/* =============================================
   裕鋐投資 · 養生慢活團體 - 主樣式
   設計風格：自然、禪意、清新、典雅
   ============================================= */

/* ---- CSS Variables ---- */
:root {
  --green-dark:   #3d6b3d;
  --green-mid:    #5a8a4a;
  --green-light:  #7ab05a;
  --green-pale:   #d6e8c8;
  --green-bg:     #f2f7ee;
  --gold:         #b8923a;
  --gold-light:   #d4a855;
  --cream:        #faf8f2;
  --brown-light:  #8d6e4f;
  --text-dark:    #2c3e2d;
  --text-mid:     #4a5e4b;
  --text-light:   #6e8570;
  --white:        #ffffff;
  --shadow-soft:  0 4px 24px rgba(61,107,61,0.10);
  --shadow-card:  0 8px 32px rgba(61,107,61,0.12);
  --radius-sm:    8px;
  --radius-md:    16px;
  --radius-lg:    24px;
  --font-serif:   'Noto Serif TC', 'Georgia', serif;
  --font-sans:    'Noto Sans TC', 'Microsoft JhengHei', sans-serif;
  --transition:   all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--text-dark);
  background-color: var(--cream);
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; }

/* ---- Typography ---- */
.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green-mid);
  background: var(--green-pale);
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 16px;
}
.section-tag.light {
  color: var(--green-pale);
  background: rgba(255,255,255,0.15);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.35;
  margin-bottom: 20px;
}
.section-title.light { color: var(--white); }

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-light);
  max-width: 580px;
  margin: 0 auto 16px;
}
.section-subtitle.light { color: rgba(255,255,255,0.8); }

.section-text {
  font-size: 1rem;
  color: var(--text-mid);
  margin-bottom: 16px;
  line-height: 1.85;
}

.section-container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-sans);
  transition: var(--transition);
  cursor: pointer;
}
.btn-primary {
  background: var(--green-mid);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(90,138,74,0.35);
}
.btn-primary:hover {
  background: var(--green-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(90,138,74,0.45);
}
.btn-outline {
  border: 2px solid rgba(255,255,255,0.85);
  color: var(--white);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  transform: translateY(-2px);
}
.btn-submit {
  width: 100%;
  justify-content: center;
  background: var(--green-mid);
  color: var(--white);
  padding: 16px;
  border-radius: var(--radius-sm);
  font-size: 1.05rem;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(90,138,74,0.3);
  transition: var(--transition);
}
.btn-submit:hover {
  background: var(--green-dark);
  transform: translateY(-2px);
}

/* =============================================
   NAVBAR
   ============================================= */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(61,107,61,0.10);
  padding: 10px 0;
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
}
.nav-logo a { display: flex; align-items: center; }
.nav-logo-img {
  height: 120px;
  width: auto;
  object-fit: contain;
  transition: var(--transition);
  background: transparent;
  padding: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.9);
  padding: 8px 14px;
  border-radius: 50px;
  transition: var(--transition);
}
.navbar.scrolled .nav-links a { color: var(--text-mid); }
.nav-links a:hover,
.nav-links a.active {
  background: rgba(255,255,255,0.15);
  color: var(--white);
}
.navbar.scrolled .nav-links a:hover {
  background: var(--green-pale);
  color: var(--green-dark);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}
.navbar.scrolled .nav-toggle span { background: var(--text-dark); }

/* =============================================
   HERO
   ============================================= */
.hero {
  min-height: 100vh;
  position: relative;
  background: url('../images/hero-bg.jpg') center center / cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(30,60,30,0.65) 0%,
    rgba(20,45,20,0.45) 60%,
    rgba(90,60,20,0.25) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--white);
  padding: 0 24px;
  max-width: 780px;
}
.hero-subtitle {
  font-size: 0.95rem;
  letter-spacing: 0.35em;
  color: rgba(255,255,255,0.85);
  margin-bottom: 20px;
  font-weight: 300;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 24px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.25);
}
.hero-desc {
  font-size: clamp(1rem, 2vw, 1.15rem);
  line-height: 1.9;
  color: rgba(255,255,255,0.88);
  margin-bottom: 40px;
  font-weight: 300;
}
.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.65);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  z-index: 2;
}
.scroll-arrow {
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(8px); }
}

