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

/* ===== VARIABLES CSS ===== */
:root {
  --header-height: 4rem;

  /* ========== Colors ========== */
  --primary-color: #2563eb;
  --primary-color-alt: #1d4ed8;
  --secondary-color: #0ea5e9;
  --accent-color: #06b6d4;
  --text-color: #1f2937;
  --text-color-light: #6b7280;
  --white-color: #ffffff;
  --light-color: #f8fafc;
  --border-color: #e5e7eb;
  --shadow-color: rgba(0, 0, 0, 0.1);
  --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);

  /* ========== Font and typography ========== */
  --body-font: 'Inter', sans-serif;
  --title-font: 'Poppins', sans-serif;
  --biggest-font-size: 3rem;
  --h1-font-size: 2.25rem;
  --h2-font-size: 1.875rem;
  --h3-font-size: 1.5rem;
  --normal-font-size: 1rem;
  --small-font-size: 0.875rem;
  --smaller-font-size: 0.75rem;

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

  /* ========== Margins Bottom ========== */
  --mb-0-25: 0.25rem;
  --mb-0-5: 0.5rem;
  --mb-0-75: 0.75rem;
  --mb-1: 1rem;
  --mb-1-25: 1.25rem;
  --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;

  /* ========== Transitions ========== */
  --transition: all 0.3s ease;
  --transition-slow: all 0.5s ease;
}

/* Responsive typography */
@media screen and (max-width: 992px) {
  :root {
    --biggest-font-size: 2.5rem;
    --h1-font-size: 2rem;
    --h2-font-size: 1.5rem;
    --h3-font-size: 1.25rem;
    --normal-font-size: 0.938rem;
    --small-font-size: 0.813rem;
    --smaller-font-size: 0.75rem;
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0 0 var(--header-height) 0;
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
  background-color: var(--white-color);
  color: var(--text-color);
  line-height: 1.6;
}

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

ul {
  list-style: none;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

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

/* ===== REUSABLE CSS CLASSES ===== */
.container {
  max-width: 1200px;
  margin-left: var(--mb-1-5);
  margin-right: var(--mb-1-5);
}

.grid {
  display: grid;
}

.section {
  padding: 5rem 0 2rem;
}

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

.section__title {
  font-size: var(--h2-font-size);
  color: var(--text-color);
  margin-bottom: var(--mb-0-75);
  position: relative;
}

.section__title::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

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

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: var(--font-medium);
  font-size: var(--normal-font-size);
  transition: var(--transition);
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.btn--primary {
  background: var(--gradient-primary);
  color: var(--white-color);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.4);
}

.btn--secondary {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

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

/* ===== HEADER & NAV ===== */
.header {
  width: 100%;
  position: fixed;
  bottom: 0;
  left: 0;
  z-index: var(--z-fixed);
  background-color: var(--white-color);
  box-shadow: 0 -1px 4px var(--shadow-color);
  transition: var(--transition);
}

.nav {
  max-width: 1200px;
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav__logo-img {
  height: 2rem;
  width: auto;
}

.nav__menu {
  position: fixed;
  bottom: -100%;
  left: 0;
  width: 100%;
  background-color: var(--white-color);
  padding: 2rem 1.5rem 4rem;
  box-shadow: 0 -1px 4px var(--shadow-color);
  border-radius: 1.5rem 1.5rem 0 0;
  transition: var(--transition);
}

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

.nav__link {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: var(--small-font-size);
  color: var(--text-color);
  font-weight: var(--font-medium);
  transition: var(--transition);
}

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

.nav__close {
  position: absolute;
  right: 1.3rem;
  bottom: 0.5rem;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--primary-color);
}

.nav__close:hover {
  color: var(--primary-color-alt);
}

.nav__toggle {
  font-size: 1.1rem;
  cursor: pointer;
  color: var(--primary-color);
}

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

.nav__actions .btn {
  display: none;
}

/* Show menu */
.show-menu {
  bottom: 0;
}

/* Active link */
.active-link {
  color: var(--primary-color) !important;
}

/* Change background header */
.scroll-header {
  bottom: initial;
  top: 0;
  box-shadow: 0 1px 4px var(--shadow-color);
}

