@import url("design-tokens.css");

/* GLOBAL RESETS & BASE ELEMENTS */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
}
.skip-link:focus {
    left: var(--space-md);
    top: var(--space-md);
    background: white;
    color: black;
    padding: .75rem 1rem;
    z-index: 9999;
}
html, body {
  min-height: 100vh; 
  margin: 0;
}
html {
    scroll-behavior: smooth; /* Pure CSS smooth anchoring */
}
* {
    box-sizing: border-box;
    margin: 0;
    /* padding: 0; */
}
body {
    display: grid;
    grid-template-rows: auto 1fr auto;
    font-family: var(--font-body);
    color: var(--color-ink-800);
    background-color: var(--color-surface);
    /* line-height: 1.7; */
    -webkit-font-smoothing: antialiased;
}

body.modal-open {
    overflow: hidden;
}
h1, h2, h3, h4, h5 {
    font-family: var(--font-display);
    font-weight: var(--fw-regular);
    font-style: normal;
    letter-spacing: var(--tracking-snug);
}
p {
    margin: 1rem 0;
}

section[id] {
    scroll-margin-top: var(--nav-scroll-offset);
}

/* KEYFRAMES & SHARED ANIMATION UTILITIES */

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(8px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/*title animation*/
h1 span.animate {
    display: inline-block;
}
@-webkit-keyframes fadeInLeft {
    from {
        -webkit-transform: translate3d(-22px, 0, 0);
                transform: translate3d(-22px, 0, 0);
        opacity: 0;
    } to {
        -webkit-transform: none;
                transform: none;
        opacity: 1;
    }
}
@keyframes fadeInLeft {
    from {
        -webkit-transform: translate3d(-22px, 0, 0);
                transform: translate3d(-22px, 0, 0);
        opacity: 0;
    } to {
        -webkit-transform: none;
                transform: none;
        opacity: 1;
    }
}
.fadeInLeft {
    -webkit-animation-name: fadeInLeft;
            animation-name: fadeInLeft;
}
.animate {
    -webkit-animation-duration: var(--duration-heading);
            animation-duration: var(--duration-heading);
    -webkit-animation-timing-function: var(--ease-in-out-soft);
            animation-timing-function: var(--ease-in-out-soft);
    -webkit-animation-fill-mode: both;
            animation-fill-mode: both;
}
.delay-500 {
    -webkit-animation-delay: var(--delay-500);
            animation-delay: var(--delay-500);
}
.delay-900 {
    -webkit-animation-delay: var(--delay-900);
            animation-delay: var(--delay-900);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* GLOBAL SITE HEADER & NAVIGATION */

.global-site-header {
    width: 100%;
    background-color: var(--color-tint-cream);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    margin: 0 auto;
    padding: var(--space-lg) var(--space-6xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.header-container a img {
    height: 44px;
    width: auto;
}

.site-nav a {
    text-decoration: none;
    color: var(--color-ink-400);
    font-size: var(--font-size-body);
    font-weight: var(--fw-medium);
    margin-left: var(--space-2xl);
    margin-top: 15px;
    transition: color var(--duration-fast) var(--ease-standard);
    display: inline-block;
    height: 45px;
}

.site-nav a:hover,
.site-nav a.active {
    color: var(--color-ink-900);
}
footer {
  display: flex;
  justify-content: space-between;
  background-color: var(--color-ink-800);
  color: var(--color-surface);
  text-align: center;
  padding: 20px;
  width: 100%;
}
footer a {
    color: var(--color-surface);
}
/* --- Homepage Hero Intro --- */
.home-hero {
    padding: var(--space-7xl) var(--space-2xl);
    text-align: left;
    display: flex;
    justify-content: center;
    background-color: var(--color-tint-cream);
    background-position: center;
}
.home-hero-content {
    color: var(--color-ink-900); /* White text for contrast */
    padding: 0 var(--space-2xl);
}

