/* Define Root Variables for Light Theme (Default) */
:root {
    --primary-bg-color: #121212;
    --secondary-bg-color: #1f1f1f;
    --primary-font-color: #e0e0e0;
    --secondary-font-color: #bbbbbb;
    --container-bg-color: #1f1f1f;
    --input-bg-color: #2c2c2c;
    --input-font-color: #e0e0e0;
    --button-bg-color: #333333;
    --button-font-color: #e0e0e0;
    --highlight-color: #bb86fc;
    --border-color: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.7);
    --light-green: lightgreen;
    --tomato: tomato;
    --theme-font:white;
    --text-shadow-color:white;
    --slider-color:#e8e8e8;
    --tick-color:var(--light-green);
    --radio-size: 20px;
}

/* Define Root Variables for white Theme */
[data-theme='light'] {
    --primary-bg-color: #f5f5f5;
    --secondary-bg-color: #ffffff;
    --primary-font-color: #121212;
    --secondary-font-color: #444444;
    --container-bg-color: #f7f7f7;
    --input-bg-color: #ffffff;
    --input-font-color: #121212;
    --button-bg-color: #007BFF;
    --button-font-color: #ffffff;
    --highlight-color: #ea00ea;
    --border-color: #000000;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --light-green: green;
    --theme-font:black;
    --tomato: rgb(255, 0, 0);
    --text-shadow-color:black;
    --slider-color:#e8e8e8;
    --tick-color:var(--tomato);
    --radio-size: 20px;
}

/* General Styles */
* {
    padding: 0;
    margin: 0;
    font-family: "Poppins", sans-serif;
    text-transform: uppercase;
    box-sizing: border-box;
}

/* Body */
body {
    background-color: var(--primary-bg-color);
    color: var(--primary-font-color);
    transition: background-color 0.3s, color 0.3s;
}

/* Header */
.header {
    font-size: 2rem;
    padding-bottom: 0;
    font-weight: bold;
    color: var(--primary-font-color);
}

/* Container */
.container {
    position: relative;
    padding: 10px;
    background-color: var(--container-bg-color);
    transition: background-color 0.3s;
}

/* Theme Selection Container */
.theme-toggle-container {
    margin-bottom: 10px;
}

/* Toggle Switch Container */
.switch {
    font-size: 17px;
    position: relative;
    display: inline-block;
    width: 64px;
    height: 34px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #73C0FC;
    transition: .4s;
    border-radius: 30px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 30px;
    width: 30px;
    border-radius: 20px;
    left: 2px;
    bottom: 2px;
    z-index: 2;
    background-color: var(--slider-color);
    transition: .4s;
}

.sun svg {
    position: absolute;
    top: 6px;
    left: 36px;
    z-index: 1;
    width: 24px;
    height: 24px;
}

.moon svg {
    fill: #73C0FC;
    position: absolute;
    top: 5px;
    left: 5px;
    z-index: 1;
    width: 24px;
    height: 24px;
}

.input:checked + .slider {
    background-color: #183153;
}

.input:checked + .slider:before {
    transform: translateX(30px);
}

/* Sun and Moon Animation */
.sun svg {
    animation: rotate 15s linear infinite;
}

@keyframes rotate {
    0% {
        transform: rotate(0);
    }
    100% {
        transform: rotate(360deg);
    }
}

.moon svg {
    animation: tilt 5s linear infinite;
}

@keyframes tilt {
    0% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(-35deg);
    }
    75% {
        transform: rotate(35deg);
    }
    100% {
        transform: rotate(0deg);
    }
}

/* Popup Message Box */
.pop_up_message_box {
    position: absolute;
    top: 40%;
    left: 32%;
    z-index: 999;
    background-color: var(--secondary-bg-color);
    width: 500px;
    padding: 20px;
    font-size: 1.5rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    color: var(--primary-font-color);
    font-weight: 500;
    border: solid 1px;
}
@media (max-width: 768px){
    .pop_up_message_box{
        left:0%;
        padding:20px;
        font-size: 1rem;
    }
}

.pop_up_message_box p {
    margin: 0;
}

.pop_up_message_box span {
    color: var(--highlight-color);
    font-weight: bold;
}

.pop_up_message_box button {
    background-color: var(--button-bg-color);
    color: var(--button-font-color);
    padding: 10px 20px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    margin-top: 10px;
    box-shadow: 0 6px 8px var(--shadow-color);
    transition: box-shadow 0.5s, transform 0.5s;
}

.pop_up_message_box button:hover {
    box-shadow: 0 8px 10px var(--shadow-color);
    transform: translateY(-2px);
}

.pop_up_message_box:active {
    box-shadow: 0 2px 4px var(--shadow-color);
    transform: translateY(0);
}

.nptel_pop_up_message{
    top:40%;
    visibility: hidden;
    z-index: 999;
}

/* Sub-Container */
.sub-container {
    background-color: var(--secondary-bg-color);
    border-radius: 10px;
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.sub-container .row {
    padding: 10px;
}

.sub_header {
    font-size: 1.5rem;
    padding-bottom: 10px;
    color: var(--primary-font-color);
}

.with_with_out_bonus_container {
    font-size: 1.2rem;
    padding-top: 0;
    color: var(--primary-font-color);
}

.mark_container,
.extra_activity_container {
    padding: 10px;
    font-size: 1.3rem;
    color: var(--primary-font-color);
    margin: 10px;
}

/* Input Box */
.input_box {
    width: 100%;
    border-radius: 5px;
    padding: 0.5px;
    text-align: center;
    background-color: var(--input-bg-color);
    color: var(--input-font-color);
    font-family: "New Amsterdam";
    font-size: 1.5rem;
}

