@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600&display=swap");

/* ================== VARIABLES ================== */
:root {
  --header-height: 3rem;

  /* ======== Colors ======== */
  --hue-color: 250; /* Purple: 250, Green: 142, Blue: 230 */
  --first-color: hsl(var(--hue-color), 69%, 61%);
  --first-color-second: hsl(var(--hue-color), 69%, 61%);
  --first-color-alt: hsl(var(--hue-color), 57%, 53%);
  --first-color-lighter: hsl(var(--hue-color), 92%, 85%);
  --title-color: hsl(var(--hue-color), 8%, 15%);
  --text-color: hsl(var(--hue-color), 8%, 45%);
  --text-color-light: hsl(var(--hue-color), 8%, 65%);
  --input-color: hsl(var(--hue-color), 70%, 96%);
  --body-color: hsl(var(--hue-color), 60%, 99%);
  --container-color: #fff;
  --scroll-bar-color: hsl(var(--hue-color), 12%, 90%);
  --scroll-thumb-color: hsl(var(--hue-color), 12%, 80%);

  /* ======== Font and typography ======== */
  --body-font: "Poppins", sans-serif;
  --big-font-size: 2rem;
  --h1-font-size: 1.5rem;
  --h2-font-size: 1.25rem;
  --h3-font-size: 1.125rem;
  --normal-font-size: 0.938rem;
  --small-font-size: 0.813rem;
  --smaller-font-size: 0.75rem;

  /* ======== Font weight ======== */
  --font-medium: 500;
  --font-semi-bold: 600;

  /* ======== Margins Bottom ======== */
  --mb-0-25: 0.25rem;
  --mb-0-5: 0.5rem;
  --mb-0-75: 0.75rem;
  --mb-1: 1rem;
  --mb-1-5: 1.5rem;
  --mb-2: 2rem;
  --mb-2-5: 2.5rem;
  --mb-3: 3rem;

  /* ======== z-index ======== */
  --z-tooltip: 10;
  --z-fixed: 100;
  --z-modal: 1000;
  
  /* ======== New Variables for Polish ======== */
  --border-radius: 0.75rem;
  --card-shadow: 0 4px 25px hsla(var(--hue-color), 30%, 8%, 0.1);
  --transition-speed: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); /* A more dynamic transition */
}

/* Responsive typography */
@media screen and (min-width: 968px) {
  :root {
    --big-font-size: 3rem;
    --h1-font-size: 2.25rem;
    --h2-font-size: 1.5rem;
    --h3-font-size: 1.25rem;
    --normal-font-size: 1rem;
    --small-font-size: 0.875rem;
    --smaller-font-size: 0.813rem;
  }
}

/* ================== DARK THEME ================== */
body.dark-theme {
  --first-color-second: hsl(var(--hue-color), 30%, 8%);
  --title-color: hsl(var(--hue-color), 8%, 95%);
  --text-color: hsl(var(--hue-color), 8%, 75%);
  --input-color: hsl(var(--hue-color), 29%, 16%);
  --body-color: hsl(var(--hue-color), 28%, 12%);
  --container-color: hsl(var(--hue-color), 29%, 16%);
  --scroll-bar-color: hsl(var(--hue-color), 12%, 48%);
  --scroll-thumb-color: hsl(var(--hue-color), 12%, 36%);
  --card-shadow: 0 4px 25px hsla(var(--hue-color), 30%, 8%, 0.2);
}

/* ================== BASE ================== */
* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0 0 var(--header-height) 0;
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
  background-color: var(--body-color);
  color: var(--text-color);
  transition: background-color 0.4s;
}
body.dark-theme {
  background: #0F0C29;
  background: -webkit-linear-gradient(to right, #24243e, #302b63, #0F0C29);
  background: linear-gradient(to right, #24243e, #302b63, #0F0C29);
}
h1, h2, h3, h4 {
  color: var(--title-color);
  font-weight: var(--font-semi-bold);
}
ul {
  list-style: none;
}
a {
  text-decoration: none;
}
img {
  max-width: 100%;
  height: auto;
}

/* ================== REUSABLE CSS ================== */
.section {
  padding: 2rem 0 4rem;
}
.section-title {
  font-size: var(--h1-font-size);
}
.section-subtitle {
  display: block;
  font-size: var(--small-font-size);
  margin-bottom: var(--mb-3);
}
.section-title,
.section-subtitle {
  text-align: center;
}

