/* Learning Standards Timeline — vis-timeline styling */

* { box-sizing: border-box; }

body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: aliceblue;
    color: #1a1a1a;
}

#container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 16px;
}

header h1 {
    font-size: 20px;
    color: #1a3a6c;
    margin: 0 0 4px 0;
}

header .subtitle {
    font-size: 13px;
    color: #5a6f87;
    margin: 0 0 10px 0;
}

/* Family filter buttons */
#filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 8px 0 10px 0;
    align-items: center;
}

#filter-bar .label {
    font-size: 12px;
    color: #5a6f87;
    font-weight: 600;
    margin-right: 4px;
}

.filter-btn {
    border: 2px solid transparent;
    padding: 5px 12px;
    border-radius: 16px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    background: white;
    color: #333;
    transition: all 0.15s ease;
    user-select: none;
}

.filter-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.12);
}

.filter-btn.active {
    color: white;
}

.filter-btn[data-family="all"]      { border-color: #555; }
.filter-btn[data-family="all"].active      { background: #555; }
.filter-btn[data-family="ADL"]      { border-color: #4b3f9c; }
.filter-btn[data-family="ADL"].active      { background: #4b3f9c; }
.filter-btn[data-family="AICC"]     { border-color: #6a737d; }
.filter-btn[data-family="AICC"].active     { background: #6a737d; }
.filter-btn[data-family="IMS"]      { border-color: #1f8a8a; }
.filter-btn[data-family="IMS"].active      { background: #1f8a8a; }
.filter-btn[data-family="I2IDL"]    { border-color: #7a3fa3; }
.filter-btn[data-family="I2IDL"].active    { background: #7a3fa3; }

/* Navigation buttons */
#nav-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 8px;
}

.nav-btn {
    background: white;
    border: 1px solid #c8d0d8;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    color: #333;
}

.nav-btn:hover {
    background: #eef2f7;
}

/* Timeline container — padding gives edge events room */
#timeline {
    padding-left: 60px;
    padding-right: 60px;
    background: white;
    border: 1px solid #d6dee6;
    border-radius: 6px;
    overflow: hidden;
}

/* Override vis-timeline default clipping so edge events stay visible */
.vis-timeline { overflow: visible !important; }
.vis-panel.vis-center { overflow: visible !important; }
.vis-item .vis-item-overflow { overflow: visible !important; }

/* Ensure all item boxes fit their text */
.vis-item .vis-item-content {
    white-space: nowrap !important;
    padding: 4px 8px !important;
}
.vis-item.vis-range { min-width: fit-content !important; }
.vis-item.vis-box   { min-width: fit-content !important; }

/* Family-colored timeline bubbles */
.vis-item.family-ADL    { background: #4b3f9c; border-color: #322a73; color: white; }
.vis-item.family-AICC   { background: #6a737d; border-color: #4a5258; color: white; }
.vis-item.family-IMS    { background: #1f8a8a; border-color: #135e5e; color: white; }
.vis-item.family-I2IDL  { background: #7a3fa3; border-color: #552c73; color: white; }

.vis-item.family-ADL.vis-selected,
.vis-item.family-AICC.vis-selected,
.vis-item.family-IMS.vis-selected,
.vis-item.family-I2IDL.vis-selected {
    box-shadow: 0 0 0 3px #ffd54a;
    z-index: 10;
}

/* Tooltips */
.vis-tooltip {
    background: #2c3e50 !important;
    color: white !important;
    padding: 10px 14px !important;
    border-radius: 6px !important;
    font-size: 13px !important;
    max-width: 320px !important;
    line-height: 1.4 !important;
    word-wrap: break-word !important;
    overflow-wrap: break-word !important;
    white-space: normal !important;
    box-sizing: border-box !important;
    border: none !important;
}

.vis-tooltip div {
    max-width: 300px !important;
    word-wrap: break-word !important;
    overflow-wrap: break-word !important;
    white-space: normal !important;
}

/* Hint text */
.hint {
    font-size: 12px;
    color: #6a737d;
    margin: 6px 0 0 0;
    font-style: italic;
}

/* Infobox panel */
#infobox {
    margin-top: 10px;
    background: white;
    border: 1px solid #d6dee6;
    border-radius: 6px;
    padding: 12px 16px;
    font-size: 13px;
    line-height: 1.5;
    min-height: 60px;
    position: relative;
}

#infobox.empty {
    color: #6a737d;
    font-style: italic;
}

#infobox h2 {
    font-size: 16px;
    color: #1a3a6c;
    margin: 0 0 4px 0;
    padding-right: 28px;
}

#infobox .meta-row {
    font-size: 12px;
    color: #5a6f87;
    margin-bottom: 8px;
}

#infobox .meta-row .pill {
    display: inline-block;
    padding: 1px 8px;
    border-radius: 10px;
    font-weight: 600;
    color: white;
    font-size: 11px;
    margin-right: 6px;
}

#infobox .pill.family-ADL    { background: #4b3f9c; }
#infobox .pill.family-AICC   { background: #6a737d; }
#infobox .pill.family-IMS    { background: #1f8a8a; }
#infobox .pill.family-I2IDL  { background: #7a3fa3; }

#infobox .succession {
    background: #f4f7fb;
    border-left: 3px solid #4b3f9c;
    padding: 6px 10px;
    margin: 8px 0;
    font-size: 12px;
}

#infobox .succession span { font-weight: 600; color: #4b3f9c; }

#infobox .description {
    margin: 8px 0;
    color: #1a1a1a;
}

#infobox a.spec-link {
    color: #1f6feb;
    font-weight: 600;
    text-decoration: none;
}

#infobox a.spec-link:hover { text-decoration: underline; }

#infobox .close-btn {
    position: absolute;
    top: 8px;
    right: 10px;
    background: transparent;
    border: 1px solid #d6dee6;
    border-radius: 4px;
    width: 24px;
    height: 24px;
    line-height: 1;
    cursor: pointer;
    color: #5a6f87;
    font-size: 16px;
    padding: 0;
}

#infobox .close-btn:hover {
    background: #f4f7fb;
    color: #1a3a6c;
}

@media (max-width: 700px) {
    header h1 { font-size: 16px; }
    .filter-btn { padding: 4px 9px; font-size: 11px; }
    #timeline { padding-left: 24px; padding-right: 24px; }
}