/*==================== GOOGLE FONTS ====================*/
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/*==================== VARIABLES CSS ====================*/
:root {
  --header-height: 4.5rem;

  /*========== Colors ==========*/
  /* Professional Blue and White Theme */
  --primary-color: #1E40AF;
  --primary-light: #3B82F6;
  --primary-dark: #1E3A8A;
  --secondary-color: #60A5FA;
  --accent-color: #2563EB;
  
  --white-color: #FFFFFF;
  --text-color: #1F2937;
  --text-light: #6B7280;
  --text-lighter: #9CA3AF;
  
  --bg-color: #FFFFFF;
  --bg-gray: #F3F4F6;
  --bg-dark: #111827;
  
  --border-color: #E5E7EB;
  --shadow-color: rgba(0, 0, 0, 0.1);
  --shadow-hover: rgba(30, 64, 175, 0.2);

  /*========== Font and typography ==========*/
  --body-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  
  /* Responsive font sizes - Mobile First */
  --big-font-size: 2rem;
  --h1-font-size: 1.75rem;
  --h2-font-size: 1.5rem;
  --h3-font-size: 1.25rem;
  --normal-font-size: 1rem;
  --small-font-size: 0.875rem;
  --smaller-font-size: 0.813rem;

  /*========== Font weight ==========*/
  --font-light: 300;
  --font-regular: 400;
  --font-medium: 500;
  --font-semi-bold: 600;
  --font-bold: 700;
  --font-extra-bold: 800;

  /*========== Margins ==========*/
  --mb-0-25: 0.25rem;
  --mb-0-5: 0.5rem;
  --mb-0-75: 0.75rem;
  --mb-1: 1rem;
  --mb-1-5: 1.5rem;
  --mb-2: 2rem;
  --mb-2-5: 2.5rem;
  --mb-3: 3rem;

  /*========== Z-index ==========*/
  --z-tooltip: 10;
  --z-fixed: 100;
  --z-modal: 1000;
}

/* Responsive typography for tablets */
@media screen and (min-width: 768px) {
  :root {
    --big-font-size: 2.75rem;
    --h1-font-size: 2.25rem;
    --h2-font-size: 1.875rem;
    --h3-font-size: 1.5rem;
    --normal-font-size: 1.0625rem;
    --small-font-size: 0.9375rem;
    --smaller-font-size: 0.875rem;
  }
}

/* Responsive typography for desktop */
@media screen and (min-width: 1024px) {
  :root {
    --big-font-size: 3.5rem;
    --h1-font-size: 3rem;
    --h2-font-size: 2.25rem;
    --h3-font-size: 1.75rem;
    --normal-font-size: 1.125rem;
    --small-font-size: 1rem;
    --smaller-font-size: 0.9375rem;
  }
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  color: var(--text-color);
  font-weight: var(--font-bold);
  line-height: 1.2;
}

ul {
  list-style: none;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

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

button {
  cursor: pointer;
  border: none;
  outline: none;
  font-family: var(--body-font);
}

/*==================== REUSABLE CSS CLASSES ====================*/
.container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 0 2rem;
}

@media screen and (min-width: 768px) {
  .container {
    padding: 0 3rem;
  }
}

@media screen and (min-width: 1024px) {
  .container {
    max-width: 1400px;
    padding: 0 4rem;
  }
}

@media screen and (min-width: 1440px) {
  .container {
    max-width: 1600px;
    padding: 0 6rem;
  }
}

.section {
  padding: 4rem 0;
}

@media screen and (min-width: 768px) {
  .section {
    padding: 5rem 0;
  }
}

@media screen and (min-width: 1024px) {
  .section {
    padding: 6rem 0;
  }
}

.section--gray {
  background-color: var(--bg-gray);
}

.section__header {
  text-align: center;
  margin-bottom: var(--mb-3);
}

.section__title {
  font-size: var(--h2-font-size);
  color: var(--primary-color);
  margin-bottom: var(--mb-1);
  font-weight: var(--font-extra-bold);
}

