/* ============================================================
   Base & Reset
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg:        #0f172a;
  --color-bg-alt:    #1e293b;
  --color-surface:   #1e293b;
  --color-border:    #334155;
  --color-primary:   #6366f1;
  --color-primary-h: #818cf8;
  --color-text:      #e2e8f0;
  --color-muted:     #94a3b8;
  --color-accent:    #38bdf8;
  --radius:          0.75rem;
  --shadow:          0 4px 24px rgba(0,0,0,0.4);
  --transition:      0.25s ease;
  --nav-height:      68px;
  --font:            'Inter', system-ui, sans-serif;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img { max-width: 100%; display: block; }

ul { list-style: none; }

/* ============================================================
   Utility
   ============================================================ */
.container {
  width: min(1100px, 92vw);
  margin-inline: auto;
}

.section {
  padding-block: 6rem;
  position: relative;
  overflow: hidden;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 3rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -10px;
  width: 50px;
  height: 4px;
  background: var(--color-primary);
  border-radius: 2px;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  border: 2px solid transparent;
  text-align: center;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-h);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(99,102,241,0.4);
}

.btn-outline {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}

/* ============================================================
   Navbar
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  background: rgba(15,23,42,0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.4);
}

.nav-container {
  width: min(1100px, 92vw);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-muted);
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* Mobile nav open state */
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-height) + 2rem) 1.5rem 4rem;
  background: radial-gradient(ellipse at 50% 0%, rgba(99,102,241,0.15) 0%, transparent 65%);
  position: relative;
  overflow: hidden;
}

.hero-greeting {
  font-size: 1.1rem;
  color: var(--color-primary);
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.hero-name {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(135deg, #e2e8f0 30%, var(--color-primary-h));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1rem;
}

.hero-tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 1.25rem;
}

.hero-description {
  max-width: 500px;
  color: var(--color-muted);
  margin-inline: auto;
  margin-bottom: 2.5rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* JS-driven hero entrance — applied once DOM is ready */
.js-animate .hero-greeting {
  animation: fadeUp 0.8s 0.2s forwards;
}

.js-animate .hero-name {
  animation: fadeUp 0.8s 0.4s forwards;
}

.js-animate .hero-tagline {
  animation: fadeUp 0.8s 0.6s forwards;
}

.js-animate .hero-description {
  animation: fadeUp 0.8s 0.8s forwards;
}

.js-animate .hero-cta {
  animation: fadeUp 0.8s 1s forwards;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.hero-scroll-indicator span {
  display: block;
  width: 24px;
  height: 40px;
  border: 2px solid var(--color-border);
  border-radius: 12px;
  position: relative;
}

.hero-scroll-indicator span::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 6px;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 2px;
  animation: scrollDot 2s infinite;
}

/* ============================================================
   About
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-text p {
  color: var(--color-muted);
  margin-bottom: 1rem;
  font-size: 1.05rem;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.stat-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem 1.25rem;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--color-primary);
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
}

.stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-top: 0.25rem;
}

/* ============================================================
   Skills
   ============================================================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.skill-category {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
}

.skill-category h3 {
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
}

.skill-list {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.skill-list li {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.skill-name {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
}

.skill-bar {
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 3px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   Projects
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: var(--color-primary);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.project-icon {
  font-size: 2rem;
}

.project-links {
  display: flex;
  gap: 0.75rem;
}

.project-links a {
  font-size: 1.1rem;
  color: var(--color-muted);
  transition: color var(--transition);
}

.project-links a:hover {
  color: var(--color-primary);
}

.project-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.project-card p {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.6;
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.project-tags span {
  background: rgba(99,102,241,0.15);
  color: var(--color-primary-h);
  border-radius: 4px;
  padding: 0.25rem 0.6rem;
  font-size: 0.78rem;
  font-weight: 500;
  border: 1px solid rgba(99,102,241,0.25);
}

/* ============================================================
   Contact
   ============================================================ */
.contact-intro {
  color: var(--color-muted);
  max-width: 540px;
  margin-bottom: 2.5rem;
  font-size: 1.05rem;
}

.contact-form {
  max-width: 640px;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-muted);
}

.form-group input,
.form-group textarea {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  font-family: var(--font);
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #475569;
}

.form-status {
  font-size: 0.9rem;
  min-height: 1.4em;
  color: var(--color-accent);
}

.social-links {
  display: flex;
  gap: 1.25rem;
  margin-top: 3rem;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-muted);
  transition: color var(--transition), border-color var(--transition), transform var(--transition);
}

.social-links a:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-3px);
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding-block: 1.75rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-muted);
}

.footer strong {
  color: var(--color-text);
}

/* ============================================================
   Animations
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

