/* general styling for all pages */
* {
  font-family: "IBM Plex Sans", serif;
}

p {
  cursor: default;
}

/* styling for home page begins here */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: #3776ab;
  width: 100%;
  height: 75px;
  padding: 0 20px;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 1000;
  box-shadow: 0px 0px 7px #5d5d5d;
}

nav h1 {
  position: sticky;
  left: 50px;
  color: #ffffff;
  font-size: 24px;
}

nav ul {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 30px;
  padding: 0;
}

nav ul li {
  margin: 0 15px;
  color: #ffffff;
  padding: 10px;
}

nav ul li:hover {
  cursor: default;
  color: #8f8f8f;
}

#login {
  background-color: #ffd43b;
  border: none;
  padding: 4px 10px;
  border-radius: 4px;
}

#login a {
  text-decoration: none;
  color: #000000;
  font-weight: 475;
}

#login:active {
  background-color: #ecbe19;
}

#home-body {
  display: flex;
  justify-content: center;
  align-items: center;
  padding-bottom: 55px;
  width: 100%;
  height: 100vh;
  margin-bottom: 0px;
  flex-direction: column;
}
.course-card {
  border-left: 5px solid #ffc107;
  transition: transform 0.3s ease-in-out;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.course-card:hover {
  transform: scale(1.05);
}

.coming-soon-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000000b3;
  color: #ffffff;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.5rem;
  font-weight: bold;
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
}

.course-card.coming-soon:hover .coming-soon-overlay {
  opacity: 1;
}

#courses {
  max-height: 500px;
  padding: 20px;
}

#home-foot {
  position: fixed;
  bottom: 0px;
  background-color: #306998;
  height: 40px;
  width: 100vw;
  left: 0px;
  margin: 0;
  display: flex;
  align-content: baseline;
  justify-content: center;
}

#home-foot p {
  padding-top: 0px;
  opacity: 0.8;
}

/* styling for home page ends here */
/* styling for course pages starts here */

#profile {
  max-width: 800px;
  margin: 40px auto;
  padding: 40px;
  background: #fff;
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  text-align: center;
}

#profile h2 {
  margin-bottom: 20px;
}

#profile hr {
  width: 100%;
  margin: 25px 0;
  opacity: 0.3;
}

#profile h3 {
  margin: 0 0 20px;
}

#profile table {
  width: 100%;
  border-collapse: collapse;
  text-align: center;
  font-size: 1.2rem;
}

#profile th,
#big-div td {
  padding: 12px;
}

#profile thead {
  background: #306998;
  color: white;
}

#profile tr.alt {
  background: #f2f2f2;
}

#logoutBtn {
  margin-top: 30px;
  padding: 10px 25px;
  font-size: 1rem;
  background: #d9534f;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s;
}

#logoutBtn:hover {
  background: #c9302c;
}

/* styling for course pages starts here */

.body {
  display: grid;
  grid-template-columns: 300px 800px 300px;
  margin-bottom: 0px;
  margin-right: 0px;
  gap: 15px;
}

.nav {
  z-index: 2;
  grid-column-start: 1;
  grid-column-end: 2;
  background-color: #3776ab;
  position: fixed;
  width: 240px;
  height: 100vh;
  padding: 20px;
  font-size: 24px;
  left: 0;
  top: 0;
  box-shadow: 5px 0 10px #0000004d;
}

/* this is our edit of the default h1 properties extracted from google's devtools inspect tool. */
:-webkit-any(article, aside, nav, section) h1 {
  font-size: 1.5em;
  margin-block-start: 0px;
  margin-block-end: 0px;
}

.nav ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
}

.nav h1 {
  position: sticky;
  display: flex;
  top: 15px;
  margin-bottom: 25px;
  color: #ffffff;
}

h1:hover {
  cursor: pointer;
}

.nav .course-title {
  margin-bottom: 25px;
  color: #ffffff;
}

.nav li {
  display: block;
  color: #ffffff;
}

.chapters li {
  margin-bottom: none;
}

.chapters li a {
  color: #ffffff;
  text-decoration: none;
  transition: 0.6s;
  display: block;
  border-radius: 3px;
  padding: 20px;
  padding-left: 5px;
}

.chapters li a:hover {
  background: #ffd43b;
  color: #000000;
}

.section li a {
  color: #ffffff;
  text-decoration: none;
  font-size: 20px;
  padding: 10px;
  padding-left: 10px;
  display: block;
}

