/*************** ALL PAGES ***************/

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

:root {
    --nav-height: 84px;
    --nav-side-padding: 50px;
    --gray-dark: #1b1b1b;
    --gray-mid: #565b68;
    --gray-light-1: #f3f4f6;
    --gray-light-2: #d7d9df;
    --surface-overlay-94: rgba(243, 244, 246, 0.94);
    --surface-overlay-98: rgba(243, 244, 246, 0.98);
    --color-page: var(--gray-light-2);
    --color-surface: var(--gray-light-1);
    --color-surface-muted: var(--gray-light-1);
    --color-border: var(--gray-light-2);
    --color-text: var(--gray-dark);
    --color-muted: var(--gray-mid);
    --color-accent: #bb86fc;
    --shadow-soft: 0 12px 24px rgba(15, 23, 42, 0.08);
    --hero-surface-gradient:
        linear-gradient(160deg, var(--gray-dark) 0%, var(--gray-dark) 100%);
}

body {
    font-family: "Be Vietnam Pro", sans-serif;
    font-weight: 400;
    background-color: var(--color-page);
    color: var(--color-text);
    line-height: 1.45;
}

section {
    padding: 50px 0;
    background-color: var(--color-page);
    color: var(--color-text);
}

.contents {
    width: min(86%, 1240px);
    height: 100%;
    margin: 0 auto;
}

@media screen and (max-width: 1100px) {
    .contents {
        width: min(90%, 1240px);
    }
}

@media screen and (max-width: 700px) {
    section {
        padding: 40px 0;
    }

    .contents {
        width: min(92%, 1240px);
    }
}

/*************** FONT STYLES ***************/

h1 {
    font-size: 4em;
}

@media screen and (max-width: 960px) {
    h1 {
        font-size: 3.5em;
    }
}

p {
    margin-bottom: 10px;
    color: var(--color-muted);
}

ul {
    list-style: none;
}

li {
    color: var(--color-muted);
}

a {
    color: var(--color-accent);
}

.header {
    color: var(--color-text);
}

.subheader {
    color: var(--color-muted);
}

h2,
h3 {
    color: var(--color-text);
}

/*************** HERO SECTION (ALL PAGES) ***************/

.hero {
    height: 75vh;
    padding-top: calc(var(--nav-height));
    background-image: linear-gradient(rgba(14, 0, 47, 0.8), rgba(14,0,47,0.5)), url("./assets/hero-background.jpg");
    background-size: cover;
    background-position: center;
    align-content: center;
    color: white;
}

.hero-description {
    font-weight: 400;
}

.hero-contents {
    width: 80%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.hero-contents ul {
    font-size: 1.2em;
}

/*************** HOME HERO ***************/

.home-hero {
    height: auto;
    padding: calc(var(--nav-height) + 120px) 0 70px;
    color: #f5f2fa;
    background-image: var(--hero-surface-gradient);
    background-size: 100% 100%;
    background-position: 0 0;
    background-color: var(--gray-dark);
}

.home-hero .hero-contents {
    position: relative;
    z-index: 1;
    width: min(80%, 1080px);
    gap: 18px;
    align-items: center;
    text-align: center;
}

.home-hero h1 {
    color: #f5f2fa;
    font-size: clamp(3rem, 7vw, 5.2rem);
    line-height: 0.95;
}

.home-hero .hero-description {
    max-width: 700px;
    margin: 0 auto;
    color: #d7cee6;
    font-size: clamp(1.1rem, 2vw, 1.45rem);
    line-height: 1.45;
    font-weight: 500;
}

@media screen and (max-width: 1024px) {
    .home-hero {
        min-height: 66vh;
        padding: calc(var(--nav-height) + 56px) 0 60px;
    }

    .home-hero .hero-contents {
        width: 88%;
    }
}

/*************** NAVIGATION BAR ***************/

.top-nav {
    width: 100%;
    height: var(--nav-height);
    position: fixed;
    top: 0;
    left: 0;
    padding: 0 var(--nav-side-padding);
    display: flex;
    align-items: center;
    justify-content: flex-start;
    background-color: var(--surface-overlay-94);
    backdrop-filter: blur(8px);
    z-index: 1000;
}

