/* 
  Main CSS File for Mohammed Nihan's Portfolio
  Author: AI Assistant
  Description: Dark theme, responsive portfolio website
*/

/* ===== GLOBAL STYLES ===== */
:root {
  --dark-bg: #121212;
  --darker-bg: #0a0a0a;
  --light-bg: #1e1e1e;
  --text-primary: #f5f5f5;
  --text-secondary: #b3b3b3;
  --accent-color: #4db5ff;
  --accent-hover: #2a9df4;
  --card-bg: #1a1a1a;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Poppins', sans-serif;
  background-color: var(--dark-bg);
  color: var(--text-primary);
  line-height: 1.7;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

section {
  padding: 80px 0;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 50px;
  text-align: center;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: var(--accent-color);
}

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

ul {
  list-style: none;
}

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

.btn {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--accent-color);
  color: var(--text-primary);
  border-radius: 5px;
  font-weight: 500;
  transition: var(--transition);
  margin-right: 10px;
  margin-bottom: 10px;
  border: none;
  cursor: pointer;
}

.btn:hover {
  background-color: var(--accent-hover);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

/* ===== NAVBAR STYLES ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 15px 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

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

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-links a {
  font-weight: 500;
  transition: var(--transition);
}

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

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

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

/* ===== HERO SECTION ===== */
.hero {
  padding-top: 150px;
  padding-bottom: 100px;
  background-color: var(--darker-bg);
}

.hero-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.hero-text {
  flex: 1;
}

.hero-text h1 {
  font-size: 3.5rem;
  margin-bottom: 10px;
  color: var(--accent-color);
}

.hero-text h2 {
  font-size: 1.8rem;
  font-weight: 500;
  margin-bottom: 5px;
}

.hero-text p {
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.hero-bio {
  margin-bottom: 30px;
  font-size: 1.2rem;
}

.hero-bio .btn {
  margin-top: 15px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-buttons .btn {
  flex: 1;
  min-width: 120px;
  text-align: center;
  margin-right: 0;
  margin-bottom: 0;
  display: inline-block;
  position: relative;
  z-index: 9999;
  font-size: 1rem;
  padding: 12px 15px;
}

.hero-buttons .btn i {
  margin-right: 8px;
  font-size: 1.1rem;
}

.hero-image {
  flex: 1;
  max-width: 350px;
  border-radius: 50%;
  overflow: hidden;
  border: 5px solid var(--accent-color);
  box-shadow: 0 0 20px rgba(77, 181, 255, 0.3);
}

.hero-image img {
  width: 100%;
  height: auto;
  transition: var(--transition);
}

.hero-image img:hover {
  transform: scale(1.05);
}

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

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  font-size: 1.1rem;
}

/* ===== SKILLS SECTION ===== */
.skills-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.skill-category {
  background-color: var(--card-bg);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.skill-category:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.skill-category h3 {
  font-size: 1.5rem;
  margin-bottom: 20px;
  color: var(--accent-color);
  text-align: center;
}

.skill-items {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-item {
  background-color: var(--dark-bg);
  padding: 8px 15px;
  border-radius: 5px;
  font-size: 0.9rem;
  transition: var(--transition);
}

.skill-item:hover {
  background-color: var(--accent-color);
  transform: translateY(-3px);
}

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

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.project-card {
  background-color: var(--card-bg);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
  padding: 30px;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.project-card h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--accent-color);
}

.project-card p {
  margin-bottom: 20px;
  color: var(--text-secondary);
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.tech-stack span {
  background-color: var(--dark-bg);
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 0.8rem;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
}

/* ===== CONTACT SECTION ===== */
.contact-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.email {
  display: block;
  font-size: 1.5rem;
  margin: 20px 0;
  color: var(--accent-color);
  transition: var(--transition);
}

.email:hover {
  color: var(--accent-hover);
  transform: scale(1.05);
}

.social-links {
  margin-top: 30px;
}

.social-links p {
  margin: 15px 0;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 25px;
  background-color: var(--accent-color);
  border-radius: 5px;
  transition: var(--transition);
  margin-right: 10px;
  margin-bottom: 10px;
}

.social-btn:hover {
  background-color: var(--accent-hover);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.contact-content .social-btn {
  margin: 5px;
}

/* ===== FOOTER ===== */
footer {
  background-color: var(--darker-bg);
  padding: 30px 0;
  text-align: center;
}

/* ===== RESPONSIVE STYLES ===== */
@media screen and (max-width: 992px) {
  .hero-content {
    flex-direction: column-reverse;
    text-align: center;
  }
  
  .hero-image {
    margin-bottom: 30px;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .section-title {
    font-size: 2rem;
  }
}

@media screen and (max-width: 768px) {
  .hamburger {
    display: block;
  }
  
  .nav-links {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: var(--darker-bg);
    width: 100%;
    text-align: center;
    transition: var(--transition);
    padding: 20px 0;
    gap: 15px;
  }
  
  .nav-links.active {
    left: 0;
  }
  
  .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);
  }
  
  .hero-text h1 {
    font-size: 2.5rem;
  }
  
  .hero-text h2 {
    font-size: 1.5rem;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
}

@media screen and (max-width: 768px) and (min-width: 577px) {
  .hero-buttons .btn {
    flex: 1 1 45%;
    min-width: 45%;
    font-size: 1rem;
    padding: 12px 15px;
  }
  
  .social-btn {
    margin-right: 10px;
    margin-bottom: 15px;
  }
}

@media screen and (max-width: 576px) {
  section {
    padding: 60px 0;
  }
  
  .hero {
    padding-top: 120px;
  }
  
  .hero-text h1 {
    font-size: 2rem;
  }
  
  .hero-text h2 {
    font-size: 1.2rem;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  .email {
    font-size: 1.2rem;
  }
  
  .hero-bio .btn {
    width: 100%;
    margin-top: 15px;
  }
  
  .contact-content .btn {
    width: 100%;
  }
  
  .hero-buttons .btn {
    flex: 1 1 100%;
    min-width: 100%;
    font-size: 1rem;
    padding: 12px 15px;
  }
  
  .social-btn {
    width: 100%;
    margin-right: 0;
    margin-bottom: 15px;
    justify-content: center;
  }
}