.section__description {
  font-size: var(--normal-font-size);
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/*==================== BUTTONS ====================*/
.button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  border-radius: 0.5rem;
  font-weight: var(--font-semi-bold);
  font-size: var(--normal-font-size);
  transition: all 0.3s ease;
  cursor: pointer;
}

.button--primary {
  background-color: var(--primary-color);
  color: var(--white-color);
  box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
}

.button--primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(30, 64, 175, 0.4);
}

.button--outline {
  background-color: transparent;
  color: var(--white-color);
  border: 2px solid var(--white-color);
}

.button--outline:hover {
  background-color: var(--white-color);
  color: var(--primary-color);
}

.button--white {
  background-color: var(--white-color);
  color: var(--primary-color);
}

.button--white:hover {
  background-color: var(--bg-gray);
  transform: translateY(-2px);
}

/*==================== HEADER & NAV ====================*/
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px var(--shadow-color);
  z-index: var(--z-fixed);
  transition: all 0.3s ease;
}

.scroll-header {
  box-shadow: 0 4px 20px var(--shadow-color);
}

.nav {
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: var(--font-bold);
  font-size: var(--h3-font-size);
  color: var(--primary-color);
}

.logo-img {
  width: 40px;
  height: 40px;
}

.logo-text {
  font-weight: var(--font-extra-bold);
  font-size: var(--normal-font-size);
  letter-spacing: 0.5px;
}

/* Responsive logo text sizing */
@media screen and (max-width: 768px) {
  .logo-text {
    font-size: var(--small-font-size);
    letter-spacing: 0.3px;
  }
}

@media screen and (max-width: 480px) {
  .logo-text {
    font-size: var(--smaller-font-size);
    letter-spacing: 0.2px;
  }
}

.nav__toggle {
  font-size: 1.5rem;
  color: var(--primary-color);
  cursor: pointer;
  display: none;
}

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

.nav__link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-color);
  font-weight: var(--font-medium);
  font-size: var(--normal-font-size);
  padding: 0.5rem 0;
  position: relative;
}

.nav__link i {
  font-size: 1.1rem;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width 0.3s ease;
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.nav__link:hover,
.nav__link.active {
  color: var(--primary-color);
}

.nav__close {
  display: none;
}

/* Mobile Navigation */
@media screen and (max-width: 768px) {
  .nav__toggle {
    display: block;
  }

  .nav__menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100vh;
    background-color: var(--white-color);
    box-shadow: -2px 0 10px var(--shadow-color);
    padding: 2rem;
    transition: right 0.4s ease;
  }

  .nav__menu.show-menu {
    right: 0;
  }

  .nav__list {
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 3rem;
  }

  .nav__link {
    font-size: var(--h3-font-size);
  }

  .nav__close {
    display: block;
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 1.5rem;
    color: var(--primary-color);
    cursor: pointer;
  }
}

/*==================== HERO SECTION ====================*/
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: var(--header-height);
}

.hero__background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero__bg-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.95) 0%, rgba(37, 99, 235, 0.85) 100%);
}

.hero__container {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2rem 0;
}

.hero__content {
  max-width: 900px;
  margin: 0 auto;
}

.hero__title {
  font-size: var(--big-font-size);
  color: var(--white-color);
  margin-bottom: var(--mb-1);
  font-weight: var(--font-extra-bold);
}

.hero__subtitle {
  font-size: var(--h2-font-size);
  color: var(--secondary-color);
  margin-bottom: var(--mb-1-5);
  font-weight: var(--font-semi-bold);
}

.hero__description {
  font-size: var(--normal-font-size);
  color: var(--white-color);
  margin-bottom: var(--mb-2-5);
  line-height: 1.8;
  opacity: 0.95;
}

.hero__buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.scroll-down {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.scroll-down a {
  color: var(--white-color);
  font-size: 1.5rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

