@import url("https://fonts.googleapis.com/css2?family=Nunito:ital,wght@0,200..1000;1,200..1000&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  text-decoration: none;
  border: none;
  outline: none;
  scroll-behavior: smooth;
  font-family: "Nunito", sans-serif;
}

:root {
  --bg-color: #191f36;
  --snd-bg-color: #262b40;
  --text-color: #ffffff;
  --muted-text-color: rgba(255, 255, 255, 0.72);
  --main-color: #59b2f4;

  /* 8px spacing scale (1rem = 10px) */
  --space-2: 0.8rem; /* 8px */
  --space-4: 1.6rem; /* 16px */
  --space-6: 2.4rem; /* 24px */
  --space-8: 3.2rem; /* 32px */
  --space-12: 4.8rem; /* 48px */
  --space-16: 6.4rem; /* 64px */
  --space-24: 9.6rem; /* 96px */

  --container-max-width: 1120px;
  --container-inline-padding: var(--space-6);

  --radius-sm: 0.8rem;
  --radius-md: 1.2rem;
  --radius-lg: 1.6rem;

  --shadow-soft: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-strong: 0 18px 40px rgba(0, 0, 0, 0.45);

  --transition-fast: all 0.2s ease;
  --transition-md: all 0.3s ease;
}

/* Performance optimizations */
section {
  content-visibility: auto;
  contain-intrinsic-size: auto 500px;
}

img {
  content-visibility: auto;
}

html {
  font-size: 62.5%;
  overflow-x: hidden;
}

body {
  background: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Firefox */
input[type="number"] {
  -moz-appearance: textfield;
  appearance: textfield;
}
section {
  min-height: 100vh;
  padding: var(--space-16) 0;
  display: flex;
  flex-direction: column;
  justify-content: center; /* vertically center content within viewport */
  /* Ensure anchor navigation doesn't hide content behind fixed header */
  scroll-margin-top: 9rem;
}

.container {
  max-width: var(--container-max-width);
  padding-inline: var(--container-inline-padding);
  margin-inline: auto;
  width: 100%;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(25, 31, 54, 0.92);
  backdrop-filter: blur(18px);
  border-bottom: 0.1rem solid transparent;
  z-index: 100;
  transition: background 0.2s ease, border-color 0.2s ease,
    box-shadow 0.2s ease, transform 0.2s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
}

.header.sticky {
  border-bottom-color: rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(20px);
}
.logo {
  font-size: 2.5rem;
  color: var(--text-color);
  font-weight: 700;
  cursor: default;
}

.navbar a {
  font-size: 1.5rem;
  color: var(--text-color);
  margin-left: var(--space-6);
  font-weight: 700;
}
.navbar a:hover,
.navbar a.active {
  color: var(--main-color);
}

#menu-icon {
  font-size: 3.6rem;
  color: var(--text-color);
  display: none;
}
.home {
  display: flex;
  align-items: center;
}

.home-layout {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2.4fr);
  align-items: center;
  gap: calc(var(--space-12) + 1rem); /* 10px extra gap between text and image */
}

.home-content h3 {
  font-size: 3.2rem;
  font-weight: 700;
}
.home-content h3:nth-of-type(2) {
  margin-bottom: var(--space-4);
}

span {
  color: var(--main-color);
}

.home-content h1 {
  font-size: 5.6rem;
  font-weight: 700;
  line-height: 1.2;
}

.home-content .home-handle {
  font-size: 1.4rem;
  color: var(--text-color);
  opacity: 0.85;
  margin: -0.4rem 0 var(--space-2);
  letter-spacing: 0.05em;
}

.home-content {
  max-width: 56rem;
}

.home-img {
  display: flex;
  justify-content: center;
  align-items: center;
}

.home-img img {
  max-width: 25vw;
  border-radius: 20rem;
  animation: floatImage 4s ease-in-out infinite;
  will-change: transform;
}

@keyframes floatImage {
  0% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-2.4rem);
  }
  100% {
    transform: translateY(0);
  }
}