/* =============================================
   STATS BAR
   ============================================= */
.stats-bar {
  background: var(--white);
  box-shadow: var(--shadow-soft);
  padding: 40px 24px;
  position: relative;
  z-index: 10;
}
.stats-container {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 16px;
  flex-wrap: wrap;
}
.stat-item {
  text-align: center;
  min-width: 120px;
}
.stat-number {
  font-family: var(--font-serif);
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--green-mid);
  line-height: 1;
}
.stat-plus {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--gold);
}
.stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-light);
  margin-top: 6px;
  letter-spacing: 0.05em;
}
.stat-divider {
  width: 1px;
  height: 60px;
  background: var(--green-pale);
}

/* =============================================
   ABOUT
   ============================================= */
.about {
  padding: 100px 0;
  background-color: var(--cream);
}
.about .section-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.about-features {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 20px;
  background: var(--green-bg);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--green-mid);
  transition: var(--transition);
}
.feature-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-soft);
}
.feature-icon {
  color: var(--green-mid);
  font-size: 1.2rem;
  margin-top: 2px;
  flex-shrink: 0;
}
.feature-item strong {
  display: block;
  font-weight: 600;
  color: var(--green-dark);
  margin-bottom: 2px;
}
.feature-item span {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* About image */
.image-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.image-frame img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.6s ease;
}
.image-frame:hover img { transform: scale(1.04); }

.image-badge {
  position: absolute;
  bottom: 24px;
  right: 24px;
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 16px 24px;
  text-align: center;
  box-shadow: var(--shadow-card);
}
.badge-year {
  display: block;
  font-size: 0.75rem;
  color: var(--text-light);
  letter-spacing: 0.1em;
}
.badge-num {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--green-dark);
}

/* =============================================
   PHILOSOPHY
   ============================================= */
.philosophy {
  position: relative;
  padding: 100px 0;
  background: url('../images/hero-bg.jpg') center center / cover no-repeat;
  overflow: hidden;
}
.philosophy-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(20,50,20,0.78) 0%,
    rgba(20,50,20,0.72) 100%
  );
}
.philosophy .section-container { position: relative; z-index: 2; }

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.philosophy-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  text-align: center;
  color: var(--white);
  transition: var(--transition);
}
.philosophy-card:hover {
  background: rgba(255,255,255,0.14);
  transform: translateY(-6px);
  border-color: rgba(255,255,255,0.3);
}
.card-icon {
  font-size: 2.8rem;
  margin-bottom: 16px;
  display: block;
}
.philosophy-card h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}
.philosophy-card p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.78);
  line-height: 1.75;
}

/* =============================================
   SERVICES
   ============================================= */
.services {
  padding: 100px 0;
  background: var(--green-bg);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.service-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 40px 32px;
  box-shadow: var(--shadow-soft);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  border: 1px solid transparent;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green-mid), var(--gold));
  transform: scaleX(0);
  transition: transform 0.3s ease;
  transform-origin: left;
}
.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card);
  border-color: var(--green-pale);
}
.service-card:hover::before { transform: scaleX(1); }

.service-icon {
  width: 64px; height: 64px;
  background: var(--green-bg);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: var(--transition);
}
.service-icon i {
  font-size: 1.6rem;
  color: var(--green-mid);
  transition: var(--transition);
}
.service-card:hover .service-icon {
  background: var(--green-mid);
}
.service-card:hover .service-icon i {
  color: var(--white);
}

.service-card h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
}
.service-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.75;
  margin-bottom: 20px;
}
.service-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--green-mid);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.service-link:hover {
  color: var(--green-dark);
  gap: 10px;
}