/*==================== PAGE HEADER ====================*/
.page-header {
  position: relative;
  min-height: 50vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: var(--header-height);
}

.page-header__background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.page-header__bg-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-header__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.9) 0%, rgba(37, 99, 235, 0.8) 100%);
}

.page-header__content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.page-header__title {
  font-size: var(--big-font-size);
  color: var(--white-color);
  margin-bottom: var(--mb-1);
  font-weight: var(--font-extra-bold);
}

.page-header__subtitle {
  font-size: var(--h3-font-size);
  color: var(--secondary-color);
  font-weight: var(--font-medium);
}

/*==================== HIGHLIGHTS ====================*/
.highlights__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.highlight-card {
  background-color: var(--white-color);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 20px var(--shadow-color);
  text-align: center;
  transition: all 0.3s ease;
}

.highlight-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 8px 30px var(--shadow-hover);
}

.highlight-card__icon {
  width: 70px;
  height: 70px;
  margin: 0 auto var(--mb-1);
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white-color);
  font-size: 2rem;
}

.highlight-card__title {
  font-size: var(--h3-font-size);
  color: var(--primary-color);
  margin-bottom: var(--mb-0-5);
}

.highlight-card__description {
  color: var(--text-light);
  font-size: var(--normal-font-size);
}

/*==================== EXPERTISE ====================*/
.expertise__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.expertise-card {
  background-color: var(--white-color);
  padding: 2rem;
  border-radius: 1rem;
  border: 2px solid var(--border-color);
  transition: all 0.3s ease;
}

.expertise-card:hover {
  border-color: var(--primary-color);
  transform: translateX(10px);
  box-shadow: 0 8px 30px var(--shadow-hover);
}

.expertise-card__icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white-color);
  font-size: 1.75rem;
  margin-bottom: var(--mb-1);
}

.expertise-card__title {
  font-size: var(--h3-font-size);
  color: var(--text-color);
  margin-bottom: var(--mb-0-75);
}

.expertise-card__description {
  color: var(--text-light);
  line-height: 1.7;
}

/*==================== CTA SECTION ====================*/
.cta {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.cta__content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2rem 0;
}

.cta__title {
  font-size: var(--h1-font-size);
  color: var(--white-color);
  margin-bottom: var(--mb-1);
}

.cta__description {
  font-size: var(--normal-font-size);
  color: var(--white-color);
  margin-bottom: var(--mb-2);
  opacity: 0.95;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.cta__buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/*==================== ABOUT PAGE ====================*/
.about-intro {
  padding: 4rem 0;
}

.about-intro__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

@media screen and (min-width: 768px) {
  .about-intro__grid {
    grid-template-columns: 1.2fr 1fr;
  }
}

.about-intro__text {
  margin-bottom: var(--mb-1-5);
  color: var(--text-light);
  line-height: 1.8;
}

.about-intro__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
  margin-top: var(--mb-2);
}

.stat-item {
  text-align: center;
  padding: 1.5rem;
  background-color: var(--bg-gray);
  border-radius: 0.75rem;
}

.stat-item__number {
  font-size: var(--h1-font-size);
  color: var(--primary-color);
  font-weight: var(--font-extra-bold);
  margin-bottom: var(--mb-0-5);
}

.stat-item__label {
  color: var(--text-light);
  font-size: var(--normal-font-size);
}

.about-intro__image-wrapper {
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 8px 30px var(--shadow-color);
}

.about-intro__img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/*==================== TIMELINE ====================*/
.timeline__container {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.timeline__container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 30px;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary-color), var(--primary-light));
}

@media screen and (min-width: 768px) {
  .timeline__container::before {
    left: 50%;
    transform: translateX(-50%);
  }
}

.timeline__item {
  position: relative;
  padding-left: 70px;
  padding-bottom: 3rem;
}

