/* ===== LAYOUT ПРИЛОЖЕНИЯ ===== */
.app-layout {
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Навигация приложения */
.app-nav {
    width: 250px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
}

.nav-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-blue);
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.nav-tabs {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex-grow: 1;
}

.nav-tab {
    background: transparent;
    border: none;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 1rem;
    text-align: left;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-tab:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.nav-tab.active {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent-blue);
    font-weight: 600;
}

.nav-controls {
    display: flex;
    gap: 0.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.nav-control {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    padding: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.nav-control:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

/* Основной контент */
.app-main {
    flex: 1;
    margin-left: 250px;
    padding: 2rem;
    min-height: 100vh;
    background: var(--bg-primary);
}

.content-container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}

.content-view {
    display: none;
}

.content-view.active {
    display: block;
}

/* Адаптивность */
@media (max-width: 1024px) {
    .app-nav {
        width: 220px;
    }
    .app-main {
        margin-left: 220px;
    }
}

@media (max-width: 768px) {
    .app-nav {
        position: static;
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        height: auto;
    }
    .app-main {
        margin-left: 0;
        padding: 1.5rem;
    }
    .nav-tabs {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 0.5rem;
    }
    .nav-tab {
        white-space: nowrap;
    }
    .nav-controls {
        display: none;
    }
}

@media (max-width: 480px) {
    .app-main {
        padding: 1rem;
    }
}