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

  --hue-color: 250;

  --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%, 26%);
  --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;
  --container-color-grey: #d0d0d0;
  --scroll-bar-color: hsl(var(--hue-color), 12%, 90%);
  --scroll-thumb-color: hsl(var(--hue-color), 12%, 80%);

  --big-font-size: 2rem;
  --h1-font-size: 1.5rem;
  --h2-font-size: 1.25rem;
  --h3-font-size: 1.124rem;
  --normal-font-size: 0.938rem;
  --small-font-size: 0.813rem;
  --smaller-font-size: 0.75rem;

  --font-light: 300;
  --font-medium: 500;
  --font-semi-bold: 600;

  --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;

  /* FIX 1: Mobile margin giảm xuống để tránh tràn ngang */
  --strch-grid-mobile: 1rem;
  --strch-grid-tablet: 1.5rem;

  --z-tooltip: 10;
  --z-fixed: 100;
  --z-modal: 1000;
}

*::selection {
  color: rgb(233, 231, 231);
  background-color: var(--first-color-second);
}

@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;
    --strch-grid-tablet: 4.375rem;
  }
}

/* =================== Variables Dark Theme =================== */
body.dark-theme {
  background-image:
    radial-gradient(ellipse 120% 60% at 15% 0%,
      hsl(250, 40%, 14%) 0%, transparent 70%),
    radial-gradient(ellipse 100% 70% at 90% 100%,
      hsl(185, 35%, 11%) 0%, transparent 65%),
    radial-gradient(ellipse 80% 50% at 50% 50%,
      hsl(210, 30%, 13%) 0%, transparent 100%);
  /* --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%); */
}

/* =================== Button Dark/Light =================== */
.nav__btns {
  display: flex;
  align-items: center;
}

.change-theme {
  margin-right: var(--mb-1);
  color: var(--title-color);
  font-size: 1.5rem;
  cursor: pointer;
}

/* =================== BASE =================== */
* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0 0 var(--header-height) 0;
  font-family: "Poppins", sans-serif;
  font-size: var(--normal-font-size);
  color: var(--text-color);
  background-color: var(--body-color);
  /* FIX 2: Ngăn overflow ngang toàn trang */
  /* Gradient nhẹ: purple (hsl 250) → cyan (hsl 185), fixed khi scroll */
  background-color: var(--body-color);
  background-image:
    radial-gradient(ellipse 120% 60% at 15% 0%,
      hsl(250, 80%, 97%) 0%, transparent 70%),
    radial-gradient(ellipse 100% 70% at 90% 100%,
      hsl(185, 75%, 94%) 0%, transparent 65%),
    radial-gradient(ellipse 80% 50% at 50% 50%,
      hsl(210, 60%, 97%) 0%, transparent 100%);
  background-attachment: fixed;
 
  overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
  color: var(--title-color);
  font-weight: var(--font-semi-bold);
}

ul {
  list-style: none;
}

a {
  text-decoration: none;
}

/* FIX 3: Ảnh responsive đúng cách */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section {
  display: block;
}

blockquote,
q {
  quotes: none;
}

blockquote:before,
blockquote:after,
q:before,
q:after {
  content: "";
  content: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* =================== REUSABLE CSS CLASSES =================== */
/* FIX 4: .main không dùng margin-left cứng – gây tràn trên mobile */
.main {
  max-width: 1440px;
  margin: 0 auto;
  overflow-x: hidden;
}

.d-block {
  display: block;
}

.section {
  padding: 2rem 0 4rem;
}

.section__title {
  font-size: var(--big-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 =================== */
/* FIX 5: Container dùng padding thay vì margin cứng */
.container {
  max-width: 1300px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--strch-grid-tablet);
  padding-right: var(--strch-grid-tablet);
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.header {
  position: fixed;
  bottom: 0;
  left: 0;
  z-index: var(--z-fixed);
  width: 100%;
  background-color: var(--body-color);
}

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

.nav__logo {
  line-height: 48px;
}

.nav__logo,
.nav__toggle {
  color: var(--title-color);
  font-weight: var(--font-medium);
}

