/* ═══════════════════════════════════════════════
   PORTFOLIO & CASE STUDIES STYLES
   ═══════════════════════════════════════════════ */

:root {
  --muted: rgba(255, 255, 255, 0.55);
  --card-bg: rgba(255, 255, 255, 0.02);
  --border: rgba(255, 255, 255, 0.08);
  --fg: #ffffff;
  --accent-l: #4ade80;
  --accent-d: #16a34a;
  --cyan: #00897b;
  --glow: rgba(74, 222, 128, 0.15);
}

.portfolio-page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 8rem 2rem 4rem;
}

/* Hero Section */
.portfolio-hero {
  text-align: center;
  margin-bottom: 4rem;
}

.portfolio-hero__label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-l);
  margin-bottom: 1rem;
}

.portfolio-hero__title {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.portfolio-hero__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--accent-d), var(--accent-l));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.portfolio-hero__body {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--muted);
  max-width: 700px;
  margin: 0 auto;
}

.portfolio-divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-d), var(--accent-l));
  border-radius: 2px;
  margin: 2.5rem auto;
}

/* Category Filter Controls */
.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 3.5rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 0.6rem 1.4rem;
  border-radius: 40px;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.filter-btn:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.06);
}

.filter-btn.is-active {
  background: rgba(74, 222, 128, 0.1);
  border-color: var(--accent-l);
  color: #fff;
  box-shadow: 0 0 16px rgba(74, 222, 128, 0.2);
}

/* Project Cards Grid */
.portfolio-grid {
  display: flex;
  flex-direction: column;
  gap: 4rem;
}

.portfolio-card {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 3.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 2.5rem;
  transition: transform 0.4s var(--ease), border-color 0.4s ease, box-shadow 0.4s ease;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  align-items: center;
}

.portfolio-card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 40px rgba(74, 222, 128, 0.05);
}

/* Landscape floating visual wrap */
.portfolio-card__visual-wrap {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: radial-gradient(circle at center, #11131c 0%, #07070a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1.25 / 1;
  width: 100%;
}

.portfolio-card__image {
  width: 88%;
  height: 88%;
  object-fit: contain;
  border-radius: 12px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: transform 0.6s var(--ease), border-color 0.4s ease, box-shadow 0.4s ease;
  display: block;
}

.portfolio-card:hover .portfolio-card__image {
  transform: translateY(-4px) scale(1.01);
  border-color: rgba(74, 222, 128, 0.3);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.9), 0 0 30px rgba(74, 222, 128, 0.12);
}

/* Play/Simulation Hover Overlay */
.portfolio-card__play-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 15, 0.4);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
  opacity: 0;
  transition: opacity 0.3s ease, background 0.3s ease;
  cursor: pointer;
  z-index: 4;
}

.portfolio-card__visual-wrap:hover .portfolio-card__play-overlay {
  opacity: 1;
  background: rgba(10, 10, 15, 0.65);
}

.play-btn-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-l);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0f0f15;
  box-shadow: 0 0 25px rgba(74, 222, 128, 0.4);
  transform: scale(0.9);
  transition: transform 0.3s var(--ease), background 0.3s ease, box-shadow 0.3s ease, color 0.3s ease;
}

.portfolio-card__visual-wrap:hover .play-btn-circle {
  transform: scale(1);
}

.portfolio-card__play-overlay:hover .play-btn-circle {
  background: #fff;
  color: #0f0f15;
  box-shadow: 0 0 35px rgba(255, 255, 255, 0.6);
  transform: scale(1.08);
}

.play-btn-text {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #fff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
  opacity: 0.85;
  transition: opacity 0.3s ease, color 0.3s ease;
}

.portfolio-card__play-overlay:hover .play-btn-text {
  opacity: 1;
  color: var(--accent-l);
}

/* Interactive Simulation Overlay (Running state) */
.portfolio-card__sim-overlay {
  position: absolute;
  inset: 0;
  background: rgba(5, 5, 8, 0.94);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
  z-index: 10;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.portfolio-card__sim-overlay.is-active {
  opacity: 1;
  pointer-events: auto;
}

/* Simulator terminal box */
.sim-box {
  width: 100%;
  max-width: 380px;
  background: #090a0f;
  border: 1.5px solid rgba(74, 222, 128, 0.4);
  border-radius: 14px;
  padding: 1.5rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.9), 0 0 30px rgba(74, 222, 128, 0.15);
  display: flex;
  flex-direction: column;
  height: 280px;
  position: relative;
}

.sim-box__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.sim-box__title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent-l);
  text-transform: uppercase;
}

.sim-box__close {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--muted);
  font-size: 0.9rem;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  transition: all 0.2s ease;
}

.sim-box__close:hover {
  background: rgba(239, 68, 68, 0.15);
  border-color: #ef4444;
  color: #ef4444;
}

.sim-content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.9rem;
  font-size: 0.85rem;
}