/* =============================================
   CHAIRMAN
   ============================================= */
.chairman {
  padding: 100px 0;
  background: var(--cream);
  position: relative;
}
.chairman-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(214,232,200,0.35) 0%, rgba(250,248,242,0) 60%);
  pointer-events: none;
}
.chairman-inner {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 72px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.chairman-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 4px solid var(--green-pale);
}
.chairman-frame img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  object-position: top;
}
.chairman-name-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 20px 28px;
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  box-shadow: var(--shadow-soft);
  border-top: 3px solid var(--gold);
}
.chairman-name-card .name {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--green-dark);
}
.chairman-name-card .title {
  font-size: 0.85rem;
  color: var(--text-light);
  letter-spacing: 0.05em;
}

.quote-mark {
  font-family: Georgia, serif;
  font-size: 5rem;
  color: var(--green-pale);
  line-height: 0.6;
  margin-bottom: 12px;
  display: block;
}
.chairman-quote {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--green-dark);
  font-style: italic;
  line-height: 1.8;
  border-left: 3px solid var(--gold);
  padding-left: 20px;
  margin-bottom: 20px;
}
.signature-img {
  height: 50px;
  margin-top: 12px;
  opacity: 0.85;
}

/* =============================================
   VALUES
   ============================================= */
.values {
  padding: 100px 0;
  background: var(--white);
}
.values-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.value-item {
  text-align: center;
  padding: 20px;
}
.value-circle {
  width: 80px; height: 80px;
  background: var(--green-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  border: 2px solid var(--green-pale);
  transition: var(--transition);
}
.value-item:hover .value-circle {
  background: var(--green-mid);
  border-color: var(--green-mid);
  transform: scale(1.1);
}
.value-circle i {
  font-size: 1.6rem;
  color: var(--green-mid);
  transition: var(--transition);
}
.value-item:hover .value-circle i { color: var(--white); }
.value-item h4 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}
.value-item p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.75;
}

/* =============================================
   CONTACT
   ============================================= */
.contact {
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}
.contact-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    var(--green-dark) 0%,
    var(--green-mid) 60%,
    var(--green-dark) 100%
  );
}
.contact .section-container { position: relative; z-index: 2; }

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

/* Info Card */
.info-card {
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius-md);
  padding: 32px;
  margin-bottom: 20px;
}
.info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.info-item:last-child { border-bottom: none; }
.info-icon {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--white);
}
.info-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.info-content strong {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.info-content span {
  color: var(--white);
  font-size: 0.95rem;
}
.map-placeholder iframe { display: block; }

/* Form */
.contact-form {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 40px 36px;
  box-shadow: 0 20px 60px rgba(20,50,20,0.25);
}
.form-group {
  margin-bottom: 20px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-mid);
  margin-bottom: 8px;
}
.required { color: #e05c5c; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--green-pale);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--text-dark);
  background: var(--cream);
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--green-mid);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(90,138,74,0.12);
}
.form-group textarea { resize: vertical; }

.form-success {
  display: none;
  align-items: center;
  gap: 10px;
  color: var(--green-dark);
  background: var(--green-bg);
  border: 1px solid var(--green-pale);
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  margin-top: 16px;
  font-weight: 500;
}
.form-success.show { display: flex; }
.form-success i { color: var(--green-mid); font-size: 1.2rem; }

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: var(--text-dark);
  color: rgba(255,255,255,0.7);
}
.footer-top {
  max-width: 1180px;
  margin: 0 auto;
  padding: 60px 24px 40px;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: 40px;
}
.footer-logo-img {
  height: 80px;
  width: auto;
  object-fit: contain;
  margin-bottom: 12px;
  display: block;
  background: transparent;
  padding: 0;
  mix-blend-mode: screen;
}
.footer-brand p {
  font-size: 0.85rem;
  margin-bottom: 6px;
}
.footer-slogan {
  font-size: 0.82rem;
  color: var(--gold-light);
  margin-top: 8px;
  font-style: italic;
}

.footer-links-group h4 {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}
.footer-links-group ul li {
  margin-bottom: 8px;
}
.footer-links-group ul a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  transition: var(--transition);
}
.footer-links-group ul a:hover { color: var(--green-light); }

.footer-contact-info h4 {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 16px;
}
.footer-contact-info p {
  font-size: 0.85rem;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 10px;
  color: rgba(255,255,255,0.6);
}
.footer-contact-info p i { color: var(--green-light); margin-top: 2px; }

