/*===== GOOGLE FONTS =====*/
@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&display=swap");

/*===== VARIABLES CSS =====*/
:root {
  --header-height: 3rem;
  --font-semi: 600;
  /*===== Colors =====*/
  --first-color: #4070F4;
  --second-color: #0E2431;
  --third-color: #6c757d;
  --bg-color: #fff;
  --text-color: #0E2431;
  --input-color: #f0f0f0;
  --container-color: #fff;
  --scroll-bar-color: #c5cadf;
  --scroll-thumb-color: #70a5fd;
  /*===== Font and typography =====*/
  --body-font: 'Poppins', sans-serif;
  --big-font-size: 2rem;
  --h2-font-size: 1.25rem;
  --normal-font-size: 0.938rem;
  --small-font-size: 0.813rem;
  /*===== Margins =====*/
  --mb-1: 0.5rem;
  --mb-2: 1rem;
  --mb-3: 1.5rem;
  --mb-4: 2rem;
  --mb-5: 2.5rem;
  --mb-6: 3rem;
  /*===== z index =====*/
  --z-back: -10;
  --z-normal: 1;
  --z-tooltip: 10;
  --z-fixed: 100;
}

/* Dark theme variables */
[data-theme="dark"] {
  --first-color: #70a5fd;
  --second-color: #f5f5f5;
  --third-color: #a0a0a0;
  --bg-color: #121212;
  --text-color: #e0e0e0;
  --input-color: #2a2a2a;
  --container-color: #1e1e1e;
  --scroll-bar-color: #4a4a4a;
  --scroll-thumb-color: #70a5fd;
}

@media screen and (min-width: 968px) {
  :root {
    --big-font-size: 3.5rem;
    --h2-font-size: 2rem;
    --normal-font-size: 1rem;
    --small-font-size: 0.875rem;
  }
}

/*===== BASE =====*/
*, ::before, ::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: var(--header-height) 0 0 0;
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
  color: var(--text-color);
  background-color: var(--bg-color);
  transition: background-color 0.3s, color 0.3s;
}

h1, h2, p {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  text-decoration: none;
}

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

/*===== CLASS CSS ===== */
.section-title {
  position: relative;
  font-size: var(--h2-font-size);
  color: var(--first-color);
  margin-top: var(--mb-2);
  margin-bottom: var(--mb-4);
  text-align: center;
}

.section-title::after {
  position: absolute;
  content: '';
  width: 64px;
  height: 0.18rem;
  left: 0;
  right: 0;
  margin: auto;
  top: 2rem;
  background-color: var(--first-color);
}

.section-subtitle {
  font-size: 1.5rem;
  color: var(--first-color);
  text-align: center;
  margin-top: var(--mb-4);
  margin-bottom: var(--mb-3);
}

.section {
  padding-top: 3rem;
  padding-bottom: 2rem;
}

/*===== LAYOUT =====*/
.bd-grid {
  max-width: 1024px;
  display: grid;
  margin-left: var(--mb-2);
  margin-right: var(--mb-2);
}

.l-header {
  width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  z-index: var(--z-fixed);
  background-color: var(--bg-color);
  box-shadow: 0 1px 4px rgba(146, 161, 176, 0.15);
  transition: background-color 0.3s;
}

/*===== NAV =====*/
.nav {
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: var(--font-semi);
}

@media screen and (max-width: 767px) {
  .nav__menu {
    position: fixed;
    top: var(--header-height);
    right: -100%;
    width: 80%;
    height: 100%;
    padding: 2rem;
    background-color: var(--container-color);
    transition: .5s;
    z-index: var(--z-fixed);
  }

  .nav__toggle, .theme-toggle {
    position: absolute;
    top: 1rem;
  }

  .nav__toggle {
    right: 1rem;
  }

  .theme-toggle {
    right: 3.5rem;
  }
}

.nav__item {
  margin-bottom: var(--mb-4);
}

.nav__link {
  position: relative;
  color: var(--text-color);
}

.nav__link:hover {
  position: relative;
}

.nav__link:hover::after {
  position: absolute;
  content: '';
  width: 100%;
  height: 0.18rem;
  left: 0;
  top: 2rem;
  background-color: var(--first-color);
}

