:root { 
    --bg: #f4f4f0; 
    --fg: #111; 
    --ac: #ff3300; 
    --gy-l: #ccc;
    --gy-m: #aaa;
    --gy-d: #666;
    --icon-external: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3' stroke-linecap='square' stroke-linejoin='inherit'%3E%3Cpath d='M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6'%3E%3C/path%3E%3Cpolyline points='15 3 21 3 21 9'%3E%3C/polyline%3E%3Cline x1='10' y1='14' x2='21' y2='3'%3E%3C/line%3E%3C/svg%3E");
}

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
}

body { 
    background: var(--bg); 
    color: var(--fg); 
    font-family: monospace; 
    font-size: 16px; 
    display: flex; 
    height: 100vh;
    height: 100dvh; /* Account for mobile browser address bars */
    position: relative;
}

::selection { 
    background: var(--ac); 
    color: var(--bg); 
}

header { 
    width: 400px; 
    flex-shrink: 0; 
    background: var(--ac); 
    color: var(--bg); 
    display: flex; 
    flex-direction: column; 
    justify-content: space-between; 
    padding: 3rem; 
    border-right: 6px solid var(--fg); 
    z-index: 50; 
    position: relative;
}

.header-links {
    display: flex; 
    flex-direction: column; 
    gap: 10px;
    margin-top: 2rem;
}

.header-links a {
    font-size: 1.2rem; 
    font-weight: bold; 
    color: var(--bg); 
    text-decoration: none; 
    padding: 10px 0; 
    border-bottom: 2px solid var(--bg); 
    transition: 0.1s; 
    display: flex; 
    justify-content: space-between; 
    position: relative; 
}

.header-links a::after { 
    content: ''; 
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%) translateX(-10px);
    width: 14px;
    height: 14px;
    background-color: currentColor;
    mask-image: var(--icon-external);
    -webkit-mask-image: var(--icon-external);
    mask-size: contain;
    -webkit-mask-size: contain;
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    opacity: 0; 
    transition: 0.2s;
}

/* For non-external header links, we keep the original arrow */
.header-links a:not([target="_blank"])::after {
    content: '→';
    background-color: transparent;
    mask-image: none;
    -webkit-mask-image: none;
    width: auto;
    height: auto;
}

.header-links a:hover { 
    color: var(--fg); 
    border-color: var(--fg); 
}

.header-links a:hover::after { 
    opacity: 1; 
    transform: translateY(-50%) translateX(0);
}

.link-label {
    font-weight: normal;
    opacity: 0.6;
    padding-right: 1.5rem;
    transition: 0.2s;
}

.header-titles {
    margin: auto 0;
}

h1 { 
    font-family: 'Arial Black', sans-serif; 
    font-size: 4.7rem; 
    line-height: 0.9; 
    margin: 0 0 1rem 0; 
    text-transform: uppercase; 
    letter-spacing: -2px;
    position: relative;
    width: fit-content;
}

.corner-logo {
    position: absolute;
    top: 0.05em;
    right: 0;
    width: 0.9em;
    height: 0.9em;
}

.roles { 
    font-size: 1.5rem; 
    font-weight: bold; 
    border-left: 5px solid var(--bg); 
    padding-left: 10px;
}

.main-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    scroll-snap-type: y mandatory;
    scroll-behavior: smooth;
    display: flex;
    flex-direction: column;
}

.page {
    height: 100%;
    width: 100%;
    flex-shrink: 0;
    scroll-snap-align: start;
    display: flex;
    align-items: center;
    position: relative;
    box-sizing: border-box;
}

#about {
    padding: 0;
}


.about-card-title {
    color: var(--ac);
    font-size: 1.3rem;
    font-weight: bold;
    text-transform: uppercase;
    margin-top: 0;
    display: block;
    border-bottom: none; /* override default h2 styling on desktop */
}

.about-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.about-list li {
    margin-bottom: 0.4rem;
    font-size: 0.95rem;
    position: relative;
    padding-left: 1.5rem;
}

