/* ==========================================================================
   The Opening — Main Stylesheet
   Design reference: oxman.com
   Monochrome palette, ultra-thin typography, GSAP-driven animations
   ========================================================================== */

/* --------------------------------------------------------------------------
   Custom Properties
   -------------------------------------------------------------------------- */
:root {
    /* Theme colors - dark mode (default) */
    --color-bg: #000000;
    --color-text: #ffffff;
    --color-text-muted: #d9d9d9;
    --color-surface: #1a1a1a;
    --color-border: #888888;

    /* Footer inverted colors */
    --color-footer-bg: #ffffff;
    --color-footer-text: #000000;

    /* Static colors (don't change with theme) */
    --color-black: #000000;
    --color-white: #ffffff;
    --color-grey: #d9d9d9;
    --color-grey-dark: #1a1a1a;
    --color-grey-mid: #888888;

    --spacing-gutter: 0.75rem;
    --spacing-section: 6.25rem;
    --spacing-xl: 12.5rem;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    --font-tracking: 0.035em;

    --ease-out: cubic-bezier(0.625, 0.05, 0, 1);
    --ease-in-out: cubic-bezier(0.45, 0, 0.15, 1);

    --header-height: 4.5rem;
}

/* Light mode theme */
[data-theme="light"] {
    --color-bg: #ffffff;
    --color-text: #000000;
    --color-text-muted: #333333;
    --color-surface: #f5f5f5;
    --color-border: #666666;

    /* Footer inverted in light mode */
    --color-footer-bg: #000000;
    --color-footer-text: #ffffff;
}

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

html {
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-weight: 400;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

body.no-scroll {
    overflow: hidden;
}

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

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

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: inherit;
    font-size: inherit;
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* --------------------------------------------------------------------------
   Typography Scale
   -------------------------------------------------------------------------- */
.display-h {
    font-size: 14vw;
    font-weight: 100;
    line-height: 0.8;
    text-transform: uppercase;
    letter-spacing: -0.01em;
}

.display-h-small {
    font-size: 9.5vw;
    font-weight: 100;
    line-height: 1.05;
    text-transform: uppercase;
    letter-spacing: -0.01em;
}

.h-xlarge {
    font-size: 4.5rem;
    font-weight: 200;
    line-height: 1.1;
}

.txt-xlarge {
    font-size: 4rem;
    font-weight: 200;
}

.txt-large {
    font-size: 1.4em;
    font-weight: 500;
}

.txt-small {
    font-size: 1.25em;
    font-weight: 500;
}

/* Cap display heading above 1280px */
@media (min-width: 1280px) {
    .display-h {
        font-size: min(14vw, 16rem);
    }
}

/* --------------------------------------------------------------------------
   Animated Link Underline
   -------------------------------------------------------------------------- */
[data-underline] {
    position: relative;
    display: inline-block;
}

[data-underline]::before {
    content: "";
    position: absolute;
    bottom: -0.0625em;
    left: 0;
    width: 100%;
    height: 0.0625em;
    background: currentColor;
    transition: transform 0.35s var(--ease-out);
    transform-origin: right;
    transform: scaleX(0);
}

[data-underline]:hover::before {
    transform-origin: left;
    transform: scaleX(1);
}

/* --------------------------------------------------------------------------
   Header / Navigation
   -------------------------------------------------------------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 0.25rem 2.65rem 1.5rem 0.5rem;
    pointer-events: none;
}

@media (min-width: 1024px) {
    .header {
        padding: 0.25rem 10.65rem 2rem 0.75rem;
    }
}

@media (min-width: 1440px) {
    .header {
        padding: 0.25rem 18.65rem 2.5rem 1rem;
    }
}

@media (min-width: 1920px) {
    .header {
        padding: 0.25rem 26.65rem 3rem 1rem;
    }
}

.header.is-hidden {
    transform: translateY(-100%);
}

.nav {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
}

.nav__brand {
    font-size: 2.5rem;
    font-weight: 100;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    white-space: nowrap;
    pointer-events: auto;
    color: var(--color-white);
}

.nav__links {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    pointer-events: auto;
    text-align: left;
}

.nav__links a {
    font-size: 1.1rem;
    font-weight: 200;
    letter-spacing: -0.01em;
    line-height: 1.2;
    color: var(--color-white);
}

.nav__hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 6px;
    width: 2.5rem;
    height: 2.5rem;
    z-index: 110;
}

.nav__hamburger-line {
    display: block;
    width: 1.5rem;
    height: 1px;
    background-color: var(--color-white);
    transition: transform 0.3s var(--ease-out), opacity 0.3s ease;
}

