/*CSS CUSTOM PROPERTIES (VARIABLES)*/

:root {
  --bg-primary: #f8f9fa;
  --bg-secondary: #ffffff;
  --text-primary: #212529;
  --text-secondary: #4b5563;
  --accent-color: #7c3aed;
  --nav-bg: #ffffff;
  --button-outline: #6c757d;

  --gradient-purple: linear-gradient(135deg, #c084fc, #e879f9, #f0abfc);
  --gradient-purple-short: linear-gradient(135deg, #c084fc, #e879f9);

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 3.5rem;

  --radius-sm: 0.5rem;
  --radius-full: 50%;

  --transition-base: 0.3s ease;

  --shadow-purple: 0 10px 25px rgba(192, 132, 252, 0.3);
}

/*DARK THEME OVERRIDES*/

[data-theme="dark"] {
  --bg-primary: #1a1d29;
  --bg-secondary: #252938;
  --text-primary: #ffffff;
  --text-secondary: #e5e7eb;
  --accent-color: #a78bfa;
  --nav-bg: #252938;
  --button-outline: #ffffff;
}

[data-theme="dark"] .details-heading {
  color: #a78bfa;
}

[data-theme="dark"] .features-list li::before {
  color: #a78bfa;
}

[data-theme="dark"] .features-list strong {
  color: #a78bfa;
}

[data-theme="dark"] .tag {
  background: #3b1f5c;
  color: #e9d5ff;
}

[data-theme="dark"] .tag:hover {
  background: #4c1d95;
  color: #f3e8ff;
}

[data-theme="light"] .project-details-content {
  background: rgba(0, 0, 0, 0.02);
  border-left-color: #8e44ad;
}

/*RESET & BASE STYLES*/

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  font-family: "Roboto", sans-serif;
  font-size: var(--font-size-base);
  line-height: 1.6;
  margin: 0;
  min-height: 100vh;
  padding: 0;
  transition: background-color var(--transition-base);
}

main {
  flex: 1;
  padding: var(--spacing-xl);
}

/*TYPOGRAPHY*/

h1,
h2,
h3 {
  font-family: "DM Serif Display", serif;
  line-height: 1.2;
}

h1 {
  font-size: var(--font-size-3xl);
  font-weight: 400;
  margin-bottom: var(--spacing-xs);
}

h2 {
  font-size: var(--font-size-2xl);
}

.about-h2-size {
  font-size: var(--font-size-xl);
}

.subtitle {
  font-size: var(--font-size-xl);
  font-weight: 500;
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
  opacity: 0.7;
  text-align: center;
}

/*ACCESSIBILITY - FOCUS STATES*/

.skip-link {
  background: #000000;
  color: #ffffff;
  left: 0;
  padding: 8px;
  position: absolute;
  text-decoration: none;
  top: -40px;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}

a:focus,
button:focus,
.nav-link:focus {
  outline: 3px solid #c084fc;
  outline-offset: 2px;
}

a:focus:not(:focus-visible),
button:focus:not(:focus-visible) {
  outline: none;
}

.btn-learn-more:focus {
  outline: 3px solid #7c3aed;
  outline-offset: 2px;
}

@media (prefers-contrast: high) {
  .gradient-text {
    background: none;
    -webkit-text-fill-color: currentColor;
    color: #c084fc;
  }
}

/*ANIMATIONS*/

@keyframes gradientShift {
  0%,
  100% {
    background-position: 0% center;
  }
  50% {
    background-position: 100% center;
  }
}

@keyframes bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-0.9375rem);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/*NAVIGATION*/

.navbar {
  background-color: var(--nav-bg);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  padding: var(--spacing-sm) var(--spacing-lg);
  transition: background-color var(--transition-base);
}

.navbar-brand {
  font-family: "DM Serif Display", serif;
  font-size: var(--font-size-xl);
  font-weight: bold;
  background: var(--gradient-purple-short);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-decoration: none;
}

.navbar-nav .nav-link {
  color: var(--text-primary);
  margin: 0 var(--spacing-sm);
  font-weight: 500;
  transition: color var(--transition-base);
  position: relative;
}

.navbar-nav .nav-link:hover {
  color: #c084fc;
}

.navbar-nav .nav-link.active {
  color: #c084fc;
  font-weight: 600;
}

.nav-link::after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 50%;
  background: var(--gradient-purple-short);
  transition: width var(--transition-base, left var(--transition-base));
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
  left: 0;
  width: 100%;
}

