/* Layout */
.page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.page-header {
    background: var(--color-brand);
    color: var(--color-brand-contrast);
    padding: var(--space-3) var(--space-4);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.page-header__logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: 700;
    font-size: var(--font-size-lg);
    text-decoration: none;
    color: var(--color-brand-contrast);
}

.page-header__logo img,
.page-header__logo svg {
    height: 2rem;
    width: auto;
}

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

.page-header__nav a {
    color: var(--color-brand-contrast);
    text-decoration: none;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    transition: background var(--transition-fast);
    white-space: nowrap;
}

.page-header__nav a:hover,
.page-header__nav a.active {
    background: rgba(255,255,255,0.15);
}

.page-header__user {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-sm);
}

.page-header__user-name {
    opacity: 0.9;
}

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-brand-contrast);
    cursor: pointer;
    padding: var(--space-2);
    font-size: 1.5rem;
    line-height: 1;
}

.container {
    width: 100%;
    max-width: var(--content-width);
    margin: 0 auto;
    padding: var(--space-4);
}

.page-content {
    flex: 1;
    padding: var(--space-6) var(--space-4);
}

.page-content > .container {
    padding: 0;
}

/* Stack (vertical spacing) */
.stack {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.stack-sm { gap: var(--space-2); }
.stack-lg { gap: var(--space-6); }

/* Cluster (horizontal spacing) */
.cluster {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-3);
}

.cluster-between {
    justify-content: space-between;
}

/* Grid */
.grid {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 20rem), 1fr));
}

.grid-2 {
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 28rem), 1fr));
}

/* Two-column form layout */
.two-column {
    display: grid;
    gap: var(--space-6);
    grid-template-columns: 1fr;
}

/* Page title bar */
.page-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.page-title h1 {
    font-size: var(--font-size-2xl);
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-muted);
    margin-bottom: var(--space-4);
}

.breadcrumb a {
    color: var(--color-muted);
}

.breadcrumb a:hover {
    color: var(--color-brand);
}

.breadcrumb__separator::before {
    content: "/";
    margin: 0 var(--space-1);
}

/* Section */
.section {
    margin-bottom: var(--space-8);
}

.section__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--color-border);
}

/* Footer */
.page-footer {
    text-align: center;
    padding: var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--color-muted);
    border-top: 1px solid var(--color-border);
}