/* ==========================================================================
   Layout
   ========================================================================== */

.app-shell {
    display: flex;
    min-height: 100vh;
}

.app-main {
    flex: 1 1 auto;
    min-width: 0;
    padding: var(--space-6);
}

.app-navbar {
    height: var(--navbar-height);
    position: sticky;
    top: 0;
    z-index: 1030;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.app-footer {
    padding: var(--space-4) var(--space-6);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Body / shell */
.app-body {
    margin: 0;
    overflow-x: hidden;
}

.app-shell {
    display: flex;
    min-height: 100vh;
}

.app-main-wrapper {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.app-main {
    flex: 1 1 auto;
    padding: var(--space-6);
    min-width: 0;
}

/* Sidebar */
.app-sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: width 0.2s ease;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.app-sidebar-brand {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border);
}

.app-sidebar-brand-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 700;
    font-size: var(--font-size-lg);
}

.app-sidebar-logo {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-md);
}

.app-sidebar-nav {
    flex: 1 1 auto;
    padding: var(--space-4) var(--space-3);
}

.app-sidebar-group {
    margin-bottom: var(--space-4);
}

.app-sidebar-group-label {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    padding: var(--space-2) var(--space-3);
    font-weight: 600;
}

.app-sidebar-link,
.app-sidebar-form button {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-base);
    transition: var(--transition);
    width: 100%;
    background: transparent;
    border: 0;
    text-align: left;
    cursor: pointer;
}

.app-sidebar-link:hover,
.app-sidebar-form button:hover {
    background: var(--surface-secondary);
    color: var(--text-primary);
}

.app-sidebar-link.active {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
}

[data-bs-theme="dark"] .app-sidebar-link.active {
    color: #bfdbfe;
}

[data-bs-theme="dark"] .app-sidebar-logo,
[data-bs-theme="dark"] .auth-logo {
    color: #93c5fd;
}

.app-sidebar-link i,
.app-sidebar-form button i {
    width: 18px;
    height: 18px;
}

.app-sidebar-footer {
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border);
}

.app-sidebar-user {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.app-sidebar-user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--surface-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.app-sidebar-user-name {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    font-weight: 500;
}

/* Collapsed sidebar */
body.sidebar-collapsed .app-sidebar {
    width: var(--sidebar-collapsed-width);
}

body.sidebar-collapsed .app-sidebar-brand-text,
body.sidebar-collapsed .app-sidebar-group-label,
body.sidebar-collapsed .app-sidebar-link span,
body.sidebar-collapsed .app-sidebar-user-name {
    display: none;
}

body.sidebar-collapsed .app-sidebar-link {
    justify-content: center;
}

/* Mobile off-canvas */
.app-sidebar-overlay {
    display: none;
}

@media (max-width: 991.98px) {
    .app-sidebar {
        position: fixed;
        left: 0;
        top: 0;
        z-index: 1040;
        transform: translateX(-100%);
        transition: transform 0.2s ease;
    }

    body.sidebar-open .app-sidebar {
        transform: translateX(0);
    }

    body.sidebar-open .app-sidebar-overlay {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(15, 23, 42, 0.4);
        z-index: 1035;
    }
}

/* Navbar */
.app-navbar {
    height: var(--navbar-height);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1030;
}

.app-navbar-inner {
    height: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: 0 var(--space-6);
}

.app-navbar-toggle {
    background: transparent;
    border: 0;
    color: var(--text-secondary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2);
    border-radius: var(--radius-md);
}

.app-navbar-toggle:hover {
    background: var(--surface-secondary);
    color: var(--text-primary);
}

.app-navbar-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    flex: 1 1 auto;
}

.app-navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.app-navbar-icon {
    background: transparent;
    border: 0;
    color: var(--text-secondary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2);
    border-radius: var(--radius-md);
}

.app-navbar-icon:hover {
    background: var(--surface-secondary);
    color: var(--text-primary);
}

/* Breadcrumb */
.app-breadcrumb {
    margin-bottom: var(--space-4);
}

.app-breadcrumb .breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0;
    font-size: var(--font-size-sm);
}

/* Footer */
.app-footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-2);
}

/* Auth layout (no sidebar/navbar) */
.auth-body {
    margin: 0;
    min-height: 100vh;
    background: var(--background);
}

.auth-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
}

.auth-card-wrapper {
    width: 100%;
    max-width: 420px;
}

.auth-login-card {
    width: 100%;
}

.auth-logo {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-3);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-lg);
}

.auth-login .input-group {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.auth-login .input-group-text {
    background: transparent;
    border: 0;
    color: var(--text-muted);
}

.auth-login .input-group .form-control {
    border: 0;
    background: transparent;
}

.auth-login .input-group:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.15);
}

.auth-login .invalid-feedback {
    display: block;
}