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

/* Light-mode Colours */
:root {
   --primary-bg: white;
   --secondary-bg: #f3f3f3;
   --card-bg: #f9f9f9; /* Card background */
   --header-bg: #8f0000; /* Navy-ish header background */
   --text-color: #2c3e50; /* Dark grayish-blue text */
   --accent-color: #a01919; /* blue accent color */
   --button-bg: #a01919;
   --button-hover-bg: #ab0505;
}

/* Dark-mode Colours */
body.dark-mode {
   --primary-bg: #121212;
   --secondary-bg: #1e1e1e;
   --card-bg: #2c2c2c;
   --header-bg: #333;
   --text-color: #e0e0e0;
   --accent-color: #f70707;
   --button-bg: #f70707;
   --button-hover-bg: #f70707;
}

/* Body styles */
body {
   font-family: "Verdana", sans-serif;
   background: var(--primary-bg);
   color: var(--text-color);
   padding-top: 100px;
   line-height: 1.6;
   transition: background 0.3s, color 0.3s;
}

section ul {
   list-style-position: outside;
   padding-left: 2em;
}

section li {
   padding-left: 0.5em;
}

/* Header styles */
header {
   background: var(--header-bg);
   color: #fff;
   position: fixed;
   top: 0;
   width: 100%;
   z-index: 1000;
   box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.header-container {
   max-width: 1100px;
   margin: 0 auto;
   padding: 10px 20px;
   display: flex;
   justify-content: space-between;
   align-items: center;
}

.header-left h1 {
   font-size: 1.8rem;
   font-weight: 600;
}

.header-right {
   display: flex;
   align-items: center;
}

/* Toggle Buttons */
.menu-toggle {
   background: transparent;
   border: none;
   color: #fff;
   font-size: 1.5rem;
   cursor: pointer;
   margin-left: 10px;
   display: none;
}

.dark-mode-toggle {
   background: transparent;
   border: none;
   color: #fff;
   font-size: 1.5rem;
   cursor: pointer;
   margin-left: 10px;
   display: block;
}

/* Navigation styles */
nav {
   margin-left: 20px;
}

nav ul {
   list-style: none;
   display: flex;
   gap: 20px;
}

nav ul li a {
   text-decoration: none;
   color: #fff;
   font-weight: 600;
   transition: color 0.3s;
}

nav ul li a:hover {
   color: var(--accent-color);
}

/* Hero Section */
.hero {
   background: var(--secondary-bg);
   padding: 60px 20px;
   border-radius: 8px;
   margin-bottom: 30px;
   box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.hero-content {
   max-width: 900px;
   margin: 0 auto;
   display: flex;
   align-items: center;
   gap: 40px;
}

.hero-photo {
   width: 200px;
   height: 200px;
   object-fit: cover;
   border-radius: 8px;
}

.hero-text {
   flex: 1;
}

.hero-text h2 {
   font-size: 2rem;
   margin-bottom: 10px;
}

.hero-text p {
   font-size: 1.2rem;
   margin-bottom: 20px;
}

/* Main sections */
main {
   max-width: 1100px;
   margin: 0 auto;
   padding: 0 20px;
}

section {
   background: var(--secondary-bg);
   padding: 40px;
   margin-bottom: 30px;
   border-radius: 8px;
   box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
   transition: transform 0.3s;
   scroll-margin-top: 40px;
}

section h2 {
   font-size: 1.8rem;
   margin-bottom: 20px;
   color: var(--accent-color);
   border-bottom: 2px solid var(--accent-color);
   display: inline-block;
   padding-bottom: 5px;
}

section h3 {
   font-size: 1.2rem;
   margin-bottom: 10px;
   color: var(--accent-color);
   border-bottom: 2px solid var(--accent-color);
   display: inline-block;
   padding-bottom: 2px;
   padding-top: 20px;
}

/* Experience & Education Cards */
.experience-cards,
.education-cards {
   display: flex;
   flex-wrap: wrap;
   gap: 20px;
}

.experience-card,
.education-card {
   background: var(--card-bg);
   border-left: 4px solid var(--accent-color);
   padding: 20px;
   border-radius: 5px;
   flex: 1 1 calc(50% - 20px);
   transition: transform 0.3s;
}

.experience-card:hover,
.education-card:hover {
   transform: translateX(10px);
}

/* Projects Section */
.project-cards {
   display: flex;
   flex-wrap: wrap;
   gap: 20px;
}

.project-card {
   background: var(--card-bg);
   border-radius: 8px;
   box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
   overflow: hidden;
   flex: 1 1 calc(50% - 20px);
   transition: transform 0.3s;
}

.project-card:hover {
   transform: translateY(-3px);
}

.project-card img {
   width: 100%;
   height: auto;
   display: block;
}

.project-card h3 {
   padding: 10px;
   font-size: 1.5rem;
}

.project-card p {
   padding: 0 10px 10px;
}

.project-card a.button {
   margin: 10px;
}

/* Contact Section */
.contact-container {
   display: flex;
   flex-direction: column;
   gap: 20px;
   align-items: start;
}

.contact-container p a {
   color: var(--accent-color);
   text-decoration: none;
}

.contact-container p a:hover {
   text-decoration: underline;
}

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

a:hover {
   color: var(--button-hover-bg);
   text-decoration: underline;
}

/* Social Media */
.social-media {
   display: flex;
   gap: 15px;
   align-items: center;
   font-size: 1.5rem;
}

/* Button styles */
.button {
   background-color: var(--button-bg);
   color: #fff;
   padding: 10px 20px;
   border: none;
   text-decoration: none;
   display: inline-block;
   cursor: pointer;
   transition: background-color 0.3s, transform 0.2s;
   border-radius: 4px;
}

a.button:hover{
   color: var(--primary-bg);
   text-decoration: underline;
}

.button:hover {
   background-color: var(--button-hover-bg);
   transform: scale(1.05);
}

/* Footer styles */
footer {
   background: var(--header-bg);
   color: #fff;
   padding: 20px;
   margin-top: 30px;
   text-align: center;
}

.footer-bottom {
   margin-top: 0;
}

/* Skill tags */
.skill-tags {
   display: flex;
   flex-wrap: wrap;
   gap: 8px;
   margin-top: 15px;
}

.tag {
   background-color: #e3e0ff;
   color: #5338ca;
   padding: 4px 12px;
   border-radius: 16px;
   font-size: 0.85rem;
   font-weight: 600;
   border: 1px solid #c7d2fe;
   transition: transform 0.2s ease;
}

/* Responsive styles */
@media (max-width: 768px) {
   .header-container {
      flex-direction: row;
      justify-content: space-between;
   }
   .menu-toggle,
   .dark-mode-toggle {
      display: block; /* Show both toggles on mobile */
   }
   nav {
      position: fixed;
      top: 60px;
      right: -250px;
      width: 250px;
      background: var(--header-bg);
      height: 100%;
      transition: right 0.3s;
      padding: 20px;
   }
   nav.active {
      right: 0;
   }
   nav ul {
      flex-direction: column;
      gap: 15px;
   }

   /* Hero layout stacks on smaller screens */
   .hero-content {
      flex-direction: column;
      gap: 20px;
   }
   .hero-photo {
      margin: 0 auto;
   }

   /* Stack cards */
   .experience-cards,
   .education-cards,
   .project-cards {
      flex-direction: column;
   }
}