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

/* ---------------------------------------------------------------------- General Styles */
:root {
  /* Base font size for the entire website */
  font-size: 62.5%;

  /* ----------------------- Colors */
  /* m = modified */
  /* l = light */
  /* d = dark */
:root {
  --color-primary: rgb(41, 43, 56);
  --color-primary-m-l: rgba(41, 43, 56, 0.55);
  --color-primary-m-d: rgba(41, 48, 56, 0.85);

  /* Orange - Platform Accent */
  --color-secondary: rgb(255, 170, 6);
  --color-secondary-m-l: rgba(255, 170, 6, 0.55);
  --color-secondary-m-d: rgba(255, 170, 6, 0.85);

  /* Green - Replacing Blue (Tertiary) */
  --color-tertiary: rgb(34, 139, 34); /* ForestGreen */
  --color-tertiary-m-l: rgba(34, 139, 34, 0.55);
  --color-tertiary-m-d: rgba(34, 139, 34, 0.85);

  --color-quaternary: rgb(231, 231, 230);
  --color-quaternary-m-l: rgba(231, 231, 230, 0.55);
  --color-quaternary-m-d: rgba(231, 231, 230, 0.85);
}


  /* ----------------------- Padding */
  /* 
      xl     = extra large
      l      = large
      m      = medium
      s      = small
  */

  --padding-xl: calc(2rem + 6vh) calc(2rem + 6vw);
  --padding-l: calc(3rem + 4vh) calc(3rem + 4vw);
  --padding-m: calc(2rem + 2vh) calc(2rem + 2vw);
  --padding-s: calc(1rem + 1vh) calc(1rem + 1vw);

  /* ----------------------- Font Size */
  /* 
      l      = large
      m      = medium
      s      = small
      xs     = extra small
  */

  --font-size-l: calc(1.5rem + 2vw);
  --font-size-m: calc(1rem + 1.5vw);
  --font-size-s: calc(1.2rem + 0.6vw);
  --font-size-xs: calc(0.5rem + 0.8vw);

  /* ----------------------- Font Family */

  --font-family-main: "Fredoka", sans-serif;
  --font-family-sub: "Poppins", sans-serif;
}

body {
  font-family: var(--font-family-sub);
  line-height: 1.5;
  color: #fff;
}

.wrapper {
  display: grid;
  grid-template-columns:
    [container-start] 1fr [center-start] repeat(
      14,
      [col-start] minmax(min-content, 15rem) [col-end]
    )
    [center-end] 1fr [container-end];

  grid-template-rows: repeat(6, min-content);
  background-color: var(--color-primary);
}


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

li {
  list-style: none;
}

#main-header {
  background-color: var(--color-primary);
  grid-column: center-start / center-end;
  padding: var(--padding-s);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.logo-container {
  height: 8rem;
  width: 8rem;
}

.logo-container img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
}

.nav-menu {
  display: flex;
  align-items: center;
}

.hamburger {
  z-index: 1;
}

.nav-menu li {
  position: relative;
  padding-left: 1.5vw;
}

.nav-menu li a {
  position: relative;
  padding: 1rem 0.6rem;
  font-size: calc(1rem + 0.4vw);
  color: #fff;
  display: flex;
  gap: 0.5rem;
  align-items: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

.navbar {
  z-index: 1000;
}

.hamburger {
  display: none;
}

/* Nav Links Animation( Magic ) */
ul.nav-menu li a:link::before,
ul.nav-menu li a:visited::before,
ul.nav-menu li a:link::after,
ul.nav-menu li a:visited::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 0.25rem;
  background-color: #fff;
  transform: scaleX(0);
  transition: transform 0.6s cubic-bezier(1, 0, 0, 1);
}

ul.nav-menu li a:link::before,
ul.nav-menu li a:visited::before {
  top: 0;
  /* Transform-Origin is center by default */
  transform-origin: left;
}

ul.nav-menu li a:link::after,
ul.nav-menu li a:visited::after {
  bottom: 0;
  transform-origin: right;
}

ul.nav-menu li a:hover::before,
ul.nav-menu li a:active::before,
ul.nav-menu li a:hover::after,
ul.nav-menu li a:active::after {
  transform: scaleX(1);
}