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

.nav__toggle {
  font-size: 1.8rem;
  cursor: pointer;
}

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

@media screen and (max-width: 767px) {
  .nav__menu {
    position: fixed;
    bottom: -100%;
    left: 0;
    width: 100%;
    padding: 2rem 1.5rem 4rem;
    border-radius: 1.5rem 1.5rem 0 0;
    background-color: var(--body-color);
    box-shadow: 0 -1px 4px rgba(0, 0, 0, 0.15);
    transition: 0.3s;
  }
}

.nav__list {
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.nav__link {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: var(--small-font-size);
  font-weight: var(--font-medium);
  color: var(--title-color);
}

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

.nav__icon {
  font-size: 1.2rem;
}

.nav__close {
  position: absolute;
  right: 1.3rem;
  bottom: 0.5rem;
  font-size: 1.5rem;
  color: var(--first-color);
  cursor: pointer;
}

.nav__close:hover {
  color: var(--first-color-alt);
}

.show-menu {
  bottom: 0;
}

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

.scroll-header {
  box-shadow: 0 -1px 4px rgba(0, 0, 0, 0.15);
}

/* =================== HOME =================== */
.home {
  width: 100%;
}

.home__container {
  gap: 1rem;
}

.home__content {
  grid-template-columns: 0.5fr 3fr;
  padding-top: 3.5rem;
  align-items: center;
}

/* home__data trải full width trên mobile */

.home__social {
  display: grid;
  grid-template-columns: max-content;
  row-gap: 1rem;
}

.home__social-icon {
  font-size: 1.25rem;
  color: var(--first-color);
}

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

/* FIX 6: SVG blob quá to trên mobile (500px) → thu nhỏ lại */
/* Mobile-first: nhỏ để không tràn */
.home__blob {
  width: 200px;
  height: 200px;
  fill: var(--first-color);
}

.home__blob-img {
  width: 550px;
}

/* mobile: data trải 2 cột */
.home__data {
  grid-column: 1/3;
}

.home__title {
  font-size: var(--big-font-size);
}

.home__subtitle {
  color: var(--text-color);
  font-size: var(--h3-font-size);
  font-weight: var(--font-light);
  letter-spacing: 3px;
  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: 0.3s;
}

.home__scroll-button:hover {
  transform: translateY(0.25rem);
}

.home__scroll-mouse {
  font-size: 2rem;
}

.home__scroll-name {
  margin-right: var(--mb-0-25);
  color: var(--title-color);
  font-size: var(--small-font-size);
  font-weight: var(--font-medium);
}

.home__scroll-arrow {
  font-size: 1.25rem;
}

/* =================== BUTTONS =================== */
.button {
  display: inline-block;
  padding: 1rem;
  border-radius: 0.5rem;
  color: #fff;
  background-color: var(--first-color);
  font-weight: var(--font-medium);
  cursor: pointer;
}

.button:hover {
  background-color: var(--first-color-alt);
}

.button--white {
  background-color: #fff;
  color: var(--first-color);
}

.button--white:hover {
  background-color: #fff;
}

.button__icon {
  margin-left: var(--mb-0-5);
  font-size: 1.25rem;
  transition: 0.3s;
}

.button--flex {
  display: inline-flex;
  align-items: center;
}

.button--small {
  padding: 0.75rem 1rem;
}

.button--link {
  padding: 0;
  background-color: transparent;
  color: var(--first-color);
}

.button--link:hover {
  background-color: transparent;
  color: var(--first-color-alt);
}

/* =================== BLOCK CAPTION =================== */
.block__caption {
  position: relative;
  display: inline-block;
  padding: 0 1rem;
  text-transform: uppercase;
}

.block__caption:before {
  left: 0;
  transform: translateX(-100%) translateY(-50%);
}

.block__caption:after {
  right: 0;
  transform: translateX(100%) translateY(-50%);
}

.block__caption:before,
.block__caption:after {
  content: "";
  position: absolute;
  height: 0.1rem;
  width: 2rem;
  background-color: var(--first-color-lighter);
  top: 50%;
}

/* =================== ABOUT =================== */
.about__img {
  width: 220px;
  border-radius: 0.5rem;
  justify-self: center;
  align-self: center;
}

