/* ═══════════════════════════════════════════════
   Feifei Li — Shared Site Styles
   Responsive: 15" laptop → 27" monitor
═══════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;700&family=Karla:wght@400;600;700&display=swap');

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Karla', sans-serif;
  background: #FAFAF8;
  color: #2a2622;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }

/* ═══ NAV BAR ═══ */
.site-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #eee;
  padding: 0 clamp(2rem, 5vw, 6rem);
}
.nav-inner {
  max-width: 1600px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.nav-brand {
  font-family: 'Playfair Display', serif;
  font-weight: 700; font-size: clamp(18px, 1.5vw, 22px);
  color: #C8501A; letter-spacing: -0.5px;
  text-decoration: none;
}
.nav-brand em {
  font-family: 'Karla', sans-serif;
  font-weight: 400; font-size: 13px; color: #aaa;
  letter-spacing: 0; font-style: normal; margin-left: 8px;
}
.nav-links { display: flex; gap: clamp(20px, 3vw, 40px); list-style: none; }
.nav-links a {
  font-size: clamp(13px, 1.1vw, 16px); font-weight: 400; color: #444;
  text-decoration: none; border-bottom: 2px solid transparent;
  padding-bottom: 2px; transition: all 0.15s;
}
.nav-links a:hover { color: #C8501A; }
.nav-links a.active { color: #C8501A; font-weight: 700; border-bottom-color: #C8501A; }

/* ═══ HERO ═══ */
.hero {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 4vw, 5rem); align-items: center;
  padding: clamp(3rem, 5vw, 6rem) clamp(2rem, 5vw, 6rem);
  max-width: 1600px; margin: 0 auto;
}
.hero-badge {
  display: inline-block; background: #FFF3ED; color: #C8501A;
  font-size: clamp(11px, 0.9vw, 13px); font-weight: 700; letter-spacing: 2px;
  padding: 6px 16px; border-radius: 20px;
  margin-bottom: 1.5rem; text-transform: uppercase;
}
.hero h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 3.5vw, 4.2rem);
  font-weight: 700; line-height: 1.15;
  color: #1a1a1a; margin-bottom: 1.5rem;
}
.hero h1 .accent { color: #C8501A; }
.hero p.lead {
  font-size: clamp(16px, 1.3vw, 20px); color: #555; line-height: 1.75;
  margin-bottom: 2.5rem;
}
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  border: none; border-radius: 8px;
  padding: clamp(12px, 1vw, 16px) clamp(20px, 2vw, 32px);
  font-family: 'Karla', sans-serif; font-weight: 700;
  font-size: clamp(14px, 1vw, 17px); cursor: pointer; text-decoration: none;
  display: inline-block; transition: all 0.2s;
}
.btn-primary { background: #C8501A; color: #fff; }
.btn-primary:hover { background: #A03E12; }
.btn-outline { background: transparent; color: #C8501A; border: 2px solid #C8501A; }
.btn-outline:hover { background: #FFF3ED; }

/* ═══ PHOTO FRAMES ═══ */
.photo-frame {
  background: #f0f0ee; border: 1px solid #eee;
  border-radius: 12px; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.photo-frame img { width: 100%; height: 100%; object-fit: cover; display: block; }
.photo-stack { display: flex; flex-direction: column; gap: 12px; }
.photo-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* ═══ SECTIONS ═══ */
.section {
  max-width: 1600px; margin: 0 auto;
  padding: clamp(3rem, 4vw, 5rem) clamp(2rem, 5vw, 6rem);
}
.section-full {
  background: #fff; border-top: 1px solid #eee;
  padding: clamp(3rem, 4vw, 5rem) 0; margin-top: 2rem;
}
.section h2 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.8rem, 2.5vw, 3rem); color: #1a1a1a; margin-bottom: 0.4rem;
}
.section .subtitle {
  font-family: 'Playfair Display', serif;
  font-size: clamp(0.95rem, 1vw, 1.2rem); color: #C8501A;
  font-style: italic; margin-bottom: 3rem;
}

/* ═══ STORY GRID ═══ */
.story-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 3vw, 3.5rem);
}
.story-card { border-left: 3px solid #C8501A; padding-left: 1.25rem; }
.story-card h3 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(0.95rem, 1vw, 1.15rem); color: #C8501A; margin-bottom: 0.75rem;
}
.story-card p { font-size: clamp(14px, 1vw, 17px); color: #555; line-height: 1.8; }

