/* ════════════════════════════════════════
   DESIGN TOKENS
   Clean white · botanical green · humanist type
   Inspired by sierra.ai — no dividers, image-forward,
   generous whitespace, rounded UI
════════════════════════════════════════ */
:root {
    --white:       #FFFFFF;
    --off-white:   #F8F8F5;
    --green-bg:    #F0FAF4;
    --border:      #E8E6E0;

    --text:        #111110;
    --text-2:      #5E5C57;
    --text-3:      #A8A6A0;

    --green:       #1B7A47;
    --green-dark:  #155E38;
    --green-mid:   rgba(27, 122, 71, 0.12);

    --font: 'Plus Jakarta Sans', sans-serif;

    --max-w:     1100px;
    --pad-x:     60px;
    --pad-s:     110px;   /* section vertical padding */

    --r-card:    20px;
    --r-btn:     100px;

    --shadow-card: 0 1px 2px rgba(0,0,0,0.06), 0 8px 32px rgba(0,0,0,0.07);
    --shadow-img:  0 2px 4px rgba(0,0,0,0.08), 0 16px 48px rgba(0,0,0,0.10);
}

/* ════════════════════════════════════════
   RESET
════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    background: var(--white);
    color: var(--text);
    font-family: var(--font);
    font-weight: 400;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

/* ════════════════════════════════════════
   LAYOUT
════════════════════════════════════════ */
.container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 var(--pad-x);
}
section { padding: var(--pad-s) 0; }

/* ════════════════════════════════════════
   SCROLL REVEAL
════════════════════════════════════════ */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition:
        opacity   0.7s cubic-bezier(0.22, 1, 0.36, 1),
        transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-d1 { transition-delay: 0.08s; }
.reveal-d2 { transition-delay: 0.16s; }
.reveal-d3 { transition-delay: 0.24s; }
.reveal-d4 { transition-delay: 0.32s; }

/* ════════════════════════════════════════
   NAV
════════════════════════════════════════ */
nav {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 100;
    padding: 0 var(--pad-x);
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255,255,255,0);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease, background 0.3s ease, box-shadow 0.3s ease;
}
nav.scrolled {
    opacity: 1;
    pointer-events: auto;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 var(--border);
}
.nav-brand {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    letter-spacing: -0.01em;
}
.nav-center {
    display: flex;
    gap: 36px;
}
.nav-center a {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-2);
    transition: color 0.18s ease;
}
.nav-center a:hover { color: var(--text); }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font);
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1;
    border-radius: var(--r-btn);
    padding: 10px 22px;
    transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
    white-space: nowrap;
    cursor: pointer;
}
.btn-green {
    background: var(--green);
    color: #fff;
    border: 1.5px solid var(--green);
}
.btn-green:hover { background: var(--green-dark); border-color: var(--green-dark); }

.btn-outline {
    background: transparent;
    color: var(--text);
    border: 1.5px solid var(--border);
}
.btn-outline:hover { border-color: #C0BDB7; background: var(--off-white); }

/* ════════════════════════════════════════
   HERO
════════════════════════════════════════ */
#hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.hero-inner {
    padding: 48px var(--pad-x);
    max-width: var(--max-w);
    margin: 0 auto;
    width: 100%;
}
.hero-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--green);
    background: var(--green-mid);
    border-radius: 100px;
    padding: 5px 14px;
    margin-bottom: 32px;
    opacity: 0;
    animation: fadeUp 0.6s 0.1s cubic-bezier(0.22,1,0.36,1) forwards;
}
.hero-label-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--green);
    flex-shrink: 0;
}
h1.hero-name {
    font-size: clamp(3.8rem, 9vw, 8.5rem);
    font-weight: 800;
    line-height: 1.0;
    letter-spacing: -0.04em;
    color: var(--text);
    margin-bottom: 28px;
    opacity: 0;
    animation: fadeUp 0.7s 0.22s cubic-bezier(0.22,1,0.36,1) forwards;
}
.hero-desc {
    font-size: clamp(1.05rem, 1.8vw, 1.25rem);
    font-weight: 400;
    color: var(--text-2);
    max-width: 560px;
    line-height: 1.65;
    margin-bottom: 44px;
    opacity: 0;
    animation: fadeUp 0.7s 0.34s cubic-bezier(0.22,1,0.36,1) forwards;
}
.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeUp 0.7s 0.46s cubic-bezier(0.22,1,0.36,1) forwards;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(18px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ════════════════════════════════════════
   ABOUT
════════════════════════════════════════ */
#about { background: var(--off-white); }

.about-grid {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 72px;
    align-items: start;
}
.about-photo-wrap {
    position: sticky;
    top: 88px;
}
.about-photo {
    width: 100%;
    aspect-ratio: 3/4;
    border-radius: var(--r-card);
    overflow: hidden;
    box-shadow: var(--shadow-img);
    background: #DDE8E2;
}
.about-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

