/* ===== Variables ===== */
:root {
    --bg: #0e0d0b;
    --ink: #f5f0e8;
    --body: #b8b0a4;
    --muted: #6b6259;
    --accent: #c85a2a;
    --accent-soft: #d6956e;
    --accent-dark: #8b3a18;
    --accent-pale: rgba(200, 90, 42, 0.12);
    --accent-border: rgba(200, 90, 42, 0.2);
    --accent-border-hover: rgba(200, 90, 42, 0.3);
    --accent-glow: rgba(200, 90, 42, 0.08);
    --card: #151310;
    --card-border: rgba(255, 255, 255, 0.06);
    --grid: rgba(107, 98, 89, 0.06);
    --gradient-accent: linear-gradient(90deg, var(--accent), var(--accent-soft));
    --gradient-bg: linear-gradient(135deg, rgba(14,13,11,0) 0%, var(--accent-glow) 50%, rgba(14,13,11,0) 100%);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'DM Sans', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg);
    color: var(--body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ===== Grid background ===== */
.grid-bg {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(var(--grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
    z-index: 0;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0; left: 0; width: 100%;
    z-index: 100;
    background-color: transparent;
    -webkit-backdrop-filter: blur(0);
    backdrop-filter: blur(0);
    border-bottom: 1px solid transparent;
    transition: background-color 0.4s, backdrop-filter 0.4s, border-color 0.4s;
}

.navbar.scrolled {
    background-color: rgba(14, 13, 11, 0.92);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--card-border);
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: 'Instrument Serif', serif;
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--accent-soft);
    letter-spacing: 2px;
    transition: color 0.3s;
}

.nav-logo:hover { color: var(--accent); }

.nav-links { display: flex; gap: 32px; }

.nav-link {
    font-size: 0.85rem;
    color: var(--muted);
    transition: color 0.2s;
    position: relative;
    letter-spacing: 0.5px;
}

.nav-link:hover,
.nav-link.active { color: var(--ink); }

.nav-link::after {
    content: "";
    position: absolute;
    bottom: -4px; left: 0;
    width: 0; height: 1px;
    background-color: var(--accent);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after { width: 100%; }

.nav-toggle {
    display: none;
    flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 4px;
}

.nav-toggle span {
    display: block; width: 22px; height: 2px;
    background-color: var(--ink);
    border-radius: 1px;
    transition: transform 0.3s, opacity 0.3s;
}

/* ===== Sections ===== */
.section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px 24px;
    position: relative;
    z-index: 1;
}

.hero,
#contact {
    flex-direction: column;
    text-align: center;
}

#works {
    align-items: flex-start;
}

.container {
    max-width: 960px;
    width: 100%;
    margin: 0 auto;
}

.section-title {
    font-family: 'Instrument Serif', serif;
    font-size: 1.8rem;
    font-weight: 400;
    color: var(--ink);
    margin-bottom: 40px;
    position: relative;
    display: inline-block;
    letter-spacing: 2px;
}

.section-title::after {
    content: "";
    position: absolute;
    bottom: -8px; left: 0;
    width: 36px; height: 2px;
    background: var(--gradient-accent);
    border-radius: 1px;
}

#contact .section-title::after {
    left: 50%;
    transform: translateX(-50%);
}

.section-desc {
    color: var(--muted);
    margin-bottom: 36px;
    font-size: 0.95rem;
    font-weight: 300;
}

/* ===== Hero ===== */
.hero-content {
    /* staggered entry handled by .hero-anim children */
}

.hero-anim {
    opacity: 0;
    transform: translateY(24px);
    animation: heroReveal 0.9s cubic-bezier(0.23, 1, 0.32, 1) forwards;
}

.hero-anim:nth-child(1) { animation-delay: 0.2s; }
.hero-anim:nth-child(2) { animation-delay: 0.4s; }
.hero-anim:nth-child(3) { animation-delay: 0.7s; }
.hero-anim:nth-child(4) { animation-delay: 0.8s; }
.hero-anim:nth-child(5) { animation-delay: 1s; }

@keyframes heroReveal {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

.hero-greeting {
    font-size: 0.85rem;
    color: var(--accent);
    margin-bottom: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    font-weight: 500;
}

