.nav-link {
  position: relative;
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  color: #0d6efd;
  margin: 0 0.5rem;
}

.nav-link .link-text::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  height: 2px;
  background-color: #032f72;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
  width: 100%;
}

.nav-link:hover .link-text::after {
  transform: scaleX(1);
}

.icon {
  display: none;
}

@media (max-width: 992px) {
  .nav-link .link-text {
    display: none;
  }

  .icon {
    display: inline-block;
    font-size: 1.2rem;
  }
}

.navbar {
  background-color: rgba(222, 235, 245, 0.7);
  backdrop-filter: blur(5px);
  border-radius: 35px;
  margin: 10px;
  padding: 0.5rem 1rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
  font-family: 'Oswald', sans-serif;
  font-weight: 700;
  font-size: 1.7rem;
  color: #0d6efd;
}

.navbar-toggler {
  border: none;
  padding: 0.25rem 0.5rem;
  margin: 0;
}

.theme-btn {
  border: none;
  padding: 8px 12px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  cursor: pointer;
  margin: 0;
  transition: 0.3s ease;
}

.navbar-toggler-icon {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
}

.navbar-toggler-icon span {
  display: block;
  height: 3px;
  background-color: #0d6efd;
  border-radius: 2px;
}

.navbar-toggler:focus,
.navbar-toggler:active {
  outline: none;
  box-shadow: 0 0 0 2px rgba(13, 110, 253, 0.5);
  border-color: #0d6efd;
}

.hero-section {
  height: 80vh;
  background-image: url('images/hero.jpg');
  box-shadow: inset 0 0 0 1000px rgba(0, 3, 6, 0.3);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  color: #fff;
}

.hero-section::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.4);
}

.hero-section .container {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-family: 'Poppins', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  margin: 0.5rem 0;
}

@media (max-width: 992px) {
  .hero-title {
    font-size: 2.5rem;
  }
}

@media (max-width: 576px) {
  .hero-title {
    font-size: 1.8rem;
    line-height: 1.3;
  }
}


.hero-subtitle {
  font-family: 'Poppins', sans-serif;
  font-size: 2.5rem;
}

@media (max-width: 576px) {
  .hero-subtitle {
    font-size: 1.8rem;
    line-height: 1.3;
  }
}

.hero-section .btn {
  background: #0d6efd;
  color: aliceblue;
  padding: 0.50rem 1rem;
  font-size: 1rem;
  border-radius: 20px;
}


:root {
  --accent: #0d6efd;
  --accent-soft: rgba(13, 110, 253, 0.18);
  --bg-card: rgba(255, 255, 255, 0.95);
  --text: #333;
}

.home-core-section {
  padding: 4rem 0;
  background: #f6f9fc;
}

@media (max-width: 992px) {
  .core-inner {
    flex-direction: column-reverse;
    text-align: center;
    gap: 1rem;
  }

  .core-image {
    order: 1;
    margin-bottom: 0.5rem;
  }

  .image-ring {
    width: 200px;
    height: 200px;
    padding: 5px;
  }

  .core-content {
    width: 100%;
    max-width: 720px;
    padding: rem;
  }
}


.image-ring {
  width: 340px;
  height: 340px;
  border-radius: 50%;
  padding: 10px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0.4));
  border: 6px solid var(--accent-soft);
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 18px 40px rgba(15, 20, 30, 0.12);
}

.profile-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: block;
}

.core-content {
  flex: 1 1 560px;
  max-width: 720px;
  background: var(--bg-card);
  border-radius: 18px;
  padding: 1.6rem 2rem;
  box-shadow: 0 12px 36px rgba(12, 20, 40, 0.06);
}

.greeting-line {
  font-family: 'Oswald', sans-serif;
  font-size: 2.15rem;
  color: var(--accent);
  margin: 0 0 0.5rem 0;
  line-height: 1.05;
}

.greeting-line .name {
  display: inline-block;
}

.skills-typing-wrap {
  margin-top: 0.6rem;
  font-family: 'Poppins', sans-serif;
  font-size: 1.15rem;
  color: var(--accent);
  min-height: 1.5rem;
}

#typing-prefix {
  color: #333;
  font-weight: 500;
}

#typing-target {
  font-weight: 600;
  margin-left: 6px;
}

.pitch {
  margin-top: 1rem;
  font-family: 'Poppins', sans-serif;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.6;
}

.core-buttons {
  margin-top: 1.6rem;
  display: flex;
  gap: 0.9rem;
  align-items: center;
  justify-content: flex-start;
}