.home-title {
    font-size: var(--font-size-6xl);
    font-weight: var(--fw-bold);
    letter-spacing: var(--tracking-snug);
    line-height: var(--line-height-tight);
    margin-bottom: var(--space-xl);
}
.home-title .heroAccent {
    color: var(--color-accent);
}
.home-subtitle {
    font-family: var(--font-body);
    font-weight: var(--fw-regular);
    font-size: var(--font-size-2xl);
    line-height: var(--line-height-snug);
    max-width: 650px;
}
/* Second declaration for .home-subtitle intentionally follows the
   first — same specificity, so source order lets this animation-
   entrance version win the cascade */
.home-subtitle {
  /* display: block;  */

  /* 2. Set the initial state (shifted down and invisible) */
  opacity: 0;
  transform: translateY(20px); /* Adjust the pixels for a longer/shorter slide */

  /* 3. Apply the animation properties */
  animation-name: slideUp;
  animation-duration: var(--duration-subtitle);        /* Match or slightly adjust your timing preference */
  animation-fill-mode: forwards; /* Crucial: stops the element from resetting to opacity 0 */

  /* 4. The Magic Trick: Wait for the H1 spans to finish */
  /* If your H1 animation duration is 1.5s, make this delay 1.5s (or slightly less to overlap) */
  animation-delay: var(--delay-subtitle);
  animation-timing-function: ease-out;
}

/* FEATURED WORK CARD SYSTEM */

.work-section {
    padding: var(--space-2xl) 0;
}

.work-featured-card {
    display: grid;
    grid-template-columns: 2fr 2fr;
    gap: var(--space-6xl);
    align-items: normal;
    margin-top: var(--space-md);
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
}

.work-image-side {
    width: 100%;
    height: 400px;
    background-color: var(--color-surface-muted);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
    align-items: flex-start;
}
.work-image-side img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    display: block;
    
}
.image-fallback {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-fallback-start) 0%, var(--color-fallback-end) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
}
.work-text-side {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
.work-tag {
    font-size: var(--font-size-xs);
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    color: var(--color-ink-400);
    margin-bottom: var(--space-sm);
}
.work-text-side p {
    color: var(--color-ink-600);
    font-size: var(--font-size-base);
    margin: .25rem 0;
    line-height: var(--line-height-normal);
}
.view-project-btn {
    display: inline-block;
    margin-top: var(--space-md);
    text-decoration: none;
    color: var(--color-surface);
    background-color: var(--color-ink-800);
    padding: 0.85rem 1.75rem;
    font-size: var(--font-size-body);
    font-weight: var(--fw-semibold);
    border-radius: var(--radius-sm);
}
.view-project-btn:hover {
    background-color: var(--color-accent);
    transform: translateY(-1px);
}


/* CASE STUDY CONTAINER & DIVIDERS */
.selected-work-container {
    margin: 0 auto;
    padding: var(--space-6xl);
}
.case-study-container {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: var(--space-6xl);
}

.section-divider {
    border: 0;
    height: 1px;
    background-color: var(--color-border);
    margin: var(--space-2xl) 0;
}
.section-divider-half {
    margin: var(--space-2xl) auto;
    width: 50%;
}

/* --- Hero Header --- */
.hero-header {
    position: relative;
    max-width: var(--content-max-width);
    height: 50vh;
    min-height: 380px;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: left;
    padding: var(--space-2xl);
    margin: 0 auto;
    border-bottom: 1px solid var(--color-border-strong);
}
.hero-content {
    position: relative;
    z-index: 2;
}
.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: var(--fw-bold);
    letter-spacing: var(--tracking-wide);
    color: var(--color-ink-900);
    margin-bottom: var(--space-xs);
    line-height: var(--line-height-snug);
}
.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-ink-600);
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
    font-weight: var(--fw-medium);
    margin: 0;
}
/* ACCESSIBILITY & ABOUT PAGE */
.accessibility, .about {
    padding: var(--section-padding-desktop);
    max-width: var(--content-max-width-wide);
    margin: 0 auto;
}
.about p:first-of-type::first-letter {
  -webkit-initial-letter: 3; /* Required for Safari */
  initial-letter: 3;         /* Sinks the letter down exactly 3 lines */
  font-weight: bold;
  margin-inline-end: var(--space-xs); /* Adds spacing between the letter and text */
  color: var(--color-accent);
}
.about p {
    font-size: var(--font-size-xl);
}
/*DETAILS ACCORDION*/
details*{
margin: 0;
}