.about-list li::before {
    content: '➔';
    position: absolute;
    left: 0;
    color: var(--ac);
}

/* Tighten typography specifically for About layout */
.about-slider .card { padding: 1.8rem; }
.about-slider p { font-size: 1.05rem; margin-bottom: 1rem; line-height: 1.4; }

/* VERTICAL PAGE INDICATORS */
.page-indicator {
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    padding: 0.85rem;
    background: transparent;
    border: none;
    font-size: 1.2rem;
    font-family: 'Arial Black', sans-serif;
    cursor: pointer;
    transition: opacity 0.4s ease, background 0.3s ease, color 0.3s ease;
    user-select: none;
}
.page-indicator:hover {
    color: var(--ac);
    background: rgba(255, 51, 0, 0.12);
}
.page-indicator.hidden {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0s; /* Disappear instantly, but allow fade-in when active */
}

/* Pseudo-element to hold the intense gradient for smooth fading */
.page-indicator::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    opacity: 0; /* Hidden by default */
}
.page-indicator.top::before {
    background: linear-gradient(to bottom, rgba(255, 51, 0, 0.45), transparent);
}
.page-indicator.bottom::before {
    background: linear-gradient(to top, rgba(255, 51, 0, 0.45), transparent);
}

.fade-pulse-top, .fade-pulse-bottom {
    animation: indicatorFadeIn 1.6s ease-out;
}
.fade-pulse-top::before, .fade-pulse-bottom::before {
    animation: indicatorPulse 1.6s ease-out;
}

@keyframes indicatorFadeIn {
    0% { opacity: 0; }
    40% { opacity: 1; }
    100% { opacity: 1; }
}
@keyframes indicatorPulse {
    0% { opacity: 0; }
    40% { opacity: 1; }
    100% { opacity: 0; }
}
.page-indicator.top {
    position: sticky;
    top: 0;
    width: 100%;
    margin-bottom: -3.5rem; /* Float over content */
    background: linear-gradient(to bottom, rgba(255, 51, 0, 0.15), transparent);
}
.page-indicator.bottom {
    position: fixed;
    bottom: 0;
    left: 502px; /* 400px width + 96px padding + 6px border */
    right: 0;
    background: linear-gradient(to top, rgba(255, 51, 0, 0.15), transparent);
}

/* SLIDER WITH SNAP */
.slider-page {
    display: block; /* override flex from .page */
}

.slider-wrapper { 
    position: relative; 
    overflow: hidden; 
    height: 100%;
    width: 100%;
}

.slider { 
    width: 100%; 
    height: 100%; 
    display: flex; 
    gap: 3rem; 
    padding: 3.5rem 3rem; 
    box-sizing: border-box; 
    overflow-x: auto; 
    scroll-snap-type: x mandatory; 
    scroll-behavior: smooth; 
    scroll-padding: 0 3rem;
}

.slider::-webkit-scrollbar { 
    height: 16px; 
}

.slider::-webkit-scrollbar-track { 
    background: var(--bg); 
    border-top: 4px solid var(--fg); 
    border-bottom: none; 
}

.slider::-webkit-scrollbar-thumb { 
    background: var(--fg); 
    border: 2px solid var(--bg); 
}

.slider::-webkit-scrollbar-thumb:hover { 
    background: var(--ac); 
}

/* HIT AREAS FOR ARROWS */
.hit-area { 
    background: transparent;
    border: none;
    padding: 0 .1rem;
    font: inherit;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    position: absolute; 
    top: 0; 
    bottom: 16px; 
    z-index: 40; 
    cursor: pointer; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    transition: background 0.2s, opacity 0.2s; 
    user-select: none; 
    -webkit-user-select: none;
    -webkit-mask-image: linear-gradient(to bottom, transparent, black 40%, black 60%, transparent);
    mask-image: linear-gradient(to bottom, transparent, black 40%, black 60%, transparent);
}

.hit-area.left { left: 0; }
.hit-area.right { right: 0; }
.hit-area.hidden { opacity: 0; pointer-events: none; }