.section {
  display: none;
  color: #ddd;
  padding-left: 10px;
}

main {
  grid-column-start: 2;
  grid-column-end: 3;
  margin-left: 15px;
  padding-bottom: 30px;
  flex-grow: 1;
  margin-bottom: 60px;
  z-index: 0;
  min-height: 100vh;
  padding-right: 30px;
}
main h1 {
  color: #306998;
  margin-bottom: 10px;
}

main h3 {
  color: #000000;
  margin-top: 20px;
}

main p {
  font-size: 18px;
  line-height: 1.6;
  color: #333;
}

main ul {
  padding-left: 20px;
}
.indent {
  tab-size: 4;
}

.listing {
  font-size: 18px;
}
.listing li::marker {
  color: #306998;
}

.operator {
  color: #00a4a4;
}
.boolean {
  color: blue;
}

.truth-table {
  width: 300px;
  content: center;
  text-align: center;
  border: 2px #000000;
  border-collapse: collapse;
}

.truth-table td {
  color: #0000ff;
}

.order-of-precedance {
  width: 420px;
  content: center;
  text-align: center;
  border: 2px #000000;
  border-collapse: collapse;
}

.reserved-words {
  width: 420px;
  content: center;
  text-align: center;
  border: 2px #000000;
  border-collapse: collapse;
}

pre {
  background-color: #2b2b2b;
  color: #ffd43b;
  padding: 10px;
  border-radius: 5px;
  overflow-x: auto;
  font-size: 16px;
}

.code {
  margin-top: 20px;
  padding: 12px;
  border-radius: 12px;
  width: 50%;
  color: #ffffff;
}

.code .small {
  width: 100%;
  resize: none;
  background-color: #282c34;
  color: #ffffff;
  font-size: 16px;
  width: 600px;
  height: 100px;
  border-radius: 10px;
  border: none;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  padding: 10px 10px;
  pointer-events: none;
}
.code .large {
  width: 100%;
  resize: none;
  background-color: #282c34;
  color: #ffffff;
  font-size: 16px;
  width: 600px;
  height: 200px;
  border-radius: 5px;
  border: none;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  padding: 10px 10px;
  pointer-events: none;
}

.code button {
  color: #306998;
  padding: 10px 15px;
  font-size: 16px;
  cursor: pointer;
  background-color: #ffd43b;
  border-radius: 5px;
  margin-top: 10px;
  border: none;
}

.code button:active {
  background-color: #c59b02;
}

.output {
  background-color: #282c34;
  padding: 10px;
  color: #21f101;
  border-radius: 5px;
  border: 1px solid #444;
  white-space: pre-wrap;
  min-height: 50px;
}

main h4 {
  color: #306998;
}

.data-type {
  color: #b818b8;
}

.data-types {
  color: #000000;
}

#course-foot {
  display: flex;
  position: sticky;
  height: 40px;
  width: 100vw;
  bottom: 0px;
  top: 100vh;
  left: 0;
  background: #306998;
  color: #000000;
  text-align: center;
  padding: 15px;
  margin-bottom: 0px;
  align-content: center;
  justify-content: center;
  margin-top: 15px;
  justify-self: end;
  z-index: 1;
}

#course-foot p {
  opacity: 0.8;
}

.course-title:hover {
  cursor: pointer;
}

code {
  color: #000000;
}

.compiler {
  position: fixed;
  justify-content: end;
  grid-column-start: 3;
  right: 0;
  top: 0;
  z-index: 0;
  /* border-left: 5px solid black; */
  box-shadow: -4px 0px 10px 3px grey;
}

.iframe {
  justify-self: end;
  height: 100vh;
  width: 400px;
  z-index: 4;
}
.toggle-btn {
  display: none;
}

/* styling for course pages ends here */

/* styling for compiler page starts here */

#compiler-body {
  margin: 0;
  padding: 0;
}

.compile {
  height: calc(100vh - 79px);
  width: calc(100vw - 8px);
  position: fixed;
  bottom: 0;
}
/* styling for compiler page ends here */

/* styling for signup and login begins here */

.form-body {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0%;
  width: 100%;
  height: 100vh;
  margin: 0;
  background-color: #f4f4f4;
}

#big-div {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid #ccc;
  background-color: #f0f8ff;
  padding: 30px;
  border-radius: 9px;
  box-shadow: 5px 5px 15px #0000004d;
}

form {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.texts {
  width: 90%;
  padding: 10px;
  margin: 10px 0;
  border-left: 3px solid #ffd43b;
  border-top: 1px solid #ccc;
  border-bottom: 1px solid #ccc;
  border-right: 1px solid #ccc;
  border-radius: 5px;
}

input[type="submit"] {
  background-color: #ffd43b;
  color: #545454;
  cursor: pointer;
  border: none;
}

input[type="submit"]:active {
  background-color: #d4b100;
}

#error-message {
  color: #ff0000;
  font-size: 14px;
  margin-top: 10px;
}

#checkbox-container {
  margin: 8px 0px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-direction: row;
  border-radius: 0;
}

.names {
  padding: 5px;
  border-radius: 5px;
  height: 30px;
  width: 120px;
  margin-top: 5px;
  margin: 5px 5.5px 0px 4.5px;
  border-left: 3px solid #ffd43b;
  border-top: 1px solid #ccc;
  border-bottom: 1px solid #ccc;
  border-right: 1px solid #ccc;
}