details > * {padding: 1rem;/* font-size: var(--step-0); */}

details {background-color: var(--color-accordion-bg);overflow: hidden;border-radius: var(--radius-lg);}

/* Animation*/
  
@media (prefers-reduced-motion: no-preference) {
details .accordion-content{
transition: block-size .5s,
content-visibility .5s;
transition-behavior: allow-discrete; 
}
}
details .accordion-content {
block-size: 0;
}
details[open] .accordion-content { 
block-size: auto; 
}
details[open].details-scroll .accordion-content { 
block-size: 12rem; 
overflow-x: auto;
}
summary{/* font-size:var(--step-1); *//* font-weight:700; */display: block;padding: .5rem;border-radius: 8px;cursor: pointer;position: relative;} 
summary::before,
summary::after {
transition: .2s;
}
summary::before,
summary::after {
content: '';
}
summary::before, summary::after {inline-size: .75em;block-size: 0;border-block-end: 2px solid;position: absolute;inset-block-start: calc(50% - 1px);inset-inline-end: 1rem;transform: translateY(-50%);}
summary::after {
transform: rotate(90deg);
transform-origin: 50% 50%;
}
[open] summary::after {
transform: rotate(0deg);
}
details h4.accordion-heading {
    font-size: .75rem;
}
details p {
padding-block-end: var(--space-s);
}

summary::marker {
content: none; 
}
summary:hover{
transition: .2s ease-in; 
background-color: hsl(from var(--shade) h s calc(l + -2)); 
}

details {
outline: 0.4rem solid transparent;
} 
 
summary::-webkit-details-marker {
  display: none;
}
.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;
}

/* RESPONSIVE SPLIT LAYOUT (Overview, User Flow, Style Guide) */
#case-study h2, h3, h4 {
    font-family: var(--font-body);
}
.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6xl);
    align-items: start;
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--fw-bold);
    letter-spacing: var(--tracking-wide);
    color: var(--color-ink-900); 
}

.title-column .section-title {
    position: sticky;
    top: var(--space-2xl); /* Keeps layout title grounded on desktop scroll */
}

.content-column p, .text-column p {
    font-size: var(--font-size-base);
    color: var(--color-ink-600);
    margin-bottom: var(--space-xl);
}

.content-column .lead-text {
    font-size: var(--font-size-xl);
    color: var(--color-ink-800);
}
.visual-column {
    border-radius: var(--radius-2xl);
    background: var(--color-tint-cream);
    padding: var(--space-md);
}
.impact-column {
    display: grid;
    grid-template-columns: 300px 1fr;
    grid-template-rows: repeat(5, 1fr);
    grid-column-gap: 0px;
    grid-row-gap: 0px;
}
.portfolio-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-sm);
}
.style-guide-preview {
    margin-top: var(--space-3xl);
}

/* DUAL COLUMN LAYOUT (Problem / Solution) */

.dual-column-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6xl);
}

.subsection-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--fw-regular);
    letter-spacing: var(--tracking-tight);
    color: var(--color-ink-900);
    margin-bottom: var(--space-md);
}

