/* Main Styles for Portfolio Website - Dark Theme */

/* ===== GLOBAL STYLES ===== */
:root {
  --primary-color: #121212;
  --secondary-color: #6C63FF;
  --accent-color: #00B0FF;
  --neutral-color: #333333;
  --text-color: #E0E0E0;
  --white-color: #FFFFFF;
  --dark-gray: #1E1E1E;
  --medium-gray: #2D2D2D;
  --light-gray: #3D3D3D;
  --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  --transition: all 0.3s ease-in-out;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Open Sans', sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--primary-color);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--white-color);
}

h1 {
  font-size: 3rem;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  position: relative;
}

h2:after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -10px;
  width: 50px;
  height: 3px;
  background-color: var(--secondary-color);
}

h3 {
  font-size: 1.75rem;
}

p {
  margin-bottom: 1.5rem;
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--secondary-color);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2:after {
  left: 50%;
  transform: translateX(-50%);
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: 5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: var(--secondary-color);
  color: var(--white-color);
}

.btn-primary:hover {
  background-color: var(--accent-color);
  color: var(--white-color);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(108, 99, 255, 0.4);
}

.btn-secondary {
  background-color: var(--accent-color);
  color: var(--white-color);
}

.btn-secondary:hover {
  background-color: var(--secondary-color);
  color: var(--white-color);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 176, 255, 0.4);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--secondary-color);
  color: var(--secondary-color);
}

.btn-outline:hover {
  background-color: var(--secondary-color);
  color: var(--white-color);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(108, 99, 255, 0.4);
}

.text-center {
  text-align: center;
}

.mb-1 {
  margin-bottom: 1rem;
}

.mb-2 {
  margin-bottom: 2rem;
}

.mb-3 {
  margin-bottom: 3rem;
}

.mt-1 {
  margin-top: 1rem;
}

.mt-2 {
  margin-top: 2rem;
}

.mt-3 {
  margin-top: 3rem;
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(18, 18, 18, 0.95);
  box-shadow: var(--box-shadow);
  z-index: 1000;
  padding: 1rem 0;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.header.scrolled {
  padding: 0.5rem 0;
  background-color: rgba(18, 18, 18, 0.98);
}

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

.logo {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white-color);
}

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

.nav-menu {
  display: flex;
  list-style: none;
}

.nav-item {
  margin-left: 2rem;
}

.nav-link {
  font-weight: 600;
  position: relative;
  color: var(--text-color);
}

.nav-link:after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 0;
  height: 2px;
  background-color: var(--secondary-color);
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--white-color);
}

.nav-link:hover:after,
.nav-link.active:after {
  width: 100%;
}

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

.hamburger {
  display: none;
  cursor: pointer;
}

.bar {
  display: block;
  width: 25px;
  height: 3px;
  margin: 5px auto;
  background-color: var(--white-color);
  transition: var(--transition);
}

/* ===== HERO SECTION ===== */
.hero {
  height: 100vh;
  background: linear-gradient(rgba(18, 18, 18, 0.8), rgba(18, 18, 18, 0.9)), url('../images/hero-bg-dark.jpg');
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  text-align: center;
  color: var(--white-color);
  padding-top: 80px;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  color: var(--white-color);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero h2 {
  font-size: 2rem;
  font-weight: 400;
  margin-bottom: 2rem;
  color: var(--text-color);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero h2:after {
  display: none;
}

.hero-btns {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.hero-btns .btn {
  margin: 0.5rem;
}

/* ===== ABOUT SECTION ===== */
.about {
  background-color: var(--dark-gray);
}

.about-content {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2rem;
}

.about-img {
  flex: 1;
  min-width: 300px;
}

.about-img img {
  width: 100%;
  border-radius: 10px;
  box-shadow: var(--box-shadow);
  border: 3px solid var(--medium-gray);
}

.about-text {
  flex: 2;
  min-width: 300px;
}

.skills {
  margin-top: 2rem;
}

.skill-item {
  margin-bottom: 1.5rem;
}

.skill-name {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  color: var(--text-color);
}

.skill-bar {
  height: 10px;
  background-color: var(--medium-gray);
  border-radius: 5px;
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
  border-radius: 5px;
}

/* ===== PROJECTS SECTION ===== */
.projects {
  background-color: var(--primary-color);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.project-card {
  background-color: var(--dark-gray);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  border: 1px solid var(--medium-gray);
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
  border-color: var(--secondary-color);
}

.project-img {
  height: 200px;
  overflow: hidden;
}

.project-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.project-card:hover .project-img img {
  transform: scale(1.1);
}

.project-content {
  padding: 1.5rem;
}

.project-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--white-color);
}

.project-description {
  margin-bottom: 1rem;
  color: var(--text-color);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tech-badge {
  padding: 0.25rem 0.5rem;
  background-color: var(--medium-gray);
  border-radius: 5px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-color);
}

.project-links {
  display: flex;
  gap: 1rem;
}

/* ===== EXPERIENCE SECTION ===== */
.experience {
  background-color: var(--dark-gray);
}

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::after {
  content: '';
  position: absolute;
  width: 2px;
  background-color: var(--secondary-color);
  top: 0;
  bottom: 0;
  left: 50%;
  margin-left: -1px;
}

.timeline-item {
  padding: 10px 40px;
  position: relative;
  width: 50%;
  box-sizing: border-box;
}

.timeline-item:nth-child(odd) {
  left: 0;
}

.timeline-item:nth-child(even) {
  left: 50%;
}

.timeline-item::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  background-color: var(--dark-gray);
  border: 4px solid var(--secondary-color);
  border-radius: 50%;
  top: 15px;
  z-index: 1;
}