/* Calculate Button */
#calculate_button,
#possible-mark-button {
    width: 150px;
    font-weight: bold;
    padding: 1%;
    background-color: var(--button-bg-color);
    color: var(--button-font-color);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    cursor: pointer;
    font-size: 1rem;
    text-align: center;
}

/* Result Mark Container */
.result-mark-container {
    background-color: var(--secondary-bg-color);
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: 10px;
    visibility: hidden;
    box-shadow: 0 4px 12px var(--shadow-color);
}

.result-mark-header {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary-font-color);
}

.result-mark-container .row .col p {
    font-size: 1.2rem;
    text-align: left;
    font-weight: 500;
    color: var(--primary-font-color);
}

/* Button & Input Hover Effects */
input,
button {
    box-shadow: 0 6px 8px var(--shadow-color);
    transition: box-shadow 0.5s, transform 0.5s;
    font-family: "New Amsterdam";
    font-weight: 500;
    padding: 10px;
    border: solid 1px var(--border-color);
}

input::placeholder{
    color: var(--input-font-color);
}

input:hover,
button:hover {
    box-shadow: 0 8px 10px var(--shadow-color);
    transform: translateY(-2px);
}

input:focus:valid {
    color: var(--light-green);
    box-shadow: 0 0 15px var(--light-green);
}

input:focus:invalid {
    color: var(--tomato);
    box-shadow: 0 0 15px var(--tomato);
}

input:invalid {
    color: var(--tomato);
    border-color: var(--tomato);
    box-shadow: 0 0 15px var(--tomato);
}

/* Checked Radio Box */
.radio-input {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    height: 40px;
}

.radio-input input {
    appearance: none;
    width: var(--radio-size);
    height: var(--radio-size);
    background-color: var(--container-bg-color);
    border: 2px solid #ccc;
    box-shadow: inset 2px 2px 5px var(--input-bg-color);
    border-radius: 50%;
    transition: all 0.3s ease;
    position: absolute;
    cursor: pointer;
    margin: 0;
}

.radio-input input:hover {
    border-color: green;
}

.radio-input input:checked {
    border-color: green;
    box-shadow: none;
    background-color: lightgreen;
}

/* Radio button indicator (no tick) */
.radio-input input:checked {
    border: 2px solid green;
}

.radio-input input:checked::after {
    content: "";
    position: absolute;
    width: calc(var(--radio-size) * 0.6);
    height: calc(var(--radio-size) * 0.6);  
    
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.2s ease;
}

/* Hide the original plus elements since we're not using them */
.radio-input .plus1,
.radio-input .plus2 {
    display: none;
}

* {
    text-transform: capitalize;
}

/* Vibration Animation */
@keyframes smoothVibrate {
    0% {
        transform: translate(0);
    }

    10% {
        transform: translate(-5px, 5px);
    }

    20% {
        transform: translate(5px, -5px);
    }

    30% {
        transform: translate(-10px, 10px);
    }

    40% {
        transform: translate(10px, -10px);
    }

    50% {
        transform: translate(-15px, 15px);
    }

    60% {
        transform: translate(15px, -15px);
    }

    70% {
        transform: translate(-10px, 10px);
    }

    80% {
        transform: translate(10px, -10px);
    }

    90% {
        transform: translate(-5px, 5px);
    }

    100% {
        transform: translate(0);
    }
}

.vibrate {
    animation: smoothVibrate 1s ease infinite;
}

/* Celebration Animation */
#congrs-lottie-animation {
    visibility: hidden;
}

.lottie_container {
    background-color: transparent;
    position: absolute;
    z-index: 998;
    top: 0;
    left: 0;
}

.add_width_pc {
    width: 100%;
    height: 100%;
}

.add_width_mobile {
    width: 100vh;
    height: 100vh;
    left: -50%;
}

/*heart animation*/
.heart{
    animation: heart-animation 5s ease infinite;
}

@keyframes heart-animation{
    0%{
        font-size: 1.25rem;
    }
    25%{
        font-size: 1.5rem;
    }
    50%{
        font-size: 1.25rem;
    }
    75%{
        font-size: 1.5rem;
    }
    100%{
        font-size: 1.25rem;
    }
}

/* Heart pulse animation */
.heart-pulse {
    animation: pulse-heart 1.5s ease-in-out infinite;
    display: inline-block;
    cursor: pointer;
    transition: all 0.5s ease;
}

@keyframes pulse-heart {
    0% {
        transform: scale(1);
        color: #ff4757;
        text-shadow: 0 0 5px rgba(255, 71, 87, 0.3);
    }
    50% {
        transform: scale(1.3);
        color: #ff3742;
        text-shadow: 0 0 15px rgba(255, 71, 87, 0.8), 0 0 25px rgba(255, 71, 87, 0.6);
    }
    100% {
        transform: scale(1);
        color: #ff4757;
        text-shadow: 0 0 5px rgba(255, 71, 87, 0.3);
    }
}

/* Creator link styling */
.creator-link {
    color: var(--primary-font-color);
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
}

.creator-link:hover {
    color: var(--highlight-color);
    text-decoration: underline;
    transform: scale(1.05);
}

.creator-link:visited {
    color: var(--primary-font-color);
}

.creator-link:active {
    color: var(--highlight-color);
}

/* Responsive Styling for Mobile */
@media (max-width: 768px) {
    .pop_up_message_box {
        width: 350px;
        font-size: 1.2rem;
        left: 1%;
    }
    .mark_container{
        font-size: 1.2rem;
    }
    .col-3 p{
        margin: 0;
    }
    .radio-input {
        justify-content: flex-end;            
        padding-right: 15px;    
    }
    :root {
        --radio-size: 18px;
    }
    :root {
        --radio-size: 18px;
    }
}