.top-nav-menu {
    display: flex;
    align-items: center;
    order: 1;
}

.top-nav-left {
    display: flex;
    align-items: center;
    gap: 12px;
    justify-content: flex-start;
}

.top-nav-right {
    order: 2;
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: auto;
    justify-content: flex-end;
    z-index: 2;
}

.top-nav-left a {
    padding: 10px 18px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    color: var(--gray-dark);
    transition: background-color 0.2s ease, color 0.2s ease;
}

.top-nav-left a:hover,
.top-nav-left a.selected {
    background-color: var(--gray-dark);
    color: var(--gray-light-1);
}

.top-nav-center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    padding: 0 12px;
    font-size: 1.6em;
    font-weight: 700;
    text-decoration: none;
    color: var(--gray-dark);
    white-space: nowrap;
    z-index: 2;
}

.nav-toggle {
    order: 3;
    display: none;
    width: 42px;
    height: 42px;
    margin: 0 0 0 10px;
    padding: 0;
    border: 0;
    border-radius: 10px;
    background: transparent;
    color: var(--gray-dark);
    cursor: pointer;
}

.nav-toggle:hover {
    background-color: rgba(27, 27, 27, 0.12);
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    margin: 4px auto;
    background-color: var(--gray-dark);
    border-radius: 10px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.top-nav.is-open .nav-toggle span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.top-nav.is-open .nav-toggle span:nth-child(2) {
    opacity: 0;
}

.top-nav.is-open .nav-toggle span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

.top-nav-right a {
    width: 40px;
    height: 40px;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    border-radius: 10px;
    font-size: 1.3em;
    color: var(--gray-dark);
    transition: background-color 0.2s ease, color 0.2s ease;
}

.top-nav-right a:hover {
    background-color: var(--gray-dark);
    color: var(--gray-light-1);
}

@media screen and (max-width: 1024px) {
    :root {
        --nav-height: 74px;
        --nav-side-padding: 20px;
    }

    .top-nav-center {
        position: static;
        transform: none;
        font-size: 1.15em;
        margin-right: auto;
        padding: 0;
    }

    .nav-toggle {
        display: inline-block;
        position: relative;
        z-index: 2;
        margin-left: 8px;
    }

    .top-nav-menu {
        display: none;
        position: absolute;
        top: calc(100% + 10px);
        right: var(--nav-side-padding);
        width: min(280px, calc(100vw - (var(--nav-side-padding) * 2)));
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 14px;
        border-radius: 10px;
        background-color: var(--surface-overlay-98);
        box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
        z-index: 3;
    }

    .top-nav.is-open .top-nav-menu {
        display: flex;
    }

    .top-nav-left {
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
    }

    .top-nav-left a {
        display: block;
        width: 100%;
        padding: 9px 12px;
        font-size: 0.95em;
    }

    .top-nav-right {
        margin-left: 0;
        gap: 8px;
    }

    .top-nav-right a {
        width: 30px;
        height: 30px;
        font-size: 0.95em;
    }
}

@media screen and (max-width: 700px) {
    :root {
        --nav-height: 70px;
        --nav-side-padding: 14px;
    }

    .top-nav-left {
        gap: 4px;
    }

    .top-nav-left a {
        padding: 6px 8px;
    }

    .top-nav-center {
        font-size: 1em;
    }

    .top-nav-menu {
        width: min(240px, calc(100vw - (var(--nav-side-padding) * 2)));
    }

    .top-nav-left a {
        font-size: 0.9em;
    }
}

/*************** PROJECT GRID ***************/

body.home-page,
body.about-page {
    background-image: var(--hero-surface-gradient);
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-size: cover;
}

@media (hover: none), screen and (max-width: 1200px) {
    body.home-page,
    body.about-page {
        background-attachment: scroll;
    }
}

