/* ==========================================
   CSS Variables & Reset
   ========================================== */
:root {
  --primary: #1a1a2e;
  --secondary: #16213e;
  --accent: #0f3460;
  --highlight: #e94560;
  --text: #eeeeee;
  --text-secondary: #aaaaaa;
  --bg-dark: #0f0f1a;
  --bg-card: #1a1a2e;
  --bg-card-hover: #222240;
  --gradient: linear-gradient(135deg, #0f3460, #e94560);
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-dark);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

img,
svg,
video {
  max-width: 100%;
}

button,
input,
textarea {
  font: inherit;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2rem);
}

/* ==========================================
   Scrollbar
   ========================================== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--highlight);
}

/* ==========================================
   Navbar
   ========================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  background: rgba(15, 15, 26, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: var(--transition);
}

.navbar.scrolled {
  padding: 0.7rem 5%;
  background: rgba(15, 15, 26, 0.95);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.logo {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text);
}

.logo span {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  transition: var(--transition);
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gradient);
  transition: width 0.3s ease;
}

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

.nav-links a:hover::after {
  width: 100%;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: clamp(96px, 12vw, 140px) 1rem clamp(48px, 8vw, 80px);
  background: radial-gradient(ellipse at 50% 0%, rgba(15, 52, 96, 0.3) 0%, transparent 60%);
}

.hero-content {
  max-width: 700px;
  width: 100%;
}

.hero-image-wrapper {
  margin-bottom: 2rem;
}

.profile-image {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 4px solid var(--highlight);
  object-fit: cover;
  box-shadow: 0 0 40px rgba(233, 69, 96, 0.3);
  transition: transform 0.4s ease;
}

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

.profile-image-fallback {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 4px solid var(--highlight);
  background: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  box-shadow: 0 0 40px rgba(233, 69, 96, 0.3);
}

.profile-image-fallback i {
  font-size: 4rem;
  color: var(--text-secondary);
}

.hero h1 {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.tagline {
  font-size: clamp(1.05rem, 2.5vw, 1.3rem);
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-weight: 400;
}

.subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  opacity: 0.8;
}

.cta-button {
  display: inline-block;
  background: var(--gradient);
  color: #fff;
  padding: 14px 36px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-decoration: none;
  min-height: 48px;
}

.cta-button:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 30px rgba(233, 69, 96, 0.4);
}

/* ==========================================
   Section Title
   ========================================== */
.section-title {
  text-align: center;
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 3rem;
  position: relative;
  padding-bottom: 1rem;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--gradient);
  border-radius: 2px;
}

/* ==========================================
   About Section
   ========================================== */
.about {
  padding: clamp(4rem, 9vw, 6.25rem) 0;
  background: var(--bg-card);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-text p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.about-details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.detail-item {
  display: flex;
  gap: 1.2rem;
  align-items: flex-start;
  padding: 1.5rem;
  background: var(--bg-dark);
  border-radius: 12px;
  transition: var(--transition);
}

.detail-item:hover {
  transform: translateX(8px);
}

.detail-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.detail-icon i {
  font-size: 1.3rem;
  color: #fff;
}

.detail-item h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: var(--text);
}

.detail-item p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* ==========================================
   Skills Section
   ========================================== */
.skills {
  padding: clamp(4rem, 9vw, 6.25rem) 0;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 2rem;
}

.skill-category {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: 16px;
  transition: var(--transition);
}

.skill-category:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.skill-category h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--highlight);
}

.skill-category h3 i {
  margin-right: 8px;
}

.skill-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.skill-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--bg-card-hover);
  border-radius: 8px;
  transition: var(--transition);
  font-size: 0.95rem;
}

.skill-item:hover {
  background: var(--accent);
  transform: translateX(6px);
}

.skill-item i {
  font-size: 1.1rem;
  color: var(--highlight);
  width: 24px;
  text-align: center;
}

/* ==========================================
   Projects Section
   ========================================== */
.projects {
  padding: clamp(4rem, 9vw, 6.25rem) 0;
  background: var(--bg-card);
}

.projects-controls {
  display: none;
}

.project-nav-btn {
  width: 42px;
  height: 42px;
  border: 1px solid rgba(233, 69, 96, 0.3);
  background: var(--bg-dark);
  color: var(--text);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  opacity: 1;
}

.project-nav-btn:hover:not(:disabled) {
  background: var(--gradient);
  border-color: transparent;
  transform: translateY(-2px);
}

.project-nav-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 2rem;
}

.project-card {
  background: var(--bg-dark);
  border-radius: 16px;
  padding: 2rem;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  display: flex;
  flex-direction: column;
  border: 1px solid transparent;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  border-color: rgba(233, 69, 96, 0.3);
}

.project-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.8rem;
  color: var(--text);
}

.project-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
  flex-grow: 1;
  line-height: 1.7;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 1.2rem;
}

.project-tech span {
  background: var(--accent);
  color: var(--text);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.project-links {
  display: flex;
  gap: 1rem;
}

.project-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--highlight);
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition);
}

.project-links a:hover {
  color: #ff6b81;
  transform: translateX(4px);
}

.project-links a i {
  font-size: 1rem;
}

/* ==========================================
   Experience Section
   ========================================== */
.experience {
  padding: clamp(4rem, 9vw, 6.25rem) 0;
}

.experience-timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem;
}

.experience-timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  transform: translateX(-50%);
}

.experience-item {
  position: relative;
  width: 50%;
  padding: 0 2.5rem 3rem;
}

.experience-item:nth-child(odd) {
  left: 0;
  text-align: right;
  padding-right: 3rem;
  padding-left: 0;
}

.experience-item:nth-child(even) {
  left: 50%;
  text-align: left;
  padding-left: 3rem;
  padding-right: 0;
}

