@import url('https://fonts.googleapis.com/css2?family=Kanit:wght@300;400;500;700;900&display=swap');

/* GLOBAL RESET */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  background-color: #0C0C0C;
  color: #D7E2EA;
  font-family: 'Kanit', sans-serif;
  overflow-x: hidden;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#root, .main-wrapper {
  background-color: #0C0C0C;
  width: 100%;
  overflow-x: clip;
}

/* GRADIENT TEXT CLASS */
.hero-heading {
  background: linear-gradient(180deg, #646973 0%, #BBCCD7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* REUSABLE COMPONENTS */

/* Contact Button */
.btn-contact {
  background: linear-gradient(123deg, #04160C 7%, #0A8F45 37%, #22C55E 72%, #8BFFB8 100%);
  box-shadow: 0px 4px 12px rgba(10, 143, 69, 0.3), inset 4px 4px 12px #14984F;
  outline: 2px solid #FFFFFF;
  outline-offset: -3px;
  border: none;
  border-radius: 9999px;
  color: #FFFFFF;
  font-family: 'Kanit', sans-serif;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s cubic-bezier(0.25, 0.1, 0.25, 1), 
              filter 0.2s cubic-bezier(0.25, 0.1, 0.25, 1),
              box-shadow 0.2s cubic-bezier(0.25, 0.1, 0.25, 1);
  padding: 0.75rem 2rem;
  font-size: 0.75rem;
  text-decoration: none;
  white-space: nowrap;
}

@media (min-width: 640px) {
  .btn-contact {
    padding: 0.875rem 2.5rem;
    font-size: 0.875rem;
  }
}

@media (min-width: 768px) {
  .btn-contact {
    padding: 1rem 3rem;
    font-size: 1rem;
  }
}

.btn-contact:hover {
  transform: translateY(-2px) scale(1.03);
  filter: brightness(1.1);
  box-shadow: 0px 8px 18px rgba(10, 143, 69, 0.42), inset 4px 4px 12px #14984F;
}

.btn-contact:active {
  transform: translateY(1px) scale(0.98);
}

/* Secondary CTA Button */
.btn-live-project {
  border: 2px solid #67F39B;
  background-color: transparent;
  border-radius: 9999px;
  color: #67F39B;
  font-family: 'Kanit', sans-serif;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s cubic-bezier(0.25, 0.1, 0.25, 1), 
              transform 0.2s cubic-bezier(0.25, 0.1, 0.25, 1),
              box-shadow 0.2s cubic-bezier(0.25, 0.1, 0.25, 1);
  padding: 0.75rem 2rem;
  font-size: 0.875rem;
  text-decoration: none;
}

@media (min-width: 640px) {
  .btn-live-project {
    padding: 0.875rem 2.5rem;
    font-size: 1rem;
  }
}

.btn-live-project:hover {
  background-color: rgba(103, 243, 155, 0.12);
  box-shadow: 0px 6px 16px rgba(10, 143, 69, 0.18);
  transform: translateY(-2px);
}

.btn-live-project:active {
  transform: translateY(1px);
}

/* SECTION 1: HERO SECTION */
.hero-section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: clamp(2.5rem, 6vw, 4rem) 0 2rem 0;
  background-color: #020405;
  isolation: isolate;
  --hero-shift-x: 0px;
  --hero-shift-y: 0px;
  --hero-rotate-x: 0deg;
  --hero-rotate-y: 0deg;
}

.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 46%, rgba(215, 226, 234, 0.1) 0%, rgba(99, 113, 124, 0.06) 20%, rgba(2, 4, 5, 0) 54%),
    linear-gradient(180deg, #050708 0%, #020405 68%, #020405 100%);
  pointer-events: none;
  z-index: 0;
}

.hero-section::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: clamp(10rem, 22vw, 18rem);
  background: linear-gradient(180deg, rgba(2, 4, 5, 0) 0%, rgba(2, 4, 5, 0) 18%, rgba(2, 4, 5, 0.44) 58%, #020405 100%);
  pointer-events: none;
  z-index: 12;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 1.5rem 0 1.5rem;
  z-index: 30;
}

@media (min-width: 768px) {
  .navbar {
    padding: 2rem 2.5rem 0 2.5rem;
  }
}

.navbar-links {
  display: flex;
  justify-content: space-between;
  width: 100%;
}

.nav-link {
  color: #D7E2EA;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  font-size: 0.875rem;
  transition: opacity 0.2s ease;
}