/*THEME TOGGLE BUTTON*/

.theme-toggle {
  align-items: center;
  background: none;
  border: 2px solid var(--button-outline);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  height: 2.5rem;
  justify-content: center;
  transition: all var(--transition-base);
  width: 2.5rem;
}

.theme-toggle:hover {
  background: var(--gradient-purple-short);
  border-color: transparent;
  transform: rotate(15deg);
}

.theme-toggle i {
  font-size: 1.2rem;
}

/*BUTTONS*/

.btn-primary-custom,
.btn-secondary-custom {
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-block;
  padding: 0.75rem 1.875rem;
  font-size: var(--font-size-base);
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-base);
}

.btn-primary-custom i,
.btn-secondary-custom i {
  margin-right: 0.5rem;
}

.btn-primary-custom {
  background: var(--gradient-purple-short);
  border-color: transparent;
  color: #ffffff;
}

.btn-primary-custom:hover {
  box-shadow: var(--shadow-purple);
  transform: translateY(-2px);
}

.btn-secondary-custom {
  background: transparent;
  border-color: var(--button-outline);
  color: var(--text-primary);
}

.btn-secondary-custom:hover {
  background: var(--bg-secondary);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  justify-content: center;
}

.btn-learn-more {
  align-items: center;
  background: transparent;
  border: 2px solid var(--accent-color, #7c3aed);
  border-radius: 8px;
  color: var(--accent-color, #7c3aed);
  cursor: pointer;
  display: inline-flex;
  font-family: "Roboto", sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  gap: 0.5rem;
  margin: 1rem 0;
  padding: 0.6rem 1.25rem;
  transition: all 0.3 ease;
}

.btn-learn-more:hover {
  background: var(--accent-color, #7c3aed);
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-learn-more:active {
  transform: translateY(0);
}

.btn-learn-more .btn-icon {
  font-size: 0.85rem;
  transition: transform 0.3s ease;
}

.btn-learn-more[aria-expanded="true"] .btn-icon {
  transform: rotate(180deg);
}

/*HERO SECTION*/

.hero-section {
  align-items: center;
  display: flex;
  min-height: calc(100svh - 76px);
  padding: var(--spacing-lg) 0;
}

.hero-content h1 {
  font-family: "DM Serif Display", serif;
  font-size: var(--font-size-3xl);
  font-weight: 400;
  margin-bottom: var(--spacing-xs);
}

.hero-content h2 {
  font-family: "DM Serif Display", serif;
  font-size: var(--font-size-2xl);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.hero-content p,
.about-paragraphs p,
.project-description {
  max-width: 65ch;
}

.hero-content p {
  font-size: var(--font-size-lg);
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  max-width: 31.25rem;
}

.gradient-text {
  background: var(--gradient-purple);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% auto;
  animation: gradientShift 3s ease-in-out infinite;
  /*Fallback for browsers that dont support background-clip*/
  color: #c084fc;
}

/*PROFILE IMAGE*/

.profile-image-container {
  align-items: center;
  display: flex;
  justify-content: center;
}

.profile-image {
  animation: bounce 3s ease-in-out infinite;
  background: var(--gradient-purple-short);
  border: 4px solid transparent;
  border-radius: var(--radius-full);
  box-shadow: 0 0 0 0.5rem rgba(192, 132, 252, 0.3);
  height: 21.875rem;
  object-fit: cover;
  padding: 4px;
  width: 21.875rem;
}

/*ABOUT SECTION*/

.about-section {
  margin: var(--spacing-lg);
  padding: var(--spacing-lg);
}

.about-content {
  margin: 0 auto;
  max-width: 700px;
  text-align: center;
}

.about-section .profile-image-container {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-xl);
}

.about-section .profile-image {
  height: 250px;
  width: 250px;
}

.about-paragraphs {
  margin: var(--spacing-lg) auto;
  text-align: left;
}

/*SKILLS SECTION*/

.about-skills {
  border-top: 1px solid rgba(192, 132, 252, 0.2);
  padding-top: var(--spacing-xl);
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.skills-grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  justify-items: center;
  margin: var(--spacing-xl) auto;
  max-width: 900px;
}

.skill-item {
  align-items: center;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  text-align: center;
}

.skill-item i {
  color: #c084fc;
  display: block;
  font-size: 2.5rem;
}

.skill-item span {
  display: block;
  font-weight: 500;
}

/*PROJECTS SECTION*/

.projects-section {
  min-height: calc(100vh - 76px);
  padding: var(--spacing-xl) 0;
}

