:root {
  --font-sans: "Poppins", sans-serif;
  --font-serif: "Playfair Display", serif;

  --color-base: #0a0a0a;
  --color-surface: #1a1a1a;
  --color-primary: #ffffff;
  --color-secondary: #a0a0a0;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-whatsapp: #25d366;
  --color-whatsapp-shadow: rgba(37, 211, 102, 0.2);

  --header-height: 88px;
  
  --selection-bg: #ffc160;
  --selection-color: #0f0f0f;
  
  /* --selection-bg: #ffc26040;
  --selection-color: #ffc160; */
}

::selection {
  background: var(--selection-bg);
  color: var(--selection-color);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background:
    linear-gradient(rgba(0, 0, 0, 0.72), rgba(0, 0, 0, 0.72)),
    url('https://res.cloudinary.com/dwo3dfocn/image/upload/f_auto,q_auto/v1762827424/website_background_quality_ubhmtj.jpg');
  background-size: cover;
  background-color: var(--color-base);
  color: var(--color-primary);
  font-family: var(--font-sans);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-smoothing: grayscale;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
}

img,
video {
  max-width: 100%;
  height: auto;
  display: block;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 1.5rem;
}

#project-detail-container {
  padding: 0;
}

.page-content {
  padding-top: calc(var(--header-height) + 2rem);
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title,
.page-title {
  font-family: var(--font-serif);
  font-weight: 700;
}

.page-title {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2.25rem, 7vw, 3.125rem);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-secondary);
  max-width: 600px;
  margin: 1rem auto 0;
  line-height: 1.7;
}

/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding: 1rem 0;
}

.header-nav {
  display: flex;
  height: 64px;
  align-items: center;
  justify-content: space-between;
  background-color: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(9.5px);
  -webkit-backdrop-filter: blur(9.5px);
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  padding: 0 1rem 0 1.65rem;
  animation: slide-down 0.5s ease-out forwards;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 1rem;
}

.nav-links.active {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 80px;
  left: 1.5rem;
  right: 1.5rem;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  padding: 1rem;
  gap: 0.5rem;
  animation: fade-in 0.3s ease;
}

.nav-link {
  position: relative;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary);
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: var(--color-secondary);
}

.nav-link.active {
  color: var(--color-primary);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0.75rem;
  right: 0.75rem;
  height: 2px;
  background-color: var(--color-primary);
  animation: scale-x 0.3s ease;
}

.mobile-menu-toggle {
  display: block;
  background: none;
  border: none;
  color: var(--color-primary);
  padding: 0.5rem;
  cursor: pointer;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mobile-menu-toggle:hover {
  color: var(--color-primary);
  opacity: 0.8;
}
.mobile-menu-toggle svg {
  width: 24px;
  height: 24px;
}

/* --- Footer --- */
.footer {
  margin-top: 6rem;
  padding: 3rem 0;
  border-top: 1px solid var(--color-border);
}
.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  color: var(--color-secondary);
  font-size: 0.875rem;
  text-align: center;
}
.footer-social-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  order: -1;
}
.footer-social-links a {
  color: var(--color-secondary);
  transition: color 0.3s ease, transform 0.3s ease;
  display: inline-block;
}
.footer-social-links a:hover {
  color: var(--color-primary);
  transform: translateY(-2px);
}
.footer-text-right {
  display: block;
}

/* --- Home Page --- */
.hero-section {
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1rem;
  position: relative;
  overflow: hidden;
  background-image: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.09) 1px,
    transparent 1px
  );
  background-size: 20px 20px;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 15vw, 8rem);
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1;
}
.hero-title span {
  display: inline-block;
  animation: slide-up-reveal 1s cubic-bezier(0.19, 1, 0.22, 1) forwards;
  animation-delay: calc(var(--i) * 0.05s);
  opacity: 0;
  transform: translateY(100%);
}
.hero-subtitle {
  font-size: clamp(1.65rem, 5vw, 1.5rem);
  font-weight: 400;
  color: var(--color-secondary);
  margin-bottom: 2rem;
}

.cta-button {
  display: inline-block;
  background-color: var(--color-primary);
  color: var(--color-base);
  padding: 0.75rem 2rem;
  border-radius: 0.375rem;
  font-weight: 600;
  transition: transform 0.3s ease;
}
.cta-button:hover {
  transform: scale(1.05);
}

.about-section {
  padding: 6rem 0;
}
.about-text {
  font-size: 1.25rem;
  color: #ddc6b5;
  line-height: 1.8;
  max-width: 750px;
  margin: 0 auto;
  text-align: center;
}

