/*==================== GOOGLE FONTS ====================*/
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

/*==================== VARIABLES CSS ====================*/
:root {
  /* Extracting colors from the portrait: Camel sweater, charcoal hair, neutral background */
  --hue-color: 32; /* Camel/Brown tone hue */

  /* Light Theme (Warm Neutrals) */
  --first-color: hsl(var(--hue-color), 38%, 56%); /* Camel/Beige tone #B58B66 */
  --first-color-alt: hsl(var(--hue-color), 38%, 48%); 
  --title-color: hsl(20, 4%, 18%); /* Charcoal #2D2A29 */
  --text-color: hsl(20, 2%, 42%);
  --text-color-light: hsl(20, 4%, 60%);
  --body-color: hsl(36, 33%, 97%); /* #FDFBF7 Warm off-white */
  --container-color: hsl(0, 0%, 100%);
  --border-color: hsl(20, 10%, 90%);

  /* Font and typography */
  --body-font: 'Plus Jakarta Sans', sans-serif;

  /* Form typography */
  --big-font-size: 2rem;
  --h1-font-size: 1.5rem;
  --h2-font-size: 1.25rem;
  --h3-font-size: 1.125rem;
  --normal-font-size: .938rem;
  --small-font-size: .813rem;
  --smaller-font-size: .75rem;

  /* Font weight */
  --font-light: 300;
  --font-medium: 500;
  --font-semi-bold: 600;
  --font-bold: 700;
  --font-extra-bold: 800;

  /* Margenes Bottom */
  --mb-0-25: .25rem;
  --mb-0-5: .5rem;
  --mb-0-75: .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;

  /* Transitions */
  --transition-fast: .2s ease;
  --transition-normal: .4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Responsive typography */
@media screen and (min-width: 968px) {
  :root {
    --big-font-size: 3.5rem;
    --h1-font-size: 2.5rem;
    --h2-font-size: 1.75rem;
    --h3-font-size: 1.25rem;
    --normal-font-size: 1rem;
    --small-font-size: .875rem;
    --smaller-font-size: .813rem;
  }
}

/*==================== DARK THEME ====================*/
body.dark-theme {
  --title-color: hsl(36, 20%, 95%);
  --text-color: hsl(36, 8%, 70%);
  --body-color: hsl(24, 6%, 10%); /* Very dark brown/charcoal #1B1A19 */
  --container-color: hsl(24, 6%, 13%); /* Slightly lighter #222120 */
  --border-color: hsl(24, 6%, 20%);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
  background-color: var(--body-color);
  color: var(--text-color);
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4 {
  color: var(--title-color);
  font-weight: var(--font-bold);
  line-height: 1.2;
}

ul {
  list-style: none;
}

a {
  text-decoration: none;
  color: inherit;
}

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

/*==================== REUSABLE CSS CLASSES ====================*/
.container {
  max-width: 1024px;
  margin-left: var(--mb-1-5);
  margin-right: var(--mb-1-5);
}

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

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

.section {
  padding: 6rem 0 2rem;
}

.section__title {
  font-size: var(--h2-font-size);
  text-align: center;
  margin-bottom: var(--mb-0-25);
}

.section__subtitle {
  display: block;
  font-size: var(--small-font-size);
  color: var(--text-color-light);
  text-align: center;
  margin-bottom: var(--mb-3);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: var(--font-medium);
}

.text-accent {
  color: var(--first-color);
}

/*==================== HEADER & NAV ====================*/
.header {
  width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  z-index: var(--z-fixed);
  background-color: transparent;
  transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.header.scroll-header {
  background-color: var(--body-color);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
}

.nav {
  height: calc(3rem + 1.5rem);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav__logo {
  font-weight: var(--font-extra-bold);
  font-size: var(--h3-font-size);
  color: var(--title-color);
  letter-spacing: -0.5px;
}

