:root {
    --bg-main: #1c1c1e;
    --bg-content: #2c2c2e;
    --border-color: #444;
    --text-primary: #f0f0f0;
    --text-secondary: #aaa;
    --accent-blue: #4a90e2;
    --accent-red: #d9534f;
    --accent-gray: #5a5a5e;
    --accent-purple: #8e44ad;
}

body {
    font-family: 'Lexend', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, 
                 Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    margin: 0;
    font-size: 0.95rem;
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background-color: var(--accent-gray);
    border-radius: 20px;
    border: 3px solid var(--bg-main);
}
::-webkit-scrollbar-thumb:hover {
    background-color: #7f7f83;
}


.unselectable {
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

h1, h2, h3, p, h4 {
    margin: 0;
}

h1 {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.75rem;
}

h2 {
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
    margin-bottom: 15px;
    font-size: 1.15rem;
}

h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 12px;
}

h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 15px;
}

header {
    padding: 15px 0 20px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 25px;
}

.header-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.hub-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 15px;
}

hr.divider {
    border: 0;
    border-top: 1px solid var(--border-color);
    margin: 25px 0;
}

.timeline-page-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 15px;
}

.creator-box {
    background-color: var(--bg-content);
    padding: 20px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

#create-timeline-form {
    display: flex;
    gap: 8px;
}

#login-form {
    display: flex;
    flex-direction: column;
}

input[type="text"],
input[type="date"],
textarea,
input[type="email"],
input[type="password"] {
    flex-grow: 1;
    background-color: #3b3b3d;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 9px;
    font-size: 0.9rem;
    border-radius: 4px;
    font-family: 'Lexend', system-ui, sans-serif;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input[type="date"] {
    color-scheme: dark;
    flex-grow: 0;
    min-width: 150px; 
}

textarea {
    resize: vertical;
    min-height: 60px;
}

input[type="text"]::placeholder,
textarea::placeholder {
    color: var(--text-secondary);
}

input[type="text"]:focus,
input[type="date"]:focus,
textarea:focus,
input[type="email"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 2px rgba(74, 144, 226, 0.3);
}


button, .btn-open {
    padding: 6px 12px;
    border: none;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    color: white;
}

button[type="submit"], .btn-open, #btn-fetch-data {
    background-color: var(--accent-blue);
}

.btn-delete {
    background-color: var(--accent-red);
}

.btn-secondary, .btn-edit-name, .btn-pin {
    background-color: var(--accent-gray);
    color: white;
    border: none;
}

.btn-link-style {
    background: none;
    border: none;
    padding: 0;
    color: var(--accent-blue);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: 'Lexend', system-ui, sans-serif;
    white-space: nowrap;
    cursor: pointer;
}
.btn-link-style:hover {
    text-decoration: underline;
}


#timeline-list-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 15px;
}

.empty-state-message {
    color: var(--text-secondary);
    text-align: center;
    padding: 20px 0;
    font-size: 0.9rem;
    grid-column: 1 / -1;
}

.empty-state-message-timeline {
    color: var(--text-secondary);
    text-align: center;
    padding: 20px 0;
    font-size: 0.9rem;
}

.timeline-card {
    background-color: var(--bg-content);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 18px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.timeline-card.pinned {
    border-color: var(--accent-blue);
    box-shadow: 0 0 8px rgba(74, 144, 226, 0.2);
}

.timeline-card h3 {
    font-size: 1.05rem;
    margin-bottom: 18px;
    word-break: break-word;
}

.card-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.timeline-card-content {
    flex-grow: 1; 
    min-height: 2.5em; 
}

.edit-timeline-name-input {
    flex-grow: 0 !important; 
    width: 100%;
    box-sizing: border-box;
    margin-bottom: 18px;
    padding-top: 4px;
    padding-bottom: 4px;
}

.link-back {
    color: var(--accent-blue);
    text-decoration: none;
    font-size: 0.9rem;
    white-space: nowrap;
}
.link-back:hover {
    text-decoration: underline;
}

.modal-hidden {
    display: none !important;
}

#modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

#modal-dialog {
    background-color: var(--bg-content);
    padding: 25px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    width: 90%;
    max-width: 450px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.3);
}

#modal-dialog p {
    color: var(--text-primary);
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 20px;
}

#modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.copy-modal-list {
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 10px;
    margin-bottom: 20px;
}

.copy-modal-item {
    display: block;
    padding: 8px;
    cursor: pointer;
    border-radius: 3px;
    user-select: none;
}
.copy-modal-item:hover {
    background-color: #3b3b3d;
}
.copy-modal-item input {
    margin-right: 10px;
}

.add-event-form-container {
    background-color: var(--bg-content);
    padding: 20px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.form-header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-right: 45px;
}
.form-header-flex h3 {
    margin-bottom: 0; 
}
.form-header-flex .form-button-group {
    margin-top: 0; 
    justify-self: end;
    visibility: visible;
    opacity: 1;
    transition: visibility 0.1s linear, opacity 0.3s ease-in-out;
}