.hero-name {
    font-family: 'Instrument Serif', serif;
    font-size: 4rem;
    font-weight: 400;
    letter-spacing: 8px;
    margin-bottom: 16px;
    color: var(--ink);
    text-shadow: 0 0 80px rgba(200, 90, 42, 0.15);
}

.hero-line {
    width: 48px;
    height: 2px;
    background: var(--gradient-accent);
    margin: 0 auto 20px;
    border-radius: 1px;
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--muted);
    margin-bottom: 40px;
    letter-spacing: 2px;
    font-weight: 300;
}

/* scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-line {
    display: block;
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
    50%      { opacity: 1;   transform: scaleY(1); }
}

/* ===== Button ===== */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: transform 0.3s, box-shadow 0.3s, color 0.3s;
    cursor: pointer;
    border: none;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary {
    background-color: var(--accent);
    color: var(--ink);
}

.btn-primary::before {
    content: "";
    position: absolute;
    inset: 0;
    background-color: var(--accent-soft);
    transform: translateX(-101%);
    transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    z-index: -1;
}

.btn-primary:hover::before {
    transform: translateX(0);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(200, 90, 42, 0.25);
}

.btn-outline {
    background: transparent;
    color: var(--accent-soft);
    border: 1px solid var(--accent-border);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-outline::before {
    content: "";
    position: absolute;
    inset: 0;
    background-color: var(--accent);
    transform: translateX(-101%);
    transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    z-index: -1;
}

.btn-outline:hover::before {
    transform: translateX(0);
}

.btn-outline:hover {
    color: var(--ink);
    border-color: var(--accent);
}

/* ===== Works ===== */
.works-group {
    margin-bottom: 48px;
}

.works-group:last-child {
    margin-bottom: 0;
}

.works-group-title {
    font-family: 'Instrument Serif', serif;
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--accent-soft);
    margin-bottom: 20px;
    letter-spacing: 2px;
    padding-left: 14px;
    border-left: 2px solid var(--accent);
}

.works-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.work-card {
    background-color: var(--card);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--card-border);
    transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1), box-shadow 0.4s, border-color 0.4s;
    position: relative;
}

.work-card::after {
    content: "";
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 2px;
    background: var(--gradient-accent);
    transition: width 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

.work-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
    border-color: rgba(200, 90, 42, 0.15);
    cursor: pointer;
}

.work-card:hover::after {
    width: 100%;
}

.work-image {
    height: 180px;
    position: relative;
    overflow: hidden;
}

/* decorative diagonal stripe overlay */
.work-image::after {
    content: "";
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        -45deg,
        transparent,
        transparent 20px,
        rgba(200, 90, 42, 0.03) 20px,
        rgba(200, 90, 42, 0.03) 40px
    );
    pointer-events: none;
}

.work-card:nth-child(1) .work-image { background-color: #1e1b17; }
.work-card:nth-child(2) .work-image { background-color: #1a1714; }
.work-card:nth-child(3) .work-image { background-color: #161410; }

/* placeholder cards */
.work-card--placeholder {
    border-style: dashed;
    border-color: rgba(255, 255, 255, 0.04);
}

.work-card--placeholder:hover {
    transform: none;
    box-shadow: none;
    border-color: rgba(200, 90, 42, 0.1);
}

.work-card--placeholder .work-image {
    background-color: #131110 !important;
}

.work-card--placeholder .work-placeholder {
    font-size: 1.6rem;
    color: var(--muted);
    opacity: 0.4;
}

.work-card--placeholder .work-info h3 {
    color: var(--muted);
    font-size: 0.9rem;
}

.work-card--placeholder .work-info p {
    font-size: 0.75rem;
    opacity: 0.5;
}

.work-placeholder {
    font-family: 'Instrument Serif', serif;
    font-size: 1.2rem;
    color: var(--muted);
}

.work-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.work-card:hover .work-thumb { transform: scale(1.04); }

.work-info { padding: 20px; }

.work-info h3 {
    font-family: 'Instrument Serif', serif;
    font-size: 1.05rem;
    color: var(--ink);
    margin-bottom: 8px;
    font-weight: 400;
    transition: color 0.3s, transform 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    transition-delay: 0s;
}

