/* All */
.page-content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    align-items: center;
}

/* Top-left brand */
.site-brand-top {
    position: absolute;
    top: 2rem;
    left: 100px;
    font-size: var(--font-size-biggest);
    font-family: var(--font-ui);
    pointer-events: none;
    z-index: 5;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
}

.site-brand-top strong {
    font-weight: 600;
    color: var(--page-text);
    letter-spacing: 0;
}

/* Left */
.content-column {
    overflow-y: auto;
    font-family: var(--font-prose);
}

.text-panel {
    padding-left: 100px;
    max-width: 600px;
}

.text-panel__heading {
    font-size: var(--font-size-medium);
    font-weight: 600;
    font-family: var(--font-ui);
    color: var(--page-text);
    letter-spacing: 0;
    margin-bottom: 12px;
    cursor: pointer;
    user-select: none;
    display: inline-block;
}

.text-panel__heading:hover {
    color: var(--muted);
}

/* Vertical NEWS tab on the far left */
.news-tab-btn {
    position: fixed;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    writing-mode: vertical-lr;
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: none;
    border-radius: 0 6px 6px 0;
    padding: 1.25rem 0.55rem;
    cursor: pointer;
    font-family: var(--font-button);
    font-weight: 400;
    font-size: var(--font-size-small);
    color: var(--page-text);
    z-index: 20;
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.08);
    transition: background 0.15s, color 0.15s, box-shadow 0.15s;
    user-select: none;
}

.news-tab-btn[aria-expanded="true"] {
    display: none;
}

/* Applied synchronously via inline script to prevent FOUC */
[data-news-collapsed] .text-panel__collapsible {
    display: none;
}

.news-tab-btn:hover {
    background: var(--page-text);
    color: var(--surface);
    box-shadow: 2px 0 12px rgba(0, 0, 0, 0.18);
}

.text-panel__collapsible {
    overflow: hidden;
}

.text-panel__collapsible.is-collapsed {
    display: none;
}

.text-content-row {
    display: flex;
    flex-direction: row;
    gap: 1rem;
    padding-left: 15px;
    align-items: flex-start;
}

.text-subheader {
    font-size: var(--font-size-small);
    font-weight: 500;
    font-family: var(--font-ui);
    color: var(--page-text);
    line-height: 1.4;
    letter-spacing: 0;
    max-width: 17ch;
    flex-shrink: 0;
}

.text-panel__body p {
    color: var(--page-text);
    font-size: var(--font-size-small);
    padding-top: 15px;
    line-height: 1.2;
     letter-spacing: 0.03em;
}

.text-panel__body p:first-child {
    padding-top: 0;
}


/* Middle */
.center-column-wrapper {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.converter-column {
    background: var(--surface);
    width: 750px;
    border-radius: 22px;
    border: 1px solid rgb(255, 255, 255);
    padding-top: 0;
    padding-bottom: 10px;
    padding-left: 60px;
    padding-right: 60px;
    overflow: visible;
    box-shadow: 1px 2px 10px rgba(0, 0, 0, 0.2);
}

/* Tool header area */
.tool-header-area {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    align-self: flex-end;
    gap: 0.35rem;
    margin-bottom: 1.25rem;
    user-select: none;
}

.tool-header-title-row {
    display: flex;
    flex-direction: row;
    align-items: flex-end;
    gap: 0.6rem;
}

.tool-header-title {
    margin: 0;
    color: var(--page-text);
    font-size: var(--font-size-large, 1.75rem);
    font-family: var(--font-ui);
    font-weight: 200;
    line-height: 1;
    letter-spacing: 0;
    transition: color 0.15s;
}

.shape-icon {
    display: block;
    height: 0.75em;
    aspect-ratio: 1;
    background-color: var(--page-text);
    mask-repeat: no-repeat;
    mask-size: contain;
    mask-position: center;
    transition: background-color 0.15s;
}

.shape-icon--unix {
    mask-image: url('../unix-time.svg');
}

.shape-icon--journal {
    mask-image: url('../journaling.svg');
}

.shape-icon.is-hidden {
    display: none;
}

/* Tool panels */
.panels-container {
    display: grid;
    align-items: stretch;
}

.tool-panel {
    grid-area: 1 / 1;
    padding-top: 2.5rem;
    display: flex;
    flex-direction: column;
}

.tool-panel.is-hidden {
    visibility: hidden;
    pointer-events: none;
}

.page-subtitle {
    font-size: var(--font-size-tiny);
    font-weight: 150;
    color: var(--page-text);
    transition: color 0.15s;
}

/* Tool toggle pill */
.tool-toggle {
    display: flex;
    gap: 0;
    border: var(--border-default);
    border-radius: 20px;
    overflow: hidden;
    margin-top: 0.35rem;
}

.tool-toggle__btn {
    background: none;
    border: none;
    padding: 0.25rem 0.85rem;
    font-size: var(--font-size-tiny);
    color: var(--muted);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    border-radius: 0;
}

.tool-toggle__btn.is-active {
    background: var(--border);
    color: var(--bg);
    cursor: default;
}

.tool-toggle__btn:not(.is-active):hover {
    background: color-mix(in srgb, var(--border) 15%, transparent);
    color: var(--page-text);
}

/* Right */
.right-column {
    position: relative;
    padding: 3rem 1.5rem;
    overflow: hidden;
    align-self: stretch;
}

/* Footer */
.page-footer {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 1rem;
    padding: 0.6rem 100px;
    color: var(--page-text);
    font-size: var(--font-size-tiny);
    font-family: var(--font-prose);
}