.nav__hamburger.is-active .nav__hamburger-line:first-child {
    transform: translateY(3.5px) rotate(45deg);
}

.nav__hamburger.is-active .nav__hamburger-line:last-child {
    transform: translateY(-3.5px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   Mobile Menu Overlay
   -------------------------------------------------------------------------- */
.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 105;
    background-color: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s var(--ease-out), visibility 0.4s, background-color 0.3s ease;
}

.mobile-menu.is-open {
    opacity: 1;
    visibility: visible;
}

.mobile-menu__links {
    text-align: center;
}

.mobile-menu__links li {
    margin-bottom: 2rem;
}

.mobile-menu__links a {
    font-size: 3rem;
    font-weight: 200;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: opacity 0.3s ease;
}

.mobile-menu__links a:hover {
    opacity: 0.6;
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
    position: relative;
    width: 100%;
    height: 100svh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero--page {
    height: 70svh;
}

.hero--short {
    height: 50svh;
}

.hero__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero__bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(rgba(0, 0, 0, 0.7) 2%, transparent 80%);
}

.hero__overlay--solid {
    background: rgba(0, 0, 0, 0.55);
}

.hero__content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 0 var(--spacing-gutter);
    mix-blend-mode: exclusion;
    color: var(--color-white);
}

.hero__title {
    margin-bottom: 1.5rem;
}

.hero__subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    letter-spacing: var(--font-tracking);
}

.hero__circle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: min(85vw, 90vh);
    height: min(85vw, 90vh);
    border: 1px solid rgba(255, 255, 255, 0.7);
    border-radius: 50%;
    z-index: 2;
    pointer-events: none;
}

@media (min-width: 768px) {
    .hero__circle {
        width: 90vh;
        height: 90vh;
    }
}

/* --------------------------------------------------------------------------
   Sections — General
   -------------------------------------------------------------------------- */
.section {
    padding: var(--spacing-section) calc(var(--spacing-gutter) * 2);
}

.section__inner {
    max-width: 1400px;
    margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Manifesto / Text Sections
   -------------------------------------------------------------------------- */
.section--manifesto .section__inner,
.section--text .section__inner {
    max-width: 1200px;
}

.section--manifesto .h-xlarge,
.section--text .h-xlarge {
    letter-spacing: -0.01em;
}

/* --------------------------------------------------------------------------
   Pillar Sections (Three Pillars — Homepage)
   -------------------------------------------------------------------------- */
.section--pillar {
    padding-top: 0;
    padding-bottom: var(--spacing-section);
}

.pillar__border {
    width: 100%;
    height: 2px;
    background-color: var(--color-text);
    margin-bottom: 4rem;
}

.pillar__content {
    padding: 0 calc(var(--spacing-gutter) * 2);
    margin-bottom: 3rem;
}

.pillar__heading {
    margin-bottom: 2rem;
}

.pillar__question {
    margin-bottom: 1.5rem;
    max-width: 50ch;
}

.pillar__answer {
    font-size: 1.1rem;
    font-weight: 300;
    line-height: 1.7;
    max-width: 60ch;
    opacity: 0.8;
}

.pillar__image-wrap {
    width: 100%;
    overflow: hidden;
    height: 60vh;
    position: relative;
}

.pillar__image {
    width: 100%;
    height: 120%;
    object-fit: cover;
    object-position: center;
    will-change: transform;
}

/* --------------------------------------------------------------------------
   CTA Section
   -------------------------------------------------------------------------- */
.section--cta {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: var(--spacing-xl) calc(var(--spacing-gutter) * 2);
}

.section--cta__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.section--cta__bg-img {
    width: 100%;
    height: 120%;
    object-fit: cover;
    object-position: center;
    will-change: transform;
}

.section--cta__overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: rgba(0, 0, 0, 0.5);
}

.section--cta__content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    mix-blend-mode: exclusion;
    color: var(--color-white);
}

.section--cta__content .display-h-small {
    margin-bottom: 2rem;
}

.section--cta__text {
    font-size: 1.3rem;
    font-weight: 300;
    line-height: 1.7;
    margin-bottom: 2.5rem;
    max-width: 55ch;
}

.section--cta__link {
    font-size: 1.3rem;
    font-weight: 400;
    letter-spacing: 0.04em;
}

/* --------------------------------------------------------------------------
   Values Section (About page)
   -------------------------------------------------------------------------- */
.values-grid {
    display: flex;
    flex-direction: column;
}

.value-pair {
    padding-bottom: 3rem;
}

.value-pair__border {
    width: 100%;
    height: 2px;
    background-color: var(--color-text);
    margin-bottom: 3rem;
}