/* ================== LAYOUT ================== */
.container {
  max-width: 768px;
  margin-left: var(--mb-1-5);
  margin-right: var(--mb-1-5);
}
.grid {
  display: grid;
  gap: 1.5rem;
}
.header {
  width: 100%;
  position: fixed;
  bottom: 0;
  left: 0;
  z-index: var(--z-fixed);
  background-color: var(--body-color);
  transition: background-color 0.4s;
}
.scroll-header {
  box-shadow: 0 -1px 12px hsla(var(--hue-color), 69%, 61%, 0.15);
}

/* ================== NAV ================== */
.nav {
  max-width: 968px;
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav-logo, .nav-toggle {
  color: var(--title-color);
  font-weight: var(--font-medium);
  transition: color 0.3s;
}
.nav-logo:hover, .nav-toggle:hover {
  color: var(--first-color);
}
.nav-toggle {
  font-size: 1.1rem;
  cursor: pointer;
}
@media screen and (max-width: 767px) {
  .nav-menu {
    position: fixed;
    bottom: -100%;
    left: 0;
    width: 100%;
    background-color: var(--body-color);
    padding: 2rem 1.5rem 4rem;
    box-shadow: 0 -1px 4px rgba(0, 0, 0, 0.15);
    border-radius: 1.5rem 1.5rem 0 0;
    transition: 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
  }
}
.nav-list {
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

/* --- DYNAMIC NAV LINK --- */
.nav-link, .footer-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: var(--small-font-size);
  color: var(--title-color);
  font-weight: var(--font-medium);
  transition: color 0.3s;
  position: relative; /* For the animated underline */
}
.footer-link{
    color: #fff;
}
.nav-link::after, .footer-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 70%;
  height: 2px;
  background-color: var(--first-color);
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transform-origin: center;
}
.nav-link:hover::after, .footer-link:hover::after, .active-link::after {
  transform: translateX(-50%) scaleX(1);
}
.nav-link:hover, .footer-link:hover, .active-link {
  color: var(--first-color);
}
.footer-link:hover{
    color: var(--first-color-lighter);
}
.nav-icon {
  font-size: 1.2rem;
}
.nav-close {
  position: absolute;
  right: 1.3rem;
  bottom: 0.5rem;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--first-color);
}
.nav-close:hover {
  color: var(--first-color-alt);
}
.show-menu {
  bottom: 0;
}

/* ================== THEME ================== */
.nav-btns {
  display: flex;
  align-items: center;
}
.change-theme {
  font-size: 1.25rem;
  color: var(--title-color);
  margin-right: var(--mb-1);
  cursor: pointer;
  transition: color 0.3s, transform 0.3s;
}
.change-theme:hover {
  color: var(--first-color);
  transform: scale(1.2);
}

/* ================== HOME ================== */
.home-container {
  gap: 1rem;
}
.home-content {
  grid-template-columns: 0.5fr 3fr;
  padding-top: 3.5rem;
  align-items: center;
}
.home-social {
  display: grid;
  grid-template-columns: max-content;
  row-gap: 1rem;
}
.home-social-icon {
  font-size: 1.25rem;
  color: var(--first-color);
  transition: var(--transition-speed);
}
.home-social-icon:hover {
  color: var(--first-color-alt);
  transform: translateY(-3px) scale(1.1);
}
.home-blob {
  width: 200px;
  fill: var(--first-color);
}
.home-blob-img {
  width: 240px;
}
.home-data {
  grid-column: 1/3;
}
.home-title {
  font-size: var(--big-font-size);
}
.home-subtitle {
  font-size: var(--h3-font-size);
  color: var(--text-color);
  font-weight: var(--font-medium);
  margin-bottom: var(--mb-0-75);
}
.home-description {
  margin-bottom: var(--mb-2);
}
.home-scroll {
  display: none;
}
.home-scroll-button {
  color: var(--first-color);
  transition: transform 0.3s;
}
.home-scroll-button:hover {
  transform: translateY(0.25rem);
}
.home-scroll-mouse {
  font-size: 2rem;
}
.home-scroll-name {
  font-size: var(--small-font-size);
  color: var(--title-color);
  font-weight: var(--font-medium);
  margin-right: var(--mb-0-25);
}
.home-scroll-arrow {
  font-size: 1.25rem;
}