@media (min-width: 768px) {
  .nav-link {
    font-size: 1.125rem;
  }
}

@media (min-width: 1024px) {
  .nav-link {
    font-size: 1.4rem;
  }
}

.nav-link:hover {
  opacity: 0.7;
}

/* Heading Container */
.hero-heading-container {
  overflow: hidden;
  width: 100%;
  margin-top: 0;
  padding: 0 1rem;
  z-index: 8;
  position: relative;
  pointer-events: none;
}

@media (min-width: 640px) {
  .hero-heading-container {
    padding: 0 1.5rem;
  }
}

@media (min-width: 768px) {
  .hero-heading-container {
    padding: 0 2.5rem;
  }
}

.hero-heading-text {
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.045em;
  line-height: 0.88;
  width: 100%;
  text-align: center;
  max-width: 1200px;
  margin: 0 auto;
  font-size: clamp(3rem, 8vw, 7rem);
  opacity: 0.94;
}

@media (min-width: 640px) {
  .hero-heading-text {
    font-size: clamp(3.7rem, 8vw, 7.8rem);
  }
}

@media (min-width: 768px) {
  .hero-heading-text {
    font-size: clamp(4.3rem, 7.2vw, 8.4rem);
  }
}

@media (min-width: 1024px) {
  .hero-heading-text {
    font-size: clamp(4.8rem, 6.7vw, 8.8rem);
  }
}

.hero-heading-text span {
  display: block;
}

.hero-portrait-shell {
  position: absolute;
  left: 50%;
  top: 54%;
  width: min(50vw, 480px);
  opacity: 0;
  animation: heroPortraitReveal 0.75s cubic-bezier(0.25, 0.1, 0.25, 1) 0.25s forwards;
  transform: translate3d(calc(-50% + var(--hero-shift-x)), calc(-50% + var(--hero-shift-y)), 0)
             rotateX(var(--hero-rotate-x))
             rotateY(var(--hero-rotate-y));
  transform-style: preserve-3d;
  transform-origin: center center;
  transition: transform 0.04s linear;
  z-index: 18;
  pointer-events: none;
  will-change: transform;
  filter: drop-shadow(0 3rem 3.5rem rgba(0, 0, 0, 0.54));
}

@keyframes heroPortraitReveal {
  to {
    opacity: 1;
  }
}

.hero-portrait {
  display: block;
  width: 100%;
  height: auto;
  user-select: none;
  transform: translateZ(28px);
}

.hero-portrait-shell::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2%;
  width: 54%;
  height: 8%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.5);
  filter: blur(22px);
  border-radius: 50%;
  z-index: -1;
}

@media (min-width: 768px) {
  .hero-portrait-shell {
    top: 55%;
    width: min(31vw, 420px);
  }
}

@media (min-width: 1200px) {
  .hero-portrait-shell {
    top: 56%;
    width: min(27vw, 440px);
  }
}

.hero-cta-row {
  display: flex;
  justify-content: center;
  align-items: center;
  position: absolute;
  left: 50%;
  bottom: clamp(1.75rem, 5vh, 3rem);
  transform: translateX(-50%);
  z-index: 25;
}

@media (max-width: 767px) {
  .hero-cta-row {
    top: 73%;
    bottom: auto;
  }
}

.hero-bio {
  color: #D7E2EA;
  font-weight: 300;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1.3;
  font-size: clamp(0.72rem, 1.1vw, 1.05rem);
  max-width: 680px;
  text-align: center;
  margin: clamp(0.9rem, 2vw, 1.4rem) auto 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 25;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.72);
}

@media (min-width: 640px) {
  .hero-bio {
    max-width: 720px;
  }
}

@media (min-width: 768px) {
  .hero-bio {
    max-width: 760px;
  }
}

/* LOAD ANIMATION ENGINE */
.fade-in-load {
  opacity: 0;
  transform: translate(var(--start-x, 0px), var(--start-y, 0px));
  animation: fadeInLoad var(--duration, 0.7s) cubic-bezier(0.25, 0.1, 0.25, 1) forwards;
  animation-delay: var(--delay, 0s);
}

@keyframes fadeInLoad {
  to {
    opacity: 1;
    transform: translate(0, 0);
  }
}

/* SECTION 2: MARQUEE SECTION */
.marquee-section {
  position: relative;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(107, 157, 178, 0.08) 0%, rgba(43, 76, 91, 0.04) 30%, rgba(2, 4, 5, 0) 64%),
    linear-gradient(180deg, #020405 0%, #05090b 28%, #0C0C0C 100%);
  margin-top: 0;
  padding-top: clamp(7rem, 13vw, 10rem);
  padding-bottom: 2.5rem;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0.75rem; /* gap-3 */
}

.marquee-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: clamp(6rem, 12vw, 9rem);
  background: linear-gradient(180deg, #020405 0%, rgba(2, 4, 5, 0.7) 42%, rgba(12, 12, 12, 0) 100%);
  pointer-events: none;
  z-index: 0;
}