/* ═══ PROJECT CARDS ═══ */
.pillar-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(16px, 2vw, 32px); }
.pillar-card {
  border: 1px solid #eee; border-radius: 16px; overflow: hidden;
  background: #fff; box-shadow: 0 2px 16px rgba(0,0,0,0.06);
  transition: transform 0.2s, box-shadow 0.2s;
}
.pillar-card:hover { transform: translateY(-3px); box-shadow: 0 8px 28px rgba(0,0,0,0.1); }
.pillar-photo {
  height: clamp(160px, 15vw, 240px); background: #f0f0ee;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.pillar-photo img { width: 100%; height: 100%; object-fit: cover; }
.pillar-body { padding: clamp(1.25rem, 2vw, 2rem); }
.pillar-head { display: flex; align-items: center; gap: 10px; margin-bottom: 0.75rem; }
.pillar-head .icon { font-size: clamp(20px, 1.5vw, 26px); }
.pillar-head h3 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1rem, 1.1vw, 1.3rem); margin: 0;
}
.pillar-body p { font-size: clamp(14px, 1vw, 16px); color: #555; line-height: 1.7; margin-bottom: 1rem; }
.tag-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 1rem; }
.tag {
  background: #f5f5f5; color: #444;
  font-size: clamp(11px, 0.8vw, 13px); font-weight: 600;
  padding: 4px 12px; border-radius: 20px;
}
.pillar-link {
  display: inline-block; margin-top: 8px;
  font-size: 13px; font-weight: 700;
  text-decoration: none; padding-bottom: 2px;
}

/* ═══ APP CARDS ═══ */
.app-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(16px, 2vw, 32px); }
.app-card {
  background: #fff; border: 1px solid #e4ede7;
  border-radius: 16px; padding: clamp(1.5rem, 2vw, 2.5rem);
  box-shadow: 0 2px 12px rgba(0,0,0,0.05); transition: all 0.3s;
}
.app-card:hover { box-shadow: 0 8px 28px rgba(0,0,0,0.1); transform: translateY(-3px); }
.app-card .icon { font-size: clamp(36px, 3vw, 52px); margin-bottom: 14px; }
.app-card .free-badge {
  display: inline-block; background: #e8f5e9; color: #1e7a46;
  font-size: 11px; font-weight: 700; padding: 3px 10px;
  border-radius: 12px; margin-bottom: 12px; letter-spacing: 0.05em;
}
.app-card h3 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(20px, 1.5vw, 26px); color: #1a1a1a; margin-bottom: 10px;
}
.app-card p { font-size: clamp(14px, 1vw, 16px); color: #555; line-height: 1.7; margin-bottom: 16px; }

/* ═══ INTEREST CARDS ═══ */
.interest-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: clamp(12px, 1.5vw, 20px); margin-bottom: 3rem;
}
.interest-card {
  background: #fff; border: 1px solid #eee;
  border-radius: 14px; padding: clamp(1rem, 1.5vw, 1.5rem);
  display: flex; align-items: flex-start; gap: 14px;
}
.interest-card .icon { font-size: clamp(22px, 1.8vw, 30px); }
.interest-card .label { font-weight: 700; font-size: clamp(13px, 1vw, 16px); color: #1a1a1a; }
.interest-card .sub { font-size: clamp(11px, 0.8vw, 14px); color: #888; margin-top: 2px; }

/* ═══ ACHIEVEMENT CARDS ═══ */
.ach-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(14px, 1.5vw, 24px); }
.ach-card {
  background: #fff; border: 1px solid #eee; border-radius: 14px;
  padding: clamp(1.25rem, 2vw, 2rem); box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}
.ach-card .emoji { font-size: clamp(24px, 2vw, 34px); margin-bottom: 10px; }
.ach-card h4 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(0.95rem, 1vw, 1.15rem); margin: 0 0 6px;
}
.ach-card p { font-size: clamp(13px, 0.9vw, 15px); color: #888; line-height: 1.6; }

/* ═══ CONTACT ═══ */
.contact-section {
  max-width: 900px; margin: 0 auto;
  padding: clamp(3rem, 5vw, 6rem); text-align: center;
}
.contact-photo {
  width: clamp(200px, 20vw, 320px);
  height: clamp(240px, 24vw, 380px);
  margin: 0 auto; border-radius: 16px; overflow: hidden; background: #f0f0ee;
}
.contact-photo img { width: 100%; height: 100%; object-fit: cover; }
.contact-links { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; margin-top: 2rem; }
.contact-link {
  background: #fff; border: 1.5px solid #C8501A;
  color: #C8501A; border-radius: 10px;
  padding: clamp(10px, 1vw, 14px) clamp(18px, 2vw, 28px);
  font-weight: 700; font-size: clamp(13px, 1vw, 16px);
  text-decoration: none; transition: all 0.2s;
}
.contact-link:hover { background: #FFF3ED; }

