/* ==========================================================================
   Reusable Components
   ========================================================================== */

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background var(--duration-fast) var(--ease), color var(--duration-fast) var(--ease), transform var(--duration-fast) var(--ease), border-color var(--duration-fast) var(--ease);
  white-space: nowrap;
}

.btn svg { transition: transform var(--duration-fast) var(--ease); }
.btn:hover svg { transform: translateX(3px); }

.btn-primary {
  background: var(--gold);
  color: var(--color-white);
}
.btn-primary:hover { background: var(--walnut); }

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-color);
}
.btn-secondary:hover { border-color: var(--gold); color: var(--walnut); }

.btn-ghost {
  background: transparent;
  color: var(--text-on-dark);
  border: 1px solid rgba(255,255,255,0.4);
}

.btn-sm { padding: 10px 20px; font-size: 14px; }
.btn-cta-line { font-size: 17px; }
.btn-cta-measure { font-size: 19px; }
.btn-cta-projects { font-size: 17px; }
.btn-block { width: 100%; justify-content: center; }

/* ---- Site Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-fast) var(--ease), background var(--duration-fast) var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--border-color);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.site-header__logo img { height: 82px; width: auto; }

.site-nav {
  display: none;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 36px;
}

.site-nav__link {
  font-size: 19px;
  color: var(--text);
  position: relative;
  padding-block: 6px;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-fast) var(--ease);
}

.site-nav__link:hover::after,
.site-nav__link.is-active::after {
  transform: scaleX(1);
}

.site-nav__link.is-active { color: var(--walnut); }

.site-header__cta { display: none; font-size: 16px; }

.header__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  padding: 10px;
}
.header__hamburger span {
  display: block;
  height: 2px;
  background: var(--text);
  transition: transform var(--duration-fast) var(--ease), opacity var(--duration-fast) var(--ease);
}
.header__hamburger.is-open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.header__hamburger.is-open span:nth-child(2) { opacity: 0; }
.header__hamburger.is-open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

@media (max-width: 1023px) {
  .site-header__logo img { height: 66px; }
}

@media (min-width: 1024px) {
  .site-nav { display: block; }
  .site-header__cta { display: inline-flex; }
  .header__hamburger { display: none; }
}

/* ---- Mobile Off-canvas Menu ---- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-mobile-menu);
  background: var(--color-white);
  transform: translateX(100%);
  transition: transform var(--duration-base) var(--ease);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.mobile-menu.is-open { transform: translateX(0); }

.mobile-menu__header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: var(--mobile-padding);
  border-bottom: 1px solid var(--border-color);
}

.mobile-menu__header img {
  height: 66px;
  width: auto;
}

.mobile-menu__list {
  padding: var(--space-md) var(--mobile-padding);
  flex: 1;
}

.mobile-menu__list a {
  display: block;
  padding: 16px 0;
  font-size: 20px;
  font-family: var(--font-serif-tc);
  border-bottom: 1px solid var(--border-color);
}

.mobile-menu__footer {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-color);
  border-top: 1px solid var(--border-color);
}

.mobile-menu__footer a {
  background: var(--background-soft);
  padding: 18px 8px;
  text-align: center;
  font-size: 13px;
}

@media (min-width: 1024px) {
  .mobile-menu, .header__hamburger { display: none; }
}

/* ---- Mobile Bottom CTA Bar ---- */
.mobile-cta-bar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: var(--z-mobile-cta);
  height: 60px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--color-white);
  border-top: 1px solid var(--border-color);
  box-shadow: 0 -4px 16px rgba(51,51,51,0.06);
}

.mobile-cta-bar a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: 12px;
  color: var(--text);
}

.mobile-cta-bar a:nth-child(3) { background: var(--gold); color: var(--color-white); }

body.has-mobile-cta { padding-bottom: 60px; }

@media (min-width: 1024px) {
  .mobile-cta-bar { display: none; }
  body.has-mobile-cta { padding-bottom: 0; }
}

/* ---- Cards ---- */
.card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--duration-base) var(--ease), box-shadow var(--duration-base) var(--ease);
}

.card__media {
  position: relative;
  overflow: hidden;
  background: var(--background-soft-beige);
}

.card__media img {
  width: 100%;
  height: 100%;
  transition: transform 600ms var(--ease);
}

.card:hover .card__media img { transform: scale(1.03); }

.card__body { padding: var(--card-padding); }

.card__tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }

.tag {
  font-size: 12px;
  padding: 4px 12px;
  border: 1px solid var(--border-color-gold);
  border-radius: 999px;
  color: var(--walnut);
}