.hit-overlay { 
    font-family: 'Arial Black', sans-serif; 
    font-size: 6rem; 
    line-height: 1; /* Keep height tight to the text */
    color: rgba(255, 51, 0, 0); 
    transition: 0.2s; 
    pointer-events: none; 
    mix-blend-mode: multiply;
}

.hit-area:hover {
    background: rgba(255, 51, 0, 0.05); /* very gentle tracking box */
}

.hit-area:hover .hit-overlay { 
    color: rgba(255, 51, 0, 0.15); 
    transform: scale(1.1);
}

.hit-area:active .hit-overlay { 
    color: rgba(255, 51, 0, 0.3); 
    transform: scale(0.9);
}

/* CARDS */
.col { 
    width: 385px; 
    flex-shrink: 0; 
    display: flex; 
    flex-direction: column; 
    scroll-snap-align: start; 
    cursor: pointer; 
    position: relative; 
    z-index: 20;
}

.no-click {
    cursor: default;
}

.card { 
    border: 4px solid var(--fg); 
    background: #fff; 
    padding: 2rem; 
    display: flex; 
    flex-direction: column; 
    flex: 1; 
    box-shadow: 8px 8px 0 var(--fg); 
    transition: 0.2s;
}

@media (hover: hover) and (pointer: fine) {
    .col:hover .card:not(.card-process) { 
        transform: translate(-4px, -4px); 
        box-shadow: 12px 12px 0 var(--fg); 
        border-color: var(--ac); 
    }

    .col:hover {
        border-color: var(--fg);
    }
}

.combo-col { gap: 2rem; }
.combo-col > .card { flex: 1; justify-content: space-between;}

h2 { 
    border-bottom: 4px solid var(--ac); 
    margin-bottom: 0; 
    margin-top: 0; 
    text-transform: uppercase; 
    display: inline-block; 
    font-size: 1.5rem;
}

.hl { 
    color: var(--ac); 
    font-weight: bold; 
    background: var(--bg); 
    padding: 2px 5px;
}

p { 
    font-size: 1.1rem; 
    line-height: 1.5; 
    margin-bottom: 1.5rem;
}

.project-title { 
    font-family: 'Arial Black', sans-serif; 
    font-size: 3rem; 
    line-height: 1; 
    margin: 1rem 0; 
    text-transform: uppercase; 
    color: var(--fg);
}

.links { 
    display: flex; 
    flex-direction: column; 
    gap: 10px;
}

.links a { 
    font-size: 1.2rem; 
    font-weight: bold; 
    color: var(--fg); 
    text-decoration: none; 
    padding: 10px 0; 
    border-bottom: 2px solid var(--fg); 
    transition: 0.1s; 
    display: flex; 
    justify-content: space-between; 
    position: relative; 
    z-index: 30;
}

.links a::after { 
    content: ''; 
    display: inline-block;
    width: 12px;
    height: 12px;
    background-color: currentColor;
    mask-image: var(--icon-external);
    -webkit-mask-image: var(--icon-external);
    mask-size: contain;
    -webkit-mask-size: contain;
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    opacity: 0; 
    transition: 0.2s;
}

.links a:not([target="_blank"])::after {
    content: '→';
    background-color: transparent;
    mask-image: none;
    -webkit-mask-image: none;
    width: auto;
    height: auto;
}

.links a:hover { 
    color: var(--ac); 
    border-color: var(--ac); 
}

.links a:hover::after { 
    opacity: 1; 
}

.btn { 
    display: block; 
    background: var(--fg); 
    font-family: 'Arial Black', sans-serif; 
    font-size: 1.2rem; 
    text-align: center; 
    text-decoration: none; 
    color: var(--bg); 
    padding: 1rem; 
    margin-top: 1rem; 
    border: 4px solid var(--fg); 
    transition: 0.2s; 
    position: relative; 
    z-index: 30;
}