.value-pair__items {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.value-pair__divider {
    width: 3rem;
    height: 1px;
    background-color: var(--color-grey-mid);
    flex-shrink: 0;
}

.value-pair__item .display-h-small {
    font-size: 7vw;
}

/* --------------------------------------------------------------------------
   Work Grid (Work page)
   -------------------------------------------------------------------------- */
.work-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 3rem;
}

.work-card {
    flex: 1 1 calc(50% - 1.5rem);
    min-width: 280px;
    transition: transform 0.4s var(--ease-out);
}

.work-card:hover {
    transform: translateY(-4px);
}

.work-card__image-wrap {
    width: 100%;
    overflow: hidden;
    margin-bottom: 1.5rem;
    aspect-ratio: 4 / 3;
    background-color: var(--color-surface);
}

.work-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--ease-out);
}

.work-card:hover .work-card__image {
    transform: scale(1.03);
}

.work-card__title {
    font-size: 1.5rem;
    font-weight: 200;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 0.75rem;
}

.work-card__desc {
    font-size: 1rem;
    font-weight: 300;
    line-height: 1.7;
    opacity: 0.8;
    max-width: 45ch;
}

/* --------------------------------------------------------------------------
   Collective / Team Section
   -------------------------------------------------------------------------- */
.section--collective .section__inner {
    max-width: 1200px;
}

.team-member {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-section);
}

.team-member:last-child {
    margin-bottom: 0;
}

.team-member__image-wrap {
    width: 100%;
    overflow: hidden;
    margin-bottom: 2rem;
    aspect-ratio: 3 / 4;
    background-color: var(--color-surface);
}

.team-member__image {
    width: 100%;
    height: 120%;
    object-fit: cover;
    object-position: center top;
    will-change: transform;
}

.team-member__info {
    max-width: 55ch;
}

.team-member__name {
    font-size: 2.5rem;
    font-weight: 200;
    letter-spacing: -0.01em;
    margin-bottom: 0.5rem;
}

.team-member__title {
    font-size: 1.1rem;
    font-weight: 400;
    letter-spacing: 0.04em;
    opacity: 0.7;
    margin-bottom: 1.5rem;
}

.team-member__bio {
    font-size: 1.05rem;
    font-weight: 300;
    line-height: 1.8;
    opacity: 0.85;
}

/* --------------------------------------------------------------------------
   Contact Section
   -------------------------------------------------------------------------- */
.contact-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 4rem;
}

.contact-form {
    flex: 1 1 55%;
    min-width: 300px;
}

.form-group {
    margin-bottom: 2.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
    padding: 1rem 0;
    font-size: 1.1rem;
    font-weight: 300;
    transition: border-bottom-color 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-border);
    font-weight: 300;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-bottom-color: var(--color-text);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-submit {
    background-color: var(--color-text);
    color: var(--color-bg);
    padding: 1rem 3rem;
    border: none;
    font-size: 1rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: opacity 0.3s ease, background-color 0.3s ease, color 0.3s ease;
}

.form-submit:hover {
    opacity: 0.85;
}

.contact-details {
    flex: 1 1 35%;
    min-width: 250px;
}

.contact-detail {
    margin-bottom: 2.5rem;
}

.contact-detail__label {
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.5;
    margin-bottom: 0.5rem;
}

.contact-detail__value {
    font-size: 1.2rem;
    font-weight: 300;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
    background-color: var(--color-footer-bg);
    color: var(--color-footer-text);
    border-top: 2px solid var(--color-footer-text);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.footer__inner {
    padding: var(--spacing-section) calc(var(--spacing-gutter) * 2);
    max-width: 1400px;
    margin: 0 auto;
}

.footer__top {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 2rem;
    margin-bottom: 4rem;
}

.footer__brand {
    font-size: 1.5rem;
    font-weight: 200;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.footer__links {
    display: flex;
    gap: 2rem;
}

.footer__links a {
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 0.04em;
}

.footer__social {
    display: flex;
    gap: 2rem;
}

.footer__social a {
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 0.04em;
}

.footer__bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 0, 0, 0.15);
}

.footer__bottom p {
    font-size: 0.9rem;
    font-weight: 300;
    opacity: 0.6;
}

/* --------------------------------------------------------------------------
   GSAP Animation Target Classes
   -------------------------------------------------------------------------- */
.split-text {
    visibility: hidden;
}

.split-text.is-split {
    visibility: visible;
}

.parallax-img {
    will-change: transform;
}

/* Fade-in utility for scroll-triggered elements */
.fade-up {
    opacity: 0;
    transform: translateY(2rem);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.fade-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* --------------------------------------------------------------------------
   Responsive — 1600px
   -------------------------------------------------------------------------- */
@media (max-width: 1600px) {
    .section {
        padding: var(--spacing-section) calc(var(--spacing-gutter) * 2);
    }
}

