* {
  /* Reset CSS */
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  /* General Style */
  background: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
}

/* End of General Style */

/* Variables */

:root {
  /* Primary Colors */
  --color-primary: #00adb5;
  --color-primary-dark: #005f64;
  --color-primary-light: #4f46e5;

  /* Backgrounds */
  --bg-main: #121212;
  --bg-secondary: #1f1f1f;
  --bg-card: rgba(255, 255, 255, 0.08);
  --bg-navbar: rgba(255, 255, 255, 0.08);
  --bg-secondary-light: rgba(73, 73, 73, 0.192);

  /* Text */
  --text-main: #ffffff;
  --text-secondary: #a1a1aa;
  --text-dark: #121212;
  --text-study: #f39c12;

  /* Borders */
  --border-light: rgba(255, 255, 255, 0.14);
  --border-dark: #2d2d2d;

  /* Effects */
  --shadow-main: 0 18px 50px rgba(0, 0, 0, 0.25);
  --shadow-card: 0 12px 28px rgba(0, 0, 0, 0.22);
}

/* Navbar */

#navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: var(--bg-navbar);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-main);
  backdrop-filter: blur(14px);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

.logo span {
  color: var(--color-primary);
}

#nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  transition: all 0.3s ease;
  text-align: center;
}

#nav-links li a, #nav-links button {
  display: inline-block;
  background: transparent;
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  border-radius: 5px;
  padding: 4px 10px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  text-transform: uppercase;
  margin-right: 10px;
  text-decoration: none;
}

#nav-links button {
  padding: 5px;
}

#nav-links li a:hover, #nav-links button:hover {
  color: var(--text-main);
  background-color: var(--color-primary);
  box-shadow: 0px 10px 10px rgba(0, 173, 181, 0.4);
  cursor: pointer;
  transform: scale(1.1);
}


/* End of Navbar */

/* Language Toggle */

#language-toggle {
  background: transparent;
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  padding: 5px 12px;
  border-radius: 5px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  text-transform: uppercase;
  margin-right: 10px;
}

#language-toggle:hover {
  background: var(--color-primary);
  color: var(--text-main);
  box-shadow: 0 0 12px rgba(0, 173, 181, 0.4);
}

#language-toggle:active {
  transform: scale(0.9);
}

/* End of Language Toggle */

/* Dark Mode Toggle */

#dark-mode-toggle {
  background: transparent;
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  padding: 5px 10px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s ease;
  text-transform: uppercase;
}

#dark-mode-toggle:hover {
  background: var(--color-primary);
  color: var(--text-main);
  box-shadow: 0 0 12px rgba(0, 173, 181, 0.4);
}

#dark-mode-toggle:active {
  transform: scale(0.9);
}

/* End of Navbar */

/* Progress-Bar */
.progress-container {
  width: 100%;
  height: 2px;
  background: transparent;
  position: absolute;
  bottom: 0;
  left: 0;
}

.progress-bar {
  height: 2px;
  background: var(--color-primary);
  width: 0%;
  transition: width 0.1s ease-out;
  box-shadow: 0 0 10px rgba(0, 173, 181, 0.5);
}

/* End of Progress Bar */

/* Hamburger menu */

#menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 22px;
  background: transparent;
  border: none;
  cursor: pointer;
}

#menu-toggle .bar {
  display: block;
  width: 100%;
  height: 3px;
  background: white;
  border-radius: 2px;
  transition:
    transform 0.25s ease,
    opacity 0.25s ease;
  transform-origin: center;
}

#menu-toggle.open .bar:nth-child(1) {
  transform: translateY(11px) rotate(45deg);
}

#menu-toggle.open .bar:nth-child(2) {
  opacity: 0;
}

#menu-toggle.open .bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* End of Hamburger Menu */