/* ********* Media Queries ********** */
@media screen and (max-width: 800px) {
  /* ---------------------------- Hamburger Menu */
  .hamburger {
    display: block;
    height: 5rem;
    width: 5rem;
    position: fixed;
    top: 3rem;
    right: 4rem;
    padding: 0.6rem;
    cursor: pointer;
    z-index: 100000000;
  }

  /* ----------------------- Hamburger Menu Line */
  .hamburger-line {
    position: absolute;
    background-color: var(--color-quaternary);
    height: 0.3rem;
    width: 3rem;
  }

  .hamburger-line:first-child {
    width: 6rem;
    top: 0;
    left: 0;
    transition: all 0.35s ease-in-out;
  }

  .hamburger-line:nth-child(2) {
    top: 1rem;
    width: 2.5rem;
    left: 0;
    transition: all 0.2s ease-in-out;
  }

  .hamburger-line:last-child {
    width: 4.5rem;
    top: 2rem;
    left: 0;
    transition: all 0.35s ease-in-out;
  }

  /* --- Toggling Nav Bar --- */
  .line-1 {
    transform: rotate(45deg) translate(0.3rem, 1.4rem);
    width: 3.5rem !important;
  }

  .line-2 {
    visibility: hidden;
  }

  .line-3 {
    transform: rotate(-45deg) translate(0, -1.15rem);
    width: 3.5rem !important;
  }

  .block.visible {
    transform: translateX(0);
  }

  /* --- Nav Links --- */
  nav.navbar,
  ul.nav-menu {
    flex-direction: column;
    justify-content: space-evenly;
    align-items: flex-start;
    gap: 2rem;
  }

  nav.navbar {
    position: fixed;
    top: 0;
    right: 0;
    padding: 4rem;
    height: 100vh;
    width: 30rem;
    background-color: var(--color-primary);
    transform: translateX(100rem);
    transition: all 0.55s cubic-bezier(1, 0, 0, 1);
    padding-top: 8rem;
  }

  .nav-menu li a {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 1rem;
    font-size: 1.6rem;
  }

  .logo-container {
    height: 6rem;
    width: 6rem;
  }}
/* ---------------------------------------------------------------------------- Hero Section */
section#hero {
  grid-column: center-start / center-end;
  color: var(--color-quaternary);
  height: 530px;
}

.hero-container {
  width: 100%;
  height: 100%;
  background-image: linear-gradient(
      rgba(74, 82, 82, 0.5),
      rgba(67, 67, 136, 0.5)
    ),
    url("back2.png");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-attachment: fixed;
}

.hero-container__heading {
  font-size: calc(5rem + 0.5vw);
  text-shadow: 2px 2px 2px black;
}

.hero-container__para {
  font-size: 1.6rem;
  text-shadow: 2px 2px 2px black;
  text-align: center;
}

.hero-container__para span {
  display: block;
}

/* ---------------------------------------------------------------------------- Profile Section */
section#profile-section {
  grid-column: center-start / center-end;
  padding: var(--padding-m);
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: transparent;
  color: #ffffff;
}

.profile-container {
  background-color: var(--color-primary-m-l);
  padding: var(--padding-m);
  border-radius: 8px;
  width: 100%;
  
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.profile-container h2 {
  font-size: var(--font-size-l);
  margin-bottom: var(--padding-s);
  text-align: center;
}

.profile-pic-container {
  text-align: center;
  margin-bottom: var(--padding-m);
}

.profile-pic {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  border: 3px solid var(--color-secondary);
  object-fit: cover;
}

.profile-details {
  font-size: var(--font-size-m);
  line-height: 2;
}

.profile-details p {
  margin-bottom: 1rem;
}

/* ---------------------------------------------------------------------------- Group Info Section */
section#group-info {
  grid-column: center-start / center-end;
  padding: var(--padding-m);
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--color-tertiary);
  color: var(--color-quaternary);
}