.marquee-heading {
  position: relative;
  z-index: 1;
  text-align: center;
  font-size: clamp(2.4rem, 7vw, 6rem);
  font-weight: 900;
  line-height: 0.95;
  text-transform: uppercase;
  margin: 0 auto clamp(2rem, 4vw, 3.5rem) auto;
  padding: 0 1.25rem;
}

.marquee-container {
  display: flex;
  overflow: hidden;
  width: 100vw;
  user-select: none;
  pointer-events: none;
  position: relative;
  z-index: 1;
}

.marquee-track {
  display: flex;
  gap: 0.75rem;
  will-change: transform;
}

.marquee-tile {
  width: 420px;
  height: 270px;
  border-radius: 1rem; /* rounded-2xl */
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  background-color: #1a1a1a;
  border: 1px solid rgba(215, 226, 234, 0.05);
}

@media (max-width: 640px) {
  .marquee-tile {
    width: 280px;
    height: 180px;
  }
}

/* SECTION 3: ABOUT SECTION */
.about-section {
  min-height: 100vh;
  background-color: #0C0C0C;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 5rem 1.25rem;
  overflow: hidden;
  z-index: 5;
}

@media (min-width: 640px) {
  .about-section {
    padding: 5rem 2rem;
  }
}

@media (min-width: 768px) {
  .about-section {
    padding: 5rem 2.5rem;
  }
}

/* Section heading general style */
.section-heading-huge {
  font-weight: 900;
  text-transform: uppercase;
  leading-opacity: 0.85;
  letter-spacing: -0.02em;
  text-align: center;
  font-size: clamp(3rem, 12vw, 160px);
  z-index: 2;
  margin-bottom: 2.5rem;
}

@media (min-width: 640px) { .section-heading-huge { margin-bottom: 3.5rem; } }
@media (min-width: 768px) { .section-heading-huge { margin-bottom: 4rem; } }

/* About content wrapper */
.about-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4rem; /* gap between text block and button */
  max-width: 560px;
  z-index: 2;
}

@media (min-width: 640px) { .about-content { gap: 5rem; } }
@media (min-width: 768px) { .about-content { gap: 6rem; } }

/* Animated Paragraph Spans */
.about-paragraph {
  color: #D7E2EA;
  font-weight: 500;
  line-height: 1.6;
  text-align: center;
  font-size: clamp(1rem, 2vw, 1.35rem);
}

.about-paragraph .char {
  opacity: 0.2;
  will-change: opacity;
  display: inline-block;
  white-space: pre-wrap;
}

/* INTERSECTION OBSERVER FADE-IN */
.scroll-fade-in {
  opacity: 0;
  transform: translate(var(--x, 0px), var(--y, 30px));
  transition: opacity var(--duration, 0.7s) cubic-bezier(0.25, 0.1, 0.25, 1),
              transform var(--duration, 0.7s) cubic-bezier(0.25, 0.1, 0.25, 1);
  transition-delay: var(--delay, 0s);
  will-change: opacity, transform;
}

.scroll-fade-in.visible {
  opacity: 1;
  transform: translate(0, 0);
}

/* SECTION 4: SERVICES SECTION */
.services-section {
  background-color: #FFFFFF;
  color: #0C0C0C;
  border-top-left-radius: 40px;
  border-top-right-radius: 40px;
  padding: 5rem 1.25rem;
  position: relative;
  z-index: 8;
  overflow: hidden;
}

@media (min-width: 640px) {
  .services-section {
    border-top-left-radius: 50px;
    border-top-right-radius: 50px;
    padding: 6rem 2rem;
  }
}

@media (min-width: 768px) {
  .services-section {
    border-top-left-radius: 60px;
    border-top-right-radius: 60px;
    padding: 8rem 2.5rem;
  }
}

.services-heading {
  color: #0C0C0C;
}

.services-list {
  max-width: 1024px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}

.service-item {
  display: flex;
  align-items: center;
  border-top: 1px solid rgba(12, 12, 12, 0.15);
  padding: 2rem 0;
  transition: transform 0.3s cubic-bezier(0.25, 0.1, 0.25, 1),
              padding-left 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.service-item:last-child {
  border-bottom: 1px solid rgba(12, 12, 12, 0.15);
}

.service-item:hover {
  padding-left: 1.5rem;
  transform: translateX(5px);
}

.service-number {
  font-weight: 900;
  font-size: clamp(3rem, 10vw, 140px);
  color: #0C0C0C;
  line-height: 0.8;
  margin-right: 2rem;
  width: 30%;
  flex-shrink: 0;
}

