/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
/* Colors & Variables */
:root {
  --container-width: 1280px;
  --gutter: 2.4rem;
  --color-black: #0a0a0a;
  --color-white: #ffffff;
  --color-primary: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-primary-light: #818cf8;
  --color-secondary: #10b981;
  --color-accent: #f59e0b;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --color-bg: var(--color-white);
  --color-text: var(--color-black);
  --color-card-bg: var(--color-white);
  --color-border: var(--color-gray-200);
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg:
    0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl:
    0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
}
/* Dark Mode */
[data-theme="dark"] {
  --color-bg: #0a0a0a;
  --color-text: #f9fafb;
  --color-card-bg: #111827;
  --color-border: #1f2937;
  --color-gray-100: #1f2937;
  --color-gray-200: #374151;
  --color-gray-300: #4b5563;
  --color-gray-700: #d1d5db;
}
/* Base */
html {
  font-size: 62.5%;
  scroll-behavior: smooth;
  scroll-padding-top: 8rem;
}
html,
body {
  overflow-x: hidden;
}
body {
  font-family: "Inter", sans-serif;
  font-size: 1.6rem;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  transition:
    background-color var(--transition-normal),
    color var(--transition-normal);
}
[data-aos] {
  overflow: hidden !important;
}
.video-loop {
  position: fixed;
  top: 0;
  left: 0;
  min-width: 100%;
  min-height: 100%;
  opacity: 0.04;
  z-index: -2;
  object-fit: cover;
  pointer-events: none;
}
/* Layout */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.5);
  border-bottom: 1px solid var(--color-border);
  padding: 1.6rem 0;
}
[data-theme="dark"] .header {
  background: rgba(10, 10, 10, 0.7);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
  gap: 2rem;
}
/* Logo */
.logo-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  flex-shrink: 0;
  margin-right: auto;
}
.logo-icon {
  width: 4.8rem;
  height: 4.8rem;
  border-radius: 1rem;
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-primary-dark)
  );
  color: #fff;
  font-size: 5.3rem;
  font-weight: 300;
  font-family: "Inter", sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}
.logo-icon:hover {
  background: linear-gradient(
    135deg,
    var(--color-primary-dark),
    var(--color-primary)
  );
  font-size: 5.7rem;
}
.logo-name {
  font-size: 3.4rem;
  font-weight: bold;
  color: var(--color-primary-dark);
  white-space: nowrap;
  font-family: "Source Serif 4", serif;
}
.burger-menu {
  display: none;
  flex-direction: column;
  gap: 0.6rem;
  cursor: pointer;
  z-index: 101;
}
.burgr-menu__bar {
  width: 2.8rem;
  height: 2px;
  background-color: var(--color-text);
  transition: var(--transition-normal);
}
.burgr-menu__checkbox {
  display: none;
}
/* Navigation */
.navigation__list {
  display: flex;
  gap: 3.2rem;
  list-style: none;
}
.navigation__link {
  text-decoration: none;
  font-weight: 500;
  font-size: 1.5rem;
  color: var(--color-text);
  position: relative;
  transition: color var(--transition-fast);
}
.navigation__link:hover {
  color: var(--color-primary);
}
.navigation__link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-normal);
}
.navigation__link:hover::after,
.navigation__link.active-link::after {
  width: 100%;
}
.navigation__link.active-link {
  color: var(--color-primary);
  font-weight: 600;
}
/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-left: auto;
}
.theme-toggle__label {
  cursor: pointer;
  width: 5rem;
  height: 2.6rem;
  background: var(--color-gray-300);
  border-radius: 5rem;
  position: relative;
  transition: background var(--transition-normal);
}
.theme-toggle__label::after {
  content: "☀️";
  position: absolute;
  top: 0.2rem;
  left: 0.3rem;
  width: 2.2rem;
  height: 2.2rem;
  background: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: transform var(--transition-normal);
}
.theme-toggle__checkbox {
  display: none;
}
.theme-toggle__checkbox:checked + .theme-toggle__label::after {
  transform: translateX(2.4rem);
  content: "🌙";
  background: var(--color-gray-800);