.group-info-container {
  background-color: var(--color-tertiary-m-l);
  padding: var(--padding-m);
  border-radius: 8px;
  width: 100%;
  
  text-align: center;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.group-info-container h2 {
  font-size: var(--font-size-l);
  margin-bottom: var(--padding-s);
}

.group-info-container p {
  font-size: var(--font-size-m);
}

/* ---------------------------------------------------------------------------- Tutor Section */
section#tutor-section {
  grid-column: center-start / center-end;
  padding: var(--padding-m);
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--color-primary);
  color: #fff;
}

.tutor-container {
  width: 100%;
  max-width: 1200px;
}

.tutor-container h2 {
  font-size: var(--font-size-l);
  text-align: center;
  margin-bottom: var(--padding-m);
}

.tutor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--padding-m);
}

.tutor-card {
  background-color: var(--color-tertiary);
  padding: var(--padding-m);
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.tutor-image img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
}

.tutor-details h3 {
  font-size: var(--font-size-m);
  margin: var(--padding-s) 0;
}

.tutor-details p {
  font-size: var(--font-size-s);
  margin-bottom: var(--padding-s);
}

.social-icons a {
  color: var(--color-quaternary);
  margin: 0 0.5rem;
  font-size: 1.5rem;
  transition: color 0.3s;
}

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

/* ---------------------------------------------------------------------------- Other Profiles Section */
section#other-profiles {
  grid-column: center-start / center-end;
  padding: var(--padding-m);
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--color-primary-m-l);
  color: var(--color-quaternary);
}

.other-profiles-container {
  width: 100%;
  max-width: 1200px;
}

.other-profiles-container h2 {
  font-size: var(--font-size-l);
  text-align: center;
  margin-bottom: var(--padding-m);
}

.profile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--padding-m);
}

.profile-card {
  background-color: var(--color-tertiary-m-l);
  padding: var(--padding-m);
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.profile-card img.profile-pic {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 2px solid var(--color-secondary);
  object-fit: cover;
  margin-bottom: var(--padding-s);
}

.profile-info h3 {
  font-size: var(--font-size-m);
  margin-bottom: var(--padding-s);
}

.profile-info p {
  font-size: var(--font-size-s);
  margin-bottom: var(--padding-s);
}

.message-btn {
  background-color: var(--color-secondary);
  color: var(--color-quaternary);
  border: none;
  padding: 0.8rem 1.5rem;
  border-radius: 5px;
  cursor: pointer;
  font-size: var(--font-size-s);
  transition: background-color 0.3s;
}

.message-btn:hover {
  background-color: var(--color-secondary-m-d);
}

/* ---------------------------------------------------------------------------- Logout Button */
.logout-btn {
  grid-column: center-start / center-end;
  padding: var(--padding-m);
  display: flex;
  justify-content: center;
  background-color: var(--color-primary-m-l);
}

.logout-btn button {
  background-color: #dc3545; 
  color: #fff;
  border: none;
  padding: 1rem 2rem;
  border-radius: 5px;
  cursor: pointer;
  font-size: var(--font-size-s);
  transition: background-color 0.3s;
}

.logout-btn button:hover {
  background-color: #c82333; 
}

/* ---------------------------------------------------------------------------- Popup Section */
.popup {
  display: none; 
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  justify-content: center;
  align-items: center;
  z-index: 10000; 
}

.popup-content {
  background: var(--color-quaternary);
  padding: var(--padding-m);
  border-radius: 8px;
  width: 80%;
  max-width: 600px;
  position: relative;
  color: var(--color-primary);
}

.popup-close {
  position: absolute;
  top: 10px;
  right: 10px;
  cursor: pointer;
  font-size: 2rem;
  color: var(--color-secondary);
}