.nav__actions {
  display: flex;
  align-items: center;
  column-gap: 1rem;
}

.change-theme {
  font-size: 1.25rem;
  color: var(--title-color);
  cursor: pointer;
  transition: color var(--transition-fast);
}

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

.nav__toggle {
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--title-color);
}

@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,.05);
    border-radius: 1.5rem 1.5rem 0 0;
    transition: bottom .3s;
  }
}

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

.nav__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 var(--transition-fast);
}

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

.nav__close {
  position: absolute;
  right: 1.3rem;
  bottom: .5rem;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--title-color);
}

.show-menu {
  bottom: 0;
}

/*==================== BUTTONS ====================*/
.button {
  display: inline-block;
  background-color: var(--first-color);
  color: #fff;
  padding: 1rem 2rem;
  border-radius: .5rem;
  font-weight: var(--font-medium);
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  cursor: pointer;
  border: none;
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
}

.button:hover {
  background-color: var(--first-color-alt);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px hsla(var(--hue-color), 38%, 56%, 0.3);
}

.button--ghost {
  background-color: transparent;
  color: var(--title-color);
  border: 1px solid var(--border-color);
}

.button--ghost:hover {
  background-color: var(--container-color);
  border-color: var(--first-color);
  color: var(--first-color);
  box-shadow: none;
}

/*==================== HERO ====================*/
.hero__container {
  padding-top: 3rem;
  gap: 3rem;
}

.hero__data {
  text-align: center;
}

.hero__title {
  font-size: var(--big-font-size);
  letter-spacing: -1px;
  margin-bottom: var(--mb-0-75);
}

.hero__subtitle {
  font-size: var(--h3-font-size);
  color: var(--text-color);
  font-weight: var(--font-medium);
  margin-bottom: var(--mb-1-5);
}

.hero__description {
  margin-bottom: var(--mb-2);
  line-height: 1.6;
}

.hero__buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.hero__image-wrapper {
  position: relative;
  width: 250px;
  height: 250px;
  margin: 0 auto;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--first-color) 0%, transparent 100%);
  padding: 5px;
}

.hero__img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  background-color: var(--container-color); /* Fallback */
}

/*==================== ABOUT ====================*/
.about__container {
  gap: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.about__description {
  text-align: center;
  margin-bottom: var(--mb-1-5);
  line-height: 1.7;
}

.about__info {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: var(--mb-2);
}

.about__info-box {
  background-color: var(--container-color);
  border: 1px solid var(--border-color);
  padding: 1.5rem 1rem;
  border-radius: 1rem;
  text-align: center;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.about__info-box:hover {
  transform: translateY(-5px);
  border-color: var(--first-color);
}

.about__info-icon {
  font-size: 1.5rem;
  margin-bottom: var(--mb-0-5);
}

.about__info-title {
  font-size: var(--normal-font-size);
  margin-bottom: var(--mb-0-25);
}

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

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

.skills__content {
  background-color: var(--container-color);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: 1.25rem;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.skills__content:hover {
  border-color: var(--first-color);
  transform: translateY(-5px);
}

.skills__title {
  font-size: var(--h3-font-size);
  margin-bottom: var(--mb-1-5);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

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

.skills__box {
  display: flex;
  justify-content: center;
  column-gap: 2.5rem;
}

.skills__group {
  display: grid;
  align-content: flex-start;
  row-gap: 1rem;
}

.skills__data {
  display: flex;
  column-gap: 0.5rem;
  align-items: flex-start;
}

.skills__data i {
  margin-top: 3px;
  font-size: 1rem;
}

.skills__name {
  font-size: var(--normal-font-size);
  font-weight: var(--font-medium);
  line-height: 1.2;
}

/*==================== PROJECTS ====================*/
.projects__container {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.projects__card {
  background-color: var(--container-color);
  border: 1px solid var(--border-color);
  border-radius: 1.25rem;
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.projects__card:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.05);
}

body.dark-theme .projects__card:hover {
  box-shadow: 0 12px 24px rgba(0,0,0,0.2);
}