@media screen and (min-width: 768px) {
  .timeline__item {
    width: 50%;
    padding-left: 0;
    padding-right: 40px;
  }

  .timeline__item:nth-child(even) {
    margin-left: 50%;
    padding-left: 40px;
    padding-right: 0;
  }
}

.timeline__marker {
  position: absolute;
  left: 21px;
  top: 0;
  width: 20px;
  height: 20px;
  background-color: var(--primary-color);
  border: 4px solid var(--white-color);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--primary-light);
}

@media screen and (min-width: 768px) {
  .timeline__marker {
    left: auto;
    right: -10px;
  }

  .timeline__item:nth-child(even) .timeline__marker {
    right: auto;
    left: -10px;
  }
}

.timeline__content {
  background-color: var(--white-color);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 20px var(--shadow-color);
  transition: all 0.3s ease;
}

.timeline__content:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px var(--shadow-hover);
}

.timeline__date {
  display: inline-block;
  padding: 0.5rem 1rem;
  background-color: var(--primary-color);
  color: var(--white-color);
  border-radius: 0.5rem;
  font-size: var(--small-font-size);
  font-weight: var(--font-semi-bold);
  margin-bottom: var(--mb-1);
}

.timeline__title {
  font-size: var(--h3-font-size);
  color: var(--primary-color);
  margin-bottom: var(--mb-0-5);
}

.timeline__company {
  font-size: var(--normal-font-size);
  color: var(--text-color);
  font-weight: var(--font-semi-bold);
  margin-bottom: var(--mb-1);
}

.timeline__list {
  list-style: none;
  padding-left: 0;
}

.timeline__list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: var(--mb-0-75);
  color: var(--text-light);
  line-height: 1.6;
}

.timeline__list li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: var(--font-bold);
}

/*==================== SKILLS ====================*/
.skills__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media screen and (min-width: 768px) {
  .skills__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media screen and (min-width: 1024px) {
  .skills__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.skill-category {
  background-color: var(--white-color);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 20px var(--shadow-color);
  transition: all 0.3s ease;
}

.skill-category:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px var(--shadow-hover);
}

.skill-category__title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: var(--h3-font-size);
  color: var(--primary-color);
  margin-bottom: var(--mb-1-5);
}

.skill-category__title i {
  font-size: 1.5rem;
}

.skill-category__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.skill-tag {
  display: inline-block;
  padding: 0.5rem 1rem;
  background-color: var(--bg-gray);
  color: var(--text-color);
  border-radius: 0.5rem;
  font-size: var(--small-font-size);
  font-weight: var(--font-medium);
  transition: all 0.3s ease;
}

.skill-tag:hover {
  background-color: var(--primary-color);
  color: var(--white-color);
  transform: translateY(-2px);
}

/*==================== EDUCATION ====================*/
.education__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media screen and (min-width: 768px) {
  .education__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.education__section h2 {
  margin-bottom: var(--mb-2);
}

.education-card {
  background-color: var(--white-color);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 20px var(--shadow-color);
  display: flex;
  gap: 1.5rem;
  transition: all 0.3s ease;
}

.education-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px var(--shadow-hover);
}

.education-card__icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white-color);
  font-size: 1.75rem;
  flex-shrink: 0;
}

.education-card__degree {
  font-size: var(--h3-font-size);
  color: var(--primary-color);
  margin-bottom: var(--mb-0-5);
}

.education-card__major,
.education-card__university,
.education-card__year {
  color: var(--text-light);
  margin-bottom: var(--mb-0-25);
}

.certifications__list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.certification-card {
  background-color: var(--white-color);
  padding: 1.5rem;
  border-radius: 1rem;
  box-shadow: 0 4px 20px var(--shadow-color);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  transition: all 0.3s ease;
}

.certification-card:hover {
  transform: translateX(10px);
  box-shadow: 0 8px 30px var(--shadow-hover);
}

.certification-card__icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white-color);
  font-size: 1.5rem;
  flex-shrink: 0;
}

