/* ==========================================================================
   PT SBM — Components: buttons, cards, header/nav, footer, forms, WA button
   ========================================================================== */

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 14px 28px;
  font-size: var(--fs-body);
  font-weight: 600;
  border-radius: var(--radius-btn);
  border: 2px solid transparent;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
  white-space: nowrap;
}

.btn:active { transform: translateY(1px); }

.btn svg { width: 18px; height: 18px; flex: none; }

.btn-primary {
  background: var(--color-accent-500);
  color: var(--color-navy-950);
  border-color: var(--color-accent-500);
}
.btn-primary:hover { background: var(--color-accent-600); border-color: var(--color-accent-600); }

.btn-secondary {
  background: var(--color-navy-950);
  color: var(--color-white);
  border-color: var(--color-navy-950);
}
.btn-secondary:hover { background: var(--color-navy-900); }

.btn-outline {
  background: transparent;
  color: var(--color-navy-950);
  border-color: var(--color-navy-950);
}
.btn-outline:hover { background: var(--color-navy-950); color: var(--color-white); }

.btn-outline-light {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.6);
}
.btn-outline-light:hover { background: var(--color-white); color: var(--color-navy-950); border-color: var(--color-white); }

.btn-block { width: 100%; }

/* ---- Cards ---- */
.sbm-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border-top: 3px solid var(--color-accent-500);
  transition: box-shadow var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
  overflow: hidden;
}

.sbm-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.sbm-card__media {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--color-gray-50);
}

.sbm-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease-out);
}

.sbm-card:hover .sbm-card__media img { transform: scale(1.05); }

.sbm-card__media--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-navy-950);
  background-image: linear-gradient(135deg, var(--color-navy-900) 25%, transparent 25%), linear-gradient(225deg, var(--color-navy-900) 25%, transparent 25%);
  background-size: 24px 24px;
}

.sbm-card__media--placeholder svg {
  width: 56px;
  height: 56px;
  stroke: var(--color-accent-500);
  opacity: 0.85;
}

.sbm-card__body {
  padding: var(--space-5);
}

.sbm-card__body h3 { margin-bottom: var(--space-2); }

.sbm-card__list {
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.sbm-card__list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

.sbm-card__list svg {
  width: 16px;
  height: 16px;
  flex: none;
  margin-top: 3px;
  color: var(--color-accent-800);
}

/* ---- Icon tile ---- */
.sbm-icon-tile {
  width: 56px;
  height: 56px;
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-navy-950);
  border-radius: var(--radius-md);
}

.sbm-icon-tile svg { width: 26px; height: 26px; color: var(--color-accent-500); }

.sbm-icon-tile--outline {
  background: transparent;
  border: 1.5px solid var(--color-border);
}
.sbm-icon-tile--outline svg { color: var(--color-navy-950); }

/* ---- Header / Nav ---- */
.sbm-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.sbm-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: var(--space-4);
}

.sbm-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: none;
}

.sbm-brand img { height: 48px; width: auto; }

.sbm-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.sbm-brand__name {
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--color-navy-950);
}

.sbm-brand__tagline {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.sbm-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.sbm-nav__list {
  display: flex;
  gap: var(--space-4);
}

.sbm-nav__list a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  padding-block: var(--space-2);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color var(--dur-fast), border-color var(--dur-fast);
}

.sbm-nav__list a:hover,
.sbm-nav__list a:focus-visible { color: var(--color-accent-800); }

.sbm-nav__list a[aria-current="page"] {
  color: var(--color-accent-800);
  border-bottom-color: var(--color-accent-800);
}

/* ---- About media/checklist ---- */
.sbm-about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-10);
  align-items: center;
}

.sbm-about__media {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.sbm-about__media img {
  border-radius: var(--radius-lg);
  aspect-ratio: 4 / 5;
  object-fit: cover;
  width: 100%;
}

.sbm-about__media div:last-child { margin-top: var(--space-8); }

.sbm-about__checklist {
  display: grid;
  gap: var(--space-3);
  margin-block: var(--space-6);
}

.sbm-about__checklist li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 500;
}

.sbm-about__checklist svg { width: 20px; height: 20px; color: var(--color-accent-800); flex: none; }

@media (max-width: 900px) {
  .sbm-about__grid { grid-template-columns: 1fr; }
}

/* ---- Machinery preview footer ---- */
.sbm-machinery__footer {
  text-align: center;
  margin-top: var(--space-8);
}

/* ---- Project card ---- */
.sbm-project-card {
  background: var(--color-navy-900);
  border: 1px solid var(--color-border-dark);
  border-top: 3px solid var(--color-accent-500);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.sbm-project-card__media { aspect-ratio: 4 / 3; overflow: hidden; }
.sbm-project-card__media img { width: 100%; height: 100%; object-fit: cover; }

.sbm-project-card__body { padding: var(--space-5); }
.sbm-project-card__body h3 { font-size: 1.05rem; color: var(--color-white); margin-bottom: var(--space-3); }