.work-card:hover .work-info h3 {
    color: var(--accent-soft);
    transform: translateY(-2px);
}

/* gold hairline above title on hover */
.work-info {
    position: relative;
}

.work-info::before {
    content: "";
    display: block;
    width: 0;
    height: 1px;
    background: var(--accent);
    margin-bottom: 14px;
    transition: width 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.work-card:hover .work-info::before {
    width: 32px;
}

.work-info p {
    font-size: 0.82rem;
    color: var(--muted);
    margin-bottom: 12px;
    font-weight: 300;
    line-height: 1.7;
    transition: opacity 0.4s, transform 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    transition-delay: 0s;
}

.work-card:hover .work-info p {
    opacity: 0.85;
    transform: translateY(-1px);
}

.work-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.tag {
    padding: 4px 10px;
    font-size: 0.68rem;
    background: var(--accent-pale);
    color: var(--accent-soft);
    font-weight: 500;
    letter-spacing: 0.5px;
    border: 1px solid var(--accent-border);
    transition: background 0.3s, border-color 0.3s;
}

.tag:hover {
    background: rgba(200, 90, 42, 0.18);
    border-color: var(--accent-border-hover);
}

/* ===== About ===== */
.about-content {
    display: flex;
    gap: 48px;
    align-items: flex-start;
}

.about-avatar {
    position: relative;
    opacity: 0;
    transform: translateX(-32px);
    transition: opacity 0.8s cubic-bezier(0.23, 1, 0.32, 1), transform 0.8s cubic-bezier(0.23, 1, 0.32, 1);
}

.about-content.visible .about-avatar {
    opacity: 1;
    transform: translateX(0);
}

.about-text {
    opacity: 0;
    transform: translateX(32px);
    transition: opacity 0.8s cubic-bezier(0.23, 1, 0.32, 1) 0.15s, transform 0.8s cubic-bezier(0.23, 1, 0.32, 1) 0.15s;
}

.about-content.visible .about-text {
    opacity: 1;
    transform: translateX(0);
}

.avatar-img {
    width: 140px; height: 140px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center top;
    flex-shrink: 0;
    border: 2px solid var(--accent-border-hover);
    position: relative;
}

/* decorative glow ring (position & animation in .about-avatar above) */
.about-avatar::before {
    content: "";
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 1px solid rgba(200, 90, 42, 0.1);
    pointer-events: none;
}

.about-text { flex: 1; }

.about-text p {
    color: var(--body);
    margin-bottom: 16px;
    font-size: 0.9rem;
    line-height: 1.85;
    font-weight: 300;
}

.skills h3 {
    font-family: 'Instrument Serif', serif;
    font-size: 1.1rem;
    color: var(--ink);
    margin-top: 24px;
    margin-bottom: 16px;
    font-weight: 400;
    letter-spacing: 1px;
}

.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.skill-group-title {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.72rem;
    color: var(--muted);
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--card-border);
}

.skill-bars {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.skill-name {
    width: 90px;
    font-size: 0.82rem;
    color: var(--muted);
    flex-shrink: 0;
}

.skill-bar {
    flex: 1;
    height: 6px;
    background-color: rgba(255, 255, 255, 0.06);
    border-radius: 3px;
    overflow: hidden;
}

.skill-fill {
    height: 100%;
    background: var(--gradient-accent);
    border-radius: 3px;
    width: 0;
    transition: width 1.2s cubic-bezier(0.22, 1, 0.36, 1);
    position: relative;
}

/* animated shimmer on skill bar */
.skill-fill::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.12), transparent);
    animation: shimmer 2.5s infinite;
}

@keyframes shimmer {
    from { transform: translateX(-100%); }
    to   { transform: translateX(100%); }
}

.skills-grid.visible .skill-fill--90 { width: 90%; }
.skills-grid.visible .skill-fill--85 { width: 85%; }
.skills-grid.visible .skill-fill--80 { width: 80%; }
.skills-grid.visible .skill-fill--75 { width: 75%; }

