 0.4s ease-in 1 0.2s both;
}

.slide-in-nav-item-delay-3-reverse {
    animation: slide-out-nav-item 0.4s ease-in 1 0.3s both;
}

.slide-in-nav-item-delay-4-reverse {
    animation: slide-out-nav-item 0.4s ease-in 1 0.4s both;
}


/*------------------------Animation Keyframes  -------------------*/

@keyframes slide-in-nav-item {
    from {
        -webkit-transform: translateY(-100%);
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        -webkit-transform: translateY(0);
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slide-out-nav-item {
    from {
        -webkit-transform: translateY(0);
        transform: translateY(0);
        opacity: 1;
    }
    to {
        -webkit-transform: translateY(-100%);
        transform: translateY(-100%);
        opacity: 0;
    }
}


/*------------------------ Burger King  ------------------------*/

.open-overlay {
    position: fixed;
    top: var(--space-3xl);
    right: 50%;
    transform: translateX(50%);
    display: block;
    margin: 0 auto;
    z-index: 1000;
    width: var(--space-m);
    cursor: pointer;
}

.open-overlay:focus-visible {
    outline: 2px solid var(--text-color);
    outline-offset: 4px;
}

.open-overlay span {
    display: block;
    height: 1px;
    background-color: var(--text-color);
    cursor: pointer;
    margin-top: var(--space-2xs);
}

.animate-top-bar {
    animation: animate-top-bar 0.6s linear 1 both;
}

.animate-bottom-bar {
    animation: animate-bottom-bar 0.6s linear 1 both;
}

.animate-middle-bar {
    animation: animate-middle-bar 0.6s linear 1 both;
}

.animate-out-top-bar {
    animation: animate-top-bar 0.6s linear 1 both reverse;
}

.animate-out-bottom-bar {
    animation: animate-bottom-bar 0.6s linear 1 both reverse;
}

.animate-out-middle-bar {
    animation: animate-middle-bar 0.6s linear 1 both reverse;
}

@keyframes animate-top-bar {
    0% {
        background-color: var(--text-color);
    }
    50% {
        -webkit-transform: translateY(9px);
        transform: translateY(9px);
    }
    80% {
        -webkit-transform: translateY(5px);
        transform: translateY(5px);
        background-color: var(--text-color);
    }
    100% {
        -webkit-transform: translateY(0);
        transform: translateY(0);
        background-color: var(--text-color);
    }
}

@keyframes animate-bottom-bar {
    0% {
        background-color: var(--text-color);
    }
    50% {
        -webkit-transform: translateY(-9px);
        transform: translateY(-9px);
    }
    80% {
        -webkit-transform: translateY(-5px);
        transform: translateY(-5px);
        background-color: var(--text-color);
    }
    100% {
        -webkit-transform: translateY(0);
        transform: translateY(0);
        background-color: var(--text-color);
    }
}

@keyframes animate-middle-bar {
    0% {
        background-color: var(--text-color);
    }
    80% {
        background-color: var(--text-color);
    }
    100% {
        background-color: var(--text-color);
    }
}


/*------------------------ Header Styles  ------------------------*/

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--gradient-header);
    background-color: var(--base-color);
    backdrop-filter: var(--backdrop-blur);
    box-shadow: var(--navbar-shadow);
    margin: var(--space-4xs) var(--space-xl) var(--space-4xs) var(--space-xl);
    padding: var(--space-xs) var(--space-xl);
    border-radius: var(--space-l);
    isolation: isolate;
    position: relative;
    z-index: 2000;
    view-transition-name: header;
    transition: background-color var(--transition-duration) ease-in-out, background var(--transition-duration) ease-in-out, box-shadow var(--transition-duration) ease-in-out, backdrop-filter var(--transition-duration) ease-in-out;
}


/*--------------------- Header Title Styles  --------------------*/

.header-title span {
    margin: 0;
    padding: 0 var(--space-xs) 0 0;
    font-size: inherit;
    color: var(--text-span);
}


/* Hide header background and title when nav is open */

.overlay-slide-down~header {
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
}

.overlay-slide-down~header .header-title {
    opacity: 0;
    pointer-events: none;
}

.overlay-slide-down~header .color-picker {
    pointer-events: all;
    z-index: 2000;
    color: inherit;
}

.overlay-slide-down~header .color-picker label svg {
    fill: oklch(100% 0.00011 271.152deg);
}


/*----------- Theme switcher styles  -----------*/


/* ============================================
   COLOR PICKER - REFACTORED CSS
   ============================================
   
   This refactored version improves:
   - Logic: Removes redundant @supports fallback
   - Performance: Consolidates transitions, removes unused animations
   - Semantics: Better organized with clear section comments
   - Accessibility: Enhanced focus states and reduced-motion support
*/


/* ============================================
   VISUALLY HIDDEN UTILITY
   ============================================ */

