/* Global Styles */
:root {
  --dark-bg: #000000;
  --darker-bg: #000000;
  --card-bg: #111111;
  --text: #ffffff;
  --text-dim: #aaaaaa;
  --border-color: #333333;
  --card-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--dark-bg);
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  cursor: default;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 2;
}

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

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.9);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
}

header.scrolled {
  padding: 0.7rem 0;
  background: rgba(0, 0, 0, 0.95);
}

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

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
}

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

.nav-links li {
  margin-left: 2.5rem;
}

.nav-links a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
}

.nav-links a:hover {
  color: var(--text-dim);
}

/* Mobile navigation */
.nav-toggle {
  display: none;
  cursor: pointer;
}

/* Sections */
section {
  padding: 100px 0;
  position: relative;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
}

.hero .container {
  position: relative;
  z-index: 2;
  padding-top: 80px; /* Account for fixed header */
}

.hero h1 {
  font-size: 3.5rem;
  line-height: 1.1;
  margin-bottom: 1.8rem;
  letter-spacing: -1px;
}

.hero p {
  font-size: 1.5rem;
  color: var(--text-dim);
  margin-bottom: 3rem;
}

.accent {
  color: var(--text);
  display: inline-block;
  border-bottom: 2px solid var(--text);
  padding-bottom: 2px;
}

/* Section Titles */
.section-title {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  text-align: center;
  position: relative;
  letter-spacing: -0.5px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--text);
}

/* About Section */
.about-content {
  padding: 2.5rem;
  background: var(--card-bg);
  border-radius: 8px;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
  position: relative;
}

.about-text p {
  margin-bottom: 1.8rem;
  color: var(--text-dim);
  font-size: 1.15rem;
  line-height: 1.8;
}

.about-text p:last-child {
  margin-bottom: 0;
}

/* Skills Section */
.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 2.5rem;
}

.skill-card {
  background: var(--card-bg);
  border-radius: 8px;
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
  position: relative;
}

.icon-3d {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  color: var(--text);
  display: inline-block;
}

.skill-card h3 {
  font-size: 1.4rem;
  margin-bottom: 1.2rem;
  letter-spacing: 0.5px;
}

.skill-card p {
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2.5rem;
}

.project-card {
  background: var(--card-bg);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.project-info {
  padding: 1.8rem;
  position: relative;
  z-index: 1;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.project-info h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  letter-spacing: 0.5px;
}

.project-info p {
  color: var(--text-dim);
  margin-bottom: 1.2rem;
  font-size: 0.95rem;
  line-height: 1.7;
  flex-grow: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 1.8rem;
  gap: 0.7rem;
}

.tech-tag {
  background: var(--card-bg);
  color: var(--text-dim);
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  font-size: 0.8rem;
  border: 1px solid var(--border-color);
}

.project-links {
  display: flex;
  gap: 1.2rem;
  margin-top: auto;
}

/* Buttons */
.btn, .btn-small {
  display: inline-block;
  background: var(--text);
  color: var(--dark-bg);
  text-decoration: none;
  padding: 0.9rem 2.2rem;
  border-radius: 4px;
  font-weight: 600;
  letter-spacing: 1px;
  border: none;
  cursor: pointer;
  text-transform: uppercase;
  transition: background 0.3s;
}

.btn-small {
  padding: 0.6rem 1.4rem;
  font-size: 0.85rem;
}

.btn:hover, .btn-small:hover {
  background: #ccc;
}

/* Contact Section */
.contact-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
}

.contact-info, .contact-form {
  background: var(--card-bg);
  border-radius: 8px;
  padding: 2.5rem;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
  position: relative;
}

.contact-item {
  display: flex;
  align-items: center;
  margin-bottom: 2rem;
}

.contact-item i {
  margin-right: 1.5rem;
  font-size: 1.7rem;
  color: var(--text);
}

.contact-item p {
  font-size: 1rem;
  word-break: break-all;
}

.social-links {
  display: flex;
  justify-content: center;
  margin-top: 2.5rem;
  gap: 2rem;
  flex-wrap: wrap;
}

.social-links a {
  font-size: 2rem;
  color: var(--text);
}

.form-group {
  margin-bottom: 1.8rem;
}

input, textarea {
  width: 100%;
  padding: 1.2rem;
  background: var(--darker-bg);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
}

input::placeholder, textarea::placeholder {
  color: var(--text-dim);
  opacity: 0.6;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--text);
}

textarea {
  min-height: 170px;
  resize: vertical;
}

/* Footer */
footer {
  background: var(--darker-bg);
  padding: 2.5rem 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
  position: relative;
}

footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  z-index: 1;
  flex-wrap: wrap;
}

footer p {
  color: var(--text-dim);
  font-size: 1rem;
}

.back-to-top {
  background: var(--card-bg);
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border-color);
}

/* Media Queries for Responsiveness */
@media screen and (max-width: 1024px) {
  .section-title {
    font-size: 2.2rem;
  }
  
  .hero h1 {
    font-size: 3rem;
  }
  
  section {
    padding: 80px 0;
  }
}

@media screen and (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.95);
    padding: 1rem 0;
    flex-direction: column;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links li {
    margin: 1rem 0;
  }
  
  .hero h1 {
    font-size: 2.8rem;
  }

  .hero p {
    font-size: 1.3rem;
  }
  
  .skills-container,
  .projects-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
  
  .about-content,
  .contact-info,
  .contact-form {
    padding: 2rem;
  }
  
  footer .container {
    flex-direction: column;
    gap: 1.5rem;
    justify-content: center;
  }
}

@media screen and (max-width: 480px) {
  .container {
    width: 95%;
    padding: 0 10px;
  }
  
  .hero {
    text-align: left;
  }
  
  .hero h1 {
    font-size: 2.2rem;
  }

  .hero p {
    font-size: 1.1rem;
  }

  .section-title {
    font-size: 1.9rem;
  }
  
  .skill-card,
  .project-card,
  .contact-info,
  .contact-form {
    padding: 1.5rem;
  }
  
  .section-title::after {
    width: 40px;
  }
  
  .project-links {
    flex-direction: column;
    gap: 0.8rem;
  }
  
  .btn-small {
    text-align: center;
  }
  
  .social-links {
    gap: 1.5rem;
  }
  
  section {
    padding: 60px 0;
  }
  
  .contact-item {
    flex-direction: column;
    text-align: center;
    gap: 0.5rem;
  }
  
  .contact-item i {
    margin-right: 0;
    margin-bottom: 0.5rem;
  }
}

@media screen and (max-width: 320px) {
  .logo {
    font-size: 1.5rem;
  }
  
  .hero h1 {
    font-size: 1.9rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .btn {
    padding: 0.8rem 1.5rem;
    font-size: 0.9rem;
  }
}

/* Custom Selection */
::selection {
  background: #333333;
  color: var(--text);
}