/* ============================================
   ALBA DIZAYN — Components
   Premium / Minimal / Architectural
   ============================================ */

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  border-radius: 0;
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border: 1px solid var(--color-primary);
}

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-gray-700);
  border: 1px solid var(--color-gray-300);
}

.btn--secondary:hover {
  background-color: var(--color-gray-100);
  color: var(--color-gray-900);
  border-color: var(--color-gray-500);
}

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

.btn--ghost:hover {
  background-color: var(--color-white);
  color: var(--color-gray-900);
  border-color: var(--color-white);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: 11px;
}

.btn--lg {
  padding: var(--space-5) var(--space-10);
  font-size: var(--text-base);
}

.btn--full {
  width: 100%;
}

/* ── Section Headers ── */
.section-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--tracking-ultra);
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-6);
}

.section-label--center {
  text-align: center;
}

.section-header {
  margin-bottom: var(--space-12);
}

.section-header--center {
  text-align: center;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  line-height: 1.2;
}

/* ── WhatsApp FAB ── */
.whatsapp-fab,
.whatsapp-btn {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  width: 56px;
  height: 56px;
  background-color: #25D366;
  color: var(--color-white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-sticky);
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.3);
  transition: transform var(--duration-normal) var(--ease-out);
}

.whatsapp-fab svg,
.whatsapp-btn svg {
  width: 28px;
  height: 28px;
}

.whatsapp-fab:hover,
.whatsapp-btn:hover {
  transform: scale(1.1);
}

/* ── Lightbox ── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.lightbox__image {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: 4px;
}

.lightbox__close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.2s;
}

.lightbox__close:hover {
  background: rgba(255, 255, 255, 0.25);
}

.lightbox__close svg {
  width: 24px;
  height: 24px;
  color: var(--color-white);
}

.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.2s;
}

.lightbox__nav:hover {
  background: rgba(255, 255, 255, 0.25);
}

.lightbox__nav svg {
  width: 24px;
  height: 24px;
  color: var(--color-white);
}

.lightbox__nav--prev {
  left: 24px;
}

.lightbox__nav--next {
  right: 24px;
}

.lightbox__counter {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--text-sm);
}

/* ── Loader ── */
.loader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s, visibility 0.5s;
}

.loader.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.loader__content {
  text-align: center;
}

.loader__logo {
  width: 120px;
  margin-bottom: 24px;
}

.loader__bar {
  width: 120px;
  height: 2px;
  background: var(--color-gray-200);
  border-radius: 2px;
  overflow: hidden;
}

.loader__bar-fill {
  height: 100%;
  background: var(--color-primary);
  animation: loaderFill 1.2s ease-in-out forwards;
}

@keyframes loaderFill {
  0% { width: 0; }
  100% { width: 100%; }
}