.btn[target="_blank"]::after {
    content: '';
    position: absolute;
    top: 0.8rem;
    right: 0.8rem;
    width: 14px;
    height: 14px;
    background-color: currentColor;
    mask-image: var(--icon-external);
    -webkit-mask-image: var(--icon-external);
    mask-size: contain;
    -webkit-mask-size: contain;
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    opacity: 0.4;
    transition: 0.2s;
}

.btn[target="_blank"]:hover::after {
    opacity: 1;
    transform: scale(1.1);
}

.btn:hover { 
    background: var(--ac); 
    border-color: var(--ac); 
    color: var(--bg); 
    transform: translate(-4px, -4px); 
    box-shadow: 8px 8px 0 var(--fg);
}

/* CARDS / INLINE STYLE REPLACEMENTS */
.card-artifact { box-shadow: 8px 8px 0 var(--ac); }
@media (hover: hover) and (pointer: fine) {
    .col:hover .card-artifact { box-shadow: 12px 12px 0 var(--ac); }
}

.h2-active { color: var(--ac); border-color: var(--ac); }
.project-actions { margin-top: auto; display: flex; flex-direction: column; gap: 0.5rem; }
.btn-outline { background: transparent; color: var(--fg); }

/* WIP BUTTON STYLING */
.btn-wip {
    background: transparent;
    color: #111; /* Consistent with your --fg */
    border-color: #111;
}

.card-concept { background: transparent; box-shadow: 8px 8px 0 var(--gy-l); }
.text-concept { border-color: var(--gy-m); }
.h2-concept { color: var(--gy-m); border-color: var(--gy-m); }
.desc-concept { color: var(--gy-d); }

.col-end {
    justify-content: center;
    align-items: center;
    width: calc(50vw - 200px);
    min-width: 100px;
    max-width: 200px;
    padding: 2rem;
    box-sizing: border-box;
}
.end-text { transform: rotate(-90deg); font-family: 'Arial Black', sans-serif; font-size: 4rem; color: var(--gy-l); white-space: nowrap; opacity: 0.5; }

.accent-orange { color: var(--ac); }

.mobile-nav-btn {
    display: none;
}

/* DESKTOP RESPONSIVE EXTENSIONS */
@media (min-width: 1025px) {
    .about-slider {
        display: grid;
        grid-template-columns: 1fr 1fr;
        grid-template-rows: repeat(10, 1fr);
        gap: 3rem;
        padding: 4rem 3.5rem;
        width: 100%;
        max-width: 1400px;
        max-height: 880px; /* Constrain max height so columns don't stretch forever */
        align-content: center;
        margin: auto;
        overflow: visible;
        scroll-snap-type: none;
        box-sizing: border-box;
    }
    
    .about-col {
        width: auto;
        scroll-snap-align: none;
        cursor: default; /* Disable pointer cursor on desktop About cards */
    }

    .about-item-1 { grid-column: 1; grid-row: 1 / 6; }
    .about-item-2 { grid-column: 1; grid-row: 6 / 11; }
    .about-item-3 { grid-column: 2; grid-row: 1 / 5; }
    .about-item-4 { grid-column: 2; grid-row: 5 / 11; }
    
    .about-slider .card {
        height: 100%;
    }
}

/* MID-SIZE DESKTOP (Laptops, smaller monitors) */
@media (max-width: 1600px) and (min-width: 1025px) {
    header {
        width: 340px; /* Reduced by 15% from 400px */
        padding: 2.5rem;
    }
    h1 {
        font-size: 4rem; /* Scaled down proportionally */
    }
    .roles {
        font-size: 1.3rem;
    }
    .page-indicator.bottom {
        left: 426px; /* 340px width + 80px padding + 6px border */
    }
    .about-slider {
        padding: 3rem 1.5rem 5rem 1.5rem; /* Tighter side margins, extra bottom padding to clear the PORTFOLIO indicator */
        gap: 2rem; /* Less gap space */
    }
    
    /* Slight typography adjustments */
    .about-slider .card { padding: 1.5rem; }
    .about-slider p { font-size: 1rem; margin-bottom: 1rem; }
    h3.about-card-title { font-size: 1rem; }
}

