/* ========================================== */
/* LAYOUT: MAIN APP STRUCTURE                 */
/* ========================================== */
.app-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    grid-template-rows: 60px 1fr;
    grid-template-areas:
        "header header"
        "sidebar main";
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
}

/* ========================================== */
/* COMPONENT: HEADER                          */
/* ========================================== */
.header {
    grid-area: header;
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    padding: 0 var(--space-lg);
    gap: var(--space-lg);
    box-shadow: var(--shadow-card);
}

.header__logo h1 {
    font-size: var(--font-size-h3);
    color: var(--color-primary);
    font-weight: 600;
}

.header__period-selector {
    margin-left: auto;
}

.header__search {
    flex: 1;
    max-width: 400px;
}

.header__search input {
    width: 100%;
    padding: var(--space-sm) var(--space-base);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-body);
}

.header__search input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.search-result-item:hover {
    background-color: var(--color-background-tertiary);
}

/* FILLED: Profile/settings button styling */
.header__profile {
    width: var(--touch-target-min);
    height: var(--touch-target-min);
    border-radius: var(--radius-circle);
    background-color: var(--color-background-secondary);
    border: 1px solid var(--color-border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
}

.header__profile:hover {
    background-color: var(--color-background-tertiary);
}

/* ========================================== */
/* COMPONENT: SIDEBAR NAVIGATION              */
/* ========================================== */
.sidebar {
    grid-area: sidebar;
    background-color: var(--color-background);
    border-right: 1px solid var(--color-border);
    padding: var(--space-lg) 0;
    overflow-y: auto;
}

.sidebar__nav ul {
    list-style: none;
}

.sidebar__nav-item {
    margin-bottom: var(--space-xs);
}

.sidebar__nav-item a {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.sidebar__nav-item a:hover {
    background-color: var(--color-background-tertiary);
    color: var(--color-text-primary);
}

.sidebar__nav-item--active a {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: 600;
}

.sidebar__toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
    color: var(--color-text-secondary);
}

@media (max-width: 767px) {
    .sidebar__toggle {
        display: block;
        position: fixed;
        bottom: var(--space-lg);
        right: var(--space-lg);
        z-index: 200;
        background: var(--color-primary);
        color: white;
        border-radius: var(--radius-circle);
        width: 48px;
        height: 48px;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: var(--shadow-card-hover);
    }
}

/* ========================================== */
/* COMPONENT: MAIN CONTENT AREA               */
/* ========================================== */
.main-content {
    grid-area: main;
    padding: var(--space-xl);
    overflow-y: auto;
}

.page {
    max-width: 1400px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
}

.page-title {
    font-size: var(--font-size-h1);
    font-weight: 700;
    color: var(--color-text-primary);
}

.page-subtitle {
    font-size: var(--font-size-body);
    color: var(--color-text-secondary);
    margin-top: var(--space-xs);
}

/* ========================================== */
/* OFFLINE INDICATOR                          */
/* ========================================== */
.offline-bar {
    background: var(--color-warning);
    color: #111;
    text-align: center;
    padding: 6px var(--space-base);
    font-size: var(--font-size-body-small);
    font-weight: 500;
    grid-column: 1 / -1;
}

.offline-bar.hidden {
    display: none;
}

@media (hover: none) {
    .search-result-item:hover,
    .header__profile:hover,
    .sidebar__nav-item a:hover {
        background-color: unset;
    }
}