.nav__logo {
  color: var(--text-color);
}

.nav__toggle {
  color: var(--text-color);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Theme toggle */
.theme-toggle {
  color: var(--text-color);
  font-size: 1.2rem;
  cursor: pointer;
  margin-left: var(--mb-2);
}

/*Active menu*/
.active::after {
  position: absolute;
  content: '';
  width: 100%;
  height: 0.18rem;
  left: 0;
  top: 2rem;
  background-color: var(--first-color);
}

/*=== Show menu ===*/
.show {
  right: 0;
}

/*===== HOME =====*/
.home {
  position: relative;
  row-gap: 5rem;
  padding: 4rem 0 5rem;
}

.home__data {
  align-self: center;
}

.home__title {
  font-size: var(--big-font-size);
  margin-bottom: var(--mb-5);
}

.home__title-color {
  color: var(--first-color);
}

.home__subtitle {
  font-size: 1.25rem;
  color: var(--third-color);
  font-weight: 400;
  margin-top: var(--mb-1);
  display: inline-block;
}

.home__social {
  display: flex;
  flex-direction: column;
}

.home__social-icon {
  width: max-content;
  margin-bottom: var(--mb-2);
  font-size: 1.5rem;
  color: var(--text-color);
}

.home__social-icon:hover {
  color: var(--first-color);
}

.home__img {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 260px;
}

.home__blob {
  fill: var(--first-color);
}

.home__blob-img {
  width: 360px;
}

/* Binary Animation Container */
.binary-animation-container {
  position: relative;
  width: 260px;
  height: 260px;
  overflow: hidden;
  border-radius: 50%;
  background-color: rgba(64, 112, 244, 0.1);
  display: flex;
  justify-content: center;
  align-items: center;
}

.binary-animation {
  position: absolute;
  width: 100%;
  height: 100%;
  font-family: monospace;
  font-size: 14px;
  color: var(--first-color);
  overflow: hidden;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  animation: fadeInOut 2s infinite;
}

@keyframes fadeInOut {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/*BUTTONS*/
.button {
  display: inline-block;
  background-color: var(--first-color);
  color: #fff;
  padding: .75rem 2.5rem;
  font-weight: var(--font-semi);
  border-radius: .5rem;
  transition: .3s;
}

.button:hover {
  box-shadow: 0px 10px 36px rgba(0, 0, 0, 0.15);
}

/* ===== ABOUT =====*/
.about__container {
  row-gap: 2rem;
  text-align: center;
}

.about__subtitle {
  margin-bottom: var(--mb-2);
}

.about__img {
  justify-self: center;
}

.about__img img {
  width: 200px;
  border-radius: .5rem;
}

/* ===== SKILLS =====*/
.skills__container {
  row-gap: 2rem;
  text-align: center;
}

.skills__subtitle {
  margin-bottom: var(--mb-2);
}

.skills__text {
  margin-bottom: var(--mb-4);
}

.skills__data {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  font-weight: var(--font-semi);
  padding: .5rem 1rem;
  margin-bottom: var(--mb-4);
  border-radius: .5rem;
  box-shadow: 0px 4px 25px rgba(14, 36, 49, 0.15);
  background-color: var(--container-color);
}

.skills__icon {
  font-size: 2rem;
  margin-right: var(--mb-2);
  color: var(--first-color);
}

.skills__names {
  display: flex;
  align-items: center;
}

.skills__bar {
  position: absolute;
  left: 0;
  bottom: 0;
  background-color: var(--first-color);
  height: .25rem;
  border-radius: .5rem;
  z-index: var(--z-back);
}

.skills__html {
  width: 80%;
}

.skills__css {
  width: 85%;
}

.skills__js {
  width: 75%;
}

.skills__ux {
  width: 90%;
}

.skills__react {
  width: 80%;
}

.skills__nodejs {
  width: 85%;
}

.skills__img {
  border-radius: .5rem;
}

/* ===== WORK =====*/
.work__container {
  row-gap: 2rem;
}

.work__img {
  box-shadow: 0px 4px 25px rgba(14, 36, 49, 0.15);
  border-radius: .5rem;
  overflow: hidden;
  position: relative;
}