.about__description {
  text-align: center;
  margin-bottom: 2.625rem;
}

.about__info {
  display: flex;
  justify-content: space-evenly;
  margin-bottom: var(--mb-2-5);
}

.about__info-title {
  font-size: var(--h2-font-size);
  font-weight: var(--font-semi-bold);
  color: var(--title-color);
}

.about__info-name {
  font-size: var(--smaller-font-size);
}

.about__info-title,
.about__info-name {
  display: block;
  text-align: center;
}

.about__button {
  display: flex;
  justify-content: center;
}

/* =================== SERVICES =================== */
/* FIX 8: Services 2 cột → trên mobile 1 cột */
.services__container {
  grid-template-columns: repeat(2, 1fr);
}

.services__content {
  position: relative;
  background-color: var(--container-color);
  padding: 3.5rem 0.5rem 1.25rem 1.5rem;
  border-radius: 0.25rem;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
  transition: 0.3s;
}

.services__content:hover {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.services__title {
  font-size: var(--h3-font-size);
  font-weight: var(--font-medium);
  margin-bottom: var(--mb-1);
}

.services__icon,
.services__modal-icon {
  color: var(--first-color);
}

.services__icon {
  display: block;
  font-size: 1.5rem;
  margin-bottom: var(--mb-1);
}

.services__modal-icon {
  margin-right: var(--mb-0-25);
}

.services__button {
  cursor: pointer;
  font-size: var(--small-font-size);
}

.services__button:hover .button__icon {
  transform: translateX(0.25rem);
}

.services__modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(0, 0, 0, 0.5);
  padding: 0 1rem;
  opacity: 0;
  visibility: hidden;
  transition: 0.3s;
}

.services__modal-content {
  position: relative;
  padding: 1.5rem;
  border-radius: 0.5rem;
  background-color: var(--container-color);
}

.services__modal-services {
  row-gap: 1rem;
}

.services__modal-service {
  display: flex;
}

.services__modal-title {
  font-size: var(--h3-font-size);
  font-weight: var(--font-medium);
  margin-bottom: var(--mb-1-5);
}

.services__modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  color: var(--first-color);
  font-size: 1.5rem;
  cursor: pointer;
}

.active-modal {
  opacity: 1;
  visibility: visible;
}

/* =================== PROJECTS =================== */
.projects__container {
  overflow: initial;
}

.projects__content {
  padding: 0 1.5rem;
}

.projects-img {
  border-radius: 0.5rem;
  justify-self: center;
}

.projects__description {
  margin-bottom: var(--mb-0-75);
  text-align: justify;
  hyphens: auto;
}

.projects__button:hover .button__icon {
  transform: translateX(0.25rem);
}

.swiper-projects-icon {
  font-size: 2rem;
  color: var(--first-color);
}

/* =================== SKILLS =================== */
/* FIX 9: padding 12rem hai bên trên mobile làm content bị ép → xoá đi */
.skills__container {
  row-gap: 0;
  /* padding-right/left được xử lý bởi .container */
}

.skills__header {
  position: relative;
  display: flex;
  align-items: center;
  margin-bottom: var(--mb-2-5);
  cursor: pointer;
}

.skills__icon,
.skills__arrow {
  font-size: 2rem;
  color: var(--first-color);
}

.skills__icon {
  margin-right: var(--mb-0-75);
}

.skills__titles {
  font-size: var(--h3-font-size);
  display: flex;
  justify-content: space-between;
}

.skills__name {
  font-size: var(--normal-font-size);
  font-weight: var(--font-medium);
}

.skills__subtitle {
  font-size: var(--small-font-size);
  color: var(--text-color-light);
}

.skills__arrow {
  margin-left: auto;
  transition: 0.4s;
}

.skills__list {
  row-gap: 1.5rem;
  padding-left: 2.7rem;
}

.skills__bar,
.skills__percentage {
  height: 5px;
  border-radius: 0.25rem;
}

.skills__bar {
  background-color: var(--first-color-lighter);
}

.skills__percentage {
  display: block;
  background-color: var(--first-color);
}

