/**
 * Stream Forge application shell — Phase A
 *
 * Layout, navigation, and role-aware shells.
 * All rules are scoped under .sf-app-shell or .sf-portal-standalone.
 *
 * @package StreamForge
 */

/* ------------------------------------------------------------------
 * Page-level scope
 * ------------------------------------------------------------------ */

body.sf-portal-standalone {
	margin: 0;
	min-height: 100vh;
	background: var(--sf-page);
	color: var(--sf-text);
	font: var(--sf-font-body);
}

body.sf-portal-standalone .sf-app-shell {
	font: var(--sf-font-body);
}

.sf-app-shell,
.sf-app-shell *,
.sf-app-shell *::before,
.sf-app-shell *::after {
	box-sizing: border-box;
}

.sf-app-shell {
	display: flex;
	align-items: stretch;
	min-height: 100vh;
	width: 100%;
	background: var(--sf-page);
	color: var(--sf-text);
	overflow-x: hidden;
}

/* ------------------------------------------------------------------
 * Sidebar
 * ------------------------------------------------------------------ */

.sf-sidebar {
	position: fixed;
	inset: 0 auto 0 0;
	width: var(--sf-sidebar-width);
	display: flex;
	flex-direction: column;
	background: var(--sf-surface);
	border-right: 1px solid var(--sf-border);
	z-index: 100;
	transform: translateX(-100%);
	transition: transform var(--sf-transition);
}

@media (min-width: 1024px) {
	.sf-sidebar {
		position: sticky;
		transform: translateX(0);
	}
}

body.admin-bar .sf-sidebar {
	top: 32px;
}

.sf-sidebar.is-open {
	transform: translateX(0);
}

.sf-sidebar-backdrop {
	position: fixed;
	inset: 0;
	background: rgba(0, 0, 0, 0.6);
	z-index: 90;
	opacity: 0;
	pointer-events: none;
	transition: opacity var(--sf-transition);
}

.sf-sidebar.is-open + .sf-sidebar-backdrop {
	opacity: 1;
	pointer-events: auto;
}

@media (min-width: 1024px) {
	.sf-sidebar-backdrop {
		display: none;
	}
}

/* ------------------------------------------------------------------
 * Brand
 * ------------------------------------------------------------------ */

.sf-brand {
	display: flex;
	align-items: center;
	gap: var(--sf-space-3);
	padding: var(--sf-space-4) var(--sf-space-5);
	border-bottom: 1px solid var(--sf-border);
	text-decoration: none;
	color: var(--sf-text);
}

.sf-brand__mark {
	width: 36px;
	height: 36px;
	border-radius: var(--sf-radius);
	background: var(--sf-accent);
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 12px;
	font-weight: 700;
	color: var(--sf-text);
	flex: 0 0 36px;
	overflow: hidden;
}

.sf-brand__mark img {
	width: 100%;
	height: 100%;
	object-fit: contain;
}

.sf-brand__copy {
	display: flex;
	flex-direction: column;
	min-width: 0;
}

.sf-brand__title {
	font: var(--sf-font-card);
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.sf-brand__tag {
	font: var(--sf-font-caption);
	color: var(--sf-text-muted);
}

/* ------------------------------------------------------------------
 * Navigation
 * ------------------------------------------------------------------ */

.sf-nav {
	flex: 1 1 auto;
	overflow-y: auto;
	padding: var(--sf-space-4) 0;
}

.sf-nav-section {
	margin-bottom: var(--sf-space-5);
	padding: 0 var(--sf-space-3);
}

.sf-nav-section__label {
	font: var(--sf-font-label);
	color: var(--sf-text-muted);
	text-transform: uppercase;
	letter-spacing: 0.05em;
	padding: var(--sf-space-2) var(--sf-space-3);
	margin-bottom: var(--sf-space-1);
}

.sf-nav-link {
	display: flex;
	align-items: center;
	gap: var(--sf-space-3);
	padding: var(--sf-space-3);
	border-radius: var(--sf-radius);
	color: var(--sf-text-secondary);
	text-decoration: none;
	font: var(--sf-font-body);
	transition: background var(--sf-transition), color var(--sf-transition);
}

.sf-nav-link:hover,
.sf-nav-link:focus-visible {
	background: var(--sf-surface-raised);
	color: var(--sf-text);
	outline: none;
}

.sf-nav-link.is-active {
	background: var(--sf-surface-raised);
	color: var(--sf-text);
	box-shadow: inset 2px 0 0 var(--sf-accent);
}

.sf-nav-link svg,
.sf-nav-link .sf-icon {
	width: 20px;
	height: 20px;
	flex: 0 0 20px;
	color: currentColor;
}

.sf-nav-link--danger:hover {
	color: var(--sf-danger);
	background: rgba(239, 68, 68, 0.08);
}

/* ------------------------------------------------------------------
 * Sidebar footer
 * ------------------------------------------------------------------ */

