:root {
    --c1: rgb(240, 247, 249) /*#f0f7f9*/; 
    --c2: rgb(57, 100, 115) /*#396473*/; 
    --c3: #b8c5d6; 
    --c4: #107e7d; 
    --goodc1: #53AF70;
    --okc1: #E0AD3C;
    --badc1: #DE5242;
    --goodc2: #143222;
    --okc2: #4F2E14;
    --badc2: #8f2626;
    --a1: #163e64; 
    --a2: #46b1e1;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Poppins", sans-serif;
}

body {
    background-color: var(--c1);
    padding-bottom: 5vh;
} 

.home-page {
    display: none;
}

.create-flashcard-page {
    background-color: var(--c1);
    width: 100vw;
    height: 100vh;
    display: flex;
    padding-top: 0;
    display: none;
    position: absolute;
    left: 0;
    top: 0;
}

.flashcard-introduction-page {
    display: none;
}

.study-flashcard-page {
    background-color: var(--c1);
    width: 100vw;
    height: 100vh;
    display: flex;
    padding-top: 0;
    display: none;
    position: absolute;
    left: 0;
    top: 0;
}

.flashcard-result-page {
    display: none;
}

.test-intro-page {
    display: none;
}

.multiple-choice-intro-page {
    display: none;
}

.multiple-choice-page {
    background-color: var(--c1);
    width: 100vw;
    height: 100vh;
    display: flex;
    padding-top: 0;
    display: none;
    position: absolute;
    left: 0;
    top: 0;
}

.test-result-page {
    display: none;
}

.past-paper-page {
    background-color: var(--c1);
    width: 100vw;

    display: flex;
    padding-top: 0;

    display: none;
    position: absolute;
    left: 0;
    top: 0;
}

.subject-page {
    display: none;
}

.physics-flashcards {
    display: none;
}

.cemeg-flashcards {
    display: none;
}

.bioleg-flashcards {
    display: none;
}

.maths-flashcards {
    display: none;
}

.maths-pellach-flashcards {
    display: none;
}

.timetable-page {
    display: none;
}

.progress-page {
    display: none;
}

.user-page {
    display: none;
}

.aditional-physics-resources {
    display: none;
}

.aditional-maths-resources {
    display: none;
}

.aditional-biology-resources {
    display: none;
}

.aditional-chemistry-resources {
    display: none;
}

.content-container .title-box {
    width: 80vw;
    border-bottom: 1px solid var(--c2);
    color: var(--c2);
    font-size: 2vw;
    padding-bottom: 1vw;
    margin-left: 7.5vw;
}


.hamburger-menu {
    position: fixed;
    top: 4.5vw;
    margin-left: 90vw;
    z-index: 100;
    z-index: 101;
}

.menu-btn {
    position: relative;
    display: flex; /* Remember to turn this to display: flex */
    justify-content: center;
    align-items: center;
    width: 7.5vw;
    height: 0.6vw;
    cursor: pointer;
    transition: all .5s ease-in-out;
}

.menu-btn-burger {
    width: 7.5vw;
    height: 1vw; 
    background-color: var(--c2);
    border-radius: 0.5vw;
    box-shadow: 0vw 0.2vw 0.5vw rgba(47, 137, 255, 0.2);
    transition: all .5s ease-in-out;
}

.menu-btn-burger::before,
.menu-btn-burger::after {
    content: "";
    position: absolute;
    width: 7.5vw;
    height: 1vw;
    background: var(--c2);
    border-radius: 0.5vw;
    box-shadow: 0 0.2vw 0.5vw rgba(47, 137, 255, 0.2);
    transition: all .5s ease-in-out;
}

.menu-btn-burger::before {
    transform: translateY(-1.6vw);
}

.menu-btn-burger::after {
    transform: translateY(1.6vw);
}

.menu p {
    margin-top: 2.5vw;
    font-size: clamp(0px, 3vw, 10000px);
}

/* hamburger animation */

.menu-btn.open .menu-btn-burger {
    transform: translateX((-5vw));
    background: transparent;
    box-shadow: none;
}

