.app {
    position: relative;
    display: flex;
    flex-direction: column;
    min-height: 100dvh;
    max-width: var(--app-max-width);
    margin: 0 auto;
    background: var(--color-bg);
}

.app--with-nav {
    padding-bottom: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom));
}

.app__content {
    display: flex;
    flex: 1;
    flex-direction: column;
    min-width: 0;
}

.app__main {
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: var(--space-6);
    padding: var(--space-4) var(--space-4) var(--space-8);
}

@media (min-width: 768px) {
    .app--with-nav {
        max-width: var(--app-max-width-tablet);
    }

    .app__main {
        padding-inline: var(--space-6);
    }
}

@media (min-width: 1024px) {
    .app--with-nav {
        display: grid;
        grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
        max-width: none;
        padding-bottom: 0;
    }

    .app--with-nav .app__content {
        width: 100%;
        max-width: var(--content-max-width);
        margin: 0 auto;
    }

    .app--with-nav .app__main {
        padding: var(--space-6) var(--space-10) var(--space-10);
    }

    .mobile-only {
        display: none !important;
    }
}

.top-bar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-height: 60px;
    padding: var(--space-2) var(--space-4);
    background: var(--color-nav-bg);
    backdrop-filter: blur(12px);
}

.top-bar__title {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    font-size: var(--text-xl);
    font-weight: 800;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.top-bar__subtitle {
    display: block;
    color: var(--color-text-muted);
    font-family: var(--font-sans);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0;
}

@media (min-width: 1024px) {
    .app--with-nav .top-bar {
        position: static;
        padding: var(--space-8) var(--space-10) 0;
        background: none;
        backdrop-filter: none;
    }

    .app--with-nav .top-bar__title {
        font-size: var(--text-3xl);
    }
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 800;
    letter-spacing: -0.03em;
}

.brand__mark {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
}

.section {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.section__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
}

.stack {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.row {
    display: flex;
    gap: var(--space-3);
}

.row > * {
    flex: 1;
}

.form-narrow {
    width: 100%;
    max-width: 560px;
}

.split {
    display: grid;
    grid-template-areas:
        "aside"
        "main"
        "feed";
    gap: var(--space-6);
}

.split__main {
    grid-area: main;
}

.split__aside {
    grid-area: aside;
}

.split__feed {
    grid-area: feed;
}

@media (min-width: 1024px) {
    .split {
        grid-template-areas:
            "main aside"
            "main feed";
        grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
        grid-template-rows: auto 1fr;
        align-items: start;
    }
}

.card-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-3);
}

@media (min-width: 768px) {
    .card-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 1280px) {
    .card-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.auth {
    display: flex;
    flex: 1;
    flex-direction: column;
    justify-content: center;
    gap: var(--space-8);
    padding-block: var(--space-10);
}

.auth__header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    text-align: center;
}

.auth__divider {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-text-subtle);
    font-size: var(--text-sm);
}

.auth__divider::before,
.auth__divider::after {
    content: "";
    flex: 1;
    border-top: 1px solid var(--color-border);
}

.auth__footer {
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

.auth__legal {
    text-align: center;
    color: var(--color-text-subtle);
    font-size: var(--text-xs);
}

.auth__legal a {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.legal {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
    max-width: 680px;
    margin-inline: auto;
    padding-block: var(--space-8);
    line-height: 1.6;
}

.legal__brand {
    align-self: center;
}

.legal section {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.legal ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding-left: var(--space-5);
}

.legal a:not(.brand) {
    color: var(--color-text);
    text-decoration: underline;
    text-decoration-color: var(--color-accent);
    text-underline-offset: 3px;
}

.auth__footer a {
    color: var(--color-text);
    font-weight: 700;
    text-decoration: underline;
    text-decoration-color: var(--color-accent);
    text-underline-offset: 3px;
}