/* ---- Why-choose icon rows ---- */
.sbm-why__list { display: grid; gap: var(--space-5); }
.sbm-why__row { display: flex; gap: var(--space-4); }
.sbm-why__row h3 { font-size: 1rem; margin-bottom: var(--space-1); }
.sbm-why__row p { font-size: var(--fs-small); }

/* ---- Map embed frame ---- */
.sbm-map {
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
  line-height: 0;
}

.sbm-map iframe { display: block; }

/* ---- Empty state (e.g. testimonials pending) ---- */
.sbm-empty-state {
  max-width: 560px;
  margin-inline: auto;
  text-align: center;
  padding: var(--space-10) var(--space-6);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
}

.sbm-empty-state svg { width: 36px; height: 36px; color: var(--color-gray-400); margin-bottom: var(--space-4); }
.sbm-empty-state p { color: var(--color-text-muted); }

.sbm-header__cta {
  padding-inline: var(--space-5);
  white-space: nowrap;
}

.sbm-header__utility {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex: none;
}

.sbm-header__phone {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-navy-950);
}

.sbm-header__phone svg { width: 18px; height: 18px; color: var(--color-accent-800); }

.sbm-nav-toggle {
  display: none;
  position: relative;
  z-index: 110;
  background: none;
  border: none;
  padding: var(--space-2);
  color: var(--color-navy-950);
}

.sbm-nav-toggle svg { width: 26px; height: 26px; }

.sbm-nav-toggle .icon-close { display: none; }
.sbm-nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.sbm-nav-toggle[aria-expanded="true"] .icon-close { display: block; }

@media (max-width: 1024px) {
  .sbm-header__phone { display: none; }
}

@media (max-width: 1300px) {
  .sbm-nav {
    position: fixed;
    z-index: 95;
    inset: var(--header-height) 0 0 auto;
    width: min(320px, 85vw);
    background: var(--color-navy-950);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-6) var(--space-5);
    gap: var(--space-6);
    transform: translateX(100%);
    transition: transform var(--dur-base) var(--ease-out);
    overflow-y: auto;
  }
  .sbm-nav.is-open { transform: translateX(0); box-shadow: var(--shadow-lg); }
  .sbm-nav__list { flex-direction: column; gap: var(--space-1); }
  .sbm-nav__list a { color: var(--color-white); display: block; padding: var(--space-3) 0; }
  .sbm-nav__list a:hover { color: var(--color-accent-500); }
  .sbm-nav-toggle { display: inline-flex; }
  .sbm-header__cta { width: 100%; }
}

.sbm-nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(11, 18, 32, 0.5);
  z-index: 90;
}
.sbm-nav-backdrop.is-open { display: block; }

/* ---- Footer ---- */
.sbm-footer {
  background: var(--color-navy-950);
  color: var(--color-text-on-dark-muted);
  padding-block: var(--space-12) var(--space-8);
}

.sbm-footer h3 {
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: var(--space-4);
}

.sbm-footer__brand { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-4); }
.sbm-footer__brand img { height: 40px; }
.sbm-footer__brand .sbm-brand__name { color: var(--color-white); }
.sbm-footer__brand .sbm-brand__tagline { color: var(--color-text-on-dark-muted); }

.sbm-footer a { color: var(--color-text-on-dark-muted); transition: color var(--dur-fast); }
.sbm-footer a:hover { color: var(--color-accent-500); }

.sbm-footer__list { display: flex; flex-direction: column; gap: var(--space-2); }

.sbm-footer__contact-item {
  display: flex;
  gap: var(--space-2);
  align-items: flex-start;
  margin-bottom: var(--space-2);
  font-size: var(--fs-small);
}
.sbm-footer__contact-item svg { width: 16px; height: 16px; flex: none; margin-top: 3px; color: var(--color-accent-500); }

.sbm-footer__bottom {
  border-top: 1px solid var(--color-border-dark);
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: space-between;
  font-size: var(--fs-small);
}

/* ---- Back to top / WhatsApp float ---- */
.sbm-float-stack {
  position: fixed;
  right: var(--space-5);
  bottom: var(--space-5);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  z-index: 80;
}

.sbm-fab {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transition: transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}
.sbm-fab:hover { transform: translateY(-2px); }
.sbm-fab svg { width: 26px; height: 26px; }

.sbm-fab--whatsapp { background: #25D366; color: var(--color-white); }
.sbm-fab--top {
  background: var(--color-navy-950);
  color: var(--color-white);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
}
.sbm-fab--top.is-visible { opacity: 1; pointer-events: auto; transform: none; }
.sbm-fab--top svg { width: 20px; height: 20px; }

@media (max-width: 480px) {
  .sbm-float-stack { right: var(--space-3); bottom: var(--space-3); }
  .sbm-fab { width: 48px; height: 48px; }
}