.home-projects {
    padding: 8px 0 72px;
    background-color: transparent;
}

.home-projects .contents {
    padding: 0;
    border: 0;
    border-radius: 10px;
    background-color: transparent;
    box-shadow: none;
}

.project-header {
    margin-bottom: 18px;
    color: var(--color-text);
    font-size: clamp(2.2rem, 5vw, 3.2rem);
}

.home-projects .project-header {
    color: var(--gray-light-1);
}

.home-projects .contents > .project-tags {
    margin-bottom: 30px;
}

.card-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

@media screen and (max-width: 1100px) {
    .card-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

.card {
    width: 100%;
    height: auto;
    position: relative;
    padding: 0;
    border: 0;
    border-radius: 10px;
    background-color: transparent;
    box-shadow: none;
    transition: transform 0.22s ease;
    overflow: visible;
}

.card-img {
    width: 100%;
    height: clamp(220px, 34vw, 460px);
    margin-top: 0;
    display: block;            
    object-fit: cover;
    border-radius: 10px;
    transition: scale 0.25s ease;
}

.card-link {
    display: block;
    color: inherit;
    text-decoration: none;
    cursor: pointer;
    border-radius: 10px;
}

@media screen and (max-width: 1100px) {
    .card-img {
        height: clamp(250px, 58vw, 560px);
    }
}

@media screen and (max-width: 700px) {
    .card-img {
        height: clamp(220px, 62vw, 340px);
    }
}

.card:hover,
.card:focus-within {
    transform: none;
    box-shadow: none;
}

.card:hover .card-img,
.card:focus-within .card-img {
    scale: 1.005;
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.25);
}

.card-grid a {
    text-decoration: none;
    color: inherit;
}

.project-tags {
    width: 100%;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 10px;
}

.card .project-tags {
    margin: 14px 0 10px;
}

.home-projects .card .project-tags {
    margin: 14px 0 15px;
}

.tag {
    margin: 0;
    padding: 5px 15px;
    text-align: center;
    border: var(--color-accent) solid 2px;
    border-radius: 10px;
    background-color: rgba(187, 134, 252, 0.1);
    color: var(--color-accent);
    font-size: 0.86rem;
    font-weight: 600;
}

.tag.is-active {
    background-color: var(--gray-dark);
    border-color: var(--gray-dark);
    color: var(--gray-light-1);
}

.home-projects .contents > .project-tags .tag:hover,
.home-projects .contents > .project-tags .tag.is-active {
    background-color: rgba(187, 134, 252, 1);
    border-color: rgba(187, 134, 252, 1);
    color: var(--gray-light-1);
}

.card .header {
    margin-bottom: 6px;
    font-size: 1.35rem;
    line-height: 1.25;
    text-transform: none;
}

.home-projects .card .header {
    color: var(--gray-light-1);
}

.home-projects .card .subheader {
    color: var(--gray-light-2);
}

@media screen and (max-width: 900px) {
    .home-projects .contents {
        padding: 0;
    }
}

/*************** INDIVIDUAL PROJECT PAGES ***************/

.two-cols {
    display: flex;
    flex-direction: row;
    gap: 20px
}

.first {
    width: 20%;
}

.second {
    width: 80%;
}

@media screen and (max-width: 1240px) {
    .two-cols {
        flex-direction: column;
        gap: 0px;
    }
    .first {
        width: 100%;
    }
    .second {
        width: 100%;
    }
}

.cover-img {
    width: 100%;
    height: clamp(320px, 80vh, 940px);
    object-fit: cover;
    margin-top: 30px;
    border-radius: 10px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 1.3em;
}

th, td {
  padding: 5px 30px 5px 0px;
}

th {
    width: 10%;
    text-align: left;
}

img {
    width: 100%;
    margin-bottom: 20px;
    border-radius: 10px;
}

video {
    width: 100%;
    margin-bottom: 20px;
    border-radius: 10px;
}

iframe {
    width: 100%;
    height: clamp(280px, 72vh, 600px);
    border-radius: 10px;
}