@keyframes scrollDot {
  0%   { top: 6px; opacity: 1; }
  80%  { top: 18px; opacity: 0; }
  100% { top: 6px; opacity: 0; }
}

/* Scroll-reveal utility */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    background: rgba(15,23,42,0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    align-items: center;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
  }

  .nav-links.open {
    max-height: 300px;
    padding-block: 1.25rem;
  }

  .nav-links li {
    width: 100%;
    text-align: center;
  }

  .nav-links a {
    display: block;
    padding: 0.85rem 0;
    font-size: 1rem;
  }

  .hamburger {
    display: flex;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
}

/* ============================================================
   Project Filtering & Blog Style
   ============================================================ */
.filter-container {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.6rem 1.25rem;
  border: 2px solid var(--color-border);
  background: transparent;
  color: var(--color-muted);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.projects-blog {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.project-blog-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
  padding: 2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.project-blog-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.project-blog-item.hidden {
  display: none;
}

.project-blog-content {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.project-blog-meta {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-bottom: 0.5rem;
}

.project-date {
  font-size: 0.85rem;
  color: var(--color-muted);
  font-weight: 500;
}

.project-category {
  font-size: 0.75rem;
  background: rgba(99,102,241,0.15);
  color: var(--color-primary-h);
  padding: 0.3rem 0.7rem;
  border-radius: 3px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.project-blog-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0.5rem 0;
}

.project-blog-excerpt {
  font-size: 1rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin: 0.5rem 0;
}

.project-blog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

.project-blog-tags span {
  background: rgba(99,102,241,0.1);
  color: var(--color-primary-h);
  border-radius: 3px;
  padding: 0.3rem 0.65rem;
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid rgba(99,102,241,0.2);
}

.btn-sm {
  padding: 0.6rem 1.25rem;
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

.project-blog-icon {
  font-size: 3.5rem;
  text-align: center;
  opacity: 0.8;
  transition: transform var(--transition);
}

.project-blog-item:hover .project-blog-icon {
  transform: scale(1.1);
}

/* ============================================================
   Project Details Page
   ============================================================ */
.project-detail-header {
  background: linear-gradient(135deg, rgba(99,102,241,0.1) 0%, rgba(56,189,248,0.1) 100%);
  padding: 3rem 0;
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--color-border);
}

.project-detail-actions {
  margin-bottom: 1.25rem;
}

.project-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.project-detail-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.project-detail-meta {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.project-detail-meta span {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.project-detail-content {
  max-width: 800px;
  margin: 0 auto;
}

.project-detail-section {
  margin-bottom: 3rem;
}

.project-detail-section h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.project-detail-section p {
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 1rem;
  font-size: 1.05rem;
}

.project-detail-features {
  list-style: none;
  margin: 1.5rem 0;
}

.project-detail-features li {
  color: var(--color-muted);
  margin-bottom: 0.75rem;
  padding-left: 1.5rem;
  position: relative;
  line-height: 1.6;
}

.project-detail-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

.project-links-detail {
  display: flex;
  gap: 1rem;
  margin: 2rem 0;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .project-blog-item {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .project-blog-icon {
    font-size: 2.5rem;
  }

  .project-blog-title {
    font-size: 1.25rem;
  }

  /* ============================================================
     Futuristic Projects Table
     ============================================================ */
  .projects-table-wrap {
    background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
    border: 1px solid rgba(100,116,139,0.12);
    padding: 1.25rem;
    border-radius: calc(var(--radius) + 0.25rem);
    box-shadow: 0 8px 40px rgba(2,6,23,0.6), inset 0 1px 0 rgba(255,255,255,0.02);
    backdrop-filter: blur(6px) saturate(120%);
  }

  .projects-controls {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 0.85rem;
  }

  #project-filter {
    background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent);
    color: var(--color-text);
    border: 1px solid rgba(100,116,139,0.12);
    padding: 0.5rem 0.75rem;
    border-radius: 999px;
    font-weight: 600;
    box-shadow: 0 6px 18px rgba(2,6,23,0.6);
    appearance: none;
  }

  .projects-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 10px;
  }

  .projects-table thead th {
    text-align: left;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-accent);
    padding: 0.85rem 1rem;
    text-transform: uppercase;
    letter-spacing: 0.8px;
  }

  .projects-table tbody tr {
    background: linear-gradient(90deg, rgba(255,255,255,0.01), rgba(255,255,255,0.015));
    transition: transform 180ms ease, box-shadow 220ms ease, background 220ms ease;
    border-radius: 12px;
    overflow: hidden;
  }

  .projects-table tbody tr:hover {
    transform: translateY(-6px);
    box-shadow: 0 14px 40px rgba(2,6,23,0.6), 0 0 18px rgba(99,102,241,0.06);
    background: linear-gradient(90deg, rgba(99,102,241,0.03), rgba(56,189,248,0.02));
  }