.panel-collapsed .form-header-flex .form-button-group {
    visibility: hidden;
    opacity: 0;
}

.form-title-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.loader {
    width: 16px;
    height: 16px;
    border: 2px solid var(--text-secondary);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.panel-flap {
    position: absolute;
    top: 18px;
    right: 20px;
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
    z-index: 5;
}

.panel-flap:hover {
    color: var(--accent-blue);
}

#panel-collapsible-content {
    overflow: hidden;
    max-height: 1000px;
    opacity: 1;
    transition: max-height 0.4s ease-in-out, opacity 0.3s ease-in-out, margin-top 0.4s ease-in-out;
    margin-top: 15px;
}

.panel-collapsed #panel-collapsible-content {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
}

.panel-collapsed {
    padding-bottom: 20px;
}


#add-event-form {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 10px;
    align-items: center;
}

#add-event-form label {
    text-align: right;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    padding-right: 5px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 5px;
}

#add-event-form label.link-label {
    align-self: start;
    padding-top: 9px;
}

.link-label .add-link-button {
    background: none;
    border: none;
    padding: 0;
    margin-left: 2px;
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
}

.link-label .add-link-button:hover {
    color: var(--accent-blue);
}

#link-inputs {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.link-input-group {
    display: flex;
    gap: 8px;
    align-items: center;
}

.link-input-group .event-link-url {
    flex-basis: 60%;
    flex-grow: 1;
}

.link-input-group .event-link-text {
    flex-basis: 40%;
    flex-grow: 1;
}

.link-input-wrapper {
    display: flex;
    align-items: center;
    gap: 5px;
}

.link-input-wrapper .event-link-input {
    flex-grow: 1; 
}

.btn-remove-link {
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
}
.btn-remove-link:hover {
    color: var(--accent-red);
}


.form-button-group {
    grid-column: 2 / 3;
    justify-self: end;
    display: flex;
    gap: 8px;
    margin-top: 5px;
}

#timeline-events-container {
    position: relative;
    padding-left: 45px;
    padding-top: 10px;
    margin-top: -20px; 
}

#timeline-events-container:not(:has(.timeline-event-card))::before {
    display: none;
}

#timeline-events-container:not(:has(.timeline-event-card))::after {
    display: none;
}

#timeline-events-container::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 15px;
    width: 3px;
    background-color: var(--border-color);
    border-radius: 0;
    z-index: 0;
}

#timeline-events-container::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 4px;
    width: 24px;
    height: 3px;
    background-color: var(--border-color);
    z-index: 1;
}

.timeline-event-card {
    position: relative;
    background-color: var(--bg-content);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--border-color);
    border-radius: 6px;
    margin-bottom: 12px;
}

.timeline-event-card.is-today {
    border-left: 3px solid var(--accent-blue);
}

.timeline-event-card::before {
    content: '';
    position: absolute;
    top: 11px;
    left: -30px; 
    width: 27px;
    height: 2px;
    background-color: var(--border-color);
}

.timeline-event-card.is-today::before {
    background-color: var(--accent-blue);
}

.event-card-header {
    padding: 8px 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
    cursor: pointer;
}

.event-card-header strong {
    font-weight: 600;
    font-size: 1rem;
    word-break: break-word;
}

.event-card-header span {
    font-size: 0.9rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.event-card-content-wrapper {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.2s linear;
}

.timeline-event-card:not(.event-collapsed) .event-card-content-wrapper {
    grid-template-rows: 1fr;
}

.event-card-content-wrapper > div {
    overflow: hidden;
}

.event-card-body {
    padding: 10px 15px 15px 15px;
    border-top: 1px solid var(--border-color);
    font-size: 0.95rem;
    line-height: 1.5;
    white-space: pre-wrap; 
    word-break: break-word;
}

.event-card-body a {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 600;
}
.event-card-body a:hover {
    text-decoration: underline;
}

.event-card-footer {
    padding: 10px 15px 15px 15px;
    margin-top: 12px;
    border-top: 1px dashed var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.event-links-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.footer-link {
    color: var(--accent-blue);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
}

.footer-link:hover {
    text-decoration: underline;
}

.event-actions-group {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.btn-edit-event,
.btn-delete-event,
.btn-copy-event {
    padding: 4px 8px;
    font-size: 0.8rem;
    font-family: 'Lexend', sans-serif;
    font-weight: 600;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    color: white;
}

.btn-edit-event {
    background-color: var(--accent-gray);
}

.btn-copy-event {
    background-color: var(--accent-blue);
}

.btn-delete-event {
    background-color: var(--accent-red);
}

#mention-autocomplete-container {
    position: absolute;
    background-color: var(--bg-content);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    max-height: 150px;
    overflow-y: auto;
    z-index: 100;
}

.suggestion-item {
    padding: 8px 12px;
    cursor: pointer;
    font-size: 0.9rem;
}

.suggestion-item:hover, .suggestion-item.selected {
    background-color: var(--accent-blue);
    color: white;
}