.section-header {
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.section-header h1 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-sm);
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
  line-height: 1.6;
  margin: 0 auto;
  max-width: 37.5rem;
}

.projects-grid-alternating {
  display: grid;
  gap: var(--spacing-xl);
  grid-template-columns: 1fr;
  margin-top: var(--spacing-xl);
}

/*PROJECT CARDS*/

.project-card-alt {
  align-items: center;
  background-color: var(--bg-secondary);
  border-radius: var(--radius-sm);
  display: grid;
  grid-template-columns: 45fr 55fr;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  transition: transform var(--transition-base),
    box-shadow var(--transition-base);
}

.project-card-alt:hover {
  box-shadow: var(--shadow-purple);
}

.project-card-alt:nth-child(even) {
  grid-template-columns: 55fr 45fr;
}

.project-card-alt:nth-child(even) .project-image-container {
  order: 2;
}

.project-card-alt:nth-child(even) .project-content-alt {
  order: 1;
}

.project-image-container {
  background-color: var(--bg-primary);
  border-radius: var(--radius-sm);
  overflow: hidden;
  width: 100%;
}

.project-image-alt {
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-base);
  width: 100%;
}

.project-card-alt:hover .project-image-alt {
  transform: scale(1.05);
}

.project-content-alt {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.project-title {
  color: var(--text-primary);
  font-family: "DM Serif Display", serif;
  font-size: var(--font-size-xl);
  margin: 0;
}

.project-description {
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  margin: 0;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-xs);
}

.tag {
  background: #f3e8ff;
  border-radius: 0.25rem;
  color: #6b21a8;
  font-size: 0.875rem;
  padding: 0.25rem 0.75rem;
  transition: all var(--transition-base);
}

.tag:hover {
  background: #e9d5ff;
  color: #5b21b6;
}

.project-links-alt {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

/*EXPANDABLE PROJECT DETAILS*/

.project-details {
  margin: 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out, margin 0.4s ease-out;
}

.project-details-expanded {
  margin: 1.5rem 0;
  max-height: 800px;
  transition: max-height 0.5s ease-in, margin 0.4s ease-in;
}

.project-details-content {
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.03);
  border-left: 3px solid var(--accent-color, #9b59b6);
  border-radius: 12px;
  padding: 1.5rem;
}

.project-details-expanded .project-details-content {
  animation: fadeIn 0.4s ease-out;
}

.details-heading {
  color: var(--accent-color, #7c3aed);
  font-family: "DM Serif Display", serif;
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.75rem 0;
}

.details-heading:not(:first-child) {
  margin-top: 1.5rem;
}

.features-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.features-list li {
  color: var(--text-primary, #212529);
  font-size: 0.9rem;
  line-height: 1.6;
  padding: 0.5rem 0;
  padding-left: 1.75rem;
  position: relative;
}

.features-list li::before {
  color: var(--accent-color, #7c3aed);
  content: "→";
  font-size: 1.1rem;
  font-weight: bold;
  left: 0;
  position: absolute;
}

.features-list strong {
  color: var(--accent-color, #7c3aed);
  font-weight: 600;
}

/*CONTACT SECTION*/

.content-section {
  min-height: calc(100vh - 76px);
  padding: var(--spacing-xl) 0;
}

.section-link {
  font-size: var(--font-size-lg);
}

.contact-header {
  font-size: var(--font-size-lg);
}

/*FOOTER*/

.footer {
  border-top: 1px solid rgba(192, 132, 252, 0.2);
  background-color: var(--bg-secondary);
  margin-top: auto;
  padding: var(--spacing-xl) 0 var(--spacing-lg) 0;
}

.footer-content {
  align-items: start;
  display: grid;
  gap: var(--spacing-xl);
  grid-template-columns: 1fr 1fr;
  margin-bottom: var(--spacing-xl);
}

.footer-section:first-child {
  max-width: 500px;
}

.footer-section:last-child {
  padding-left: var(--spacing-lg);
}

.footer-section h3 {
  background: var(--gradient-purple-short);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-family: "DM Serif Display", serif;
  font-size: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.footer-section p {
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links a {
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  text-decoration: none;
  transition: color var(--transition-base);
}

