/* ==========================================================================
   layout.css
   Sivun yleinen rakenne: header, footer, sisältöalueen leveys.
   ========================================================================== */

/* --------------------------------------------------------------------
   Yläpalkki (header) - näkyy kirjautumisen jälkeen kaikilla sivuilla.
   Ei sivupalkkia (sidebar) - navigointi tapahtuu tästä palkista.
   -------------------------------------------------------------------- */

.site-header {
    height: var(--header-height);
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 50;
}

.site-header__inner {
    height: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--space-5);
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.site-header__brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

.site-header__logo {
    height: 32px;
    width: auto;
    border-radius: var(--radius-sm);
}

.site-header__title {
    font-weight: 600;
    font-size: 16px;
    color: var(--color-text);
    white-space: nowrap;
}

.site-header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex: 1;
}

.site-header__link {
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.site-header__link:hover {
    background-color: var(--color-bg);
    color: var(--color-text);
}

.site-header__link--active {
    background-color: var(--color-accent);
    color: var(--color-primary);
}

.site-header__user {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-shrink: 0;
}

.site-header__username {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
    white-space: nowrap;
}

.site-header__logout-form {
    display: inline-flex;
}

.site-header__menu-toggle {
    display: none;
    position: relative;
    width: 32px;
    height: 32px;
    flex-shrink: 0;
}

.site-header__menu-toggle span {
    position: absolute;
    left: 4px;
    right: 4px;
    display: block;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 2px;
}

.site-header__menu-toggle span:nth-child(1) {
    top: 10px;
}

.site-header__menu-toggle span:nth-child(2) {
    top: 15px;
}

.site-header__menu-toggle span:nth-child(3) {
    top: 20px;
}

.site-header__nav--mobile {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
    padding: var(--space-3) var(--space-5) var(--space-4);
    border-top: 1px solid var(--color-border);
    background-color: var(--color-surface);
}

.site-header__nav--mobile.is-open {
    display: flex;
}

.site-header__nav--mobile .site-header__link {
    width: 100%;
}

.site-header__nav--mobile .site-header__logout-form {
    width: 100%;
    margin-top: var(--space-2);
}

.site-header__nav--mobile .btn {
    width: 100%;
}

/* --------------------------------------------------------------------
   Sisältöalue
   -------------------------------------------------------------------- */

.page-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--space-6) var(--space-5) var(--space-8);
}

.page-header {
    margin-bottom: var(--space-6);
}

.page-header__title {
    font-size: 26px;
    margin-bottom: var(--space-2);
}

.page-header__subtitle {
    font-size: 15px;
    color: var(--color-text-muted);
}

.card-section {
    margin-bottom: var(--space-7);
}

.card-section__title {
    font-size: 18px;
    margin-bottom: var(--space-1);
}

.card-section__description {
    font-size: 14px;
    color: var(--color-text-muted);
    margin-bottom: var(--space-5);
}

.card-section--split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5);
}

/* --------------------------------------------------------------------
   Alatunniste (footer)
   -------------------------------------------------------------------- */

.site-footer {
    border-top: 1px solid var(--color-border);
    padding: var(--space-5);
}

.site-footer__inner {
    max-width: var(--container-width);
    margin: 0 auto;
    font-size: 13px;
    color: var(--color-text-muted);
    text-align: center;
}