}
/* Overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  z-index: 98;
}
/* Drawer elements (hidden on desktop, shown on mobile) */
.drawer-header {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 1.6rem 2rem;
  border-bottom: 1px solid var(--color-border);
}
.drawer-close {
  width: 3.4rem;
  height: 3.4rem;
  border: 1.5px solid var(--color-gray-300);
  border-radius: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  cursor: pointer;
  color: var(--color-text);
  transition: background var(--transition-fast);
}
.drawer-close:hover {
  background: var(--color-gray-100);
}
.drawer-footer {
  display: none;
  margin-top: auto;
  padding: 2rem;
  border-top: 1px solid var(--color-border);
  align-items: center;
  gap: 1rem;
}
/* Sections */
.section {
  padding: 8rem 4.8rem;
}
.section--alt {
  background: var(--color-gray-100);
}
.section-title {
  font-size: 4rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 5rem;
  background: linear-gradient(135deg, var(--color-text), var(--color-primary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
/* ════════════════════════════════════════════
   BIO
   ════════════════════════════════════════════ */
.bio {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
  min-height: 80vh;
  margin-top: 6rem;
}
.bio__heading {
  font-size: 5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 2rem;
}
.typing {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  border-right: 3px solid #6366f1;
  padding-right: 6px;
  filter: drop-shadow(10px 10px 8px rgba(99, 102, 241, 0.35));
  animation: blink 0.7s infinite;
}
@keyframes blink {
  50% {
    border-color: transparent;
  }
}
.bio__objective {
  font-size: 2rem;
  color: var(--color-gray-700);
  margin-bottom: 3rem;
  line-height: 1.6;
}
.bio__objective a {
  text-decoration: none;
  color: var(--color-primary);
  font-weight: 600;
}
.bio__objective a:hover {
  border-bottom: 2px solid var(--color-primary);
}
.bio__links-group {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}
/* Bio Image */
.bio-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 100px;
}
.animation-wrapper {
  position: relative;
  width: 380px;
  height: 380px;
}
.image-frame {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: white;
  z-index: 5;
  overflow: hidden;
  border: 3px solid var(--color-gray-300);
  box-shadow: 0 15px 45px rgba(0, 0, 0, 0.07);
}
.main-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}
.moving-circle {
  position: absolute;
  border-radius: 50%;
  z-index: 10;
  opacity: 0.8;
}
.blue-circle {
  width: 100px;
  height: 100px;
  background: #5691e9;
  top: 10px;
  left: -20px;
  animation: pulse-A 4s infinite ease-in-out;
}
.purple-circle {
  width: 130px;
  height: 130px;
  background: #5691e9;
  bottom: 10px;
  right: -20px;
  animation: pulse-B 4s infinite ease-in-out;
}
@keyframes pulse-A {
  0%,
  100% {
    opacity: 0.4;
    transform: scale(1.1);
  }
  50% {
    opacity: 0.1;
    transform: scale(0.9);
  }
}
@keyframes pulse-B {
  0%,
  100% {
    opacity: 0.4;
    transform: scale(0.9);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.1);
  }
}
/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1.2rem 2.8rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1.6rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--transition-normal);
}
.btn-primary {
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-primary-dark)
  );
  color: white;
  padding: 1rem 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
  position: relative;
  overflow: hidden;
}
.btn-primary::before,
.btn-submit::before,
.project__link::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s;
}
.btn-primary:hover,
.btn-submit:hover,
.project__link:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}
.btn-primary:hover::before,
.btn-submit:hover::before,
.project__link:hover::before {
  left: 100%;
}
.btn-primary:active,
.btn-submit:active,
.project__link:active {
  transform: translateY(0);
}
.btn-outline {
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}