.experience-dot {
  position: absolute;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--highlight);
  border: 3px solid var(--bg-dark);
  z-index: 1;
}

.experience-item:nth-child(odd) .experience-dot {
  right: -8px;
}

.experience-item:nth-child(even) .experience-dot {
  left: -8px;
}

.experience-card {
  background: var(--bg-card);
  padding: 1.5rem;
  border-radius: 12px;
  transition: var(--transition);
}

.experience-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.experience-type {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.8rem;
}

.experience-type.internship {
  background: rgba(46, 213, 115, 0.2);
  color: #2ed573;
}

.experience-type.organization {
  background: rgba(15, 52, 96, 0.4);
  color: #70a1ff;
}

.experience-type.committee {
  background: rgba(255, 159, 67, 0.2);
  color: #ffa502;
}

.experience-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: var(--text);
}

.experience-card h4 {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--highlight);
  margin-bottom: 0.5rem;
}

.experience-period {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.8rem;
}

.experience-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================
   Certificates Section
   ========================================== */
.certificates {
  padding: clamp(4rem, 9vw, 6.25rem) 0;
  background: var(--bg-card);
}

.certificates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 2rem;
}

.certificate-card {
  background: var(--bg-dark);
  border-radius: 16px;
  padding: 2rem;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  display: flex;
  flex-direction: column;
  border: 1px solid transparent;
}

.certificate-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  border-color: rgba(233, 69, 96, 0.3);
}

.certificate-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.certificate-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
  flex-grow: 1;
  line-height: 1.7;
}

.certificate-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.certificate-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.certificate-icon i {
  color: #fff;
  font-size: 1.3rem;
}

.certificate-type {
  display: inline-block;
  margin-bottom: 0.4rem;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(233, 69, 96, 0.12);
  color: var(--highlight);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.certificate-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}

.certificate-issuer,
.certificate-date,
.certificate-description {
  color: var(--text-secondary);
  line-height: 1.7;
}

.certificate-issuer {
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.certificate-date {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  margin-bottom: 0.75rem;
}

.certificate-description {
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.certificate-card a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--highlight);
  font-weight: 600;
  transition: var(--transition);
}

.certificate-card a:hover {
  color: #ff6b81;
}
 
/* ==========================================
   Contact Section
   ========================================== */
.contact {
  padding: clamp(4rem, 9vw, 6.25rem) 0;
  background: var(--bg-dark);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  max-width: 1000px;
  margin: 0 auto;
}

.contact-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon i {
  font-size: 1.2rem;
  color: #fff;
}

.contact-item h3 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
  color: var(--text);
}

.contact-item a,
.contact-item p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

.contact-item a:hover {
  color: var(--highlight);
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-links a {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--bg-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--text-secondary);
  transition: var(--transition);
  border: 1px solid var(--accent);
}

.social-links a:hover {
  background: var(--gradient);
  color: #fff;
  border-color: transparent;
  transform: translateY(-4px);
}

/* Contact Form */
.contact-form-wrapper form {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--highlight);
  box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.submit-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.form-notification {
  margin-top: 1rem;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  display: none;
}

.form-notification.success {
  display: block;
  background: rgba(46, 213, 115, 0.15);
  color: #2ed573;
  border: 1px solid rgba(46, 213, 115, 0.3);
}

.form-notification.error {
  display: block;
  background: rgba(255, 71, 87, 0.15);
  color: #ff4757;
  border: 1px solid rgba(255, 71, 87, 0.3);
}

/* ==========================================
   Footer
   ========================================== */
footer {
  background: var(--bg-dark);
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* ==========================================
   Animations
   ========================================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 1024px) {
  .experience-timeline::before {
    left: 20px;
  }

  .experience-item {
    width: 100%;
    left: 0 !important;
    text-align: left !important;
    padding-left: 3.5rem !important;
    padding-right: 0 !important;
  }

  .experience-dot {
    left: 12px !important;
    right: auto !important;
  }
}

@media (max-width: 768px) {
  .navbar {
    padding: 0.85rem 1rem;
  }

  .logo {
    font-size: 1.25rem;
  }

  /* Navbar mobile */
  .hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(82vw, 300px);
    height: 100vh;
    background: var(--primary);
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    padding: 2rem;
    transition: right 0.3s ease;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links a {
    font-size: 1.1rem;
    color: var(--text);
  }

  /* Hero */
  .hero h1 {
    font-size: clamp(1.9rem, 8vw, 2.4rem);
  }

  .tagline {
    font-size: 1.1rem;
  }

  .profile-image,
  .profile-image-fallback {
    width: clamp(120px, 35vw, 150px);
    height: clamp(120px, 35vw, 150px);
  }

  /* Contact */
  .contact-content {
    grid-template-columns: 1fr;
  }

  /* Section titles */
  .section-title {
    font-size: clamp(1.65rem, 6vw, 2rem);
    margin-bottom: 2.25rem;
  }

  .experience-timeline {
    padding: 0 0 0 1.5rem;
  }

  .experience-timeline::before {
    left: 0;
  }

  .experience-item {
    padding-left: 1.5rem !important;
  }

  .experience-dot {
    left: -8px !important;
  }

  .skill-category,
  .project-card {
    padding: 1.35rem;
  }
}

@media (max-width: 480px) {
  .hero {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .cta-button {
    width: 100%;
    padding: 12px 20px;
    font-size: 0.9rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .detail-item,
  .contact-item {
    gap: 0.8rem;
  }

  .detail-item {
    padding: 1rem;
  }

  .detail-icon,
  .contact-icon {
    width: 42px;
    height: 42px;
  }

  .project-links {
    flex-direction: column;
    gap: 0.7rem;
  }
}