/* ===== Contact ===== */
.contact-form-wrapper {
    max-width: 560px;
    margin: 0 auto;
    position: relative;
    min-height: 420px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
    transition: opacity 0.5s, transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.contact-form.hidden {
    opacity: 0;
    transform: scale(0.96) translateY(12px);
    pointer-events: none;
    position: absolute;
    inset: 0;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-label {
    font-size: 0.78rem;
    color: var(--muted);
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.required {
    color: var(--accent);
}

.form-input {
    padding: 12px 16px;
    background-color: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 6px;
    color: var(--ink);
    font-size: 0.88rem;
    font-family: inherit;
    transition: border-color 0.3s, box-shadow 0.3s;
    outline: none;
}

.form-input::placeholder {
    color: var(--muted);
    opacity: 0.6;
}

.form-input:focus {
    border-color: var(--accent-border);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-input.error {
    border-color: #c0392b;
    box-shadow: 0 0 0 3px rgba(192, 57, 43, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.6;
}

.form-error {
    font-size: 0.75rem;
    color: #e74c3c;
    min-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity 0.3s, transform 0.3s, min-height 0.3s;
}

.form-error.visible {
    opacity: 1;
    transform: translateY(0);
    min-height: 18px;
}

.btn-submit {
    align-self: flex-start;
    min-width: 140px;
    position: relative;
    z-index: 2;
}

/* ensure fill sweep doesn't block clicks on submit button */
.btn-submit::before {
    z-index: auto;
}

.btn-submit .btn-text,
.btn-submit .btn-spinner {
    transition: opacity 0.3s;
}

.btn-submit .btn-spinner {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
}

.btn-submit .btn-spinner::after {
    content: "";
    width: 18px; height: 18px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: var(--ink);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.btn-submit.loading .btn-text { opacity: 0; }
.btn-submit.loading .btn-spinner { opacity: 1; }
.btn-submit.loading { pointer-events: none; }

/* ===== Contact Success State ===== */
.contact-success {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.6s cubic-bezier(0.23, 1, 0.32, 1), transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
    pointer-events: none;
}

.contact-success.visible {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
}

.success-svg {
    width: 80px; height: 80px;
    color: var(--accent);
    margin-bottom: 20px;
}

.success-circle {
    stroke-dasharray: 289;
    stroke-dashoffset: 289;
}

.contact-success.visible .success-circle {
    animation: circleIn 1s cubic-bezier(0.23, 1, 0.32, 1) 0.1s forwards;
}

@keyframes circleIn {
    to { stroke-dashoffset: 0; }
}

.success-check {
    stroke-dasharray: 80;
    stroke-dashoffset: 80;
}

.contact-success.visible .success-check {
    animation: checkIn 0.6s cubic-bezier(0.23, 1, 0.32, 1) 0.9s forwards;
}

@keyframes checkIn {
    to { stroke-dashoffset: 0; }
}

.success-glow {
    position: absolute;
    width: 120px; height: 120px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    filter: blur(30px);
    opacity: 0;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -70%);
    transition: opacity 0.8s;
}

.contact-success.visible .success-glow {
    opacity: 1;
    transition-delay: 0.4s;
}

.success-title {
    font-family: 'Instrument Serif', serif;
    font-size: 1.4rem;
    color: var(--ink);
    font-weight: 400;
    letter-spacing: 2px;
    margin-bottom: 8px;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.5s, transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.contact-success.visible .success-title {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 1.1s;
}

.success-desc {
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 16px;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.5s, transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.contact-success.visible .success-desc {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 1.25s;
}

.success-line {
    width: 0;
    height: 1px;
    background: var(--gradient-accent);
    margin-bottom: 20px;
    transition: width 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.contact-success.visible .success-line {
    width: 48px;
    transition-delay: 1.3s;
}

.contact-success .btn-outline {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.5s, transform 0.5s cubic-bezier(0.23, 1, 0.32, 1), color 0.3s, border-color 0.3s;
}

.contact-success.visible .btn-outline {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 1.45s;
}