.footer-links a:hover {
  color: #c084fc;
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.social-icon {
  align-items: center;
  border: 2px solid var(--text-secondary);
  border-radius: 50%;
  color: var(--text-secondary);
  display: flex;
  height: 2.5rem;
  justify-content: center;
  text-decoration: none;
  transition: all var(--transition-base);
  width: 2.5rem;
}

.social-icon:hover {
  background: var(--gradient-purple-short);
  border-color: transparent;
  color: #ffffff;
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid rgba(192, 132, 252, 0.1);
  padding-top: var(--spacing-lg);
  text-align: center;
}

.footer-bottom p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin: 0;
}

.footer-bottom a {
  color: #c084fc;
  text-decoration: none;
  transition: color var(--transition-base);
}

.footer-bottom a:hover {
  color: #e879f9;
}

.footer-bottom .fa-heart {
  color: #e879f9;
}

.footer-bottom .fa-mug-hot {
  color: #c084fc;
}

/*RESPONSIVE DESIGN*/

/*Tablet and below(1024px)*/
@media (max-width: 64rem) {
  .project-card-alt {
    gap: var(--spacing-md);
    padding: var(--spacing-md);
  }

  .project-title {
    font-size: var(--font-size-lg);
  }

  .project-description {
    font-size: 0.9375rem;
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
}

/*Mobile landscape and below(768px)*/
@media (max-width: 48rem) {
  .hero-content h1 {
    font-size: 2.5rem;
  }

  .hero-content h2 {
    font-size: var(--font-size-xl);
  }

  .profile-image {
    height: 15.625rem;
    margin-top: var(--spacing-lg);
    width: 15.625rem;
  }

  .navbar-nav {
    margin-top: var(--spacing-sm);
    text-align: center;
  }

  .navbar-nav .nav-link {
    margin: var(--spacing-xs) 0;
  }

  .about-section .profile-image {
    height: 200px;
    width: 200px;
  }

  .skills-grid {
    gap: var(--spacing-md);
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  }

  .projects-grid-alternating {
    gap: var(--spacing-lg);
  }

  .project-card-alt,
  .project-card-alt:nth-child(even) {
    gap: var(--spacing-md);
    grid-template-columns: 1fr;
    padding: var(--spacing-md);
  }

  .project-card-alt:nth-child(even) .project-image-container,
  .project-card-alt,
  .project-image-container {
    order: 1;
  }

  .project-card-alt:nth-child(even) .project-content-alt,
  .project-card-alt .project-content-alt {
    order: 2;
  }

  .project-details-content {
    padding: 1rem;
  }

  .features-list li {
    font-size: 0.85rem;
    padding: 0.4rem 0;
    padding-left: 1.5rem;
  }

  .btn-learn-more {
    font-size: 0.85rem;
    justify-content: center;
    padding: 0.7rem 1rem;
    width: 100%;
  }

  .project-details-expanded {
    max-height: 1000px;
  }

  .section-header h1 {
    font-size: var(--font-size-2xl);
  }

  .section-subtitle {
    font-size: var(--font-size-base);
  }

  .footer-content {
    gap: var(--spacing-lg);
    grid-template-columns: 1fr;
  }

  .footer-links {
    align-items: flex-start;
  }

  .social-links {
    justify-content: center;
  }

  .footer-section:first-child {
    max-width: 100%;
  }

  .footer-section:last-child {
    padding-left: 0;
  }
}

/*Small mobile (576px)*/
@media (max-width: 36rem) {
  .hero-content h1 {
    font-size: var(--font-size-2xl);
  }

  .hero-content h2 {
    font-size: 1.25rem;
  }

  .hero-content p {
    font-size: var(--font-size-base);
  }

  .profile-image {
    height: 12.5rem;
    width: 12.5rem;
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .btn-primary-custom,
  .btn-secondary-custom {
    text-align: center;
    width: 100%;
  }

  .about-section {
    margin: var(--spacing-sm);
  }

  .project-card-alt {
    padding: var(--spacing-sm);
  }

  .project-title {
    font-size: var(--font-size-lg);
  }

  .project-description {
    font-size: 0.875rem;
  }

  .project-links-alt {
    flex-direction: column;
  }

  .btn-primary-custom,
  .btn-secondary-custom {
    width: 100%;
    text-align: center;
  }
}

/*Reduce motion for accessibility*/
@media (prefers-reduced-motion: reduce) {
  .profile-image,
  .gradient-text,
  * {
    animation: none !important;
    transition: none !important;
  }
}