  .projects-table td {
    padding: 0.95rem 1rem;
    border-bottom: none;
    color: var(--color-text);
    vertical-align: middle;
    font-size: 0.95rem;
  }

  .projects-table tbody tr td:first-child {
    position: relative;
    padding-left: 1.6rem;
  }

  .projects-table tbody tr td:first-child::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 12px;
    bottom: 12px;
    width: 3px;
    background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
    border-radius: 3px;
    box-shadow: 0 6px 18px rgba(99,102,241,0.18);
  }

  .projects-table a { color: var(--color-text); font-weight: 700; }

  /* Compact on small screens: stack rows as cards */
  @media (max-width: 720px) {
    .projects-table thead { display: none; }
    .projects-table tbody tr { display: block; margin-bottom: 12px; }
    .projects-table td { display: block; padding: 0.85rem; }
    .projects-table tbody tr td:first-child::before { left: 10px; top: 10px; bottom: auto; height: 6px; width: 6px; border-radius: 50%; }
  }
}
/* ============================================================
   Gallery
   ============================================================ */
.gallery-subtitle {
  color: var(--color-muted);
  font-size: 1.05rem;
  margin: -1.5rem 0 2.5rem 0;
  font-weight: 400;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  height: 220px;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}

.gallery-item:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow);
}

.gallery-item-lg {
  grid-column: span 2;
  grid-row: span 2;
  height: auto;
}

.gallery-item-lg-corner {
  grid-column: span 2;
}

.gallery-image {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.75rem;
  position: relative;
  border: 2px solid var(--color-border);
  transition: all var(--transition);
}

.gallery-item:hover .gallery-image {
  border-color: var(--color-primary);
}

.gallery-icon {
  font-size: 3rem;
  animation: float 3s ease-in-out infinite;
}

.gallery-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
  text-align: center;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.gallery-note {
  text-align: center;
  color: var(--color-muted);
  font-size: 0.9rem;
  padding: 1.5rem;
  background: var(--color-bg);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius);
  margin-top: 1.5rem;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@media (max-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .gallery-item {
    height: 150px;
  }

  .gallery-item-lg,
  .gallery-item-lg-corner {
    grid-column: span 1;
  }
}

/* ============================================================
   Faded Background Photos (Scroll Effect)
   ============================================================ */
.hero-photo {
  position: absolute;
  width: 600px;
  height: 700px;
  right: -150px;
  top: 50%;
  transform: translateY(-50%);
  border-radius: var(--radius);
  opacity: 0;
  transition: opacity 0.6s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.hero-photo-1 {
  animation: fadeInRight 1.2s ease 0.8s forwards;
}

.section-photo {
  position: absolute;
  width: 250px;
  height: 350px;
  border-radius: var(--radius);
  opacity: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.section-photo-left {
  left: -125px;
  top: 50%;
  transform: translateY(-50%);
}

.section-photo-right {
  right: -125px;
  top: 50%;
  transform: translateY(-50%);
}

.photo-label {
  display: block;
  filter: drop-shadow(2px 2px 4px rgba(0, 0, 0, 0.3));
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateY(-50%) translateX(50px);
  }
  to {
    opacity: 0.15;
    transform: translateY(-50%) translateX(0);
  }
}

@keyframes fadeOutRight {
  from {
    opacity: 0.15;
    transform: translateY(-50%) translateX(0);
  }
  to {
    opacity: 0;
    transform: translateY(-50%) translateX(50px);
  }
}

/* Fade in effect when section enters view */
.section-photo.fade-in {
  animation: fadeInRight 0.8s ease forwards;
}

/* Fade out effect when section leaves view */
.section-photo.fade-out {
  animation: fadeOutRight 0.8s ease forwards;
}

.hero-photo.fade-in {
  animation: fadeInRight 0.8s ease forwards;
}

.hero-photo.fade-out {
  animation: fadeOutRight 0.8s ease forwards;
}

@media (max-width: 1024px) {
  .hero-photo,
  .section-photo {
    width: 200px;
    height: 300px;
    font-size: 3rem;
  }

  .hero-photo {
    right: -100px;
  }

  .section-photo-left {
    left: -100px;
  }

  .section-photo-right {
    right: -100px;
  }
}

@media (max-width: 768px) {
  .hero-photo,
  .section-photo {
    display: none;
  }
}

@media (max-width: 480px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .filter-container {
    gap: 0.5rem;
  }

  .filter-btn {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
  }

  .project-detail-title {
    font-size: 1.75rem;
  }

  .project-detail-actions {
    margin-bottom: 1rem;
  }

  .project-back-btn {
    width: 100%;
    justify-content: center;
  }
}