.btn-outline:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
}
/* Skills */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: 2.5rem;
}
.skills__item {
  background: var(--color-card-bg);
  padding: 2rem 1rem;
  border-radius: var(--radius-lg);
  text-align: center;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}
.skills__item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}
.skills__item i {
  font-size: 4.5rem;
  margin-bottom: 1rem;
  display: inline-block;
}
.skills__titel {
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.skills__years {
  font-size: 1.2rem;
  color: var(--color-gray-700);
}
/* Projects */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(35rem, 1fr));
  gap: 3rem;
}
.project__card {
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}
.project__card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}
.project__img {
  width: 100%;
  height: 22rem;
  object-fit: cover;
  transition: transform var(--transition-slow);
  background: linear-gradient(
    135deg,
    var(--color-gray-200),
    var(--color-gray-300)
  );
  display: flex;
  align-items: center;
  justify-content: center;
}
.project__card:hover .project__img {
  transform: scale(1.05);
}
.project__content {
  padding: 2rem;
}
.project__title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}
.project__description {
  font-size: 1.4rem;
  color: var(--color-gray-700);
  line-height: 1.5;
  margin-bottom: 1.5rem;
}
.project__links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.project__link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-primary-dark)
  );
  color: white;
  font-weight: 600;
  font-size: 1.4rem;
  padding: 0.8rem 1.6rem;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}
.project__link i {
  font-size: 1rem;
  transition: transform 0.3s ease;
  animation: icon-float 2.2s ease-in-out infinite;
}
.project__link:hover i {
  transform: translateX(8px);
}
@keyframes icon-float {
  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-3px) rotate(4deg);
  }
}
/* Clients */
.clients__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(30rem, 1fr));
  gap: 3rem;
}
.client__card {
  background: var(--color-card-bg);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}
.client__card:hover {
  transform: translateY(-5px);
}
.client__icon {
  font-size: 5rem;
  color: var(--color-primary);
  opacity: 0.5;
  margin-bottom: 1rem;
}
.client__text {
  font-size: 1.6rem;
  line-height: 1.6;
  font-style: italic;
}
/* Contact */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
}
.contact__email {
  display: inline-block;
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  margin-bottom: 2rem;
  transition: all 0.4s ease;
}
.contact__email:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}
.contact__socials {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
}
.contact__social {
  width: 4rem;
  height: 4rem;
  background: var(--color-gray-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--color-text);
  transition: all var(--transition-normal);
}
.contact__social:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-3px);
}
.form-group {
  margin-bottom: 2rem;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1.2rem 1.5rem;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 1.5rem;
  transition: all var(--transition-fast);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}
.btn-submit {
  width: 100%;
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-primary-dark)
  );
  color: white;
  padding: 1.5rem 2rem;
  font-weight: 600;
  font-size: 1.6rem;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}
#success-message {
  display: none;
  margin-top: 1.5rem;
  padding: 1.5rem;
  background: #10b981;
  color: white;
  border-radius: var(--radius-md);
  text-align: center;
  font-weight: 600;
  font-size: 1.5rem;
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.3);
}
/* Footer */
.footer {
  text-align: center;
  padding: 3rem 0;
  border-top: 1px solid var(--color-border);
  font-size: 1.4rem;
}
/* ════════════════════════════════════════════
   MEDIA QUERIES - FIXED NAVIGATION