.work__img img {
  transition: 1s;
}

.work__img:hover img {
  transform: scale(1.1);
}

.work__overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(64, 112, 244, 0.8);
  color: white;
  padding: 10px;
  text-align: center;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.work__img:hover .work__overlay {
  transform: translateY(0);
}

/* Featured Projects */
.featured-projects {
  margin-top: var(--mb-6);
}

.featured-projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: var(--mb-3);
}

.featured-project-card {
  background-color: var(--container-color);
  border-radius: 0.5rem;
  padding: 1.5rem;
  box-shadow: 0px 4px 25px rgba(14, 36, 49, 0.15);
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.featured-project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0px 10px 30px rgba(14, 36, 49, 0.2);
}

.project-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background-color: var(--first-color);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: var(--font-semi);
}

.featured-project-card h3 {
  color: var(--first-color);
  margin-bottom: var(--mb-1);
}

.featured-project-card p {
  margin-bottom: var(--mb-2);
  color: var(--text-color);
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--mb-2);
}

.tech-stack span {
  background-color: rgba(64, 112, 244, 0.1);
  color: var(--first-color);
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  font-size: 0.75rem;
}

.project-link {
  display: inline-block;
  color: var(--first-color);
  font-weight: var(--font-semi);
  transition: color 0.3s ease;
}

.project-link:hover {
  color: #2952b3;
}

/* ===== CONTACT =====*/
.contact__input {
  width: 100%;
  font-size: var(--normal-font-size);
  font-weight: var(--font-semi);
  padding: 1rem;
  border-radius: .5rem;
  border: 1.5px solid var(--input-color);
  outline: none;
  margin-bottom: var(--mb-4);
  background-color: var(--input-color);
  color: var(--text-color);
}

.contact__button {
  display: block;
  border: none;
  outline: none;
  font-size: var(--normal-font-size);
  cursor: pointer;
  margin-left: auto;
}

.form-message {
  margin-top: var(--mb-2);
  padding: 0.5rem;
  border-radius: 0.5rem;
  text-align: center;
}

.form-message.success {
  background-color: rgba(40, 167, 69, 0.2);
  color: #28a745;
}

.form-message.error {
  background-color: rgba(220, 53, 69, 0.2);
  color: #dc3545;
}

/* ===== FOOTER =====*/
.footer {
  background-color: var(--container-color);
  color: var(--text-color);
  text-align: center;
  font-weight: var(--font-semi);
  padding: 2rem 0;
}

.footer__title {
  font-size: 2rem;
  margin-bottom: var(--mb-4);
}

.footer__social {
  margin-bottom: var(--mb-4);
}

.footer__icon {
  font-size: 1.5rem;
  color: var(--text-color);
  margin: 0 var(--mb-2);
}

.footer__icon:hover, .footer__email:hover {
  color: var(--first-color);
}

.footer__email {
  color: var(--text-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.visitor-counter {
  margin-bottom: var(--mb-2);
  font-size: var(--small-font-size);
}

#visit-count {
  font-weight: bold;
  color: var(--first-color);
}

/* ===== MEDIA QUERIES=====*/
@media screen and (max-width: 320px) {
  .home {
    row-gap: 2rem;
  }
  .home__img {
    width: 200px;
  }
}

@media screen and (min-width: 576px) {
  .home {
    padding: 4rem 0 2rem;
  }
  .home__social {
    padding-top: 0;
    padding-bottom: 2.5rem;
    flex-direction: row;
    align-self: flex-end;
  }
  .home__social-icon {
    margin-bottom: 0;
    margin-right: var(--mb-4);
  }
  .home__img {
    width: 300px;
    bottom: 25%;
  }
  .about__container {
    grid-template-columns: repeat(2, 1fr);
    align-items: center;
    text-align: initial;
  }
  .skills__container {
    grid-template-columns: .7fr;
    justify-content: center;
    column-gap: 1rem;
  }
  .work__container {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 2rem;
    padding-top: 2rem;
  }
  .contact__form {
    width: 360px;
    padding-top: 2rem;
  }
  .contact__container {
    justify-items: center;
  }
}