.btn {
  font-family: 'Poppins', sans-serif;
  border-radius: 10px;
  padding: 0.72rem 1.2rem;
  font-weight: 600;
  transition: all .18s ease;
  border: 2px solid transparent;
}

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

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-outline-primary {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}

@media (max-width: 992px) {
  .core-inner {
    flex-direction: column-reverse;
    text-align: center;
  }

  .core-image {
    order: 1;
    margin-bottom: 1rem;
  }

  .image-ring {
    width: 260px;
    height: 260px;
  }

  .core-content {
    width: 100%;
    max-width: 720px;
    padding: 1.4rem;
  }

  .core-buttons {
    justify-content: center;
  }
}

@media (max-width: 576px) {
  .image-ring {
    width: 200px;
    height: 200px;
  }

  .greeting-line {
    font-size: 1.6rem;
  }

  .pitch {
    font-size: 0.98rem;
  }
}

.grid-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

@media (max-width: 992px) {
  .grid-container {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid-container {
    grid-template-columns: 1fr;
  }
}

/* About block */
.about-block {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 18px;
  padding: 1.6rem;
  box-shadow: 0 12px 36px rgba(12, 20, 40, 0.06);
}

.about-block h3 {
  font-family: 'Oswald', sans-serif;
  color: var(--accent);
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

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

.about-list li {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-family: 'Poppins', sans-serif;
  font-size: 1rem;
  margin-bottom: 0.8rem;
}

.progress-ring {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(13, 110, 253, 0.15);
  color: var(--accent);
  font-size: 1rem;
  font-weight: 600;
}

.progress-ring::after {
  content: attr(data-percent) '%';
  position: absolute;
  font-size: 0.6rem;
  font-weight: 600;
  color: var(--accent);
}

.progress-ring i {
  position: absolute;
  font-size: 1rem;
}

/* skill */
.skills-section {
  padding: 4rem 0;
  background: #f6f9fc;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.skill-box {
  background: #fff;
  border-radius: 20px;
  padding: 2rem 1.5rem;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.skill-box:hover {
  transform: translateY(-5px);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.12);
}

.skill-box h3 {
  font-family: 'Oswald', sans-serif;
  color: var(--accent);
  margin-bottom: 1.5rem;
  font-size: 1.6rem;
  text-align: center;
}

.skill-item {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.skill-item img {
  width: 36px;
  height: 36px;
}

.skill-item span {
  flex: 1;
  font-weight: 600;
  color: #333;
}

.progress-bar {
  flex: 1;
  height: 10px;
  background: #eee;
  border-radius: 5px;
  overflow: hidden;
  position: relative;
}

.progress-bar span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent) 0%, #00c6ff 100%);
  border-radius: 5px;
  transition: width 1.2s ease-in-out;
}

@media (max-width: 1200px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .skills-grid {
    grid-template-columns: 1fr;
  }
}

/* certificates */
.cert-grid {
  display: flex;
  flex-wrap: nowrap;
  overflow-x: auto;
  padding: 1rem 0;
  gap: 1rem;
}

.cert-card {
  flex: 0 0 200px;
  position: relative;
  transform: translateY(0);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cert-card:nth-child(2) {
  transform: translate(-30px, 10px);
  z-index: 2;
}

.cert-card:nth-child(3) {
  transform: translate(-60px, 20px);
  z-index: 1;
}

.cert-card:hover {
  transform: translate(0, -10px) scale(1.05);
  z-index: 10;
  border-radius: 10%;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.cert-logo {
  width: 120px;
  height: 120px;
  border-radius: 12px;
  object-fit: cover;
  margin-bottom: 0.9rem;
}

@media (max-width: 768px) {
  .cert-grid {
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 0.8rem;
  }

  .cert-card {
    border-radius: 25%;
    flex: 0 0 160px;
    transform: translateY(0);
  }

  .cert-card:nth-child(n) {
    transform: translateY(0);
    z-index: auto;
  }
}

.theme-btn {
  background: transparent;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  color: #0d6efd;
  transition: 0.3s;
}

.theme-btn:hover {
  transform: scale(1.15);
}



@media (max-width: 992px) {
  .cert-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.6rem;
  }

  .cert-card {
    padding: 1.2rem;
  }

  .cert-logo {
    width: 95px;
    height: 95px;
  }

  .cert-title {
    font-size: 1.02rem;
  }

  .cert-provider {
    font-size: 0.85rem;
  }
}

@media (max-width: 576px) {
  .cert-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .cert-card {
    padding: 1rem;
  }