.projects__image-wrapper {
  width: 100%;
  height: 200px;
  background-color: var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
}

.projects__image-placeholder i {
  font-size: 3rem;
  color: var(--text-color-light);
  opacity: 0.5;
}

.projects__content {
  padding: 1.5rem;
}

.projects__title {
  font-size: var(--h3-font-size);
  margin-bottom: var(--mb-0-5);
}

.projects__description {
  font-size: var(--small-font-size);
  color: var(--text-color);
  margin-bottom: var(--mb-1);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;  
  overflow: hidden;
}

.projects__tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--mb-1-5);
}

.projects__tech li {
  font-size: var(--smaller-font-size);
  background-color: var(--body-color);
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  color: var(--text-color);
  font-weight: var(--font-medium);
  border: 1px solid var(--border-color);
}

.projects__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--small-font-size);
  font-weight: var(--font-semi-bold);
  color: var(--first-color);
  transition: color var(--transition-fast);
}

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

/*==================== VIDEO ====================*/
.video__container {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.video__card {
  border-radius: 1.25rem;
  overflow: hidden;
  background-color: var(--container-color);
  border: 1px solid var(--border-color);
}

.video__embed-wrapper {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
  background-color: #000;
}

.video__placeholder {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  text-align: center;
  background-color: var(--border-color);
}

.video__icon {
  font-size: 3rem;
  margin-bottom: 0.5rem;
  color: var(--text-color-light);
}

.dark-theme .video__placeholder {
  background-color: #111;
}

/*==================== EXPERIENCE TIMELINE ====================*/
.experience__container {
  max-width: 700px;
}

.experience__timeline {
  position: relative;
  border-left: 2px solid var(--border-color);
  margin-left: 1rem;
}

.timeline__item {
  position: relative;
  padding-left: 2rem;
  margin-bottom: var(--mb-2-5);
}

.timeline__item:last-child {
  margin-bottom: 0;
}

.timeline__dot {
  position: absolute;
  left: -7px;
  top: 0;
  width: 12px;
  height: 12px;
  background-color: var(--first-color);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--body-color);
}

.timeline__date {
  font-size: var(--smaller-font-size);
  color: var(--first-color);
  font-weight: var(--font-bold);
  display: inline-block;
  margin-bottom: var(--mb-0-25);
}

.timeline__title {
  font-size: var(--h3-font-size);
  margin-bottom: var(--mb-0-25);
}

.timeline__subtitle {
  display: block;
  font-size: var(--small-font-size);
  color: var(--text-color-light);
  margin-bottom: var(--mb-0-75);
}

.timeline__text {
  font-size: var(--normal-font-size);
  line-height: 1.6;
}

/*==================== CONTACT ====================*/
.contact__container {
  row-gap: 3rem;
  padding-bottom: 3rem;
}

.contact__info {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.contact__card {
  background-color: var(--container-color);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: 1rem;
  text-align: center;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.contact__card:hover {
  transform: translateY(-5px);
  border-color: var(--first-color);
}

.contact__card-icon {
  font-size: 2rem;
  margin-bottom: var(--mb-0-5);
}

.contact__card-title,
.contact__card-data {
  display: block;   
}

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

.contact__card-data {
  font-size: var(--small-font-size);
  color: var(--text-color-light);
  margin-bottom: var(--mb-1);
}

.contact__button {
  color: var(--first-color);
  font-size: var(--small-font-size);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  column-gap: .25rem;
  font-weight: var(--font-medium);
  transition: column-gap var(--transition-fast);
}

.contact__button:hover {
  column-gap: .5rem;
}

.contact__form-div {
  position: relative;
  margin-bottom: var(--mb-2);
  height: 4rem;
}