.skills__html {
  width: 80%;
}

.skills__css {
  width: 70%;
}

.skills__js {
  width: 50%;
}

.skills__react {
  width: 10%;
}

.skills__php {
  width: 60%;
}

.skills__firebase {
  width: 55%;
}

.skills__python {
  width: 40%;
}

.skills__api {
  width: 70%;
}

.skills__photoshop {
  width: 60%;
}

.skills__illustrator {
  width: 75%;
}

.skills__figma {
  width: 50%;
}

.skills__sketch {
  width: 70%;
}

.skills__close .skills__list {
  height: 0;
  overflow: hidden;
}

.skills__open .skills__list {
  height: max-content;
  margin-bottom: var(--mb-2-5);
}

.skills__open .skills__arrow {
  transform: rotate(-180deg);
}

/* =================== QUALIFICATION =================== */
.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;
}

.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%;
}

.qualification__line {
  display: block;
  width: 1px;
  height: 100%;
  background-color: var(--first-color);
  transform: translate(6px, -7px);
}

.qualification [data-content] {
  display: none;
}

.qualification__active[data-content] {
  display: block;
}

.qualification__button.qualification__active {
  color: var(--first-color);
}

.qualification__data .qualification__left {
  text-align: end;
}

/* =================== PROJECT IN MIND =================== */
.project {
  text-align: center;
}

.project__bg {
  background-color: var(--first-color-second);
  padding-top: 3rem;
}

.project__title {
  font-size: var(--h2-font-size);
  margin-bottom: var(--mb-0-75);
}

.project__description {
  margin-bottom: var(--mb-1-5);
}

.project__title,
.project__description {
  color: #fff;
}

.project__img {
  width: 368px;
  justify-self: center;
}

/* =================== TESTIMONIAL =================== */
.testimonial__content {
  padding: 0 1.5rem;
}

.testimonial__data,
.testimonial__header {
  display: flex;
}

.testimonial__data {
  justify-content: space-between;
  margin-bottom: var(--mb-1);
}

.testimonial__img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  margin-right: var(--mb-0-75);
}

.testimonial__name {
  font-size: var(--h3-font-size);
  font-weight: var(--font-medium);
}

.testimonial__client {
  font-size: var(--small-font-size);
  color: var(--text-color-light);
}

.testimonial__icon-star {
  color: var(--first-color);
}

.testimonial__description {
  margin-bottom: var(--mb-2-5);
}

/* =================== CONTACT =================== */
.contact__information {
  display: flex;
  margin-bottom: var(--mb-2);
}

.contact__icon {
  font-size: 2rem;
  margin-right: var(--mb-0-75);
  color: var(--first-color);
}

.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);
}

.contact__content {
  background-color: var(--input-color);
  border-radius: 0.5rem;
  padding: 0.75rem 1rem 0.5rem;
}

.contact__lable {
  color: var(--text-color-light);
  font-size: var(--smaller-font-size);
}

.contact__input {
  width: 100%;
  border: none;
  outline: none;
  padding: 0.25rem 0.5rem 0.5rem 0;
  background-color: var(--input-color);
  color: var(--text-color);
  font-family: "Poppins", sans-serif;
  font-size: var(--normal-font-size);
  resize: none;
}

.button-contact {
  display: block;
  text-align: center;
  padding: 0.8rem;
}

/* =================== FOOTER =================== */
.footer {
  padding-top: 2rem;
}

.footer__container {
  row-gap: 3.5rem;
}

.footer__bg {
  background-color: var(--first-color-second);
  padding: 2rem 0 3rem;
}

.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__link,
.footer__social:hover {
  color: var(--first-color-lighter);
}

.footer__icon {
  font-size: 1.5rem;
  margin-right: var(--mb-1-5);
}

.footer__title,
.footer__subtitle,
.footer__social,
.footer__link {
  color: #fff;
}

.footer__copy {
  padding: 2rem;
  color: var(--text-color-light);
  text-align: center;
}

/* =================== SCROLL UP =================== */
.scrollup {
  position: fixed;
  right: 1rem;
  bottom: -20%;
  z-index: var(--z-tooltip);
  padding: 0 0.3rem;
  border-radius: 0.4rem;
  background-color: var(--first-color);
  opacity: 0.8;
  transition: 0.4s;
}