/* ===== Footer ===== */
.footer {
    text-align: center;
    padding: 20px;
    border-top: 1px solid var(--card-border);
    color: var(--muted);
    font-size: 0.75rem;
    font-weight: 300;
    letter-spacing: 1px;
    position: relative;
    z-index: 1;
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== Responsive: Tablet (768px) ===== */
@media (max-width: 768px) {
    .section {
        min-height: 0;
        padding: 80px 20px;
    }

    .hero { min-height: 100vh; }

    .nav-container { padding: 0 20px; }

    .nav-links {
        display: none;
        position: absolute;
        top: 60px; left: 0; width: 100%;
        flex-direction: column;
        background-color: rgba(14, 13, 11, 0.98);
        border-bottom: 1px solid var(--card-border);
        padding: 16px 20px;
    }

    .nav-links.open { display: flex; }
    .nav-links li { padding: 10px 0; }
    .nav-toggle { display: flex; }

    .hero-name { font-size: 2.4rem; letter-spacing: 4px; }

    .hero-subtitle { font-size: 0.9rem; }

    .works-group { margin-bottom: 40px; }

    .works-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .about-text { width: 100%; }

    .skills h3 { text-align: center; }

    .skills-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .skill-group-title { text-align: center; }

    .skill-item {
        flex-wrap: wrap;
        gap: 6px 12px;
    }

    .skill-name { width: 72px; font-size: 0.78rem; }
}

/* ===== Responsive: Small mobile (480px) ===== */
@media (max-width: 480px) {
    .section { padding: 60px 16px; }
    .nav-container { padding: 0 16px; }
    .nav-links { padding: 12px 16px; }

    .hero-name {
        font-size: 1.8rem;
        letter-spacing: 3px;
        word-break: break-all;
    }

    .hero-greeting { font-size: 0.75rem; }
    .hero-subtitle { font-size: 0.8rem; letter-spacing: 1px; }

    .section-title { font-size: 1.4rem; margin-bottom: 30px; }
    .section-desc { font-size: 0.85rem; }

    .works-group { margin-bottom: 36px; }
    .works-group-title { font-size: 1rem; }

    .works-grid {
        grid-template-columns: 1fr;
    }

    .work-image { height: 150px; }
    .work-info { padding: 16px; }
    .work-info h3 { font-size: 0.95rem; }

    .avatar-img {
        width: 110px; height: 110px;
    }

    .about-text p { font-size: 0.85rem; }

    .contact-form-wrapper { min-height: 380px; }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer { padding: 16px; font-size: 0.7rem; }
}

/* ===== Large desktop (1200px+) ===== */
@media (min-width: 1200px) {
    .section { padding: 120px 40px; }
    .nav-container { padding: 0 40px; }

    .hero-name { font-size: 5rem; letter-spacing: 12px; }

    .section-title { font-size: 2rem; }
    .section-desc { font-size: 1rem; }

    .work-info { padding: 24px; }
    .about-content { gap: 64px; }
}

/* ===== Project Detail Page ===== */
.project-page {
    padding: 100px 24px 60px;
    position: relative;
    z-index: 1;
}

.project-container {
    max-width: 800px;
    margin: 0 auto;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--muted);
    margin-bottom: 36px;
    padding: 8px 18px 8px 14px;
    border: 1px solid var(--card-border);
    border-radius: 6px;
    background-color: rgba(21, 19, 16, 0.6);
    transition: color 0.25s, border-color 0.25s, background-color 0.25s;
    letter-spacing: 0.5px;
}

.back-link::before {
    content: "←";
    font-size: 0.9rem;
    transition: transform 0.25s;
}

.back-link:hover {
    color: var(--accent-soft);
    border-color: var(--accent-border);
    background-color: rgba(200, 90, 42, 0.06);
}

.back-link:hover::before {
    transform: translateX(-3px);
}

.back-link--bottom {
    margin-top: 56px;
    margin-bottom: 0;
}

.project-header {
    margin-bottom: 48px;
}

.project-title {
    font-family: 'Instrument Serif', serif;
    font-size: 2.4rem;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: 4px;
    margin-bottom: 8px;
}