.menu-btn.open .menu-btn-burger::before {
    transform: rotate(45deg) translate(-3.5vw, 3.5vw);
    background-color: white
}

.menu-btn.open .menu-btn-burger::after {
    transform: rotate(-45deg) translate(-3.5vw, -3.5vw);
    background-color: white;
}

.menu-btn.open .menu-btn-burger {
    transform: translateX(5vw);
}

.side-menu {
    background-color: var(--c2);
    width: 20vw;
    height: 97.5%;
    border-radius: 1vw ;
    position: fixed;
    left: 100vw;
    top: 1.25%;
    transition: left 0.4s ease;
    z-index: 100;
    border: 3px solid white;
    display: flex;
    flex-direction: column;
}

.side-menu.active {
    left: 79vw;
}

.side-menu img {
    width: 20%
}


.menu-item {
    display: flex;
    align-items: center;
    gap: 3%;
    color: white;
    margin-top: 5%;
    margin-left: 5%;
    cursor: pointer;
    transition: background-color 0.2s ease;
    width: 16.5vw;
    border-radius: 1vw;
    padding: 1vw;
}

.side-menu-1 .menu-item {
    margin-top: 50%;
}

.side-menu-6 {
    margin-top: auto;
    margin-bottom: 2vw;
}

.menu-item img {
    width: 20%; 
}

.menu-item h1 {
    margin: 0;  
    font-size: 1.8vw;
}

.menu-item:hover {
    background-color: rgb(156, 184, 196);
    
}

@keyframes progress {
    0% { --percentage: 0; }
    100% { --percentage: var(--value); }
  }
    
  @property --percentage {
    syntax: '<number>';
    inherits: true;
    initial-value: 0;
  }
    
  [role="progressbar"] {
    --percentage: var(--value);
    --primary: var(--c2);
    --secondary: var(--c1);
    --size: 25vw;
    width: var(--size);
    aspect-ratio: 1;
    border-radius: 50%;
    position: relative;
    overflow: hidden;
    display: grid;
    place-items: center;
  }
  
  
    
  [role="progressbar"]::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: conic-gradient(var(--primary) calc(var(--percentage) * 1%), var(--secondary) 0);
    mask: radial-gradient(white 55%, transparent 0);
    mask-mode: alpha;
    -webkit-mask: radial-gradient(#0000 55%, #000 0);
    -webkit-mask-mode: alpha;
  }
    
  [role="progressbar"]::after {
    counter-reset: percentage var(--value);
    content: counter(percentage) '%';
    font-family: Helvetica, Arial, sans-serif;
    font-size: calc(var(--size) / 5);
    color: var(--primary);
  }
    
  #youtube {
    z-index: 2;
    display: block;
    width: 10vw;
    height: 7vw;
    position: absolute;
    bottom: 2vw;
    right: 2vw;
    background: red;
    border-radius: 50% / 11%;
    transition: transform 0.5s;
  }
    
  #youtube:hover,
  #youtube:focus {
    transform: scale(1.1);
  }
    
  #youtube::before {
    content: "";
    display: block;
    position: absolute;
    top: 7.5%;
    left: -6%;
    width: 112%;
    height: 85%;
    background: red;
    border-radius: 9% / 50%;
  }
    
  #youtube::after {
    content: "";
    display: block;
    position: absolute;
    top: 2vw;
    left: 4vw;
    width: 4.5vw;
    height: 3vw;
    border: 1.5vw solid transparent;
    box-sizing: border-box;
    border-left: 3vw solid white;
  }
    
  #youtube span {
    font-size: 0;
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
  }