/* --- DYNAMIC BUTTONS --- */
.button {
  display: inline-block;
  background: linear-gradient(45deg, var(--first-color-alt), var(--first-color));
  color: #fff;
  padding: 1.1rem 2rem;
  border-radius: 0.5rem;
  font-weight: var(--font-medium);
  transition: var(--transition-speed);
  box-shadow: 0 4px 15px hsla(var(--hue-color), 69%, 61%, 0.4);
  border: none;
}
.button:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px hsla(var(--hue-color), 69%, 61%, 0.5);
  background-size: 150% 150%;
}
.button-icon {
  font-size: 1.25rem;
  margin-left: var(--mb-0-5);
  transition: transform 0.3s;
}
.button-flex {
  display: inline-flex;
  align-items: center;
}

/* ================== ABOUT ================== */
.about-img {
  width: 200px;
  border-radius: var(--border-radius);
  justify-self: center;
  align-self: center;
}
.about-description {
  text-align: center;
  margin-bottom: var(--mb-2-5);
}
.about-buttons {
  display: flex;
  justify-content: center;
}

/* --- DYNAMIC SKILLS --- */
.skills-container {
  justify-content: center;
}
.skills-content {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.skills-name {
  padding: 0.75rem 1.25rem;
  font-size: var(--small-font-size);
  background: var(--container-color);
  border-radius: var(--border-radius);
  font-weight: var(--font-medium);
  color: var(--title-color);
  transition: var(--transition-speed);
  box-shadow: var(--card-shadow);
  border: 1px solid var(--input-color);
}
.skills-name:hover {
  background-color: var(--first-color);
  color: #fff;
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 6px 15px hsla(var(--hue-color), 30%, 8%, 0.2);
}

/* --- DYNAMIC QUALIFICATION --- */
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 hsla(var(--hue-color), 92%, 85%, 0.7); }
  70% { box-shadow: 0 0 0 10px hsla(var(--hue-color), 92%, 85%, 0); }
  100% { box-shadow: 0 0 0 0 hsla(var(--hue-color), 92%, 85%, 0); }
}
.qualification-tabs {
  display: flex;
  justify-content: space-evenly;
  margin-bottom: var(--mb-2);
}
.qualification-button {
  font-size: var(--h3-font-size);
  font-weight: var(--font-medium);
  cursor: pointer;
  transition: color 0.3s;
}
.qualification-button:hover {
  color: var(--first-color);
}
.qualification-icon {
  font-size: 1.8rem;
  margin-right: var(--mb-0-25);
}
.qualification-data {
  display: grid;
  grid-template-columns: 1fr max-content 1fr;
  column-gap: 1.5rem;
}
.qualification-title {
  font-size: var(--normal-font-size);
  font-weight: var(--font-medium);
}
.qualification-subtitle {
  display: inline-block;
  font-size: var(--small-font-size);
  margin-bottom: var(--mb-1);
}
.qualification-calendar {
  font-size: var(--smaller-font-size);
  color: var(--text-color-light);
}
.qualification-rounder {
  display: inline-block;
  width: 13px;
  height: 13px;
  background-color: var(--first-color);
  border-radius: 50%;
  animation: pulse 2s infinite; /* Pulsing animation */
}
.qualification-line {
  display: block;
  width: 2px; /* Thicker line */
  height: 100%;
  background-color: var(--first-color);
  transform: translate(5.5px, -7px);
}
.qualification [data-content] {
  display: none;
}
.qualification-active[data-content] {
  display: block;
}
.qualification-button.qualification-active {
  color: var(--first-color);
}


/* --- DYNAMIC SERVICES (CERTIFICATIONS) --- */
.services-container {
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.services-content {
    background-color: var(--container-color);
    box-shadow: var(--card-shadow);
    padding: 2.5rem 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition-speed);
    text-align: center;
    border: 1px solid var(--input-color);
    display: flex;
    flex-direction: column;
    align-items: center;
}
.services-content:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px hsla(var(--hue-color), 30%, 8%, 0.2), 0 0 15px hsla(var(--hue-color), 69%, 61%, 0.5); /* Lift and Glow effect */
}
.services-title {
    font-size: var(--h3-font-size);
    font-weight: var(--font-medium);
    margin-bottom: var(--mb-1);
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}
.certification-icon {
    height: 70px;
    max-width: 150px;
    width: auto;
    object-fit: contain;
    margin-bottom: var(--mb-1);
}
.button--link {
    display: inline-flex;
    align-items: center;
    color: var(--first-color);
    font-weight: var(--font-medium);
    transition: letter-spacing 0.3s;
}
.button--link:hover {
    letter-spacing: 0.5px; /* Subtle text expand on hover */
}
.button--link .button-icon {
    transition: transform .3s ease;
}
.button--link:hover .button-icon {
    transform: translateX(.25rem);
}