.home-content p {
  font-size: 1.6rem;
  color: var(--muted-text-color);
}
.home-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-4) 0 var(--space-2);
  padding: 0;
  list-style: none;
}
.home-highlights li {
  font-size: 1.4rem;
  padding: 0.4rem 1.2rem;
  border-radius: 9999px;
  background: var(--snd-bg-color);
  border: 0.1rem solid var(--bg-color);
  letter-spacing: 0.2px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.home-highlights li:hover {
  transform: translateY(-2px);
  border-color: var(--main-color);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.25);
}
.home-cta {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-4);
}
.btn.btn-secondary {
  background: transparent;
  color: var(--text-color);
  box-shadow: none;
  border: 0.2rem solid var(--main-color);
}
.btn.btn-secondary:hover {
  background: var(--main-color);
  color: var(--snd-bg-color);
}
.social-media a {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 4rem;
  height: 4rem;
  background: transparent;
  border: 0.2rem solid var(--main-color);
  border-radius: 50%;
  font-size: 2rem;
  color: var(--main-color);
  margin: var(--space-4) var(--space-2) var(--space-4) 0;
  transition: var(--transition-fast);
}
.social-media a:hover {
  background-color: var(--main-color);
  color: var(--snd-bg-color);
  box-shadow: 0 0 1rem var(--main-color);
}
.btn {
  display: inline-block;
  padding: 1.2rem 3.2rem;
  background: var(--main-color);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
  font-size: 1.6rem;
  color: var(--bg-color);
  letter-spacing: 0.1rem;
  font-weight: 600;
  transition: var(--transition-fast);
  transform: translateY(0);
}
.btn:hover {
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.4);
  transform: translateY(-2px);
  filter: brightness(1.05);
}
.about {
  background: var(--snd-bg-color);
  /* Override global section vertical centering so image/content stay pinned
     in place when accordion panels open/close */
  justify-content: flex-start;
}

.about-layout {
  display: grid;
  grid-template-columns: minmax(0, 2.6fr) minmax(0, 3.4fr);
  align-items: flex-start; /* keep image anchored when accordion expands/collapses */
  gap: var(--space-12);
}
.about-img {
  display: flex;
  justify-content: center;
  align-items: center;
  padding-top: var(--space-24); /* extra top padding so image sits lower */
}
.about-img img {
  width: 100%;
  max-width: 44rem; /* slightly larger desktop size */
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}
.heading {
  text-align: center;
  font-size: 4.8rem;
  line-height: 1.2;
  letter-spacing: 0.03em;
  margin-bottom: var(--space-12);
}
.about-content h2 {
  text-align: left;
  line-height: 1.2;
}
.about-content h3 {
  font-size: 2.6rem;
}
.about-content p {
  font-size: 1.6rem;
  margin: var(--space-4) 0 var(--space-6);
}
/* About accordion */
.about-accordion {
  margin-top: var(--space-4);
}
.about-accordion details {
  background: var(--bg-color);
  border: 0.2rem solid var(--bg-color);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
  padding: var(--space-2) var(--space-4);
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
  transform-style: preserve-3d;
}
.about-accordion details:hover {
  border-color: var(--main-color);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.25);
  transform: translateY(-3px);
}
.about-accordion summary {
  cursor: pointer;
  list-style: none;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-color);
  position: relative;
  display: flex;
  align-items: center;
  min-height: 4.4rem; /* improved tap target */
  padding-right: 2.4rem; /* spacing for caret */
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}
.about-accordion summary::marker {
  display: none;
}
.about-accordion summary::after {
  content: "\f107";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  right: 0.4rem;
  top: 0.1rem;
  transition: transform 0.3s ease;
}
.about-accordion summary:focus-visible {
  outline: 0.2rem solid var(--main-color);
  outline-offset: 0.2rem;
  border-radius: 0.6rem;
}
.about-accordion details[open] summary::after {
  transform: rotate(180deg);
}
.about-panel {
  margin-top: 0.8rem;
  font-size: 1.6rem;
  color: var(--text-color);
}
.about-list {
  padding-left: 1.6rem;
}
.about-list li {
  margin: 0.6rem 0;
}
.about-cta {
  display: flex;
  gap: 1rem;
  margin-top: 1.2rem;
}
.btn.btn-secondary {
  background: transparent;
  color: var(--text-color);
  box-shadow: none;
  border: 0.2rem solid var(--main-color);
}
.btn.btn-secondary:hover {
  background: var(--main-color);
  color: var(--snd-bg-color);
}
.services h2 {
  margin-bottom: var(--space-12);
}
.services-container {
  display: flex;
  justify-content: center;
  align-items: stretch;
  flex-wrap: wrap;
  gap: var(--space-6);
}
.services-container .services-box {
  flex: 1 1 30rem;
  background: var(--snd-bg-color);
  padding: var(--space-8) var(--space-6);
  border-radius: var(--radius-lg);
  text-align: center;
  border: 0.2rem solid var(--bg-color);
  transition: var(--transition-md);
  display: flex;
  flex-direction: column;
  min-height: 38rem;
}