.contact__form-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 1px solid var(--border-color);
  background: none;
  color: var(--text-color);
  outline: none;
  border-radius: .5rem;
  padding: 1.5rem;
  z-index: 1;
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
  background-color: var(--container-color);
  transition: border-color var(--transition-fast);
}

.contact__form-input:focus {
  border-color: var(--first-color);
}

.contact__form-tag {
  position: absolute;
  top: -0.75rem;
  left: 1.25rem;
  font-size: var(--smaller-font-size);
  padding: .25rem;
  background-color: var(--container-color);
  z-index: 10;
  font-weight: var(--font-medium);
  border-radius: 4px;
}

.contact__form-area {
  height: 11rem;
}
.contact__form-area textarea {
  resize: none;
}

/*==================== FOOTER ====================*/
.footer {
  background-color: var(--container-color);
  border-top: 1px solid var(--border-color);
}

.footer__container {
  padding: 3rem 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.footer__title {
  font-size: var(--h2-font-size);
  color: var(--title-color);
  letter-spacing: -1px;
}

.footer__list {
  display: flex;
  justify-content: center;
  column-gap: 1.5rem;
}

.footer__link {
  color: var(--text-color);
  transition: color var(--transition-fast);
  font-weight: var(--font-medium);
}

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

.footer__social {
  display: flex;
  justify-content: center;
  column-gap: 1.25rem;
}

.footer__social-link {
  background-color: var(--body-color);
  color: var(--title-color);
  font-size: 1.25rem;
  padding: .5rem;
  border-radius: .5rem;
  display: inline-flex;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  border: 1px solid var(--border-color);
}

.footer__social-link:hover {
  background-color: var(--first-color);
  color: #fff;
  border-color: var(--first-color);
}

.footer__copy {
  display: block;
  margin-top: 2rem;
  color: var(--text-color-light);
  text-align: center;
  font-size: var(--smaller-font-size);
}

/*==================== FADE IN ANIMATION ====================*/
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
  will-change: opacity, visibility;
}

.fade-in.appear {
  opacity: 1;
  transform: none;
}

/*==================== 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;
  }

  .skills__box {
    column-gap: 1rem;
  }

  .projects__container, .video__container {
    grid-template-columns: 1fr;
  }
}

/* For medium devices */
@media screen and (min-width: 576px) {
  .about__info {
    grid-template-columns: repeat(2, 200px);
    justify-content: center;
  }
  .skills__container {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact__info {
    grid-template-columns: 300px;
    justify-content: center;
  }
  .contact__form {
    width: 360px;
    margin: 0 auto;
  }
}

@media screen and (min-width: 768px) {
  .nav {
    height: calc(3rem + 2.5rem);
    column-gap: 3rem;
  }
  .nav__toggle, 
  .nav__close {
    display: none;
  }
  .nav__list {
    display: flex;
    column-gap: 2rem;
  }
  .nav__menu {
    margin-left: auto;
  }

  .hero__container {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
  .hero__data {
    text-align: left;
  }
  .hero__buttons {
    justify-content: flex-start;
  }
  .hero__image-wrapper {
    order: 1; /* Move image to right */
    width: 350px;
    height: 350px;
  }
  
  .about__container {
    grid-template-columns: repeat(2, 1fr);
    align-items: center;
  }
  .about__description {
    text-align: left;
  }
  
  .projects__container, .video__container {
    grid-template-columns: repeat(2, max-content);
    justify-content: center;
  }
  
  .contact__container {
    grid-template-columns: repeat(2, 1fr);
    align-items: center;
  }
  .contact__info, .contact__form {
    width: 100%;
  }
}

/* For large devices */
@media screen and (min-width: 992px) {
  .container {
    margin-left: auto;
    margin-right: auto;
  }
  
  .section {
    padding: 8rem 0 2rem;
  }
  
  .projects__container {
    grid-template-columns: repeat(3, 300px);
  }
  
  .video__container {
    grid-template-columns: repeat(2, 400px);
  }
}