  .cert-logo {
    width: 80px;
    height: 80px;
  }

  .cert-title {
    font-size: 0.98rem;
  }

  .cert-provider {
    font-size: 0.78rem;
  }
}

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

.projects-section {
  padding: 4rem 0;
  background: #f6f9fc;
}

.section-title {
  text-align: center;
  font-size: 2rem;
  font-family: 'Oswald';
  color: var(--accent);
  margin-bottom: 2.5rem;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.project-card {
  background: #fff;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.08);
  transition: .3s ease;
}

.project-card:hover {
  transform: translateY(-6px);
}

.project-img img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.project-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 1rem;
}

.project-desc {
  font-size: .9rem;
  padding: 0 1rem;
  color: #555;
}

.project-links {
  display: flex;
  justify-content: space-between;
  padding: 1rem;
}

.btn-live,
.btn-github {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: .85rem;
  font-weight: 600;
  transition: .3s;
}

.btn-live {
  background: var(--accent);
  color: #fff;
}

.btn-github {
  background: #222;
  color: #fff;
}

.btn-live:hover,
.btn-github:hover {
  opacity: .8;
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.work-card {
  background: rgba(255, 255, 255, 0.6);
  padding: 1.5rem;
  border-radius: 14px;
  backdrop-filter: blur(12px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
}

.work-card h3 {
  color: var(--accent);
  font-size: 1.2rem;
  margin-bottom: 6px;
}

.work-place {
  font-size: .9rem;
  color: #444;
}

.work-time {
  font-size: .8rem;
  color: #666;
}


@media (max-width: 992px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .work-grid {
    grid-template-columns: 1fr;
  }
}

.contact-section {
  padding: 4rem 0;
  background: #f6f9fc;
}

.section-title {
  font-family: 'Oswald', sans-serif;
  font-size: 2rem;
  color: var(--accent);
  text-align: center;
  margin-bottom: 2.5rem;
}

.contact-form {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-row {
  display: flex;
  gap: 1rem;
}

.form-group {
  position: relative;
  flex: 1;
}

input,
textarea,
select {
  width: 100%;
  padding: 1rem 1rem 0.5rem 1rem;
  border: 2px solid #ccc;
  border-radius: 10px;
  background: #fff;
  font-family: 'Poppins', sans-serif;
  font-size: 0.95rem;
  outline: none;
  transition: 0.25s;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(13, 110, 253, 0.2);
}

label {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: #666;
  font-size: 0.95rem;
  pointer-events: none;
  transition: 0.2s ease all;
}

input:focus+label,
input:not(:placeholder-shown)+label,
textarea:focus+label,
textarea:not(:placeholder-shown)+label,
select:focus+label,
select:not([value=""])+label {
  top: -8px;
  left: 12px;
  font-size: 0.8rem;
  color: var(--accent);
  background: #f6f9fc;
  padding: 0 4px;
}

textarea {
  resize: none;
  padding-top: 1rem;
}

select {
  appearance: none;
  padding-top: 1rem;
  background: #fff url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='%23666' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M7 10l5 5 5-5H7z'/%3E%3C/svg%3E") no-repeat right 12px center;
  background-size: 16px;
}

.file-upload input {
  padding-top: 0.75rem;
}

button {
  margin-top: 1.5rem;
  padding: 0.75rem;
  border-radius: 12px;
  border: 2px solid var(--accent);
  background: var(--accent);
  color: #fff;
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: 0.25s;
}

button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(13, 110, 253, 0.3);
}

@media (max-width: 768px) {
  .form-row {
    flex-direction: column;
  }
}

.footer-section {
  background: #0d1b2a;
  color: #fff;
  padding: 4rem 0 2rem;
  font-family: 'Poppins', sans-serif;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.footer-logo {
  font-family: 'Oswald', sans-serif;
  font-size: 1.8rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

.footer-about p {
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.footer-socials a {
  display: inline-block;
  width: 36px;
  height: 36px;
  background: var(--accent);
  color: #fff;
  text-align: center;
  line-height: 36px;
  margin-right: 0.5rem;
  border-radius: 50%;
  transition: 0.3s;
}

.footer-socials a:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(13, 110, 253, 0.3);
}

.footer-links h4,
.footer-contact h4,
.footer-newsletter h4 {
  font-family: 'Oswald', sans-serif;
  font-size: 1.2rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

.footer-links ul,
.footer-contact ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links ul li,
.footer-contact ul li {
  margin-bottom: 0.7rem;
  font-size: 0.95rem;
}

.footer-links ul li a {
  color: #fff;
  text-decoration: none;
  transition: 0.2s;
}

