/* Shell layout: header, sidebar, main content. */

.app-shell {
    display: grid;
    grid-template-columns: var(--rail-width) 1fr;
    grid-template-rows: var(--header-height) 1fr;
    grid-template-areas:
        "header header"
        "rail main";
    height: 100vh;
}

/* ---- Header ---- */
.app-header {
    grid-area: header;
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: 0 var(--space-4);
    background: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border);
    z-index: var(--z-header);
}

.app-header__brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: var(--font-size-base);
    letter-spacing: 0.04em;
    white-space: nowrap;
    color: var(--color-text);
}

.app-header__brand:hover {
    text-decoration: none;
}

.omni-trigger {
    flex: 1;
    max-width: 480px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    height: 30px;
    padding: 0 var(--space-3);
    background: var(--color-bg-inset);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-faint);
    font-size: var(--font-size-sm);
    cursor: text;
    text-align: left;
}

.omni-trigger:hover {
    border-color: var(--color-border-strong);
}

.omni-trigger svg {
    width: 13px;
    height: 13px;
    flex-shrink: 0;
}

.omni-trigger .omni-trigger__text {
    flex: 1;
}

.omni-trigger kbd {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-sm);
    padding: 0 5px;
}

.app-header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.menu-toggle {
    display: none;
}

/* ---- Sidebar ---- */
.app-rail {
    grid-area: rail;
    background: var(--color-bg-elevated);
    border-right: 1px solid var(--color-border);
    overflow-y: auto;
    padding: var(--space-3) 0 var(--space-6);
    z-index: var(--z-sidebar);
}

.nav-category {
    margin-bottom: var(--space-4);
}

.nav-category__header {
    padding: 0 var(--space-4) var(--space-1);
    color: var(--color-text-faint);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.nav-category__list {
    display: flex;
    flex-direction: column;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    height: 28px;
    padding: 0 var(--space-4);
    color: var(--color-text-muted);
    border-left: 2px solid transparent;
    font-size: var(--font-size-sm);
    white-space: nowrap;
    overflow: hidden;
}

.nav-item svg {
    flex-shrink: 0;
    width: 14px;
    height: 14px;
    opacity: 0.7;
}

.nav-item:hover {
    color: var(--color-text);
    background: var(--color-bg-elevated-hover);
    text-decoration: none;
}

.nav-item.active {
    color: var(--color-accent);
    border-left-color: var(--color-accent);
    background: var(--color-accent-muted);
}

/* ---- Main ---- */
.app-main {
    grid-area: main;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.view {
    display: none;
    flex: 1;
    padding: var(--space-5);
    max-width: 1200px;
    width: 100%;
}

.view.active {
    display: block;
}

.site-footer {
    padding: var(--space-4) var(--space-5);
    color: var(--color-text-faint);
    font-size: var(--font-size-xs);
    border-top: 1px solid var(--color-border);
    margin-top: auto;
}

.site-footer .footer-quip {
    margin-top: var(--space-1);
    font-style: italic;
}

/* ---- Home hero ---- */
.hero {
    position: relative;
    padding: var(--space-7) var(--space-6) var(--space-6);
    margin-bottom: var(--space-5);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background:
        radial-gradient(ellipse 90% 130% at 18% -30%, var(--color-accent-muted), transparent 60%),
        var(--color-bg-elevated);
}

/* Faint blueprint grid, fading out toward the bottom-right */
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--color-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
    background-size: 34px 34px;
    opacity: 0.35;
    -webkit-mask-image: radial-gradient(ellipse 75% 110% at 25% -10%, black, transparent 78%);
    mask-image: radial-gradient(ellipse 75% 110% at 25% -10%, black, transparent 78%);
    pointer-events: none;
}

.hero-kicker {
    position: relative;
    margin: 0 0 var(--space-3);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: var(--color-text-faint);
    letter-spacing: 0.02em;
}

.hero-title {
    position: relative;
    margin: 0 0 var(--space-3);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(30px, 5.5vw, 48px);
    line-height: 1.08;
    letter-spacing: 0.005em;
    text-transform: uppercase;
    background: linear-gradient(98deg, var(--color-text) 25%, var(--color-accent) 70%, var(--color-accent-strong) 95%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.hero-sub {
    position: relative;
    margin: 0;
    color: var(--color-text-muted);
    max-width: 560px;
    font-size: var(--font-size-md);
}

.hero > * {
    animation: hero-in 0.5s ease both;
}

.hero .hero-sub {
    animation-delay: 0.08s;
}

@keyframes hero-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
    .hero > * {
        animation: none;
    }
}

/* ---- Home ---- */

.clock-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.clock {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-3) var(--space-4);
    transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.clock:hover {
    border-color: var(--color-accent-border);
    transform: translateY(-2px);
}

.clock__zone {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--space-1);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.clock__time {
    font-family: var(--font-mono);
    font-size: var(--font-size-xl);
    font-weight: 600;
    line-height: 1.2;
}

.clock__date {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.clock__offset {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-text-faint);
}

.clock-row__edit {
    display: inline-block;
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-5);
}

.home-section {
    margin-bottom: var(--space-5);
}

.home-section__title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-2);
}

.home-section__title::before {
    content: "// ";
    color: var(--color-accent);
    font-family: var(--font-mono);
}

.tool-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1px;
    background: var(--color-border);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.tool-list__item {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--color-bg-elevated);
    color: var(--color-text);
    font-size: var(--font-size-sm);
}

.tool-list__item:hover {
    background: var(--color-bg-elevated-hover);
    text-decoration: none;
}

.tool-list__icon {
    align-self: center;
    flex-shrink: 0;
    color: var(--color-text-faint);
}

.tool-list__icon svg {
    width: 14px;
    height: 14px;
}

.tool-list__item:hover .tool-list__icon {
    color: var(--color-accent);
}

.tool-list__name {
    font-weight: 600;
    white-space: nowrap;
}

.tool-list__desc {
    color: var(--color-text-faint);
    font-size: var(--font-size-xs);
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .app-shell {
        grid-template-columns: 1fr;
        grid-template-areas:
            "header"
            "main";
    }

    .menu-toggle {
        display: inline-flex;
    }

    .app-rail {
        position: fixed;
        left: 0;
        top: var(--header-height);
        bottom: 0;
        width: var(--rail-width);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        box-shadow: var(--shadow-overlay);
    }

    .app-rail.open {
        transform: translateX(0);
    }

    .sidebar-scrim {
        display: none;
        position: fixed;
        inset: var(--header-height) 0 0 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: calc(var(--z-sidebar) - 1);
    }

    .sidebar-scrim.open {
        display: block;
    }

    .omni-trigger .omni-trigger__text,
    .omni-trigger kbd {
        display: none;
    }

    .omni-trigger {
        flex: 0 0 auto;
        width: 34px;
        justify-content: center;
        padding: 0;
    }

    .view {
        padding: var(--space-4);
    }
}

@media (max-width: 560px) {
    .local-note {
        display: none;
    }
}