.footer {
    margin-top: 5vw;
    opacity: 0.3;
    text-align: center;
}

.footer h1 {
    font-size: 1.5vw;
}

.work-in-progress-warning-shadow {
    position: fixed;
    z-index: 100;
    background-color: black;
    opacity: 0.5;
    width: 100vw;
    height: 100vh;
    left: 0;
    top: 0;
    display: none;
}

.work-in-progress-warning {
    background-color: white;
    z-index: 101;
    width: 60vw;
    height: fit-content;
    padding-top: 2vw;
    padding-bottom: 2vw;
    padding-left: 2.5vw;
    padding-right: 2.5vw;
    left: 20vw;
    top: 10vw;
    border-radius: 2vw;
    color: var(--c2);
    position: fixed;
    display: none;
}

.work-in-progress-warning h1 {
    font-size: 3vw;
}

.work-in-progress-warning p {
    font-size: 1vw;
}

.work-in-progress-warning h2 {
    margin-top: 1vw;
    font-size: 1.5vw;
}

.work-in-progress-warning h3 {
    font-size: 2vw;
}

.work-in-progress-warning .close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    border: 2px solid var(--c2);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
    cursor: pointer;
    background-color: white;
    color: var(--c2);
    line-height: 1;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.work-in-progress-warning .close-btn:hover {
    background-color: var(--c2);
    color: var(--c1);
}

/* All media queries moved to the bottom */
@media screen and (max-width: 500px) {
    .content-container .title-box {
        font-size: 15vw !important;
        top: -5vw !important;
    }

    .hamburger-menu {
        margin-left: 83vw;
        top: 9vw;
    }

    .menu-btn {
        width: 15vw;
    }

    .menu-btn-burger {
        width: 12vw;
        height: 1.5vw;
        
    }

    .menu-btn-burger::before,
    .menu-btn-burger::after {
        width: 12vw;
        height: 1.5vw;
    }
    
    .menu-btn-burger::before {
        transform: translateY(-2.5vw);
    }

    .menu-btn-burger::after {
        transform: translateY(2.5vw);
    }
    
    .side-menu {
        width: 50vw;
        left: 100vw;
        background-color: var(--c2);
        border-radius: 5vw;
    }
    
    .side-menu.active {
        left: 48vw;
    }
    
    .menu-item {
        width: 40vw;
        padding: 3vw;
        margin-top: 8%;
    }
    
    .menu-item h1 {
        font-size: 5vw;
    }
    
    .side-menu-1 .menu-item {
        margin-top: 20%;
    }
    
    .menu-btn.open .menu-btn-burger::before {
        transform: rotate(45deg) translate(-5.5vw, 5.5vw);
    }
    
    .menu-btn.open .menu-btn-burger::after {
        transform: rotate(-45deg) translate(-5.5vw, -5.5vw);
    }
    
    .menu-btn.open .menu-btn-burger {
        transform: translateX(8vw);
    }
    
    .content-container .title-box {
        width: 90vw;
        margin-left: 5vw;
        padding: 3vw;
        margin-top: 0vw;
    }
    
    .content-container .title-box h1 {
        font-size: 40vw;
    }
    
    .footer h1 {
        font-size: 5vw;
    }

    .work-in-progress-warning {
        background-color: white;
        z-index: 101;
        width: 80vw;
        height: fit-content;
        padding-top: 2vw;
        padding-bottom: 2vw;
        padding-left: 2.5vw;
        padding-right: 2.5vw;
        left: 10vw;
        top: 10vw;
        border-radius: 2vw;
        color: var(--c2);
        position: fixed;
        display: none;
    }

    .work-in-progress-warning h1 {
        font-size: 8vw;
    }

    .work-in-progress-warning p {
        font-size: 2.5vw;
    }

    .work-in-progress-warning h2 {
        margin-top: 1vw;
        font-size: 3vw;
    }

    .work-in-progress-warning h3 {
        font-size: 4vw;
    }

    .work-in-progress-warning .close-btn {
        top: 10px;
        right: 10px;    
    }
}