.about-eyebrow {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--green);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 18px;
}
.about-content h2 {
    font-size: clamp(2rem, 3.5vw, 2.8rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 28px;
    color: var(--text);
}
.about-bio {
    font-size: 1.05rem;
    color: var(--text-2);
    line-height: 1.8;
    margin-bottom: 18px;
}
.about-meta {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 0;
}
.meta-row {
    display: flex;
    align-items: baseline;
    gap: 16px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
}
.meta-row:first-child { border-top: 1px solid var(--border); }
.meta-key {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-3);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    min-width: 120px;
    flex-shrink: 0;
}
.meta-val {
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text);
}
.meta-val-stack {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

/* ════════════════════════════════════════
   SKILLS
════════════════════════════════════════ */
#skills { background: var(--white); }

.skills-header {
    margin-bottom: 64px;
}
.skills-eyebrow {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--green);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 16px;
}
.skills-header h2 {
    font-size: clamp(2rem, 3.5vw, 2.8rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
    color: var(--text);
    max-width: 520px;
}

.skills-groups {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px 80px;
}
.skill-group-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-3);
    letter-spacing: 0.07em;
    text-transform: uppercase;
    margin-bottom: 16px;
}
.skill-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.pill {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-2);
    background: var(--off-white);
    border: 1px solid var(--border);
    border-radius: 100px;
    padding: 6px 16px;
    transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
    cursor: default;
}
.pill:hover {
    background: var(--green-mid);
    color: var(--green);
    border-color: rgba(27,122,71,0.2);
}

/* ════════════════════════════════════════
   PROJECTS
════════════════════════════════════════ */
#projects { background: var(--off-white); }

.projects-header {
    margin-bottom: 52px;
}
.projects-eyebrow {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--green);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 16px;
}
.projects-header h2 {
    font-size: clamp(2rem, 3.5vw, 2.8rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
    color: var(--text);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.project-card {
    background: var(--white);
    border-radius: var(--r-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s cubic-bezier(0.22,1,0.36,1),
                box-shadow 0.3s cubic-bezier(0.22,1,0.36,1);
}
.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.06), 0 20px 56px rgba(0,0,0,0.12);
}
.project-img {
    aspect-ratio: 16/10;
    overflow: hidden;
    background: #DDE8E2;
    flex-shrink: 0;
}
.project-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.22,1,0.36,1);
}
.project-card:hover .project-img img {
    transform: scale(1.03);
}
.project-body {
    padding: 28px 32px 32px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}
.project-tag {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--green);
    background: var(--green-bg);
    border-radius: 100px;
    padding: 3px 12px;
    letter-spacing: 0.03em;
}
.project-card h3 {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.25;
    color: var(--text);
    margin-bottom: 10px;
}
.project-desc {
    font-size: 0.92rem;
    color: var(--text-2);
    line-height: 1.75;
    flex: 1;
}

/* ════════════════════════════════════════
   CONTACT
════════════════════════════════════════ */
#contact {
    background: var(--green-bg);
}
.contact-inner {
    text-align: center;
    max-width: 620px;
    margin: 0 auto;
}
.contact-eyebrow {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--green);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 20px;
}
.contact-inner h2 {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.12;
    color: var(--text);
    margin-bottom: 18px;
}
.contact-sub {
    font-size: 1.05rem;
    color: var(--text-2);
    line-height: 1.7;
    margin-bottom: 44px;
}
.contact-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}
.contact-links {
    display: flex;
    gap: 32px;
    justify-content: center;
    align-items: center;
}
.contact-link {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-2);
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color 0.18s ease;
}
.contact-link:hover { color: var(--green); }
.contact-link-arrow { font-size: 0.75rem; }

/* ════════════════════════════════════════
   FOOTER
════════════════════════════════════════ */
footer {
    border-top: 1px solid var(--border);
    background: var(--white);
    padding: 24px var(--pad-x);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.footer-copy,
.footer-right {
    font-size: 0.78rem;
    color: var(--text-3);
    font-weight: 400;
}

/* ════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════ */
@media (max-width: 900px) {
    :root {
        --pad-x: 32px;
        --pad-s: 80px;
    }
    .about-grid          { grid-template-columns: 1fr; gap: 48px; }
    .about-photo-wrap    { position: static; max-width: 280px; }
    .skills-groups       { grid-template-columns: 1fr; gap: 36px; }
    .projects-grid       { grid-template-columns: 1fr; }
    .nav-center          { display: none; }
}
@media (max-width: 560px) {
    :root { --pad-x: 20px; --pad-s: 60px; }
    h1.hero-name         { font-size: clamp(3rem, 13vw, 4.5rem); }
    .hero-actions        { flex-direction: column; align-items: flex-start; }
    .contact-links       { flex-direction: column; gap: 16px; }
    footer               { flex-direction: column; gap: 8px; text-align: center; }
}