/* ============================================================
   PORTFOLIO PAGE CORE & GRID STYLES
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-main: #ffffff;
  --bg-pill: #fcfaf8;
  --border-light: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 0, 0, 0.2);
  --text-dark: #121214;
  --text-muted: #64748b;
  --primary-red: #e62b4a;
  --primary-dark: #1f2226;
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
  --container-max: 1440px;
  --soft-ease: cubic-bezier(0.25, 1, 0.5, 1);
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-main);
  color: var(--text-dark);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: 92%;
  max-width: var(--container-max);
  margin: 0 auto;
}

/* ================= HERO SECTION ================= */
.hero-section {
  padding: 70px 0 35px 0;
}

.hero-wrap {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 25px;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 40px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1.5px;
  color: var(--primary-dark);
}

.hero-title span.dot {
  color: var(--primary-red);
}

/* Contact Button with Fixed White Hover Text */
.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: var(--primary-dark) !important;
  color: #ffffff !important;
  border-radius: 6px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.88rem;
  letter-spacing: 0.3px;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease !important;
}

.hero-cta:hover,
.hero-cta:active,
.hero-cta:focus {
  background: var(--primary-red) !important;
  color: #ffffff !important;
  box-shadow: 0 10px 24px rgba(230, 43, 74, 0.35) !important;
  transform: translateY(-2px);
}

/* ================= FILTER TABS ================= */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 35px 0 45px 0;
}

.filter-btn {
  padding: 8px 22px;
  border-radius: 30px;
  border: 1px solid var(--border-light);
  background: var(--bg-pill);
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.3s var(--soft-ease);
}

.filter-btn:hover {
  background: #f4ece4;
  color: var(--text-dark);
}

.filter-btn.active {
  background: var(--primary-dark);
  color: #fff;
  border-color: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

/* ================= 4-COLUMN SQUARE GRID ================= */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.portfolio-card {
  position: relative;
  background: #1a1a1d;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-light);
  cursor: pointer;
  aspect-ratio: 1 / 1;
  width: 100%;
  height: auto;
  transform: translate3d(0, 0, 0);
  -webkit-transform: translate3d(0, 0, 0);
  transition: transform 0.4s var(--soft-ease), box-shadow 0.4s var(--soft-ease);
  will-change: transform;
}

.portfolio-card.is-hidden {
  display: none !important;
}

.portfolio-card:hover,
.portfolio-card.touch-active {
  transform: translateY(-6px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.14);
}

.card-media {
  display: block;
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
  border-radius: inherit;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  transition: transform 0.6s var(--soft-ease);
}

.portfolio-card:hover .card-media img,
.portfolio-card.touch-active .card-media img {
  transform: scale(1.05);
}

/* ================= FROSTED BLUR & TEXT OVERLAY (HOVER & TOUCH ONLY) ================= */
.card-hover-box {
  position: absolute;
  inset: 0;
  z-index: 20;
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0.1) 0%,
    rgba(0, 0, 0, 0.55) 45%,
    rgba(13, 13, 14, 0.94) 100%
  );
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;
  transform: translateY(12px);
  transition: opacity 0.35s var(--soft-ease), transform 0.35s var(--soft-ease), visibility 0.35s;
}

/* Revealed ONLY on desktop hover or mobile touch tap */
.portfolio-card:hover .card-hover-box,
.portfolio-card.touch-active .card-hover-box {
  opacity: 1 !important;
  visibility: visible !important;
  pointer-events: auto !important;
  transform: translateY(0) !important;
}

.card-category {
  font-family: var(--font-body);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 700;
  color: var(--primary-red);
  margin-bottom: 6px;
  transform: translateY(6px);
  transition: transform 0.35s var(--soft-ease);
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.35;
  color: #ffffff;
  transform: translateY(6px);
  transition: transform 0.35s var(--soft-ease) 0.05s;
}

.portfolio-card:hover .card-category,
.portfolio-card:hover .card-title,
.portfolio-card.touch-active .card-category,
.portfolio-card.touch-active .card-title {
  transform: translateY(0) !important;
}

/* ================= LOAD MORE ================= */
.load-more-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  margin: 55px auto 90px auto;
  text-align: center;
}

.load-more-btn {
  padding: 14px 40px;
  border-radius: 5px;
  border: 1px solid var(--border-light);
  background: var(--bg-pill);
  color: var(--text-dark);
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: all 0.35s var(--soft-ease);
}

.load-more-btn:hover {
  background: var(--primary-dark);
  color: #fff;
  border-color: var(--primary-dark);
}

.spinner {
  display: none;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(0, 0, 0, 0.2);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.load-more-btn.is-loading .spinner {
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ================= RESPONSIVE ================= */
@media (max-width: 1200px) {
  .portfolio-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 992px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }
}

@media (max-width: 600px) {
  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .hero-wrap {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-cta {
    width: 100%;
    justify-content: center;
  }

  .card-hover-box {
    padding: 20px;
  }

  .card-title {
    font-size: 1.1rem;
  }
}