* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  text-decoration: none;
  list-style: none;
  border: none;
  outline: none;
  scroll-behavior: smooth;
  font-family: -apple-system, sans-serif;
}
:root {
  --bg-color: #000; /* this the color of background we assign it in var called "bg-color"*/
  --snd-bg-color: #111; /* this the secondary color of background we assign it in var called "snd-color"*/
  --text-color: #fff; /* this the color of the text we assign it in var called "text-color"*/
  --main-color: #45ffca; /* this a  special color can use with btn links, we assign it in var called "main-color"*/
}
html {
  font-size: 62.5%;
  overflow-x: hidden;
}
body {
  background-color: var(--bg-color);
  color: var(--text-color);
}
section {
  min-height: 100vh;
  padding: 10rem 8% 2rem;
}
/* header section style */

header {
  position: fixed;
  width: 100%;
  top: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem 9%;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  transition: all 0.5s ease;
}
.logo {
  font-size: 3rem;
  color: var(--text-color);
  font-weight: 800;
  cursor: pointer;
  transition: 0.3s ease-in-out;
}
.logo:hover {
  transform: scale(1.1);
}
span {
  color: var(--main-color);
}
.nav-bar {
  display: flex;
}
.nav-bar a {
  font-size: 1.8rem;
  font-weight: 500;
  color: var(--text-color);
  margin-left: 4rem;
  transition: all 0.5s ease;
  border-bottom: 3px solid transparent;
}
.nav-bar a:hover,
.nav-bar.active {
  color: var(--main-color);
  border-bottom: 3px solid var(--main-color);
}
.nav-btn {
  display: inline-block; /* Allows height and width while staying inline */
  padding: 1rem 2.8rem;
  background: transparent;
  color: var(--main-color);
  border: 2px solid var(--main-color);
  border-radius: 1rem;
  font-size: 1.6rem;
  font-weight: 600;
  transition: all 0.5s ease; /* Fixed syntax */
}

.nav-btn:hover {
  background-color: var(--main-color);
  color: var(--text-color);
  box-shadow: 0 0 18px var(--main-color);
}
#menu-icon {
  font-size: 3.6rem;
  color: var(--main-color);
  cursor: pointer;
  display: none;
}
/* home section style */

.home {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}
.home-content h3 {
  font-size: 5rem;
  font-weight: 700;
}
.home-content span {
  font-size: 4rem;
  font-weight: 550;
}
span {
  color: var(--main-color);
}
.home-content h1 {
  font-size: 5.6rem;
  font-weight: 700;
  line-height: 1.3;
}
.home-img img {
  width: 45vw;
  max-width: 80%;
}
.home-img::before {
  content: "FITNESS";
  position: absolute;
  top: 10%;
  left: 30%;
  transform: translateX(-50%);
  font-size: 20rem;
  font-weight: 400;
  line-height: 20rem;
  color: var(--text-color);
  opacity: 0.1;
  z-index: -1;
}
.home-content p {
  font-size: 1.6rem;
  margin-bottom: 2rem;
  margin-top: 2rem;
}
.btn {
  display: inline-block;
  padding: 1rem 2.8rem;
  background-color: var(--main-color);
  border-radius: 1rem;
  box-shadow: none;
  font-size: 1.6rem;
  color: var(--bg-color);
  letter-spacing: 0.1rem;
  font-weight: 600;
  transition: 0.5s ease;
  cursor: pointer;
}
.btn:hover {
  color: var(--text-color);
  box-shadow: 0 0 1.6rem var(--main-color);
}
/* services section */
.srevices {
  background-color: var(--snd-bg-color);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.heading {
  font-size: 6.5rem;
  font-weight: 700;
  margin-bottom: 30px;
}
.services-content {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
}
.row {
  width: 425px;
  height: 325px;
  margin: 25px 20px;
  padding: 10px;
  border-radius: 25px;
  border: 2px solid black;
  box-shadow: 1px 1px 10px var(--main-color);
  transition: all 0.5s ease;
}
.row img {
  width: 19vw;
  margin: 8px 18px 0 18px;
  border-radius: 20px;
}
.row h4 {
  font-size: 2.6rem;
  margin: 10px 0 0 25px;
}
.row:hover {
  transform: scale(1.1);
  border: 1px solid var(--main-color);
}
.about {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
}

.about-img img {
  width: 50vw;
  border: 2px solid var(--text-color);
}
.about-dtls {
  padding: 0 3rem;
}
.about-dtls h2 {
  font-size: 6rem;
  text-align: left;
  line-height: 1.2;
}
.about p {
  font-size: 1.6rem;
  margin: 2rem 0 2rem;
}

.plans {
  background-color: var(--snd-bg-color);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.plans-content {
  display: flex;
  justify-content: center;
  gap: 50px;
  flex-wrap: wrap;
}
.cards {
  border: 2px solid black;
  border-radius: 30px;
  box-shadow: 1px 1px 10px var(--main-color);
  transition: all 0.5s ease;
  width: 30%;
  min-width: 450px;
  height: 380px;
}
.cards h3 {
  font-size: 4rem;
  margin: 25px 0 10px 30px;
  font-weight: 600;
}
.cards h2 {
  font-size: 4.4rem;
  margin: 0 0 15px 30px;
  font-weight: 600;
}
.cards ul li {
  list-style-type: disc;
  margin: 0 0 15px 35px;
  font-size: 1.5rem;
  font-weight: 600;
}
.cards a {
  display: inline-block;
  color: var(--text-color);
  font-size: 22px;
  font-weight: 700;
  padding: 7px 0;
  margin-left: 25px;
  border-bottom: 2px solid #5d6c83;
  transition: all 0.5s ease;
}
.cards i {
  vertical-align: middle;
  font-size: 25px;
  color: var(--main-color);
  margin-left: 5px;
}
.cards a:hover {
  border-bottom: 2px solid var(--main-color);
  cursor: pointer;
}