.visually-hidden,
.color-picker input[type="radio"],
.color-picker .theme-input {
    border: 0;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    white-space: nowrap;
    width: 1px;
}


/* ============================================
   COLOR PICKER - VIEW TRANSITIONS
   ============================================ */


/* View transition names */

.color-picker input[type="radio"],
.color-picker svg {
    view-transition-name: none;
}

.color-picker .theme-label--light svg {
    view-transition-name: theme-toggle-light;
}

.color-picker .theme-label--dark svg {
    view-transition-name: theme-toggle-dark;
}


/* ============================================
   COLOR PICKER - LAYOUT & STRUCTURE
   ============================================ */

.color-picker {
    display: grid;
    place-items: center;
    width: var(--space-xl);
    height: var(--space-xl);
    cursor: pointer;
    position: relative;
    border-radius: 50%;
}

.color-picker>fieldset {
    width: 100%;
    height: 100%;
    border: 0;
    background: transparent;
    display: grid;
    place-items: center;
    position: relative;
}


/* ============================================
   COLOR PICKER - STATE MANAGEMENT
   ============================================ */


/* Hide checked labels - single rule with fallback class */

.color-picker label:has(> input:checked),
.color-picker label.checked,
.color-picker .theme-label:has(> .theme-input:checked),
.color-picker .theme-label.checked {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease-in-out;
}


/* ============================================
   COLOR PICKER - SVG STYLING
   ============================================ */

.color-picker label svg,
.color-picker .theme-label svg {
    width: var(--space-m);
    height: var(--space-m);
    display: block;
    fill: var(--text-color);
    transition: var(--transition-icon);
}

.color-picker svg path {
    fill: currentColor;
}


/* ============================================
   COLOR PICKER - INTERACTIVE STATES
   ============================================ */

.color-picker label,
.color-picker .theme-label {
    position: absolute;
    inset: 0;
    pointer-events: all;
    isolation: isolate;
    display: grid;
    place-items: center;
    cursor: pointer;
    border-radius: 50%;
    transition: opacity 0.5s ease-in-out;
}


/* Hover and focus states */

.color-picker label:is(:hover, :focus-within) svg,
.color-picker .theme-label:is(:hover, :focus-within) svg {
    fill: var(--base-color);
    transform: scale(0.8) rotate(90deg);
    background-color: var(--color-picker);
    padding: var(--space-5xs);
    border-radius: 50%;
    animation: icon-fade 0.3s ease-in-out;
}


/* Focus visible for keyboard navigation */

.color-picker label:focus-visible svg,
.color-picker .theme-label:focus-visible svg {
    outline: 2px solid var(--text-color);
    outline-offset: 2px;
}


/* ============================================
   COLOR PICKER - ANIMATIONS
   ============================================ */

@keyframes icon-fade {
    from {
        background-color: transparent;
    }
    to {
        background-color: var(--color-picker);
    }
}

.color-picker.is-animating .theme-label {
    transition-duration: var(--transition-theme);
}

.color-picker .theme-label.is-outgoing svg {
    animation: theme-picker-out var(--transition-theme) ease-in-out both;
}

.color-picker .theme-label.is-incoming svg {
    animation: theme-picker-in var(--transition-theme) ease-in-out both;
}

@keyframes theme-picker-out {
    from {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
    to {
        opacity: 0;
        transform: scale(0.75) rotate(-80deg);
    }
}

@keyframes theme-picker-in {
    from {
        opacity: 0;
        transform: scale(0.75) rotate(80deg);
    }
    to {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}


/* ============================================
   COLOR PICKER - TOUCH DEVICE ADJUSTMENTS
   ============================================ */

@media (hover: none) and (pointer: coarse) {
    .color-picker .theme-label:focus-visible {
        outline: 2px solid var(--text-color);
        outline-offset: 2px;
    }
    .color-picker label:is(:hover, :focus-within) svg,
    .color-picker .theme-label:is(:hover, :focus-within) svg {
        fill: var(--text-color);
        transform: scale(1) rotate(0deg);
        background-color: transparent;
        padding: 0;
        border-radius: 0;
        animation: none;
    }
}


/* ============================================
   COLOR PICKER - REDUCED MOTION SUPPORT
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    .color-picker label svg,
    .color-picker .theme-label svg {
        transition: none;
    }
    .color-picker label:is(:hover, :focus-within) svg,
    .color-picker .theme-label:is(:hover, :focus-within) svg {
        animation: none;
    }
    .color-picker .theme-label.is-outgoing svg,
    .color-picker .theme-label.is-incoming svg {
        animation: none;
    }
}


