.timeline-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
}

.timeline-container h1 {
    font-size: 36px;
    color: #1d539f;
    margin-bottom: 32px;
    text-align: center;
}

#timeline-form {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
}

#timeline-form input,
#timeline-form textarea {
    width: 100%;
    max-width: 500px;
    font-family: "Roboto", serif;
    font-size: 15px;
    padding: 10px 14px;
    border: 1px solid #E4E4E7;
    border-radius: 8px;
    color: #18181B;
    outline: none;
    transition: border-color 0.2s;
}

#timeline-form input:focus,
#timeline-form textarea:focus {
    border-color: #1d539f;
}

#timeline-form textarea {
    min-height: 80px;
    resize: vertical;
}

#timeline-form button {
    font-family: "Roboto", serif;
    font-size: 15px;
    font-weight: 500;
    padding: 10px 24px;
    background-color: #1d539f;
    color: #ffffff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s;
}

#timeline-form button:hover {
    background-color: #163d75;
}

/* The vertical ruler */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    overflow: hidden;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 3px;
    background-color: #1d539f;
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

/* Container around content */
.timeline .container {
    padding: 10px 20px;
    position: relative;
    width: 50%;
    box-sizing: border-box;
}

/* Circles on the timeline */
.timeline .container::after {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    background-color: #ffffff;
    border: 3px solid #1d539f;
    top: 22px;
    border-radius: 50%;
    z-index: 1;
}

.left {
    left: 0;
    padding-right: 30px;
}

.right {
    left: 50%;
    padding-left: 30px;
}

/* Left circle: pinned to right edge (center line) */
.left::after {
    right: -7px;
}

/* Right circle: pinned to left edge (center line) */
.right::after {
    left: -7px;
}

/* Arrow pointing right (left card toward center) */
.left::before {
    content: "";
    position: absolute;
    top: 24px;
    right: 20px;
    border-width: 6px 0 6px 6px;
    border-style: solid;
    border-color: transparent transparent transparent #E4E4E7;
}

/* Arrow pointing left (right card toward center) */
.right::before {
    content: "";
    position: absolute;
    top: 24px;
    left: 20px;
    border-width: 6px 6px 6px 0;
    border-style: solid;
    border-color: transparent #E4E4E7 transparent transparent;
}

/* The content card */
.content {
    padding: 16px 20px;
    background-color: #ffffff;
    position: relative;
    border-radius: 8px;
    border: 1px solid #E4E4E7;
}

.content h3 {
    font-size: 18px;
    color: #18181B;
    margin: 0 0 4px;
}

.content p {
    font-size: 15px;
    color: #3F3F46;
    line-height: 1.6;
    margin: 0 0 8px;
}

.content small {
    font-size: 13px;
    color: #71717A;
}

/* Responsive: single column on small screens */
@media screen and (max-width: 600px) {
    .timeline::after {
        left: 20px;
        transform: none;
    }

    .timeline .container {
        width: 100%;
        padding-left: 50px;
        padding-right: 16px;
    }

    .left, .right {
        left: 0;
        padding-left: 50px;
        padding-right: 16px;
    }

    .left::after, .right::after {
        left: 13px;
    }

    .left::before, .right::before {
        left: 40px;
        border-width: 6px 6px 6px 0;
        border-style: solid;
        border-color: transparent #E4E4E7 transparent transparent;
    }
}