.timeline-item:nth-child(odd)::after {
  right: -10px;
}

.timeline-item:nth-child(even)::after {
  left: -10px;
}

.timeline-content {
  padding: 1.5rem;
  background-color: var(--medium-gray);
  border-radius: 10px;
  box-shadow: var(--box-shadow);
}

.timeline-date {
  color: var(--accent-color);
  font-weight: 600;
}

.timeline-title {
  margin: 0.5rem 0;
  color: var(--white-color);
}

.timeline-company {
  color: var(--text-color);
  font-style: italic;
  margin-bottom: 1rem;
}

/* ===== EDUCATION SECTION ===== */
.education {
  background-color: var(--primary-color);
}

.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.education-item {
  background-color: var(--dark-gray);
  padding: 1.5rem;
  border-radius: 10px;
  box-shadow: var(--box-shadow);
  border: 1px solid var(--medium-gray);
  transition: var(--transition);
}

.education-item:hover {
  transform: translateY(-5px);
  border-color: var(--secondary-color);
}

.education-year {
  color: var(--accent-color);
  font-weight: 600;
}

.education-degree {
  margin: 0.5rem 0;
  color: var(--white-color);
}

.education-institution {
  color: var(--text-color);
  font-style: italic;
}

/* ===== CURRICULUM VITAE SECTION ===== */
.cv {
  background-color: var(--dark-gray);
  text-align: center;
}

.cv-content {
  max-width: 800px;
  margin: 0 auto;
}

.cv-description {
  margin-bottom: 2rem;
}

.cv-downloads {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

.cv-download-card {
  background-color: var(--medium-gray);
  border-radius: 10px;
  padding: 2rem;
  width: 300px;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  border: 1px solid var(--light-gray);
}

.cv-download-card:hover {
  transform: translateY(-5px);
  border-color: var(--secondary-color);
}

.cv-download-icon {
  font-size: 3rem;
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.cv-download-title {
  margin-bottom: 1rem;
  color: var(--white-color);
}

.cv-download-description {
  color: var(--text-color);
  margin-bottom: 1.5rem;
}

/* ===== MEDIA SECTION ===== */
.media {
  background-color: var(--primary-color);
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.media-item {
  background-color: var(--dark-gray);
  padding: 1.5rem;
  border-radius: 10px;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  border: 1px solid var(--medium-gray);
}

.media-item:hover {
  transform: translateY(-5px);
  border-color: var(--secondary-color);
}

.media-type {
  color: var(--accent-color);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.8rem;
  margin-bottom: 0.5rem;
}

.media-title {
  margin-bottom: 0.5rem;
  color: var(--white-color);
}

.media-description {
  color: var(--text-color);
  margin-bottom: 1rem;
}

/* ===== CONTACT SECTION ===== */
.contact {
  background-color: var(--dark-gray);
}

.contact-content {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}

.contact-info {
  flex: 1;
  min-width: 300px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.contact-icon {
  margin-right: 1rem;
  color: var(--secondary-color);
  font-size: 1.5rem;
}

.contact-text h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--white-color);
}

.contact-form {
  flex: 1;
  min-width: 300px;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-control {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid var(--medium-gray);
  border-radius: 5px;
  font-family: 'Open Sans', sans-serif;
  font-size: 1rem;
  transition: var(--transition);
  background-color: var(--medium-gray);
  color: var(--text-color);
}

.form-control:focus {
  outline: none;
  border-color: var(--secondary-color);
}

textarea.form-control {
  resize: vertical;
  min-height: 150px;
}

/* ===== FOOTER ===== */
.footer {
  background-color: var(--primary-color);
  color: var(--text-color);
  padding: 3rem 0;
  border-top: 1px solid var(--medium-gray);
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
}

.footer-logo {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white-color);
  margin-bottom: 1rem;
}

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

.footer-links h3 {
  color: var(--white-color);
  margin-bottom: 1.5rem;
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--text-color);
}

.footer-links a:hover {
  color: var(--secondary-color);
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--medium-gray);
  border-radius: 50%;
  color: var(--text-color);
  transition: var(--transition);
}

.social-link:hover {
  background-color: var(--secondary-color);
  color: var(--white-color);
}

.footer-bottom {
  margin-top: 3rem;
  text-align: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--medium-gray);
}

.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  background-color: var(--secondary-color);
  color: var(--white-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

/* ===== RESPONSIVE STYLES ===== */
@media screen and (max-width: 992px) {
  html {
    font-size: 15px;
  }
  
  .timeline::after {
    left: 31px;
  }
  
  .timeline-item {
    width: 100%;
    padding-left: 70px;
    padding-right: 25px;
  }
  
  .timeline-item:nth-child(even) {
    left: 0;
  }
  
  .timeline-item::after {
    left: 21px;
  }
  
  .hero-btns {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-btns .btn {
    width: 200px;
    margin: 0.5rem;
  }
}

@media screen and (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  .hamburger {
    display: block;
  }
  
  .hamburger.active .bar:nth-child(2) {
    opacity: 0;
  }
  
  .hamburger.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .hamburger.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: var(--primary-color);
    width: 100%;
    text-align: center;
    transition: var(--transition);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.3);
    padding: 2rem 0;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-item {
    margin: 1.5rem 0;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero h2 {
    font-size: 1.5rem;
  }
  
  .cv-downloads {
    flex-direction: column;
    align-items: center;
  }
}

@media screen and (max-width: 576px) {
  .section {
    padding: 3rem 0;
  }
  
  .hero-btns .btn {
    display: block;
    width: 80%;
    margin: 0.5rem auto;
  }
  
  .about-img {
    margin-bottom: 2rem;
  }
  
  .projects-grid,
  .education-grid,
  .media-grid {
    grid-template-columns: 1fr;
  }
}