/* ================== PROJECTS ================== */
.portfolio-container {
  overflow: initial;
}
.portfolio-content {
  padding: 0 1.5rem;
  background: var(--container-color);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--card-shadow);
  transition: var(--transition-speed);
}
.portfolio-content:hover{
    transform: translateY(-5px);
    box-shadow: 0 10px 25px hsla(var(--hue-color), 30%, 8%, 0.15);
}
.portfolio-img {
  width: 265px;
  border-radius: var(--border-radius);
  justify-self: center;
  margin-bottom: var(--mb-1);
}
.portfolio-title {
  font-size: var(--h3-font-size);
  margin-bottom: var(--mb-0-5);
}
.portfolio-description {
  margin-bottom: var(--mb-0-75);
}
.swiper-button-prev::after, .swiper-button-next::after {
  content: "";
}
.swiper-portfolio-icon {
  font-size: 2rem;
  color: var(--first-color);
}
.swiper-button-prev {
  left: -0.5rem;
}
.swiper-button-next {
  right: -0.5rem;
}
.swiper-container-horizontal > .swiper-pagination-bullets {
  bottom: -2.5rem;
}
.swiper-pagination-bullet-active {
  background-color: var(--first-color);
}
.swiper-button-prev, .swiper-button-next, .swiper-pagination-bullet {
  outline: none;
}

/* ================== CONTACT ME ================== */
.contact-container {
  row-gap: 3rem;
}
.contact-info {
  display: flex;
  margin-bottom: var(--mb-2);
}
.contact-icon {
  font-size: 2rem;
  color: var(--first-color);
  margin-right: var(--mb-0-75);
}
.contact-title {
  font-size: var(--h3-font-size);
  font-weight: var(--font-medium);
}
.contact-subtitle {
  font-size: var(--small-font-size);
  color: var(--text-color-light);
}

/* ================== FOOTER ================== */
.footer {
  padding-top: 2rem;
}
.footer-bg {
  background-color: var(--first-color-second);
  padding: 2rem 0 3rem;
}
.footer-container {
  row-gap: 3.5rem;
}
.footer-title {
  font-size: var(--h1-font-size);
  margin-bottom: var(--mb-0-25);
}
.footer-subtitle {
  font-size: var(--small-font-size);
}
.footer-links {
  display: flex;
  flex-direction: column;
  row-gap: 1.5rem;
}
.footer-social {
  font-size: 1.25rem;
  margin-right: var(--mb-1-5);
  transition: transform 0.3s;
}
.footer-social:hover {
  color: var(--first-color-lighter);
  transform: translateY(-2px) scale(1.1);
}
.footer-copy {
  font-size: var(--smaller-font-size);
  text-align: center;
  color: var(--text-color-light);
  margin-top: var(--mb-3);
}
.footer-title, .footer-subtitle, .footer-link, .footer-social {
  color: #fff;
}

/* ================== SCROLL UP ================== */
.scrollup {
  position: fixed;
  right: 1rem;
  bottom: -20%;
  background-color: var(--first-color);
  opacity: 0.8;
  padding: 0.3rem 0.5rem;
  border-radius: 0.4rem;
  z-index: var(--z-tooltip);
  transition: 0.4s;
}
.scrollup:hover {
  background-color: var(--first-color-alt);
  transform: translateY(-3px);
}
.scrollup-icon {
  font-size: 1.5rem;
  color: #fff;
}
.show-scroll {
  bottom: 5rem;
}

/* ================== SCROLL BAR ================== */
::-webkit-scrollbar {
  width: 0.6rem;
  background-color: var(--scroll-bar-color);
  border-radius: 0.5rem;
}
::-webkit-scrollbar-thumb {
  background-color: var(--scroll-thumb-color);
  border-radius: 0.5rem;
  border: 2px solid var(--scroll-bar-color);
}
::-webkit-scrollbar-thumb:hover {
  background-color: var(--text-color-light);
}