/* ═══ FOOTER ═══ */
.site-footer {
  border-top: 1px solid #eee;
  padding: 2rem clamp(2rem, 5vw, 6rem);
  display: flex; justify-content: space-between;
  align-items: center; background: #fff; margin-top: 4rem;
}
.site-footer .brand {
  font-family: 'Playfair Display', serif;
  font-size: clamp(16px, 1.2vw, 20px); color: #C8501A; font-weight: 700;
}
.site-footer .tag-line { font-size: clamp(12px, 0.9vw, 14px); color: #aaa; }

/* ═══ RESPONSIVE — tablet ═══ */
@media (max-width: 1100px) {
  .interest-grid { grid-template-columns: repeat(3, 1fr); }
  .ach-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ═══ FILTER BAR ═══ */
.filter-bar {
  display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 2.5rem;
}
.filter-pill {
  background: #f5f5f5; border: 1.5px solid #e8e8e8;
  border-radius: 20px; padding: 7px 18px;
  font-family: 'Karla', sans-serif; font-size: 13px; font-weight: 600;
  color: #666; cursor: pointer; transition: all 0.15s;
}
.filter-pill:hover { border-color: #C8501A; color: #C8501A; }
.filter-pill.active { background: #C8501A; color: #fff; border-color: #C8501A; }

/* ═══ HAMBURGER ═══ */
.hamburger {
  display: none; background: none; border: none;
  font-size: 26px; cursor: pointer; color: #444; padding: 4px 8px;
  line-height: 1;
}

/* ═══ SECTION HEADING GROUP ═══ */
.section-head-group { margin-bottom: 2rem; }
.section-head-group h3 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.2rem, 1.5vw, 1.5rem);
  margin-bottom: 0.25rem;
}
.section-head-group p { color: #888; font-size: clamp(13px, 1vw, 15px); }

/* ═══ PROJECT 3-COL GRID ═══ */
.project-grid-3 {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2vw, 24px); margin-bottom: 3rem;
}

/* ═══ RESPONSIVE — tablet ═══ */
@media (max-width: 1100px) {
  .project-grid-3 { grid-template-columns: 1fr 1fr; }
}

/* ═══ RESPONSIVE — mobile/small laptop ═══ */
@media (max-width: 768px) {
  .hero { grid-template-columns: 1fr; text-align: center; }
  .btn-row { justify-content: center; }
  .story-grid { grid-template-columns: 1fr; }
  .pillar-grid, .app-grid { grid-template-columns: 1fr; }
  .interest-grid { grid-template-columns: 1fr 1fr; }
  .ach-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { gap: 14px; }
  .project-grid-3 { grid-template-columns: 1fr; }
  .footer-links { flex-wrap: wrap; justify-content: center; gap: 12px; }
}

@media (max-width: 600px) {
  .hamburger { display: block; }
  .nav-links {
    display: none; position: absolute;
    top: 64px; left: 0; right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(12px);
    flex-direction: column; padding: 1rem 2rem;
    border-bottom: 1px solid #eee;
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    gap: 0; z-index: 99;
  }
  .nav-links.open { display: flex; }
  .nav-links li { padding: 12px 0; border-bottom: 1px solid #f0f0f0; }
  .nav-links li:last-child { border-bottom: none; }
  .interest-grid, .ach-grid { grid-template-columns: 1fr; }
  .site-footer { flex-direction: column; gap: 8px; text-align: center; }
}

/* ═══ LIGHTBOX ═══ */
.lightbox-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(0,0,0,0.88);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s;
}
.lightbox-overlay.active { opacity: 1; pointer-events: auto; }
.lightbox-img {
  max-width: 92vw; max-height: 90vh;
  border-radius: 8px; box-shadow: 0 8px 40px rgba(0,0,0,0.5);
  object-fit: contain;
}
.lightbox-close {
  position: absolute; top: 20px; right: 28px;
  font-size: 36px; color: #fff; cursor: pointer;
  line-height: 1; font-weight: 300;
}
.lightbox-close:hover { color: #C8501A; }