.certification-card__title {
  font-size: var(--h3-font-size);
  color: var(--primary-color);
  margin-bottom: var(--mb-0-25);
}

.certification-card__subtitle {
  color: var(--text-light);
  font-size: var(--normal-font-size);
}

/*==================== PROJECTS ====================*/
.projects__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

@media screen and (min-width: 768px) {
  .projects__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media screen and (min-width: 1200px) {
  .projects__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.project-card {
  background-color: var(--white-color);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 4px 20px var(--shadow-color);
  transition: all 0.3s ease;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 40px var(--shadow-hover);
}

.project-card__image {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.project-card:hover .project-card__image img {
  transform: scale(1.1);
}

.project-card__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.5) 100%);
  display: flex;
  align-items: flex-end;
  padding: 1rem;
}

.project-card__badge {
  background-color: var(--primary-color);
  color: var(--white-color);
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  font-size: var(--small-font-size);
  font-weight: var(--font-semi-bold);
}

.project-card__content {
  padding: 1.5rem;
}

.project-card__title {
  font-size: var(--h3-font-size);
  color: var(--primary-color);
  margin-bottom: var(--mb-1);
}

.project-card__description {
  color: var(--text-light);
  margin-bottom: var(--mb-1-5);
  line-height: 1.7;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--mb-1);
}

.tag {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  background-color: var(--bg-gray);
  color: var(--text-color);
  border-radius: 0.35rem;
  font-size: var(--smaller-font-size);
  font-weight: var(--font-medium);
}

.project-card__highlights {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.highlight {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-light);
  font-size: var(--small-font-size);
}

.highlight i {
  color: var(--primary-color);
}

/*==================== ACHIEVEMENTS ====================*/
.achievements__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.achievement-card {
  background-color: var(--white-color);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 20px var(--shadow-color);
  text-align: center;
  transition: all 0.3s ease;
}

.achievement-card:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 30px var(--shadow-hover);
}

.achievement-card__icon {
  width: 70px;
  height: 70px;
  margin: 0 auto var(--mb-1);
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white-color);
  font-size: 2rem;
}

.achievement-card__title {
  font-size: var(--h3-font-size);
  color: var(--primary-color);
  margin-bottom: var(--mb-0-75);
}

.achievement-card__description {
  color: var(--text-light);
  line-height: 1.6;
}

/*==================== MENTORING PAGE ====================*/
.mentoring-intro {
  padding: 4rem 0;
}

.mentoring-intro__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

@media screen and (min-width: 768px) {
  .mentoring-intro__grid {
    grid-template-columns: 1.2fr 1fr;
  }
}

.mentoring-intro__text {
  margin-bottom: var(--mb-1-5);
  color: var(--text-light);
  line-height: 1.8;
}

.mentoring-intro__image-wrapper {
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 8px 30px var(--shadow-color);
}

.mentoring-intro__img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/*==================== SERVICES ====================*/
.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media screen and (min-width: 768px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media screen and (min-width: 1024px) {
  .services__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.service-card {
  background-color: var(--white-color);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 20px var(--shadow-color);
  transition: all 0.3s ease;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 40px var(--shadow-hover);
}

.service-card__icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white-color);
  font-size: 1.75rem;
  margin-bottom: var(--mb-1);
}

.service-card__title {
  font-size: var(--h3-font-size);
  color: var(--primary-color);
  margin-bottom: var(--mb-1);
}

.service-card__description {
  color: var(--text-light);
  margin-bottom: var(--mb-1-5);
  line-height: 1.7;
}

.service-card__list {
  list-style: none;
  padding-left: 0;
}

.service-card__list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: var(--mb-0-75);
  color: var(--text-light);
  font-size: var(--normal-font-size);
}

.service-card__list li i {
  color: var(--primary-color);
  font-size: 0.875rem;
}

