/* ============================================
   Minimal Split Layout — Lorrie Liu Portfolio
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,500;1,400;1,500&family=Instrument+Sans:wght@400;500&display=swap');

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

:root {
    --bg: #ffffff;
    --text: #111111;
    --muted: #666666;
    --border: #e8e8e8;
    --font: 'Instrument Sans', -apple-system, sans-serif;
    --font-display: 'Lora', Georgia, serif;
    --left-w: 380px;
    --left-bg: #f7f4ee;
    --left-bg-img:
        radial-gradient(circle at 20% 50%, rgba(180, 160, 255, 0.12) 0%, transparent 60%),
        radial-gradient(circle at 80% 20%, rgba(255, 180, 120, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 60% 85%, rgba(120, 200, 180, 0.1) 0%, transparent 50%);
    --card-hover: #fafafa;
    --copy-btn-hover: #ccc;
    --transition: background 300ms ease, color 300ms ease, border-color 300ms ease;
}

body.dark {
    --bg: #1c1a24;
    --text: #f0f0f0;
    --muted: #9a95a8;
    --border: #2e2a38;
    --left-bg: #161416;
    --left-bg-img:
        radial-gradient(circle at 20% 50%, rgba(120, 80, 255, 0.08) 0%, transparent 60%),
        radial-gradient(circle at 80% 20%, rgba(255, 140, 60, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 60% 85%, rgba(60, 180, 140, 0.06) 0%, transparent 50%);
    --card-hover: #23202c;
    --copy-btn-hover: #444;
}

html, body {
    height: 100%;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    font-size: 17px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition: background 300ms ease, color 300ms ease;
}

/* ============ LAYOUT ============ */
.layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* ============ LEFT PANEL ============ */
.panel-left {
    width: 40%;
    flex-shrink: 0;
    height: 100vh;
    position: sticky;
    top: 0;
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    background: #f7f4ee;
    overflow: hidden;
    transition: background-color 300ms ease, border-color 300ms ease;
}

body.dark .panel-left {
    background-color: #1a1722;
}

/* Canvas sits behind all content */
#orb-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.panel-left::after {
    display: none;
}

.left-inner {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    padding: 3rem 2.5rem;
    position: relative;
    z-index: 2;
}

.left-top {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    flex: 1;
    justify-content: center;
}

.nav-logo {
    font-size: 17px;
    font-weight: 500;
    color: var(--text);
    letter-spacing: -0.01em;
    animation: heroFadeUp 0.7s ease both;
    animation-delay: 0.1s;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.75rem, 8vw, 4rem);
    font-weight: 300;
    line-height: 1.1;
    letter-spacing: -0.04em;
    color: var(--text);
    animation: heroFadeUp 0.7s ease both;
    animation-delay: 0.25s;
}

.hero-title .accent-line {
    font-style: italic;
    color: var(--muted);
}

.hero-subtitle {
    font-size: 17px;
    color: var(--muted);
    line-height: 1.7;
    font-weight: 400;
    animation: heroFadeUp 0.7s ease both;
    animation-delay: 0.45s;
}

@keyframes heroFadeUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.left-bottom {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.left-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.left-nav-link {
    font-size: 13px;
    color: var(--muted);
    text-decoration: none;
    transition: color 150ms;
    width: fit-content;
}

.left-nav-link:hover { color: var(--text); }

.left-meta {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.left-meta span {
    font-size: 12px;
    color: var(--muted);
}

/* ============ RIGHT PANEL ============ */
.panel-right {
    flex: 1;
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

/* ============ SECTIONS ============ */
.section {
    padding: 3rem 6rem;
    border-bottom: 1px solid var(--border);
}

.section-header {
    margin-bottom: 2rem;
}

.section-label {
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--muted);
}

/* ============ CASE LIST ============ */
.case-list {
    display: flex;
    flex-direction: column;
    gap: 10rem;
}

.case-card {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    transition: background 150ms;
    overflow: hidden;
}

.case-card:hover { background: var(--card-hover); }

.case-image--padded {
    background: var(--thumb-bg, #f0f0f0);
    padding: 3rem 3rem 0;
    display: flex;
    align-items: flex-end;
    position: relative;
}

.case-lock {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: none;
    padding: 0.5rem 0.6rem;
    line-height: 1;
    border-radius: 6px;
}

.case-image--padded img {
    width: 100%;
    object-fit: cover;
    object-position: top;
    filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.18));
    border-radius: 5px 5px 0 0;
}

.case-image {
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    position: relative;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 600ms;
    display: block;
}

.case-image--fit img {
    object-fit: contain;
}

.case-image--ep {
    background: linear-gradient(135deg, #e8e0f7, #d4c8f0, #c8d8f5, #dde8f7);
    background-size: 300% 300%;
    animation: epGradient 6s ease infinite;
}

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

.case-image--sp img {
    transform: scale(1.25);
    transform-origin: center center;
}

.case-card:hover .case-image--sp img {
    transform: scale(1.28);
}

.case-image--dataai {
    background: linear-gradient(135deg, #e0eaff, #c8d8f5, #ddeeff, #e8f4ff);
    background-size: 300% 300%;
    animation: epGradient 6s ease infinite;
}

.case-card:hover .case-image img {
    transform: scale(1.03);
}

.case-content {
    padding: 1.25rem 1.5rem 1.5rem;
    border-top: 1px solid var(--border);
    text-align: center;
}