/*************** PROJECT CASE STUDY SPLIT LAYOUT ***************/

.project-case-study {
    min-height: 100vh;
    padding: calc(var(--nav-height) + 50px) 50px 50px;
    background: var(--hero-surface-gradient);
}

.project-case-wrap {
    max-width: 1700px;
    height: calc(100vh - var(--nav-height) - 24px);
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(340px, 39%) minmax(0, 61%);
    gap: 24px;
}

.project-case-left,
.project-case-right {
    border-radius: 10px;
    overflow: hidden;
    -webkit-mask-image: -webkit-radial-gradient(white, black);
}

.project-case-left {
    padding: 40px 34px;
    background-color: var(--color-surface);
    box-shadow: inset 0 0 0 1px var(--color-border);
    overflow-x: hidden;
    overflow-y: auto;
}

.project-case-left h1 {
    margin-bottom: 16px;
    color: var(--color-text);
    font-size: clamp(2.8rem, 6vw, 4rem);
    line-height: 0.95;
}

.project-case-kicker {
    margin-bottom: 14px;
    color: var(--color-muted);
    letter-spacing: 0.08em;
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 700;
}

.project-case-intro {
    margin-bottom: 14px;
    color: var(--color-muted);
    font-size: 1.1rem;
    line-height: 1.45;
}

.project-meta-grid {
    margin: 18px 0 28px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.project-meta-grid h3 {
    margin-bottom: 6px;
    color: var(--color-text);
    font-size: 1rem;
}

.project-meta-grid p {
    margin-bottom: 0;
    color: var(--color-muted);
    font-size: 0.98rem;
}

.project-accordion-group {
    margin-bottom: 26px;
    border-top: 1px solid var(--color-border);
}

.project-accordion {
    border-bottom: 1px solid var(--color-border);
}

.project-accordion summary {
    list-style: none;
    cursor: pointer;
    padding: 14px 0;
    color: var(--color-text);
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.project-accordion summary::-webkit-details-marker {
    display: none;
}

.project-accordion summary::after {
    content: "+";
    color: var(--color-text);
    font-size: 1.6rem;
    font-weight: 500;
    line-height: 1;
}

.project-accordion[open] summary::after {
    content: "\2212";
}

.project-accordion-content {
    padding: 0 0 16px;
}

.project-accordion-content p {
    color: var(--color-muted);
    margin-bottom: 0;
    line-height: 1.5;
}

.project-accordion-content ul {
    list-style: disc;
    padding-left: 20px;
}

.project-accordion-content li {
    color: var(--color-muted);
}

.project-prototype-link {
    display: inline-block;
    padding: 10px 16px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 700;
    color: var(--gray-light-1);
    background-color: var(--gray-dark);
}

.project-prototype-link:hover {
    color: var(--gray-light-1);
    background-color: var(--gray-mid);
}

.project-case-right {
    padding: 0 0px 0px;
    position: relative;
    overflow-x: hidden;
    overflow-y: auto;
    background: transparent;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.project-scroll-hint {
    position: absolute;
    right: 14px;
    top: 14px;
    margin: 0;
    padding: 6px 10px;
    border: 1px solid rgba(243, 244, 246, 0.4);
    border-radius: 999px;
    background-color: rgba(27, 27, 27, 0.74);
    color: var(--gray-light-1);
    font-size: 0.72rem;
    font-weight: 600;
    line-height: 1;
    letter-spacing: 0.02em;
    pointer-events: none;
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 3;
}

.project-case-right.can-scroll .project-scroll-hint {
    opacity: 1;
    transform: translateY(0);
}

.project-case-right.scrolled .project-scroll-hint {
    opacity: 0;
    transform: translateY(-6px);
}

.project-case-right::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 64px;
    background: linear-gradient(180deg, rgba(27, 27, 27, 0) 0%, rgba(27, 27, 27, 0.38) 100%);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 2;
}