/* End of Navbar */

/* Hero Section */

header {
  height: 100dvh; /* Uses "dvh" the full viewport height */
  background: rgba(0, 0, 0, 0.7);
  background-size: cover;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('img/background.png');
  background-size: cover;
  background-position: center;
  z-index: -1;
  
  animation: expandirBackground 20s infinite alternate ease-in-out;
}

.hero-content {
  padding: 10px;
  margin: 120px 50px;
}

.hero-content h2 {
  font-size: 2rem;
}

.hero-content h1 span {
  color: var(--color-primary);
  font-size: 3.5rem;
}

.btn {
  display: inline-flex;
  margin-top: 20px;
  padding: 10px 30px;
  background: var(--color-primary);
  color: white;
  text-decoration: none;
  border-radius: 5px;
  transition: 0.3s ease;
}

.btn:hover {
  background-color: var(--color-primary-dark);
  transform: scale(1.05);
}

.btn:active {
  background-color: var(--color-primary);
  transform: scale(0.95);
}

#cursor {
  animation: blink 1s infinite;
}

.animar-entrada {
  opacity: 0;
  animation: fadeInUp 2s ease-out forwards;
  animation-delay: 0.5s;
}

/* arrow */

.scroll-arrow a{
  text-decoration: none;
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  cursor: pointer;
  animation: scroll-down 2s infinite;
  font-size: 2rem;
  color: var(--color-primary);
  text-shadow: 0 0 5px rgb(0, 0, 0);
}

/* End arrow */

/* End of Hero Section */

/* Sections */

section {
  width: 1000px;
  text-align: center;
  margin: auto;
  padding: 50px;
}

section h2 {
  text-align: center;
  margin-bottom: 40px;
  font-size: 2.5rem;
}

p {
  text-align: left;
}

/* End of Sections */

/* Skills Grid */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, 70px);
  gap: 50px;
  justify-content: center;
}

.skill-card {
  background: var(--bg-card);
  padding: 10px;
  text-align: center;
  border: 1px solid var(--border-light);
  border-bottom: 3px solid var(--color-primary);
  border-radius: 18px;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  transition: 0.2s ease;
  width: 70px;
}

.skill-card:hover {
  border-color: var(--color-primary);
  transform: scale(1.1);
}

.skill-card.study {
  /* Study card */
  border-color: var(--text-study);
}

/* End of Skills Card */

/* Projects */

.project-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.project-card {
  flex-direction: column;
  background: var(--bg-main);
  border: 1px solid var(--border-dark);
  border-radius: 12px;
  padding: 24px;
  transition:
    transform 0.2s ease,
    border-color 0.2s ease;
  display: flex;
  gap: 12px;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
  box-shadow: 0px 10px 10px var(--color-primary);
}

.project-card h3 {
  color: var(--text-main);
  font-size: 1.25rem;
  margin: 0;
}

.project-card p {
  color: var(--text-secondary);
  text-align: left;
  font-size: 0.95rem;
  line-height: 1.6;
}

.project-techs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-start;
}


.project-links {
  margin-top: auto;
  display: flex;
  gap: 15px;
}

.project-links a {
  display: inline-block;
  border: 1px solid var(--color-primary);
  border-radius: 5px;
  color: var(--color-primary);
  text-decoration: none;
  font-size: 0.9rem;
  margin: auto;
  padding: 8px;
  display: flex;
  transition: 0.3s ease;
}

.project-links a:hover {
  color: var(--text-main);
  background-color: var(--color-primary);
  box-shadow: 0px 10px 10px rgba(0, 173, 181, 0.4);
  transform: scale(1.1);
}

.project-links a:active {
  color: #818cf8;
  transform: scale(0.95);
}

/* End of Project Card */

/* Footer */

footer {
  text-align: center;
  padding: 20px;
  background: var(--bg-secondary);
  margin-top: 40px;
}