/* 3D hover effect for service cards */
.services-container {
  perspective: 1000px;
  perspective-origin: 50% 50%;
}
.services-container .services-box {
  position: relative;
  transform-style: preserve-3d;
  will-change: transform;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.25);
  transform: rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg))
    translateZ(var(--tz, 0px));
}
.services-container .services-box::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    ellipse at var(--gx, 20%) var(--gy, -20%),
    rgba(255, 255, 255, 0.18),
    transparent 40%
  );
  transform: translateZ(30px);
  pointer-events: none;
}
.services-container .services-box:hover {
  border-color: var(--main-color);
  transform: translateY(-6px) rotateX(calc(var(--rx, 6deg)))
    rotateY(calc(var(--ry, -6deg))) translateZ(10px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35), 0 0 24px rgba(89, 178, 244, 0.2);
}
.services-container .services-box.is-tilting {
  transition: transform 120ms ease-out, box-shadow 200ms ease,
    border-color 200ms ease;
}
.services-box > i,
.services-box > h3,
.services-box > p,
.services-box > .btn {
  transform: translateZ(18px);
  transition: transform 0.4s ease;
}
.services-container .services-box:hover > i,
.services-container .services-box:hover > h3,
.services-container .services-box:hover > p,
.services-container .services-box:hover > .btn {
  transform: translateZ(28px);
}
.services-box i {
  font-size: 7rem;
  color: var(--main-color);
}
.services-box h3 {
  font-size: 2.6rem;
}
.services-box p {
  font-size: 1.6rem;
  margin: var(--space-2) 0 var(--space-6);
}
.services-box img {
  width: 100%;
  height: 12rem;
  object-fit: contain;
  display: block;
  margin: 0 auto 1.5rem;
  filter: none;
}
.services-box .btn {
  margin-top: auto;
  position: relative;
  transform-style: preserve-3d;
  will-change: transform, box-shadow;
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.25);
}
.services-box .btn::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    ellipse at var(--gx, 20%) var(--gy, -20%),
    rgba(255, 255, 255, 0.22),
    transparent 45%
  );
  transform: translateZ(36px);
  pointer-events: none;
}
/* Sync button depth and slight tilt with the card */
.services-container .services-box > .btn {
  transform: translateZ(22px) rotateX(calc(var(--rx, 0deg) * 0.35))
    rotateY(calc(var(--ry, 0deg) * 0.35));
}
.services-container .services-box:hover > .btn {
  transform: translateZ(40px) rotateX(calc(var(--rx, 0deg) * 0.35))
    rotateY(calc(var(--ry, 0deg) * 0.35));
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.35), 0 0 18px rgba(89, 178, 244, 0.25);
}
.portfolio {
  background: var(--snd-bg-color);
}
.portfolio h2 {
  margin-bottom: var(--space-12);
}
.portfolio-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: center;
  gap: var(--space-6);
}
.portfolio-container .portfolio-box {
  position: relative;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  display: flex;
}
.portfolio-box img {
  height: 32rem;
  width: 100%;
  transition: transform 0.4s ease, opacity 0.3s ease;
  opacity: 0.7;
  will-change: transform;
}
.portfolio-box:hover img {
  transform: scale(1.1);
}
.portfolio-box .portfolio-layer {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(rgba(0, 0, 0, 0.1), var(--main-color));
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  text-align: center;
  padding: 0 var(--space-8);
  transform: translateY(100%);
  transition: 0.5s ease;
  will-change: transform;
}
.portfolio-box:hover .portfolio-layer {
  transform: translateY(0);
}
.portfolio-layer h4 {
  font-size: 3rem;
}
.portfolio-layer p {
  font-size: 1.6rem;
  margin: 0.3rem 0 1rem;
}
.portfolio-layer a {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 5rem;
  height: 5rem;
  background: var(--text-color);
  border-radius: 50%;
}
.portfolio-layer a i {
  font-size: 2rem;
  color: var(--snd-bg-color);
}
.contact h2 {
  margin-bottom: 3rem;
}
.contact form {
  max-width: 70rem;
  margin: 1rem auto;
  text-align: center;
  margin-bottom: 3rem;
}
.contact form .input-box {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}
.contact form .input-box input,
.contact form textarea {
  width: 100%;
  padding: 1.5rem;
  font-size: 1.6rem;
  color: var(--text-color);
  background: var(--snd-bg-color);
  border-radius: 0.8rem;
  margin: 0.7rem 0;
}
.contact form .input-box input {
  width: 49%;
}
.contact form textarea {
  resize: none;
}
.contact form .btn {
  margin-top: 2rem;
  cursor: pointer;
}
.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  padding: 2rem 9%;
  background: var(--snd-bg-color);
}
.footer-text {
  font-size: 1.6rem;
}
.footer-iconTop {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 0.8rem 1rem;
  background: var(--main-color);
  border-radius: 0.8rem;
  transition: 0.5s ease;
}
.footer-iconTop a:hover {
  box-shadow: 0 0 1rem var(--main-color);
}
.footer-iconTop a i {
  font-size: 2.4rem;
  color: var(--snd-bg-color);
}