.project-case-right.can-scroll::after {
    opacity: 1;
}

.project-case-right.scrolled::after {
    opacity: 0;
}

.project-visual-card {
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 10px;
    background: transparent;
}

.project-visual-card img,
.project-visual-card video {
    width: 100%;
    display: block;
    margin: 0;
    border-radius: 10px;
}

.project-visual-card figcaption {
    margin-top: 8px;
    color: #d7dbeb;
    font-size: 0.86rem;
    letter-spacing: 0.03em;
}

@media screen and (max-width: 1200px) {
    .project-case-study {
        padding: calc(var(--nav-height) + 16px) 14px 14px;
    }

    .project-case-wrap {
        height: auto;
        grid-template-columns: 1fr;
    }

    .project-case-right {
        min-height: 52vh;
    }
}

@media screen and (max-width: 700px) {
    .project-case-left {
        padding: 28px 20px;
    }

    .project-case-left h1 {
        font-size: clamp(2rem, 11vw, 2.8rem);
    }

    .project-case-intro {
        font-size: 1rem;
    }

    .project-meta-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .project-case-right {
        min-height: 44vh;
        gap: 10px;
    }

    table {
        font-size: 1rem;
    }

    th,
    td {
      padding: 5px 12px 5px 0px;
    }
}

/*************** ABOUT ME ***************/

#about {
    padding-top: calc(var(--nav-height) + 50px);
    padding-bottom: 18px;
}

#background {
    padding-top: 12px;
    padding-bottom: 58px;
}

.about-panel {
    background-color: transparent;
}

.about-panel .contents {
    padding: 34px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    background-color: var(--color-surface);
    box-shadow: var(--shadow-soft);
}

.about-panel h2,
.about-panel h3 {
    color: var(--color-text);
}

.about-panel h3 {
    margin-top: 12px;
}

.about-panel p,
.about-panel li {
    color: var(--color-muted);
}

.about-panel p {
    margin-bottom: 0;
}

.about-panel hr {
    border: 0;
    border-top: 1px solid var(--gray-mid);
    margin: 8px 0 16px;
}

#about .two-cols {
    display: flex;
    flex-direction: row;
    gap: 50px;
}

@media screen and (max-width: 920px) {
    #about .two-cols {
        flex-direction: column;
        gap: 20px;
    }
}

#about .first {
    width: 30%;
}

@media screen and (max-width: 920px) {
    #about .first {
        width: 100%;
        max-width: none;
        height: clamp(240px, 52vw, 360px);
        align-self: stretch;
    }
}

#about .second {
    width: 70%;
}

@media screen and (max-width: 920px) {
    #about .second {
        width: 100%;
    }
}

.headshot {
    width: 100%;
    height: 100%;
    display: block;
    margin: 0;
    object-fit: cover;
    object-position: center top;
}

#background .two-cols {
    display: flex;
    flex-direction: row;
    gap: 50px;
}

@media screen and (min-width: 1101px) {
    #background .contents > .two-cols + .two-cols {
        margin-top: 32px;
    }
}

@media screen and (max-width: 1100px) {
    #background .two-cols {
        flex-direction: column;
        gap: 24px;
    }

    #background .contents > .two-cols + .two-cols {
        margin-top: 24px;
    }
}

#background .first {
    width: 50%;
}

@media screen and (max-width: 1100px) {
    #background .first {
        width: 100%;
    }
}

#background .second {
    width: 50%;
}

@media screen and (max-width: 1100px) {
    #background .second {
        width: 100%;
    }
}

@media screen and (max-width: 900px) {
    .about-panel .contents {
        padding: 22px;
    }
}

/*************** BUTTON ***************/

button {
    margin: 40px 0px;
    border: #BB86FC solid 2px;
    border-radius: 10px;
    font-family: "Be Vietnam Pro", sans-serif;
    font-size: 1.2em;
    background-color: rgba(187, 134, 252, 0);
    color: #BB86FC;
}

button:hover { 
    background-color: rgba(187, 134, 252, 100);
    color: white;
}