/* ========================================= */
/* PROJECTS PAGE CONFIGURATIONS              */
/* ========================================= */
:root {
  /* Hero */
  --projects-hero-min-height: 60vh;
  --projects-hero-padding-top: calc(var(--nav-height) + 60px);
  --projects-hero-padding-bottom: 80px;
  --projects-hero-overlay: linear-gradient(135deg, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.5) 50%, rgba(0, 0, 0, 0.3) 100%);
  --projects-hero-overlay-desktop: linear-gradient(to right, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.6) 50%, rgba(0, 0, 0, 0.15) 100%);

  /* Shared Section Spacing */
  --section-padding-y: clamp(4rem, 8vh, 7rem);

  /* Body Text - Matching Bootstrap secondary */
  --body-text-color: rgba(33, 37, 41, 0.75);
  --body-text-size: clamp(1rem, 0.5vw + 0.65rem, 1.25rem);
  --body-line-height: 1.7;

  /* Project Category Cards */
  --project-card-radius: 1rem;
  --project-card-bg: var(--bg-white);
  --project-card-border: #e9ecef;
  --project-card-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --project-card-shadow-hover: 0 8px 30px rgba(71, 94, 106, 0.12);
  --project-card-transform-hover: translateY(-4px);
  --project-card-transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* Project Card Header */
  --project-header-min-height: 260px;
  --project-header-padding: 1.75rem;
  --project-header-overlay: linear-gradient(180deg, transparent 35%, rgba(0, 0, 0, 0.8) 100%);

  /* Project Card Details */
  --project-details-bg: var(--primary-faint);
  --project-details-padding: 1.75rem;
  --project-details-transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  /* Toggle Icon */
  --toggle-icon-size: 32px;
  --toggle-icon-font-size: 0.8rem;
  --toggle-icon-bg: rgba(255, 255, 255, 0.15);
  --toggle-icon-bg-active: var(--primary);
  --toggle-icon-transition: 0.3s ease;

  /* Section Background */
  --projects-section-bg: #f8f9fa;
}

/* ========================================= */
/* ANIMATIONS                                */
/* ========================================= */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(25px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes iconPulse {
  0% {
    transform: scale(1) rotate(180deg);
  }
  50% {
    transform: scale(1.15) rotate(180deg);
  }
  100% {
    transform: scale(1) rotate(180deg);
  }
}

/* ========================================= */
/* HERO SECTION                              */
/* ========================================= */
.projects-hero {
  position: relative;
  min-height: var(--projects-hero-min-height);
  padding: var(--projects-hero-padding-top) 0 var(--projects-hero-padding-bottom);
  color: var(--text-white);
}

.projects-hero .hero-bg-picture {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.projects-hero .hero-bg-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.projects-hero .hero-overlay {
  z-index: 2;
  background: var(--projects-hero-overlay);
}

.projects-hero .hero-eyebrow {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  opacity: 0;
  animation: fadeInUp 0.5s ease-out 0.1s forwards;
}

.projects-hero .hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeInUp 0.5s ease-out 0.2s forwards;
}

.projects-hero .hero-subtitle {
  font-size: clamp(1rem, 0.5vw + 0.9rem, 1.2rem);
  font-weight: 600;
  max-width: 600px;
  line-height: var(--body-line-height);
  padding-inline-start: 20px;
  border-inline-start: 3px solid rgba(255, 255, 255, 0.4);
  opacity: 0;
  animation: fadeInUp 0.5s ease-out 0.3s forwards;
}

@media (min-width: 992px) {
  .projects-hero .hero-overlay {
    background: var(--projects-hero-overlay-desktop);
  }
}

@media (max-width: 991.98px) {
  .projects-hero {
    min-height: 55vh;
    padding: calc(var(--mobile-nav-height) + 50px) 0 60px;
  }

  .projects-hero .hero-eyebrow {
    font-size: 0.9rem;
  }

  .projects-hero .hero-title {
    font-size: clamp(2rem, 5vw, 3rem);
  }

  .projects-hero .hero-subtitle {
    padding-inline-start: 16px;
  }
}

@media (max-width: 767.98px) {
  .projects-hero {
    min-height: 50vh;
    padding: calc(var(--mobile-nav-height) + 40px) 0 50px;
    text-align: center;
  }

  .projects-hero .hero-eyebrow {
    font-size: 0.85rem;
    letter-spacing: 2px;
  }

  .projects-hero .hero-title {
    letter-spacing: -0.5px;
  }

  .projects-hero .hero-subtitle {
    padding-inline-start: 0;
    border-inline-start: none;
    padding-top: 16px;
    border-top: 2px solid rgba(255, 255, 255, 0.3);
    max-width: 100%;
  }
}

/* ========================================= */
/* PROJECTS SECTION                          */
/* ========================================= */
.projects-section {
  background-color: var(--projects-section-bg);
  padding: var(--section-padding-y) 0;
}

/* ========================================= */
/* PROJECT CATEGORY CARD                     */
/* ========================================= */
.project-category-card {
  background-color: var(--project-card-bg);
  border: 1px solid var(--project-card-border);
  border-radius: var(--project-card-radius);
  overflow: hidden;
  box-shadow: var(--project-card-shadow);
  transition: transform var(--project-card-transition), box-shadow var(--project-card-transition), border-color var(--project-card-transition);
  animation: fadeInUp 0.5s ease-out forwards;
}