/* RESPONSIVE DESIGN */
@media (max-width: 1024px) {
    .page-indicator.bottom {
        left: 0;
        right: 10px; /* Stop before overlapping the vertical scrollbar */
        bottom: 10px; /* Match the 10px slider scrollbar height exactly */
        background: linear-gradient(to top, rgba(255, 51, 0, 0.22), transparent); /* slightly darker on mobile */
    }
    
    /* Clean up page indicators for smaller screens */
    .indicator-label, .indicator-arrow {
        display: none;
    }
    .page-indicator {
        min-height: 72px;
    }
    .page-indicator.top {
        margin-bottom: -72px; /* Perfectly offset min-height to prevent document shift */
        background: linear-gradient(to bottom, rgba(255, 51, 0, 0.22), transparent); /* slightly darker on mobile */
    }
    .page-indicator.top::before {
        background: linear-gradient(to bottom, rgba(255, 51, 0, 0.75), transparent); /* Darker pulse on mobile */
    }
    .page-indicator.bottom::before {
        background: linear-gradient(to top, rgba(255, 51, 0, 0.75), transparent); /* Darker pulse on mobile */
    }
    /* Force visible vertical scrollbar on mobile to show there are rows */
    .main-content {
        overflow-y: scroll;
    }
    .main-content::-webkit-scrollbar {
        -webkit-appearance: none;
        appearance: none;
        width: 14px;
        display: block;
        background-color: var(--bg);
    }
    .main-content::-webkit-scrollbar-track {
        background: var(--bg);
        border-left: 3px solid var(--fg);
    }
    .main-content::-webkit-scrollbar-thumb {
        background: var(--fg);
        border: 2px solid var(--bg);
    }

    /* Make horizontal scrollbar thicker on mobile */
    .slider::-webkit-scrollbar {
        height: 14px;
    }
    .slider::-webkit-scrollbar-thumb {
        border: 2px solid var(--bg);
    }

    body {
        flex-direction: column;
    }
    
    .page {
        align-items: stretch; /* Forces scrollbar to absolute bottom edge */
    }

