/* ==========================================================================
   Layout Styles - Sidebar & Main Content
   ========================================================================== */

/* ===== APP SHELL ===== */
.app {
    display: flex;
    min-height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    z-index: var(--z-fixed);
    transition: width var(--transition-base);
}

.sidebar--collapsed {
    width: var(--sidebar-collapsed);
}

/* Logo Area */
.sidebar__header {
    padding: var(--space-5);
    border-bottom: 1px solid var(--glass-border);
}

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

.sidebar__logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    flex-shrink: 0;
}

.sidebar__logo-text {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    white-space: nowrap;
}

.sidebar__logo-text span {
    color: var(--accent-primary);
}

/* Search */
.sidebar__search {
    padding: var(--space-4) var(--space-5);
}

.search-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    padding-left: var(--space-10);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-primary-glow);
}

.search-wrapper {
    position: relative;
}

.search-wrapper__icon {
    position: absolute;
    left: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    width: 18px;
    height: 18px;
}

/* Navigation */
.sidebar__nav {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-3) 0;
}

.nav-section {
    margin-bottom: var(--space-4);
}

.nav-section__title {
    padding: var(--space-2) var(--space-5);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-5);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
    margin: var(--space-1) 0;
}

.nav-item:hover {
    background: var(--glass-bg);
    color: var(--text-primary);
}

.nav-item--active {
    background: var(--glass-bg);
    color: var(--accent-primary);
    border-left-color: var(--accent-primary);
}

.nav-item__icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
    flex-shrink: 0;
}

.nav-item__badge {
    margin-left: auto;
    padding: var(--space-1) var(--space-2);
    font-size: 10px;
    font-weight: var(--font-bold);
    background: var(--accent-primary);
    color: white;
    border-radius: var(--radius-full);
}

/* Sidebar Footer */
.sidebar__footer {
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--glass-border);
}

.sidebar__footer-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.sidebar__footer-link:hover {
    color: var(--accent-secondary);
}

/* ===== MAIN CONTENT ===== */
.main {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    background: var(--bg-primary);
}

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
}

.header__breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.header__breadcrumb-separator {
    color: var(--text-muted);
}

.header__breadcrumb-current {
    color: var(--text-primary);
    font-weight: var(--font-medium);
}

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

/* Content Area */
.content {
    padding: var(--space-6);
    max-width: var(--content-max-width);
    margin: 0 auto;
}

/* Page Header */
.page-header {
    margin-bottom: var(--space-8);
}

.page-header__title {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-2);
}

.page-header__icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    font-size: var(--text-2xl);
}

.page-header__description {
    color: var(--text-secondary);
    font-size: var(--text-lg);
    max-width: 600px;
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-5);
}

/* Section */
.section {
    margin-bottom: var(--space-10);
}

.section__title {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--glass-border);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    /* Width handled by JS/Class now to allow toggle */

    /* Text visibility handled by .sidebar--collapsed class now */

    .nav-item {
        justify-content: center;
        padding: var(--space-4);
    }

    .nav-item__icon {
        font-size: var(--text-xl);
    }

    .main {
        margin-left: var(--sidebar-collapsed);
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
    }

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

    .sidebar__logo-text,
    .sidebar__search,
    .nav-section__title,
    .nav-item span:not(.nav-item__icon) {
        display: block;
    }

    .nav-item {
        justify-content: flex-start;
        padding: var(--space-3) var(--space-5);
    }

    .main {
        margin-left: 0;
    }

    .content {
        padding: var(--space-4);
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== OVERLAY (mobile) ===== */
.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: calc(var(--z-fixed) - 1);
}

.overlay.visible {
    opacity: 1;
    visibility: visible;
}

/* ===== UTILITIES / STATE MODIFIERS ===== */

/* Desktop only: Hide mobile menu toggle */
@media (min-width: 1025px) {
    #menu-toggle {
        display: none;
    }
}

/* Sidebar Collapsed State (Desktop Toggle) */
.sidebar--collapsed .sidebar__logo-text,
.sidebar--collapsed .sidebar__search,
.sidebar--collapsed .nav-section__title,
.sidebar--collapsed .nav-item span:not(.nav-item__icon),
.sidebar--collapsed .sidebar__footer-link span,
.sidebar--collapsed .nav-item__badge {
    display: none;
}

.sidebar--collapsed .nav-item {
    justify-content: center;
    padding-left: 0;
    padding-right: 0;
}

.sidebar--collapsed .sidebar__logo {
    justify-content: center;
}

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

/* Adjust Main Content when Sidebar is Collapsed */
.sidebar--collapsed~.main {
    margin-left: var(--sidebar-collapsed);
}