body {
  margin: 0;
  font-family: 'Open Sans', sans-serif;
  background-color: #f7f8fa;
  color: #2c3e50;
  transition: background 0.3s ease;
  scroll-behavior: smooth;
}

body.dark {
  background-color: #1e1e1e;
  color: #f0f0f0;
}

.left-sidebar {
  width: 240px;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  background: #f1f3f6;
  padding: 30px 20px;
  overflow-y: auto;
  border-right: 1px solid #ddd;
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.left-sidebar a.active {
  color: #2d7ef7;
  font-weight: bold;
}

.left-sidebar img {
  max-width: 100%;
  height: auto;
  margin-bottom: 1rem;
}

.left-sidebar h1 {
  font-family: 'Playfair Display', serif;
  font-size: 24px;
  margin: 0;
}

.left-sidebar p {
  margin: 0.5rem 0 1rem;
}

.left-sidebar ul {
  list-style: none;
  padding: 0;
  margin-top: 30px;
  width: 100%;
}

.left-sidebar li {
  margin: 12px 0;
}

.left-sidebar a {
  text-decoration: none;
  color: #333;
  font-size: 16px;
}

.left-sidebar a.active {
  color: #007bff;
  font-weight: bold;
}

#toggle-theme {
  margin-top: auto;
  margin-bottom: 20px;
  background: linear-gradient(to bottom, #f8f8f8, #e0e0e0);
  color: #2c3e50;
  border: 1px solid #ccc;
  padding: 10px 20px;
  font-weight: 600;
  border-radius: 10px;
  cursor: pointer;
  box-shadow: inset 0 0 3px rgba(255, 255, 255, 0.8),
              inset 0 -2px 5px rgba(0, 0, 0, 0.05),
              0 1px 2px rgba(0, 0, 0, 0.1);
  transition: background 0.3s ease;
}

#toggle-theme:hover {
  background: linear-gradient(to bottom, #eaeaea, #d0d0d0);
}

.social-links-icons {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin: 20px 0;
}

.social-links-icons a {
  font-size: 22px;
  padding: 12px;
  border-radius: 50%;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.icon-github {
  background-color: #333;
}

.icon-linkedin {
  background-color: #0A66C2;
}

.icon-email {
  background-color: #444;
}

.social-links-icons a:hover {
  transform: scale(1.1);
}

/* === MAIN SECTION === */
.content-section {
  margin-left: 260px;
  padding: 60px 40px;
  min-height: 100vh;
}

section {
  padding: 80px 20px;
  margin-bottom: 60px;
  scroll-margin-top: 80px;
}

/* === HERO === */
.hero-container {
  position: relative;
  min-height: 300px;
  overflow: hidden;
  background: #f0f2f5;
  border-radius: 12px;
  padding: 3rem 2rem;
  text-align: left;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-container::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-image: url('../images/profile.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.06;
  z-index: 0;
}

.hero-swap {
  position: relative;
  z-index: 1;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1s ease, transform 1s ease;
  pointer-events: none;
}

.hero-swap.active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.hero-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.5rem;
  border: 2px solid #333;
  background: rgba(255,255,255,0.4);
  font-weight: bold;
  font-size: 1rem;
  text-decoration: none;
  color: inherit;
  margin-top: 1rem;
  border-radius: 6px;
  transition: background 0.3s, color 0.3s;
  backdrop-filter: blur(4px);
}

.hero-button:hover {
  background: #333;
  color: #fff;
}

.hero-button i {
  font-size: 1.1rem;
}


.skills-grid {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.skills-column {
  flex: 1;
  min-width: 250px;
}