@media (min-width: 768px) {
  .service-number {
    width: 25%;
    margin-right: 3rem;
  }
}

.service-content {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: 70%;
}

@media (min-width: 768px) {
  .service-content {
    width: 75%;
  }
}

.service-title {
  font-weight: 500;
  text-transform: uppercase;
  font-size: clamp(1rem, 2.2vw, 2.1rem);
  color: #0C0C0C;
  transition: color 0.3s ease;
}

.service-item:hover .service-title {
  color: #0A8F45;
}

.service-description {
  font-weight: 300;
  line-height: 1.5;
  max-width: 650px;
  font-size: clamp(0.85rem, 1.6vw, 1.25rem);
  opacity: 0.6;
  color: #0C0C0C;
}

/* SECTION 5: PROJECTS SECTION */
.projects-section {
  background-color: #0C0C0C;
  border-top-left-radius: 40px;
  border-top-right-radius: 40px;
  margin-top: -2.5rem;
  padding: 6rem 1.25rem 20vh 1.25rem;
  position: relative;
  z-index: 10;
}

@media (min-width: 640px) {
  .projects-section {
    border-top-left-radius: 50px;
    border-top-right-radius: 50px;
    margin-top: -3rem;
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

@media (min-width: 768px) {
  .projects-section {
    border-top-left-radius: 60px;
    border-top-right-radius: 60px;
    margin-top: -3.5rem;
    padding-left: 2.5rem;
    padding-right: 2.5rem;
  }
}

.projects-stack-container {
  max-width: 1200px;
  margin: 4rem auto 0 auto;
  position: relative;
  perspective: 1400px;
}

/* Sticky-stacking card layout */
.project-card-wrapper {
  position: relative;
  height: 85vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  will-change: transform, opacity;
  transform-origin: top center;
}

.project-card-wrapper:nth-child(1) {
  z-index: 1;
}

.project-card-wrapper:nth-child(2) {
  z-index: 2;
}

.project-card-wrapper:nth-child(3) {
  z-index: 3;
}

.project-card {
  position: sticky;
  top: calc(clamp(6rem, 15vh, 8rem) + var(--stack-offset, 0px));
  isolation: isolate;
  border-radius: 40px;
  border: 2px solid #D7E2EA;
  background-color: #0C0C0C;
  padding: 1.25rem;
  width: 100%;
  box-shadow: 0 -20px 40px rgba(0,0,0,0.8);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  height: 90%;
  min-height: clamp(24rem, 62vh, 38rem);
  overflow: hidden;
  will-change: transform, filter;
  transform-origin: center top;
}

.project-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(215, 226, 234, 0.05) 0%, rgba(6, 10, 12, 0.16) 26%, rgba(2, 4, 5, 0.5) 100%);
  opacity: var(--stack-overlay-opacity, 0);
  pointer-events: none;
  z-index: 0;
}

.project-card > * {
  position: relative;
  z-index: 1;
}

@media (min-width: 640px) {
  .project-card {
    border-radius: 50px;
    padding: 2rem;
    gap: 2rem;
  }
}

@media (min-width: 768px) {
  .project-card {
    border-radius: 60px;
    padding: 2.5rem;
  }
}

/* Card Top Row */
.card-top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.card-info-group {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .card-info-group {
    gap: 3rem;
  }
}

.card-number {
  font-weight: 900;
  font-size: clamp(2rem, 6vw, 5.5rem);
  color: #D7E2EA;
  line-height: 0.8;
}

.card-titles {
  display: flex;
  flex-direction: column;
}

.card-category {
  font-size: clamp(0.7rem, 1.2vw, 0.9rem);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.5;
  font-weight: 400;
}

.card-title {
  font-weight: 500;
  text-transform: uppercase;
  font-size: clamp(1rem, 2vw, 1.8rem);
  color: #D7E2EA;
}

/* Card Bottom Row (Method Text) */
.project-method-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 100%;
  min-height: 0;
  flex: 1;
}

.project-method-intro {
  max-width: 60rem;
  color: rgba(215, 226, 234, 0.78);
  font-size: clamp(0.98rem, 1.5vw, 1.2rem);
  line-height: 1.65;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(215, 226, 234, 0.12);
}

.project-method-body {
  max-width: 70rem;
  color: rgba(215, 226, 234, 0.64);
  line-height: 1.65;
  font-size: clamp(0.92rem, 1.22vw, 1.04rem);
}

@media (max-width: 767px) {
  .card-top-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }

  .card-info-group {
    align-items: flex-start;
  }

  .project-card {
    height: 90%;
    min-height: clamp(24rem, 70vh, 32rem);
  }
}