/* ================================
   Portfolio Stack Carousel
================================== */

.portfolio-home-section {
  margin-top: 50px;
  margin-bottom: 10px;
  text-align: center;
}

.portfolio-carousel {
  width: min(1200px, 92vw);
  margin: 0 auto;
  padding: 0px 0 10px;
}

/* keep the stack centered and safe on phones */
@media (max-width: 768px) {
  .portfolio-carousel {
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
  }
}

.portfolio-carousel__header {
  text-align: center;
  margin-bottom: 26px;
}

.portfolio-carousel__title {
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.05;
  margin: 0;
  font-weight: 800;
}

.portfolio-carousel__subtitle {
  margin: 8px 0 0;
  font-size: clamp(16px, 2vw, 22px);
  opacity: 0.9;
  font-weight: 600;
}

/* stage now ONLY wraps the stack */
.portfolio-carousel__stage {
  display: block;
}

/* ================================
   Stack
================================== */

.portfolio-stack {
  position: relative;
  width: min(980px, 82vw);
  aspect-ratio: 16 / 9;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .portfolio-stack {
    width: 100%;
  }
}

.portfolio-stack__card {
  position: absolute;
  inset: 0;
  overflow: hidden;
  border-radius: 0px;
  background: #000;

  /* default shadow */
  box-shadow: 0 18px 40px rgba(0,0,0,0.20);

  /* smooth motion for ALL cards */
  transition:
    transform 900ms cubic-bezier(0.16, 1, 0.3, 1),
    filter 900ms ease,
    opacity 900ms ease,
    box-shadow 600ms ease;
  will-change: transform;

  opacity: 1; /* IMPORTANT: no old "opacity:0" */
}

/* slot positions (front/middle/back) */
.portfolio-stack__card[data-slot="0"] {
  transform: translate(0px, 0px) scale(1);
  z-index: 3;
}

.portfolio-stack__card[data-slot="1"] {
  transform: translate(-44px, -18px) scale(0.98);
  z-index: 2;
  filter: saturate(0.96) brightness(0.98);
}

.portfolio-stack__card[data-slot="2"] {
  transform: translate(-88px, -36px) scale(0.96);
  z-index: 1;
  filter: saturate(0.92) brightness(0.97);
}

@media (max-width: 768px) {
  .portfolio-stack {
    width: 100%;
    padding-left: 22px;   /* gutter */
    padding-right: 22px;  /* gutter */
    box-sizing: border-box;
  }
}


/* image */
.portfolio-stack__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* analytics site: ALL-AROUND white glow (not offset) */
.portfolio-stack__card.shadow-white {
  box-shadow:
    0 0 26px rgba(255,255,255,0.30),
    0 0 55px rgba(255,255,255,0.18);
}

/* ================================
   Bottom Controls
================================== */

.portfolio-carousel__controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 36px;
  margin-top: 24px;
}

.portfolio-carousel__nav {
  width: 54px;
  height: 54px;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: 999px;

  display: grid;
  place-items: center;

  font-size: 34px;
  line-height: 1;
  color: #111;

  transition: transform 0.15s ease, background-color 0.15s ease;
}

.portfolio-carousel__nav:hover {
  transform: translateY(-1px);
  background-color: rgba(0,0,0,0.04);
}

.portfolio-carousel__nav:active {
  transform: translateY(0px);
}

.portfolio-carousel__nav:focus-visible {
  outline: 3px solid rgba(0,0,0,0.6);
  outline-offset: 3px;
}

@media (max-width: 768px) {
  .portfolio-carousel__controls {
    gap: 24px;
  }

  .portfolio-carousel__nav {
    width: 48px;
    height: 48px;
    font-size: 32px;
  }
}

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  .portfolio-stack__card,
  .portfolio-carousel__nav {
    transition: none !important;
  }
}

@media (max-width: 768px) {
  .portfolio-stack {
    width: 85%;
    padding-left: 18px;
    padding-right: 18px;
    box-sizing: border-box;
  }

  .portfolio-stack__card[data-slot="1"] {
    transform: translate(-14px, -10px) scale(0.985);
  }

  .portfolio-stack__card[data-slot="2"] {
    transform: translate(-28px, -20px) scale(0.97);
  }
}

/*
########################################
#        Portfolio Buttons + Box       #
######################################## 
*/

.portfolio-view-button {
  display: flex;
  justify-content: center;
  margin: 0 auto 100px;
  color: black;
  cursor: pointer;
  outline: none;
  border: none;
  background: transparent;
  font-size: 28px;
  font-weight: bold;
}

.portfolio-view-button:hover {
  text-decoration: none;
}