.footer-links ul li a:hover {
  color: var(--accent);
}

.footer-contact ul li i {
  margin-right: 0.5rem;
  color: var(--accent);
}

.footer-newsletter p {
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.newsletter-form {
  display: flex;
  gap: 0.5rem;
}

.newsletter-form input {
  flex: 1;
  padding: 0.6rem 1rem;
  border-radius: 10px;
  border: none;
  outline: none;
}

.newsletter-form button {
  padding: 0 1rem;
  border-radius: 10px;
  border: none;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  transition: 0.3s;
}

.newsletter-form button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(13, 110, 253, 0.3);
}

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.85rem;
  color: #aaa;
}

@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}


/* .dark-mode */
.dark-mode {
  --accent: #4da3ff;
  --accent-soft: rgba(77, 163, 255, 0.25);
  --bg-card: rgba(20, 26, 37, 0.72);
  --text: #e6e9ef;
}

.dark-mode .navbar {
  background-color: rgba(15, 20, 30, 0.75) !important;
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.6);
}

.dark-mode .nav-link {
  color: #a4c8ff !important;
}

.dark-mode .nav-link .link-text::after {
  background-color: #4da3ff;
}

.dark-mode .navbar-toggler-icon span {
  background-color: #4da3ff;
}

.dark-mode .home-core-section,
.dark-mode .skills-section,
.dark-mode .projects-section,
.dark-mode .contact-section {
  background: #0e141f;
}

.dark-mode .core-content,
.dark-mode .skill-box,
.dark-mode .about-block,
.dark-mode .project-card,
.dark-mode .work-card,
.dark-mode .contact-form input,
.dark-mode .contact-form textarea,
.dark-mode select {
  background: rgba(25, 32, 45, 0.75);
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.55);
}

.dark-mode input,
.dark-mode textarea,
.dark-mode select {
  background: rgba(30, 38, 50, 0.85);
  color: #fff;
}

.dark-mode h1,
.dark-mode h2,
.dark-mode h3,
.dark-mode h4,
.dark-mode .section-title {
  color: #68b2ff;
}

.dark-mode .btn-primary {
  background: #4da3ff;
  border-color: #4da3ff;
  color: #fff;
}

.dark-mode .btn-outline-primary {
  border-color: #4da3ff;
  color: #4da3ff;
}

.dark-mode button,
.dark-mode  {
  color: #f4f7fb;
}
.dark-mode .theme-btn{
  color: #4da3ff;
}
.dark-mode .cert-card {
  background: rgba(22, 30, 42, 0.7);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
  border-radius: 10%;
  padding: 10px;
}

.dark-mode .cert-section,
.dark-mode .certificates-section,
.dark-mode .certificates,
.dark-mode .skills-section {
  background: #0f1724 !important;
}

.dark-mode .cert-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(6px);
  box-shadow: 0 8px 26px rgba(0, 0, 0, 0.4);
  color: var(--text);
}


.dark-mode .cert-card:hover {
  box-shadow: 0 22px 45px rgba(0, 0, 0, 0.6);
}

.dark-mode .footer-section {
  background: #060b12;
}

.dark-mode .footer-links ul li a:hover {
  color: #4da3ff;
}


.dark-mode input,
.dark-mode textarea,
.dark-mode select {
  background: #1d2633 !important;
  border-color: #3a475a !important;
  color: #fff !important;
}

.dark-mode label {
  color: #cfd7e3 !important;
  background: #1d2633 !important;
}

.dark-mode input:focus+label,
.dark-mode input:not(:placeholder-shown)+label,
.dark-mode textarea:focus+label,
.dark-mode textarea:not(:placeholder-shown)+label,
.dark-mode select:focus+label,
.dark-mode select:not([value=""])+label {
  color: #69a6ff !important;
  background: #1d2633 !important;
}


.form-message {
  margin-top: 1rem;
  text-align: center;
  font-weight: 600;
  font-family: 'Poppins', sans-serif;
  font-size: 1rem;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.form-message.show {
  opacity: 1;
  animation: fadeIn 0.4s forwards;
}

.form-message.hide {
  opacity: 0;
  animation: fadeOut 0.4s forwards;
}

.form-message.success { color: green; }
.form-message.error { color: red; }

@keyframes fadeIn {
  0% {opacity: 0; transform: translateY(-10px);}
  100% {opacity: 1; transform: translateY(0);}
}

@keyframes fadeOut {
  0% {opacity: 1; transform: translateY(0);}
  100% {opacity: 0; transform: translateY(-10px);}
}