/* ===== HOME ===== */
.home {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  padding-top: 7rem;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.home__container {
  gap: 2rem;
  grid-template-columns: 1fr;
  align-items: center;
}

.home__content {
  text-align: center;
}

.home__title {
  font-size: var(--biggest-font-size);
  margin-bottom: var(--mb-1);
  font-weight: var(--font-bold);
}

.home__title-accent {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.home__description {
  margin-bottom: var(--mb-2);
  color: var(--text-color-light);
  font-size: var(--normal-font-size);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.home__credentials {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: var(--mb-2);
  flex-wrap: wrap;
}

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

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

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

.home__image {
  display: flex;
  justify-content: center;
  margin-top: var(--mb-2);
}

.home__img-wrapper {
  position: relative;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(37, 99, 235, 0.2);
}

.home__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.home__img-wrapper:hover .home__img {
  transform: scale(1.05);
}

.home__img-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  opacity: 0.1;
  transition: var(--transition);
}

.home__img-wrapper:hover .home__img-overlay {
  opacity: 0;
}

.home__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
}

.home__scroll-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: var(--white-color);
  color: var(--primary-color);
  box-shadow: 0 4px 12px var(--shadow-color);
  font-size: 1.2rem;
  animation: bounce 2s infinite;
}

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

/* ===== ABOUT ===== */
.about {
  background: var(--white-color);
}

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

.about__image {
  display: flex;
  justify-content: center;
}

.about__img-wrapper {
  position: relative;
  width: 350px;
  height: 400px;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 20px 40px var(--shadow-color);
}

.about__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.about__img-wrapper:hover .about__img {
  transform: scale(1.05);
}

.about__content {
  text-align: center;
}

.about__title {
  font-size: var(--h3-font-size);
  margin-bottom: var(--mb-1-5);
  color: var(--text-color);
}

.about__education {
  margin-bottom: var(--mb-2-5);
}

.education__item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: var(--mb-1-5);
  padding: 1.5rem;
  background: var(--light-color);
  border-radius: 0.75rem;
  transition: var(--transition);
}

.education__item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px var(--shadow-color);
}

.education__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background: var(--gradient-primary);
  color: var(--white-color);
  border-radius: 50%;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.education__content h4 {
  font-size: var(--normal-font-size);
  font-weight: var(--font-semi-bold);
  margin-bottom: var(--mb-0-25);
  color: var(--text-color);
}

.education__content p {
  color: var(--text-color-light);
  font-size: var(--small-font-size);
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1.5rem;
}

.stat__item {
  text-align: center;
  padding: 1.5rem;
  background: var(--gradient-primary);
  color: var(--white-color);
  border-radius: 0.75rem;
  transition: var(--transition);
}

.stat__item:hover {
  transform: translateY(-5px);
}

.stat__number {
  font-size: var(--h2-font-size);
  font-weight: var(--font-bold);
  margin-bottom: var(--mb-0-25);
}

.stat__label {
  font-size: var(--small-font-size);
  opacity: 0.9;
}

/* ===== SPECIALTIES ===== */
.specialties {
  background: var(--light-color);
}

.specialties__container {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.specialty__card {
  background: var(--white-color);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 10px 30px var(--shadow-color);
  transition: var(--transition);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.specialty__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
}

.specialty__card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(37, 99, 235, 0.15);
}

.specialty__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4rem;
  height: 4rem;
  background: var(--gradient-primary);
  color: var(--white-color);
  border-radius: 50%;
  font-size: 1.5rem;
  margin: 0 auto var(--mb-1);
}

.specialty__title {
  font-size: var(--h3-font-size);
  margin-bottom: var(--mb-1);
  color: var(--text-color);
}

.specialty__description {
  color: var(--text-color-light);
  margin-bottom: var(--mb-1-5);
  line-height: 1.6;
}

.specialty__features {
  text-align: left;
}

.specialty__features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: var(--mb-0-5);
  color: var(--text-color);
  font-size: var(--small-font-size);
}

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

/* ===== CONTACT ===== */
.contact {
  background: var(--white-color);
}

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

.contact__content {
  text-align: center;
}

.contact__title {
  font-size: var(--h3-font-size);
  margin-bottom: var(--mb-1-5);
  color: var(--text-color);
}