.scrollup:hover {
  background-color: var(--first-color-alt);
}

.scrollup__icon {
  font-size: 1.5rem;
  color: #fff;
}

.scrollup__icon:hover {
  color: var(--first-color-alt);
}

.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;
}

::-webkit-scrollbar-thumb:hover {
  background-color: var(--text-color-light);
}

/* =================== MEDIA QUERIES =================== */

/* ── Extra small (≤ 350px) ── */
@media screen and (max-width: 350px) {
  html {
    font-size: 85%;
  }

  .container {
    padding-left: var(--strch-grid-mobile);
    padding-right: var(--strch-grid-mobile);
  }

  .nav__menu {
    padding: 2rem 0.25rem 4rem;
  }

  .nav__list {
    column-gap: 0;
  }

  /* FIX 10: Home layout đơn giản hoá thành 1 cột */
  .home__content {
    grid-template-columns: 1fr;
  }

  .home__social {
    display: none;
  }

  .home__data {
    grid-column: 1;
    padding-left: 0;
  }

  .home__title {
    font-size: 1.6rem;
  }

  .home__blob {
    width: 160px;
    height: 160px;
  }

  .home__blob-img {
    width: 200px;
  }

  .skills__title {
    font-size: var(--normal-font-size);
  }

  /* FIX 11: Skills container trên màn nhỏ không cần padding extra */
  .skills__container {
    padding: 0;
  }

  .qualification__data {
    gap: 0.5rem;
  }

  .services__container {
    grid-template-columns: 1fr;
    justify-content: center;
  }

  .services__content {
    padding-right: 1.5rem;
  }

  .services__modal {
    padding: 0 0.5rem;
  }

  .project__img {
    width: 200px;
  }

  .testimonial__data,
  .testimonial__header {
    flex-direction: column;
    align-items: center;
  }

  .testimonial__img {
    margin-right: 0;
    margin-bottom: var(--mb-0-25);
  }

  .testimonial__data,
  .testimonial__description {
    text-align: center;
  }

  .footer__copy {
    padding: 1.5rem;
  }

  .footer__container {
    row-gap: 2rem;
  }
}

/* ── Small-Medium (351px – 567px) ── */
/* FIX 12: Thêm breakpoint 480px còn thiếu hoàn toàn trong bản gốc */
@media screen and (max-width: 567px) {

  /* Home – 1 cột, social ở trên */
  .home__content {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }

  .home__social {
    grid-template-columns: repeat(3, max-content);
    column-gap: 1rem;
    justify-self: center;
  }

  .home__img {
    order: -1;
  }

  .home__data {
    grid-column: 1;
  }

  .home__title {
    font-size: 1.8rem;
  }

  .home__blob {
    width: 180px;
    height: 180px;
  }

  .home__blob-img {
    width: 550px;
  }

  /* Skills 1 cột */
  .skills__container {
    grid-template-columns: 1fr;
  }

  /* Services 1 cột */
  .services__container {
    grid-template-columns: 1fr;
  }

  /* About 1 cột */
  .about__container {
    grid-template-columns: 1fr;
  }

  .about__img {
    width: 180px;
  }

  /* Footer 1 cột */
  .footer__container {
    grid-template-columns: 1fr;
  }

  .footer__socials {
    justify-self: start;
  }
}

/* ── Medium (568px – 767px) ── */
@media screen and (min-width: 568px) and (max-width: 767px) {
  .home__content {
    grid-template-columns: max-content 1fr 1fr;
  }

  .home__data {
    grid-column: initial;
  }

  .home__img {
    order: 1;
    justify-self: center;
  }

  .home__blob {
    width: 220px;
    height: 220px;
  }

  .home__blob-img {
    width: 550px;
  }

  .about__container,
  .skills__container,
  .projects__content,
  .project__container,
  .contact__container,
  .footer__container {
    grid-template-columns: repeat(2, 1fr);
  }

  .testimonial__data,
  .testimonial__header {
    flex-direction: column;
    align-items: center;
  }

  .testimonial__img {
    margin-right: 0;
    margin-bottom: var(--mb-0-25);
  }

  .testimonial__data,
  .testimonial__description {
    text-align: center;
  }

  .qualification__sections {
    display: grid;
    grid-template-columns: 0.6fr;
    justify-content: center;
  }