.cards:hover {
  border: 1px solid var(--main-color);
  transform: translateY(-5px) scale(1.03);
}
.review {
  background-color: var(--bg-color);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.review-box {
  display: flex;
  justify-content: center;
  gap: 50px;
  margin-top: 15px;
}
.review-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-color: var(--snd-bg-color);
  gap: 15px;
  width: 30%;
  border: 3px solid rgba(238, 238, 238, 0.3);
  border-radius: 2rem;
  min-width: 450px;
  height: 450px;
  transition: 0.4s ease-in-out;
}
.review-content h3 {
  font-size: 3.5rem;
  font-weight: 600;
  margin: 15px 0 0 26px;
}

.reviewer img {
  width: 15rem;
  border-radius: 50%;
  border: 3px solid var(--main-color);
}
.review-content.stars {
  margin-right: 8px;
}
.review-content .stars #star {
  color: gold;
  font-size: 2rem;
  margin-right: 3px;
}
.review-content p {
  font-size: 15px;
  line-height: 2.5rem;
  margin-left: 6rem;
}
.review-content:hover {
  border: 3px solid var(--main-color);
  transform: translateY(-5px) scale(1.03);
  cursor: pointer;
}
footer {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-color: var(--snd-bg-color);
  height: 150px;
}
.social-icons {
  text-align: center;
  padding-bottom: 10px;
  color: var(--main-color);
  margin-top: 12px;
}
.social-icons a {
  display: inline-block;
  font-size: 25px;
  color: var(--main-color);
  border: 2px solid var(--main-color);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  margin: 0 10px;
  line-height: 42px;
  transition: 0.3s ease-in-out;
}
footer .social-icons a:hover {
  transform: scale(1.2) translateY(-10px);
  background-color: var(--main-color);
  color: #131313;
  box-shadow: 0 0 25px var(--main-color);
}

footer p {
  margin-top: 20px;
  text-align: center;
  font-size: 16px;
  color: #fff;
}

/* ================ Responsive Design ================ */
/* Base Mobile Styles (Default) */
/* Add this at the BOTTOM of your CSS file */

/* Tablets (768px and below) */
@media (max-width:1200px) {
  html {
      font-size: 55%;
  }
}
@media (max-width: 768px) {
  /* General Adjustments */
  html {
    font-size: 55%;
  }

  header {
    padding: 2rem 5%;
  }

  /* Mobile Menu */
  #menu-icon {
    display: block;
  }

  .nav-bar {
    position: absolute;
    top: 100%;
    left: -100%;
    width: 225px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    
    background: var(--bg-color);
    transition: all 0.5s ease;
  }

  .nav-bar.active {
    left: 0;
  }

  .nav-bar a {
    display: block;
    padding: 17px;
    margin: 1.6rem 2rem;
    font-size: 2rem;
    font-weight: 600;
  }

  /* Home Section */
  .home {
    flex-direction: column;
    text-align: center;
    padding-top: 15rem;
  }

  .home-img img {
    width: 70vw;
  }

  .home-img::before {
    font-size: 15rem;
    top: 20%;
  }

  /* Services Section */
  .row {
    width: 100%;
    height: auto;
    margin: 2rem 0;
  }

  .row img {
    width: 80%;
    margin: 1rem auto;
  }

  /* About Section */
  .about {
    flex-direction: column;
    text-align: center;
  }

  .about-img img {
    width: 70vw;
  }

  /* Plans Section */
  .cards {
    width: 80%;
    min-width: unset;
    height: auto;
    padding: 2rem;
    margin: 2rem 0;
  }

  /* Review Section Fix */
  .review-box {
    flex-direction: column;
    gap: 3rem;
  }

  .review-content {
    width: 100%;
    min-width: unset;
    height: auto;
    padding: 2rem;
  }

  .review-content p {
    margin-left: 0;
    text-align: center;
    padding: 0 1.5rem;
  }
}

/* Phones (480px and below) */
@media (max-width: 480px) {
  html {
    font-size: 50%;
  }

  /* Typography Adjustments */
  .home-content h1 {
    font-size: 4.5rem;
  }

  .home-content h3 {
    font-size: 3.5rem;
  }

  .heading {
    font-size: 5rem;
  }

  /* Images */
  .home-img img,
  .about-img img {
    width: 90vw;
  }

  .reviewer img {
    width: 12rem;
  }

  /* Cards */
  .cards {
    width: 90%;
  }

  /* Review Content */
  .review-content h3 {
    font-size: 3rem;
  }

  .review-content p {
    font-size: 1.4rem;
  }
}

/* Small Phones (350px and below) */
@media (max-width: 350px) {
  html {
    font-size: 45%;
  }

  .logo {
    font-size: 2.5rem;
  }

  .review-content h3 {
    font-size: 2.8rem;
  }
}