#creds {
  align-self: self-start;
  display: flex;
  flex-direction: row;
}

.link {
  color: #0000ff;
  text-decoration: none;
}

.link:hover {
  color: #4848ff;
  cursor: pointer;
}

#popup {
  display: none;
  position: fixed;
  top: 50%;
  height: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 30%;
  background: white;
  padding: 20px;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
  border-radius: 10px;
  z-index: 0;
  overflow: auto;
}

#overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgb(220, 219, 219);
  z-index: -1;
}

.close-btn {
  background: white;
  color: black;
  font-size: large;
  border: none;
  padding: 10px 15px;
  cursor: pointer;
  float: right;
  border-radius: 5px;
}

.close-btn:hover {
  background: darkred;
}

#popup {
  display: none;
  position: fixed;
  top: 50%;
  height: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 30%;
  background: white;
  padding: 20px;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
  border-radius: 10px;
  z-index: 0;
  overflow: auto;
}

#overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgb(220, 219, 219);
  z-index: -1;
}

.close-btn {
  background: white;
  color: black;
  font-size: large;
  border: none;
  padding: 10px 15px;
  cursor: pointer;
  float: right;
  border-radius: 5px;
}

.close-btn:hover {
  background: darkred;
}

/* styling for login and sign up ends here */

/* styling for info page starts here */
#info-div {
  display: flex;
  padding: 10px 10px 20px;
  margin-top: 75px;
  flex-direction: column;
  align-content: center;
  justify-content: center;
  align-items: center;
}

.sub-div {
  display: flex;
  flex-direction: row;
  align-content: center;
  justify-content: center;
  align-items: center;
  margin: 30px 30px;
  align-content: space-between;
}

#intro {
  max-width: 65vw;
}
.small-div {
  display: flex;
  flex-direction: column;
  align-content: center;
  justify-content: center;
  align-items: center;
  margin: 10px 15px 15px 7px;
  padding: 10px;
  width: 25vw;
  border-top: 1px solid #cbcbcb;
  border-left: 4px solid #ecbe19;
  border-right: 1px solid #cbcbcb;
  border-bottom: 1px solid #cbcbcb;
  border-radius: 7px;
  box-shadow: 5px 5px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease-in-out;
}

.small-div:hover {
  transform: scale(1.0375);
}

#naming {
  text-decoration: none;
  color: #306998;
}

#naming:hover {
  color: #6498c3;
}

/* styling for info page ends here */

/* styling for chapter14 */

.list-functions {
  width: 450px;
  border-collapse: collapse;
}
.list-functions thead {
  background-color: #306998;
}
.list-functions thead th {
  color: White;
}
.list-functions tbody tr:nth-child(odd) {
  background-color: #f2f2f2;
}
.list-functions td {
  padding: 10px;
  color: #333;
}
/* styling for chapter14 ends here */
/* ------------------------------------------------------------------
   Admin – Add-question page
   ------------------------------------------------------------------*/

   .admin-card{
    display:flex;
    flex-direction:column;
    gap:14px;
    max-width:1000px;
  }
  
  /* horizontal strips */
  .row{
    display:flex;
    align-items:center;
    gap:12px;
    flex-wrap:wrap;
  }
  #start-btn{
    background: #FFD43B;
    border: none;
  }
  /* question textarea */
  .quizbox{
    flex:1 1 600px;
    padding:10px;
    border:1px solid #ccc;
    border-left:3px solid #FFD43B;
    border-radius:5px;
    resize:vertical;
  }
  
  /* all inputs/selects share same decoration */
  .quiz,
  .row input[type="number"],
  .row select{
    padding:10px;
    margin:10px 0;
    border:1px solid #ccc;
    border-left:3px solid #FFD43B;
    border-radius:5px;
  }
  
  /* option text inputs grow */
  .row input[type="text"]{ flex:1 1 220px; }
  
  /* fixed widths */
  .row input[type="number"],
  .row select{ width:80px; }
  
  /* save button */
  button.save{
    background:#FFD43B;
    border:none;
    padding:10px 22px;
    border-radius:6px;
    cursor:pointer;
  }
  button.save:active{ background:#cfae25; }



/* media queries */
@media (max-width: 770px) {
  .body {
    display: block;
  }
  .compiler {
    display: none;
  }

  .nav {
    position: fixed;
    width: 100vw;
    height: 100vh;
    background: #3776ab;
    color: white;
    transition: transform 0.3s ease-in-out;
    transform: translateX(-100%);
    z-index: 1000;
  }

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

  .toggle-btn {
    display: block;
    font-size: large;
    position: absolute;
    top: 10px;
    right: 10px;
    background: #3776ab;
    color: white;
    border: none;
    padding: 10px;
    cursor: pointer;
    z-index: 1100;
  }
}

@media (max-width: 1000px) {
  #compiler {
    display: none;
  }
}