.popup-content h2 {
  margin-bottom: var(--padding-s);
}

.popup-content form {
  display: flex;
  flex-direction: column;
}

.popup-content label {
  margin-bottom: 0.5rem;
  font-size: var(--font-size-s);
}

.popup-content textarea {
  padding: var(--padding-s);
  border: 1px solid var(--color-secondary);
  border-radius: 5px;
  resize: none;
  font-size: var(--font-size-s);
  margin-bottom: var(--padding-m);
}

.popup-content button[type="submit"] {
  background-color: var(--color-secondary);
  color: var(--color-quaternary);
  border: none;
  padding: 0.8rem 1.5rem;
  border-radius: 5px;
  cursor: pointer;
  font-size: var(--font-size-s);
  transition: background-color 0.3s;
}

.popup-content button[type="submit"]:hover {
  background-color: var(--color-secondary-m-d);
}

/* ---------------------------------------------------------------------------- Media Queries */
@media screen and (max-width: 800px) {
  /* ---------------------------- Hamburger Menu */
  .hamburger {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 2rem;
    width: 2rem;
    position: fixed;
    top: 3rem;
    right: 4rem;
    padding: 0.6rem;
    cursor: pointer;
    z-index: 100000000;
  }

  /* ----------------------- Hamburger Menu Line */
  .hamburger-line {
    background-color: var(--color-quaternary);
    height: 0.3rem;
    width: 100%;
    transition: all 0.35s ease-in-out;
  }

  .hamburger-line:nth-child(1) {
    transform: rotate(0deg);
  }

  .hamburger-line:nth-child(2) {
    opacity: 1;
  }

  .hamburger-line:nth-child(3) {
    transform: rotate(0deg);
  }

  /* --- Toggling Nav Bar --- */
  .hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

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

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

  nav.navbar {
    position: fixed;
    top: 0;
    right: 0;
    padding: var(--padding-l);
    height: 100vh;
    width: 30rem;
    background-color: var(--color-primary);
    transform: translateX(100%);
    transition: all 0.55s cubic-bezier(1, 0, 0, 1);
    padding-top: 8rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
  }

  nav.navbar.active {
    transform: translateX(0);
  }

  .nav-menu {
    flex-direction: column;
    align-items: flex-start;
    gap: 2rem;
  }

  .nav-menu li a {
    flex-direction: row;
    align-items: center;
    gap: 1rem;
    font-size: 1.6rem;
  }

  .logo-container {
    height: 6rem;
    width: 6rem;
  }

  /* ---------------------------------------------------------------------------- Hero Section */
  section#hero {
    height: 300px;
  }

  .hero-container__heading {
    font-size: calc(4rem + 0.5vw);
  }

  .hero-container {
    background-size: cover;
    background-attachment: scroll; 
  }


  .profile-container,
  .group-info-container,
  .tutor-container,
  .other-profiles-container {
    padding: var(--padding-s);
  }

  .tutor-grid,
  .profile-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }

  .profile-pic,
  .tutor-image img,
  .profile-card img.profile-pic {
    width: 120px;
    height: 120px;
  }

  .hero-container__para {
    font-size: 1.4rem;
  }
}


@media screen and (max-width: 1200px) {
  .profile-container,
  .group-info-container {
    padding: var(--padding-s);
    max-width: 90%;
  }

  .tutor-container,
  .other-profiles-container {
    max-width: 1000px;
  }

  .tutor-grid,
  .profile-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }

  .profile-pic,
  .tutor-image img,
  .profile-card img.profile-pic {
    width: 130px;
    height: 130px;
  }

  .hero-container__heading {
    font-size: calc(4.5rem + 0.5vw);
  }

  .hero-container__para {
    font-size: 1.5rem;
  }
}

/* ---------------------------------------------------------------------------- Dark Mode (Optional) */
@media (prefers-color-scheme: dark) {
  body {
    background-color: var(--color-primary);
    color: var(--color-quaternary);
  }

  
  .popup-content {
    background: var(--color-quaternary);
    color: var(--color-primary);
  }

}