/*==================== BENEFITS ====================*/
.benefits__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media screen and (min-width: 768px) {
  .benefits__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.benefit-card {
  background-color: var(--white-color);
  padding: 2rem;
  border-radius: 1rem;
  border-left: 4px solid var(--primary-color);
  box-shadow: 0 4px 20px var(--shadow-color);
  transition: all 0.3s ease;
}

.benefit-card:hover {
  transform: translateX(10px);
  box-shadow: 0 8px 30px var(--shadow-hover);
}

.benefit-card__number {
  font-size: var(--h1-font-size);
  color: var(--primary-light);
  font-weight: var(--font-extra-bold);
  opacity: 0.3;
  margin-bottom: var(--mb-0-5);
}

.benefit-card__title {
  font-size: var(--h3-font-size);
  color: var(--primary-color);
  margin-bottom: var(--mb-0-75);
}

.benefit-card__description {
  color: var(--text-light);
  line-height: 1.7;
}

/*==================== TESTIMONIALS ====================*/
.testimonials__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media screen and (min-width: 768px) {
  .testimonials__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media screen and (min-width: 1024px) {
  .testimonials__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.testimonial-card {
  background-color: var(--white-color);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 20px var(--shadow-color);
  transition: all 0.3s ease;
}

.testimonial-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px var(--shadow-hover);
}

.testimonial-card__icon {
  font-size: 2rem;
  color: var(--primary-light);
  margin-bottom: var(--mb-1);
}

.testimonial-card__text {
  color: var(--text-light);
  font-style: italic;
  line-height: 1.8;
  margin-bottom: var(--mb-1-5);
}

.testimonial-card__author {
  border-top: 2px solid var(--border-color);
  padding-top: var(--mb-1);
}

.testimonial-card__name {
  font-size: var(--h3-font-size);
  color: var(--text-color);
  margin-bottom: var(--mb-0-25);
}

.testimonial-card__role {
  color: var(--text-light);
  font-size: var(--small-font-size);
}

/*==================== FOOTER ====================*/
.footer {
  background: linear-gradient(135deg, var(--bg-dark) 0%, #1E3A8A 100%);
  color: var(--white-color);
  padding: 3rem 0 1.5rem;
}

.footer__container {
  margin-bottom: var(--mb-2);
}

.footer__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media screen and (min-width: 768px) {
  .footer__content {
    grid-template-columns: 2fr 1fr 1.5fr 1fr;
  }
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: var(--font-bold);
  font-size: var(--h3-font-size);
  color: var(--white-color);
  margin-bottom: var(--mb-1);
}

.footer__logo-img {
  width: 35px;
  height: 35px;
}

.footer__logo-text {
  font-weight: var(--font-extra-bold);
  font-size: var(--normal-font-size);
  letter-spacing: 0.5px;
}

/* Responsive footer logo text sizing */
@media screen and (max-width: 768px) {
  .footer__logo-text {
    font-size: var(--small-font-size);
    letter-spacing: 0.3px;
  }
}

.footer__description {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.7;
  margin-bottom: var(--mb-1);
}

.footer__title {
  font-size: var(--h3-font-size);
  margin-bottom: var(--mb-1);
  font-weight: var(--font-semi-bold);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer__link {
  color: rgba(255, 255, 255, 0.8);
  transition: all 0.3s ease;
}

.footer__link:hover {
  color: var(--secondary-color);
  padding-left: 0.5rem;
}

.footer__contact {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer__contact li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: rgba(255, 255, 255, 0.8);
}

.footer__contact li i {
  color: var(--secondary-color);
  font-size: 1.1rem;
}

.footer__contact a {
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.3s ease;
}

.footer__contact a:hover {
  color: var(--secondary-color);
}

.footer__social {
  display: flex;
  gap: 1rem;
}

.footer__social-link {
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white-color);
  font-size: 1.25rem;
  transition: all 0.3s ease;
}