.case-top {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 0.5rem;
}

.case-top::after {
    display: none;
}

.case-tag {
    font-size: 11px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.case-dot {
    font-size: 11px;
    color: var(--muted);
}

.case-year {
    font-size: 11px;
    color: var(--muted);
    letter-spacing: 0.03em;
}

.case-title {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 300;
    color: var(--text);
    letter-spacing: -0.01em;
    margin-bottom: 0.35rem;
    line-height: 1.3;
}

.case-description {
    font-size: 16px;
    color: var(--muted);
    line-height: 1.55;
}

.case-btn {
    display: inline-block;
    margin-top: 1rem;
    font-size: 12px;
    font-weight: 500;
    color: var(--text);
    border-bottom: 1px solid var(--text);
    padding-bottom: 1px;
    transition: color 150ms, border-color 150ms;
    letter-spacing: 0.01em;
}

.case-card:hover .case-btn {
    color: var(--muted);
    border-color: var(--muted);
}

/* ============ ABOUT ============ */
#about.section {
    padding-top: 120px;
    padding-bottom: 120px;
}
.about-block {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 3rem;
    align-items: start;
}

.about-photo {
    position: relative;
}

.about-photo img {
    width: 220px;
    height: 220px;
    object-fit: cover;
    object-position: top;
    display: block;
    border-radius: 50%;
}

.about-photo-circle {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

.about-photo-circle img {
    width: 100%;
    height: 115%;
    object-fit: cover;
    object-position: top;
    border-radius: 0;
    animation: panImage 8s ease-in-out infinite;
}

@keyframes panImage {
    0%   { transform: translateY(0px); }
    50%  { transform: translateY(-12px); }
    100% { transform: translateY(0px); }
}

.about-photo img[src=""] {
    display: none;
}

.about-photo-hint {
    width: 200px;
    height: 240px;
    border: 1px dashed var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    color: var(--muted);
    text-align: center;
    padding: 1rem;
}

.about-photo img[src=""]+.about-photo-hint {
    display: flex;
}

.about-photo img:not([src=""])+.about-photo-hint {
    display: none;
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.about-lead {
    font-size: 20px;
    font-weight: 400;
    color: var(--text);
    line-height: 1.65;
    letter-spacing: -0.01em;
}

.about-body {
    font-size: 16px;
    color: var(--muted);
    line-height: 1.8;
}

.about-stats {
    display: flex;
    gap: 3rem;
    padding-top: 2rem;
    margin-top: 0.5rem;
    border-top: 1px solid var(--border);
}

.about-stat {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.about-stat-number {
    font-size: 2rem;
    font-weight: 300;
    color: var(--text);
    letter-spacing: -0.03em;
    line-height: 1;
}

.about-stat-label {
    font-size: 11px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* ============ CONTACT ============ */
#contact.section {
    padding-top: 200px;
    padding-bottom: 200px;
    text-align: center;
}
.contact-block {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    align-items: center;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
}

.contact-item {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.contact-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--muted);
}

.contact-row {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-value {
    font-size: 18px;
    color: var(--text);
    text-decoration: none;
}

a.contact-value:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}

.contact-arrow {
    font-size: 16px;
    color: var(--muted);
}

.copy-btn {
    font-family: var(--font);
    font-size: 12px;
    color: var(--muted);
    background: none;
    border: 1px solid var(--border);
    padding: 0.25rem 0.75rem;
    cursor: pointer;
    transition: color 150ms, border-color 150ms;
    letter-spacing: 0.03em;
}

.copy-btn:hover {
    color: var(--text);
    border-color: var(--copy-btn-hover);
}

.copy-btn.copied {
    color: #2a9d5c;
    border-color: #2a9d5c;
}

/* ============ FOOTER ============ */
.footer {
    padding: 2rem 3rem;
    font-size: 12px;
    color: var(--muted);
    text-align: center;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1100px) {
    .layout {
        flex-direction: column;
        height: auto;
        overflow: visible;
    }

    .panel-left {
        width: 100%;
        height: auto;
        position: relative;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .left-inner {
        padding: 2rem 1.5rem;
        gap: 2rem;
    }

    .panel-right {
        height: auto;
        overflow: visible;
    }

    .section { padding: 2rem 1.5rem; }
    .footer { padding: 1.5rem; }

    .about-block {
        display: flex;
        flex-direction: column;
    }

    .about-photo {
        order: -1;
    }
}

/* ============ DARK THEME TOGGLE ============ */
.left-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.theme-toggle {
    position: fixed;
    top: 1.25rem;
    right: 1.5rem;
    z-index: 200;
    background: var(--text);
    color: var(--bg);
    border: none;
    font-family: var(--font);
    font-size: 12px;
    padding: 0.5rem 1.2rem;
    cursor: pointer;
    letter-spacing: 0.04em;
    transition: transform 150ms, opacity 150ms;
    border-radius: 20px;
    flex-shrink: 0;
    font-weight: 500;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.theme-toggle:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

@media (max-width: 1100px) {
    .theme-toggle {
        position: static;
    }
}

/* Ensure panel-right background transitions */
.panel-right {
    transition: background 300ms ease;
}

/* Dark mode: lock icon in case cards */
body.dark .case-lock svg rect,
body.dark .case-lock svg path,
body.dark .case-lock svg circle {
    stroke: #f0f0f0;
}
body.dark .case-lock svg circle[fill="#111111"] {
    fill: #f0f0f0;
}