/* =======================
   PORTFOLIO SECTION BASICS
======================= */

#portfolio {
  padding: 6rem 2rem;
  background: #000;
  text-align: center;
}

.portfolio-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  margin-bottom: 6rem; /* Extra margin to separate from following sections */
}

#portfolio h2 {
  font-size: 3rem;
  margin-bottom: 3rem;
  font-family: "Montserrat", sans-serif;
  text-transform: uppercase;
  color: #fff;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  justify-content: center;
}

/* =======================
   CARD WRAPPER & HOVER
======================= */
.portfolio-card {
  position: relative;
  background: transparent;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  perspective: 1000px; /* for 3D flip */
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  aspect-ratio: 1; /* keep card square */
}

/* Hover: shift upward and add a bigger shadow on desktop */
.portfolio-card:hover {
  /* transform: translateY(-10px); */
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.8);
}

/* Container for front/back sides */
.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.8s ease;
  transform-style: preserve-3d;
  background: #111; /* ensures a consistent background during flip */
  border-radius: inherit;
}

/* Flip class toggled by script.js on click */
.portfolio-card.flipped .card-inner {
  transform: rotateY(180deg);
}

/* =======================
   CARD FRONT
======================= */
.card-front,
.card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden; /* hide backside when facing front */
  border-radius: inherit;
  top: 0;
  left: 0;
}

/* The front side: just the image */
.card-front img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
  transition: transform 0.3s ease;
}

/* =======================
   CARD BACK
======================= */
.card-back {
  transform: rotateY(180deg);
  overflow: hidden;
}

/* 
   The background image on the card back:
   It's the same or a different image, with a dark overlay.
*/
.card-back-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

/* Dark overlay above the background image */
.card-back-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  z-index: 2;
}

/* The actual content on the back side (text, button) */
.card-back-content {
  position: relative;
  z-index: 3; /* above overlay */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: 1rem;
  text-align: center;
  color: #fff;
  margin-top: 2rem;
}

.card-back-content h3 {
  font-family: "Montserrat", sans-serif;
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.card-back-content p {
  font-family: "Inter", sans-serif;
  font-size: 1rem;
  color: #ccc;
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

/* =======================
   LEARN MORE BUTTON
======================= */
.learn-more-button {
  display: inline-block;
  padding: 0.7rem 1.5rem;
  background: #4296d2;
  color: #fff;
  text-decoration: none;
  border-radius: 4px;
  transition: background 0.3s ease;
  margin-top: 1rem;
}

.learn-more-button:hover {
  background: #2f6d99;
  color: #fff;
}

/* =======================
   RESPONSIVE ADJUSTMENTS
======================= */
@media (max-width: 768px) {
  /* Single column grid on smaller screens */
  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
    justify-items: center;
  }

  #portfolio h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
  }

  .portfolio-card {
    min-height: 280px;
    margin: 0 auto;
  }

  /* Remove the hover scale & shadow on mobile */
  .portfolio-card:hover {
    transform: none;
    box-shadow: none;
  }
  .portfolio-card:hover .card-front img {
    transform: none;
  }

  /* Adjust text sizes on the card back */
  .card-back-content h3 {
    font-size: 1.4rem;
  }

  .card-back-content p {
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
  }

  .learn-more-button {
    padding: 0.5rem 1rem;
    margin-bottom: 3rem;
  }
}