@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300&display=swap');

:root {
    --text-color: #333;
}

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

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #f5f8ff;
}

.container {
    margin: 0 40px;
    max-width: 600px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.container h1 {
    color: var(--text-color);
}

.container .tab {
    position: relative;
    background: white;
    padding: 0 20px 20px;
    box-shadow: 0 15px 25px rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

.container .tab input {
    appearance: none; /* hides radio button */
}

.container .tab label {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.container .tab label::after {
    content: '+';
    position: absolute;
    right: 20px;
    font-size: 2rem;
    color: rgba(0, 0, 0, 0.1);
    transition: transform 1s;
}

.container .tab:hover label::after {
    color: var(--text-color);
}

/* "~" - all next siblings of a specified element */
/* +" - only the 1-st sibling of a specified element */
.container .tab input:checked ~ label::after {
    transform: rotate(135deg);
    color: white;
}

/* number label */
.container .tab label h2 {
    width: 40px;
    height: 40px;
    background: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 1.25rem;
    border-radius: 5px;
    margin-right: 10px;
}

.container .tab input:checked ~ label h2 {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    color: rgba(255, 255, 255, 0.2);
    font-size: 8rem;
    justify-content: flex-end;
    padding: 20px;
}

.container .tab:nth-child(2) label h2 {
    background: linear-gradient(135deg, #70f570, #49c628);
}

.container .tab:nth-child(3) label h2 {
    background: linear-gradient(135deg, #3c8ce7, #00eaff);
}

.container .tab:nth-child(4) label h2 {
    background: linear-gradient(135deg, #ff96f9, #c32bac);
}

.container .tab:nth-child(5) label h2 {
    background: linear-gradient(135deg, #fd6e6a, #ffc600);
}

.container .tab label h3 {
    position: relative;
    font-weight: 500;
    color: var(--text-color);;
    z-index: 10;
}

.container .tab input:checked ~ label h3 {
    background: white;
    padding: 2px 20px;
    color: var(--text-color);
    border-radius: 2px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.container .tab .content {
    max-height: 0;
    transition: all 1s;
    overflow: hidden;
}

.container .tab input:checked ~ .content {
    max-height: 100vh;
}

.container .tab .content p {
    position: relative;
    padding: 10px 0;
    color: var(--text-color);
    z-index: 10;
}

.container .tab input:checked ~ .content p {
    color: white;
}