/* ================== MEDIA QUERIES ================== */
/* For small devices */
@media screen and (max-width: 350px) {
  .container {
    margin-left: var(--mb-1);
    margin-right: var(--mb-1);
  }
  .nav-menu {
    padding: 2rem 0.25rem 4rem;
  }
  .nav-list {
    column-gap: 0;
  }
  .home-content {
    grid-template-columns: 0.25fr 3fr;
  }
  .home-blob {
    width: 180px;
  }
  .skills-name {
    font-size: var(--small-font-size);
    padding: .5rem 1rem;
  }
  .qualification-data {
    gap: 0.5rem;
  }
   .services-container{
    grid-template-columns: 1fr;
  }
  .project-img{
    width: 200px;
  }
}

/* For medium devices */
@media screen and (min-width: 568px) {
  .home-content {
    grid-template-columns: max-content 1fr 1fr;
  }
  .home-data {
    grid-column: initial;
  }
  .home-img {
    order: 1;
    justify-self: center;
  }
  .about-container,
  .portfolio-content,
  .contact-container,
  .footer-container {
    grid-template-columns: repeat(2, 1fr);
  }
  .qualification-sections {
    display: grid;
    grid-template-columns: 0.6fr;
    justify-content: center;
  }
}

@media screen and (min-width: 768px) {
  .container {
    margin-left: auto;
    margin-right: auto;
  }
  body {
    margin: 0;
  }
  .section {
    padding: 6rem 0 2rem;
  }
  .section-subtitle {
    margin-bottom: 4rem;
  }
  .header {
    top: 0;
    bottom: initial;
  }
  .header, .main, .footer-container {
    padding: 0 1rem;
  }
  .nav {
    height: calc(var(--header-height) + 1.5rem);
    column-gap: 1rem;
  }
  .nav-icon, .nav-close, .nav-toggle {
    display: none;
  }
  .nav-list {
    display: flex;
    column-gap: 2rem;
  }
  .nav-menu {
    margin-left: auto;
  }
  .change-theme {
    margin: 0;
  }
  .home-container {
    row-gap: 5rem;
  }
  .home-content {
    padding-top: 5.5rem;
    column-gap: 2rem;
  }
  .home-blob {
    width: 270px;
  }
  .home-scroll {
    display: block;
  }
  .home-scroll-button {
    margin-left: 3rem;
  }
  .about-container {
    column-gap: 5rem;
  }
  .about-img {
    width: 350px;
  }
  .about-description {
    text-align: initial;
  }
  .about-buttons {
    justify-content: initial;
  }
  .qualification-tabs {
    justify-content: center;
  }
  .qualification-button {
    margin: 0 var(--mb-1);
  }
  .qualification-sections {
    grid-template-columns: 0.5fr;
  }
  .services-container {
    grid-template-columns: repeat(3, 1fr);
  }
  .portfolio-img {
    width: 320px;
  }
  .portfolio-content {
    align-items: center;
  }
  .project{
      text-align: left;
  }
  .project-bg{
      background: none;
  }
  .project-container{
      background-color: var(--first-color-second);
      border-radius: 1rem;
      padding: 3rem 2.5rem 0;
      grid-template-columns: 1fr max-content;
      column-gap: 3rem;
  }
  .project-data{
      padding-top: .8rem;
  }
  .footer-container {
    grid-template-columns: repeat(3, 1fr);
  }
  .footer-bg {
    padding: 3rem 0 3.5rem;
  }
  .footer-links {
    flex-direction: row;
    column-gap: 2rem;
  }
  .footer-socials {
    justify-self: flex-end;
  }
  .footer-copy {
    margin-top: 4.5rem;
  }
}

/* For large devices */
@media screen and (min-width: 1024px) {
  .header, .main, .footer-container {
    padding: 0;
  }
  .home-blob {
    width: 320px;
  }
  .home-social {
    transform: translateX(-6rem);
  }
  .portfolio-content {
    column-gap: 5rem;
  }
  .swiper-portfolio-icon {
    font-size: 3.5rem;
  }
  .swiper-button-prev {
    left: -3.5rem;
  }
  .swiper-button-next {
    right: -3.5rem;
  }
  .swiper-container-horizontal > .swiper-pagination-bullets {
    bottom: -4.5rem;
  }
}