.project-subtitle {
    font-size: 0.88rem;
    color: var(--muted);
    margin-bottom: 16px;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.project-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.meta-item {
    font-size: 0.85rem;
    color: var(--muted);
    font-weight: 300;
    letter-spacing: 0.5px;
}

.meta-divider {
    color: var(--accent);
    opacity: 0.4;
}

.project-tools-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.project-section {
    margin-bottom: 40px;
}

.project-section-title {
    font-family: 'Instrument Serif', serif;
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--ink);
    margin-bottom: 16px;
    letter-spacing: 2px;
    position: relative;
    padding-left: 16px;
}

.project-section-title::before {
    content: "";
    position: absolute;
    left: 0; top: 50%;
    transform: translateY(-50%);
    width: 3px; height: 16px;
    background: var(--gradient-accent);
    border-radius: 2px;
}

.project-text {
    font-size: 0.9rem;
    color: var(--body);
    line-height: 1.85;
    font-weight: 300;
}

.project-list {
    list-style: none;
    padding: 0;
}

.project-list li {
    font-size: 0.88rem;
    color: var(--body);
    line-height: 1.8;
    font-weight: 300;
    padding-left: 20px;
    position: relative;
    margin-bottom: 8px;
}

.project-list li::before {
    content: "";
    position: absolute;
    left: 0; top: 10px;
    width: 8px; height: 2px;
    background-color: var(--accent);
    border-radius: 1px;
}

.project-highlights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.highlight-card {
    background-color: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 24px;
}

.highlight-card h3 {
    font-family: 'Instrument Serif', serif;
    font-size: 1rem;
    font-weight: 400;
    color: var(--ink);
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.highlight-card p {
    font-size: 0.82rem;
    color: var(--muted);
    line-height: 1.7;
    font-weight: 300;
}

/* Gallery layouts */
.gallery-hero {
    margin-bottom: 32px;
}

.gallery-pair {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.gallery-trio {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.gallery-placeholder {
    background-color: var(--card);
    border: 1px dashed rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    height: 220px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--muted);
    font-size: 0.88rem;
    transition: border-color 0.3s;
}

.gallery-placeholder:hover {
    border-color: rgba(200, 90, 42, 0.15);
}

.gallery-placeholder--hero {
    height: 360px;
    font-size: 1rem;
}

.gallery-placeholder--tall {
    height: 300px;
}

.gallery-hint {
    font-size: 0.72rem;
    opacity: 0.5;
}

.gallery-img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-radius: 8px;
    display: block;
}

.gallery-img--hero {
    height: 360px;
}

.gallery-img--tall {
    height: 300px;
}

.gallery-img--contain {
    object-fit: contain;
    background-color: var(--card);
}

.gallery-img--full {
    width: 100%;
    height: auto;
    border-radius: 8px;
    display: block;
}

.project-result-box {
    background-color: var(--card);
    border-left: 3px solid var(--accent);
    padding: 16px 24px;
    font-size: 0.9rem;
    color: var(--accent-soft);
    font-weight: 500;
    letter-spacing: 0.5px;
    border-radius: 0 8px 8px 0;
    margin-top: 16px;
}

/* Project page responsive */
@media (max-width: 768px) {
    .project-page { padding: 80px 20px 40px; }
    .project-title { font-size: 1.8rem; letter-spacing: 2px; }
    .project-highlights { grid-template-columns: 1fr; }
    .gallery-pair { grid-template-columns: 1fr; }
    .gallery-trio { grid-template-columns: 1fr; }
    .gallery-placeholder { height: 180px; }
    .gallery-placeholder--hero { height: 260px; }
    .gallery-placeholder--tall { height: 220px; }

    .gallery-img { height: 180px; }
    .gallery-img--hero { height: 260px; }
    .gallery-img--tall { height: 220px; }
}

@media (max-width: 480px) {
    .project-page { padding: 70px 16px 32px; }
    .project-title { font-size: 1.4rem; }
    .project-section-title { font-size: 1.05rem; }
}

/* work card link */
.work-card-link {
    display: block;
    text-decoration: none;
    color: 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;
}

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

    .hero-anim {
        opacity: 1;
        transform: none;
    }

    .about-avatar,
    .about-text {
        opacity: 1;
        transform: none;
    }

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