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}
.footer-social a {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.65);
  font-size: 0.9rem;
  transition: var(--transition);
}
.footer-social a:hover {
  background: var(--green-mid);
  color: var(--white);
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 24px;
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
}

/* =============================================
   GALLERY
   ============================================= */
.gallery {
  padding: 100px 0;
  background: var(--cream);
}

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

/* 第一張：佔左側兩行大圖 */
.gallery-item.gallery-large {
  grid-column: 1 / 2;
  grid-row: 1 / 3;
}

/* 最後一張：橫跨兩欄 */
.gallery-item.gallery-wide {
  grid-column: 2 / 4;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 220px;
  transition: transform 0.5s ease;
  display: block;
}

.gallery-item.gallery-large img {
  min-height: 460px;
}

.gallery-item.gallery-wide img {
  min-height: 260px;
}

.gallery-item:hover img {
  transform: scale(1.06);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(30,60,30,0.75) 0%,
    rgba(30,60,30,0) 55%
  );
  opacity: 0;
  transition: opacity 0.35s ease;
  display: flex;
  align-items: flex-end;
  padding: 20px;
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-caption {
  color: var(--white);
  font-size: 0.92rem;
  font-weight: 600;
  font-family: var(--font-serif);
  letter-spacing: 0.04em;
  text-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.lightbox.active {
  opacity: 1;
  pointer-events: all;
}
.lightbox img {
  max-width: 90vw;
  max-height: 88vh;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  object-fit: contain;
}
.lightbox-close {
  position: absolute;
  top: 24px;
  right: 28px;
  color: var(--white);
  font-size: 2rem;
  cursor: pointer;
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
  transition: var(--transition);
}
.lightbox-close:hover { background: rgba(255,255,255,0.25); }

.lightbox-caption {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.85);
  font-size: 0.95rem;
  font-family: var(--font-serif);
  letter-spacing: 0.06em;
  background: rgba(0,0,0,0.4);
  padding: 8px 24px;
  border-radius: 50px;
  white-space: nowrap;
}

/* Responsive Gallery */
@media (max-width: 768px) {
  .gallery-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
  }
  .gallery-item.gallery-large {
    grid-column: 1 / 3;
    grid-row: auto;
  }
  .gallery-item.gallery-wide {
    grid-column: 1 / 3;
  }
}

@media (max-width: 480px) {
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  .gallery-item.gallery-large,
  .gallery-item.gallery-wide {
    grid-column: 1;
  }
}

/* =============================================
   BACK TO TOP
   ============================================= */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px; height: 48px;
  background: var(--green-mid);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(90,138,74,0.35);
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
  pointer-events: none;
}
.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}
.back-to-top:hover {
  background: var(--green-dark);
  transform: translateY(-3px);
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .philosophy-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid   { grid-template-columns: repeat(2, 1fr); }
  .footer-top      { grid-template-columns: 1fr 1fr; }
  .chairman-inner  { grid-template-columns: 300px 1fr; gap: 48px; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 70px; left: 0; right: 0;
    background: rgba(255,255,255,0.97);
    padding: 20px;
    flex-direction: column;
    gap: 4px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  }
  .nav-links.open { display: flex; }
  .nav-links a { color: var(--text-mid) !important; width: 100%; text-align: center; }
  .nav-toggle { display: flex; }

  .about .section-container { grid-template-columns: 1fr; gap: 40px; }
  .chairman-inner { grid-template-columns: 1fr; }
  .chairman-frame img { height: 340px; }
  .contact-layout { grid-template-columns: 1fr; }
  .values-row { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 28px; }
  .stat-divider { display: none; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 540px) {
  .philosophy-grid { grid-template-columns: 1fr; }
  .services-grid   { grid-template-columns: 1fr; }
  .values-row      { grid-template-columns: 1fr 1fr; }
  .footer-top      { grid-template-columns: 1fr; }
  .hero-buttons    { flex-direction: column; align-items: center; }
  .btn             { width: 220px; justify-content: center; }
}