.sim-step {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  opacity: 0.2;
  transition: opacity 0.4s ease, transform 0.4s ease, color 0.4s ease;
  transform: translateX(-5px);
  color: var(--muted);
  line-height: 1.4;
}

.sim-step.is-active {
  opacity: 1;
  transform: translateX(0);
  color: #fff;
  font-weight: 500;
}

.sim-step.is-completed {
  opacity: 0.55;
  transform: translateX(0);
  color: var(--muted);
}

.sim-icon {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.55rem;
  font-weight: 800;
  color: var(--muted);
  flex-shrink: 0;
  margin-top: 1px;
}

.sim-step.is-active .sim-icon {
  border-color: var(--accent-l);
  color: var(--accent-l);
  background: rgba(74, 222, 128, 0.05);
  box-shadow: 0 0 10px rgba(74, 222, 128, 0.3);
}

.sim-step.is-completed .sim-icon {
  border-color: var(--accent-l);
  background: var(--accent-l);
  color: #0f0f15;
}

.sim-success-banner {
  text-align: center;
  margin-top: 0.75rem;
  padding: 0.45rem;
  border-radius: 6px;
  background: rgba(74, 222, 128, 0.1);
  border: 1px solid rgba(74, 222, 128, 0.2);
  color: var(--accent-l);
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Project Description Details */
.portfolio-card__details {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.portfolio-card__tag {
  display: inline-block;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-l);
  margin-bottom: 0.8rem;
}

.portfolio-card__title {
  font-size: 1.8rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  color: #fff;
  letter-spacing: -0.02em;
}

.portfolio-card__desc {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--muted);
  margin-bottom: 1.8rem;
}

.portfolio-card__metrics {
  display: flex;
  gap: 2rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.5rem;
}

.portfolio-metric {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.portfolio-metric__val {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent-l);
  line-height: 1.1;
  background: linear-gradient(135deg, var(--accent-d), var(--accent-l));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.portfolio-metric__label {
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.portfolio-card__section {
  margin-bottom: 1.2rem;
}

.portfolio-card__sect-title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 0.4rem;
}

.portfolio-card__sect-body {
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--muted);
}

.portfolio-card__sect-body strong {
  color: #fff;
}

/* Project Testimonial block */
.portfolio-quote {
  margin-top: 1.5rem;
  background: rgba(255, 255, 255, 0.015);
  border-left: 3px solid var(--accent-l);
  padding: 1rem 1.25rem;
  border-radius: 0 12px 12px 0;
}

.portfolio-quote__text {
  font-size: 0.88rem;
  font-style: italic;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 0.6rem;
}

.portfolio-quote__author {
  font-size: 0.78rem;
  font-weight: 600;
  color: #fff;
}

.portfolio-quote__author span {
  font-weight: 400;
  color: var(--muted);
}

/* Client Testimonials Section */
.testimonials-section {
  padding: 6rem 0;
  border-top: 1px solid var(--border);
  margin-top: 6rem;
}

.testimonials-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 3.5rem;
  letter-spacing: -0.02em;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.testimonial-card {
  background: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.3s ease;
}

.testimonial-card:hover {
  background: rgba(255, 255, 255, 0.02);
  border-color: rgba(255, 255, 255, 0.15);
}

.testimonial-card__quote {
  font-size: 0.95rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 1.8rem;
}

.testimonial-card__client {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.testimonial-card__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  background: #111;
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--accent-l);
  font-size: 0.9rem;
}

.testimonial-card__meta h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  margin: 0;
}

.testimonial-card__meta p {
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0;
}

/* Call To Action in Portfolio */
.portfolio-cta {
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.025), transparent);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 4rem 3rem;
  text-align: center;
  margin-top: 6rem;
  position: relative;
  overflow: hidden;
}

.portfolio-cta h2 {
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.75rem;
  letter-spacing: -0.020em;
}

.portfolio-cta p {
  font-size: 1.05rem;
  color: var(--muted);
  margin-bottom: 2.2rem;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* E-Commerce website tag styling */
.yoobuy-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent-l);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  transition: opacity 0.2s;
  margin-top: 0.5rem;
}

.yoobuy-link:hover {
  text-decoration: underline;
  opacity: 0.95;
}

/* Responsive adjustments */
@media (max-width: 900px) {
  .portfolio-card {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 1.8rem;
  }
  .portfolio-card__visual-wrap {
    min-height: 260px;
  }
}

@media (max-width: 640px) {
  .portfolio-page {
    padding: 6rem 1.25rem 3rem;
  }
  .portfolio-hero__title {
    font-size: 2.2rem;
  }
  .portfolio-grid {
    gap: 2.5rem;
  }
  .portfolio-card__metrics {
    flex-direction: column;
    gap: 1rem;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .portfolio-cta {
    padding: 3rem 1.5rem;
  }
}