/* Service Card */
.service-card {
  background: var(--background-soft);
  border-radius: var(--radius-md);
  padding: var(--card-padding);
}

.service-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  margin-bottom: var(--space-sm);
}

/* Feature / Numbered advantage */
.feature {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature__number {
  font-family: var(--font-en);
  font-size: 42px;
  color: var(--gold);
  font-weight: 700;
}

/* ---- Filter bar (Projects) ---- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-btn {
  padding: 10px 22px;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  font-size: 14px;
  color: var(--text);
  transition: all var(--duration-fast) var(--ease);
}

.filter-btn:hover { border-color: var(--gold); }

.filter-btn.is-active {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--color-white);
}

/* ---- FAQ Accordion ---- */
.accordion-item {
  border-bottom: 1px solid var(--border-color);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 4px;
  text-align: left;
  font-size: 17px;
  font-weight: 600;
}

.accordion-trigger .icon-plus {
  flex-shrink: 0;
  position: relative;
  width: 18px;
  height: 18px;
  margin-left: var(--space-md);
}
.accordion-trigger .icon-plus::before,
.accordion-trigger .icon-plus::after {
  content: "";
  position: absolute;
  background: var(--gold);
  transition: transform var(--duration-fast) var(--ease);
}
.accordion-trigger .icon-plus::before { left:0; right:0; top:50%; height:2px; transform: translateY(-50%); }
.accordion-trigger .icon-plus::after { top:0; bottom:0; left:50%; width:2px; transform: translateX(-50%); }

.accordion-item.is-open .icon-plus::after { transform: translateX(-50%) rotate(90deg); opacity: 0; }

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-base) var(--ease);
}

.accordion-panel__inner {
  padding-bottom: 22px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ---- Testimonials Carousel ---- */
.carousel {
  position: relative;
  overflow: hidden;
}

.carousel__track {
  display: flex;
  transition: transform var(--duration-slow) var(--ease);
}

.carousel__slide {
  flex: 0 0 100%;
  padding: 4px;
}

@media (min-width: 900px) {
  .carousel__slide { flex: 0 0 33.333%; }
}

.testimonial {
  background: var(--background-soft);
  border-radius: var(--radius-md);
  padding: var(--card-padding);
  height: 100%;
}

.testimonial__stars { color: var(--gold); letter-spacing: 2px; margin-bottom: 12px; }

.carousel__dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: var(--space-md);
}

.carousel__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border-color);
}
.carousel__dot.is-active { background: var(--gold); }

/* ---- Before / After Slider ---- */
.before-after {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  aspect-ratio: 16 / 9;
  touch-action: none;
  user-select: none;
}

.before-after__img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}

.before-after__after-wrap {
  position: absolute;
  inset: 0;
  width: 50%;
  overflow: hidden;
}

.before-after__after-wrap img { width: var(--ba-width, 200%); max-width: none; height: 100%; }

.before-after__handle {
  position: absolute;
  top: 0; bottom: 0;
  left: 50%;
  width: 3px;
  background: var(--color-white);
  transform: translateX(-50%);
  cursor: ew-resize;
}

.before-after__handle::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 44px; height: 44px;
  background: var(--color-white) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23C7A86E' stroke-width='2'%3E%3Cpath d='M8 7l-5 5 5 5M16 7l5 5-5 5'/%3E%3C/svg%3E") center/20px no-repeat;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: var(--shadow-sm);
}

.before-after__label {
  position: absolute;
  top: 16px;
  padding: 4px 14px;
  font-size: 12px;
  letter-spacing: 0.1em;
  background: rgba(51,51,51,0.6);
  color: var(--color-white);
  border-radius: 999px;
}
.before-after__label--before { left: 16px; }
.before-after__label--after { right: 16px; }

/* ---- Process / Timeline ---- */
.process {
  display: flex;
  justify-content: space-between;
  gap: var(--space-sm);
}

.process__step {
  flex: 1;
  text-align: center;
  position: relative;
}

.process__circle {
  width: 84px; height: 84px;
  margin-inline: auto;
  border-radius: 50%;
  border: 1px solid var(--border-color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  font-size: 26px;
  margin-bottom: var(--space-sm);
  background: var(--background);
  position: relative;
  z-index: 1;
}

.process__connector {
  position: absolute;
  top: 42px;
  left: 50%;
  width: 100%;
  height: 1px;
  border-top: 1px dashed var(--border-color-gold);
  z-index: 0;
}

@media (max-width: 900px) {
  .process { flex-direction: column; }
  .process__step { display: flex; align-items: flex-start; gap: var(--space-sm); text-align: left; }
  .process__connector { display: none; }
}