/*----------------------- main content ------------------------*/

main {
    margin-inline: auto;
    margin-block-start: var(--space-4xl);
    padding-inline: var(--padding-inline);
    mix-blend-mode: var(--blend-mode);
    text-align: center;
    flex-grow: 1;
    view-transition-name: main;
}

main>*+* {
    margin-block: 0;
    margin-inline: auto;
}

.p-small {
    padding-block: var(--space-4xs);
}

.fancy {
    font-style: italic;
}

.fancy span {
    display: inline-block;
    padding-block: var(--space-3xs);
    font-style: italic;
    font-size: var(--step-1);
}

.p-large {
    padding-block: var(--space-3xs);
    font-size: var(--step-1);
    font-weight: 600;
}

.profile-header-img {
    width: var(--space-9xl);
    height: var(--space-9xl);
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: var(--space-m);
}

.profile-title {
    margin: 0 auto var(--space-2xl) auto;
    position: relative;
    display: block;
    text-align: center;
    z-index: 1000;
    isolation: isolate;
    animation: fadeIn 0.9s ease-in-out;
    transition: transform 0.3s ease-in-out;
    letter-spacing: var(--letter-spacing);
    word-spacing: var(--word-spacing);
    font-size: var(--step-2);
    color: var(--text-color);
    border-radius: var(--space-l);
}

.profile-title span {
    position: relative;
    z-index: 1000;
    isolation: isolate;
    user-select: none;
    pointer-events: none;
    margin-inline: auto;
    font-size: var(--step-2);
    white-space: nowrap;
    text-align: center;
    color: var(--text-color);
    text-shadow: var(--text-shadow);
    background: var(--gradient);
    background-size: 400% 400%;
    animation: gradientAnimation 3s ease-in-out infinite alternate;
    border-radius: var(--space-l);
    box-shadow: var(--shadow);
    display: inline-block;
    margin: var(--space-4xs) auto;
    padding: var(--space-2xs) var(--space-4xl);
    margin-block: var(--space-2xs);
    background: var(--gradient);
}

@keyframes gradientAnimation {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

@media (prefers-reduced-motion: reduce) {
     ::view-transition-group(*),
     ::view-transition-old(*),
     ::view-transition-new(*) {
        animation: none;
    }
     ::view-transition-old(root),
     ::view-transition-new(root) {
        transform: none;
        perspective: none;
        transform-style: flat;
        backface-visibility: visible;
    }
    .overlay-slide-down,
    .overlay-slide-up,
    nav li a:before,
    nav li a:after,
    .open-overlay span,
    .color-picker .theme-label,
    .color-picker .theme-label svg {
        transition: none;
    }
    .slide-in-nav-item,
    .slide-in-nav-item-delay-1,
    .slide-in-nav-item-delay-2,
    .slide-in-nav-item-delay-3,
    .slide-in-nav-item-delay-4,
    .slide-in-nav-item-reverse,
    .slide-in-nav-item-delay-1-reverse,
    .slide-in-nav-item-delay-2-reverse,
    .slide-in-nav-item-delay-3-reverse,
    .slide-in-nav-item-delay-4-reverse,
    .animate-top-bar,
    .animate-bottom-bar,
    .animate-middle-bar,
    .animate-out-top-bar,
    .animate-out-bottom-bar,
    .animate-out-middle-bar,
    .text-layer,
    .color-picker .theme-label.is-outgoing svg,
    .color-picker .theme-label.is-incoming svg {
        animation: none;
    }
    .color-picker label svg {
        transition: none;
    }
    .color-picker label:hover svg,
    .color-picker label:focus-within svg {
        transform: none;
    }
}

@media (max-width: 675px) {
    body,
    .wrapper {
        overflow-x: hidden;
    }
    nav ul li a {
        font-size: 18px;
    }
    nav li a:before {
        width: 20px;
    }
    nav li a:after {
        font-size: 1rem;
    }
    .open-overlay {
        position: fixed;
        top: var(--space-2xl);
        right: 50%;
        transform: translateX(50%);
        display: block;
        margin: 0 auto;
        z-index: 1000;
        width: 34px;
        cursor: pointer;
    }
    main {
        margin-inline: auto;
        margin-block-start: var(--space-3xl);
    }
    header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        background: var(--gradient-header);
        background-color: var(--base-color);
        backdrop-filter: var(--backdrop-blur);
        box-shadow: var(--navbar-shadow);
        margin: var(--space-3xs) var(--space-2xs);
        padding: var(--space-4xs) var(--space-xs);
        border-radius: var(--space-l);
        isolation: isolate;
        position: relative;
        z-index: 2000;
    }
    .header-title span {
        margin: 0;
        padding: 0;
        font-size: inherit;
        color: var(--text-span);
    }
    .color-picker {
        margin: var(--space-4xs);
    }
    .color-picker label svg {
        width: var(--space-m);
        height: var(--space-m);
    }
}


/* Mobile/touch: Already handled in refactored COLOR PICKER - TOUCH DEVICE ADJUSTMENTS section above */