.footer__social-link:hover {
  background-color: var(--primary-light);
  transform: translateY(-5px);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--mb-1-5);
  text-align: center;
}

.footer__copy {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--small-font-size);
}

/*==================== WHATSAPP FLOATING BUTTON ====================*/
.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #25D366, #128C7E);
  color: var(--white-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5);
  z-index: var(--z-tooltip);
  transition: all 0.3s ease;
  animation: pulse 2s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(37, 211, 102, 0.7);
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5);
  }
  50% {
    box-shadow: 0 4px 30px rgba(37, 211, 102, 0.8);
  }
}

/*==================== SCROLL TO TOP BUTTON ====================*/
.scroll-top {
  position: fixed;
  bottom: 2rem;
  left: 2rem;
  width: 50px;
  height: 50px;
  background-color: var(--primary-color);
  color: var(--white-color);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 4px 20px var(--shadow-hover);
  z-index: var(--z-tooltip);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.scroll-top.show-scroll {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background-color: var(--primary-dark);
  transform: translateY(-5px);
}

/*==================== RESPONSIVE ====================*/
@media screen and (max-width: 350px) {
  .container {
    width: 95%;
  }

  .hero__buttons,
  .cta__buttons {
    flex-direction: column;
    width: 100%;
  }

  .button {
    width: 100%;
    justify-content: center;
  }
}

@media screen and (max-width: 768px) {
  .whatsapp-float {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 55px;
    height: 55px;
    font-size: 1.75rem;
  }

  .scroll-top {
    bottom: 1.5rem;
    left: 1.5rem;
    width: 45px;
    height: 45px;
    font-size: 1.25rem;
  }
}

/*==================== ANIMATIONS ====================*/
@media (prefers-reduced-motion: no-preference) {
  * {
    scroll-behavior: smooth;
  }
}

/*==================== PRINT STYLES ====================*/
@media print {
  .header,
  .whatsapp-float,
  .scroll-top,
  .nav__toggle {
    display: none;
  }

  body {
    background-color: white;
    color: black;
  }
}

/*==================== ACCESSIBILITY ====================*/
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Focus styles for keyboard navigation */
*:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

a:focus,
button:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/*==================== VITHMINDS AI PLATFORM ARCHITECTURE ====================*/
.vithminds-architecture {
  background: linear-gradient(135deg, #F3F4F6 0%, #E5E7EB 100%);
  padding: 5rem 0;
}

.architecture-overview {
  margin-top: 3rem;
}

.architecture-overview__intro {
  background-color: var(--white-color);
  padding: 2.5rem;
  border-radius: 1rem;
  box-shadow: 0 4px 20px var(--shadow-color);
  margin-bottom: 3rem;
  border-left: 5px solid var(--primary-color);
}

.architecture-overview__title {
  font-size: var(--h2-font-size);
  color: var(--primary-color);
  margin-bottom: var(--mb-1);
  font-weight: var(--font-extra-bold);
}

.architecture-overview__text {
  color: var(--text-light);
  line-height: 1.8;
  font-size: var(--normal-font-size);
}

/* Architecture Components Grid */
.architecture-components {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 4rem;
}

@media screen and (min-width: 768px) {
  .architecture-components {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media screen and (min-width: 1024px) {
  .architecture-components {
    grid-template-columns: repeat(3, 1fr);
  }
}

.architecture-card {
  background-color: var(--white-color);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 20px var(--shadow-color);
  transition: all 0.3s ease;
  border-top: 4px solid var(--primary-light);
}

.architecture-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 40px var(--shadow-hover);
  border-top-color: var(--primary-color);
}

.architecture-card__header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: var(--mb-1-5);
}

.architecture-card__icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white-color);
  font-size: 1.5rem;
  flex-shrink: 0;
}

.architecture-card__title {
  font-size: var(--h3-font-size);
  color: var(--text-color);
  font-weight: var(--font-bold);
}

.architecture-card__description {
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: var(--mb-1-5);
}