@media (max-width: 1200px) {
  html {
    font-size: 55%;
  }
}
@media (max-width: 991px) {
  .container {
    padding-inline: var(--space-4);
  }
  section {
    padding: var(--space-12) 0 var(--space-6);
  }
  .contact {
    min-height: auto;
  }
  .footer {
    padding: var(--space-4) var(--space-4);
  }
}
@media (max-width: 768px) {
  section {
    min-height: auto; /* avoid large empty bottom space on smaller screens */
  }
  #menu-icon {
    display: block;
  }
  .navbar {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    padding: 1rem 3%;
    background: var(--bg-color);
    border-top: 0.1rem solid rgba(0, 0, 0, 0.2);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.2);
    display: none;
  }
  .navbar.active {
    display: block;
  }
  .navbar a {
    display: block;
    font-size: 2rem;
    margin: 3rem 0;
  }
  .home-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-8);
  }
  .home-content {
    order: 2;
  }
  .home-content h3 {
    font-size: 2.6rem;
  }
  .home-content h1 {
    font-size: 5rem;
  }
  .home-img img {
    width: 90vw;
    max-width: 90vw; /* override desktop max-width so image can grow */
    height: auto;
    margin-top: 4rem;
  }
  .about-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-8);
  }
  .about-img {
    padding-top: var(--space-6); /* lighter top padding on smaller screens */
  }
  .about-img img {
    width: 70vw;
    max-width: 28rem;
    margin: 0 auto var(--space-4);
  }
  .services h2 {
    margin-bottom: 3rem;
  }
  .portfolio h2 {
    margin-bottom: 3rem;
  }
  .portfolio-container {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 617px) {
  .portfolio-container {
    grid-template-columns: 1fr;
  }
  .home-img img {
    width:68vw;
    max-width: 70vw; /* ensure no 25vw cap applies on very small screens */
    height: auto;
    margin-top: 6rem;
  }
}
@media (max-width: 450px) {
  html {
    font-size: 50%;
  }
  .contact form .input-box input {
    width: 100%;
  }
}