@media (hover: hover) {
  .project-category-card:hover {
    box-shadow: var(--project-card-shadow-hover);
    border-color: var(--primary);
    transform: var(--project-card-transform-hover);
  }

  .project-card-header:hover .project-card-bg {
    transform: scale(1.06);
  }
}

/* ========================================= */
/* PROJECT CARD HEADER                       */
/* ========================================= */
.project-card-header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  position: relative;
  min-height: var(--project-header-min-height);
  padding: var(--project-header-padding);
  cursor: pointer;
  user-select: none;
  overflow: hidden;
  transition: all var(--project-card-transition);
}

.project-card-header:focus {
  outline: none;
}

/* Card Background */
.project-card-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.5s ease;
  z-index: 1;
}

/* Card Overlay */
.project-card-overlay {
  position: absolute;
  inset: 0;
  background: var(--project-header-overlay);
  z-index: 2;
}

/* Card Title */
.project-card-title {
  position: relative;
  z-index: 3;
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.25;
  margin: 0 0 0.6rem 0;
}

/* Toggle Wrapper */
.project-card-toggle-wrapper {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.project-card-toggle-text {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
  font-size: 0.9rem;
  transition: color var(--toggle-icon-transition);
}

.project-toggle-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--toggle-icon-size);
  height: var(--toggle-icon-size);
  background-color: var(--toggle-icon-bg);
  border-radius: 50%;
  color: var(--text-white);
  font-size: var(--toggle-icon-font-size);
  transition: all var(--toggle-icon-transition);
}

/* Active State */
.project-category-card.active .project-toggle-icon {
  background-color: var(--toggle-icon-bg-active);
  color: var(--text-white);
  transform: rotate(180deg);
}

.project-category-card.active .project-card-toggle-text {
  color: var(--text-white);
}

/* ========================================= */
/* PROJECT CARD DETAILS                      */
/* ========================================= */
.project-card-details {
  max-height: 0;
  overflow: hidden;
  background-color: var(--project-details-bg);
  padding: 0 var(--project-details-padding);
  transition: all var(--project-details-transition);
}

.project-category-card.active .project-card-details {
  max-height: 2000px;
  padding: var(--project-details-padding);
}

/* Project List */
.project-list {
  list-style: none;
  padding: 0;
  margin: 0;
  column-count: 2;
  column-gap: 2rem;
}

.project-list-item {
  font-size: var(--body-text-size);
  color: var(--text-dark);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: flex-start;
  break-inside: avoid-column;
  line-height: 1.6;
}

.project-list-item::before {
  content: '\f0da';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  color: var(--primary);
  margin-inline-end: 0.75rem;
  margin-top: 3px;
  flex-shrink: 0;
}

/* ========================================= */
/* LOADING & ERROR STATES                    */
/* ========================================= */
#projects-loader {
  min-height: 150px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.projects-error {
  text-align: center;
  padding: 3rem;
  color: var(--text-muted);
}

.projects-error i {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  opacity: 0.4;
}

/* ========================================= */
/* RESPONSIVE                                */
/* ========================================= */
@media (max-width: 991.98px) {
  .project-list {
    column-count: 1;
  }

  .project-card-title {
    font-size: 1.5rem;
  }
}

@media (max-width: 767.98px) {
  .project-card-header {
    min-height: 220px;
    padding: 1.5rem;
  }

  .project-card-title {
    font-size: 1.35rem;
  }

  .project-card-toggle-text {
    font-size: 0.85rem;
  }

  .project-toggle-icon {
    width: 28px;
    height: 28px;
    font-size: 0.75rem;
  }

  .project-card-details {
    padding: 0 1.5rem;
  }

  .project-category-card.active .project-card-details {
    padding: 1.5rem;
  }

  .project-category-card.active .project-toggle-icon {
    animation: iconPulse 0.4s ease-out;
  }
}

@media (max-width: 575.98px) {
  .project-card-header {
    min-height: 200px;
    padding: 1.25rem;
  }

  .project-card-title {
    font-size: 1.2rem;
  }

  .project-card-details {
    padding: 0 1.25rem;
  }

  .project-category-card.active .project-card-details {
    padding: 1.25rem;
  }
}

/* ========================================= */
/* RTL SUPPORT                               */
/* ========================================= */
html[dir='rtl'] .projects-hero .hero-eyebrow,
html[dir='rtl'] .projects-hero .hero-title {
  letter-spacing: 0;
}

html[dir='rtl'] .projects-hero .hero-bg-image {
  transform: scaleX(-1);
}

html[dir='rtl'] .project-list-item::before {
  content: '\f0d9';
}

html[dir='rtl'] .project-card-toggle-wrapper {
  flex-direction: row-reverse;
}

html[dir='rtl'] .project-category-card.active .project-toggle-icon {
  transform: rotate(-180deg);
}

@media (min-width: 992px) {
  html[dir='rtl'] .projects-hero .hero-overlay {
    background: linear-gradient(to left, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.6) 50%, rgba(0, 0, 0, 0.15) 100%);
  }
}