/* Skill Outcomes: scroll-triggered stacking card animation.
   Cards pin and stack as you scroll — 9:16 vertical format for vertical videos.
   Original content, colours, typography preserved. */

/* ── Stack container ── */
.skills-stack {
  position: relative;
  width: 100%;
  max-width: 440px;
  margin: 0 auto var(--space-2xl);
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ── Card wrapper — provides scroll height per card ── */
.skill-card-wrapper {
  position: sticky;
  top: 90px; /* below sticky header */
  margin-bottom: 32px;
  width: 100%;
  display: flex;
  justify-content: center;
}

.skill-card-wrapper:last-child {
  margin-bottom: 0;
}

/* ── The card itself (9:16 vertical aspect ratio) ── */
.skills-stack .skill-card {
  position: relative;
  width: 100%;
  max-width: 440px;
  aspect-ratio: 9 / 16;
  max-height: calc(100vh - 220px);
  border-radius: 24px;
  overflow: hidden;
  background: var(--bg-card, #191729);
  border: 1px solid var(--border-color, #29263A);
  box-shadow: 0 16px 40px -12px rgba(0, 0, 0, 0.75), 0 0 0 1px rgba(146, 85, 255, 0.1);
  display: flex;
  flex-direction: column;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.35s ease;
}

.skills-stack .skill-card:hover {
  border-color: var(--gold-primary, #F4B942);
  box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.85), 0 0 30px rgba(244, 185, 66, 0.3);
  cursor: pointer;
}

/* ── Background image / video slot ── */
.skills-stack .skill-card-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background: #000;
}

.skills-stack .skill-card-bg img,
.skills-stack .skill-card-bg video,
.skills-stack .skill-video-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.skills-stack .skill-card:hover .skill-card-bg img,
.skills-stack .skill-card:hover .skill-card-bg video,
.skills-stack .skill-card:hover .skill-video-bg {
  transform: scale(1.04);
}

/* ── Dark overlay tailored for 9:16 vertical videos ── */
.skills-stack .skill-card-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    180deg,
    rgba(11, 10, 20, 0.45) 0%,
    rgba(11, 10, 20, 0.1) 35%,
    rgba(11, 10, 20, 0.5) 65%,
    rgba(11, 10, 20, 0.95) 100%
  );
  pointer-events: none;
}

/* ── Content layer (Grid layout: Top badge / Bottom info & arrow) ── */
.skills-stack .skill-card-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto 1fr auto;
  padding: 26px 24px;
  height: 100%;
  box-sizing: border-box;
  align-items: end;
  gap: 12px;
  pointer-events: none;
}

/* ── Top row: Number badge ── */
.skill-card-top {
  grid-column: 1 / -1;
  grid-row: 1;
  align-self: start;
}

.skill-card-num {
  font-family: var(--font-display, 'Syne', sans-serif);
  font-size: clamp(34px, 5vw, 48px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  display: inline-block;
  user-select: none;
  background: linear-gradient(180deg, #FFFFFF 0%, rgba(255, 255, 255, 0.45) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.7));
}

/* ── Bottom row: Title + tag block ── */
.skills-stack .skill-card-info {
  grid-column: 1;
  grid-row: 3;
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
}

.skills-stack .skill-card-title {
  font-family: var(--font-heading, 'Plus Jakarta Sans', sans-serif);
  font-size: clamp(19px, 3.2vw, 24px);
  font-weight: 700;
  color: var(--text-primary, #FFFFFF);
  line-height: 1.25;
  margin: 0;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
}

.skills-stack .skill-card-tag {
  font-family: var(--font-accent, 'DM Sans', sans-serif);
  font-size: clamp(12px, 2vw, 13.5px);
  color: var(--gold-highlight, #FFD580);
  font-weight: 500;
  letter-spacing: 0.2px;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.85);
}

/* ── Bottom row: Arrow circle ── */
.skill-card-arrow {
  grid-column: 2;
  grid-row: 3;
  align-self: end;
  flex-shrink: 0;
}

.skill-card-arrow-circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(244, 185, 66, 0.2);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
}

.skill-card-arrow-circle svg {
  width: 24px;
  height: 24px;
}

.skills-stack .skill-card:hover .skill-card-arrow-circle {
  background: var(--gold-primary, #F4B942);
  border-color: var(--gold-primary, #F4B942);
  color: var(--gold-dark-text, #17120A);
  transform: scale(1.1) translateX(3px);
  box-shadow: 0 0 24px rgba(244, 185, 66, 0.6);
}

/* ── Placeholder cards (AE track) ── */
.skills-stack .skill-card-placeholder .placeholder-media {
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at 50% 40%, rgba(146, 85, 255, 0.28) 0%, transparent 70%),
    linear-gradient(135deg, #191729 0%, #0B0A14 100%);
  position: relative;
}

.skills-stack .skill-card-placeholder .placeholder-media::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(0deg, transparent 0 28px, rgba(146, 85, 255, 0.04) 29px, transparent 30px),
    repeating-linear-gradient(90deg, transparent 0 28px, rgba(146, 85, 255, 0.04) 29px, transparent 30px);
  pointer-events: none;
}

.skills-stack .placeholder-graphic {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  z-index: 2;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.skills-stack .skill-card:hover .placeholder-graphic {
  transform: scale(1.08);
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  .skills-stack .skill-card,
  .skills-stack .skill-card-bg img,
  .skills-stack .skill-card-bg video,
  .skill-card-arrow-circle,
  .skills-stack .placeholder-graphic {
    transition-duration: 1ms !important;
  }
}

/* ── Mobile adjustments ── */
@media (max-width: 560px) {
  .skills-stack {
    max-width: 340px;
  }

  .skill-card-wrapper {
    top: 75px;
    margin-bottom: 20px;
  }

  .skills-stack .skill-card {
    max-height: 60vh;
    border-radius: 20px;
  }

  .skills-stack .skill-card-content {
    padding: 20px 18px;
  }

  .skill-card-num {
    font-size: 32px;
  }

  .skill-card-arrow-circle {
    width: 42px;
    height: 42px;
  }

  .skill-card-arrow-circle svg {
    width: 20px;
    height: 20px;
  }
}

@media (max-width: 360px) {
  .skills-stack {
    max-width: 290px;
  }
}