/* End of Common Style */

/* Light Mode Overrides */

body.light-mode {
  background: #f4f4f434;
  color: #252525;
}

body.light-mode h1 span {
  color: var(--color-primary);
  -webkit-text-stroke: 0.2px black;
  paint-order: stroke fill;
  text-shadow: #000000 2px 2px 10px;
}

body.light-mode #typing-text {
  color: var(--text-dark);
  font-weight: 400;
}

body.light-mode .btn {
  background: var(--color-primary);
  color: var(--text-main);
  box-shadow: #000000 2px 2px 10px;
}

body.light-mode #navbar {
  background: rgba(255, 255, 255, 0.164);
  border-color: rgba(59, 59, 59, 0.753);
}

body.light-mode #nav-links li a {
  color: var(--color-primary);
}

body.light-mode #nav-links li a:hover {
  color: var(--text-main);
}

body.light-mode #menu-toggle .bar {
  background: var(--text-dark);
}

body.light-mode .scroll-arrow span {
  border-color: var(--text-main);
}

body.light-mode #home {
  background: rgba(255, 255, 255, 0.479);
}

body.light-mode .skill-card {
  background: rgba(255, 255, 255, 0.8);
  border-color: #727272;
  color: var(--text-dark);
}

body.light-mode .skill-card.study {
  border-color: #ff9900;
}

body.light-mode .project-card {
  background: var(--text-main);
  border-color: var(--color-primary-dark);
  color: var(--text-dark);
}

body.light-mode .project-card:hover{
  transform: translateY(-4px);
  border-color: var(--bg-secondary);
  box-shadow: 0px 10px 10px var(--border-dark);
}

body.light-mode .project-card h3 {
  color: var(--text-dark);
}

body.light-mode .project-card p {
  color: #333333;
}

body.light-mode .project-links a {
  border: 1px solid var(--border-dark);
  border-radius: 5px;
  color: var(--text-dark);
  text-decoration: none;
  font-size: 0.9rem;
  margin: auto;
  padding: 8px;
  display: flex;
  transition: 0.3s ease;
}

body.light-mode .project-links a:hover {
  color: var(--text-main);
  background-color: var(--color-primary);
  border: 1px solid var(--color-primary);
  box-shadow: #000000 2px 2px 10px;
}

body.light-mode footer {
  background: #e0e0e0;
  color: var(--text-dark);
}

/* End of Light Mode Overrides */

/* Fade movement animation */


@keyframes scroll-down { /* Scroll down animation */
  0%, 100% {
    transform: translate(-50%, 0);
  }
  50% {
    opacity: 1;
    transform: translate(-50%, 10px);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* End Animation */

/* Background image animation definition */

@keyframes expandirBackground {
  0% {
    transform: scale(1);
  }
  100% {
    transform: scale(1.1);
  }
}

@keyframes blink {
  0%,
  50% {
    opacity: 1;
  }

  51%,
  100% {
    opacity: 0;
  }
}

/* End Animation */

/* Responsive */

@media (max-width: 1000px) {
  section {
    width: 90%;
    padding: 50px 30px;
  }

  .surnameTwo {
    display: none;
  }
}

@media (max-width: 780px) {
  #home .span .surname {
    display: none;
  }

  .hero-content {
    margin: 120px 10px;
  }

  .surname, .surnameTwo {
    display: none;
  }

  #menu-toggle {
    display: flex;
  }

  #nav-links {
    position: absolute;
    top: 59px;
    right: -2px;
    width: 150px;
    background: rgba(31, 31, 31, 0.97);
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    padding: 20px;
    gap: 10px;
    transform: translateX(100%);
    transition: transform 0.25s ease;
    z-index: -1; /* Ensures the menu slides behind the navbar top bar */
  }

  #nav-links button {
    margin: 0;
  }

  #nav-links.show {
    transform: translateX(0);
  }

  #nav-links li {
    width: 100%;
  }

  #nav-links li a {
    display: block;
    width: 100%;
    padding: 10px 0;
  }

  body.light-mode #nav-links {
    background: rgba(233, 233, 233, 0.97);
  }
}

@media (max-height: 450px) {
  .hero-content {
    margin: 60px 10px;
  }

  .surname {
    display: none;
  }
}

/* End Responsive */
/* End Css */