   ════════════════════════════════════════════ */
@media (max-width: 968px) {
  html {
    font-size: 56.25%;
  }
  .bio {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .bio__links-group {
    justify-content: center;
  }
  .contact__grid {
    grid-template-columns: 1fr;
    gap: 4rem;
  }
  .projects__grid {
    grid-template-columns: repeat(auto-fill, minmax(30rem, 1fr));
  }
}
@media (max-width: 768px) {
  .section {
    padding: 5rem 0;
  }
  .section-title {
    font-size: 3rem;
  }
  .bio-container {
    padding: 50px 10px;
  }
  .animation-wrapper {
    width: 280px;
    height: 280px;
  }
  .blue-circle {
    width: 70px;
    height: 70px;
    top: 5px;
    left: -10px;
  }
  .purple-circle {
    width: 90px;
    height: 90px;
    bottom: 5px;
    right: -10px;
  }
  /* Show burger menu on mobile */
  .burger-menu {
    display: flex;
  }
  /* Burger menu X animation */
  .header:has(.burgr-menu__checkbox:checked)
    .burger-menu
    .burgr-menu__bar:nth-child(1) {
    transform: translateY(10px) rotate(45deg);
  }
  .header:has(.burgr-menu__checkbox:checked)
    .burger-menu
    .burgr-menu__bar:nth-child(2) {
    opacity: 0;
    visibility: hidden;
  }
  .header:has(.burgr-menu__checkbox:checked)
    .burger-menu
    .burgr-menu__bar:nth-child(3) {
    transform: translateY(-10px) rotate(-45deg);
  }
  /* Hide desktop theme toggle */
  .desktop-theme {
    display: none !important;
  }
  /* Convert navigation to drawer */
  .navigation {
    position: fixed;
    top: 0;
    left: -100%;
    width: 90%;
    max-width: 37rem;
    height: 70vh;
    background: var(--color-bg);
    border-right: 1px solid var(--color-border);
    z-index: 99;
    display: flex;
    flex-direction: column;
    padding: 0;
    transition: left var(--transition-normal);
    box-shadow: var(--shadow-xl);
  }
  /* Show drawer when checkbox is checked */
  .burgr-menu__checkbox:checked ~ .navigation {
    left: 0;
  }
  .burgr-menu__checkbox:checked ~ .nav-overlay {
    display: block;
  }
  /* Show drawer header and footer */
  .drawer-header {
    display: flex;
  }
  .drawer-footer {
    display: flex;
  }
  /* Style nav list for drawer */
  .navigation__list {
    flex-direction: column;
    gap: 0;
    padding: 1.2rem 1.6rem;
    margin: 0;
  }
  .navigation__list li {
    width: 100%;
  }
  .navigation__link {
    display: block;
    width: 100%;
    padding: 1.2rem 1.6rem;
    border-radius: 1rem;
    font-size: 1.6rem;
    margin-bottom: 0.4rem;
  }
  .navigation__link::after {
    display: none;
  }
  .navigation__link:hover {
    background: rgba(99, 102, 241, 0.08);
    color: var(--color-primary);
  }
  .navigation__link.active-link {
    background: rgba(99, 102, 241, 0.13);
    color: var(--color-primary);
    font-weight: 600;
  }
  /* Adjust other grids */
  .skills__grid {
    grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr));
    gap: 1.5rem;
  }
  .clients__grid {
    grid-template-columns: 1fr;
  }
  /* Mobile theme toggle inside drawer */
  .theme-toggle__label {
    width: 6rem;
    height: 3.2rem;
    margin-left: auto;
  }
  .theme-toggle__label::after {
    width: 2.8rem;
    height: 2.8rem;
    font-size: 1rem;
    top: 0.2rem;
    left: 0.2rem;
  }
  .theme-toggle__checkbox:checked + .theme-toggle__label::after {
    transform: translateX(2.8rem);
  }
}
@media (max-width: 480px) {
  html {
    font-size: 50%;
  }
  .container {
    padding: 0 1.5rem;
  }
  .bio__heading {
    font-size: 3.5rem;
  }
  .logo-name {
    font-size: 2.8rem;
  }
  .logo-icon {
    width: 4rem;
    height: 4rem;
    font-size: 3.7rem;
  }
  .logo-icon:hover {
    font-size: 3rem;
  }
  .animation-wrapper {
    width: 220px;
    height: 220px;
  }
  .blue-circle {
    width: 50px;
    height: 50px;
  }
  .purple-circle {
    width: 70px;
    height: 70px;
  }
  .projects__grid {
    grid-template-columns: 1fr;
  }
  .skills__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .burgr-menu__bar {
    width: 2.4rem;
  }
}
/* Extra Animations */
@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}