/* HIGH-FIDELITY MOCKUPS SHOWCASE GRID */

.section-intro {
    margin-bottom: var(--space-5xl);
}
.section-description {
    font-size: var(--font-size-md);
    color: var(--color-ink-600);
    margin-top: var(--space-xs);
}
.mockup-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-3xl);
    border-radius: var(--radius-2xl);
    background: var(--color-tint-cream);
    padding: var(--space-md);
}
.mockup-card {
    display: flex;
    flex-direction: column;
}
.mockup-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--duration-slow) var(--ease-out-snappy), box-shadow var(--duration-slow) var(--ease-standard);
}
.mockup-caption {
    margin-bottom: var(--space-md);
    font-size: var(--font-size-md);
    color: var(--color-ink-400);
    font-weight: var(--fw-medium);
}
.mockup-card:hover .mockup-image {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.mockup-image-trigger {
    width: 100%;
    border: 0;
    background: transparent;
    padding: 0;
    text-align: left;
    cursor: zoom-in;
}
.mockup-image-trigger:focus-visible {
    outline: 3px solid var(--color-ink-800);
    outline-offset: 4px;
    border-radius: var(--radius-md);
}

/* IMAGE MODAL */

.image-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
}
.image-modal[hidden] {
    display: none;
}
.image-modal__backdrop {
    position: absolute;
    inset: 0;
    background: var(--color-modal-backdrop);
    backdrop-filter: blur(2px);
}
.image-modal__dialog {
    position: relative;
    z-index: 1;
    width: min(90vw, 900px);
    max-height: 90vh;
    overflow: auto;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--space-xl);
    animation: modalFadeIn var(--duration-modal) ease-out forwards;
}
.image-modal__close {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    width: 2.5rem;
    height: 2.5rem;
    border: 0;
    border-radius: var(--radius-pill);
    background: var(--color-modal-close-bg);
    color: var(--color-ink-800);
    font-size: var(--font-size-2xl);
    line-height: 1;
    cursor: pointer;
}
.image-modal__close:hover,
.image-modal__close:focus-visible {
    background: var(--color-ink-800);
    color: var(--color-surface);
}
.image-modal__title {
    font-family: var(--font-display);
    font-size: var(--font-size-2xl);
    color: var(--color-ink-900);
    margin-right: var(--space-4xl);
    margin-bottom: var(--space-xs);
}
.image-modal__description {
    margin: 0 0 1rem;
    color: var(--color-ink-400);
    font-size: 0.95rem;
}
.image-modal__image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

/* MEDIA QUERIES */

/* --- Homepage Media Queries --- */
@media (max-width: 768px) {
    .home-title { font-size: var(--font-size-hero-title-mobile); }
    .home-subtitle { font-size: var(--font-size-hero-subtitle-mobile); }
    .home-hero { padding: var(--space-4xl) var(--space-lg); }
    .work-featured-card { grid-template-columns: 1fr; gap: var(--space-2xl); }
    .work-image-side { height: 240px; }
}

/* --- Media Queries --- */
@media (max-width: 768px) {
    .hero-title { font-size: var(--font-size-hero-title-mobile); }
    .timeline-line { display: none; }
    .timeline-steps { overflow-x: auto; padding-bottom: var(--space-md); }
    .split-layout { grid-template-columns: 1fr; gap: var(--space-xl); }
    .dual-column-layout { grid-template-columns: 1fr; gap: var(--space-4xl); }
    #user-flow {
    display: grid;
    grid-template-columns: 1fr;
    /* Define the exact vertical stacking sequence */
    grid-template-areas: 
      "current-text"
      "current-map"
      "proposed-text"
      "proposed-map";
  }
.accessibility, .about {
    padding: var(--section-padding-mobile);
  }
  .current-text  { grid-area: current-text; }
  .current-map   { grid-area: current-map; }
  .proposed-text { grid-area: proposed-text; }
  .proposed-map  { grid-area: proposed-map; }
    .mockup-grid { grid-template-columns: 1fr; }
    .impact-column { display: block; }
    footer {display: block;}
}