.sf-sidebar-footer {
	padding: var(--sf-space-4) var(--sf-space-5);
	border-top: 1px solid var(--sf-border);
	font: var(--sf-font-caption);
	color: var(--sf-text-muted);
}

.sf-sidebar-footer a {
	color: var(--sf-text-secondary);
	text-decoration: none;
}

.sf-sidebar-footer a:hover {
	color: var(--sf-text);
}

/* ------------------------------------------------------------------
 * Top bar
 * ------------------------------------------------------------------ */

.sf-topbar {
	position: sticky;
	top: 0;
	display: flex;
	align-items: center;
	gap: var(--sf-space-4);
	height: var(--sf-topbar-height);
	padding: 0 var(--sf-space-5);
	background: var(--sf-surface);
	border-bottom: 1px solid var(--sf-border);
	z-index: 50;
}

body.admin-bar .sf-topbar {
	top: 32px;
}

.sf-topbar__menu-toggle {
	display: flex;
	flex-direction: column;
	justify-content: center;
	width: 40px;
	height: 40px;
	gap: 5px;
	padding: 8px;
	background: transparent;
	border: 0;
	color: var(--sf-text-secondary);
	cursor: pointer;
}

@media (min-width: 1024px) {
	.sf-topbar__menu-toggle {
		display: none;
	}
}

.sf-topbar__menu-toggle span {
	display: block;
	height: 2px;
	width: 100%;
	background: currentColor;
	border-radius: 1px;
}

.sf-topbar__title {
	font: var(--sf-font-section);
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.sf-topbar__spacer {
	flex: 1;
}

.sf-topbar__account {
	display: flex;
	align-items: center;
	gap: var(--sf-space-3);
	min-width: 0;
}

.sf-avatar {
	width: 32px;
	height: 32px;
	border-radius: 50%;
	background: var(--sf-surface-raised);
	border: 1px solid var(--sf-border);
	display: flex;
	align-items: center;
	justify-content: center;
	font: var(--sf-font-label);
	color: var(--sf-text);
	flex: 0 0 32px;
}

.sf-account__name {
	font: var(--sf-font-label);
	color: var(--sf-text);
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.sf-account__status {
	font: var(--sf-font-caption);
	color: var(--sf-text-muted);
}

/* ------------------------------------------------------------------
 * Main / page
 * ------------------------------------------------------------------ */

.sf-main {
	flex: 1 1 auto;
	display: flex;
	flex-direction: column;
	min-width: 0;
	min-height: 100vh;
}

.sf-page {
	flex: 1 1 auto;
	padding: var(--sf-space-5);
	max-width: var(--sf-content-max-width);
	width: 100%;
	margin: 0 auto;
}

@media (min-width: 1024px) {
	.sf-page {
		padding: var(--sf-space-6);
	}
}

/* ------------------------------------------------------------------
 * Viewer shell (simplified)
 * ------------------------------------------------------------------ */

.sf-viewer-shell,
.sf-guest-shell {
	display: flex;
	flex-direction: column;
	min-height: 100vh;
	background: var(--sf-page);
	color: var(--sf-text);
}

.sf-viewer-topbar,
.sf-guest-topbar {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--sf-space-4);
	height: var(--sf-topbar-height);
	padding: 0 var(--sf-space-5);
	background: var(--sf-surface);
	border-bottom: 1px solid var(--sf-border);
}

.sf-viewer-topbar .sf-brand,
.sf-guest-topbar .sf-brand {
	border-bottom: 0;
	padding: 0;
}

.sf-viewer-shell__content,
.sf-guest-shell__content {
	flex: 1 1 auto;
	padding: var(--sf-space-5);
}

/* ------------------------------------------------------------------
 * Mobile navigation
 * ------------------------------------------------------------------ */

.sf-mobile-nav {
	position: fixed;
	bottom: 0;
	left: 0;
	right: 0;
	display: flex;
	justify-content: space-around;
	align-items: center;
	gap: var(--sf-space-1);
	height: 56px;
	background: var(--sf-surface);
	border-top: 1px solid var(--sf-border);
	z-index: 80;
}

@media (min-width: 768px) {
	.sf-mobile-nav {
		display: none;
	}
}

.sf-mobile-nav a {
	flex: 1;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 2px;
	height: 100%;
	color: var(--sf-text-muted);
	text-decoration: none;
	font: var(--sf-font-caption);
	font-size: 10px;
}

.sf-mobile-nav a.is-active {
	color: var(--sf-text);
}

.sf-mobile-nav svg,
.sf-mobile-nav .sf-icon {
	width: 22px;
	height: 22px;
}

/* Ensure mobile nav doesn't hide content */
.sf-main,
.sf-viewer-shell__content,
.sf-guest-shell__content {
	padding-bottom: 72px;
}

@media (min-width: 768px) {
	.sf-main,
	.sf-viewer-shell__content,
	.sf-guest-shell__content {
		padding-bottom: var(--sf-space-6);
	}
}