.contact__item {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: var(--mb-1-5);
  padding: 1.5rem;
  background: var(--light-color);
  border-radius: 0.75rem;
  transition: var(--transition);
}

.contact__item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px var(--shadow-color);
}

.contact__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background: var(--gradient-primary);
  color: var(--white-color);
  border-radius: 50%;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact__details h4 {
  font-size: var(--normal-font-size);
  font-weight: var(--font-semi-bold);
  margin-bottom: var(--mb-0-25);
  color: var(--text-color);
}

.contact__details a,
.contact__details p {
  color: var(--text-color-light);
  font-size: var(--small-font-size);
  transition: var(--transition);
}

.contact__details a:hover {
  color: var(--primary-color);
}

.contact__cta {
  margin-top: var(--mb-2-5);
  padding: 2rem;
  background: var(--gradient-primary);
  color: var(--white-color);
  border-radius: 1rem;
  text-align: center;
}

.contact__cta h3 {
  color: var(--white-color);
  margin-bottom: var(--mb-1);
}

.contact__cta p {
  margin-bottom: var(--mb-1-5);
  opacity: 0.9;
}

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

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

.contact__buttons .btn--primary:hover {
  background: var(--light-color);
}

.contact__buttons .btn--secondary {
  border-color: var(--white-color);
  color: var(--white-color);
}

.contact__buttons .btn--secondary:hover {
  background: var(--white-color);
  color: var(--primary-color);
}

.contact__image {
  display: flex;
  justify-content: center;
}

.contact__img-wrapper {
  position: relative;
  width: 250px;
  height: 300px;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 20px 40px var(--shadow-color);
}

.contact__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.contact__img-wrapper:hover .contact__img {
  transform: scale(1.05);
}

/* ===== FOOTER ===== */
.footer {
  background: #1f2937;
  color: var(--white-color);
  padding: 2.5rem 0 1rem;
}

.footer__container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  text-align: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.footer__column {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.footer__text {
  color: #d1d5db;
  margin-bottom: var(--mb-1);
  line-height: 1.6;
  font-size: var(--small-font-size);
}

.footer__info {
  color: #d1d5db;
  line-height: 1.8;
  font-size: var(--small-font-size);
}

.footer__info p {
  margin-bottom: 0.5rem;
}

.footer__bottom {
  border-top: 1px solid #374151;
  padding-top: var(--mb-1);
  margin-top: var(--mb-2);
  text-align: center;
}

.footer__copy {
  color: #9ca3af;
  font-size: var(--smaller-font-size);
}

.footer__logo-img {
  height: 2.5rem;
  width: auto;
  filter: brightness(0) invert(1);
  margin-bottom: var(--mb-1);
}

.footer__description {
  color: #9ca3af;
  margin-bottom: var(--mb-1-5);
  line-height: 1.6;
}



.footer__title {
  font-size: var(--h3-font-size);
  margin-bottom: var(--mb-1);
  color: var(--white-color);
}

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

.footer__link {
  color: #9ca3af;
  transition: var(--transition);
}

.footer__link:hover {
  color: var(--white-color);
  transform: translateX(5px);
}

.footer__contact-info {
  color: #9ca3af;
  line-height: 1.8;
}

.footer__bottom {
  border-top: 1px solid #374151;
  padding-top: var(--mb-1-5);
  text-align: center;
}

.footer__copy {
  color: #9ca3af;
  font-size: var(--small-font-size);
}

/* ===== SCROLL UP ===== */
.scrollup {
  position: fixed;
  right: 1rem;
  bottom: -20%;
  background: var(--gradient-primary);
  opacity: 0.8;
  padding: 0.3rem;
  border-radius: 0.4rem;
  z-index: var(--z-tooltip);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  color: var(--white-color);
  font-size: 1.2rem;
}

.scrollup:hover {
  background: var(--primary-color-alt);
  opacity: 1;
  transform: translateY(-3px);
}

/* Show scroll */
.show-scroll {
  bottom: 5rem;
}

/* ===== MEDIA QUERIES ===== */
/* For small devices */
@media screen and (max-width: 350px) {
  .container {
    margin-left: var(--mb-1);
    margin-right: var(--mb-1);
  }