.services-section {
  padding: 6rem 0;
  background-color: rgba(0, 0, 0, 0.2);
}
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.service-card {
  position: relative;
  padding: 2rem;
  overflow: hidden;
  background-color: #97979726;
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  transition: all 0.3s ease;
}
.service-card:hover {
  border-color: rgba(255, 255, 255, 0.3);
  background-color: rgba(255, 255, 255, 0.05);
}
.service-card-icon-bg {
  position: absolute;
  top: -3rem;
  right: -3rem;
  width: 9rem;
  height: 9rem;
  color: rgba(255, 255, 255, 0.05);
  transition: color 0.3s ease;
}
.service-card:hover .service-card-icon-bg {
  color: rgba(255, 255, 255, 0.1);
}
.service-card-content {
  position: relative;
  z-index: 1;
}
.service-card-icon {
  width: 3rem;
  height: 3rem;
  margin-bottom: 1rem;
  color: var(--color-primary);
}
.service-card h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}
.service-card p {
  color: var(--color-secondary);
  line-height: 1.6;
}

/* --- Work Page --- */
.filter-container {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 3rem;
}

.filter-button {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 9999px;
  border: none;
  cursor: pointer;
  background-color: var(--color-surface);
  color: var(--color-secondary);
  transition: all 0.3s ease;
}

.filter-button:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.filter-button.active {
  background-color: var(--color-primary);
  color: var(--color-base);
}

.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
.project-card {
  display: block;
  position: relative;
  overflow: hidden;
  border-radius: 0.5rem;
  aspect-ratio: 4 / 3;
  animation: pop-in 0.5s ease-out forwards;
  transform-origin: bottom;
}
.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.project-card:hover img {
  transform: scale(1.05);
}
.project-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.8),
    rgba(0, 0, 0, 0.4),
    transparent
  );
}
.project-card-content {
  position: absolute;
  inset: 0;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.project-card-tag {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-secondary);
  background-color: rgba(0, 0, 0, 0.3);
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  align-self: flex-start;
}
.project-card-title {
  margin-top: 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-primary);
}

/* --- Project Detail Page --- */
.back-link {
  display: inline-block;
  color: var(--color-secondary);
  margin-bottom: 3rem;
  transition: color 0.3s ease;
  padding: 0 1.5rem;
}
.back-link:hover {
  color: var(--color-primary);
}
.project-header{
  padding: 0 1.5rem;
}
.project-header-category {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-secondary);
}
.project-header-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  margin: 1rem 0;
}
.project-header-description {
  font-size: 1.125rem;
  color: var(--color-secondary);
  max-width: 750px;
  line-height: 1.7;
}
.project-gallery {
  margin-top: 4rem;
  display: grid;
  gap: 0rem;
}
.project-gallery img,
.project-gallery video {
  width: 100%;
}

/* --- Hire Me Page --- */
.hire-me-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1rem;
}
.social-links-container {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin: 3rem 0;
  justify-content: center;
}
.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-secondary);
  transition: all 0.3s ease;
}
.social-link:hover {
  color: var(--color-primary);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px) scale(1.1);
}
.whatsapp-button {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  background-color: var(--color-whatsapp);
  color: var(--color-primary);
  font-weight: 700;
  border-radius: 9999px;
  box-shadow: 0 4px 14px 0 var(--color-whatsapp-shadow);
  transition: all 0.3s ease;
}
.whatsapp-button:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px 0 var(--color-whatsapp-shadow);
}

/* --- Animations --- */
.animate-on-scroll {
  opacity: 0;
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
  transition-delay: var(--delay, 0s);
}
.animate-on-scroll.is-visible {
  opacity: 1;
}

@keyframes slide-down {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}
@keyframes slide-up {
  from {
    transform: translateY(100px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}
@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
@keyframes scale-x {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}
@keyframes pop-in {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}
@keyframes slide-up-reveal {
  from {
    opacity: 0;
    transform: translateY(100%);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  animation: fade-in-up 0.8s ease-out forwards;
  animation-delay: var(--delay, 0s);
  opacity: 0;
}
@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.animate-fade-in-down {
  animation: fade-in-down 0.8s ease-out forwards;
  animation-delay: var(--delay, 0s);
  opacity: 0;
}
@keyframes fade-in-down {
  from {
    opacity: 0;
    transform: translateY(-40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Media Queries --- */
@media (min-width: 640px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .project-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
  .mobile-menu-toggle {
    display: none;
  }
  .nav-link.active::after {
    animation: none; /* Disable animation on larger screens for stability */
  }
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
  }
  .footer-social-links {
    order: 0;
  }
}

@media (min-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .project-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}