/* ═══ SLIDESHOW ═══ */
.slideshow {
  position: relative; border-radius: 12px; overflow: hidden;
  background: #111;
}
.slideshow-slide { display: none; }
.slideshow-slide img {
  width: 100%; height: 400px; object-fit: contain;
  background: #111; cursor: zoom-in;
}
.slideshow-caption {
  text-align: center; padding: 8px 12px;
  font-size: 13px; color: #888; background: #fff;
}
.ss-prev, .ss-next {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(0,0,0,0.45); color: #fff; border: none;
  font-size: 28px; width: 44px; height: 44px; border-radius: 50%;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: background 0.2s; z-index: 2;
}
.ss-prev { left: 10px; }
.ss-next { right: 10px; }
.ss-prev:hover, .ss-next:hover { background: rgba(200,80,26,0.8); }
.slideshow-dots {
  display: flex; justify-content: center; gap: 8px;
  padding: 10px 0; background: #fff;
}
.slideshow-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: #ddd; border: none; cursor: pointer; padding: 0;
  transition: background 0.2s;
}
.slideshow-dot.active { background: #C8501A; }

/* ═══ ACHIEVEMENT PHOTOS (In Photos grid) ═══ */
.ach-photo {
  border-radius: 12px; overflow: hidden; background: #f0f0ee;
}
.ach-photo img {
  width: 100%; height: 100%; object-fit: cover;
  cursor: zoom-in; display: block;
}

/* ═══ SECTION LABELS ═══ */
.section-label {
  font-family: 'Karla', sans-serif;
  font-size: clamp(11px, 0.9vw, 13px);
  font-weight: 700; letter-spacing: 3px;
  text-transform: uppercase;
  color: #C8501A; margin-bottom: 1rem;
}

/* ═══ HERO HEADLINE (redesign) ═══ */
.hero-headline {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 4vw, 3.8rem);
  font-weight: 700; line-height: 1.12;
  color: #1a1a1a; margin-bottom: 1.5rem;
}

/* ═══ SELECTED WORK CARDS ═══ */
.selected-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2vw, 24px);
}
.selected-card {
  background: #fff; border: 1px solid #eee;
  border-radius: 14px; overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.05);
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none; color: inherit; display: block;
}
.selected-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.1);
}
.selected-header {
  padding: clamp(1.25rem, 2vw, 1.75rem);
  color: #fff; min-height: 100px;
  display: flex; flex-direction: column; justify-content: flex-end;
}
.selected-badge {
  font-size: 10px; font-weight: 800;
  letter-spacing: 1px; text-transform: uppercase;
  background: rgba(255,255,255,0.2);
  padding: 3px 10px; border-radius: 12px;
  display: inline-block; width: fit-content;
  margin-bottom: 0.75rem;
}
.selected-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.1rem, 1.3vw, 1.4rem);
  font-weight: 700;
}
.selected-body {
  padding: clamp(1rem, 1.5vw, 1.5rem);
}
.selected-body p {
  font-size: clamp(13px, 0.95vw, 15px);
  color: #555; line-height: 1.7;
  margin-bottom: 1rem;
}

/* ═══ WHY FEIFEI ═══ */
.why-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2vw, 28px); margin-top: 2rem;
}
.why-card {
  background: #fff; border: 1px solid #eee;
  border-radius: 14px; padding: clamp(1.5rem, 2vw, 2.5rem);
  text-align: center;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  transition: transform 0.2s, box-shadow 0.2s;
}
.why-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}
.why-icon {
  font-size: clamp(2rem, 3vw, 3rem);
  margin-bottom: 1rem;
}
.why-card h3 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.1rem, 1.2vw, 1.35rem);
  color: #C8501A; margin-bottom: 0.75rem;
}
.why-card p {
  font-size: clamp(13px, 0.95vw, 15px);
  color: #555; line-height: 1.7;
}

/* ═══ FOOTER LINKS ═══ */
.footer-links {
  display: flex; gap: 20px; align-items: center;
}
.footer-links a {
  font-size: clamp(12px, 0.9vw, 14px);
  color: #888; text-decoration: none;
  font-weight: 600; transition: color 0.15s;
}
.footer-links a:hover { color: #C8501A; }

/* ═══ RESPONSIVE — selected/why ═══ */
@media (max-width: 900px) {
  .selected-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .footer-links { flex-wrap: wrap; justify-content: center; gap: 12px; }
}