/* ---- Forms ---- */
.form-field { margin-bottom: var(--space-md); }

.form-field label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
}

.form-field .required { color: var(--gold); }

.form-field input[type="text"],
.form-field input[type="tel"],
.form-field input[type="email"],
.form-field input[type="date"],
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  font-size: 15px;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--gold);
  outline: none;
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
}

.form-error {
  color: #B3452C;
  font-size: 13px;
  margin-top: 6px;
  display: none;
}

.form-field.has-error input,
.form-field.has-error select,
.form-field.has-error textarea {
  border-color: #B3452C;
}
.form-field.has-error .form-error { display: block; }

/* Honeypot — visually hidden, but present in DOM/tab order excluded */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Upload dropzone */
.upload-dropzone {
  border: 1.5px dashed var(--border-color-gold);
  border-radius: var(--radius-md);
  padding: 36px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--duration-fast) var(--ease), background var(--duration-fast) var(--ease);
}

.upload-dropzone.is-dragover {
  background: var(--background-soft);
  border-color: var(--gold);
}

.upload-dropzone__hint { font-size: 13px; color: var(--text-muted); margin-top: 6px; }

.upload-file-list { margin-top: 12px; display: flex; flex-direction: column; gap: 8px; }

.upload-file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: var(--background-soft);
  border-radius: var(--radius-sm);
  font-size: 13px;
}

/* ---- Info Cards (Contact) ---- */
.info-card {
  background: var(--background-soft);
  border-radius: var(--radius-md);
  padding: 26px;
  text-align: center;
}

.info-card__icon { display: flex; justify-content: center; align-items: center; color: var(--gold); margin-bottom: 16px; }

/* ---- Breadcrumb ---- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb a:hover { color: var(--walnut); }
.breadcrumb .sep { opacity: 0.5; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: var(--space-sm);
  font-size: 14px;
  color: var(--walnut);
}
.back-link:hover { color: var(--gold); }

/* ---- CTA Banner ---- */
.cta-banner {
  background: var(--background-soft-beige);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* ---- Pagination ---- */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.pagination a, .pagination span {
  min-width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 14px;
  padding-inline: 10px;
}
.pagination a { border: 1px solid var(--border-color); }
.pagination a:hover { background: var(--background-soft); border-color: var(--gold); }
.pagination .is-current { background: var(--gold); color: var(--color-white); font-weight: 700; }
.pagination__prev, .pagination__next { width: 40px; min-width: 40px; padding-inline: 0; color: var(--walnut); }
.pagination span.is-disabled { color: var(--text-muted); opacity: 0.4; border: 1px solid var(--border-color); cursor: not-allowed; }
.pagination__ellipsis { border: none; color: var(--text-muted); }

/* ---- Site Footer ---- */
.site-footer {
  background: var(--background-soft);
  padding-block: var(--space-xl) var(--space-md);
  color: var(--text);
}

.site-footer__top {
  display: grid;
  grid-template-columns: 1.3fr 0.85fr 0.9fr 1.55fr;
  column-gap: var(--space-sm);
  row-gap: var(--space-md);
  padding-bottom: var(--space-lg);
}

.site-footer__top > div:nth-child(2) { margin-left: 8px; }

.site-footer__logo img { height: 81px; width: auto; margin-bottom: var(--space-sm); }

.site-footer__company {
  width: 331px;
  max-width: 100%;
  font-size: 24px;
  color: var(--text);
}

.site-footer h4 {
  font-size: 18px;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
  color: var(--text-muted);
}

.site-footer ul li { margin-bottom: 10px; font-size: 15px; }
.site-footer a:hover { color: var(--walnut); }

.site-footer__bottom {
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-md);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: 15px;
  color: var(--text-muted);
}

@media (max-width: 900px) {
  .site-footer__top { grid-template-columns: repeat(2, 1fr); }
  .site-footer__brand { grid-column: 1 / -1; }
  .site-footer__top > div:nth-child(4) { grid-column: 1 / -1; }
  .site-footer__top > div:nth-child(2) { margin-left: 0; }
  .site-footer__logo img { width: 150px; height: auto; }
  .site-footer__company { font-size: 17px; }
}

/* ---- Modal ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(51,51,51,0.5);
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--mobile-padding);
}
.modal-overlay.is-open { display: flex; }

.modal {
  background: var(--color-white);
  border-radius: var(--radius-md);
  max-width: 480px;
  width: 100%;
  padding: var(--space-lg);
}

/* ---- Fade-up reveal ---- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease), transform var(--duration-slow) var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}