/* --------------------------------------------------------------------------
   Responsive — 1280px
   -------------------------------------------------------------------------- */
@media (max-width: 1280px) {
    .h-xlarge {
        font-size: 3.5rem;
    }

    .txt-xlarge {
        font-size: 3rem;
    }

    .value-pair__item .display-h-small {
        font-size: 6vw;
    }
}

/* --------------------------------------------------------------------------
   Responsive — 992px
   -------------------------------------------------------------------------- */
@media (max-width: 992px) {
    :root {
        --spacing-section: 4rem;
        --spacing-xl: 8rem;
    }

    .h-xlarge {
        font-size: 2.8rem;
    }

    .txt-xlarge {
        font-size: 2.4rem;
    }

    .work-card {
        flex: 1 1 100%;
    }

    .team-member__image-wrap {
        aspect-ratio: 4 / 3;
    }

    .contact-grid {
        flex-direction: column;
    }

    .value-pair__items {
        flex-wrap: wrap;
    }

    .value-pair__item .display-h-small {
        font-size: 8vw;
    }
}

/* --------------------------------------------------------------------------
   Responsive — 768px
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
    .nav__links a {
        font-size: 0.875rem;
    }

    .display-h {
        font-size: 16vw;
    }

    .display-h-small {
        font-size: 11vw;
    }

    .h-xlarge {
        font-size: 2.2rem;
    }

    .hero__subtitle {
        font-size: 1.2rem;
    }

    .pillar__content {
        padding: 0 var(--spacing-gutter);
    }

    .pillar__image-wrap {
        height: 45vh;
    }

    .section--cta {
        min-height: 60vh;
    }

    .team-member__name {
        font-size: 2rem;
    }

    .footer__top {
        flex-direction: column;
        gap: 1.5rem;
    }
}

/* --------------------------------------------------------------------------
   Responsive — 479px
   -------------------------------------------------------------------------- */
@media (max-width: 479px) {
    :root {
        --spacing-section: 3rem;
        --spacing-xl: 5rem;
    }

    .display-h {
        font-size: 18vw;
    }

    .display-h-small {
        font-size: 13vw;
    }

    .h-xlarge {
        font-size: 1.8rem;
    }

    .hero--page {
        height: 50svh;
    }

    .hero--short {
        height: 40svh;
    }

    .mobile-menu__links a {
        font-size: 2rem;
    }

    .pillar__image-wrap {
        height: 35vh;
    }

    .team-member__name {
        font-size: 1.6rem;
    }

    .footer__links,
    .footer__social {
        flex-direction: column;
        gap: 0.75rem;
    }
}

/* --------------------------------------------------------------------------
   Theme Toggle
   -------------------------------------------------------------------------- */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.25rem;
    height: 1.25rem;
    background: transparent;
    border: 1px solid var(--color-white);
    border-radius: 50%;
    cursor: pointer;
    pointer-events: auto;
    transition: opacity 0.3s ease;
}

.theme-toggle:hover {
    opacity: 0.7;
}

.theme-toggle__icon {
    width: 0.65rem;
    height: 0.65rem;
    fill: none;
    stroke: var(--color-white);
    stroke-width: 1.5;
}

/* Sun icon (shown in dark mode) */
.theme-toggle__sun {
    display: block;
}

.theme-toggle__moon {
    display: none;
}

/* Moon icon (shown in light mode) */
[data-theme="light"] .theme-toggle__sun {
    display: none;
}

[data-theme="light"] .theme-toggle__moon {
    display: block;
}

/* Position toggle at right edge */
.nav .theme-toggle {
    position: fixed;
    top: 0.5rem;
    right: 1.5rem;
}

/* --------------------------------------------------------------------------
   Reduced Motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .split-text {
        visibility: visible;
    }

    .fade-up {
        opacity: 1;
        transform: none;
    }
}

/* Profile copy: space between bio paragraphs */
.team-member__bio + .team-member__bio {
    margin-top: 1.2em;
}

/* Single-practitioner profile: photo beside the text on wide screens */
@media (min-width: 993px) {
    .team-member {
        flex-direction: row;
        align-items: flex-start;
        gap: 4rem;
    }

    .team-member__image-wrap {
        flex: 0 0 38%;
        max-width: 520px;
        margin-bottom: 0;
    }
}

@media (max-width: 992px) {
    .team-member__image-wrap {
        aspect-ratio: 4 / 5;
    }
}

/* Phone: keep the brand clear of the nav links */
@media (max-width: 479px) {
    .nav__brand {
        font-size: 1.5rem;
    }
}