    header {
        width: 100%;
        padding: 2rem; /* Taller on tablet */
        border-right: none;
        border-bottom: none; /* Removed horizontal line */
        align-items: flex-start;
        box-sizing: border-box;
        position: relative;
    }
    .mobile-nav-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        position: absolute;
        top: 1.5rem;
        right: 2rem;
        width: 3.5rem;
        height: 3.5rem;
        background: var(--fg);
        color: var(--bg);
        border: none;
        cursor: pointer;
        z-index: 200;
        transition: 0.2s;
    }
    /* Notification dot for the button */
    .mobile-nav-btn::after {
        content: '';
        position: absolute;
        top: -6px;
        right: -6px;
        width: 14px;
        height: 14px;
        background: var(--ac);
        border: 4px solid var(--bg);
        border-radius: 50%;
        transition: 0.2s;
    }
    body.nav-open .mobile-nav-btn {
        background: var(--ac);
        color: var(--bg);
        transform: rotate(45deg);
    }
    body.nav-open .mobile-nav-btn::after {
        opacity: 0;
    }
    .header-titles {
        margin: 0;
        width: 100%;
        display: flex;
        flex-direction: column;
        padding-right: 4.5rem; /* keep text away from button */
        box-sizing: border-box; /* Fixes overflow zoom issue */
    }
    h1 {
        font-size: 2.4rem; /* 10% bigger than mobile */
        margin: 0;
    }
    .corner-logo {
        position: static;
        display: inline-block;
        vertical-align: middle;
        margin-left: 0.2em;
        margin-right: 0.1em;
        margin-bottom: 0.15em;
    }
    /* Let the name sit on one line on tablets/mobile */
    h1 br {
        display: none;
    }
    h1::after {
        content: " "; /* add space when br is hidden */
    }
    .roles {
        font-size: 1.2rem; /* Extrapolated up 10% */
        border-top: none;
        border-bottom: none;
        border-left: 5px solid var(--bg); /* Restored left vertical bar */
        padding: 0 0 0 10px;
        margin-top: 0.5rem;
    }
    .header-links {
        display: none;
        width: 100%;
        margin-top: 1.5rem;
        flex-direction: column;
    }
    body.nav-open .header-links {
        display: flex;
        border-top: 4px solid var(--fg); /* stark brutalist divider when open */
        padding-top: 1rem;
    }
    .header-links a {
        border: none;
        border-bottom: 2px solid var(--bg);
        padding: 0.8rem 0;
        font-size: 1.2rem;
        justify-content: space-between;
    }
    .header-links a:last-child {
        border-bottom: none;
    }
    .header-links a::after {
        display: none;
    }
    .link-label {
        display: inline;
        opacity: 0.6;
    }
    .slider {
        padding: 1rem 1.5rem; /* Tighter vertical padding */
        scroll-padding: 0 1.5rem;
        gap: 1.5rem;
        overflow-y: hidden;
        align-items: center; /* keep cards vertically centered if constrained */
    }
    .hit-area {
        display: none; /* Hide hover arrows on touch devices/smaller screens */
    }
    .col { 
        width: 80vw;
        max-width: 300px; /* Prevent cards from getting too wide on tablets */
        height: 100%;
        min-height: 400px; 
        max-height: 700px;
        -webkit-tap-highlight-color: transparent; /* Prevent default touch highlight */
    }
    .col-end {
        width: 50vw; /* Center the last card beautifully on mobile without header math */
        min-width: 150px;
    }
    .card {
        padding: 1.2rem;
    }
    .card-content {
        margin-top: 0;
    }
    .combo-col {
        gap: 1.2rem;
    }
    p {
        line-height: 1.3;
        margin-top: 0;
        margin-bottom: 0.75rem;
    }
    .project-title {
        height: auto;
        font-size: 2.2rem;
        margin: 1rem 0;
    }
    .project-actions {
        gap: 0.25rem;
    }
    .btn {
        padding: 0.75rem;
        font-size: 1.1rem;
    }
}

@media (max-width: 600px) {
    header {
        padding: 1.25rem;
    }
    .mobile-nav-btn {
        top: 1.5rem;
        right: 1rem;
        width: 3rem;
        height: 3rem;
        font-size: 1.4rem;
    }
    h1 { 
        font-size: 1.6rem; 
    }
    .roles {
        font-size: 0.95rem;
    }
    .slider {
        padding: 0.8rem 1rem; /* Slightly reduced horizontal, but enough vertical to clear scrollbars */
        scroll-padding: 0 1rem;
        gap: 1rem;
    }
    .col { width: 85vw; }
    .card {
        padding: 1rem;
    }
    .about-col {
        min-height: 420px;
    }
    .btn {
        padding: 0.5rem;
        font-size: 0.95rem;
        margin-top: 0.5rem;
    }
    .project-actions {
        gap: 0.3rem; /* Tighter button stack */
    }
    p {
        font-size: 0.95rem; /* Tighter body text */
        margin-bottom: 0.5rem;
    }
    h2 {
        font-size: 1.25rem; /* Smaller artifact/about headers */
        margin-bottom: 0.25rem;
    }
    .about-card-title {
        color: var(--fg);
        font-size: 1.25rem; /* Match h2 */
        border-bottom: 4px solid var(--ac);
        display: inline-block;
        margin-bottom: 0.25rem;
    }
    .about-slider .card {
        padding: 1rem;
    }
    .about-slider p {
        font-size: 0.95rem;
        margin-bottom: 0.5rem;
    }
    .project-title {
        font-size: 1.8rem; /* Smaller project title */
    }
}

@media (max-width: 345px) {
    .corner-logo {
        position: static;
        display: inline-block;
        vertical-align: middle;
        margin-left: 1em;
        margin-bottom: 0.15em;
    }
}