.skill {
  margin-bottom: 1.2rem;
}

.skill-label {
  font-weight: bold;
  margin-bottom: 0.3rem;
}

.skill-bar {
  background: #e0e0e0;
  height: 10px;
  border-radius: 6px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  transition: width 1s ease;
}
/* === SERVICES === */
.card-grid {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.feature-card {
  background: white;
  padding: 1.2rem;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  flex: 0 0 calc(33.333% - 1.5rem);
  max-width: calc(33.333% - 1.5rem);
  min-width: 240px;
  box-sizing: border-box;
  text-align: center;
  opacity: 0;
  transform: translateX(-40px);
  animation: fadeInLeft 1s ease-out forwards;
}

.feature-card .icon {
  font-size: 2rem;
  margin-bottom: 0.8rem;
  color: #2d7ef7;
}

.feature-card h3 {
  margin: 0.5rem 0;
  font-size: 1.1rem;
}

.feature-card p {
  font-size: 0.95rem;
  color: #555;
}

.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.4s; }

@keyframes fadeInLeft {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@media (max-width: 768px) {
  .content-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .card-grid {
    flex-direction: column;
    align-items: center;
  }

  .feature-card {
    width: 100%;
    max-width: 320px;
  }

  .hero-container {
    text-align: center;
  }
}

/* === EDUCATION === */
.accordion-toggle {
  cursor: pointer;
  background: #007bff;
  color: white;
  padding: 1rem;
  font-weight: bold;
  border-radius: 5px;
  margin-bottom: 1rem;
  transition: background 0.3s;
}

.accordion-toggle:hover {
  background: #0056b3;
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  background: #f8f9fa;
  padding: 0 1rem;
  border-left: 3px solid #007bff;
  border-radius: 5px;
  transition: max-height 0.3s ease;
}

.accordion-toggle.active + .accordion-content {
  max-height: 200px;
  padding: 1rem;
}

.accordion-content ul {
  padding-left: 1.5rem;
  margin: 0;
  list-style-type: disc;
}

.accordion-content p {
  margin: 0 0 0.5rem 0;
}

/* === CONTACT === */
.contact-container {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: center;
}

.contact-info {
  flex: 1 1 30%;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-form {
  flex: 1 1 60%;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.icon-box {
  width: 60px;
  height: 60px;
  background: #f1f3f6;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 24px;
  color: #2d7ef7;
}

.contact-form input,
.contact-form textarea {
  padding: 1rem;
  border: none;
  background: #f1f3f6;
  border-radius: 6px;
}

.button-metal {
  background: linear-gradient(to bottom, #f2f3f5, #e6e7e9);
  color: #2c3e50;
  font-weight: 700;
  border: 1px solid #c3c3c3;
  border-radius: 12px;
  padding: 10px 20px;
  font-size: 1rem;
  box-shadow: 
    0 1px 2px rgba(0,0,0,0.1),
    inset 0 1px 0 #ffffff,
    inset 0 -1px 2px rgba(0,0,0,0.05);
  transition: all 0.2s ease-in-out;
  text-align: center;
  cursor: pointer;
}

.button-metal:hover {
  background: linear-gradient(to bottom, #e6e7e9, #d4d5d8);
  box-shadow: 
    0 2px 4px rgba(0,0,0,0.15),
    inset 0 1px 0 #ffffff,
    inset 0 -1px 1px rgba(0,0,0,0.1);
}

/* === FOOTER === */
.footer {
  margin-left: 260px;
  padding: 20px;
  text-align: center;
  font-size: 14px;
  color: #777;
}

/* === ANIMATION === */
.fade-slide {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInSlide 1.5s ease-out forwards;
  animation-delay: 0.3s;
}

@keyframes fadeInSlide {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
  .left-sidebar {
    position: relative;
    width: 100%;
    border: none;
    text-align: center;
  }

  .left-sidebar ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
  }

  .content-section,
  .footer {
    margin-left: 0;
    padding: 20px;
  }

  .skills-grid {
    flex-direction: column;
  }

  .contact-container {
    flex-direction: column;
  }

  .hero-container {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .hero-button {
    display: inline-flex;
    justify-content: center;
  }

  .card-grid {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
  }
}