/* Layout */
.app-container {
    display: flex;
    height: 100vh;
    height: 100dvh;
    padding: 1.5rem;
    gap: 1.5rem;
    overflow: hidden;
}

.app-loading { opacity: 0; pointer-events: none; }

.w-full { width: 100% !important; }

/* Sidebar */
.sidebar {
    width: 260px;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    position: relative;
}

.sidebar-header .logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.sidebar-footer {
    margin-top: auto;
}

.user-profile-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    overflow: hidden;
    margin-bottom: 8px;
    width: 100%;
}

.user-profile-info i { color: var(--accent); }
.user-profile-info span {
    font-size: 0.875rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-dim);
}

.sidebar-version {
    position: absolute;
    bottom: 6px;
    left: 1.5rem;
    font-size: 0.65rem;
    opacity: 0.4;
}

.sidebar-version span {
    cursor: pointer;
    color: var(--text-dimmer);
    font-weight: 500;
    transition: var(--transition);
}

.sidebar-version span:hover {
    color: var(--primary);
    opacity: 1;
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    flex: 1;
}

.nav-links li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0.6rem 0.8rem;
    color: var(--text-dim);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition);
    font-weight: 500;
}

.nav-links li a:hover, .nav-links li.active a {
    background: rgba(255,255,255,0.05);
    color: var(--text-main);
}
.nav-links li.active a {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
    border-left: 3px solid var(--primary);
}

/* Main Content Area */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding-right: 10px;
    scrollbar-width: thin;
    scrollbar-color: var(--border-glass) transparent;
}

.main-content::-webkit-scrollbar { width: 6px; }
.main-content::-webkit-scrollbar-thumb { background: var(--border-glass); border-radius: 10px; }

/* Content Panels */
.content-panel {
    padding: 1.5rem;
}

.section-header {
    margin-bottom: 2rem;
}
.section-header h1 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}
.section-header p {
    color: var(--text-dim);
}

/* View Sections Visibility */
.view-section {
    display: none;
    animation: fadeIn 0.3s ease-out;
}
.view-section.active {
    display: block;
}

.filter-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-glass);
}

.filter-bar label {
    font-size: 0.9rem;
    color: var(--text-dim);
    white-space: nowrap;
}

/* Flex Utilities */
.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.flex-column { display: flex; flex-direction: column; }
.align-start { align-items: flex-start; }
.flex-center { display: flex; align-items: center; justify-content: center; }

/* Responsive Mobile Layout */
@media (max-width: 1024px) {
    .app-container {
        flex-direction: column;
        padding: 0;
        gap: 0;
        height: 100vh;
        height: 100dvh;
        overflow: hidden;
    }

    .sidebar {
        display: none !important;
    }

    .main-content {
        flex: 1;
        padding: 16px;
        padding-top: env(safe-area-inset-top, 16px);
        padding-bottom: calc(90px + env(safe-area-inset-bottom, 0px));
        overflow-y: auto;
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
    }

    .mobile-nav {
        display: block;
    }
}

/* Auth Mobile Floating Button */
.mobile-auth-btn {
    display: none;
    position: fixed;
    top: calc(15px + env(safe-area-inset-top, 0px));
    right: 15px;
    z-index: 200;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-dim);
    background: var(--bg-surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-glass);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (max-width: 768px) {
    .mobile-auth-btn {
        display: flex !important;
    }
}

.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 75px;
    z-index: 1000;
    border-top: 1px solid var(--border-glass);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    padding: 0 10px;
    padding-bottom: env(safe-area-inset-bottom, 2px);
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    box-shadow: 0 -10px 40px rgba(0,0,0,0.3);
}

.mobile-nav-list {
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 100%;
    list-style: none;
}

.mobile-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    color: var(--text-dim);
    font-size: 0.65rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    padding: 6px 2px;
    text-align: center;
    position: relative;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

/* Visibility Helpers */
.mobile-only {
    display: none !important;
}

@media (max-width: 768px) {
    .mobile-only {
        display: flex !important;
    }
    .desktop-only {
        display: none !important;
    }
}