  .qualification__data .qualification__left {
    text-align: start;
  }
}

/* ── Tablet (768px+) ── */
@media screen and (min-width: 768px) {
  body {
    margin: 0;
  }

  .section {
    padding: 3rem 0 2rem;
  }

  .section__subtitle {
    margin-bottom: 4rem;
  }

  .header {
    top: 0;
    bottom: initial;
  }

  .header,
  .footer__container {
    padding: 0 1rem;
  }

  .nav {
    height: calc(var(--header-height) + 1.5rem);
    column-gap: 1rem;
    align-items: center;
  }

  .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: 0.5rem;
  }

  .home__content {
    padding-top: 5.5rem;
    column-gap: 2rem;
    /* Bản gốc: 3 cột — social | blob | data */
    grid-template-columns: max-content 1fr 1fr;
  }

  /* data về cột riêng, không span nữa */
  .home__data {
    grid-column: initial;
  }

  .home__img {
    order: 1;
    justify-self: center;
  }

  /* Restore kích thước blob đầy đủ trên desktop */
  .home__blob {
    width: 500px;
    height: 500px;
  }

  .home__blob-img {
    width: 600px;
  }

  .home__scroll {
    display: block;
  }

  .home__scroll-button {
    margin-left: 3rem;
  }

  .about__container {
    column-gap: 5rem;
  }

  .about__img {
    width: 350px;
    height: auto;
  }

  .about__description {
    text-align: initial;
  }

  .about__info {
    justify-content: space-between;
  }

  .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(4, 1fr);
    justify-content: center;
  }

  .services__title {
    font-size: 95%;
  }

  .services__icon {
    font-size: 2rem;
  }

  .services__content {
    padding: 6rem 0 2rem 2.5rem;
  }

  .services__modal-content {
    width: 450px;
  }

  .testimonial__data,
  .testimonial__header {
    flex-direction: row;
  }

  .testimonial__data,
  .testimonial__description {
    text-align: start;
  }

  .project__img {
    width: 271px;
    justify-self: center;
  }

  .projects__content {
    align-items: center;
  }

  .project {
    text-align: initial;
  }

  .project__bg {
    background: none;
  }

  .project__container {
    grid-template-columns: 1fr max-content;
    column-gap: 3rem;
    border-radius: 1rem;
    padding: 3rem 2.5rem 0;
    background-color: var(--first-color-second);
  }

  span br {
    display: none;
  }

  .project__data {
    padding-top: 0.8rem;
  }

  .footer__container {
    grid-template-columns: repeat(3, 1fr);
    align-items: center;
  }

  .footer__bg {
    padding: 3rem 0 1.5rem;
  }

  .footer__links {
    flex-direction: row;
    column-gap: 2rem;
  }

  .footer__socials {
    justify-self: flex-end;
  }

  .footer__copy {
    margin-top: 4.5rem;
  }

  /* FIX 13: Skills padding chỉ thêm trên tablet trở lên */
  .skills__container {
    padding-left: 4rem;
    padding-right: 4rem;
  }
}

/* ── Desktop (1024px+) ── */
@media screen and (min-width: 1024px) {

  .header,
  /* .main, */
  .footer__container {
    padding: 0;
  }

  /* FIX 14: main dùng margin-left cứng chỉ ở desktop */
  .main {
    /* margin-left: 6rem; */
    margin-left: auto;
    margin-right: auto;
  }

  .home__blob {
    width: 500px;
    height: 500px;
  }

  .home__blob-img {
    width: 550px;
  }

  .home__social {
    transform: translateX(-6rem);
  }

  .home__data {
    padding: 0 1.25rem;
  }

  .home__scroll {
    padding: 0 1.25rem;
  }

  .about__img {
    width: 420px;
  }

  .skills__container {
    padding-left: 12rem;
    padding-right: 12rem;
  }

  .services__container {
    grid-template-columns: repeat(4, 228px);
  }

  .projects__content {
    column-gap: 5rem;
  }

  .swiper-projects-icon {
    font-size: 3.5rem;
  }

  .contact__form {
    width: 768px;
  }

  .contact__inputs {
    grid-template-columns: repeat(2, 1fr);
  }
}