  .nav__menu {
    padding: 2rem 0.25rem 4rem;
  }

  .nav__list {
    column-gap: 0;
  }

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

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

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

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

  .contact__buttons {
    flex-direction: column;
  }
}

/* For medium devices */
@media screen and (min-width: 568px) {
  .home__container,
  .about__container,
  .contact__container {
    grid-template-columns: repeat(2, 1fr);
  }

  .home__content {
    text-align: left;
  }

  .home__image {
    order: 1;
  }

  .home__content {
    order: 2;
  }

  .about__content {
    text-align: left;
  }

  .contact__content {
    text-align: left;
  }

  .footer__container {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

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

  body {
    margin: 0;
  }

  .section {
    padding: 6rem 0 2rem;
  }

  .header {
    top: 0;
    bottom: initial;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
  }

  .header,
  .main,
  .footer__container {
    padding: 0 1rem;
  }

  .nav {
    height: calc(var(--header-height) + 1.5rem);
    column-gap: 1rem;
  }

  .nav__menu {
    position: initial;
    background-color: transparent;
    box-shadow: none;
    border-radius: 0;
    padding: 0;
  }

  .nav__list {
    display: flex;
    column-gap: 2rem;
  }

  .nav__link {
    flex-direction: row;
    font-size: var(--normal-font-size);
  }

  .nav__close,
  .nav__toggle {
    display: none;
  }

  .nav__actions .btn {
    display: inline-flex;
  }

  .home {
    padding-top: 8rem;
  }

  .home__container {
    gap: 4rem;
  }

  .home__img-wrapper {
    width: 400px;
    height: 400px;
  }

  .about__img-wrapper {
    width: 400px;
    height: 450px;
  }

  .specialties__container {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact__img-wrapper {
    width: 300px;
    height: 350px;
  }

  .scrollup {
    right: 3rem;
  }

  .show-scroll {
    bottom: 3rem;
  }
}

/* For large devices */
@media screen and (min-width: 1024px) {
  .home__container,
  .about__container,
  .contact__container {
    column-gap: 5rem;
  }

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

  .footer__container {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media screen and (min-width: 1200px) {
  .specialties__container {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ===== VIDEOS SECTION ===== */
.videos {
  background: var(--light-color);
  padding: 5rem 0;
}

.videos__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.video__card {
  background: var(--white-color);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 10px 30px var(--shadow-color);
  transition: var(--transition);
}

.video__card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(37, 99, 235, 0.15);
}

.video__thumbnail {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.video__thumbnail iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.video__content {
  padding: 1.5rem;
}

.video__category {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: var(--small-font-size);
  font-weight: var(--font-medium);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.video__category.diabetes {
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary-color);
}

.video__category.weight {
  background: rgba(72, 187, 120, 0.1);
  color: #48bb78;
}

.video__category.health {
  background: rgba(159, 122, 234, 0.1);
  color: #9f7aea;
}

.video__title {
  font-size: var(--h3-font-size);
  font-weight: var(--font-semi-bold);
  color: var(--text-color);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.video__description {
  color: var(--text-color-light);
  font-size: var(--normal-font-size);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.video__stats {
  display: flex;
  gap: 1rem;
  font-size: var(--small-font-size);
  color: var(--text-color-light);
}

.video__stats span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.video__stats i {
  font-size: 0.875rem;
}

.videos__cta {
  text-align: center;
  margin-top: 3rem;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: var(--font-medium);
  font-size: var(--normal-font-size);
  transition: var(--transition);
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.button--primary {
  background: var(--gradient-primary);
  color: var(--white-color);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.button--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.4);
}

/* Responsive Videos */
@media screen and (max-width: 768px) {
  .videos__grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .video__thumbnail {
    height: 180px;
  }
  
  .video__content {
    padding: 1rem;
  }
}

@media screen and (min-width: 1024px) {
  .videos__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
  }
  
  .video__thumbnail {
    height: 220px;
  }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Animation classes */
.animate-fade-in-up {
  animation: fadeInUp 0.8s ease-out;
}

.animate-fade-in-left {
  animation: fadeInLeft 0.8s ease-out;
}

.animate-fade-in-right {
  animation: fadeInRight 0.8s ease-out;
}