@media screen and (min-width: 768px) {
  body {
    margin: 0;
  }
  .section {
    padding-top: 4rem;
    padding-bottom: 3rem;
  }
  .section-title {
    margin-bottom: var(--mb-6);
  }
  .section-title::after {
    width: 80px;
    top: 3rem;
  }
  .nav {
    height: calc(var(--header-height) + 1.5rem);
  }
  .nav__list {
    display: flex;
    padding-top: 0;
  }
  .nav__item {
    margin-left: var(--mb-6);
    margin-bottom: 0;
  }
  .nav__toggle {
    display: none;
  }
  .nav__link {
    color: var(--text-color);
  }
  .home {
    padding: 8rem 0 2rem;
  }
  .home__img {
    width: 400px;
    bottom: 10%;
  }
  .about__container {
    padding-top: 2rem;
  }
  .about__img img {
    width: 300px;
  }
  .skills__container {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 2rem;
    align-items: center;
    text-align: initial;
  }
  .work__container {
    grid-template-columns: repeat(3, 1fr);
    column-gap: 2rem;
  }
}

@media screen and (min-width: 992px) {
  .bd-grid {
    margin-left: auto;
    margin-right: auto;
  }
  .home {
    padding: 10rem 0 2rem;
  }
  .home__img {
    width: 450px;
  }
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 10px;
  background-color: var(--scroll-bar-color);
}

::-webkit-scrollbar-thumb {
  background-color: var(--scroll-thumb-color);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background-color: #5a8fd6;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fadeIn {
  animation: fadeIn 1s ease;
}

@keyframes slideInLeft {
  from { transform: translateX(-50px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.slideInLeft {
  animation: slideInLeft 1s ease;
}

@keyframes slideInRight {
  from { transform: translateX(50px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.slideInRight {
  animation: slideInRight 1s ease;
}

/* Loading animation */
.loading {
  display: inline-block;
  position: relative;
  width: 80px;
  height: 80px;
}

.loading div {
  position: absolute;
  top: 33px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--first-color);
  animation-timing-function: cubic-bezier(0, 1, 1, 0);
}

.loading div:nth-child(1) {
  left: 8px;
  animation: loading1 0.6s infinite;
}

.loading div:nth-child(2) {
  left: 8px;
  animation: loading2 0.6s infinite;
}

.loading div:nth-child(3) {
  left: 32px;
  animation: loading2 0.6s infinite;
}

.loading div:nth-child(4) {
  left: 56px;
  animation: loading3 0.6s infinite;
}

@keyframes loading1 {
  0% { transform: scale(0); }
  100% { transform: scale(1); }
}

@keyframes loading3 {
  0% { transform: scale(1); }
  100% { transform: scale(0); }
}

@keyframes loading2 {
  0% { transform: translate(0, 0); }
  100% { transform: translate(24px, 0); }
}

/*===== CERTIFICATIONS =====*/
.certifications {
  margin-top: var(--mb-6);
}

.certifications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--mb-4);
  margin-top: var(--mb-3);
}

.certification-card {
  background-color: var(--container-color);
  border-radius: 0.5rem;
  padding: var(--mb-3);
  box-shadow: 0 4px 25px rgba(14, 36, 49, 0.15);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.certification-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 35px rgba(14, 36, 49, 0.2);
}

.certification-img {
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: 0.5rem;
  margin-bottom: var(--mb-2);
}

.certification-info h3 {
  color: var(--first-color);
  font-size: var(--h2-font-size);
  font-weight: var(--font-semi);
  margin-bottom: var(--mb-1);
}

.certification-info p {
  color: var(--text-color);
  font-size: var(--normal-font-size);
  margin-bottom: var(--mb-1);
}

.certification-date {
  font-weight: var(--font-semi);
  color: var(--first-color);
}

.certification-validity {
  font-style: italic;
  color: var(--third-color);
}