.architecture-card__features {
  list-style: none;
  padding-left: 0;
}

.architecture-card__features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: var(--mb-0-75);
  color: var(--text-light);
  font-size: var(--small-font-size);
}

.architecture-card__features i {
  color: var(--primary-color);
  font-size: 0.75rem;
}

/* Technology Stack */
.tech-stack {
  background-color: var(--white-color);
  padding: 2.5rem;
  border-radius: 1rem;
  box-shadow: 0 4px 20px var(--shadow-color);
  margin-bottom: 4rem;
}

.tech-stack__title {
  font-size: var(--h2-font-size);
  color: var(--primary-color);
  margin-bottom: var(--mb-2);
  text-align: center;
  font-weight: var(--font-extra-bold);
}

.tech-stack__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media screen and (min-width: 768px) {
  .tech-stack__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media screen and (min-width: 1024px) {
  .tech-stack__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.tech-stack__category {
  text-align: center;
}

.tech-stack__category-title {
  font-size: var(--h3-font-size);
  color: var(--text-color);
  margin-bottom: var(--mb-1);
  font-weight: var(--font-semi-bold);
}

.tech-stack__items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.tech-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: var(--white-color);
  border-radius: 0.5rem;
  font-size: var(--small-font-size);
  font-weight: var(--font-semi-bold);
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(30, 64, 175, 0.3);
}

.tech-badge:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(30, 64, 175, 0.5);
}

/* Key Capabilities */
.key-capabilities {
  background-color: var(--white-color);
  padding: 2.5rem;
  border-radius: 1rem;
  box-shadow: 0 4px 20px var(--shadow-color);
}

.key-capabilities__title {
  font-size: var(--h2-font-size);
  color: var(--primary-color);
  margin-bottom: var(--mb-2);
  text-align: center;
  font-weight: var(--font-extra-bold);
}

.capabilities-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media screen and (min-width: 768px) {
  .capabilities-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media screen and (min-width: 1024px) {
  .capabilities-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.capability-item {
  text-align: center;
  padding: 1.5rem;
  border-radius: 0.75rem;
  transition: all 0.3s ease;
  background-color: var(--bg-gray);
}

.capability-item:hover {
  background-color: var(--primary-light);
  transform: translateY(-5px);
}

.capability-item:hover i,
.capability-item:hover h4,
.capability-item:hover p {
  color: var(--white-color);
}

.capability-item i {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: var(--mb-1);
  transition: color 0.3s ease;
}

.capability-item h4 {
  font-size: var(--h3-font-size);
  color: var(--text-color);
  margin-bottom: var(--mb-0-5);
  font-weight: var(--font-semi-bold);
  transition: color 0.3s ease;
}

.capability-item p {
  color: var(--text-light);
  font-size: var(--small-font-size);
  line-height: 1.6;
  transition: color 0.3s ease;
}

/* Featured Project Card Styling */
.project-card--featured {
  border: 3px solid var(--primary-color);
  position: relative;
}

.project-card--featured::before {
  content: '⭐ Featured';
  position: absolute;
  top: -15px;
  left: 20px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: var(--white-color);
  padding: 0.5rem 1.5rem;
  border-radius: 2rem;
  font-size: var(--small-font-size);
  font-weight: var(--font-bold);
  box-shadow: 0 4px 12px rgba(30, 64, 175, 0.4);
  z-index: 1;
}

.project-card__badge--featured {
  background: linear-gradient(135deg, #10B981, #059669);
  animation: pulse-badge 2s infinite;
}

@keyframes pulse-badge {
  0%, 100% {
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
  }
  50% {
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.8);
  }
}

/* Responsive Adjustments */
@media screen and (max-width: 768px) {
  .architecture-overview__intro {
    padding: 1.5rem;
  }

  .tech-stack,
  .key-capabilities {
    padding: 1.5rem;
  }

  .architecture-card {
    padding: 1.5rem;
  }
}